diff options
Diffstat (limited to 'qemu/linux-user/syscall.c')
| -rw-r--r-- | qemu/linux-user/syscall.c | 9890 |
1 files changed, 9890 insertions, 0 deletions
diff --git a/qemu/linux-user/syscall.c b/qemu/linux-user/syscall.c new file mode 100644 index 000000000..f62c69894 --- /dev/null +++ b/qemu/linux-user/syscall.c @@ -0,0 +1,9890 @@ +/* + * Linux syscalls + * + * Copyright (c) 2003 Fabrice Bellard + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ +#define _ATFILE_SOURCE +#include <stdlib.h> +#include <stdio.h> +#include <stdarg.h> +#include <string.h> +#include <elf.h> +#include <endian.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <time.h> +#include <limits.h> +#include <grp.h> +#include <sys/types.h> +#include <sys/ipc.h> +#include <sys/msg.h> +#include <sys/wait.h> +#include <sys/time.h> +#include <sys/stat.h> +#include <sys/mount.h> +#include <sys/file.h> +#include <sys/fsuid.h> +#include <sys/personality.h> +#include <sys/prctl.h> +#include <sys/resource.h> +#include <sys/mman.h> +#include <sys/swap.h> +#include <linux/capability.h> +#include <signal.h> +#include <sched.h> +#ifdef __ia64__ +int __clone2(int (*fn)(void *), void *child_stack_base, + size_t stack_size, int flags, void *arg, ...); +#endif +#include <sys/socket.h> +#include <sys/un.h> +#include <sys/uio.h> +#include <sys/poll.h> +#include <sys/times.h> +#include <sys/shm.h> +#include <sys/sem.h> +#include <sys/statfs.h> +#include <utime.h> +#include <sys/sysinfo.h> +//#include <sys/user.h> +#include <netinet/ip.h> +#include <netinet/tcp.h> +#include <linux/wireless.h> +#include <linux/icmp.h> +#include "qemu-common.h" +#ifdef CONFIG_TIMERFD +#include <sys/timerfd.h> +#endif +#ifdef TARGET_GPROF +#include <sys/gmon.h> +#endif +#ifdef CONFIG_EVENTFD +#include <sys/eventfd.h> +#endif +#ifdef CONFIG_EPOLL +#include <sys/epoll.h> +#endif +#ifdef CONFIG_ATTR +#include "qemu/xattr.h" +#endif +#ifdef CONFIG_SENDFILE +#include <sys/sendfile.h> +#endif + +#define termios host_termios +#define winsize host_winsize +#define termio host_termio +#define sgttyb host_sgttyb /* same as target */ +#define tchars host_tchars /* same as target */ +#define ltchars host_ltchars /* same as target */ + +#include <linux/termios.h> +#include <linux/unistd.h> +#include <linux/cdrom.h> +#include <linux/hdreg.h> +#include <linux/soundcard.h> +#include <linux/kd.h> +#include <linux/mtio.h> +#include <linux/fs.h> +#if defined(CONFIG_FIEMAP) +#include <linux/fiemap.h> +#endif +#include <linux/fb.h> +#include <linux/vt.h> +#include <linux/dm-ioctl.h> +#include <linux/reboot.h> +#include <linux/route.h> +#include <linux/filter.h> +#include <linux/blkpg.h> +#include "linux_loop.h" +#include "uname.h" + +#include "qemu.h" + +#define CLONE_NPTL_FLAGS2 (CLONE_SETTLS | \ + CLONE_PARENT_SETTID | CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID) + +//#define DEBUG + +//#include <linux/msdos_fs.h> +#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct linux_dirent [2]) +#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct linux_dirent [2]) + + +#undef _syscall0 +#undef _syscall1 +#undef _syscall2 +#undef _syscall3 +#undef _syscall4 +#undef _syscall5 +#undef _syscall6 + +#define _syscall0(type,name) \ +static type name (void) \ +{ \ + return syscall(__NR_##name); \ +} + +#define _syscall1(type,name,type1,arg1) \ +static type name (type1 arg1) \ +{ \ + return syscall(__NR_##name, arg1); \ +} + +#define _syscall2(type,name,type1,arg1,type2,arg2) \ +static type name (type1 arg1,type2 arg2) \ +{ \ + return syscall(__NR_##name, arg1, arg2); \ +} + +#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \ +static type name (type1 arg1,type2 arg2,type3 arg3) \ +{ \ + return syscall(__NR_##name, arg1, arg2, arg3); \ +} + +#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ +static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ +{ \ + return syscall(__NR_##name, arg1, arg2, arg3, arg4); \ +} + +#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ + type5,arg5) \ +static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ +{ \ + return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5); \ +} + + +#define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \ + type5,arg5,type6,arg6) \ +static type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5, \ + type6 arg6) \ +{ \ + return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6); \ +} + + +#define __NR_sys_uname __NR_uname +#define __NR_sys_getcwd1 __NR_getcwd +#define __NR_sys_getdents __NR_getdents +#define __NR_sys_getdents64 __NR_getdents64 +#define __NR_sys_getpriority __NR_getpriority +#define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo +#define __NR_sys_syslog __NR_syslog +#define __NR_sys_tgkill __NR_tgkill +#define __NR_sys_tkill __NR_tkill +#define __NR_sys_futex __NR_futex +#define __NR_sys_inotify_init __NR_inotify_init +#define __NR_sys_inotify_add_watch __NR_inotify_add_watch +#define __NR_sys_inotify_rm_watch __NR_inotify_rm_watch + +#if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__) || \ + defined(__s390x__) +#define __NR__llseek __NR_lseek +#endif + +/* Newer kernel ports have llseek() instead of _llseek() */ +#if defined(TARGET_NR_llseek) && !defined(TARGET_NR__llseek) +#define TARGET_NR__llseek TARGET_NR_llseek +#endif + +#ifdef __NR_gettid +_syscall0(int, gettid) +#else +/* This is a replacement for the host gettid() and must return a host + errno. */ +static int gettid(void) { + return -ENOSYS; +} +#endif +#ifdef __NR_getdents +_syscall3(int, sys_getdents, uint, fd, struct linux_dirent *, dirp, uint, count); +#endif +#if !defined(__NR_getdents) || \ + (defined(TARGET_NR_getdents64) && defined(__NR_getdents64)) +_syscall3(int, sys_getdents64, uint, fd, struct linux_dirent64 *, dirp, uint, count); +#endif +#if defined(TARGET_NR__llseek) && defined(__NR_llseek) +_syscall5(int, _llseek, uint, fd, ulong, hi, ulong, lo, + loff_t *, res, uint, wh); +#endif +_syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo) +_syscall3(int,sys_syslog,int,type,char*,bufp,int,len) +#if defined(TARGET_NR_tgkill) && defined(__NR_tgkill) +_syscall3(int,sys_tgkill,int,tgid,int,pid,int,sig) +#endif +#if defined(TARGET_NR_tkill) && defined(__NR_tkill) +_syscall2(int,sys_tkill,int,tid,int,sig) +#endif +#ifdef __NR_exit_group +_syscall1(int,exit_group,int,error_code) +#endif +#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) +_syscall1(int,set_tid_address,int *,tidptr) +#endif +#if defined(TARGET_NR_futex) && defined(__NR_futex) +_syscall6(int,sys_futex,int *,uaddr,int,op,int,val, + const struct timespec *,timeout,int *,uaddr2,int,val3) +#endif +#define __NR_sys_sched_getaffinity __NR_sched_getaffinity +_syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len, + unsigned long *, user_mask_ptr); +#define __NR_sys_sched_setaffinity __NR_sched_setaffinity +_syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len, + unsigned long *, user_mask_ptr); +_syscall4(int, reboot, int, magic1, int, magic2, unsigned int, cmd, + void *, arg); +_syscall2(int, capget, struct __user_cap_header_struct *, header, + struct __user_cap_data_struct *, data); +_syscall2(int, capset, struct __user_cap_header_struct *, header, + struct __user_cap_data_struct *, data); +#if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) +_syscall2(int, ioprio_get, int, which, int, who) +#endif +#if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) +_syscall3(int, ioprio_set, int, which, int, who, int, ioprio) +#endif + +static bitmask_transtbl fcntl_flags_tbl[] = { + { TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, }, + { TARGET_O_ACCMODE, TARGET_O_RDWR, O_ACCMODE, O_RDWR, }, + { TARGET_O_CREAT, TARGET_O_CREAT, O_CREAT, O_CREAT, }, + { TARGET_O_EXCL, TARGET_O_EXCL, O_EXCL, O_EXCL, }, + { TARGET_O_NOCTTY, TARGET_O_NOCTTY, O_NOCTTY, O_NOCTTY, }, + { TARGET_O_TRUNC, TARGET_O_TRUNC, O_TRUNC, O_TRUNC, }, + { TARGET_O_APPEND, TARGET_O_APPEND, O_APPEND, O_APPEND, }, + { TARGET_O_NONBLOCK, TARGET_O_NONBLOCK, O_NONBLOCK, O_NONBLOCK, }, + { TARGET_O_SYNC, TARGET_O_DSYNC, O_SYNC, O_DSYNC, }, + { TARGET_O_SYNC, TARGET_O_SYNC, O_SYNC, O_SYNC, }, + { TARGET_FASYNC, TARGET_FASYNC, FASYNC, FASYNC, }, + { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, }, + { TARGET_O_NOFOLLOW, TARGET_O_NOFOLLOW, O_NOFOLLOW, O_NOFOLLOW, }, +#if defined(O_DIRECT) + { TARGET_O_DIRECT, TARGET_O_DIRECT, O_DIRECT, O_DIRECT, }, +#endif +#if defined(O_NOATIME) + { TARGET_O_NOATIME, TARGET_O_NOATIME, O_NOATIME, O_NOATIME }, +#endif +#if defined(O_CLOEXEC) + { TARGET_O_CLOEXEC, TARGET_O_CLOEXEC, O_CLOEXEC, O_CLOEXEC }, +#endif +#if defined(O_PATH) + { TARGET_O_PATH, TARGET_O_PATH, O_PATH, O_PATH }, +#endif + /* Don't terminate the list prematurely on 64-bit host+guest. */ +#if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0 + { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, }, +#endif + { 0, 0, 0, 0 } +}; + +static int sys_getcwd1(char *buf, size_t size) +{ + if (getcwd(buf, size) == NULL) { + /* getcwd() sets errno */ + return (-1); + } + return strlen(buf)+1; +} + +static int sys_openat(int dirfd, const char *pathname, int flags, mode_t mode) +{ + /* + * open(2) has extra parameter 'mode' when called with + * flag O_CREAT. + */ + if ((flags & O_CREAT) != 0) { + return (openat(dirfd, pathname, flags, mode)); + } + return (openat(dirfd, pathname, flags)); +} + +#ifdef TARGET_NR_utimensat +#ifdef CONFIG_UTIMENSAT +static int sys_utimensat(int dirfd, const char *pathname, + const struct timespec times[2], int flags) +{ + if (pathname == NULL) + return futimens(dirfd, times); + else + return utimensat(dirfd, pathname, times, flags); +} +#elif defined(__NR_utimensat) +#define __NR_sys_utimensat __NR_utimensat +_syscall4(int,sys_utimensat,int,dirfd,const char *,pathname, + const struct timespec *,tsp,int,flags) +#else +static int sys_utimensat(int dirfd, const char *pathname, + const struct timespec times[2], int flags) +{ + errno = ENOSYS; + return -1; +} +#endif +#endif /* TARGET_NR_utimensat */ + +#ifdef CONFIG_INOTIFY +#include <sys/inotify.h> + +#if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) +static int sys_inotify_init(void) +{ + return (inotify_init()); +} +#endif +#if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) +static int sys_inotify_add_watch(int fd,const char *pathname, int32_t mask) +{ + return (inotify_add_watch(fd, pathname, mask)); +} +#endif +#if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) +static int sys_inotify_rm_watch(int fd, int32_t wd) +{ + return (inotify_rm_watch(fd, wd)); +} +#endif +#ifdef CONFIG_INOTIFY1 +#if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) +static int sys_inotify_init1(int flags) +{ + return (inotify_init1(flags)); +} +#endif +#endif +#else +/* Userspace can usually survive runtime without inotify */ +#undef TARGET_NR_inotify_init +#undef TARGET_NR_inotify_init1 +#undef TARGET_NR_inotify_add_watch +#undef TARGET_NR_inotify_rm_watch +#endif /* CONFIG_INOTIFY */ + +#if defined(TARGET_NR_ppoll) +#ifndef __NR_ppoll +# define __NR_ppoll -1 +#endif +#define __NR_sys_ppoll __NR_ppoll +_syscall5(int, sys_ppoll, struct pollfd *, fds, nfds_t, nfds, + struct timespec *, timeout, const sigset_t *, sigmask, + size_t, sigsetsize) +#endif + +#if defined(TARGET_NR_pselect6) +#ifndef __NR_pselect6 +# define __NR_pselect6 -1 +#endif +#define __NR_sys_pselect6 __NR_pselect6 +_syscall6(int, sys_pselect6, int, nfds, fd_set *, readfds, fd_set *, writefds, + fd_set *, exceptfds, struct timespec *, timeout, void *, sig); +#endif + +#if defined(TARGET_NR_prlimit64) +#ifndef __NR_prlimit64 +# define __NR_prlimit64 -1 +#endif +#define __NR_sys_prlimit64 __NR_prlimit64 +/* The glibc rlimit structure may not be that used by the underlying syscall */ +struct host_rlimit64 { + uint64_t rlim_cur; + uint64_t rlim_max; +}; +_syscall4(int, sys_prlimit64, pid_t, pid, int, resource, + const struct host_rlimit64 *, new_limit, + struct host_rlimit64 *, old_limit) +#endif + + +#if defined(TARGET_NR_timer_create) +/* Maxiumum of 32 active POSIX timers allowed at any one time. */ +static timer_t g_posix_timers[32] = { 0, } ; + +static inline int next_free_host_timer(void) +{ + int k ; + /* FIXME: Does finding the next free slot require a lock? */ + for (k = 0; k < ARRAY_SIZE(g_posix_timers); k++) { + if (g_posix_timers[k] == 0) { + g_posix_timers[k] = (timer_t) 1; + return k; + } + } + return -1; +} +#endif + +/* ARM EABI and MIPS expect 64bit types aligned even on pairs or registers */ +#ifdef TARGET_ARM +static inline int regpairs_aligned(void *cpu_env) { + return ((((CPUARMState *)cpu_env)->eabi) == 1) ; +} +#elif defined(TARGET_MIPS) +static inline int regpairs_aligned(void *cpu_env) { return 1; } +#elif defined(TARGET_PPC) && !defined(TARGET_PPC64) +/* SysV AVI for PPC32 expects 64bit parameters to be passed on odd/even pairs + * of registers which translates to the same as ARM/MIPS, because we start with + * r3 as arg1 */ +static inline int regpairs_aligned(void *cpu_env) { return 1; } +#else +static inline int regpairs_aligned(void *cpu_env) { return 0; } +#endif + +#define ERRNO_TABLE_SIZE 1200 + +/* target_to_host_errno_table[] is initialized from + * host_to_target_errno_table[] in syscall_init(). */ +static uint16_t target_to_host_errno_table[ERRNO_TABLE_SIZE] = { +}; + +/* + * This list is the union of errno values overridden in asm-<arch>/errno.h + * minus the errnos that are not actually generic to all archs. + */ +static uint16_t host_to_target_errno_table[ERRNO_TABLE_SIZE] = { + [EIDRM] = TARGET_EIDRM, + [ECHRNG] = TARGET_ECHRNG, + [EL2NSYNC] = TARGET_EL2NSYNC, + [EL3HLT] = TARGET_EL3HLT, + [EL3RST] = TARGET_EL3RST, + [ELNRNG] = TARGET_ELNRNG, + [EUNATCH] = TARGET_EUNATCH, + [ENOCSI] = TARGET_ENOCSI, + [EL2HLT] = TARGET_EL2HLT, + [EDEADLK] = TARGET_EDEADLK, + [ENOLCK] = TARGET_ENOLCK, + [EBADE] = TARGET_EBADE, + [EBADR] = TARGET_EBADR, + [EXFULL] = TARGET_EXFULL, + [ENOANO] = TARGET_ENOANO, + [EBADRQC] = TARGET_EBADRQC, + [EBADSLT] = TARGET_EBADSLT, + [EBFONT] = TARGET_EBFONT, + [ENOSTR] = TARGET_ENOSTR, + [ENODATA] = TARGET_ENODATA, + [ETIME] = TARGET_ETIME, + [ENOSR] = TARGET_ENOSR, + [ENONET] = TARGET_ENONET, + [ENOPKG] = TARGET_ENOPKG, + [EREMOTE] = TARGET_EREMOTE, + [ENOLINK] = TARGET_ENOLINK, + [EADV] = TARGET_EADV, + [ESRMNT] = TARGET_ESRMNT, + [ECOMM] = TARGET_ECOMM, + [EPROTO] = TARGET_EPROTO, + [EDOTDOT] = TARGET_EDOTDOT, + [EMULTIHOP] = TARGET_EMULTIHOP, + [EBADMSG] = TARGET_EBADMSG, + [ENAMETOOLONG] = TARGET_ENAMETOOLONG, + [EOVERFLOW] = TARGET_EOVERFLOW, + [ENOTUNIQ] = TARGET_ENOTUNIQ, + [EBADFD] = TARGET_EBADFD, + [EREMCHG] = TARGET_EREMCHG, + [ELIBACC] = TARGET_ELIBACC, + [ELIBBAD] = TARGET_ELIBBAD, + [ELIBSCN] = TARGET_ELIBSCN, + [ELIBMAX] = TARGET_ELIBMAX, + [ELIBEXEC] = TARGET_ELIBEXEC, + [EILSEQ] = TARGET_EILSEQ, + [ENOSYS] = TARGET_ENOSYS, + [ELOOP] = TARGET_ELOOP, + [ERESTART] = TARGET_ERESTART, + [ESTRPIPE] = TARGET_ESTRPIPE, + [ENOTEMPTY] = TARGET_ENOTEMPTY, + [EUSERS] = TARGET_EUSERS, + [ENOTSOCK] = TARGET_ENOTSOCK, + [EDESTADDRREQ] = TARGET_EDESTADDRREQ, + [EMSGSIZE] = TARGET_EMSGSIZE, + [EPROTOTYPE] = TARGET_EPROTOTYPE, + [ENOPROTOOPT] = TARGET_ENOPROTOOPT, + [EPROTONOSUPPORT] = TARGET_EPROTONOSUPPORT, + [ESOCKTNOSUPPORT] = TARGET_ESOCKTNOSUPPORT, + [EOPNOTSUPP] = TARGET_EOPNOTSUPP, + [EPFNOSUPPORT] = TARGET_EPFNOSUPPORT, + [EAFNOSUPPORT] = TARGET_EAFNOSUPPORT, + [EADDRINUSE] = TARGET_EADDRINUSE, + [EADDRNOTAVAIL] = TARGET_EADDRNOTAVAIL, + [ENETDOWN] = TARGET_ENETDOWN, + [ENETUNREACH] = TARGET_ENETUNREACH, + [ENETRESET] = TARGET_ENETRESET, + [ECONNABORTED] = TARGET_ECONNABORTED, + [ECONNRESET] = TARGET_ECONNRESET, + [ENOBUFS] = TARGET_ENOBUFS, + [EISCONN] = TARGET_EISCONN, + [ENOTCONN] = TARGET_ENOTCONN, + [EUCLEAN] = TARGET_EUCLEAN, + [ENOTNAM] = TARGET_ENOTNAM, + [ENAVAIL] = TARGET_ENAVAIL, + [EISNAM] = TARGET_EISNAM, + [EREMOTEIO] = TARGET_EREMOTEIO, + [ESHUTDOWN] = TARGET_ESHUTDOWN, + [ETOOMANYREFS] = TARGET_ETOOMANYREFS, + [ETIMEDOUT] = TARGET_ETIMEDOUT, + [ECONNREFUSED] = TARGET_ECONNREFUSED, + [EHOSTDOWN] = TARGET_EHOSTDOWN, + [EHOSTUNREACH] = TARGET_EHOSTUNREACH, + [EALREADY] = TARGET_EALREADY, + [EINPROGRESS] = TARGET_EINPROGRESS, + [ESTALE] = TARGET_ESTALE, + [ECANCELED] = TARGET_ECANCELED, + [ENOMEDIUM] = TARGET_ENOMEDIUM, + [EMEDIUMTYPE] = TARGET_EMEDIUMTYPE, +#ifdef ENOKEY + [ENOKEY] = TARGET_ENOKEY, +#endif +#ifdef EKEYEXPIRED + [EKEYEXPIRED] = TARGET_EKEYEXPIRED, +#endif +#ifdef EKEYREVOKED + [EKEYREVOKED] = TARGET_EKEYREVOKED, +#endif +#ifdef EKEYREJECTED + [EKEYREJECTED] = TARGET_EKEYREJECTED, +#endif +#ifdef EOWNERDEAD + [EOWNERDEAD] = TARGET_EOWNERDEAD, +#endif +#ifdef ENOTRECOVERABLE + [ENOTRECOVERABLE] = TARGET_ENOTRECOVERABLE, +#endif +}; + +static inline int host_to_target_errno(int err) +{ + if(host_to_target_errno_table[err]) + return host_to_target_errno_table[err]; + return err; +} + +static inline int target_to_host_errno(int err) +{ + if (target_to_host_errno_table[err]) + return target_to_host_errno_table[err]; + return err; +} + +static inline abi_long get_errno(abi_long ret) +{ + if (ret == -1) + return -host_to_target_errno(errno); + else + return ret; +} + +static inline int is_error(abi_long ret) +{ + return (abi_ulong)ret >= (abi_ulong)(-4096); +} + +char *target_strerror(int err) +{ + if ((err >= ERRNO_TABLE_SIZE) || (err < 0)) { + return NULL; + } + return strerror(target_to_host_errno(err)); +} + +static inline int host_to_target_sock_type(int host_type) +{ + int target_type; + + switch (host_type & 0xf /* SOCK_TYPE_MASK */) { + case SOCK_DGRAM: + target_type = TARGET_SOCK_DGRAM; + break; + case SOCK_STREAM: + target_type = TARGET_SOCK_STREAM; + break; + default: + target_type = host_type & 0xf /* SOCK_TYPE_MASK */; + break; + } + +#if defined(SOCK_CLOEXEC) + if (host_type & SOCK_CLOEXEC) { + target_type |= TARGET_SOCK_CLOEXEC; + } +#endif + +#if defined(SOCK_NONBLOCK) + if (host_type & SOCK_NONBLOCK) { + target_type |= TARGET_SOCK_NONBLOCK; + } +#endif + + return target_type; +} + +static abi_ulong target_brk; +static abi_ulong target_original_brk; +static abi_ulong brk_page; + +void target_set_brk(abi_ulong new_brk) +{ + target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk); + brk_page = HOST_PAGE_ALIGN(target_brk); +} + +//#define DEBUGF_BRK(message, args...) do { fprintf(stderr, (message), ## args); } while (0) +#define DEBUGF_BRK(message, args...) + +/* do_brk() must return target values and target errnos. */ +abi_long do_brk(abi_ulong new_brk) +{ + abi_long mapped_addr; + int new_alloc_size; + + DEBUGF_BRK("do_brk(" TARGET_ABI_FMT_lx ") -> ", new_brk); + + if (!new_brk) { + DEBUGF_BRK(TARGET_ABI_FMT_lx " (!new_brk)\n", target_brk); + return target_brk; + } + if (new_brk < target_original_brk) { + DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk < target_original_brk)\n", + target_brk); + return target_brk; + } + + /* If the new brk is less than the highest page reserved to the + * target heap allocation, set it and we're almost done... */ + if (new_brk <= brk_page) { + /* Heap contents are initialized to zero, as for anonymous + * mapped pages. */ + if (new_brk > target_brk) { + memset(g2h(target_brk), 0, new_brk - target_brk); + } + target_brk = new_brk; + DEBUGF_BRK(TARGET_ABI_FMT_lx " (new_brk <= brk_page)\n", target_brk); + return target_brk; + } + + /* We need to allocate more memory after the brk... Note that + * we don't use MAP_FIXED because that will map over the top of + * any existing mapping (like the one with the host libc or qemu + * itself); instead we treat "mapped but at wrong address" as + * a failure and unmap again. + */ + new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page); + mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size, + PROT_READ|PROT_WRITE, + MAP_ANON|MAP_PRIVATE, 0, 0)); + + if (mapped_addr == brk_page) { + /* Heap contents are initialized to zero, as for anonymous + * mapped pages. Technically the new pages are already + * initialized to zero since they *are* anonymous mapped + * pages, however we have to take care with the contents that + * come from the remaining part of the previous page: it may + * contains garbage data due to a previous heap usage (grown + * then shrunken). */ + memset(g2h(target_brk), 0, brk_page - target_brk); + + target_brk = new_brk; + brk_page = HOST_PAGE_ALIGN(target_brk); + DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr == brk_page)\n", + target_brk); + return target_brk; + } else if (mapped_addr != -1) { + /* Mapped but at wrong address, meaning there wasn't actually + * enough space for this brk. + */ + target_munmap(mapped_addr, new_alloc_size); + mapped_addr = -1; + DEBUGF_BRK(TARGET_ABI_FMT_lx " (mapped_addr != -1)\n", target_brk); + } + else { + DEBUGF_BRK(TARGET_ABI_FMT_lx " (otherwise)\n", target_brk); + } + +#if defined(TARGET_ALPHA) + /* We (partially) emulate OSF/1 on Alpha, which requires we + return a proper errno, not an unchanged brk value. */ + return -TARGET_ENOMEM; +#endif + /* For everything else, return the previous break. */ + return target_brk; +} + +static inline abi_long copy_from_user_fdset(fd_set *fds, + abi_ulong target_fds_addr, + int n) +{ + int i, nw, j, k; + abi_ulong b, *target_fds; + + nw = (n + TARGET_ABI_BITS - 1) / TARGET_ABI_BITS; + if (!(target_fds = lock_user(VERIFY_READ, + target_fds_addr, + sizeof(abi_ulong) * nw, + 1))) + return -TARGET_EFAULT; + + FD_ZERO(fds); + k = 0; + for (i = 0; i < nw; i++) { + /* grab the abi_ulong */ + __get_user(b, &target_fds[i]); + for (j = 0; j < TARGET_ABI_BITS; j++) { + /* check the bit inside the abi_ulong */ + if ((b >> j) & 1) + FD_SET(k, fds); + k++; + } + } + + unlock_user(target_fds, target_fds_addr, 0); + + return 0; +} + +static inline abi_ulong copy_from_user_fdset_ptr(fd_set *fds, fd_set **fds_ptr, + abi_ulong target_fds_addr, + int n) +{ + if (target_fds_addr) { + if (copy_from_user_fdset(fds, target_fds_addr, n)) + return -TARGET_EFAULT; + *fds_ptr = fds; + } else { + *fds_ptr = NULL; + } + return 0; +} + +static inline abi_long copy_to_user_fdset(abi_ulong target_fds_addr, + const fd_set *fds, + int n) +{ + int i, nw, j, k; + abi_long v; + abi_ulong *target_fds; + + nw = (n + TARGET_ABI_BITS - 1) / TARGET_ABI_BITS; + if (!(target_fds = lock_user(VERIFY_WRITE, + target_fds_addr, + sizeof(abi_ulong) * nw, + 0))) + return -TARGET_EFAULT; + + k = 0; + for (i = 0; i < nw; i++) { + v = 0; + for (j = 0; j < TARGET_ABI_BITS; j++) { + v |= ((abi_ulong)(FD_ISSET(k, fds) != 0) << j); + k++; + } + __put_user(v, &target_fds[i]); + } + + unlock_user(target_fds, target_fds_addr, sizeof(abi_ulong) * nw); + + return 0; +} + +#if defined(__alpha__) +#define HOST_HZ 1024 +#else +#define HOST_HZ 100 +#endif + +static inline abi_long host_to_target_clock_t(long ticks) +{ +#if HOST_HZ == TARGET_HZ + return ticks; +#else + return ((int64_t)ticks * TARGET_HZ) / HOST_HZ; +#endif +} + +static inline abi_long host_to_target_rusage(abi_ulong target_addr, + const struct rusage *rusage) +{ + struct target_rusage *target_rusage; + + if (!lock_user_struct(VERIFY_WRITE, target_rusage, target_addr, 0)) + return -TARGET_EFAULT; + target_rusage->ru_utime.tv_sec = tswapal(rusage->ru_utime.tv_sec); + target_rusage->ru_utime.tv_usec = tswapal(rusage->ru_utime.tv_usec); + target_rusage->ru_stime.tv_sec = tswapal(rusage->ru_stime.tv_sec); + target_rusage->ru_stime.tv_usec = tswapal(rusage->ru_stime.tv_usec); + target_rusage->ru_maxrss = tswapal(rusage->ru_maxrss); + target_rusage->ru_ixrss = tswapal(rusage->ru_ixrss); + target_rusage->ru_idrss = tswapal(rusage->ru_idrss); + target_rusage->ru_isrss = tswapal(rusage->ru_isrss); + target_rusage->ru_minflt = tswapal(rusage->ru_minflt); + target_rusage->ru_majflt = tswapal(rusage->ru_majflt); + target_rusage->ru_nswap = tswapal(rusage->ru_nswap); + target_rusage->ru_inblock = tswapal(rusage->ru_inblock); + target_rusage->ru_oublock = tswapal(rusage->ru_oublock); + target_rusage->ru_msgsnd = tswapal(rusage->ru_msgsnd); + target_rusage->ru_msgrcv = tswapal(rusage->ru_msgrcv); + target_rusage->ru_nsignals = tswapal(rusage->ru_nsignals); + target_rusage->ru_nvcsw = tswapal(rusage->ru_nvcsw); + target_rusage->ru_nivcsw = tswapal(rusage->ru_nivcsw); + unlock_user_struct(target_rusage, target_addr, 1); + + return 0; +} + +static inline rlim_t target_to_host_rlim(abi_ulong target_rlim) +{ + abi_ulong target_rlim_swap; + rlim_t result; + + target_rlim_swap = tswapal(target_rlim); + if (target_rlim_swap == TARGET_RLIM_INFINITY) + return RLIM_INFINITY; + + result = target_rlim_swap; + if (target_rlim_swap != (rlim_t)result) + return RLIM_INFINITY; + + return result; +} + +static inline abi_ulong host_to_target_rlim(rlim_t rlim) +{ + abi_ulong target_rlim_swap; + abi_ulong result; + + if (rlim == RLIM_INFINITY || rlim != (abi_long)rlim) + target_rlim_swap = TARGET_RLIM_INFINITY; + else + target_rlim_swap = rlim; + result = tswapal(target_rlim_swap); + + return result; +} + +static inline int target_to_host_resource(int code) +{ + switch (code) { + case TARGET_RLIMIT_AS: + return RLIMIT_AS; + case TARGET_RLIMIT_CORE: + return RLIMIT_CORE; + case TARGET_RLIMIT_CPU: + return RLIMIT_CPU; + case TARGET_RLIMIT_DATA: + return RLIMIT_DATA; + case TARGET_RLIMIT_FSIZE: + return RLIMIT_FSIZE; + case TARGET_RLIMIT_LOCKS: + return RLIMIT_LOCKS; + case TARGET_RLIMIT_MEMLOCK: + return RLIMIT_MEMLOCK; + case TARGET_RLIMIT_MSGQUEUE: + return RLIMIT_MSGQUEUE; + case TARGET_RLIMIT_NICE: + return RLIMIT_NICE; + case TARGET_RLIMIT_NOFILE: + return RLIMIT_NOFILE; + case TARGET_RLIMIT_NPROC: + return RLIMIT_NPROC; + case TARGET_RLIMIT_RSS: + return RLIMIT_RSS; + case TARGET_RLIMIT_RTPRIO: + return RLIMIT_RTPRIO; + case TARGET_RLIMIT_SIGPENDING: + return RLIMIT_SIGPENDING; + case TARGET_RLIMIT_STACK: + return RLIMIT_STACK; + default: + return code; + } +} + +static inline abi_long copy_from_user_timeval(struct timeval *tv, + abi_ulong target_tv_addr) +{ + struct target_timeval *target_tv; + + if (!lock_user_struct(VERIFY_READ, target_tv, target_tv_addr, 1)) + return -TARGET_EFAULT; + + __get_user(tv->tv_sec, &target_tv->tv_sec); + __get_user(tv->tv_usec, &target_tv->tv_usec); + + unlock_user_struct(target_tv, target_tv_addr, 0); + + return 0; +} + +static inline abi_long copy_to_user_timeval(abi_ulong target_tv_addr, + const struct timeval *tv) +{ + struct target_timeval *target_tv; + + if (!lock_user_struct(VERIFY_WRITE, target_tv, target_tv_addr, 0)) + return -TARGET_EFAULT; + + __put_user(tv->tv_sec, &target_tv->tv_sec); + __put_user(tv->tv_usec, &target_tv->tv_usec); + + unlock_user_struct(target_tv, target_tv_addr, 1); + + return 0; +} + +static inline abi_long copy_from_user_timezone(struct timezone *tz, + abi_ulong target_tz_addr) +{ + struct target_timezone *target_tz; + + if (!lock_user_struct(VERIFY_READ, target_tz, target_tz_addr, 1)) { + return -TARGET_EFAULT; + } + + __get_user(tz->tz_minuteswest, &target_tz->tz_minuteswest); + __get_user(tz->tz_dsttime, &target_tz->tz_dsttime); + + unlock_user_struct(target_tz, target_tz_addr, 0); + + return 0; +} + +#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) +#include <mqueue.h> + +static inline abi_long copy_from_user_mq_attr(struct mq_attr *attr, + abi_ulong target_mq_attr_addr) +{ + struct target_mq_attr *target_mq_attr; + + if (!lock_user_struct(VERIFY_READ, target_mq_attr, + target_mq_attr_addr, 1)) + return -TARGET_EFAULT; + + __get_user(attr->mq_flags, &target_mq_attr->mq_flags); + __get_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); + __get_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); + __get_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); + + unlock_user_struct(target_mq_attr, target_mq_attr_addr, 0); + + return 0; +} + +static inline abi_long copy_to_user_mq_attr(abi_ulong target_mq_attr_addr, + const struct mq_attr *attr) +{ + struct target_mq_attr *target_mq_attr; + + if (!lock_user_struct(VERIFY_WRITE, target_mq_attr, + target_mq_attr_addr, 0)) + return -TARGET_EFAULT; + + __put_user(attr->mq_flags, &target_mq_attr->mq_flags); + __put_user(attr->mq_maxmsg, &target_mq_attr->mq_maxmsg); + __put_user(attr->mq_msgsize, &target_mq_attr->mq_msgsize); + __put_user(attr->mq_curmsgs, &target_mq_attr->mq_curmsgs); + + unlock_user_struct(target_mq_attr, target_mq_attr_addr, 1); + + return 0; +} +#endif + +#if defined(TARGET_NR_select) || defined(TARGET_NR__newselect) +/* do_select() must return target values and target errnos. */ +static abi_long do_select(int n, + abi_ulong rfd_addr, abi_ulong wfd_addr, + abi_ulong efd_addr, abi_ulong target_tv_addr) +{ + fd_set rfds, wfds, efds; + fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; + struct timeval tv, *tv_ptr; + abi_long ret; + + ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); + if (ret) { + return ret; + } + ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); + if (ret) { + return ret; + } + ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); + if (ret) { + return ret; + } + + if (target_tv_addr) { + if (copy_from_user_timeval(&tv, target_tv_addr)) + return -TARGET_EFAULT; + tv_ptr = &tv; + } else { + tv_ptr = NULL; + } + + ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr)); + + if (!is_error(ret)) { + if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) + return -TARGET_EFAULT; + if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) + return -TARGET_EFAULT; + if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) + return -TARGET_EFAULT; + + if (target_tv_addr && copy_to_user_timeval(target_tv_addr, &tv)) + return -TARGET_EFAULT; + } + + return ret; +} +#endif + +static abi_long do_pipe2(int host_pipe[], int flags) +{ +#ifdef CONFIG_PIPE2 + return pipe2(host_pipe, flags); +#else + return -ENOSYS; +#endif +} + +static abi_long do_pipe(void *cpu_env, abi_ulong pipedes, + int flags, int is_pipe2) +{ + int host_pipe[2]; + abi_long ret; + ret = flags ? do_pipe2(host_pipe, flags) : pipe(host_pipe); + + if (is_error(ret)) + return get_errno(ret); + + /* Several targets have special calling conventions for the original + pipe syscall, but didn't replicate this into the pipe2 syscall. */ + if (!is_pipe2) { +#if defined(TARGET_ALPHA) + ((CPUAlphaState *)cpu_env)->ir[IR_A4] = host_pipe[1]; + return host_pipe[0]; +#elif defined(TARGET_MIPS) + ((CPUMIPSState*)cpu_env)->active_tc.gpr[3] = host_pipe[1]; + return host_pipe[0]; +#elif defined(TARGET_SH4) + ((CPUSH4State*)cpu_env)->gregs[1] = host_pipe[1]; + return host_pipe[0]; +#elif defined(TARGET_SPARC) + ((CPUSPARCState*)cpu_env)->regwptr[1] = host_pipe[1]; + return host_pipe[0]; +#endif + } + + if (put_user_s32(host_pipe[0], pipedes) + || put_user_s32(host_pipe[1], pipedes + sizeof(host_pipe[0]))) + return -TARGET_EFAULT; + return get_errno(ret); +} + +static inline abi_long target_to_host_ip_mreq(struct ip_mreqn *mreqn, + abi_ulong target_addr, + socklen_t len) +{ + struct target_ip_mreqn *target_smreqn; + + target_smreqn = lock_user(VERIFY_READ, target_addr, len, 1); + if (!target_smreqn) + return -TARGET_EFAULT; + mreqn->imr_multiaddr.s_addr = target_smreqn->imr_multiaddr.s_addr; + mreqn->imr_address.s_addr = target_smreqn->imr_address.s_addr; + if (len == sizeof(struct target_ip_mreqn)) + mreqn->imr_ifindex = tswapal(target_smreqn->imr_ifindex); + unlock_user(target_smreqn, target_addr, 0); + + return 0; +} + +static inline abi_long target_to_host_sockaddr(struct sockaddr *addr, + abi_ulong target_addr, + socklen_t len) +{ + const socklen_t unix_maxlen = sizeof (struct sockaddr_un); + sa_family_t sa_family; + struct target_sockaddr *target_saddr; + + target_saddr = lock_user(VERIFY_READ, target_addr, len, 1); + if (!target_saddr) + return -TARGET_EFAULT; + + sa_family = tswap16(target_saddr->sa_family); + + /* Oops. The caller might send a incomplete sun_path; sun_path + * must be terminated by \0 (see the manual page), but + * unfortunately it is quite common to specify sockaddr_un + * length as "strlen(x->sun_path)" while it should be + * "strlen(...) + 1". We'll fix that here if needed. + * Linux kernel has a similar feature. + */ + + if (sa_family == AF_UNIX) { + if (len < unix_maxlen && len > 0) { + char *cp = (char*)target_saddr; + + if ( cp[len-1] && !cp[len] ) + len++; + } + if (len > unix_maxlen) + len = unix_maxlen; + } + + memcpy(addr, target_saddr, len); + addr->sa_family = sa_family; + if (sa_family == AF_PACKET) { + struct target_sockaddr_ll *lladdr; + + lladdr = (struct target_sockaddr_ll *)addr; + lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex); + lladdr->sll_hatype = tswap16(lladdr->sll_hatype); + } + unlock_user(target_saddr, target_addr, 0); + + return 0; +} + +static inline abi_long host_to_target_sockaddr(abi_ulong target_addr, + struct sockaddr *addr, + socklen_t len) +{ + struct target_sockaddr *target_saddr; + + target_saddr = lock_user(VERIFY_WRITE, target_addr, len, 0); + if (!target_saddr) + return -TARGET_EFAULT; + memcpy(target_saddr, addr, len); + target_saddr->sa_family = tswap16(addr->sa_family); + unlock_user(target_saddr, target_addr, len); + + return 0; +} + +static inline abi_long target_to_host_cmsg(struct msghdr *msgh, + struct target_msghdr *target_msgh) +{ + struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); + abi_long msg_controllen; + abi_ulong target_cmsg_addr; + struct target_cmsghdr *target_cmsg; + socklen_t space = 0; + + msg_controllen = tswapal(target_msgh->msg_controllen); + if (msg_controllen < sizeof (struct target_cmsghdr)) + goto the_end; + target_cmsg_addr = tswapal(target_msgh->msg_control); + target_cmsg = lock_user(VERIFY_READ, target_cmsg_addr, msg_controllen, 1); + if (!target_cmsg) + return -TARGET_EFAULT; + + while (cmsg && target_cmsg) { + void *data = CMSG_DATA(cmsg); + void *target_data = TARGET_CMSG_DATA(target_cmsg); + + int len = tswapal(target_cmsg->cmsg_len) + - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr)); + + space += CMSG_SPACE(len); + if (space > msgh->msg_controllen) { + space -= CMSG_SPACE(len); + /* This is a QEMU bug, since we allocated the payload + * area ourselves (unlike overflow in host-to-target + * conversion, which is just the guest giving us a buffer + * that's too small). It can't happen for the payload types + * we currently support; if it becomes an issue in future + * we would need to improve our allocation strategy to + * something more intelligent than "twice the size of the + * target buffer we're reading from". + */ + gemu_log("Host cmsg overflow\n"); + break; + } + + if (tswap32(target_cmsg->cmsg_level) == TARGET_SOL_SOCKET) { + cmsg->cmsg_level = SOL_SOCKET; + } else { + cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level); + } + cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type); + cmsg->cmsg_len = CMSG_LEN(len); + + if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) { + int *fd = (int *)data; + int *target_fd = (int *)target_data; + int i, numfds = len / sizeof(int); + + for (i = 0; i < numfds; i++) { + __get_user(fd[i], target_fd + i); + } + } else if (cmsg->cmsg_level == SOL_SOCKET + && cmsg->cmsg_type == SCM_CREDENTIALS) { + struct ucred *cred = (struct ucred *)data; + struct target_ucred *target_cred = + (struct target_ucred *)target_data; + + __get_user(cred->pid, &target_cred->pid); + __get_user(cred->uid, &target_cred->uid); + __get_user(cred->gid, &target_cred->gid); + } else { + gemu_log("Unsupported ancillary data: %d/%d\n", + cmsg->cmsg_level, cmsg->cmsg_type); + memcpy(data, target_data, len); + } + + cmsg = CMSG_NXTHDR(msgh, cmsg); + target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg); + } + unlock_user(target_cmsg, target_cmsg_addr, 0); + the_end: + msgh->msg_controllen = space; + return 0; +} + +static inline abi_long host_to_target_cmsg(struct target_msghdr *target_msgh, + struct msghdr *msgh) +{ + struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh); + abi_long msg_controllen; + abi_ulong target_cmsg_addr; + struct target_cmsghdr *target_cmsg; + socklen_t space = 0; + + msg_controllen = tswapal(target_msgh->msg_controllen); + if (msg_controllen < sizeof (struct target_cmsghdr)) + goto the_end; + target_cmsg_addr = tswapal(target_msgh->msg_control); + target_cmsg = lock_user(VERIFY_WRITE, target_cmsg_addr, msg_controllen, 0); + if (!target_cmsg) + return -TARGET_EFAULT; + + while (cmsg && target_cmsg) { + void *data = CMSG_DATA(cmsg); + void *target_data = TARGET_CMSG_DATA(target_cmsg); + + int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr)); + int tgt_len, tgt_space; + + /* We never copy a half-header but may copy half-data; + * this is Linux's behaviour in put_cmsg(). Note that + * truncation here is a guest problem (which we report + * to the guest via the CTRUNC bit), unlike truncation + * in target_to_host_cmsg, which is a QEMU bug. + */ + if (msg_controllen < sizeof(struct cmsghdr)) { + target_msgh->msg_flags |= tswap32(MSG_CTRUNC); + break; + } + + if (cmsg->cmsg_level == SOL_SOCKET) { + target_cmsg->cmsg_level = tswap32(TARGET_SOL_SOCKET); + } else { + target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level); + } + target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type); + + tgt_len = TARGET_CMSG_LEN(len); + + /* Payload types which need a different size of payload on + * the target must adjust tgt_len here. + */ + switch (cmsg->cmsg_level) { + case SOL_SOCKET: + switch (cmsg->cmsg_type) { + case SO_TIMESTAMP: + tgt_len = sizeof(struct target_timeval); + break; + default: + break; + } + default: + break; + } + + if (msg_controllen < tgt_len) { + target_msgh->msg_flags |= tswap32(MSG_CTRUNC); + tgt_len = msg_controllen; + } + + /* We must now copy-and-convert len bytes of payload + * into tgt_len bytes of destination space. Bear in mind + * that in both source and destination we may be dealing + * with a truncated value! + */ + switch (cmsg->cmsg_level) { + case SOL_SOCKET: + switch (cmsg->cmsg_type) { + case SCM_RIGHTS: + { + int *fd = (int *)data; + int *target_fd = (int *)target_data; + int i, numfds = tgt_len / sizeof(int); + + for (i = 0; i < numfds; i++) { + __put_user(fd[i], target_fd + i); + } + break; + } + case SO_TIMESTAMP: + { + struct timeval *tv = (struct timeval *)data; + struct target_timeval *target_tv = + (struct target_timeval *)target_data; + + if (len != sizeof(struct timeval) || + tgt_len != sizeof(struct target_timeval)) { + goto unimplemented; + } + + /* copy struct timeval to target */ + __put_user(tv->tv_sec, &target_tv->tv_sec); + __put_user(tv->tv_usec, &target_tv->tv_usec); + break; + } + case SCM_CREDENTIALS: + { + struct ucred *cred = (struct ucred *)data; + struct target_ucred *target_cred = + (struct target_ucred *)target_data; + + __put_user(cred->pid, &target_cred->pid); + __put_user(cred->uid, &target_cred->uid); + __put_user(cred->gid, &target_cred->gid); + break; + } + default: + goto unimplemented; + } + break; + + default: + unimplemented: + gemu_log("Unsupported ancillary data: %d/%d\n", + cmsg->cmsg_level, cmsg->cmsg_type); + memcpy(target_data, data, MIN(len, tgt_len)); + if (tgt_len > len) { + memset(target_data + len, 0, tgt_len - len); + } + } + + target_cmsg->cmsg_len = tswapal(tgt_len); + tgt_space = TARGET_CMSG_SPACE(tgt_len); + if (msg_controllen < tgt_space) { + tgt_space = msg_controllen; + } + msg_controllen -= tgt_space; + space += tgt_space; + cmsg = CMSG_NXTHDR(msgh, cmsg); + target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg); + } + unlock_user(target_cmsg, target_cmsg_addr, space); + the_end: + target_msgh->msg_controllen = tswapal(space); + return 0; +} + +/* do_setsockopt() Must return target values and target errnos. */ +static abi_long do_setsockopt(int sockfd, int level, int optname, + abi_ulong optval_addr, socklen_t optlen) +{ + abi_long ret; + int val; + struct ip_mreqn *ip_mreq; + struct ip_mreq_source *ip_mreq_source; + + switch(level) { + case SOL_TCP: + /* TCP options all take an 'int' value. */ + if (optlen < sizeof(uint32_t)) + return -TARGET_EINVAL; + + if (get_user_u32(val, optval_addr)) + return -TARGET_EFAULT; + ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); + break; + case SOL_IP: + switch(optname) { + case IP_TOS: + case IP_TTL: + case IP_HDRINCL: + case IP_ROUTER_ALERT: + case IP_RECVOPTS: + case IP_RETOPTS: + case IP_PKTINFO: + case IP_MTU_DISCOVER: + case IP_RECVERR: + case IP_RECVTOS: +#ifdef IP_FREEBIND + case IP_FREEBIND: +#endif + case IP_MULTICAST_TTL: + case IP_MULTICAST_LOOP: + val = 0; + if (optlen >= sizeof(uint32_t)) { + if (get_user_u32(val, optval_addr)) + return -TARGET_EFAULT; + } else if (optlen >= 1) { + if (get_user_u8(val, optval_addr)) + return -TARGET_EFAULT; + } + ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val))); + break; + case IP_ADD_MEMBERSHIP: + case IP_DROP_MEMBERSHIP: + if (optlen < sizeof (struct target_ip_mreq) || + optlen > sizeof (struct target_ip_mreqn)) + return -TARGET_EINVAL; + + ip_mreq = (struct ip_mreqn *) alloca(optlen); + target_to_host_ip_mreq(ip_mreq, optval_addr, optlen); + ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq, optlen)); + break; + + case IP_BLOCK_SOURCE: + case IP_UNBLOCK_SOURCE: + case IP_ADD_SOURCE_MEMBERSHIP: + case IP_DROP_SOURCE_MEMBERSHIP: + if (optlen != sizeof (struct target_ip_mreq_source)) + return -TARGET_EINVAL; + + ip_mreq_source = lock_user(VERIFY_READ, optval_addr, optlen, 1); + ret = get_errno(setsockopt(sockfd, level, optname, ip_mreq_source, optlen)); + unlock_user (ip_mreq_source, optval_addr, 0); + break; + + default: + goto unimplemented; + } + break; + case SOL_IPV6: + switch (optname) { + case IPV6_MTU_DISCOVER: + case IPV6_MTU: + case IPV6_V6ONLY: + case IPV6_RECVPKTINFO: + val = 0; + if (optlen < sizeof(uint32_t)) { + return -TARGET_EINVAL; + } + if (get_user_u32(val, optval_addr)) { + return -TARGET_EFAULT; + } + ret = get_errno(setsockopt(sockfd, level, optname, + &val, sizeof(val))); + break; + default: + goto unimplemented; + } + break; + case SOL_RAW: + switch (optname) { + case ICMP_FILTER: + /* struct icmp_filter takes an u32 value */ + if (optlen < sizeof(uint32_t)) { + return -TARGET_EINVAL; + } + + if (get_user_u32(val, optval_addr)) { + return -TARGET_EFAULT; + } + ret = get_errno(setsockopt(sockfd, level, optname, + &val, sizeof(val))); + break; + + default: + goto unimplemented; + } + break; + case TARGET_SOL_SOCKET: + switch (optname) { + case TARGET_SO_RCVTIMEO: + { + struct timeval tv; + + optname = SO_RCVTIMEO; + +set_timeout: + if (optlen != sizeof(struct target_timeval)) { + return -TARGET_EINVAL; + } + + if (copy_from_user_timeval(&tv, optval_addr)) { + return -TARGET_EFAULT; + } + + ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, + &tv, sizeof(tv))); + return ret; + } + case TARGET_SO_SNDTIMEO: + optname = SO_SNDTIMEO; + goto set_timeout; + case TARGET_SO_ATTACH_FILTER: + { + struct target_sock_fprog *tfprog; + struct target_sock_filter *tfilter; + struct sock_fprog fprog; + struct sock_filter *filter; + int i; + + if (optlen != sizeof(*tfprog)) { + return -TARGET_EINVAL; + } + if (!lock_user_struct(VERIFY_READ, tfprog, optval_addr, 0)) { + return -TARGET_EFAULT; + } + if (!lock_user_struct(VERIFY_READ, tfilter, + tswapal(tfprog->filter), 0)) { + unlock_user_struct(tfprog, optval_addr, 1); + return -TARGET_EFAULT; + } + + fprog.len = tswap16(tfprog->len); + filter = malloc(fprog.len * sizeof(*filter)); + if (filter == NULL) { + unlock_user_struct(tfilter, tfprog->filter, 1); + unlock_user_struct(tfprog, optval_addr, 1); + return -TARGET_ENOMEM; + } + for (i = 0; i < fprog.len; i++) { + filter[i].code = tswap16(tfilter[i].code); + filter[i].jt = tfilter[i].jt; + filter[i].jf = tfilter[i].jf; + filter[i].k = tswap32(tfilter[i].k); + } + fprog.filter = filter; + + ret = get_errno(setsockopt(sockfd, SOL_SOCKET, + SO_ATTACH_FILTER, &fprog, sizeof(fprog))); + free(filter); + + unlock_user_struct(tfilter, tfprog->filter, 1); + unlock_user_struct(tfprog, optval_addr, 1); + return ret; + } + case TARGET_SO_BINDTODEVICE: + { + char *dev_ifname, *addr_ifname; + + if (optlen > IFNAMSIZ - 1) { + optlen = IFNAMSIZ - 1; + } + dev_ifname = lock_user(VERIFY_READ, optval_addr, optlen, 1); + if (!dev_ifname) { + return -TARGET_EFAULT; + } + optname = SO_BINDTODEVICE; + addr_ifname = alloca(IFNAMSIZ); + memcpy(addr_ifname, dev_ifname, optlen); + addr_ifname[optlen] = 0; + ret = get_errno(setsockopt(sockfd, level, optname, addr_ifname, optlen)); + unlock_user (dev_ifname, optval_addr, 0); + return ret; + } + /* Options with 'int' argument. */ + case TARGET_SO_DEBUG: + optname = SO_DEBUG; + break; + case TARGET_SO_REUSEADDR: + optname = SO_REUSEADDR; + break; + case TARGET_SO_TYPE: + optname = SO_TYPE; + break; + case TARGET_SO_ERROR: + optname = SO_ERROR; + break; + case TARGET_SO_DONTROUTE: + optname = SO_DONTROUTE; + break; + case TARGET_SO_BROADCAST: + optname = SO_BROADCAST; + break; + case TARGET_SO_SNDBUF: + optname = SO_SNDBUF; + break; + case TARGET_SO_SNDBUFFORCE: + optname = SO_SNDBUFFORCE; + break; + case TARGET_SO_RCVBUF: + optname = SO_RCVBUF; + break; + case TARGET_SO_RCVBUFFORCE: + optname = SO_RCVBUFFORCE; + break; + case TARGET_SO_KEEPALIVE: + optname = SO_KEEPALIVE; + break; + case TARGET_SO_OOBINLINE: + optname = SO_OOBINLINE; + break; + case TARGET_SO_NO_CHECK: + optname = SO_NO_CHECK; + break; + case TARGET_SO_PRIORITY: + optname = SO_PRIORITY; + break; +#ifdef SO_BSDCOMPAT + case TARGET_SO_BSDCOMPAT: + optname = SO_BSDCOMPAT; + break; +#endif + case TARGET_SO_PASSCRED: + optname = SO_PASSCRED; + break; + case TARGET_SO_PASSSEC: + optname = SO_PASSSEC; + break; + case TARGET_SO_TIMESTAMP: + optname = SO_TIMESTAMP; + break; + case TARGET_SO_RCVLOWAT: + optname = SO_RCVLOWAT; + break; + break; + default: + goto unimplemented; + } + if (optlen < sizeof(uint32_t)) + return -TARGET_EINVAL; + + if (get_user_u32(val, optval_addr)) + return -TARGET_EFAULT; + ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val))); + break; + default: + unimplemented: + gemu_log("Unsupported setsockopt level=%d optname=%d\n", level, optname); + ret = -TARGET_ENOPROTOOPT; + } + return ret; +} + +/* do_getsockopt() Must return target values and target errnos. */ +static abi_long do_getsockopt(int sockfd, int level, int optname, + abi_ulong optval_addr, abi_ulong optlen) +{ + abi_long ret; + int len, val; + socklen_t lv; + + switch(level) { + case TARGET_SOL_SOCKET: + level = SOL_SOCKET; + switch (optname) { + /* These don't just return a single integer */ + case TARGET_SO_LINGER: + case TARGET_SO_RCVTIMEO: + case TARGET_SO_SNDTIMEO: + case TARGET_SO_PEERNAME: + goto unimplemented; + case TARGET_SO_PEERCRED: { + struct ucred cr; + socklen_t crlen; + struct target_ucred *tcr; + + if (get_user_u32(len, optlen)) { + return -TARGET_EFAULT; + } + if (len < 0) { + return -TARGET_EINVAL; + } + + crlen = sizeof(cr); + ret = get_errno(getsockopt(sockfd, level, SO_PEERCRED, + &cr, &crlen)); + if (ret < 0) { + return ret; + } + if (len > crlen) { + len = crlen; + } + if (!lock_user_struct(VERIFY_WRITE, tcr, optval_addr, 0)) { + return -TARGET_EFAULT; + } + __put_user(cr.pid, &tcr->pid); + __put_user(cr.uid, &tcr->uid); + __put_user(cr.gid, &tcr->gid); + unlock_user_struct(tcr, optval_addr, 1); + if (put_user_u32(len, optlen)) { + return -TARGET_EFAULT; + } + break; + } + /* Options with 'int' argument. */ + case TARGET_SO_DEBUG: + optname = SO_DEBUG; + goto int_case; + case TARGET_SO_REUSEADDR: + optname = SO_REUSEADDR; + goto int_case; + case TARGET_SO_TYPE: + optname = SO_TYPE; + goto int_case; + case TARGET_SO_ERROR: + optname = SO_ERROR; + goto int_case; + case TARGET_SO_DONTROUTE: + optname = SO_DONTROUTE; + goto int_case; + case TARGET_SO_BROADCAST: + optname = SO_BROADCAST; + goto int_case; + case TARGET_SO_SNDBUF: + optname = SO_SNDBUF; + goto int_case; + case TARGET_SO_RCVBUF: + optname = SO_RCVBUF; + goto int_case; + case TARGET_SO_KEEPALIVE: + optname = SO_KEEPALIVE; + goto int_case; + case TARGET_SO_OOBINLINE: + optname = SO_OOBINLINE; + goto int_case; + case TARGET_SO_NO_CHECK: + optname = SO_NO_CHECK; + goto int_case; + case TARGET_SO_PRIORITY: + optname = SO_PRIORITY; + goto int_case; +#ifdef SO_BSDCOMPAT + case TARGET_SO_BSDCOMPAT: + optname = SO_BSDCOMPAT; + goto int_case; +#endif + case TARGET_SO_PASSCRED: + optname = SO_PASSCRED; + goto int_case; + case TARGET_SO_TIMESTAMP: + optname = SO_TIMESTAMP; + goto int_case; + case TARGET_SO_RCVLOWAT: + optname = SO_RCVLOWAT; + goto int_case; + case TARGET_SO_ACCEPTCONN: + optname = SO_ACCEPTCONN; + goto int_case; + default: + goto int_case; + } + break; + case SOL_TCP: + /* TCP options all take an 'int' value. */ + int_case: + if (get_user_u32(len, optlen)) + return -TARGET_EFAULT; + if (len < 0) + return -TARGET_EINVAL; + lv = sizeof(lv); + ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); + if (ret < 0) + return ret; + if (optname == SO_TYPE) { + val = host_to_target_sock_type(val); + } + if (len > lv) + len = lv; + if (len == 4) { + if (put_user_u32(val, optval_addr)) + return -TARGET_EFAULT; + } else { + if (put_user_u8(val, optval_addr)) + return -TARGET_EFAULT; + } + if (put_user_u32(len, optlen)) + return -TARGET_EFAULT; + break; + case SOL_IP: + switch(optname) { + case IP_TOS: + case IP_TTL: + case IP_HDRINCL: + case IP_ROUTER_ALERT: + case IP_RECVOPTS: + case IP_RETOPTS: + case IP_PKTINFO: + case IP_MTU_DISCOVER: + case IP_RECVERR: + case IP_RECVTOS: +#ifdef IP_FREEBIND + case IP_FREEBIND: +#endif + case IP_MULTICAST_TTL: + case IP_MULTICAST_LOOP: + if (get_user_u32(len, optlen)) + return -TARGET_EFAULT; + if (len < 0) + return -TARGET_EINVAL; + lv = sizeof(lv); + ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv)); + if (ret < 0) + return ret; + if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) { + len = 1; + if (put_user_u32(len, optlen) + || put_user_u8(val, optval_addr)) + return -TARGET_EFAULT; + } else { + if (len > sizeof(int)) + len = sizeof(int); + if (put_user_u32(len, optlen) + || put_user_u32(val, optval_addr)) + return -TARGET_EFAULT; + } + break; + default: + ret = -TARGET_ENOPROTOOPT; + break; + } + break; + default: + unimplemented: + gemu_log("getsockopt level=%d optname=%d not yet supported\n", + level, optname); + ret = -TARGET_EOPNOTSUPP; + break; + } + return ret; +} + +static struct iovec *lock_iovec(int type, abi_ulong target_addr, + int count, int copy) +{ + struct target_iovec *target_vec; + struct iovec *vec; + abi_ulong total_len, max_len; + int i; + int err = 0; + bool bad_address = false; + + if (count == 0) { + errno = 0; + return NULL; + } + if (count < 0 || count > IOV_MAX) { + errno = EINVAL; + return NULL; + } + + vec = calloc(count, sizeof(struct iovec)); + if (vec == NULL) { + errno = ENOMEM; + return NULL; + } + + target_vec = lock_user(VERIFY_READ, target_addr, + count * sizeof(struct target_iovec), 1); + if (target_vec == NULL) { + err = EFAULT; + goto fail2; + } + + /* ??? If host page size > target page size, this will result in a + value larger than what we can actually support. */ + max_len = 0x7fffffff & TARGET_PAGE_MASK; + total_len = 0; + + for (i = 0; i < count; i++) { + abi_ulong base = tswapal(target_vec[i].iov_base); + abi_long len = tswapal(target_vec[i].iov_len); + + if (len < 0) { + err = EINVAL; + goto fail; + } else if (len == 0) { + /* Zero length pointer is ignored. */ + vec[i].iov_base = 0; + } else { + vec[i].iov_base = lock_user(type, base, len, copy); + /* If the first buffer pointer is bad, this is a fault. But + * subsequent bad buffers will result in a partial write; this + * is realized by filling the vector with null pointers and + * zero lengths. */ + if (!vec[i].iov_base) { + if (i == 0) { + err = EFAULT; + goto fail; + } else { + bad_address = true; + } + } + if (bad_address) { + len = 0; + } + if (len > max_len - total_len) { + len = max_len - total_len; + } + } + vec[i].iov_len = len; + total_len += len; + } + + unlock_user(target_vec, target_addr, 0); + return vec; + + fail: + while (--i >= 0) { + if (tswapal(target_vec[i].iov_len) > 0) { + unlock_user(vec[i].iov_base, tswapal(target_vec[i].iov_base), 0); + } + } + unlock_user(target_vec, target_addr, 0); + fail2: + free(vec); + errno = err; + return NULL; +} + +static void unlock_iovec(struct iovec *vec, abi_ulong target_addr, + int count, int copy) +{ + struct target_iovec *target_vec; + int i; + + target_vec = lock_user(VERIFY_READ, target_addr, + count * sizeof(struct target_iovec), 1); + if (target_vec) { + for (i = 0; i < count; i++) { + abi_ulong base = tswapal(target_vec[i].iov_base); + abi_long len = tswapal(target_vec[i].iov_len); + if (len < 0) { + break; + } + unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0); + } + unlock_user(target_vec, target_addr, 0); + } + + free(vec); +} + +static inline int target_to_host_sock_type(int *type) +{ + int host_type = 0; + int target_type = *type; + + switch (target_type & TARGET_SOCK_TYPE_MASK) { + case TARGET_SOCK_DGRAM: + host_type = SOCK_DGRAM; + break; + case TARGET_SOCK_STREAM: + host_type = SOCK_STREAM; + break; + default: + host_type = target_type & TARGET_SOCK_TYPE_MASK; + break; + } + if (target_type & TARGET_SOCK_CLOEXEC) { +#if defined(SOCK_CLOEXEC) + host_type |= SOCK_CLOEXEC; +#else + return -TARGET_EINVAL; +#endif + } + if (target_type & TARGET_SOCK_NONBLOCK) { +#if defined(SOCK_NONBLOCK) + host_type |= SOCK_NONBLOCK; +#elif !defined(O_NONBLOCK) + return -TARGET_EINVAL; +#endif + } + *type = host_type; + return 0; +} + +/* Try to emulate socket type flags after socket creation. */ +static int sock_flags_fixup(int fd, int target_type) +{ +#if !defined(SOCK_NONBLOCK) && defined(O_NONBLOCK) + if (target_type & TARGET_SOCK_NONBLOCK) { + int flags = fcntl(fd, F_GETFL); + if (fcntl(fd, F_SETFL, O_NONBLOCK | flags) == -1) { + close(fd); + return -TARGET_EINVAL; + } + } +#endif + return fd; +} + +/* do_socket() Must return target values and target errnos. */ +static abi_long do_socket(int domain, int type, int protocol) +{ + int target_type = type; + int ret; + + ret = target_to_host_sock_type(&type); + if (ret) { + return ret; + } + + if (domain == PF_NETLINK) + return -TARGET_EAFNOSUPPORT; + ret = get_errno(socket(domain, type, protocol)); + if (ret >= 0) { + ret = sock_flags_fixup(ret, target_type); + } + return ret; +} + +/* do_bind() Must return target values and target errnos. */ +static abi_long do_bind(int sockfd, abi_ulong target_addr, + socklen_t addrlen) +{ + void *addr; + abi_long ret; + + if ((int)addrlen < 0) { + return -TARGET_EINVAL; + } + + addr = alloca(addrlen+1); + + ret = target_to_host_sockaddr(addr, target_addr, addrlen); + if (ret) + return ret; + + return get_errno(bind(sockfd, addr, addrlen)); +} + +/* do_connect() Must return target values and target errnos. */ +static abi_long do_connect(int sockfd, abi_ulong target_addr, + socklen_t addrlen) +{ + void *addr; + abi_long ret; + + if ((int)addrlen < 0) { + return -TARGET_EINVAL; + } + + addr = alloca(addrlen+1); + + ret = target_to_host_sockaddr(addr, target_addr, addrlen); + if (ret) + return ret; + + return get_errno(connect(sockfd, addr, addrlen)); +} + +/* do_sendrecvmsg_locked() Must return target values and target errnos. */ +static abi_long do_sendrecvmsg_locked(int fd, struct target_msghdr *msgp, + int flags, int send) +{ + abi_long ret, len; + struct msghdr msg; + int count; + struct iovec *vec; + abi_ulong target_vec; + + if (msgp->msg_name) { + msg.msg_namelen = tswap32(msgp->msg_namelen); + msg.msg_name = alloca(msg.msg_namelen+1); + ret = target_to_host_sockaddr(msg.msg_name, tswapal(msgp->msg_name), + msg.msg_namelen); + if (ret) { + goto out2; + } + } else { + msg.msg_name = NULL; + msg.msg_namelen = 0; + } + msg.msg_controllen = 2 * tswapal(msgp->msg_controllen); + msg.msg_control = alloca(msg.msg_controllen); + msg.msg_flags = tswap32(msgp->msg_flags); + + count = tswapal(msgp->msg_iovlen); + target_vec = tswapal(msgp->msg_iov); + vec = lock_iovec(send ? VERIFY_READ : VERIFY_WRITE, + target_vec, count, send); + if (vec == NULL) { + ret = -host_to_target_errno(errno); + goto out2; + } + msg.msg_iovlen = count; + msg.msg_iov = vec; + + if (send) { + ret = target_to_host_cmsg(&msg, msgp); + if (ret == 0) + ret = get_errno(sendmsg(fd, &msg, flags)); + } else { + ret = get_errno(recvmsg(fd, &msg, flags)); + if (!is_error(ret)) { + len = ret; + ret = host_to_target_cmsg(msgp, &msg); + if (!is_error(ret)) { + msgp->msg_namelen = tswap32(msg.msg_namelen); + if (msg.msg_name != NULL) { + ret = host_to_target_sockaddr(tswapal(msgp->msg_name), + msg.msg_name, msg.msg_namelen); + if (ret) { + goto out; + } + } + + ret = len; + } + } + } + +out: + unlock_iovec(vec, target_vec, count, !send); +out2: + return ret; +} + +static abi_long do_sendrecvmsg(int fd, abi_ulong target_msg, + int flags, int send) +{ + abi_long ret; + struct target_msghdr *msgp; + + if (!lock_user_struct(send ? VERIFY_READ : VERIFY_WRITE, + msgp, + target_msg, + send ? 1 : 0)) { + return -TARGET_EFAULT; + } + ret = do_sendrecvmsg_locked(fd, msgp, flags, send); + unlock_user_struct(msgp, target_msg, send ? 0 : 1); + return ret; +} + +#ifdef TARGET_NR_sendmmsg +/* We don't rely on the C library to have sendmmsg/recvmmsg support, + * so it might not have this *mmsg-specific flag either. + */ +#ifndef MSG_WAITFORONE +#define MSG_WAITFORONE 0x10000 +#endif + +static abi_long do_sendrecvmmsg(int fd, abi_ulong target_msgvec, + unsigned int vlen, unsigned int flags, + int send) +{ + struct target_mmsghdr *mmsgp; + abi_long ret = 0; + int i; + + if (vlen > UIO_MAXIOV) { + vlen = UIO_MAXIOV; + } + + mmsgp = lock_user(VERIFY_WRITE, target_msgvec, sizeof(*mmsgp) * vlen, 1); + if (!mmsgp) { + return -TARGET_EFAULT; + } + + for (i = 0; i < vlen; i++) { + ret = do_sendrecvmsg_locked(fd, &mmsgp[i].msg_hdr, flags, send); + if (is_error(ret)) { + break; + } + mmsgp[i].msg_len = tswap32(ret); + /* MSG_WAITFORONE turns on MSG_DONTWAIT after one packet */ + if (flags & MSG_WAITFORONE) { + flags |= MSG_DONTWAIT; + } + } + + unlock_user(mmsgp, target_msgvec, sizeof(*mmsgp) * i); + + /* Return number of datagrams sent if we sent any at all; + * otherwise return the error. + */ + if (i) { + return i; + } + return ret; +} +#endif + +/* If we don't have a system accept4() then just call accept. + * The callsites to do_accept4() will ensure that they don't + * pass a non-zero flags argument in this config. + */ +#ifndef CONFIG_ACCEPT4 +static inline int accept4(int sockfd, struct sockaddr *addr, + socklen_t *addrlen, int flags) +{ + assert(flags == 0); + return accept(sockfd, addr, addrlen); +} +#endif + +/* do_accept4() Must return target values and target errnos. */ +static abi_long do_accept4(int fd, abi_ulong target_addr, + abi_ulong target_addrlen_addr, int flags) +{ + socklen_t addrlen; + void *addr; + abi_long ret; + int host_flags; + + host_flags = target_to_host_bitmask(flags, fcntl_flags_tbl); + + if (target_addr == 0) { + return get_errno(accept4(fd, NULL, NULL, host_flags)); + } + + /* linux returns EINVAL if addrlen pointer is invalid */ + if (get_user_u32(addrlen, target_addrlen_addr)) + return -TARGET_EINVAL; + + if ((int)addrlen < 0) { + return -TARGET_EINVAL; + } + + if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) + return -TARGET_EINVAL; + + addr = alloca(addrlen); + + ret = get_errno(accept4(fd, addr, &addrlen, host_flags)); + if (!is_error(ret)) { + host_to_target_sockaddr(target_addr, addr, addrlen); + if (put_user_u32(addrlen, target_addrlen_addr)) + ret = -TARGET_EFAULT; + } + return ret; +} + +/* do_getpeername() Must return target values and target errnos. */ +static abi_long do_getpeername(int fd, abi_ulong target_addr, + abi_ulong target_addrlen_addr) +{ + socklen_t addrlen; + void *addr; + abi_long ret; + + if (get_user_u32(addrlen, target_addrlen_addr)) + return -TARGET_EFAULT; + + if ((int)addrlen < 0) { + return -TARGET_EINVAL; + } + + if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) + return -TARGET_EFAULT; + + addr = alloca(addrlen); + + ret = get_errno(getpeername(fd, addr, &addrlen)); + if (!is_error(ret)) { + host_to_target_sockaddr(target_addr, addr, addrlen); + if (put_user_u32(addrlen, target_addrlen_addr)) + ret = -TARGET_EFAULT; + } + return ret; +} + +/* do_getsockname() Must return target values and target errnos. */ +static abi_long do_getsockname(int fd, abi_ulong target_addr, + abi_ulong target_addrlen_addr) +{ + socklen_t addrlen; + void *addr; + abi_long ret; + + if (get_user_u32(addrlen, target_addrlen_addr)) + return -TARGET_EFAULT; + + if ((int)addrlen < 0) { + return -TARGET_EINVAL; + } + + if (!access_ok(VERIFY_WRITE, target_addr, addrlen)) + return -TARGET_EFAULT; + + addr = alloca(addrlen); + + ret = get_errno(getsockname(fd, addr, &addrlen)); + if (!is_error(ret)) { + host_to_target_sockaddr(target_addr, addr, addrlen); + if (put_user_u32(addrlen, target_addrlen_addr)) + ret = -TARGET_EFAULT; + } + return ret; +} + +/* do_socketpair() Must return target values and target errnos. */ +static abi_long do_socketpair(int domain, int type, int protocol, + abi_ulong target_tab_addr) +{ + int tab[2]; + abi_long ret; + + target_to_host_sock_type(&type); + + ret = get_errno(socketpair(domain, type, protocol, tab)); + if (!is_error(ret)) { + if (put_user_s32(tab[0], target_tab_addr) + || put_user_s32(tab[1], target_tab_addr + sizeof(tab[0]))) + ret = -TARGET_EFAULT; + } + return ret; +} + +/* do_sendto() Must return target values and target errnos. */ +static abi_long do_sendto(int fd, abi_ulong msg, size_t len, int flags, + abi_ulong target_addr, socklen_t addrlen) +{ + void *addr; + void *host_msg; + abi_long ret; + + if ((int)addrlen < 0) { + return -TARGET_EINVAL; + } + + host_msg = lock_user(VERIFY_READ, msg, len, 1); + if (!host_msg) + return -TARGET_EFAULT; + if (target_addr) { + addr = alloca(addrlen+1); + ret = target_to_host_sockaddr(addr, target_addr, addrlen); + if (ret) { + unlock_user(host_msg, msg, 0); + return ret; + } + ret = get_errno(sendto(fd, host_msg, len, flags, addr, addrlen)); + } else { + ret = get_errno(send(fd, host_msg, len, flags)); + } + unlock_user(host_msg, msg, 0); + return ret; +} + +/* do_recvfrom() Must return target values and target errnos. */ +static abi_long do_recvfrom(int fd, abi_ulong msg, size_t len, int flags, + abi_ulong target_addr, + abi_ulong target_addrlen) +{ + socklen_t addrlen; + void *addr; + void *host_msg; + abi_long ret; + + host_msg = lock_user(VERIFY_WRITE, msg, len, 0); + if (!host_msg) + return -TARGET_EFAULT; + if (target_addr) { + if (get_user_u32(addrlen, target_addrlen)) { + ret = -TARGET_EFAULT; + goto fail; + } + if ((int)addrlen < 0) { + ret = -TARGET_EINVAL; + goto fail; + } + addr = alloca(addrlen); + ret = get_errno(recvfrom(fd, host_msg, len, flags, addr, &addrlen)); + } else { + addr = NULL; /* To keep compiler quiet. */ + ret = get_errno(qemu_recv(fd, host_msg, len, flags)); + } + if (!is_error(ret)) { + if (target_addr) { + host_to_target_sockaddr(target_addr, addr, addrlen); + if (put_user_u32(addrlen, target_addrlen)) { + ret = -TARGET_EFAULT; + goto fail; + } + } + unlock_user(host_msg, msg, len); + } else { +fail: + unlock_user(host_msg, msg, 0); + } + return ret; +} + +#ifdef TARGET_NR_socketcall +/* do_socketcall() Must return target values and target errnos. */ +static abi_long do_socketcall(int num, abi_ulong vptr) +{ + static const unsigned ac[] = { /* number of arguments per call */ + [SOCKOP_socket] = 3, /* domain, type, protocol */ + [SOCKOP_bind] = 3, /* sockfd, addr, addrlen */ + [SOCKOP_connect] = 3, /* sockfd, addr, addrlen */ + [SOCKOP_listen] = 2, /* sockfd, backlog */ + [SOCKOP_accept] = 3, /* sockfd, addr, addrlen */ + [SOCKOP_accept4] = 4, /* sockfd, addr, addrlen, flags */ + [SOCKOP_getsockname] = 3, /* sockfd, addr, addrlen */ + [SOCKOP_getpeername] = 3, /* sockfd, addr, addrlen */ + [SOCKOP_socketpair] = 4, /* domain, type, protocol, tab */ + [SOCKOP_send] = 4, /* sockfd, msg, len, flags */ + [SOCKOP_recv] = 4, /* sockfd, msg, len, flags */ + [SOCKOP_sendto] = 6, /* sockfd, msg, len, flags, addr, addrlen */ + [SOCKOP_recvfrom] = 6, /* sockfd, msg, len, flags, addr, addrlen */ + [SOCKOP_shutdown] = 2, /* sockfd, how */ + [SOCKOP_sendmsg] = 3, /* sockfd, msg, flags */ + [SOCKOP_recvmsg] = 3, /* sockfd, msg, flags */ + [SOCKOP_setsockopt] = 5, /* sockfd, level, optname, optval, optlen */ + [SOCKOP_getsockopt] = 5, /* sockfd, level, optname, optval, optlen */ + }; + abi_long a[6]; /* max 6 args */ + + /* first, collect the arguments in a[] according to ac[] */ + if (num >= 0 && num < ARRAY_SIZE(ac)) { + unsigned i; + assert(ARRAY_SIZE(a) >= ac[num]); /* ensure we have space for args */ + for (i = 0; i < ac[num]; ++i) { + if (get_user_ual(a[i], vptr + i * sizeof(abi_long)) != 0) { + return -TARGET_EFAULT; + } + } + } + + /* now when we have the args, actually handle the call */ + switch (num) { + case SOCKOP_socket: /* domain, type, protocol */ + return do_socket(a[0], a[1], a[2]); + case SOCKOP_bind: /* sockfd, addr, addrlen */ + return do_bind(a[0], a[1], a[2]); + case SOCKOP_connect: /* sockfd, addr, addrlen */ + return do_connect(a[0], a[1], a[2]); + case SOCKOP_listen: /* sockfd, backlog */ + return get_errno(listen(a[0], a[1])); + case SOCKOP_accept: /* sockfd, addr, addrlen */ + return do_accept4(a[0], a[1], a[2], 0); + case SOCKOP_accept4: /* sockfd, addr, addrlen, flags */ + return do_accept4(a[0], a[1], a[2], a[3]); + case SOCKOP_getsockname: /* sockfd, addr, addrlen */ + return do_getsockname(a[0], a[1], a[2]); + case SOCKOP_getpeername: /* sockfd, addr, addrlen */ + return do_getpeername(a[0], a[1], a[2]); + case SOCKOP_socketpair: /* domain, type, protocol, tab */ + return do_socketpair(a[0], a[1], a[2], a[3]); + case SOCKOP_send: /* sockfd, msg, len, flags */ + return do_sendto(a[0], a[1], a[2], a[3], 0, 0); + case SOCKOP_recv: /* sockfd, msg, len, flags */ + return do_recvfrom(a[0], a[1], a[2], a[3], 0, 0); + case SOCKOP_sendto: /* sockfd, msg, len, flags, addr, addrlen */ + return do_sendto(a[0], a[1], a[2], a[3], a[4], a[5]); + case SOCKOP_recvfrom: /* sockfd, msg, len, flags, addr, addrlen */ + return do_recvfrom(a[0], a[1], a[2], a[3], a[4], a[5]); + case SOCKOP_shutdown: /* sockfd, how */ + return get_errno(shutdown(a[0], a[1])); + case SOCKOP_sendmsg: /* sockfd, msg, flags */ + return do_sendrecvmsg(a[0], a[1], a[2], 1); + case SOCKOP_recvmsg: /* sockfd, msg, flags */ + return do_sendrecvmsg(a[0], a[1], a[2], 0); + case SOCKOP_setsockopt: /* sockfd, level, optname, optval, optlen */ + return do_setsockopt(a[0], a[1], a[2], a[3], a[4]); + case SOCKOP_getsockopt: /* sockfd, level, optname, optval, optlen */ + return do_getsockopt(a[0], a[1], a[2], a[3], a[4]); + default: + gemu_log("Unsupported socketcall: %d\n", num); + return -TARGET_ENOSYS; + } +} +#endif + +#define N_SHM_REGIONS 32 + +static struct shm_region { + abi_ulong start; + abi_ulong size; +} shm_regions[N_SHM_REGIONS]; + +struct target_semid_ds +{ + struct target_ipc_perm sem_perm; + abi_ulong sem_otime; +#if !defined(TARGET_PPC64) + abi_ulong __unused1; +#endif + abi_ulong sem_ctime; +#if !defined(TARGET_PPC64) + abi_ulong __unused2; +#endif + abi_ulong sem_nsems; + abi_ulong __unused3; + abi_ulong __unused4; +}; + +static inline abi_long target_to_host_ipc_perm(struct ipc_perm *host_ip, + abi_ulong target_addr) +{ + struct target_ipc_perm *target_ip; + struct target_semid_ds *target_sd; + + if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) + return -TARGET_EFAULT; + target_ip = &(target_sd->sem_perm); + host_ip->__key = tswap32(target_ip->__key); + host_ip->uid = tswap32(target_ip->uid); + host_ip->gid = tswap32(target_ip->gid); + host_ip->cuid = tswap32(target_ip->cuid); + host_ip->cgid = tswap32(target_ip->cgid); +#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) + host_ip->mode = tswap32(target_ip->mode); +#else + host_ip->mode = tswap16(target_ip->mode); +#endif +#if defined(TARGET_PPC) + host_ip->__seq = tswap32(target_ip->__seq); +#else + host_ip->__seq = tswap16(target_ip->__seq); +#endif + unlock_user_struct(target_sd, target_addr, 0); + return 0; +} + +static inline abi_long host_to_target_ipc_perm(abi_ulong target_addr, + struct ipc_perm *host_ip) +{ + struct target_ipc_perm *target_ip; + struct target_semid_ds *target_sd; + + if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) + return -TARGET_EFAULT; + target_ip = &(target_sd->sem_perm); + target_ip->__key = tswap32(host_ip->__key); + target_ip->uid = tswap32(host_ip->uid); + target_ip->gid = tswap32(host_ip->gid); + target_ip->cuid = tswap32(host_ip->cuid); + target_ip->cgid = tswap32(host_ip->cgid); +#if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_PPC) + target_ip->mode = tswap32(host_ip->mode); +#else + target_ip->mode = tswap16(host_ip->mode); +#endif +#if defined(TARGET_PPC) + target_ip->__seq = tswap32(host_ip->__seq); +#else + target_ip->__seq = tswap16(host_ip->__seq); +#endif + unlock_user_struct(target_sd, target_addr, 1); + return 0; +} + +static inline abi_long target_to_host_semid_ds(struct semid_ds *host_sd, + abi_ulong target_addr) +{ + struct target_semid_ds *target_sd; + + if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) + return -TARGET_EFAULT; + if (target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr)) + return -TARGET_EFAULT; + host_sd->sem_nsems = tswapal(target_sd->sem_nsems); + host_sd->sem_otime = tswapal(target_sd->sem_otime); + host_sd->sem_ctime = tswapal(target_sd->sem_ctime); + unlock_user_struct(target_sd, target_addr, 0); + return 0; +} + +static inline abi_long host_to_target_semid_ds(abi_ulong target_addr, + struct semid_ds *host_sd) +{ + struct target_semid_ds *target_sd; + + if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) + return -TARGET_EFAULT; + if (host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm))) + return -TARGET_EFAULT; + target_sd->sem_nsems = tswapal(host_sd->sem_nsems); + target_sd->sem_otime = tswapal(host_sd->sem_otime); + target_sd->sem_ctime = tswapal(host_sd->sem_ctime); + unlock_user_struct(target_sd, target_addr, 1); + return 0; +} + +struct target_seminfo { + int semmap; + int semmni; + int semmns; + int semmnu; + int semmsl; + int semopm; + int semume; + int semusz; + int semvmx; + int semaem; +}; + +static inline abi_long host_to_target_seminfo(abi_ulong target_addr, + struct seminfo *host_seminfo) +{ + struct target_seminfo *target_seminfo; + if (!lock_user_struct(VERIFY_WRITE, target_seminfo, target_addr, 0)) + return -TARGET_EFAULT; + __put_user(host_seminfo->semmap, &target_seminfo->semmap); + __put_user(host_seminfo->semmni, &target_seminfo->semmni); + __put_user(host_seminfo->semmns, &target_seminfo->semmns); + __put_user(host_seminfo->semmnu, &target_seminfo->semmnu); + __put_user(host_seminfo->semmsl, &target_seminfo->semmsl); + __put_user(host_seminfo->semopm, &target_seminfo->semopm); + __put_user(host_seminfo->semume, &target_seminfo->semume); + __put_user(host_seminfo->semusz, &target_seminfo->semusz); + __put_user(host_seminfo->semvmx, &target_seminfo->semvmx); + __put_user(host_seminfo->semaem, &target_seminfo->semaem); + unlock_user_struct(target_seminfo, target_addr, 1); + return 0; +} + +union semun { + int val; + struct semid_ds *buf; + unsigned short *array; + struct seminfo *__buf; +}; + +union target_semun { + int val; + abi_ulong buf; + abi_ulong array; + abi_ulong __buf; +}; + +static inline abi_long target_to_host_semarray(int semid, unsigned short **host_array, + abi_ulong target_addr) +{ + int nsems; + unsigned short *array; + union semun semun; + struct semid_ds semid_ds; + int i, ret; + + semun.buf = &semid_ds; + + ret = semctl(semid, 0, IPC_STAT, semun); + if (ret == -1) + return get_errno(ret); + + nsems = semid_ds.sem_nsems; + + *host_array = malloc(nsems*sizeof(unsigned short)); + if (!*host_array) { + return -TARGET_ENOMEM; + } + array = lock_user(VERIFY_READ, target_addr, + nsems*sizeof(unsigned short), 1); + if (!array) { + free(*host_array); + return -TARGET_EFAULT; + } + + for(i=0; i<nsems; i++) { + __get_user((*host_array)[i], &array[i]); + } + unlock_user(array, target_addr, 0); + + return 0; +} + +static inline abi_long host_to_target_semarray(int semid, abi_ulong target_addr, + unsigned short **host_array) +{ + int nsems; + unsigned short *array; + union semun semun; + struct semid_ds semid_ds; + int i, ret; + + semun.buf = &semid_ds; + + ret = semctl(semid, 0, IPC_STAT, semun); + if (ret == -1) + return get_errno(ret); + + nsems = semid_ds.sem_nsems; + + array = lock_user(VERIFY_WRITE, target_addr, + nsems*sizeof(unsigned short), 0); + if (!array) + return -TARGET_EFAULT; + + for(i=0; i<nsems; i++) { + __put_user((*host_array)[i], &array[i]); + } + free(*host_array); + unlock_user(array, target_addr, 1); + + return 0; +} + +static inline abi_long do_semctl(int semid, int semnum, int cmd, + union target_semun target_su) +{ + union semun arg; + struct semid_ds dsarg; + unsigned short *array = NULL; + struct seminfo seminfo; + abi_long ret = -TARGET_EINVAL; + abi_long err; + cmd &= 0xff; + + switch( cmd ) { + case GETVAL: + case SETVAL: + /* In 64 bit cross-endian situations, we will erroneously pick up + * the wrong half of the union for the "val" element. To rectify + * this, the entire 8-byte structure is byteswapped, followed by + * a swap of the 4 byte val field. In other cases, the data is + * already in proper host byte order. */ + if (sizeof(target_su.val) != (sizeof(target_su.buf))) { + target_su.buf = tswapal(target_su.buf); + arg.val = tswap32(target_su.val); + } else { + arg.val = target_su.val; + } + ret = get_errno(semctl(semid, semnum, cmd, arg)); + break; + case GETALL: + case SETALL: + err = target_to_host_semarray(semid, &array, target_su.array); + if (err) + return err; + arg.array = array; + ret = get_errno(semctl(semid, semnum, cmd, arg)); + err = host_to_target_semarray(semid, target_su.array, &array); + if (err) + return err; + break; + case IPC_STAT: + case IPC_SET: + case SEM_STAT: + err = target_to_host_semid_ds(&dsarg, target_su.buf); + if (err) + return err; + arg.buf = &dsarg; + ret = get_errno(semctl(semid, semnum, cmd, arg)); + err = host_to_target_semid_ds(target_su.buf, &dsarg); + if (err) + return err; + break; + case IPC_INFO: + case SEM_INFO: + arg.__buf = &seminfo; + ret = get_errno(semctl(semid, semnum, cmd, arg)); + err = host_to_target_seminfo(target_su.__buf, &seminfo); + if (err) + return err; + break; + case IPC_RMID: + case GETPID: + case GETNCNT: + case GETZCNT: + ret = get_errno(semctl(semid, semnum, cmd, NULL)); + break; + } + + return ret; +} + +struct target_sembuf { + unsigned short sem_num; + short sem_op; + short sem_flg; +}; + +static inline abi_long target_to_host_sembuf(struct sembuf *host_sembuf, + abi_ulong target_addr, + unsigned nsops) +{ + struct target_sembuf *target_sembuf; + int i; + + target_sembuf = lock_user(VERIFY_READ, target_addr, + nsops*sizeof(struct target_sembuf), 1); + if (!target_sembuf) + return -TARGET_EFAULT; + + for(i=0; i<nsops; i++) { + __get_user(host_sembuf[i].sem_num, &target_sembuf[i].sem_num); + __get_user(host_sembuf[i].sem_op, &target_sembuf[i].sem_op); + __get_user(host_sembuf[i].sem_flg, &target_sembuf[i].sem_flg); + } + + unlock_user(target_sembuf, target_addr, 0); + + return 0; +} + +static inline abi_long do_semop(int semid, abi_long ptr, unsigned nsops) +{ + struct sembuf sops[nsops]; + + if (target_to_host_sembuf(sops, ptr, nsops)) + return -TARGET_EFAULT; + + return get_errno(semop(semid, sops, nsops)); +} + +struct target_msqid_ds +{ + struct target_ipc_perm msg_perm; + abi_ulong msg_stime; +#if TARGET_ABI_BITS == 32 + abi_ulong __unused1; +#endif + abi_ulong msg_rtime; +#if TARGET_ABI_BITS == 32 + abi_ulong __unused2; +#endif + abi_ulong msg_ctime; +#if TARGET_ABI_BITS == 32 + abi_ulong __unused3; +#endif + abi_ulong __msg_cbytes; + abi_ulong msg_qnum; + abi_ulong msg_qbytes; + abi_ulong msg_lspid; + abi_ulong msg_lrpid; + abi_ulong __unused4; + abi_ulong __unused5; +}; + +static inline abi_long target_to_host_msqid_ds(struct msqid_ds *host_md, + abi_ulong target_addr) +{ + struct target_msqid_ds *target_md; + + if (!lock_user_struct(VERIFY_READ, target_md, target_addr, 1)) + return -TARGET_EFAULT; + if (target_to_host_ipc_perm(&(host_md->msg_perm),target_addr)) + return -TARGET_EFAULT; + host_md->msg_stime = tswapal(target_md->msg_stime); + host_md->msg_rtime = tswapal(target_md->msg_rtime); + host_md->msg_ctime = tswapal(target_md->msg_ctime); + host_md->__msg_cbytes = tswapal(target_md->__msg_cbytes); + host_md->msg_qnum = tswapal(target_md->msg_qnum); + host_md->msg_qbytes = tswapal(target_md->msg_qbytes); + host_md->msg_lspid = tswapal(target_md->msg_lspid); + host_md->msg_lrpid = tswapal(target_md->msg_lrpid); + unlock_user_struct(target_md, target_addr, 0); + return 0; +} + +static inline abi_long host_to_target_msqid_ds(abi_ulong target_addr, + struct msqid_ds *host_md) +{ + struct target_msqid_ds *target_md; + + if (!lock_user_struct(VERIFY_WRITE, target_md, target_addr, 0)) + return -TARGET_EFAULT; + if (host_to_target_ipc_perm(target_addr,&(host_md->msg_perm))) + return -TARGET_EFAULT; + target_md->msg_stime = tswapal(host_md->msg_stime); + target_md->msg_rtime = tswapal(host_md->msg_rtime); + target_md->msg_ctime = tswapal(host_md->msg_ctime); + target_md->__msg_cbytes = tswapal(host_md->__msg_cbytes); + target_md->msg_qnum = tswapal(host_md->msg_qnum); + target_md->msg_qbytes = tswapal(host_md->msg_qbytes); + target_md->msg_lspid = tswapal(host_md->msg_lspid); + target_md->msg_lrpid = tswapal(host_md->msg_lrpid); + unlock_user_struct(target_md, target_addr, 1); + return 0; +} + +struct target_msginfo { + int msgpool; + int msgmap; + int msgmax; + int msgmnb; + int msgmni; + int msgssz; + int msgtql; + unsigned short int msgseg; +}; + +static inline abi_long host_to_target_msginfo(abi_ulong target_addr, + struct msginfo *host_msginfo) +{ + struct target_msginfo *target_msginfo; + if (!lock_user_struct(VERIFY_WRITE, target_msginfo, target_addr, 0)) + return -TARGET_EFAULT; + __put_user(host_msginfo->msgpool, &target_msginfo->msgpool); + __put_user(host_msginfo->msgmap, &target_msginfo->msgmap); + __put_user(host_msginfo->msgmax, &target_msginfo->msgmax); + __put_user(host_msginfo->msgmnb, &target_msginfo->msgmnb); + __put_user(host_msginfo->msgmni, &target_msginfo->msgmni); + __put_user(host_msginfo->msgssz, &target_msginfo->msgssz); + __put_user(host_msginfo->msgtql, &target_msginfo->msgtql); + __put_user(host_msginfo->msgseg, &target_msginfo->msgseg); + unlock_user_struct(target_msginfo, target_addr, 1); + return 0; +} + +static inline abi_long do_msgctl(int msgid, int cmd, abi_long ptr) +{ + struct msqid_ds dsarg; + struct msginfo msginfo; + abi_long ret = -TARGET_EINVAL; + + cmd &= 0xff; + + switch (cmd) { + case IPC_STAT: + case IPC_SET: + case MSG_STAT: + if (target_to_host_msqid_ds(&dsarg,ptr)) + return -TARGET_EFAULT; + ret = get_errno(msgctl(msgid, cmd, &dsarg)); + if (host_to_target_msqid_ds(ptr,&dsarg)) + return -TARGET_EFAULT; + break; + case IPC_RMID: + ret = get_errno(msgctl(msgid, cmd, NULL)); + break; + case IPC_INFO: + case MSG_INFO: + ret = get_errno(msgctl(msgid, cmd, (struct msqid_ds *)&msginfo)); + if (host_to_target_msginfo(ptr, &msginfo)) + return -TARGET_EFAULT; + break; + } + + return ret; +} + +struct target_msgbuf { + abi_long mtype; + char mtext[1]; +}; + +static inline abi_long do_msgsnd(int msqid, abi_long msgp, + ssize_t msgsz, int msgflg) +{ + struct target_msgbuf *target_mb; + struct msgbuf *host_mb; + abi_long ret = 0; + + if (msgsz < 0) { + return -TARGET_EINVAL; + } + + if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) + return -TARGET_EFAULT; + host_mb = malloc(msgsz+sizeof(long)); + if (!host_mb) { + unlock_user_struct(target_mb, msgp, 0); + return -TARGET_ENOMEM; + } + host_mb->mtype = (abi_long) tswapal(target_mb->mtype); + memcpy(host_mb->mtext, target_mb->mtext, msgsz); + ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg)); + free(host_mb); + unlock_user_struct(target_mb, msgp, 0); + + return ret; +} + +static inline abi_long do_msgrcv(int msqid, abi_long msgp, + unsigned int msgsz, abi_long msgtyp, + int msgflg) +{ + struct target_msgbuf *target_mb; + char *target_mtext; + struct msgbuf *host_mb; + abi_long ret = 0; + + if (!lock_user_struct(VERIFY_WRITE, target_mb, msgp, 0)) + return -TARGET_EFAULT; + + host_mb = g_malloc(msgsz+sizeof(long)); + ret = get_errno(msgrcv(msqid, host_mb, msgsz, msgtyp, msgflg)); + + if (ret > 0) { + abi_ulong target_mtext_addr = msgp + sizeof(abi_ulong); + target_mtext = lock_user(VERIFY_WRITE, target_mtext_addr, ret, 0); + if (!target_mtext) { + ret = -TARGET_EFAULT; + goto end; + } + memcpy(target_mb->mtext, host_mb->mtext, ret); + unlock_user(target_mtext, target_mtext_addr, ret); + } + + target_mb->mtype = tswapal(host_mb->mtype); + +end: + if (target_mb) + unlock_user_struct(target_mb, msgp, 1); + g_free(host_mb); + return ret; +} + +static inline abi_long target_to_host_shmid_ds(struct shmid_ds *host_sd, + abi_ulong target_addr) +{ + struct target_shmid_ds *target_sd; + + if (!lock_user_struct(VERIFY_READ, target_sd, target_addr, 1)) + return -TARGET_EFAULT; + if (target_to_host_ipc_perm(&(host_sd->shm_perm), target_addr)) + return -TARGET_EFAULT; + __get_user(host_sd->shm_segsz, &target_sd->shm_segsz); + __get_user(host_sd->shm_atime, &target_sd->shm_atime); + __get_user(host_sd->shm_dtime, &target_sd->shm_dtime); + __get_user(host_sd->shm_ctime, &target_sd->shm_ctime); + __get_user(host_sd->shm_cpid, &target_sd->shm_cpid); + __get_user(host_sd->shm_lpid, &target_sd->shm_lpid); + __get_user(host_sd->shm_nattch, &target_sd->shm_nattch); + unlock_user_struct(target_sd, target_addr, 0); + return 0; +} + +static inline abi_long host_to_target_shmid_ds(abi_ulong target_addr, + struct shmid_ds *host_sd) +{ + struct target_shmid_ds *target_sd; + + if (!lock_user_struct(VERIFY_WRITE, target_sd, target_addr, 0)) + return -TARGET_EFAULT; + if (host_to_target_ipc_perm(target_addr, &(host_sd->shm_perm))) + return -TARGET_EFAULT; + __put_user(host_sd->shm_segsz, &target_sd->shm_segsz); + __put_user(host_sd->shm_atime, &target_sd->shm_atime); + __put_user(host_sd->shm_dtime, &target_sd->shm_dtime); + __put_user(host_sd->shm_ctime, &target_sd->shm_ctime); + __put_user(host_sd->shm_cpid, &target_sd->shm_cpid); + __put_user(host_sd->shm_lpid, &target_sd->shm_lpid); + __put_user(host_sd->shm_nattch, &target_sd->shm_nattch); + unlock_user_struct(target_sd, target_addr, 1); + return 0; +} + +struct target_shminfo { + abi_ulong shmmax; + abi_ulong shmmin; + abi_ulong shmmni; + abi_ulong shmseg; + abi_ulong shmall; +}; + +static inline abi_long host_to_target_shminfo(abi_ulong target_addr, + struct shminfo *host_shminfo) +{ + struct target_shminfo *target_shminfo; + if (!lock_user_struct(VERIFY_WRITE, target_shminfo, target_addr, 0)) + return -TARGET_EFAULT; + __put_user(host_shminfo->shmmax, &target_shminfo->shmmax); + __put_user(host_shminfo->shmmin, &target_shminfo->shmmin); + __put_user(host_shminfo->shmmni, &target_shminfo->shmmni); + __put_user(host_shminfo->shmseg, &target_shminfo->shmseg); + __put_user(host_shminfo->shmall, &target_shminfo->shmall); + unlock_user_struct(target_shminfo, target_addr, 1); + return 0; +} + +struct target_shm_info { + int used_ids; + abi_ulong shm_tot; + abi_ulong shm_rss; + abi_ulong shm_swp; + abi_ulong swap_attempts; + abi_ulong swap_successes; +}; + +static inline abi_long host_to_target_shm_info(abi_ulong target_addr, + struct shm_info *host_shm_info) +{ + struct target_shm_info *target_shm_info; + if (!lock_user_struct(VERIFY_WRITE, target_shm_info, target_addr, 0)) + return -TARGET_EFAULT; + __put_user(host_shm_info->used_ids, &target_shm_info->used_ids); + __put_user(host_shm_info->shm_tot, &target_shm_info->shm_tot); + __put_user(host_shm_info->shm_rss, &target_shm_info->shm_rss); + __put_user(host_shm_info->shm_swp, &target_shm_info->shm_swp); + __put_user(host_shm_info->swap_attempts, &target_shm_info->swap_attempts); + __put_user(host_shm_info->swap_successes, &target_shm_info->swap_successes); + unlock_user_struct(target_shm_info, target_addr, 1); + return 0; +} + +static inline abi_long do_shmctl(int shmid, int cmd, abi_long buf) +{ + struct shmid_ds dsarg; + struct shminfo shminfo; + struct shm_info shm_info; + abi_long ret = -TARGET_EINVAL; + + cmd &= 0xff; + + switch(cmd) { + case IPC_STAT: + case IPC_SET: + case SHM_STAT: + if (target_to_host_shmid_ds(&dsarg, buf)) + return -TARGET_EFAULT; + ret = get_errno(shmctl(shmid, cmd, &dsarg)); + if (host_to_target_shmid_ds(buf, &dsarg)) + return -TARGET_EFAULT; + break; + case IPC_INFO: + ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shminfo)); + if (host_to_target_shminfo(buf, &shminfo)) + return -TARGET_EFAULT; + break; + case SHM_INFO: + ret = get_errno(shmctl(shmid, cmd, (struct shmid_ds *)&shm_info)); + if (host_to_target_shm_info(buf, &shm_info)) + return -TARGET_EFAULT; + break; + case IPC_RMID: + case SHM_LOCK: + case SHM_UNLOCK: + ret = get_errno(shmctl(shmid, cmd, NULL)); + break; + } + + return ret; +} + +static inline abi_ulong do_shmat(int shmid, abi_ulong shmaddr, int shmflg) +{ + abi_long raddr; + void *host_raddr; + struct shmid_ds shm_info; + int i,ret; + + /* find out the length of the shared memory segment */ + ret = get_errno(shmctl(shmid, IPC_STAT, &shm_info)); + if (is_error(ret)) { + /* can't get length, bail out */ + return ret; + } + + mmap_lock(); + + if (shmaddr) + host_raddr = shmat(shmid, (void *)g2h(shmaddr), shmflg); + else { + abi_ulong mmap_start; + + mmap_start = mmap_find_vma(0, shm_info.shm_segsz); + + if (mmap_start == -1) { + errno = ENOMEM; + host_raddr = (void *)-1; + } else + host_raddr = shmat(shmid, g2h(mmap_start), shmflg | SHM_REMAP); + } + + if (host_raddr == (void *)-1) { + mmap_unlock(); + return get_errno((long)host_raddr); + } + raddr=h2g((unsigned long)host_raddr); + + page_set_flags(raddr, raddr + shm_info.shm_segsz, + PAGE_VALID | PAGE_READ | + ((shmflg & SHM_RDONLY)? 0 : PAGE_WRITE)); + + for (i = 0; i < N_SHM_REGIONS; i++) { + if (shm_regions[i].start == 0) { + shm_regions[i].start = raddr; + shm_regions[i].size = shm_info.shm_segsz; + break; + } + } + + mmap_unlock(); + return raddr; + +} + +static inline abi_long do_shmdt(abi_ulong shmaddr) +{ + int i; + + for (i = 0; i < N_SHM_REGIONS; ++i) { + if (shm_regions[i].start == shmaddr) { + shm_regions[i].start = 0; + page_set_flags(shmaddr, shmaddr + shm_regions[i].size, 0); + break; + } + } + + return get_errno(shmdt(g2h(shmaddr))); +} + +#ifdef TARGET_NR_ipc +/* ??? This only works with linear mappings. */ +/* do_ipc() must return target values and target errnos. */ +static abi_long do_ipc(unsigned int call, abi_long first, + abi_long second, abi_long third, + abi_long ptr, abi_long fifth) +{ + int version; + abi_long ret = 0; + + version = call >> 16; + call &= 0xffff; + + switch (call) { + case IPCOP_semop: + ret = do_semop(first, ptr, second); + break; + + case IPCOP_semget: + ret = get_errno(semget(first, second, third)); + break; + + case IPCOP_semctl: { + /* The semun argument to semctl is passed by value, so dereference the + * ptr argument. */ + abi_ulong atptr; + get_user_ual(atptr, ptr); + ret = do_semctl(first, second, third, + (union target_semun) atptr); + break; + } + + case IPCOP_msgget: + ret = get_errno(msgget(first, second)); + break; + + case IPCOP_msgsnd: + ret = do_msgsnd(first, ptr, second, third); + break; + + case IPCOP_msgctl: + ret = do_msgctl(first, second, ptr); + break; + + case IPCOP_msgrcv: + switch (version) { + case 0: + { + struct target_ipc_kludge { + abi_long msgp; + abi_long msgtyp; + } *tmp; + + if (!lock_user_struct(VERIFY_READ, tmp, ptr, 1)) { + ret = -TARGET_EFAULT; + break; + } + + ret = do_msgrcv(first, tswapal(tmp->msgp), second, tswapal(tmp->msgtyp), third); + + unlock_user_struct(tmp, ptr, 0); + break; + } + default: + ret = do_msgrcv(first, ptr, second, fifth, third); + } + break; + + case IPCOP_shmat: + switch (version) { + default: + { + abi_ulong raddr; + raddr = do_shmat(first, ptr, second); + if (is_error(raddr)) + return get_errno(raddr); + if (put_user_ual(raddr, third)) + return -TARGET_EFAULT; + break; + } + case 1: + ret = -TARGET_EINVAL; + break; + } + break; + case IPCOP_shmdt: + ret = do_shmdt(ptr); + break; + + case IPCOP_shmget: + /* IPC_* flag values are the same on all linux platforms */ + ret = get_errno(shmget(first, second, third)); + break; + + /* IPC_* and SHM_* command values are the same on all linux platforms */ + case IPCOP_shmctl: + ret = do_shmctl(first, second, ptr); + break; + default: + gemu_log("Unsupported ipc call: %d (version %d)\n", call, version); + ret = -TARGET_ENOSYS; + break; + } + return ret; +} +#endif + +/* kernel structure types definitions */ + +#define STRUCT(name, ...) STRUCT_ ## name, +#define STRUCT_SPECIAL(name) STRUCT_ ## name, +enum { +#include "syscall_types.h" +STRUCT_MAX +}; +#undef STRUCT +#undef STRUCT_SPECIAL + +#define STRUCT(name, ...) static const argtype struct_ ## name ## _def[] = { __VA_ARGS__, TYPE_NULL }; +#define STRUCT_SPECIAL(name) +#include "syscall_types.h" +#undef STRUCT +#undef STRUCT_SPECIAL + +typedef struct IOCTLEntry IOCTLEntry; + +typedef abi_long do_ioctl_fn(const IOCTLEntry *ie, uint8_t *buf_temp, + int fd, int cmd, abi_long arg); + +struct IOCTLEntry { + int target_cmd; + unsigned int host_cmd; + const char *name; + int access; + do_ioctl_fn *do_ioctl; + const argtype arg_type[5]; +}; + +#define IOC_R 0x0001 +#define IOC_W 0x0002 +#define IOC_RW (IOC_R | IOC_W) + +#define MAX_STRUCT_SIZE 4096 + +#ifdef CONFIG_FIEMAP +/* So fiemap access checks don't overflow on 32 bit systems. + * This is very slightly smaller than the limit imposed by + * the underlying kernel. + */ +#define FIEMAP_MAX_EXTENTS ((UINT_MAX - sizeof(struct fiemap)) \ + / sizeof(struct fiemap_extent)) + +static abi_long do_ioctl_fs_ioc_fiemap(const IOCTLEntry *ie, uint8_t *buf_temp, + int fd, int cmd, abi_long arg) +{ + /* The parameter for this ioctl is a struct fiemap followed + * by an array of struct fiemap_extent whose size is set + * in fiemap->fm_extent_count. The array is filled in by the + * ioctl. + */ + int target_size_in, target_size_out; + struct fiemap *fm; + const argtype *arg_type = ie->arg_type; + const argtype extent_arg_type[] = { MK_STRUCT(STRUCT_fiemap_extent) }; + void *argptr, *p; + abi_long ret; + int i, extent_size = thunk_type_size(extent_arg_type, 0); + uint32_t outbufsz; + int free_fm = 0; + + assert(arg_type[0] == TYPE_PTR); + assert(ie->access == IOC_RW); + arg_type++; + target_size_in = thunk_type_size(arg_type, 0); + argptr = lock_user(VERIFY_READ, arg, target_size_in, 1); + if (!argptr) { + return -TARGET_EFAULT; + } + thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); + unlock_user(argptr, arg, 0); + fm = (struct fiemap *)buf_temp; + if (fm->fm_extent_count > FIEMAP_MAX_EXTENTS) { + return -TARGET_EINVAL; + } + + outbufsz = sizeof (*fm) + + (sizeof(struct fiemap_extent) * fm->fm_extent_count); + + if (outbufsz > MAX_STRUCT_SIZE) { + /* We can't fit all the extents into the fixed size buffer. + * Allocate one that is large enough and use it instead. + */ + fm = malloc(outbufsz); + if (!fm) { + return -TARGET_ENOMEM; + } + memcpy(fm, buf_temp, sizeof(struct fiemap)); + free_fm = 1; + } + ret = get_errno(ioctl(fd, ie->host_cmd, fm)); + if (!is_error(ret)) { + target_size_out = target_size_in; + /* An extent_count of 0 means we were only counting the extents + * so there are no structs to copy + */ + if (fm->fm_extent_count != 0) { + target_size_out += fm->fm_mapped_extents * extent_size; + } + argptr = lock_user(VERIFY_WRITE, arg, target_size_out, 0); + if (!argptr) { + ret = -TARGET_EFAULT; + } else { + /* Convert the struct fiemap */ + thunk_convert(argptr, fm, arg_type, THUNK_TARGET); + if (fm->fm_extent_count != 0) { + p = argptr + target_size_in; + /* ...and then all the struct fiemap_extents */ + for (i = 0; i < fm->fm_mapped_extents; i++) { + thunk_convert(p, &fm->fm_extents[i], extent_arg_type, + THUNK_TARGET); + p += extent_size; + } + } + unlock_user(argptr, arg, target_size_out); + } + } + if (free_fm) { + free(fm); + } + return ret; +} +#endif + +static abi_long do_ioctl_ifconf(const IOCTLEntry *ie, uint8_t *buf_temp, + int fd, int cmd, abi_long arg) +{ + const argtype *arg_type = ie->arg_type; + int target_size; + void *argptr; + int ret; + struct ifconf *host_ifconf; + uint32_t outbufsz; + const argtype ifreq_arg_type[] = { MK_STRUCT(STRUCT_sockaddr_ifreq) }; + int target_ifreq_size; + int nb_ifreq; + int free_buf = 0; + int i; + int target_ifc_len; + abi_long target_ifc_buf; + int host_ifc_len; + char *host_ifc_buf; + + assert(arg_type[0] == TYPE_PTR); + assert(ie->access == IOC_RW); + + arg_type++; + target_size = thunk_type_size(arg_type, 0); + + argptr = lock_user(VERIFY_READ, arg, target_size, 1); + if (!argptr) + return -TARGET_EFAULT; + thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); + unlock_user(argptr, arg, 0); + + host_ifconf = (struct ifconf *)(unsigned long)buf_temp; + target_ifc_len = host_ifconf->ifc_len; + target_ifc_buf = (abi_long)(unsigned long)host_ifconf->ifc_buf; + + target_ifreq_size = thunk_type_size(ifreq_arg_type, 0); + nb_ifreq = target_ifc_len / target_ifreq_size; + host_ifc_len = nb_ifreq * sizeof(struct ifreq); + + outbufsz = sizeof(*host_ifconf) + host_ifc_len; + if (outbufsz > MAX_STRUCT_SIZE) { + /* We can't fit all the extents into the fixed size buffer. + * Allocate one that is large enough and use it instead. + */ + host_ifconf = malloc(outbufsz); + if (!host_ifconf) { + return -TARGET_ENOMEM; + } + memcpy(host_ifconf, buf_temp, sizeof(*host_ifconf)); + free_buf = 1; + } + host_ifc_buf = (char*)host_ifconf + sizeof(*host_ifconf); + + host_ifconf->ifc_len = host_ifc_len; + host_ifconf->ifc_buf = host_ifc_buf; + + ret = get_errno(ioctl(fd, ie->host_cmd, host_ifconf)); + if (!is_error(ret)) { + /* convert host ifc_len to target ifc_len */ + + nb_ifreq = host_ifconf->ifc_len / sizeof(struct ifreq); + target_ifc_len = nb_ifreq * target_ifreq_size; + host_ifconf->ifc_len = target_ifc_len; + + /* restore target ifc_buf */ + + host_ifconf->ifc_buf = (char *)(unsigned long)target_ifc_buf; + + /* copy struct ifconf to target user */ + + argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); + if (!argptr) + return -TARGET_EFAULT; + thunk_convert(argptr, host_ifconf, arg_type, THUNK_TARGET); + unlock_user(argptr, arg, target_size); + + /* copy ifreq[] to target user */ + + argptr = lock_user(VERIFY_WRITE, target_ifc_buf, target_ifc_len, 0); + for (i = 0; i < nb_ifreq ; i++) { + thunk_convert(argptr + i * target_ifreq_size, + host_ifc_buf + i * sizeof(struct ifreq), + ifreq_arg_type, THUNK_TARGET); + } + unlock_user(argptr, target_ifc_buf, target_ifc_len); + } + + if (free_buf) { + free(host_ifconf); + } + + return ret; +} + +static abi_long do_ioctl_dm(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, + int cmd, abi_long arg) +{ + void *argptr; + struct dm_ioctl *host_dm; + abi_long guest_data; + uint32_t guest_data_size; + int target_size; + const argtype *arg_type = ie->arg_type; + abi_long ret; + void *big_buf = NULL; + char *host_data; + + arg_type++; + target_size = thunk_type_size(arg_type, 0); + argptr = lock_user(VERIFY_READ, arg, target_size, 1); + if (!argptr) { + ret = -TARGET_EFAULT; + goto out; + } + thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); + unlock_user(argptr, arg, 0); + + /* buf_temp is too small, so fetch things into a bigger buffer */ + big_buf = g_malloc0(((struct dm_ioctl*)buf_temp)->data_size * 2); + memcpy(big_buf, buf_temp, target_size); + buf_temp = big_buf; + host_dm = big_buf; + + guest_data = arg + host_dm->data_start; + if ((guest_data - arg) < 0) { + ret = -EINVAL; + goto out; + } + guest_data_size = host_dm->data_size - host_dm->data_start; + host_data = (char*)host_dm + host_dm->data_start; + + argptr = lock_user(VERIFY_READ, guest_data, guest_data_size, 1); + switch (ie->host_cmd) { + case DM_REMOVE_ALL: + case DM_LIST_DEVICES: + case DM_DEV_CREATE: + case DM_DEV_REMOVE: + case DM_DEV_SUSPEND: + case DM_DEV_STATUS: + case DM_DEV_WAIT: + case DM_TABLE_STATUS: + case DM_TABLE_CLEAR: + case DM_TABLE_DEPS: + case DM_LIST_VERSIONS: + /* no input data */ + break; + case DM_DEV_RENAME: + case DM_DEV_SET_GEOMETRY: + /* data contains only strings */ + memcpy(host_data, argptr, guest_data_size); + break; + case DM_TARGET_MSG: + memcpy(host_data, argptr, guest_data_size); + *(uint64_t*)host_data = tswap64(*(uint64_t*)argptr); + break; + case DM_TABLE_LOAD: + { + void *gspec = argptr; + void *cur_data = host_data; + const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; + int spec_size = thunk_type_size(arg_type, 0); + int i; + + for (i = 0; i < host_dm->target_count; i++) { + struct dm_target_spec *spec = cur_data; + uint32_t next; + int slen; + + thunk_convert(spec, gspec, arg_type, THUNK_HOST); + slen = strlen((char*)gspec + spec_size) + 1; + next = spec->next; + spec->next = sizeof(*spec) + slen; + strcpy((char*)&spec[1], gspec + spec_size); + gspec += next; + cur_data += spec->next; + } + break; + } + default: + ret = -TARGET_EINVAL; + unlock_user(argptr, guest_data, 0); + goto out; + } + unlock_user(argptr, guest_data, 0); + + ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + if (!is_error(ret)) { + guest_data = arg + host_dm->data_start; + guest_data_size = host_dm->data_size - host_dm->data_start; + argptr = lock_user(VERIFY_WRITE, guest_data, guest_data_size, 0); + switch (ie->host_cmd) { + case DM_REMOVE_ALL: + case DM_DEV_CREATE: + case DM_DEV_REMOVE: + case DM_DEV_RENAME: + case DM_DEV_SUSPEND: + case DM_DEV_STATUS: + case DM_TABLE_LOAD: + case DM_TABLE_CLEAR: + case DM_TARGET_MSG: + case DM_DEV_SET_GEOMETRY: + /* no return data */ + break; + case DM_LIST_DEVICES: + { + struct dm_name_list *nl = (void*)host_dm + host_dm->data_start; + uint32_t remaining_data = guest_data_size; + void *cur_data = argptr; + const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_name_list) }; + int nl_size = 12; /* can't use thunk_size due to alignment */ + + while (1) { + uint32_t next = nl->next; + if (next) { + nl->next = nl_size + (strlen(nl->name) + 1); + } + if (remaining_data < nl->next) { + host_dm->flags |= DM_BUFFER_FULL_FLAG; + break; + } + thunk_convert(cur_data, nl, arg_type, THUNK_TARGET); + strcpy(cur_data + nl_size, nl->name); + cur_data += nl->next; + remaining_data -= nl->next; + if (!next) { + break; + } + nl = (void*)nl + next; + } + break; + } + case DM_DEV_WAIT: + case DM_TABLE_STATUS: + { + struct dm_target_spec *spec = (void*)host_dm + host_dm->data_start; + void *cur_data = argptr; + const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_spec) }; + int spec_size = thunk_type_size(arg_type, 0); + int i; + + for (i = 0; i < host_dm->target_count; i++) { + uint32_t next = spec->next; + int slen = strlen((char*)&spec[1]) + 1; + spec->next = (cur_data - argptr) + spec_size + slen; + if (guest_data_size < spec->next) { + host_dm->flags |= DM_BUFFER_FULL_FLAG; + break; + } + thunk_convert(cur_data, spec, arg_type, THUNK_TARGET); + strcpy(cur_data + spec_size, (char*)&spec[1]); + cur_data = argptr + spec->next; + spec = (void*)host_dm + host_dm->data_start + next; + } + break; + } + case DM_TABLE_DEPS: + { + void *hdata = (void*)host_dm + host_dm->data_start; + int count = *(uint32_t*)hdata; + uint64_t *hdev = hdata + 8; + uint64_t *gdev = argptr + 8; + int i; + + *(uint32_t*)argptr = tswap32(count); + for (i = 0; i < count; i++) { + *gdev = tswap64(*hdev); + gdev++; + hdev++; + } + break; + } + case DM_LIST_VERSIONS: + { + struct dm_target_versions *vers = (void*)host_dm + host_dm->data_start; + uint32_t remaining_data = guest_data_size; + void *cur_data = argptr; + const argtype arg_type[] = { MK_STRUCT(STRUCT_dm_target_versions) }; + int vers_size = thunk_type_size(arg_type, 0); + + while (1) { + uint32_t next = vers->next; + if (next) { + vers->next = vers_size + (strlen(vers->name) + 1); + } + if (remaining_data < vers->next) { + host_dm->flags |= DM_BUFFER_FULL_FLAG; + break; + } + thunk_convert(cur_data, vers, arg_type, THUNK_TARGET); + strcpy(cur_data + vers_size, vers->name); + cur_data += vers->next; + remaining_data -= vers->next; + if (!next) { + break; + } + vers = (void*)vers + next; + } + break; + } + default: + unlock_user(argptr, guest_data, 0); + ret = -TARGET_EINVAL; + goto out; + } + unlock_user(argptr, guest_data, guest_data_size); + + argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); + if (!argptr) { + ret = -TARGET_EFAULT; + goto out; + } + thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); + unlock_user(argptr, arg, target_size); + } +out: + g_free(big_buf); + return ret; +} + +static abi_long do_ioctl_blkpg(const IOCTLEntry *ie, uint8_t *buf_temp, int fd, + int cmd, abi_long arg) +{ + void *argptr; + int target_size; + const argtype *arg_type = ie->arg_type; + const argtype part_arg_type[] = { MK_STRUCT(STRUCT_blkpg_partition) }; + abi_long ret; + + struct blkpg_ioctl_arg *host_blkpg = (void*)buf_temp; + struct blkpg_partition host_part; + + /* Read and convert blkpg */ + arg_type++; + target_size = thunk_type_size(arg_type, 0); + argptr = lock_user(VERIFY_READ, arg, target_size, 1); + if (!argptr) { + ret = -TARGET_EFAULT; + goto out; + } + thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); + unlock_user(argptr, arg, 0); + + switch (host_blkpg->op) { + case BLKPG_ADD_PARTITION: + case BLKPG_DEL_PARTITION: + /* payload is struct blkpg_partition */ + break; + default: + /* Unknown opcode */ + ret = -TARGET_EINVAL; + goto out; + } + + /* Read and convert blkpg->data */ + arg = (abi_long)(uintptr_t)host_blkpg->data; + target_size = thunk_type_size(part_arg_type, 0); + argptr = lock_user(VERIFY_READ, arg, target_size, 1); + if (!argptr) { + ret = -TARGET_EFAULT; + goto out; + } + thunk_convert(&host_part, argptr, part_arg_type, THUNK_HOST); + unlock_user(argptr, arg, 0); + + /* Swizzle the data pointer to our local copy and call! */ + host_blkpg->data = &host_part; + ret = get_errno(ioctl(fd, ie->host_cmd, host_blkpg)); + +out: + return ret; +} + +static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t *buf_temp, + int fd, int cmd, abi_long arg) +{ + const argtype *arg_type = ie->arg_type; + const StructEntry *se; + const argtype *field_types; + const int *dst_offsets, *src_offsets; + int target_size; + void *argptr; + abi_ulong *target_rt_dev_ptr; + unsigned long *host_rt_dev_ptr; + abi_long ret; + int i; + + assert(ie->access == IOC_W); + assert(*arg_type == TYPE_PTR); + arg_type++; + assert(*arg_type == TYPE_STRUCT); + target_size = thunk_type_size(arg_type, 0); + argptr = lock_user(VERIFY_READ, arg, target_size, 1); + if (!argptr) { + return -TARGET_EFAULT; + } + arg_type++; + assert(*arg_type == (int)STRUCT_rtentry); + se = struct_entries + *arg_type++; + assert(se->convert[0] == NULL); + /* convert struct here to be able to catch rt_dev string */ + field_types = se->field_types; + dst_offsets = se->field_offsets[THUNK_HOST]; + src_offsets = se->field_offsets[THUNK_TARGET]; + for (i = 0; i < se->nb_fields; i++) { + if (dst_offsets[i] == offsetof(struct rtentry, rt_dev)) { + assert(*field_types == TYPE_PTRVOID); + target_rt_dev_ptr = (abi_ulong *)(argptr + src_offsets[i]); + host_rt_dev_ptr = (unsigned long *)(buf_temp + dst_offsets[i]); + if (*target_rt_dev_ptr != 0) { + *host_rt_dev_ptr = (unsigned long)lock_user_string( + tswapal(*target_rt_dev_ptr)); + if (!*host_rt_dev_ptr) { + unlock_user(argptr, arg, 0); + return -TARGET_EFAULT; + } + } else { + *host_rt_dev_ptr = 0; + } + field_types++; + continue; + } + field_types = thunk_convert(buf_temp + dst_offsets[i], + argptr + src_offsets[i], + field_types, THUNK_HOST); + } + unlock_user(argptr, arg, 0); + + ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + if (*host_rt_dev_ptr != 0) { + unlock_user((void *)*host_rt_dev_ptr, + *target_rt_dev_ptr, 0); + } + return ret; +} + +static abi_long do_ioctl_kdsigaccept(const IOCTLEntry *ie, uint8_t *buf_temp, + int fd, int cmd, abi_long arg) +{ + int sig = target_to_host_signal(arg); + return get_errno(ioctl(fd, ie->host_cmd, sig)); +} + +static IOCTLEntry ioctl_entries[] = { +#define IOCTL(cmd, access, ...) \ + { TARGET_ ## cmd, cmd, #cmd, access, 0, { __VA_ARGS__ } }, +#define IOCTL_SPECIAL(cmd, access, dofn, ...) \ + { TARGET_ ## cmd, cmd, #cmd, access, dofn, { __VA_ARGS__ } }, +#include "ioctls.h" + { 0, 0, }, +}; + +/* ??? Implement proper locking for ioctls. */ +/* do_ioctl() Must return target values and target errnos. */ +static abi_long do_ioctl(int fd, int cmd, abi_long arg) +{ + const IOCTLEntry *ie; + const argtype *arg_type; + abi_long ret; + uint8_t buf_temp[MAX_STRUCT_SIZE]; + int target_size; + void *argptr; + + ie = ioctl_entries; + for(;;) { + if (ie->target_cmd == 0) { + gemu_log("Unsupported ioctl: cmd=0x%04lx\n", (long)cmd); + return -TARGET_ENOSYS; + } + if (ie->target_cmd == cmd) + break; + ie++; + } + arg_type = ie->arg_type; +#if defined(DEBUG) + gemu_log("ioctl: cmd=0x%04lx (%s)\n", (long)cmd, ie->name); +#endif + if (ie->do_ioctl) { + return ie->do_ioctl(ie, buf_temp, fd, cmd, arg); + } + + switch(arg_type[0]) { + case TYPE_NULL: + /* no argument */ + ret = get_errno(ioctl(fd, ie->host_cmd)); + break; + case TYPE_PTRVOID: + case TYPE_INT: + /* int argment */ + ret = get_errno(ioctl(fd, ie->host_cmd, arg)); + break; + case TYPE_PTR: + arg_type++; + target_size = thunk_type_size(arg_type, 0); + switch(ie->access) { + case IOC_R: + ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + if (!is_error(ret)) { + argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); + if (!argptr) + return -TARGET_EFAULT; + thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); + unlock_user(argptr, arg, target_size); + } + break; + case IOC_W: + argptr = lock_user(VERIFY_READ, arg, target_size, 1); + if (!argptr) + return -TARGET_EFAULT; + thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); + unlock_user(argptr, arg, 0); + ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + break; + default: + case IOC_RW: + argptr = lock_user(VERIFY_READ, arg, target_size, 1); + if (!argptr) + return -TARGET_EFAULT; + thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST); + unlock_user(argptr, arg, 0); + ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp)); + if (!is_error(ret)) { + argptr = lock_user(VERIFY_WRITE, arg, target_size, 0); + if (!argptr) + return -TARGET_EFAULT; + thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET); + unlock_user(argptr, arg, target_size); + } + break; + } + break; + default: + gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", + (long)cmd, arg_type[0]); + ret = -TARGET_ENOSYS; + break; + } + return ret; +} + +static const bitmask_transtbl iflag_tbl[] = { + { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK }, + { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT }, + { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR }, + { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK }, + { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK }, + { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP }, + { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR }, + { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR }, + { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL }, + { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC }, + { TARGET_IXON, TARGET_IXON, IXON, IXON }, + { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY }, + { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF }, + { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL }, + { 0, 0, 0, 0 } +}; + +static const bitmask_transtbl oflag_tbl[] = { + { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST }, + { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC }, + { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR }, + { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL }, + { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR }, + { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET }, + { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL }, + { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL }, + { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 }, + { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 }, + { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 }, + { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 }, + { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 }, + { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 }, + { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 }, + { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 }, + { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 }, + { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 }, + { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 }, + { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 }, + { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 }, + { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 }, + { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 }, + { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 }, + { 0, 0, 0, 0 } +}; + +static const bitmask_transtbl cflag_tbl[] = { + { TARGET_CBAUD, TARGET_B0, CBAUD, B0 }, + { TARGET_CBAUD, TARGET_B50, CBAUD, B50 }, + { TARGET_CBAUD, TARGET_B75, CBAUD, B75 }, + { TARGET_CBAUD, TARGET_B110, CBAUD, B110 }, + { TARGET_CBAUD, TARGET_B134, CBAUD, B134 }, + { TARGET_CBAUD, TARGET_B150, CBAUD, B150 }, + { TARGET_CBAUD, TARGET_B200, CBAUD, B200 }, + { TARGET_CBAUD, TARGET_B300, CBAUD, B300 }, + { TARGET_CBAUD, TARGET_B600, CBAUD, B600 }, + { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 }, + { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 }, + { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 }, + { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 }, + { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 }, + { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 }, + { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 }, + { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 }, + { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 }, + { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 }, + { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 }, + { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 }, + { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 }, + { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 }, + { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 }, + { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB }, + { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD }, + { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB }, + { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD }, + { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL }, + { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL }, + { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS }, + { 0, 0, 0, 0 } +}; + +static const bitmask_transtbl lflag_tbl[] = { + { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG }, + { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON }, + { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE }, + { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO }, + { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE }, + { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK }, + { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL }, + { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH }, + { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP }, + { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL }, + { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT }, + { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE }, + { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO }, + { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN }, + { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN }, + { 0, 0, 0, 0 } +}; + +static void target_to_host_termios (void *dst, const void *src) +{ + struct host_termios *host = dst; + const struct target_termios *target = src; + + host->c_iflag = + target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl); + host->c_oflag = + target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl); + host->c_cflag = + target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl); + host->c_lflag = + target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl); + host->c_line = target->c_line; + + memset(host->c_cc, 0, sizeof(host->c_cc)); + host->c_cc[VINTR] = target->c_cc[TARGET_VINTR]; + host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT]; + host->c_cc[VERASE] = target->c_cc[TARGET_VERASE]; + host->c_cc[VKILL] = target->c_cc[TARGET_VKILL]; + host->c_cc[VEOF] = target->c_cc[TARGET_VEOF]; + host->c_cc[VTIME] = target->c_cc[TARGET_VTIME]; + host->c_cc[VMIN] = target->c_cc[TARGET_VMIN]; + host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC]; + host->c_cc[VSTART] = target->c_cc[TARGET_VSTART]; + host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP]; + host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP]; + host->c_cc[VEOL] = target->c_cc[TARGET_VEOL]; + host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT]; + host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD]; + host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE]; + host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT]; + host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2]; +} + +static void host_to_target_termios (void *dst, const void *src) +{ + struct target_termios *target = dst; + const struct host_termios *host = src; + + target->c_iflag = + tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl)); + target->c_oflag = + tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl)); + target->c_cflag = + tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl)); + target->c_lflag = + tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl)); + target->c_line = host->c_line; + + memset(target->c_cc, 0, sizeof(target->c_cc)); + target->c_cc[TARGET_VINTR] = host->c_cc[VINTR]; + target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT]; + target->c_cc[TARGET_VERASE] = host->c_cc[VERASE]; + target->c_cc[TARGET_VKILL] = host->c_cc[VKILL]; + target->c_cc[TARGET_VEOF] = host->c_cc[VEOF]; + target->c_cc[TARGET_VTIME] = host->c_cc[VTIME]; + target->c_cc[TARGET_VMIN] = host->c_cc[VMIN]; + target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC]; + target->c_cc[TARGET_VSTART] = host->c_cc[VSTART]; + target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP]; + target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP]; + target->c_cc[TARGET_VEOL] = host->c_cc[VEOL]; + target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT]; + target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD]; + target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE]; + target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT]; + target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2]; +} + +static const StructEntry struct_termios_def = { + .convert = { host_to_target_termios, target_to_host_termios }, + .size = { sizeof(struct target_termios), sizeof(struct host_termios) }, + .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) }, +}; + +static bitmask_transtbl mmap_flags_tbl[] = { + { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED }, + { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE }, + { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED }, + { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS }, + { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN }, + { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE }, + { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE }, + { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED }, + { TARGET_MAP_NORESERVE, TARGET_MAP_NORESERVE, MAP_NORESERVE, + MAP_NORESERVE }, + { 0, 0, 0, 0 } +}; + +#if defined(TARGET_I386) + +/* NOTE: there is really one LDT for all the threads */ +static uint8_t *ldt_table; + +static abi_long read_ldt(abi_ulong ptr, unsigned long bytecount) +{ + int size; + void *p; + + if (!ldt_table) + return 0; + size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE; + if (size > bytecount) + size = bytecount; + p = lock_user(VERIFY_WRITE, ptr, size, 0); + if (!p) + return -TARGET_EFAULT; + /* ??? Should this by byteswapped? */ + memcpy(p, ldt_table, size); + unlock_user(p, ptr, size); + return size; +} + +/* XXX: add locking support */ +static abi_long write_ldt(CPUX86State *env, + abi_ulong ptr, unsigned long bytecount, int oldmode) +{ + struct target_modify_ldt_ldt_s ldt_info; + struct target_modify_ldt_ldt_s *target_ldt_info; + int seg_32bit, contents, read_exec_only, limit_in_pages; + int seg_not_present, useable, lm; + uint32_t *lp, entry_1, entry_2; + + if (bytecount != sizeof(ldt_info)) + return -TARGET_EINVAL; + if (!lock_user_struct(VERIFY_READ, target_ldt_info, ptr, 1)) + return -TARGET_EFAULT; + ldt_info.entry_number = tswap32(target_ldt_info->entry_number); + ldt_info.base_addr = tswapal(target_ldt_info->base_addr); + ldt_info.limit = tswap32(target_ldt_info->limit); + ldt_info.flags = tswap32(target_ldt_info->flags); + unlock_user_struct(target_ldt_info, ptr, 0); + + if (ldt_info.entry_number >= TARGET_LDT_ENTRIES) + return -TARGET_EINVAL; + seg_32bit = ldt_info.flags & 1; + contents = (ldt_info.flags >> 1) & 3; + read_exec_only = (ldt_info.flags >> 3) & 1; + limit_in_pages = (ldt_info.flags >> 4) & 1; + seg_not_present = (ldt_info.flags >> 5) & 1; + useable = (ldt_info.flags >> 6) & 1; +#ifdef TARGET_ABI32 + lm = 0; +#else + lm = (ldt_info.flags >> 7) & 1; +#endif + if (contents == 3) { + if (oldmode) + return -TARGET_EINVAL; + if (seg_not_present == 0) + return -TARGET_EINVAL; + } + /* allocate the LDT */ + if (!ldt_table) { + env->ldt.base = target_mmap(0, + TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE, + PROT_READ|PROT_WRITE, + MAP_ANONYMOUS|MAP_PRIVATE, -1, 0); + if (env->ldt.base == -1) + return -TARGET_ENOMEM; + memset(g2h(env->ldt.base), 0, + TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE); + env->ldt.limit = 0xffff; + ldt_table = g2h(env->ldt.base); + } + + /* NOTE: same code as Linux kernel */ + /* Allow LDTs to be cleared by the user. */ + if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { + if (oldmode || + (contents == 0 && + read_exec_only == 1 && + seg_32bit == 0 && + limit_in_pages == 0 && + seg_not_present == 1 && + useable == 0 )) { + entry_1 = 0; + entry_2 = 0; + goto install; + } + } + + entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | + (ldt_info.limit & 0x0ffff); + entry_2 = (ldt_info.base_addr & 0xff000000) | + ((ldt_info.base_addr & 0x00ff0000) >> 16) | + (ldt_info.limit & 0xf0000) | + ((read_exec_only ^ 1) << 9) | + (contents << 10) | + ((seg_not_present ^ 1) << 15) | + (seg_32bit << 22) | + (limit_in_pages << 23) | + (lm << 21) | + 0x7000; + if (!oldmode) + entry_2 |= (useable << 20); + + /* Install the new entry ... */ +install: + lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3)); + lp[0] = tswap32(entry_1); + lp[1] = tswap32(entry_2); + return 0; +} + +/* specific and weird i386 syscalls */ +static abi_long do_modify_ldt(CPUX86State *env, int func, abi_ulong ptr, + unsigned long bytecount) +{ + abi_long ret; + + switch (func) { + case 0: + ret = read_ldt(ptr, bytecount); + break; + case 1: + ret = write_ldt(env, ptr, bytecount, 1); + break; + case 0x11: + ret = write_ldt(env, ptr, bytecount, 0); + break; + default: + ret = -TARGET_ENOSYS; + break; + } + return ret; +} + +#if defined(TARGET_I386) && defined(TARGET_ABI32) +abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr) +{ + uint64_t *gdt_table = g2h(env->gdt.base); + struct target_modify_ldt_ldt_s ldt_info; + struct target_modify_ldt_ldt_s *target_ldt_info; + int seg_32bit, contents, read_exec_only, limit_in_pages; + int seg_not_present, useable, lm; + uint32_t *lp, entry_1, entry_2; + int i; + + lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); + if (!target_ldt_info) + return -TARGET_EFAULT; + ldt_info.entry_number = tswap32(target_ldt_info->entry_number); + ldt_info.base_addr = tswapal(target_ldt_info->base_addr); + ldt_info.limit = tswap32(target_ldt_info->limit); + ldt_info.flags = tswap32(target_ldt_info->flags); + if (ldt_info.entry_number == -1) { + for (i=TARGET_GDT_ENTRY_TLS_MIN; i<=TARGET_GDT_ENTRY_TLS_MAX; i++) { + if (gdt_table[i] == 0) { + ldt_info.entry_number = i; + target_ldt_info->entry_number = tswap32(i); + break; + } + } + } + unlock_user_struct(target_ldt_info, ptr, 1); + + if (ldt_info.entry_number < TARGET_GDT_ENTRY_TLS_MIN || + ldt_info.entry_number > TARGET_GDT_ENTRY_TLS_MAX) + return -TARGET_EINVAL; + seg_32bit = ldt_info.flags & 1; + contents = (ldt_info.flags >> 1) & 3; + read_exec_only = (ldt_info.flags >> 3) & 1; + limit_in_pages = (ldt_info.flags >> 4) & 1; + seg_not_present = (ldt_info.flags >> 5) & 1; + useable = (ldt_info.flags >> 6) & 1; +#ifdef TARGET_ABI32 + lm = 0; +#else + lm = (ldt_info.flags >> 7) & 1; +#endif + + if (contents == 3) { + if (seg_not_present == 0) + return -TARGET_EINVAL; + } + + /* NOTE: same code as Linux kernel */ + /* Allow LDTs to be cleared by the user. */ + if (ldt_info.base_addr == 0 && ldt_info.limit == 0) { + if ((contents == 0 && + read_exec_only == 1 && + seg_32bit == 0 && + limit_in_pages == 0 && + seg_not_present == 1 && + useable == 0 )) { + entry_1 = 0; + entry_2 = 0; + goto install; + } + } + + entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) | + (ldt_info.limit & 0x0ffff); + entry_2 = (ldt_info.base_addr & 0xff000000) | + ((ldt_info.base_addr & 0x00ff0000) >> 16) | + (ldt_info.limit & 0xf0000) | + ((read_exec_only ^ 1) << 9) | + (contents << 10) | + ((seg_not_present ^ 1) << 15) | + (seg_32bit << 22) | + (limit_in_pages << 23) | + (useable << 20) | + (lm << 21) | + 0x7000; + + /* Install the new entry ... */ +install: + lp = (uint32_t *)(gdt_table + ldt_info.entry_number); + lp[0] = tswap32(entry_1); + lp[1] = tswap32(entry_2); + return 0; +} + +static abi_long do_get_thread_area(CPUX86State *env, abi_ulong ptr) +{ + struct target_modify_ldt_ldt_s *target_ldt_info; + uint64_t *gdt_table = g2h(env->gdt.base); + uint32_t base_addr, limit, flags; + int seg_32bit, contents, read_exec_only, limit_in_pages, idx; + int seg_not_present, useable, lm; + uint32_t *lp, entry_1, entry_2; + + lock_user_struct(VERIFY_WRITE, target_ldt_info, ptr, 1); + if (!target_ldt_info) + return -TARGET_EFAULT; + idx = tswap32(target_ldt_info->entry_number); + if (idx < TARGET_GDT_ENTRY_TLS_MIN || + idx > TARGET_GDT_ENTRY_TLS_MAX) { + unlock_user_struct(target_ldt_info, ptr, 1); + return -TARGET_EINVAL; + } + lp = (uint32_t *)(gdt_table + idx); + entry_1 = tswap32(lp[0]); + entry_2 = tswap32(lp[1]); + + read_exec_only = ((entry_2 >> 9) & 1) ^ 1; + contents = (entry_2 >> 10) & 3; + seg_not_present = ((entry_2 >> 15) & 1) ^ 1; + seg_32bit = (entry_2 >> 22) & 1; + limit_in_pages = (entry_2 >> 23) & 1; + useable = (entry_2 >> 20) & 1; +#ifdef TARGET_ABI32 + lm = 0; +#else + lm = (entry_2 >> 21) & 1; +#endif + flags = (seg_32bit << 0) | (contents << 1) | + (read_exec_only << 3) | (limit_in_pages << 4) | + (seg_not_present << 5) | (useable << 6) | (lm << 7); + limit = (entry_1 & 0xffff) | (entry_2 & 0xf0000); + base_addr = (entry_1 >> 16) | + (entry_2 & 0xff000000) | + ((entry_2 & 0xff) << 16); + target_ldt_info->base_addr = tswapal(base_addr); + target_ldt_info->limit = tswap32(limit); + target_ldt_info->flags = tswap32(flags); + unlock_user_struct(target_ldt_info, ptr, 1); + return 0; +} +#endif /* TARGET_I386 && TARGET_ABI32 */ + +#ifndef TARGET_ABI32 +abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr) +{ + abi_long ret = 0; + abi_ulong val; + int idx; + + switch(code) { + case TARGET_ARCH_SET_GS: + case TARGET_ARCH_SET_FS: + if (code == TARGET_ARCH_SET_GS) + idx = R_GS; + else + idx = R_FS; + cpu_x86_load_seg(env, idx, 0); + env->segs[idx].base = addr; + break; + case TARGET_ARCH_GET_GS: + case TARGET_ARCH_GET_FS: + if (code == TARGET_ARCH_GET_GS) + idx = R_GS; + else + idx = R_FS; + val = env->segs[idx].base; + if (put_user(val, addr, abi_ulong)) + ret = -TARGET_EFAULT; + break; + default: + ret = -TARGET_EINVAL; + break; + } + return ret; +} +#endif + +#endif /* defined(TARGET_I386) */ + +#define NEW_STACK_SIZE 0x40000 + + +static pthread_mutex_t clone_lock = PTHREAD_MUTEX_INITIALIZER; +typedef struct { + CPUArchState *env; + pthread_mutex_t mutex; + pthread_cond_t cond; + pthread_t thread; + uint32_t tid; + abi_ulong child_tidptr; + abi_ulong parent_tidptr; + sigset_t sigmask; +} new_thread_info; + +static void *clone_func(void *arg) +{ + new_thread_info *info = arg; + CPUArchState *env; + CPUState *cpu; + TaskState *ts; + + env = info->env; + cpu = ENV_GET_CPU(env); + thread_cpu = cpu; + ts = (TaskState *)cpu->opaque; + info->tid = gettid(); + cpu->host_tid = info->tid; + task_settid(ts); + if (info->child_tidptr) + put_user_u32(info->tid, info->child_tidptr); + if (info->parent_tidptr) + put_user_u32(info->tid, info->parent_tidptr); + /* Enable signals. */ + sigprocmask(SIG_SETMASK, &info->sigmask, NULL); + /* Signal to the parent that we're ready. */ + pthread_mutex_lock(&info->mutex); + pthread_cond_broadcast(&info->cond); + pthread_mutex_unlock(&info->mutex); + /* Wait until the parent has finshed initializing the tls state. */ + pthread_mutex_lock(&clone_lock); + pthread_mutex_unlock(&clone_lock); + cpu_loop(env); + /* never exits */ + return NULL; +} + +/* do_fork() Must return host values and target errnos (unlike most + do_*() functions). */ +static int do_fork(CPUArchState *env, unsigned int flags, abi_ulong newsp, + abi_ulong parent_tidptr, target_ulong newtls, + abi_ulong child_tidptr) +{ + CPUState *cpu = ENV_GET_CPU(env); + int ret; + TaskState *ts; + CPUState *new_cpu; + CPUArchState *new_env; + unsigned int nptl_flags; + sigset_t sigmask; + + /* Emulate vfork() with fork() */ + if (flags & CLONE_VFORK) + flags &= ~(CLONE_VFORK | CLONE_VM); + + if (flags & CLONE_VM) { + TaskState *parent_ts = (TaskState *)cpu->opaque; + new_thread_info info; + pthread_attr_t attr; + + ts = g_malloc0(sizeof(TaskState)); + init_task_state(ts); + /* we create a new CPU instance. */ + new_env = cpu_copy(env); + /* Init regs that differ from the parent. */ + cpu_clone_regs(new_env, newsp); + new_cpu = ENV_GET_CPU(new_env); + new_cpu->opaque = ts; + ts->bprm = parent_ts->bprm; + ts->info = parent_ts->info; + nptl_flags = flags; + flags &= ~CLONE_NPTL_FLAGS2; + + if (nptl_flags & CLONE_CHILD_CLEARTID) { + ts->child_tidptr = child_tidptr; + } + + if (nptl_flags & CLONE_SETTLS) + cpu_set_tls (new_env, newtls); + + /* Grab a mutex so that thread setup appears atomic. */ + pthread_mutex_lock(&clone_lock); + + memset(&info, 0, sizeof(info)); + pthread_mutex_init(&info.mutex, NULL); + pthread_mutex_lock(&info.mutex); + pthread_cond_init(&info.cond, NULL); + info.env = new_env; + if (nptl_flags & CLONE_CHILD_SETTID) + info.child_tidptr = child_tidptr; + if (nptl_flags & CLONE_PARENT_SETTID) + info.parent_tidptr = parent_tidptr; + + ret = pthread_attr_init(&attr); + ret = pthread_attr_setstacksize(&attr, NEW_STACK_SIZE); + ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); + /* It is not safe to deliver signals until the child has finished + initializing, so temporarily block all signals. */ + sigfillset(&sigmask); + sigprocmask(SIG_BLOCK, &sigmask, &info.sigmask); + + ret = pthread_create(&info.thread, &attr, clone_func, &info); + /* TODO: Free new CPU state if thread creation failed. */ + + sigprocmask(SIG_SETMASK, &info.sigmask, NULL); + pthread_attr_destroy(&attr); + if (ret == 0) { + /* Wait for the child to initialize. */ + pthread_cond_wait(&info.cond, &info.mutex); + ret = info.tid; + if (flags & CLONE_PARENT_SETTID) + put_user_u32(ret, parent_tidptr); + } else { + ret = -1; + } + pthread_mutex_unlock(&info.mutex); + pthread_cond_destroy(&info.cond); + pthread_mutex_destroy(&info.mutex); + pthread_mutex_unlock(&clone_lock); + } else { + /* if no CLONE_VM, we consider it is a fork */ + if ((flags & ~(CSIGNAL | CLONE_NPTL_FLAGS2)) != 0) + return -EINVAL; + fork_start(); + ret = fork(); + if (ret == 0) { + /* Child Process. */ + rcu_after_fork(); + cpu_clone_regs(env, newsp); + fork_end(1); + /* There is a race condition here. The parent process could + theoretically read the TID in the child process before the child + tid is set. This would require using either ptrace + (not implemented) or having *_tidptr to point at a shared memory + mapping. We can't repeat the spinlock hack used above because + the child process gets its own copy of the lock. */ + if (flags & CLONE_CHILD_SETTID) + put_user_u32(gettid(), child_tidptr); + if (flags & CLONE_PARENT_SETTID) + put_user_u32(gettid(), parent_tidptr); + ts = (TaskState *)cpu->opaque; + if (flags & CLONE_SETTLS) + cpu_set_tls (env, newtls); + if (flags & CLONE_CHILD_CLEARTID) + ts->child_tidptr = child_tidptr; + } else { + fork_end(0); + } + } + return ret; +} + +/* warning : doesn't handle linux specific flags... */ +static int target_to_host_fcntl_cmd(int cmd) +{ + switch(cmd) { + case TARGET_F_DUPFD: + case TARGET_F_GETFD: + case TARGET_F_SETFD: + case TARGET_F_GETFL: + case TARGET_F_SETFL: + return cmd; + case TARGET_F_GETLK: + return F_GETLK; + case TARGET_F_SETLK: + return F_SETLK; + case TARGET_F_SETLKW: + return F_SETLKW; + case TARGET_F_GETOWN: + return F_GETOWN; + case TARGET_F_SETOWN: + return F_SETOWN; + case TARGET_F_GETSIG: + return F_GETSIG; + case TARGET_F_SETSIG: + return F_SETSIG; +#if TARGET_ABI_BITS == 32 + case TARGET_F_GETLK64: + return F_GETLK64; + case TARGET_F_SETLK64: + return F_SETLK64; + case TARGET_F_SETLKW64: + return F_SETLKW64; +#endif + case TARGET_F_SETLEASE: + return F_SETLEASE; + case TARGET_F_GETLEASE: + return F_GETLEASE; +#ifdef F_DUPFD_CLOEXEC + case TARGET_F_DUPFD_CLOEXEC: + return F_DUPFD_CLOEXEC; +#endif + case TARGET_F_NOTIFY: + return F_NOTIFY; +#ifdef F_GETOWN_EX + case TARGET_F_GETOWN_EX: + return F_GETOWN_EX; +#endif +#ifdef F_SETOWN_EX + case TARGET_F_SETOWN_EX: + return F_SETOWN_EX; +#endif + default: + return -TARGET_EINVAL; + } + return -TARGET_EINVAL; +} + +#define TRANSTBL_CONVERT(a) { -1, TARGET_##a, -1, a } +static const bitmask_transtbl flock_tbl[] = { + TRANSTBL_CONVERT(F_RDLCK), + TRANSTBL_CONVERT(F_WRLCK), + TRANSTBL_CONVERT(F_UNLCK), + TRANSTBL_CONVERT(F_EXLCK), + TRANSTBL_CONVERT(F_SHLCK), + { 0, 0, 0, 0 } +}; + +static abi_long do_fcntl(int fd, int cmd, abi_ulong arg) +{ + struct flock fl; + struct target_flock *target_fl; + struct flock64 fl64; + struct target_flock64 *target_fl64; +#ifdef F_GETOWN_EX + struct f_owner_ex fox; + struct target_f_owner_ex *target_fox; +#endif + abi_long ret; + int host_cmd = target_to_host_fcntl_cmd(cmd); + + if (host_cmd == -TARGET_EINVAL) + return host_cmd; + + switch(cmd) { + case TARGET_F_GETLK: + if (!lock_user_struct(VERIFY_READ, target_fl, arg, 1)) + return -TARGET_EFAULT; + fl.l_type = + target_to_host_bitmask(tswap16(target_fl->l_type), flock_tbl); + fl.l_whence = tswap16(target_fl->l_whence); + fl.l_start = tswapal(target_fl->l_start); + fl.l_len = tswapal(target_fl->l_len); + fl.l_pid = tswap32(target_fl->l_pid); + unlock_user_struct(target_fl, arg, 0); + ret = get_errno(fcntl(fd, host_cmd, &fl)); + if (ret == 0) { + if (!lock_user_struct(VERIFY_WRITE, target_fl, arg, 0)) + return -TARGET_EFAULT; + target_fl->l_type = + host_to_target_bitmask(tswap16(fl.l_type), flock_tbl); + target_fl->l_whence = tswap16(fl.l_whence); + target_fl->l_start = tswapal(fl.l_start); + target_fl->l_len = tswapal(fl.l_len); + target_fl->l_pid = tswap32(fl.l_pid); + unlock_user_struct(target_fl, arg, 1); + } + break; + + case TARGET_F_SETLK: + case TARGET_F_SETLKW: + if (!lock_user_struct(VERIFY_READ, target_fl, arg, 1)) + return -TARGET_EFAULT; + fl.l_type = + target_to_host_bitmask(tswap16(target_fl->l_type), flock_tbl); + fl.l_whence = tswap16(target_fl->l_whence); + fl.l_start = tswapal(target_fl->l_start); + fl.l_len = tswapal(target_fl->l_len); + fl.l_pid = tswap32(target_fl->l_pid); + unlock_user_struct(target_fl, arg, 0); + ret = get_errno(fcntl(fd, host_cmd, &fl)); + break; + + case TARGET_F_GETLK64: + if (!lock_user_struct(VERIFY_READ, target_fl64, arg, 1)) + return -TARGET_EFAULT; + fl64.l_type = + target_to_host_bitmask(tswap16(target_fl64->l_type), flock_tbl) >> 1; + fl64.l_whence = tswap16(target_fl64->l_whence); + fl64.l_start = tswap64(target_fl64->l_start); + fl64.l_len = tswap64(target_fl64->l_len); + fl64.l_pid = tswap32(target_fl64->l_pid); + unlock_user_struct(target_fl64, arg, 0); + ret = get_errno(fcntl(fd, host_cmd, &fl64)); + if (ret == 0) { + if (!lock_user_struct(VERIFY_WRITE, target_fl64, arg, 0)) + return -TARGET_EFAULT; + target_fl64->l_type = + host_to_target_bitmask(tswap16(fl64.l_type), flock_tbl) >> 1; + target_fl64->l_whence = tswap16(fl64.l_whence); + target_fl64->l_start = tswap64(fl64.l_start); + target_fl64->l_len = tswap64(fl64.l_len); + target_fl64->l_pid = tswap32(fl64.l_pid); + unlock_user_struct(target_fl64, arg, 1); + } + break; + case TARGET_F_SETLK64: + case TARGET_F_SETLKW64: + if (!lock_user_struct(VERIFY_READ, target_fl64, arg, 1)) + return -TARGET_EFAULT; + fl64.l_type = + target_to_host_bitmask(tswap16(target_fl64->l_type), flock_tbl) >> 1; + fl64.l_whence = tswap16(target_fl64->l_whence); + fl64.l_start = tswap64(target_fl64->l_start); + fl64.l_len = tswap64(target_fl64->l_len); + fl64.l_pid = tswap32(target_fl64->l_pid); + unlock_user_struct(target_fl64, arg, 0); + ret = get_errno(fcntl(fd, host_cmd, &fl64)); + break; + + case TARGET_F_GETFL: + ret = get_errno(fcntl(fd, host_cmd, arg)); + if (ret >= 0) { + ret = host_to_target_bitmask(ret, fcntl_flags_tbl); + } + break; + + case TARGET_F_SETFL: + ret = get_errno(fcntl(fd, host_cmd, target_to_host_bitmask(arg, fcntl_flags_tbl))); + break; + +#ifdef F_GETOWN_EX + case TARGET_F_GETOWN_EX: + ret = get_errno(fcntl(fd, host_cmd, &fox)); + if (ret >= 0) { + if (!lock_user_struct(VERIFY_WRITE, target_fox, arg, 0)) + return -TARGET_EFAULT; + target_fox->type = tswap32(fox.type); + target_fox->pid = tswap32(fox.pid); + unlock_user_struct(target_fox, arg, 1); + } + break; +#endif + +#ifdef F_SETOWN_EX + case TARGET_F_SETOWN_EX: + if (!lock_user_struct(VERIFY_READ, target_fox, arg, 1)) + return -TARGET_EFAULT; + fox.type = tswap32(target_fox->type); + fox.pid = tswap32(target_fox->pid); + unlock_user_struct(target_fox, arg, 0); + ret = get_errno(fcntl(fd, host_cmd, &fox)); + break; +#endif + + case TARGET_F_SETOWN: + case TARGET_F_GETOWN: + case TARGET_F_SETSIG: + case TARGET_F_GETSIG: + case TARGET_F_SETLEASE: + case TARGET_F_GETLEASE: + ret = get_errno(fcntl(fd, host_cmd, arg)); + break; + + default: + ret = get_errno(fcntl(fd, cmd, arg)); + break; + } + return ret; +} + +#ifdef USE_UID16 + +static inline int high2lowuid(int uid) +{ + if (uid > 65535) + return 65534; + else + return uid; +} + +static inline int high2lowgid(int gid) +{ + if (gid > 65535) + return 65534; + else + return gid; +} + +static inline int low2highuid(int uid) +{ + if ((int16_t)uid == -1) + return -1; + else + return uid; +} + +static inline int low2highgid(int gid) +{ + if ((int16_t)gid == -1) + return -1; + else + return gid; +} +static inline int tswapid(int id) +{ + return tswap16(id); +} + +#define put_user_id(x, gaddr) put_user_u16(x, gaddr) + +#else /* !USE_UID16 */ +static inline int high2lowuid(int uid) +{ + return uid; +} +static inline int high2lowgid(int gid) +{ + return gid; +} +static inline int low2highuid(int uid) +{ + return uid; +} +static inline int low2highgid(int gid) +{ + return gid; +} +static inline int tswapid(int id) +{ + return tswap32(id); +} + +#define put_user_id(x, gaddr) put_user_u32(x, gaddr) + +#endif /* USE_UID16 */ + +void syscall_init(void) +{ + IOCTLEntry *ie; + const argtype *arg_type; + int size; + int i; + + thunk_init(STRUCT_MAX); + +#define STRUCT(name, ...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def); +#define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def); +#include "syscall_types.h" +#undef STRUCT +#undef STRUCT_SPECIAL + + /* Build target_to_host_errno_table[] table from + * host_to_target_errno_table[]. */ + for (i = 0; i < ERRNO_TABLE_SIZE; i++) { + target_to_host_errno_table[host_to_target_errno_table[i]] = i; + } + + /* we patch the ioctl size if necessary. We rely on the fact that + no ioctl has all the bits at '1' in the size field */ + ie = ioctl_entries; + while (ie->target_cmd != 0) { + if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) == + TARGET_IOC_SIZEMASK) { + arg_type = ie->arg_type; + if (arg_type[0] != TYPE_PTR) { + fprintf(stderr, "cannot patch size for ioctl 0x%x\n", + ie->target_cmd); + exit(1); + } + arg_type++; + size = thunk_type_size(arg_type, 0); + ie->target_cmd = (ie->target_cmd & + ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) | + (size << TARGET_IOC_SIZESHIFT); + } + + /* automatic consistency check if same arch */ +#if (defined(__i386__) && defined(TARGET_I386) && defined(TARGET_ABI32)) || \ + (defined(__x86_64__) && defined(TARGET_X86_64)) + if (unlikely(ie->target_cmd != ie->host_cmd)) { + fprintf(stderr, "ERROR: ioctl(%s): target=0x%x host=0x%x\n", + ie->name, ie->target_cmd, ie->host_cmd); + } +#endif + ie++; + } +} + +#if TARGET_ABI_BITS == 32 +static inline uint64_t target_offset64(uint32_t word0, uint32_t word1) +{ +#ifdef TARGET_WORDS_BIGENDIAN + return ((uint64_t)word0 << 32) | word1; +#else + return ((uint64_t)word1 << 32) | word0; +#endif +} +#else /* TARGET_ABI_BITS == 32 */ +static inline uint64_t target_offset64(uint64_t word0, uint64_t word1) +{ + return word0; +} +#endif /* TARGET_ABI_BITS != 32 */ + +#ifdef TARGET_NR_truncate64 +static inline abi_long target_truncate64(void *cpu_env, const char *arg1, + abi_long arg2, + abi_long arg3, + abi_long arg4) +{ + if (regpairs_aligned(cpu_env)) { + arg2 = arg3; + arg3 = arg4; + } + return get_errno(truncate64(arg1, target_offset64(arg2, arg3))); +} +#endif + +#ifdef TARGET_NR_ftruncate64 +static inline abi_long target_ftruncate64(void *cpu_env, abi_long arg1, + abi_long arg2, + abi_long arg3, + abi_long arg4) +{ + if (regpairs_aligned(cpu_env)) { + arg2 = arg3; + arg3 = arg4; + } + return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3))); +} +#endif + +static inline abi_long target_to_host_timespec(struct timespec *host_ts, + abi_ulong target_addr) +{ + struct target_timespec *target_ts; + + if (!lock_user_struct(VERIFY_READ, target_ts, target_addr, 1)) + return -TARGET_EFAULT; + host_ts->tv_sec = tswapal(target_ts->tv_sec); + host_ts->tv_nsec = tswapal(target_ts->tv_nsec); + unlock_user_struct(target_ts, target_addr, 0); + return 0; +} + +static inline abi_long host_to_target_timespec(abi_ulong target_addr, + struct timespec *host_ts) +{ + struct target_timespec *target_ts; + + if (!lock_user_struct(VERIFY_WRITE, target_ts, target_addr, 0)) + return -TARGET_EFAULT; + target_ts->tv_sec = tswapal(host_ts->tv_sec); + target_ts->tv_nsec = tswapal(host_ts->tv_nsec); + unlock_user_struct(target_ts, target_addr, 1); + return 0; +} + +static inline abi_long target_to_host_itimerspec(struct itimerspec *host_itspec, + abi_ulong target_addr) +{ + struct target_itimerspec *target_itspec; + + if (!lock_user_struct(VERIFY_READ, target_itspec, target_addr, 1)) { + return -TARGET_EFAULT; + } + + host_itspec->it_interval.tv_sec = + tswapal(target_itspec->it_interval.tv_sec); + host_itspec->it_interval.tv_nsec = + tswapal(target_itspec->it_interval.tv_nsec); + host_itspec->it_value.tv_sec = tswapal(target_itspec->it_value.tv_sec); + host_itspec->it_value.tv_nsec = tswapal(target_itspec->it_value.tv_nsec); + + unlock_user_struct(target_itspec, target_addr, 1); + return 0; +} + +static inline abi_long host_to_target_itimerspec(abi_ulong target_addr, + struct itimerspec *host_its) +{ + struct target_itimerspec *target_itspec; + + if (!lock_user_struct(VERIFY_WRITE, target_itspec, target_addr, 0)) { + return -TARGET_EFAULT; + } + + target_itspec->it_interval.tv_sec = tswapal(host_its->it_interval.tv_sec); + target_itspec->it_interval.tv_nsec = tswapal(host_its->it_interval.tv_nsec); + + target_itspec->it_value.tv_sec = tswapal(host_its->it_value.tv_sec); + target_itspec->it_value.tv_nsec = tswapal(host_its->it_value.tv_nsec); + + unlock_user_struct(target_itspec, target_addr, 0); + return 0; +} + +static inline abi_long target_to_host_sigevent(struct sigevent *host_sevp, + abi_ulong target_addr) +{ + struct target_sigevent *target_sevp; + + if (!lock_user_struct(VERIFY_READ, target_sevp, target_addr, 1)) { + return -TARGET_EFAULT; + } + + /* This union is awkward on 64 bit systems because it has a 32 bit + * integer and a pointer in it; we follow the conversion approach + * used for handling sigval types in signal.c so the guest should get + * the correct value back even if we did a 64 bit byteswap and it's + * using the 32 bit integer. + */ + host_sevp->sigev_value.sival_ptr = + (void *)(uintptr_t)tswapal(target_sevp->sigev_value.sival_ptr); + host_sevp->sigev_signo = + target_to_host_signal(tswap32(target_sevp->sigev_signo)); + host_sevp->sigev_notify = tswap32(target_sevp->sigev_notify); + host_sevp->_sigev_un._tid = tswap32(target_sevp->_sigev_un._tid); + + unlock_user_struct(target_sevp, target_addr, 1); + return 0; +} + +#if defined(TARGET_NR_mlockall) +static inline int target_to_host_mlockall_arg(int arg) +{ + int result = 0; + + if (arg & TARGET_MLOCKALL_MCL_CURRENT) { + result |= MCL_CURRENT; + } + if (arg & TARGET_MLOCKALL_MCL_FUTURE) { + result |= MCL_FUTURE; + } + return result; +} +#endif + +#if defined(TARGET_NR_stat64) || defined(TARGET_NR_newfstatat) +static inline abi_long host_to_target_stat64(void *cpu_env, + abi_ulong target_addr, + struct stat *host_st) +{ +#if defined(TARGET_ARM) && defined(TARGET_ABI32) + if (((CPUARMState *)cpu_env)->eabi) { + struct target_eabi_stat64 *target_st; + + if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) + return -TARGET_EFAULT; + memset(target_st, 0, sizeof(struct target_eabi_stat64)); + __put_user(host_st->st_dev, &target_st->st_dev); + __put_user(host_st->st_ino, &target_st->st_ino); +#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO + __put_user(host_st->st_ino, &target_st->__st_ino); +#endif + __put_user(host_st->st_mode, &target_st->st_mode); + __put_user(host_st->st_nlink, &target_st->st_nlink); + __put_user(host_st->st_uid, &target_st->st_uid); + __put_user(host_st->st_gid, &target_st->st_gid); + __put_user(host_st->st_rdev, &target_st->st_rdev); + __put_user(host_st->st_size, &target_st->st_size); + __put_user(host_st->st_blksize, &target_st->st_blksize); + __put_user(host_st->st_blocks, &target_st->st_blocks); + __put_user(host_st->st_atime, &target_st->target_st_atime); + __put_user(host_st->st_mtime, &target_st->target_st_mtime); + __put_user(host_st->st_ctime, &target_st->target_st_ctime); + unlock_user_struct(target_st, target_addr, 1); + } else +#endif + { +#if defined(TARGET_HAS_STRUCT_STAT64) + struct target_stat64 *target_st; +#else + struct target_stat *target_st; +#endif + + if (!lock_user_struct(VERIFY_WRITE, target_st, target_addr, 0)) + return -TARGET_EFAULT; + memset(target_st, 0, sizeof(*target_st)); + __put_user(host_st->st_dev, &target_st->st_dev); + __put_user(host_st->st_ino, &target_st->st_ino); +#ifdef TARGET_STAT64_HAS_BROKEN_ST_INO + __put_user(host_st->st_ino, &target_st->__st_ino); +#endif + __put_user(host_st->st_mode, &target_st->st_mode); + __put_user(host_st->st_nlink, &target_st->st_nlink); + __put_user(host_st->st_uid, &target_st->st_uid); + __put_user(host_st->st_gid, &target_st->st_gid); + __put_user(host_st->st_rdev, &target_st->st_rdev); + /* XXX: better use of kernel struct */ + __put_user(host_st->st_size, &target_st->st_size); + __put_user(host_st->st_blksize, &target_st->st_blksize); + __put_user(host_st->st_blocks, &target_st->st_blocks); + __put_user(host_st->st_atime, &target_st->target_st_atime); + __put_user(host_st->st_mtime, &target_st->target_st_mtime); + __put_user(host_st->st_ctime, &target_st->target_st_ctime); + unlock_user_struct(target_st, target_addr, 1); + } + + return 0; +} +#endif + +/* ??? Using host futex calls even when target atomic operations + are not really atomic probably breaks things. However implementing + futexes locally would make futexes shared between multiple processes + tricky. However they're probably useless because guest atomic + operations won't work either. */ +static int do_futex(target_ulong uaddr, int op, int val, target_ulong timeout, + target_ulong uaddr2, int val3) +{ + struct timespec ts, *pts; + int base_op; + + /* ??? We assume FUTEX_* constants are the same on both host + and target. */ +#ifdef FUTEX_CMD_MASK + base_op = op & FUTEX_CMD_MASK; +#else + base_op = op; +#endif + switch (base_op) { + case FUTEX_WAIT: + case FUTEX_WAIT_BITSET: + if (timeout) { + pts = &ts; + target_to_host_timespec(pts, timeout); + } else { + pts = NULL; + } + return get_errno(sys_futex(g2h(uaddr), op, tswap32(val), + pts, NULL, val3)); + case FUTEX_WAKE: + return get_errno(sys_futex(g2h(uaddr), op, val, NULL, NULL, 0)); + case FUTEX_FD: + return get_errno(sys_futex(g2h(uaddr), op, val, NULL, NULL, 0)); + case FUTEX_REQUEUE: + case FUTEX_CMP_REQUEUE: + case FUTEX_WAKE_OP: + /* For FUTEX_REQUEUE, FUTEX_CMP_REQUEUE, and FUTEX_WAKE_OP, the + TIMEOUT parameter is interpreted as a uint32_t by the kernel. + But the prototype takes a `struct timespec *'; insert casts + to satisfy the compiler. We do not need to tswap TIMEOUT + since it's not compared to guest memory. */ + pts = (struct timespec *)(uintptr_t) timeout; + return get_errno(sys_futex(g2h(uaddr), op, val, pts, + g2h(uaddr2), + (base_op == FUTEX_CMP_REQUEUE + ? tswap32(val3) + : val3))); + default: + return -TARGET_ENOSYS; + } +} + +/* Map host to target signal numbers for the wait family of syscalls. + Assume all other status bits are the same. */ +int host_to_target_waitstatus(int status) +{ + if (WIFSIGNALED(status)) { + return host_to_target_signal(WTERMSIG(status)) | (status & ~0x7f); + } + if (WIFSTOPPED(status)) { + return (host_to_target_signal(WSTOPSIG(status)) << 8) + | (status & 0xff); + } + return status; +} + +static int open_self_cmdline(void *cpu_env, int fd) +{ + int fd_orig = -1; + bool word_skipped = false; + + fd_orig = open("/proc/self/cmdline", O_RDONLY); + if (fd_orig < 0) { + return fd_orig; + } + + while (true) { + ssize_t nb_read; + char buf[128]; + char *cp_buf = buf; + + nb_read = read(fd_orig, buf, sizeof(buf)); + if (nb_read < 0) { + fd_orig = close(fd_orig); + return -1; + } else if (nb_read == 0) { + break; + } + + if (!word_skipped) { + /* Skip the first string, which is the path to qemu-*-static + instead of the actual command. */ + cp_buf = memchr(buf, 0, sizeof(buf)); + if (cp_buf) { + /* Null byte found, skip one string */ + cp_buf++; + nb_read -= cp_buf - buf; + word_skipped = true; + } + } + + if (word_skipped) { + if (write(fd, cp_buf, nb_read) != nb_read) { + close(fd_orig); + return -1; + } + } + } + + return close(fd_orig); +} + +static int open_self_maps(void *cpu_env, int fd) +{ + CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); + TaskState *ts = cpu->opaque; + FILE *fp; + char *line = NULL; + size_t len = 0; + ssize_t read; + + fp = fopen("/proc/self/maps", "r"); + if (fp == NULL) { + return -EACCES; + } + + while ((read = getline(&line, &len, fp)) != -1) { + int fields, dev_maj, dev_min, inode; + uint64_t min, max, offset; + char flag_r, flag_w, flag_x, flag_p; + char path[512] = ""; + fields = sscanf(line, "%"PRIx64"-%"PRIx64" %c%c%c%c %"PRIx64" %x:%x %d" + " %512s", &min, &max, &flag_r, &flag_w, &flag_x, + &flag_p, &offset, &dev_maj, &dev_min, &inode, path); + + if ((fields < 10) || (fields > 11)) { + continue; + } + if (h2g_valid(min)) { + int flags = page_get_flags(h2g(min)); + max = h2g_valid(max - 1) ? max : (uintptr_t)g2h(GUEST_ADDR_MAX); + if (page_check_range(h2g(min), max - min, flags) == -1) { + continue; + } + if (h2g(min) == ts->info->stack_limit) { + pstrcpy(path, sizeof(path), " [stack]"); + } + dprintf(fd, TARGET_ABI_FMT_lx "-" TARGET_ABI_FMT_lx + " %c%c%c%c %08" PRIx64 " %02x:%02x %d %s%s\n", + h2g(min), h2g(max - 1) + 1, flag_r, flag_w, + flag_x, flag_p, offset, dev_maj, dev_min, inode, + path[0] ? " " : "", path); + } + } + + free(line); + fclose(fp); + + return 0; +} + +static int open_self_stat(void *cpu_env, int fd) +{ + CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); + TaskState *ts = cpu->opaque; + abi_ulong start_stack = ts->info->start_stack; + int i; + + for (i = 0; i < 44; i++) { + char buf[128]; + int len; + uint64_t val = 0; + + if (i == 0) { + /* pid */ + val = getpid(); + snprintf(buf, sizeof(buf), "%"PRId64 " ", val); + } else if (i == 1) { + /* app name */ + snprintf(buf, sizeof(buf), "(%s) ", ts->bprm->argv[0]); + } else if (i == 27) { + /* stack bottom */ + val = start_stack; + snprintf(buf, sizeof(buf), "%"PRId64 " ", val); + } else { + /* for the rest, there is MasterCard */ + snprintf(buf, sizeof(buf), "0%c", i == 43 ? '\n' : ' '); + } + + len = strlen(buf); + if (write(fd, buf, len) != len) { + return -1; + } + } + + return 0; +} + +static int open_self_auxv(void *cpu_env, int fd) +{ + CPUState *cpu = ENV_GET_CPU((CPUArchState *)cpu_env); + TaskState *ts = cpu->opaque; + abi_ulong auxv = ts->info->saved_auxv; + abi_ulong len = ts->info->auxv_len; + char *ptr; + + /* + * Auxiliary vector is stored in target process stack. + * read in whole auxv vector and copy it to file + */ + ptr = lock_user(VERIFY_READ, auxv, len, 0); + if (ptr != NULL) { + while (len > 0) { + ssize_t r; + r = write(fd, ptr, len); + if (r <= 0) { + break; + } + len -= r; + ptr += r; + } + lseek(fd, 0, SEEK_SET); + unlock_user(ptr, auxv, len); + } + + return 0; +} + +static int is_proc_myself(const char *filename, const char *entry) +{ + if (!strncmp(filename, "/proc/", strlen("/proc/"))) { + filename += strlen("/proc/"); + if (!strncmp(filename, "self/", strlen("self/"))) { + filename += strlen("self/"); + } else if (*filename >= '1' && *filename <= '9') { + char myself[80]; + snprintf(myself, sizeof(myself), "%d/", getpid()); + if (!strncmp(filename, myself, strlen(myself))) { + filename += strlen(myself); + } else { + return 0; + } + } else { + return 0; + } + if (!strcmp(filename, entry)) { + return 1; + } + } + return 0; +} + +#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) +static int is_proc(const char *filename, const char *entry) +{ + return strcmp(filename, entry) == 0; +} + +static int open_net_route(void *cpu_env, int fd) +{ + FILE *fp; + char *line = NULL; + size_t len = 0; + ssize_t read; + + fp = fopen("/proc/net/route", "r"); + if (fp == NULL) { + return -EACCES; + } + + /* read header */ + + read = getline(&line, &len, fp); + dprintf(fd, "%s", line); + + /* read routes */ + + while ((read = getline(&line, &len, fp)) != -1) { + char iface[16]; + uint32_t dest, gw, mask; + unsigned int flags, refcnt, use, metric, mtu, window, irtt; + sscanf(line, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", + iface, &dest, &gw, &flags, &refcnt, &use, &metric, + &mask, &mtu, &window, &irtt); + dprintf(fd, "%s\t%08x\t%08x\t%04x\t%d\t%d\t%d\t%08x\t%d\t%u\t%u\n", + iface, tswap32(dest), tswap32(gw), flags, refcnt, use, + metric, tswap32(mask), mtu, window, irtt); + } + + free(line); + fclose(fp); + + return 0; +} +#endif + +static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags, mode_t mode) +{ + struct fake_open { + const char *filename; + int (*fill)(void *cpu_env, int fd); + int (*cmp)(const char *s1, const char *s2); + }; + const struct fake_open *fake_open; + static const struct fake_open fakes[] = { + { "maps", open_self_maps, is_proc_myself }, + { "stat", open_self_stat, is_proc_myself }, + { "auxv", open_self_auxv, is_proc_myself }, + { "cmdline", open_self_cmdline, is_proc_myself }, +#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) + { "/proc/net/route", open_net_route, is_proc }, +#endif + { NULL, NULL, NULL } + }; + + if (is_proc_myself(pathname, "exe")) { + int execfd = qemu_getauxval(AT_EXECFD); + return execfd ? execfd : get_errno(sys_openat(dirfd, exec_path, flags, mode)); + } + + for (fake_open = fakes; fake_open->filename; fake_open++) { + if (fake_open->cmp(pathname, fake_open->filename)) { + break; + } + } + + if (fake_open->filename) { + const char *tmpdir; + char filename[PATH_MAX]; + int fd, r; + + /* create temporary file to map stat to */ + tmpdir = getenv("TMPDIR"); + if (!tmpdir) + tmpdir = "/tmp"; + snprintf(filename, sizeof(filename), "%s/qemu-open.XXXXXX", tmpdir); + fd = mkstemp(filename); + if (fd < 0) { + return fd; + } + unlink(filename); + + if ((r = fake_open->fill(cpu_env, fd))) { + close(fd); + return r; + } + lseek(fd, 0, SEEK_SET); + + return fd; + } + + return get_errno(sys_openat(dirfd, path(pathname), flags, mode)); +} + +#define TIMER_MAGIC 0x0caf0000 +#define TIMER_MAGIC_MASK 0xffff0000 + +/* Convert QEMU provided timer ID back to internal 16bit index format */ +static target_timer_t get_timer_id(abi_long arg) +{ + target_timer_t timerid = arg; + + if ((timerid & TIMER_MAGIC_MASK) != TIMER_MAGIC) { + return -TARGET_EINVAL; + } + + timerid &= 0xffff; + + if (timerid >= ARRAY_SIZE(g_posix_timers)) { + return -TARGET_EINVAL; + } + + return timerid; +} + +/* do_syscall() should always have a single exit point at the end so + that actions, such as logging of syscall results, can be performed. + All errnos that do_syscall() returns must be -TARGET_<errcode>. */ +abi_long do_syscall(void *cpu_env, int num, abi_long arg1, + abi_long arg2, abi_long arg3, abi_long arg4, + abi_long arg5, abi_long arg6, abi_long arg7, + abi_long arg8) +{ + CPUState *cpu = ENV_GET_CPU(cpu_env); + abi_long ret; + struct stat st; + struct statfs stfs; + void *p; + +#ifdef DEBUG + gemu_log("syscall %d", num); +#endif + if(do_strace) + print_syscall(num, arg1, arg2, arg3, arg4, arg5, arg6); + + switch(num) { + case TARGET_NR_exit: + /* In old applications this may be used to implement _exit(2). + However in threaded applictions it is used for thread termination, + and _exit_group is used for application termination. + Do thread termination if we have more then one thread. */ + /* FIXME: This probably breaks if a signal arrives. We should probably + be disabling signals. */ + if (CPU_NEXT(first_cpu)) { + TaskState *ts; + + cpu_list_lock(); + /* Remove the CPU from the list. */ + QTAILQ_REMOVE(&cpus, cpu, node); + cpu_list_unlock(); + ts = cpu->opaque; + if (ts->child_tidptr) { + put_user_u32(0, ts->child_tidptr); + sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX, + NULL, NULL, 0); + } + thread_cpu = NULL; + object_unref(OBJECT(cpu)); + g_free(ts); + pthread_exit(NULL); + } +#ifdef TARGET_GPROF + _mcleanup(); +#endif + gdb_exit(cpu_env, arg1); + _exit(arg1); + ret = 0; /* avoid warning */ + break; + case TARGET_NR_read: + if (arg3 == 0) + ret = 0; + else { + if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) + goto efault; + ret = get_errno(read(arg1, p, arg3)); + unlock_user(p, arg2, ret); + } + break; + case TARGET_NR_write: + if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) + goto efault; + ret = get_errno(write(arg1, p, arg3)); + unlock_user(p, arg2, 0); + break; + case TARGET_NR_open: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(do_openat(cpu_env, AT_FDCWD, p, + target_to_host_bitmask(arg2, fcntl_flags_tbl), + arg3)); + unlock_user(p, arg1, 0); + break; + case TARGET_NR_openat: + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(do_openat(cpu_env, arg1, p, + target_to_host_bitmask(arg3, fcntl_flags_tbl), + arg4)); + unlock_user(p, arg2, 0); + break; + case TARGET_NR_close: + ret = get_errno(close(arg1)); + break; + case TARGET_NR_brk: + ret = do_brk(arg1); + break; + case TARGET_NR_fork: + ret = get_errno(do_fork(cpu_env, SIGCHLD, 0, 0, 0, 0)); + break; +#ifdef TARGET_NR_waitpid + case TARGET_NR_waitpid: + { + int status; + ret = get_errno(waitpid(arg1, &status, arg3)); + if (!is_error(ret) && arg2 && ret + && put_user_s32(host_to_target_waitstatus(status), arg2)) + goto efault; + } + break; +#endif +#ifdef TARGET_NR_waitid + case TARGET_NR_waitid: + { + siginfo_t info; + info.si_pid = 0; + ret = get_errno(waitid(arg1, arg2, &info, arg4)); + if (!is_error(ret) && arg3 && info.si_pid != 0) { + if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_siginfo_t), 0))) + goto efault; + host_to_target_siginfo(p, &info); + unlock_user(p, arg3, sizeof(target_siginfo_t)); + } + } + break; +#endif +#ifdef TARGET_NR_creat /* not on alpha */ + case TARGET_NR_creat: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(creat(p, arg2)); + unlock_user(p, arg1, 0); + break; +#endif + case TARGET_NR_link: + { + void * p2; + p = lock_user_string(arg1); + p2 = lock_user_string(arg2); + if (!p || !p2) + ret = -TARGET_EFAULT; + else + ret = get_errno(link(p, p2)); + unlock_user(p2, arg2, 0); + unlock_user(p, arg1, 0); + } + break; +#if defined(TARGET_NR_linkat) + case TARGET_NR_linkat: + { + void * p2 = NULL; + if (!arg2 || !arg4) + goto efault; + p = lock_user_string(arg2); + p2 = lock_user_string(arg4); + if (!p || !p2) + ret = -TARGET_EFAULT; + else + ret = get_errno(linkat(arg1, p, arg3, p2, arg5)); + unlock_user(p, arg2, 0); + unlock_user(p2, arg4, 0); + } + break; +#endif + case TARGET_NR_unlink: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(unlink(p)); + unlock_user(p, arg1, 0); + break; +#if defined(TARGET_NR_unlinkat) + case TARGET_NR_unlinkat: + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(unlinkat(arg1, p, arg3)); + unlock_user(p, arg2, 0); + break; +#endif + case TARGET_NR_execve: + { + char **argp, **envp; + int argc, envc; + abi_ulong gp; + abi_ulong guest_argp; + abi_ulong guest_envp; + abi_ulong addr; + char **q; + int total_size = 0; + + argc = 0; + guest_argp = arg2; + for (gp = guest_argp; gp; gp += sizeof(abi_ulong)) { + if (get_user_ual(addr, gp)) + goto efault; + if (!addr) + break; + argc++; + } + envc = 0; + guest_envp = arg3; + for (gp = guest_envp; gp; gp += sizeof(abi_ulong)) { + if (get_user_ual(addr, gp)) + goto efault; + if (!addr) + break; + envc++; + } + + argp = alloca((argc + 1) * sizeof(void *)); + envp = alloca((envc + 1) * sizeof(void *)); + + for (gp = guest_argp, q = argp; gp; + gp += sizeof(abi_ulong), q++) { + if (get_user_ual(addr, gp)) + goto execve_efault; + if (!addr) + break; + if (!(*q = lock_user_string(addr))) + goto execve_efault; + total_size += strlen(*q) + 1; + } + *q = NULL; + + for (gp = guest_envp, q = envp; gp; + gp += sizeof(abi_ulong), q++) { + if (get_user_ual(addr, gp)) + goto execve_efault; + if (!addr) + break; + if (!(*q = lock_user_string(addr))) + goto execve_efault; + total_size += strlen(*q) + 1; + } + *q = NULL; + + /* This case will not be caught by the host's execve() if its + page size is bigger than the target's. */ + if (total_size > MAX_ARG_PAGES * TARGET_PAGE_SIZE) { + ret = -TARGET_E2BIG; + goto execve_end; + } + if (!(p = lock_user_string(arg1))) + goto execve_efault; + ret = get_errno(execve(p, argp, envp)); + unlock_user(p, arg1, 0); + + goto execve_end; + + execve_efault: + ret = -TARGET_EFAULT; + + execve_end: + for (gp = guest_argp, q = argp; *q; + gp += sizeof(abi_ulong), q++) { + if (get_user_ual(addr, gp) + || !addr) + break; + unlock_user(*q, addr, 0); + } + for (gp = guest_envp, q = envp; *q; + gp += sizeof(abi_ulong), q++) { + if (get_user_ual(addr, gp) + || !addr) + break; + unlock_user(*q, addr, 0); + } + } + break; + case TARGET_NR_chdir: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(chdir(p)); + unlock_user(p, arg1, 0); + break; +#ifdef TARGET_NR_time + case TARGET_NR_time: + { + time_t host_time; + ret = get_errno(time(&host_time)); + if (!is_error(ret) + && arg1 + && put_user_sal(host_time, arg1)) + goto efault; + } + break; +#endif + case TARGET_NR_mknod: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(mknod(p, arg2, arg3)); + unlock_user(p, arg1, 0); + break; +#if defined(TARGET_NR_mknodat) + case TARGET_NR_mknodat: + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(mknodat(arg1, p, arg3, arg4)); + unlock_user(p, arg2, 0); + break; +#endif + case TARGET_NR_chmod: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(chmod(p, arg2)); + unlock_user(p, arg1, 0); + break; +#ifdef TARGET_NR_break + case TARGET_NR_break: + goto unimplemented; +#endif +#ifdef TARGET_NR_oldstat + case TARGET_NR_oldstat: + goto unimplemented; +#endif + case TARGET_NR_lseek: + ret = get_errno(lseek(arg1, arg2, arg3)); + break; +#if defined(TARGET_NR_getxpid) && defined(TARGET_ALPHA) + /* Alpha specific */ + case TARGET_NR_getxpid: + ((CPUAlphaState *)cpu_env)->ir[IR_A4] = getppid(); + ret = get_errno(getpid()); + break; +#endif +#ifdef TARGET_NR_getpid + case TARGET_NR_getpid: + ret = get_errno(getpid()); + break; +#endif + case TARGET_NR_mount: + { + /* need to look at the data field */ + void *p2, *p3; + + if (arg1) { + p = lock_user_string(arg1); + if (!p) { + goto efault; + } + } else { + p = NULL; + } + + p2 = lock_user_string(arg2); + if (!p2) { + if (arg1) { + unlock_user(p, arg1, 0); + } + goto efault; + } + + if (arg3) { + p3 = lock_user_string(arg3); + if (!p3) { + if (arg1) { + unlock_user(p, arg1, 0); + } + unlock_user(p2, arg2, 0); + goto efault; + } + } else { + p3 = NULL; + } + + /* FIXME - arg5 should be locked, but it isn't clear how to + * do that since it's not guaranteed to be a NULL-terminated + * string. + */ + if (!arg5) { + ret = mount(p, p2, p3, (unsigned long)arg4, NULL); + } else { + ret = mount(p, p2, p3, (unsigned long)arg4, g2h(arg5)); + } + ret = get_errno(ret); + + if (arg1) { + unlock_user(p, arg1, 0); + } + unlock_user(p2, arg2, 0); + if (arg3) { + unlock_user(p3, arg3, 0); + } + } + break; +#ifdef TARGET_NR_umount + case TARGET_NR_umount: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(umount(p)); + unlock_user(p, arg1, 0); + break; +#endif +#ifdef TARGET_NR_stime /* not on alpha */ + case TARGET_NR_stime: + { + time_t host_time; + if (get_user_sal(host_time, arg1)) + goto efault; + ret = get_errno(stime(&host_time)); + } + break; +#endif + case TARGET_NR_ptrace: + goto unimplemented; +#ifdef TARGET_NR_alarm /* not on alpha */ + case TARGET_NR_alarm: + ret = alarm(arg1); + break; +#endif +#ifdef TARGET_NR_oldfstat + case TARGET_NR_oldfstat: + goto unimplemented; +#endif +#ifdef TARGET_NR_pause /* not on alpha */ + case TARGET_NR_pause: + ret = get_errno(pause()); + break; +#endif +#ifdef TARGET_NR_utime + case TARGET_NR_utime: + { + struct utimbuf tbuf, *host_tbuf; + struct target_utimbuf *target_tbuf; + if (arg2) { + if (!lock_user_struct(VERIFY_READ, target_tbuf, arg2, 1)) + goto efault; + tbuf.actime = tswapal(target_tbuf->actime); + tbuf.modtime = tswapal(target_tbuf->modtime); + unlock_user_struct(target_tbuf, arg2, 0); + host_tbuf = &tbuf; + } else { + host_tbuf = NULL; + } + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(utime(p, host_tbuf)); + unlock_user(p, arg1, 0); + } + break; +#endif + case TARGET_NR_utimes: + { + struct timeval *tvp, tv[2]; + if (arg2) { + if (copy_from_user_timeval(&tv[0], arg2) + || copy_from_user_timeval(&tv[1], + arg2 + sizeof(struct target_timeval))) + goto efault; + tvp = tv; + } else { + tvp = NULL; + } + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(utimes(p, tvp)); + unlock_user(p, arg1, 0); + } + break; +#if defined(TARGET_NR_futimesat) + case TARGET_NR_futimesat: + { + struct timeval *tvp, tv[2]; + if (arg3) { + if (copy_from_user_timeval(&tv[0], arg3) + || copy_from_user_timeval(&tv[1], + arg3 + sizeof(struct target_timeval))) + goto efault; + tvp = tv; + } else { + tvp = NULL; + } + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(futimesat(arg1, path(p), tvp)); + unlock_user(p, arg2, 0); + } + break; +#endif +#ifdef TARGET_NR_stty + case TARGET_NR_stty: + goto unimplemented; +#endif +#ifdef TARGET_NR_gtty + case TARGET_NR_gtty: + goto unimplemented; +#endif + case TARGET_NR_access: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(access(path(p), arg2)); + unlock_user(p, arg1, 0); + break; +#if defined(TARGET_NR_faccessat) && defined(__NR_faccessat) + case TARGET_NR_faccessat: + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(faccessat(arg1, p, arg3, 0)); + unlock_user(p, arg2, 0); + break; +#endif +#ifdef TARGET_NR_nice /* not on alpha */ + case TARGET_NR_nice: + ret = get_errno(nice(arg1)); + break; +#endif +#ifdef TARGET_NR_ftime + case TARGET_NR_ftime: + goto unimplemented; +#endif + case TARGET_NR_sync: + sync(); + ret = 0; + break; + case TARGET_NR_kill: + ret = get_errno(kill(arg1, target_to_host_signal(arg2))); + break; + case TARGET_NR_rename: + { + void *p2; + p = lock_user_string(arg1); + p2 = lock_user_string(arg2); + if (!p || !p2) + ret = -TARGET_EFAULT; + else + ret = get_errno(rename(p, p2)); + unlock_user(p2, arg2, 0); + unlock_user(p, arg1, 0); + } + break; +#if defined(TARGET_NR_renameat) + case TARGET_NR_renameat: + { + void *p2; + p = lock_user_string(arg2); + p2 = lock_user_string(arg4); + if (!p || !p2) + ret = -TARGET_EFAULT; + else + ret = get_errno(renameat(arg1, p, arg3, p2)); + unlock_user(p2, arg4, 0); + unlock_user(p, arg2, 0); + } + break; +#endif + case TARGET_NR_mkdir: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(mkdir(p, arg2)); + unlock_user(p, arg1, 0); + break; +#if defined(TARGET_NR_mkdirat) + case TARGET_NR_mkdirat: + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(mkdirat(arg1, p, arg3)); + unlock_user(p, arg2, 0); + break; +#endif + case TARGET_NR_rmdir: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(rmdir(p)); + unlock_user(p, arg1, 0); + break; + case TARGET_NR_dup: + ret = get_errno(dup(arg1)); + break; + case TARGET_NR_pipe: + ret = do_pipe(cpu_env, arg1, 0, 0); + break; +#ifdef TARGET_NR_pipe2 + case TARGET_NR_pipe2: + ret = do_pipe(cpu_env, arg1, + target_to_host_bitmask(arg2, fcntl_flags_tbl), 1); + break; +#endif + case TARGET_NR_times: + { + struct target_tms *tmsp; + struct tms tms; + ret = get_errno(times(&tms)); + if (arg1) { + tmsp = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_tms), 0); + if (!tmsp) + goto efault; + tmsp->tms_utime = tswapal(host_to_target_clock_t(tms.tms_utime)); + tmsp->tms_stime = tswapal(host_to_target_clock_t(tms.tms_stime)); + tmsp->tms_cutime = tswapal(host_to_target_clock_t(tms.tms_cutime)); + tmsp->tms_cstime = tswapal(host_to_target_clock_t(tms.tms_cstime)); + } + if (!is_error(ret)) + ret = host_to_target_clock_t(ret); + } + break; +#ifdef TARGET_NR_prof + case TARGET_NR_prof: + goto unimplemented; +#endif +#ifdef TARGET_NR_signal + case TARGET_NR_signal: + goto unimplemented; +#endif + case TARGET_NR_acct: + if (arg1 == 0) { + ret = get_errno(acct(NULL)); + } else { + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(acct(path(p))); + unlock_user(p, arg1, 0); + } + break; +#ifdef TARGET_NR_umount2 + case TARGET_NR_umount2: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(umount2(p, arg2)); + unlock_user(p, arg1, 0); + break; +#endif +#ifdef TARGET_NR_lock + case TARGET_NR_lock: + goto unimplemented; +#endif + case TARGET_NR_ioctl: + ret = do_ioctl(arg1, arg2, arg3); + break; + case TARGET_NR_fcntl: + ret = do_fcntl(arg1, arg2, arg3); + break; +#ifdef TARGET_NR_mpx + case TARGET_NR_mpx: + goto unimplemented; +#endif + case TARGET_NR_setpgid: + ret = get_errno(setpgid(arg1, arg2)); + break; +#ifdef TARGET_NR_ulimit + case TARGET_NR_ulimit: + goto unimplemented; +#endif +#ifdef TARGET_NR_oldolduname + case TARGET_NR_oldolduname: + goto unimplemented; +#endif + case TARGET_NR_umask: + ret = get_errno(umask(arg1)); + break; + case TARGET_NR_chroot: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(chroot(p)); + unlock_user(p, arg1, 0); + break; + case TARGET_NR_ustat: + goto unimplemented; + case TARGET_NR_dup2: + ret = get_errno(dup2(arg1, arg2)); + break; +#if defined(CONFIG_DUP3) && defined(TARGET_NR_dup3) + case TARGET_NR_dup3: + ret = get_errno(dup3(arg1, arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_getppid /* not on alpha */ + case TARGET_NR_getppid: + ret = get_errno(getppid()); + break; +#endif + case TARGET_NR_getpgrp: + ret = get_errno(getpgrp()); + break; + case TARGET_NR_setsid: + ret = get_errno(setsid()); + break; +#ifdef TARGET_NR_sigaction + case TARGET_NR_sigaction: + { +#if defined(TARGET_ALPHA) + struct target_sigaction act, oact, *pact = 0; + struct target_old_sigaction *old_act; + if (arg2) { + if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) + goto efault; + act._sa_handler = old_act->_sa_handler; + target_siginitset(&act.sa_mask, old_act->sa_mask); + act.sa_flags = old_act->sa_flags; + act.sa_restorer = 0; + unlock_user_struct(old_act, arg2, 0); + pact = &act; + } + ret = get_errno(do_sigaction(arg1, pact, &oact)); + if (!is_error(ret) && arg3) { + if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) + goto efault; + old_act->_sa_handler = oact._sa_handler; + old_act->sa_mask = oact.sa_mask.sig[0]; + old_act->sa_flags = oact.sa_flags; + unlock_user_struct(old_act, arg3, 1); + } +#elif defined(TARGET_MIPS) + struct target_sigaction act, oact, *pact, *old_act; + + if (arg2) { + if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) + goto efault; + act._sa_handler = old_act->_sa_handler; + target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]); + act.sa_flags = old_act->sa_flags; + unlock_user_struct(old_act, arg2, 0); + pact = &act; + } else { + pact = NULL; + } + + ret = get_errno(do_sigaction(arg1, pact, &oact)); + + if (!is_error(ret) && arg3) { + if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) + goto efault; + old_act->_sa_handler = oact._sa_handler; + old_act->sa_flags = oact.sa_flags; + old_act->sa_mask.sig[0] = oact.sa_mask.sig[0]; + old_act->sa_mask.sig[1] = 0; + old_act->sa_mask.sig[2] = 0; + old_act->sa_mask.sig[3] = 0; + unlock_user_struct(old_act, arg3, 1); + } +#else + struct target_old_sigaction *old_act; + struct target_sigaction act, oact, *pact; + if (arg2) { + if (!lock_user_struct(VERIFY_READ, old_act, arg2, 1)) + goto efault; + act._sa_handler = old_act->_sa_handler; + target_siginitset(&act.sa_mask, old_act->sa_mask); + act.sa_flags = old_act->sa_flags; + act.sa_restorer = old_act->sa_restorer; + unlock_user_struct(old_act, arg2, 0); + pact = &act; + } else { + pact = NULL; + } + ret = get_errno(do_sigaction(arg1, pact, &oact)); + if (!is_error(ret) && arg3) { + if (!lock_user_struct(VERIFY_WRITE, old_act, arg3, 0)) + goto efault; + old_act->_sa_handler = oact._sa_handler; + old_act->sa_mask = oact.sa_mask.sig[0]; + old_act->sa_flags = oact.sa_flags; + old_act->sa_restorer = oact.sa_restorer; + unlock_user_struct(old_act, arg3, 1); + } +#endif + } + break; +#endif + case TARGET_NR_rt_sigaction: + { +#if defined(TARGET_ALPHA) + struct target_sigaction act, oact, *pact = 0; + struct target_rt_sigaction *rt_act; + /* ??? arg4 == sizeof(sigset_t). */ + if (arg2) { + if (!lock_user_struct(VERIFY_READ, rt_act, arg2, 1)) + goto efault; + act._sa_handler = rt_act->_sa_handler; + act.sa_mask = rt_act->sa_mask; + act.sa_flags = rt_act->sa_flags; + act.sa_restorer = arg5; + unlock_user_struct(rt_act, arg2, 0); + pact = &act; + } + ret = get_errno(do_sigaction(arg1, pact, &oact)); + if (!is_error(ret) && arg3) { + if (!lock_user_struct(VERIFY_WRITE, rt_act, arg3, 0)) + goto efault; + rt_act->_sa_handler = oact._sa_handler; + rt_act->sa_mask = oact.sa_mask; + rt_act->sa_flags = oact.sa_flags; + unlock_user_struct(rt_act, arg3, 1); + } +#else + struct target_sigaction *act; + struct target_sigaction *oact; + + if (arg2) { + if (!lock_user_struct(VERIFY_READ, act, arg2, 1)) + goto efault; + } else + act = NULL; + if (arg3) { + if (!lock_user_struct(VERIFY_WRITE, oact, arg3, 0)) { + ret = -TARGET_EFAULT; + goto rt_sigaction_fail; + } + } else + oact = NULL; + ret = get_errno(do_sigaction(arg1, act, oact)); + rt_sigaction_fail: + if (act) + unlock_user_struct(act, arg2, 0); + if (oact) + unlock_user_struct(oact, arg3, 1); +#endif + } + break; +#ifdef TARGET_NR_sgetmask /* not on alpha */ + case TARGET_NR_sgetmask: + { + sigset_t cur_set; + abi_ulong target_set; + do_sigprocmask(0, NULL, &cur_set); + host_to_target_old_sigset(&target_set, &cur_set); + ret = target_set; + } + break; +#endif +#ifdef TARGET_NR_ssetmask /* not on alpha */ + case TARGET_NR_ssetmask: + { + sigset_t set, oset, cur_set; + abi_ulong target_set = arg1; + do_sigprocmask(0, NULL, &cur_set); + target_to_host_old_sigset(&set, &target_set); + sigorset(&set, &set, &cur_set); + do_sigprocmask(SIG_SETMASK, &set, &oset); + host_to_target_old_sigset(&target_set, &oset); + ret = target_set; + } + break; +#endif +#ifdef TARGET_NR_sigprocmask + case TARGET_NR_sigprocmask: + { +#if defined(TARGET_ALPHA) + sigset_t set, oldset; + abi_ulong mask; + int how; + + switch (arg1) { + case TARGET_SIG_BLOCK: + how = SIG_BLOCK; + break; + case TARGET_SIG_UNBLOCK: + how = SIG_UNBLOCK; + break; + case TARGET_SIG_SETMASK: + how = SIG_SETMASK; + break; + default: + ret = -TARGET_EINVAL; + goto fail; + } + mask = arg2; + target_to_host_old_sigset(&set, &mask); + + ret = get_errno(do_sigprocmask(how, &set, &oldset)); + if (!is_error(ret)) { + host_to_target_old_sigset(&mask, &oldset); + ret = mask; + ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; /* force no error */ + } +#else + sigset_t set, oldset, *set_ptr; + int how; + + if (arg2) { + switch (arg1) { + case TARGET_SIG_BLOCK: + how = SIG_BLOCK; + break; + case TARGET_SIG_UNBLOCK: + how = SIG_UNBLOCK; + break; + case TARGET_SIG_SETMASK: + how = SIG_SETMASK; + break; + default: + ret = -TARGET_EINVAL; + goto fail; + } + if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) + goto efault; + target_to_host_old_sigset(&set, p); + unlock_user(p, arg2, 0); + set_ptr = &set; + } else { + how = 0; + set_ptr = NULL; + } + ret = get_errno(do_sigprocmask(how, set_ptr, &oldset)); + if (!is_error(ret) && arg3) { + if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) + goto efault; + host_to_target_old_sigset(p, &oldset); + unlock_user(p, arg3, sizeof(target_sigset_t)); + } +#endif + } + break; +#endif + case TARGET_NR_rt_sigprocmask: + { + int how = arg1; + sigset_t set, oldset, *set_ptr; + + if (arg2) { + switch(how) { + case TARGET_SIG_BLOCK: + how = SIG_BLOCK; + break; + case TARGET_SIG_UNBLOCK: + how = SIG_UNBLOCK; + break; + case TARGET_SIG_SETMASK: + how = SIG_SETMASK; + break; + default: + ret = -TARGET_EINVAL; + goto fail; + } + if (!(p = lock_user(VERIFY_READ, arg2, sizeof(target_sigset_t), 1))) + goto efault; + target_to_host_sigset(&set, p); + unlock_user(p, arg2, 0); + set_ptr = &set; + } else { + how = 0; + set_ptr = NULL; + } + ret = get_errno(do_sigprocmask(how, set_ptr, &oldset)); + if (!is_error(ret) && arg3) { + if (!(p = lock_user(VERIFY_WRITE, arg3, sizeof(target_sigset_t), 0))) + goto efault; + host_to_target_sigset(p, &oldset); + unlock_user(p, arg3, sizeof(target_sigset_t)); + } + } + break; +#ifdef TARGET_NR_sigpending + case TARGET_NR_sigpending: + { + sigset_t set; + ret = get_errno(sigpending(&set)); + if (!is_error(ret)) { + if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) + goto efault; + host_to_target_old_sigset(p, &set); + unlock_user(p, arg1, sizeof(target_sigset_t)); + } + } + break; +#endif + case TARGET_NR_rt_sigpending: + { + sigset_t set; + ret = get_errno(sigpending(&set)); + if (!is_error(ret)) { + if (!(p = lock_user(VERIFY_WRITE, arg1, sizeof(target_sigset_t), 0))) + goto efault; + host_to_target_sigset(p, &set); + unlock_user(p, arg1, sizeof(target_sigset_t)); + } + } + break; +#ifdef TARGET_NR_sigsuspend + case TARGET_NR_sigsuspend: + { + sigset_t set; +#if defined(TARGET_ALPHA) + abi_ulong mask = arg1; + target_to_host_old_sigset(&set, &mask); +#else + if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) + goto efault; + target_to_host_old_sigset(&set, p); + unlock_user(p, arg1, 0); +#endif + ret = get_errno(sigsuspend(&set)); + } + break; +#endif + case TARGET_NR_rt_sigsuspend: + { + sigset_t set; + if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) + goto efault; + target_to_host_sigset(&set, p); + unlock_user(p, arg1, 0); + ret = get_errno(sigsuspend(&set)); + } + break; + case TARGET_NR_rt_sigtimedwait: + { + sigset_t set; + struct timespec uts, *puts; + siginfo_t uinfo; + + if (!(p = lock_user(VERIFY_READ, arg1, sizeof(target_sigset_t), 1))) + goto efault; + target_to_host_sigset(&set, p); + unlock_user(p, arg1, 0); + if (arg3) { + puts = &uts; + target_to_host_timespec(puts, arg3); + } else { + puts = NULL; + } + ret = get_errno(sigtimedwait(&set, &uinfo, puts)); + if (!is_error(ret)) { + if (arg2) { + p = lock_user(VERIFY_WRITE, arg2, sizeof(target_siginfo_t), + 0); + if (!p) { + goto efault; + } + host_to_target_siginfo(p, &uinfo); + unlock_user(p, arg2, sizeof(target_siginfo_t)); + } + ret = host_to_target_signal(ret); + } + } + break; + case TARGET_NR_rt_sigqueueinfo: + { + siginfo_t uinfo; + if (!(p = lock_user(VERIFY_READ, arg3, sizeof(target_sigset_t), 1))) + goto efault; + target_to_host_siginfo(&uinfo, p); + unlock_user(p, arg1, 0); + ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo)); + } + break; +#ifdef TARGET_NR_sigreturn + case TARGET_NR_sigreturn: + /* NOTE: ret is eax, so not transcoding must be done */ + ret = do_sigreturn(cpu_env); + break; +#endif + case TARGET_NR_rt_sigreturn: + /* NOTE: ret is eax, so not transcoding must be done */ + ret = do_rt_sigreturn(cpu_env); + break; + case TARGET_NR_sethostname: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(sethostname(p, arg2)); + unlock_user(p, arg1, 0); + break; + case TARGET_NR_setrlimit: + { + int resource = target_to_host_resource(arg1); + struct target_rlimit *target_rlim; + struct rlimit rlim; + if (!lock_user_struct(VERIFY_READ, target_rlim, arg2, 1)) + goto efault; + rlim.rlim_cur = target_to_host_rlim(target_rlim->rlim_cur); + rlim.rlim_max = target_to_host_rlim(target_rlim->rlim_max); + unlock_user_struct(target_rlim, arg2, 0); + ret = get_errno(setrlimit(resource, &rlim)); + } + break; + case TARGET_NR_getrlimit: + { + int resource = target_to_host_resource(arg1); + struct target_rlimit *target_rlim; + struct rlimit rlim; + + ret = get_errno(getrlimit(resource, &rlim)); + if (!is_error(ret)) { + if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) + goto efault; + target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); + target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); + unlock_user_struct(target_rlim, arg2, 1); + } + } + break; + case TARGET_NR_getrusage: + { + struct rusage rusage; + ret = get_errno(getrusage(arg1, &rusage)); + if (!is_error(ret)) { + ret = host_to_target_rusage(arg2, &rusage); + } + } + break; + case TARGET_NR_gettimeofday: + { + struct timeval tv; + ret = get_errno(gettimeofday(&tv, NULL)); + if (!is_error(ret)) { + if (copy_to_user_timeval(arg1, &tv)) + goto efault; + } + } + break; + case TARGET_NR_settimeofday: + { + struct timeval tv, *ptv = NULL; + struct timezone tz, *ptz = NULL; + + if (arg1) { + if (copy_from_user_timeval(&tv, arg1)) { + goto efault; + } + ptv = &tv; + } + + if (arg2) { + if (copy_from_user_timezone(&tz, arg2)) { + goto efault; + } + ptz = &tz; + } + + ret = get_errno(settimeofday(ptv, ptz)); + } + break; +#if defined(TARGET_NR_select) + case TARGET_NR_select: +#if defined(TARGET_S390X) || defined(TARGET_ALPHA) + ret = do_select(arg1, arg2, arg3, arg4, arg5); +#else + { + struct target_sel_arg_struct *sel; + abi_ulong inp, outp, exp, tvp; + long nsel; + + if (!lock_user_struct(VERIFY_READ, sel, arg1, 1)) + goto efault; + nsel = tswapal(sel->n); + inp = tswapal(sel->inp); + outp = tswapal(sel->outp); + exp = tswapal(sel->exp); + tvp = tswapal(sel->tvp); + unlock_user_struct(sel, arg1, 0); + ret = do_select(nsel, inp, outp, exp, tvp); + } +#endif + break; +#endif +#ifdef TARGET_NR_pselect6 + case TARGET_NR_pselect6: + { + abi_long rfd_addr, wfd_addr, efd_addr, n, ts_addr; + fd_set rfds, wfds, efds; + fd_set *rfds_ptr, *wfds_ptr, *efds_ptr; + struct timespec ts, *ts_ptr; + + /* + * The 6th arg is actually two args smashed together, + * so we cannot use the C library. + */ + sigset_t set; + struct { + sigset_t *set; + size_t size; + } sig, *sig_ptr; + + abi_ulong arg_sigset, arg_sigsize, *arg7; + target_sigset_t *target_sigset; + + n = arg1; + rfd_addr = arg2; + wfd_addr = arg3; + efd_addr = arg4; + ts_addr = arg5; + + ret = copy_from_user_fdset_ptr(&rfds, &rfds_ptr, rfd_addr, n); + if (ret) { + goto fail; + } + ret = copy_from_user_fdset_ptr(&wfds, &wfds_ptr, wfd_addr, n); + if (ret) { + goto fail; + } + ret = copy_from_user_fdset_ptr(&efds, &efds_ptr, efd_addr, n); + if (ret) { + goto fail; + } + + /* + * This takes a timespec, and not a timeval, so we cannot + * use the do_select() helper ... + */ + if (ts_addr) { + if (target_to_host_timespec(&ts, ts_addr)) { + goto efault; + } + ts_ptr = &ts; + } else { + ts_ptr = NULL; + } + + /* Extract the two packed args for the sigset */ + if (arg6) { + sig_ptr = &sig; + sig.size = _NSIG / 8; + + arg7 = lock_user(VERIFY_READ, arg6, sizeof(*arg7) * 2, 1); + if (!arg7) { + goto efault; + } + arg_sigset = tswapal(arg7[0]); + arg_sigsize = tswapal(arg7[1]); + unlock_user(arg7, arg6, 0); + + if (arg_sigset) { + sig.set = &set; + if (arg_sigsize != sizeof(*target_sigset)) { + /* Like the kernel, we enforce correct size sigsets */ + ret = -TARGET_EINVAL; + goto fail; + } + target_sigset = lock_user(VERIFY_READ, arg_sigset, + sizeof(*target_sigset), 1); + if (!target_sigset) { + goto efault; + } + target_to_host_sigset(&set, target_sigset); + unlock_user(target_sigset, arg_sigset, 0); + } else { + sig.set = NULL; + } + } else { + sig_ptr = NULL; + } + + ret = get_errno(sys_pselect6(n, rfds_ptr, wfds_ptr, efds_ptr, + ts_ptr, sig_ptr)); + + if (!is_error(ret)) { + if (rfd_addr && copy_to_user_fdset(rfd_addr, &rfds, n)) + goto efault; + if (wfd_addr && copy_to_user_fdset(wfd_addr, &wfds, n)) + goto efault; + if (efd_addr && copy_to_user_fdset(efd_addr, &efds, n)) + goto efault; + + if (ts_addr && host_to_target_timespec(ts_addr, &ts)) + goto efault; + } + } + break; +#endif + case TARGET_NR_symlink: + { + void *p2; + p = lock_user_string(arg1); + p2 = lock_user_string(arg2); + if (!p || !p2) + ret = -TARGET_EFAULT; + else + ret = get_errno(symlink(p, p2)); + unlock_user(p2, arg2, 0); + unlock_user(p, arg1, 0); + } + break; +#if defined(TARGET_NR_symlinkat) + case TARGET_NR_symlinkat: + { + void *p2; + p = lock_user_string(arg1); + p2 = lock_user_string(arg3); + if (!p || !p2) + ret = -TARGET_EFAULT; + else + ret = get_errno(symlinkat(p, arg2, p2)); + unlock_user(p2, arg3, 0); + unlock_user(p, arg1, 0); + } + break; +#endif +#ifdef TARGET_NR_oldlstat + case TARGET_NR_oldlstat: + goto unimplemented; +#endif + case TARGET_NR_readlink: + { + void *p2; + p = lock_user_string(arg1); + p2 = lock_user(VERIFY_WRITE, arg2, arg3, 0); + if (!p || !p2) { + ret = -TARGET_EFAULT; + } else if (!arg3) { + /* Short circuit this for the magic exe check. */ + ret = -TARGET_EINVAL; + } else if (is_proc_myself((const char *)p, "exe")) { + char real[PATH_MAX], *temp; + temp = realpath(exec_path, real); + /* Return value is # of bytes that we wrote to the buffer. */ + if (temp == NULL) { + ret = get_errno(-1); + } else { + /* Don't worry about sign mismatch as earlier mapping + * logic would have thrown a bad address error. */ + ret = MIN(strlen(real), arg3); + /* We cannot NUL terminate the string. */ + memcpy(p2, real, ret); + } + } else { + ret = get_errno(readlink(path(p), p2, arg3)); + } + unlock_user(p2, arg2, ret); + unlock_user(p, arg1, 0); + } + break; +#if defined(TARGET_NR_readlinkat) + case TARGET_NR_readlinkat: + { + void *p2; + p = lock_user_string(arg2); + p2 = lock_user(VERIFY_WRITE, arg3, arg4, 0); + if (!p || !p2) { + ret = -TARGET_EFAULT; + } else if (is_proc_myself((const char *)p, "exe")) { + char real[PATH_MAX], *temp; + temp = realpath(exec_path, real); + ret = temp == NULL ? get_errno(-1) : strlen(real) ; + snprintf((char *)p2, arg4, "%s", real); + } else { + ret = get_errno(readlinkat(arg1, path(p), p2, arg4)); + } + unlock_user(p2, arg3, ret); + unlock_user(p, arg2, 0); + } + break; +#endif +#ifdef TARGET_NR_uselib + case TARGET_NR_uselib: + goto unimplemented; +#endif +#ifdef TARGET_NR_swapon + case TARGET_NR_swapon: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(swapon(p, arg2)); + unlock_user(p, arg1, 0); + break; +#endif + case TARGET_NR_reboot: + if (arg3 == LINUX_REBOOT_CMD_RESTART2) { + /* arg4 must be ignored in all other cases */ + p = lock_user_string(arg4); + if (!p) { + goto efault; + } + ret = get_errno(reboot(arg1, arg2, arg3, p)); + unlock_user(p, arg4, 0); + } else { + ret = get_errno(reboot(arg1, arg2, arg3, NULL)); + } + break; +#ifdef TARGET_NR_readdir + case TARGET_NR_readdir: + goto unimplemented; +#endif +#ifdef TARGET_NR_mmap + case TARGET_NR_mmap: +#if (defined(TARGET_I386) && defined(TARGET_ABI32)) || \ + (defined(TARGET_ARM) && defined(TARGET_ABI32)) || \ + defined(TARGET_M68K) || defined(TARGET_CRIS) || defined(TARGET_MICROBLAZE) \ + || defined(TARGET_S390X) + { + abi_ulong *v; + abi_ulong v1, v2, v3, v4, v5, v6; + if (!(v = lock_user(VERIFY_READ, arg1, 6 * sizeof(abi_ulong), 1))) + goto efault; + v1 = tswapal(v[0]); + v2 = tswapal(v[1]); + v3 = tswapal(v[2]); + v4 = tswapal(v[3]); + v5 = tswapal(v[4]); + v6 = tswapal(v[5]); + unlock_user(v, arg1, 0); + ret = get_errno(target_mmap(v1, v2, v3, + target_to_host_bitmask(v4, mmap_flags_tbl), + v5, v6)); + } +#else + ret = get_errno(target_mmap(arg1, arg2, arg3, + target_to_host_bitmask(arg4, mmap_flags_tbl), + arg5, + arg6)); +#endif + break; +#endif +#ifdef TARGET_NR_mmap2 + case TARGET_NR_mmap2: +#ifndef MMAP_SHIFT +#define MMAP_SHIFT 12 +#endif + ret = get_errno(target_mmap(arg1, arg2, arg3, + target_to_host_bitmask(arg4, mmap_flags_tbl), + arg5, + arg6 << MMAP_SHIFT)); + break; +#endif + case TARGET_NR_munmap: + ret = get_errno(target_munmap(arg1, arg2)); + break; + case TARGET_NR_mprotect: + { + TaskState *ts = cpu->opaque; + /* Special hack to detect libc making the stack executable. */ + if ((arg3 & PROT_GROWSDOWN) + && arg1 >= ts->info->stack_limit + && arg1 <= ts->info->start_stack) { + arg3 &= ~PROT_GROWSDOWN; + arg2 = arg2 + arg1 - ts->info->stack_limit; + arg1 = ts->info->stack_limit; + } + } + ret = get_errno(target_mprotect(arg1, arg2, arg3)); + break; +#ifdef TARGET_NR_mremap + case TARGET_NR_mremap: + ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5)); + break; +#endif + /* ??? msync/mlock/munlock are broken for softmmu. */ +#ifdef TARGET_NR_msync + case TARGET_NR_msync: + ret = get_errno(msync(g2h(arg1), arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_mlock + case TARGET_NR_mlock: + ret = get_errno(mlock(g2h(arg1), arg2)); + break; +#endif +#ifdef TARGET_NR_munlock + case TARGET_NR_munlock: + ret = get_errno(munlock(g2h(arg1), arg2)); + break; +#endif +#ifdef TARGET_NR_mlockall + case TARGET_NR_mlockall: + ret = get_errno(mlockall(target_to_host_mlockall_arg(arg1))); + break; +#endif +#ifdef TARGET_NR_munlockall + case TARGET_NR_munlockall: + ret = get_errno(munlockall()); + break; +#endif + case TARGET_NR_truncate: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(truncate(p, arg2)); + unlock_user(p, arg1, 0); + break; + case TARGET_NR_ftruncate: + ret = get_errno(ftruncate(arg1, arg2)); + break; + case TARGET_NR_fchmod: + ret = get_errno(fchmod(arg1, arg2)); + break; +#if defined(TARGET_NR_fchmodat) + case TARGET_NR_fchmodat: + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(fchmodat(arg1, p, arg3, 0)); + unlock_user(p, arg2, 0); + break; +#endif + case TARGET_NR_getpriority: + /* Note that negative values are valid for getpriority, so we must + differentiate based on errno settings. */ + errno = 0; + ret = getpriority(arg1, arg2); + if (ret == -1 && errno != 0) { + ret = -host_to_target_errno(errno); + break; + } +#ifdef TARGET_ALPHA + /* Return value is the unbiased priority. Signal no error. */ + ((CPUAlphaState *)cpu_env)->ir[IR_V0] = 0; +#else + /* Return value is a biased priority to avoid negative numbers. */ + ret = 20 - ret; +#endif + break; + case TARGET_NR_setpriority: + ret = get_errno(setpriority(arg1, arg2, arg3)); + break; +#ifdef TARGET_NR_profil + case TARGET_NR_profil: + goto unimplemented; +#endif + case TARGET_NR_statfs: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(statfs(path(p), &stfs)); + unlock_user(p, arg1, 0); + convert_statfs: + if (!is_error(ret)) { + struct target_statfs *target_stfs; + + if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg2, 0)) + goto efault; + __put_user(stfs.f_type, &target_stfs->f_type); + __put_user(stfs.f_bsize, &target_stfs->f_bsize); + __put_user(stfs.f_blocks, &target_stfs->f_blocks); + __put_user(stfs.f_bfree, &target_stfs->f_bfree); + __put_user(stfs.f_bavail, &target_stfs->f_bavail); + __put_user(stfs.f_files, &target_stfs->f_files); + __put_user(stfs.f_ffree, &target_stfs->f_ffree); + __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); + __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); + __put_user(stfs.f_namelen, &target_stfs->f_namelen); + __put_user(stfs.f_frsize, &target_stfs->f_frsize); + memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); + unlock_user_struct(target_stfs, arg2, 1); + } + break; + case TARGET_NR_fstatfs: + ret = get_errno(fstatfs(arg1, &stfs)); + goto convert_statfs; +#ifdef TARGET_NR_statfs64 + case TARGET_NR_statfs64: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(statfs(path(p), &stfs)); + unlock_user(p, arg1, 0); + convert_statfs64: + if (!is_error(ret)) { + struct target_statfs64 *target_stfs; + + if (!lock_user_struct(VERIFY_WRITE, target_stfs, arg3, 0)) + goto efault; + __put_user(stfs.f_type, &target_stfs->f_type); + __put_user(stfs.f_bsize, &target_stfs->f_bsize); + __put_user(stfs.f_blocks, &target_stfs->f_blocks); + __put_user(stfs.f_bfree, &target_stfs->f_bfree); + __put_user(stfs.f_bavail, &target_stfs->f_bavail); + __put_user(stfs.f_files, &target_stfs->f_files); + __put_user(stfs.f_ffree, &target_stfs->f_ffree); + __put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]); + __put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]); + __put_user(stfs.f_namelen, &target_stfs->f_namelen); + __put_user(stfs.f_frsize, &target_stfs->f_frsize); + memset(target_stfs->f_spare, 0, sizeof(target_stfs->f_spare)); + unlock_user_struct(target_stfs, arg3, 1); + } + break; + case TARGET_NR_fstatfs64: + ret = get_errno(fstatfs(arg1, &stfs)); + goto convert_statfs64; +#endif +#ifdef TARGET_NR_ioperm + case TARGET_NR_ioperm: + goto unimplemented; +#endif +#ifdef TARGET_NR_socketcall + case TARGET_NR_socketcall: + ret = do_socketcall(arg1, arg2); + break; +#endif +#ifdef TARGET_NR_accept + case TARGET_NR_accept: + ret = do_accept4(arg1, arg2, arg3, 0); + break; +#endif +#ifdef TARGET_NR_accept4 + case TARGET_NR_accept4: +#ifdef CONFIG_ACCEPT4 + ret = do_accept4(arg1, arg2, arg3, arg4); +#else + goto unimplemented; +#endif + break; +#endif +#ifdef TARGET_NR_bind + case TARGET_NR_bind: + ret = do_bind(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_connect + case TARGET_NR_connect: + ret = do_connect(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_getpeername + case TARGET_NR_getpeername: + ret = do_getpeername(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_getsockname + case TARGET_NR_getsockname: + ret = do_getsockname(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_getsockopt + case TARGET_NR_getsockopt: + ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5); + break; +#endif +#ifdef TARGET_NR_listen + case TARGET_NR_listen: + ret = get_errno(listen(arg1, arg2)); + break; +#endif +#ifdef TARGET_NR_recv + case TARGET_NR_recv: + ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0); + break; +#endif +#ifdef TARGET_NR_recvfrom + case TARGET_NR_recvfrom: + ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6); + break; +#endif +#ifdef TARGET_NR_recvmsg + case TARGET_NR_recvmsg: + ret = do_sendrecvmsg(arg1, arg2, arg3, 0); + break; +#endif +#ifdef TARGET_NR_send + case TARGET_NR_send: + ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0); + break; +#endif +#ifdef TARGET_NR_sendmsg + case TARGET_NR_sendmsg: + ret = do_sendrecvmsg(arg1, arg2, arg3, 1); + break; +#endif +#ifdef TARGET_NR_sendmmsg + case TARGET_NR_sendmmsg: + ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 1); + break; + case TARGET_NR_recvmmsg: + ret = do_sendrecvmmsg(arg1, arg2, arg3, arg4, 0); + break; +#endif +#ifdef TARGET_NR_sendto + case TARGET_NR_sendto: + ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6); + break; +#endif +#ifdef TARGET_NR_shutdown + case TARGET_NR_shutdown: + ret = get_errno(shutdown(arg1, arg2)); + break; +#endif +#ifdef TARGET_NR_socket + case TARGET_NR_socket: + ret = do_socket(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_socketpair + case TARGET_NR_socketpair: + ret = do_socketpair(arg1, arg2, arg3, arg4); + break; +#endif +#ifdef TARGET_NR_setsockopt + case TARGET_NR_setsockopt: + ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5); + break; +#endif + + case TARGET_NR_syslog: + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(sys_syslog((int)arg1, p, (int)arg3)); + unlock_user(p, arg2, 0); + break; + + case TARGET_NR_setitimer: + { + struct itimerval value, ovalue, *pvalue; + + if (arg2) { + pvalue = &value; + if (copy_from_user_timeval(&pvalue->it_interval, arg2) + || copy_from_user_timeval(&pvalue->it_value, + arg2 + sizeof(struct target_timeval))) + goto efault; + } else { + pvalue = NULL; + } + ret = get_errno(setitimer(arg1, pvalue, &ovalue)); + if (!is_error(ret) && arg3) { + if (copy_to_user_timeval(arg3, + &ovalue.it_interval) + || copy_to_user_timeval(arg3 + sizeof(struct target_timeval), + &ovalue.it_value)) + goto efault; + } + } + break; + case TARGET_NR_getitimer: + { + struct itimerval value; + + ret = get_errno(getitimer(arg1, &value)); + if (!is_error(ret) && arg2) { + if (copy_to_user_timeval(arg2, + &value.it_interval) + || copy_to_user_timeval(arg2 + sizeof(struct target_timeval), + &value.it_value)) + goto efault; + } + } + break; + case TARGET_NR_stat: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(stat(path(p), &st)); + unlock_user(p, arg1, 0); + goto do_stat; + case TARGET_NR_lstat: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(lstat(path(p), &st)); + unlock_user(p, arg1, 0); + goto do_stat; + case TARGET_NR_fstat: + { + ret = get_errno(fstat(arg1, &st)); + do_stat: + if (!is_error(ret)) { + struct target_stat *target_st; + + if (!lock_user_struct(VERIFY_WRITE, target_st, arg2, 0)) + goto efault; + memset(target_st, 0, sizeof(*target_st)); + __put_user(st.st_dev, &target_st->st_dev); + __put_user(st.st_ino, &target_st->st_ino); + __put_user(st.st_mode, &target_st->st_mode); + __put_user(st.st_uid, &target_st->st_uid); + __put_user(st.st_gid, &target_st->st_gid); + __put_user(st.st_nlink, &target_st->st_nlink); + __put_user(st.st_rdev, &target_st->st_rdev); + __put_user(st.st_size, &target_st->st_size); + __put_user(st.st_blksize, &target_st->st_blksize); + __put_user(st.st_blocks, &target_st->st_blocks); + __put_user(st.st_atime, &target_st->target_st_atime); + __put_user(st.st_mtime, &target_st->target_st_mtime); + __put_user(st.st_ctime, &target_st->target_st_ctime); + unlock_user_struct(target_st, arg2, 1); + } + } + break; +#ifdef TARGET_NR_olduname + case TARGET_NR_olduname: + goto unimplemented; +#endif +#ifdef TARGET_NR_iopl + case TARGET_NR_iopl: + goto unimplemented; +#endif + case TARGET_NR_vhangup: + ret = get_errno(vhangup()); + break; +#ifdef TARGET_NR_idle + case TARGET_NR_idle: + goto unimplemented; +#endif +#ifdef TARGET_NR_syscall + case TARGET_NR_syscall: + ret = do_syscall(cpu_env, arg1 & 0xffff, arg2, arg3, arg4, arg5, + arg6, arg7, arg8, 0); + break; +#endif + case TARGET_NR_wait4: + { + int status; + abi_long status_ptr = arg2; + struct rusage rusage, *rusage_ptr; + abi_ulong target_rusage = arg4; + abi_long rusage_err; + if (target_rusage) + rusage_ptr = &rusage; + else + rusage_ptr = NULL; + ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr)); + if (!is_error(ret)) { + if (status_ptr && ret) { + status = host_to_target_waitstatus(status); + if (put_user_s32(status, status_ptr)) + goto efault; + } + if (target_rusage) { + rusage_err = host_to_target_rusage(target_rusage, &rusage); + if (rusage_err) { + ret = rusage_err; + } + } + } + } + break; +#ifdef TARGET_NR_swapoff + case TARGET_NR_swapoff: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(swapoff(p)); + unlock_user(p, arg1, 0); + break; +#endif + case TARGET_NR_sysinfo: + { + struct target_sysinfo *target_value; + struct sysinfo value; + ret = get_errno(sysinfo(&value)); + if (!is_error(ret) && arg1) + { + if (!lock_user_struct(VERIFY_WRITE, target_value, arg1, 0)) + goto efault; + __put_user(value.uptime, &target_value->uptime); + __put_user(value.loads[0], &target_value->loads[0]); + __put_user(value.loads[1], &target_value->loads[1]); + __put_user(value.loads[2], &target_value->loads[2]); + __put_user(value.totalram, &target_value->totalram); + __put_user(value.freeram, &target_value->freeram); + __put_user(value.sharedram, &target_value->sharedram); + __put_user(value.bufferram, &target_value->bufferram); + __put_user(value.totalswap, &target_value->totalswap); + __put_user(value.freeswap, &target_value->freeswap); + __put_user(value.procs, &target_value->procs); + __put_user(value.totalhigh, &target_value->totalhigh); + __put_user(value.freehigh, &target_value->freehigh); + __put_user(value.mem_unit, &target_value->mem_unit); + unlock_user_struct(target_value, arg1, 1); + } + } + break; +#ifdef TARGET_NR_ipc + case TARGET_NR_ipc: + ret = do_ipc(arg1, arg2, arg3, arg4, arg5, arg6); + break; +#endif +#ifdef TARGET_NR_semget + case TARGET_NR_semget: + ret = get_errno(semget(arg1, arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_semop + case TARGET_NR_semop: + ret = do_semop(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_semctl + case TARGET_NR_semctl: + ret = do_semctl(arg1, arg2, arg3, (union target_semun)(abi_ulong)arg4); + break; +#endif +#ifdef TARGET_NR_msgctl + case TARGET_NR_msgctl: + ret = do_msgctl(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_msgget + case TARGET_NR_msgget: + ret = get_errno(msgget(arg1, arg2)); + break; +#endif +#ifdef TARGET_NR_msgrcv + case TARGET_NR_msgrcv: + ret = do_msgrcv(arg1, arg2, arg3, arg4, arg5); + break; +#endif +#ifdef TARGET_NR_msgsnd + case TARGET_NR_msgsnd: + ret = do_msgsnd(arg1, arg2, arg3, arg4); + break; +#endif +#ifdef TARGET_NR_shmget + case TARGET_NR_shmget: + ret = get_errno(shmget(arg1, arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_shmctl + case TARGET_NR_shmctl: + ret = do_shmctl(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_shmat + case TARGET_NR_shmat: + ret = do_shmat(arg1, arg2, arg3); + break; +#endif +#ifdef TARGET_NR_shmdt + case TARGET_NR_shmdt: + ret = do_shmdt(arg1); + break; +#endif + case TARGET_NR_fsync: + ret = get_errno(fsync(arg1)); + break; + case TARGET_NR_clone: + /* Linux manages to have three different orderings for its + * arguments to clone(); the BACKWARDS and BACKWARDS2 defines + * match the kernel's CONFIG_CLONE_* settings. + * Microblaze is further special in that it uses a sixth + * implicit argument to clone for the TLS pointer. + */ +#if defined(TARGET_MICROBLAZE) + ret = get_errno(do_fork(cpu_env, arg1, arg2, arg4, arg6, arg5)); +#elif defined(TARGET_CLONE_BACKWARDS) + ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg4, arg5)); +#elif defined(TARGET_CLONE_BACKWARDS2) + ret = get_errno(do_fork(cpu_env, arg2, arg1, arg3, arg5, arg4)); +#else + ret = get_errno(do_fork(cpu_env, arg1, arg2, arg3, arg5, arg4)); +#endif + break; +#ifdef __NR_exit_group + /* new thread calls */ + case TARGET_NR_exit_group: +#ifdef TARGET_GPROF + _mcleanup(); +#endif + gdb_exit(cpu_env, arg1); + ret = get_errno(exit_group(arg1)); + break; +#endif + case TARGET_NR_setdomainname: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(setdomainname(p, arg2)); + unlock_user(p, arg1, 0); + break; + case TARGET_NR_uname: + /* no need to transcode because we use the linux syscall */ + { + struct new_utsname * buf; + + if (!lock_user_struct(VERIFY_WRITE, buf, arg1, 0)) + goto efault; + ret = get_errno(sys_uname(buf)); + if (!is_error(ret)) { + /* Overrite the native machine name with whatever is being + emulated. */ + strcpy (buf->machine, cpu_to_uname_machine(cpu_env)); + /* Allow the user to override the reported release. */ + if (qemu_uname_release && *qemu_uname_release) + strcpy (buf->release, qemu_uname_release); + } + unlock_user_struct(buf, arg1, 1); + } + break; +#ifdef TARGET_I386 + case TARGET_NR_modify_ldt: + ret = do_modify_ldt(cpu_env, arg1, arg2, arg3); + break; +#if !defined(TARGET_X86_64) + case TARGET_NR_vm86old: + goto unimplemented; + case TARGET_NR_vm86: + ret = do_vm86(cpu_env, arg1, arg2); + break; +#endif +#endif + case TARGET_NR_adjtimex: + goto unimplemented; +#ifdef TARGET_NR_create_module + case TARGET_NR_create_module: +#endif + case TARGET_NR_init_module: + case TARGET_NR_delete_module: +#ifdef TARGET_NR_get_kernel_syms + case TARGET_NR_get_kernel_syms: +#endif + goto unimplemented; + case TARGET_NR_quotactl: + goto unimplemented; + case TARGET_NR_getpgid: + ret = get_errno(getpgid(arg1)); + break; + case TARGET_NR_fchdir: + ret = get_errno(fchdir(arg1)); + break; +#ifdef TARGET_NR_bdflush /* not on x86_64 */ + case TARGET_NR_bdflush: + goto unimplemented; +#endif +#ifdef TARGET_NR_sysfs + case TARGET_NR_sysfs: + goto unimplemented; +#endif + case TARGET_NR_personality: + ret = get_errno(personality(arg1)); + break; +#ifdef TARGET_NR_afs_syscall + case TARGET_NR_afs_syscall: + goto unimplemented; +#endif +#ifdef TARGET_NR__llseek /* Not on alpha */ + case TARGET_NR__llseek: + { + int64_t res; +#if !defined(__NR_llseek) + res = lseek(arg1, ((uint64_t)arg2 << 32) | arg3, arg5); + if (res == -1) { + ret = get_errno(res); + } else { + ret = 0; + } +#else + ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5)); +#endif + if ((ret == 0) && put_user_s64(res, arg4)) { + goto efault; + } + } + break; +#endif + case TARGET_NR_getdents: +#ifdef __NR_getdents +#if TARGET_ABI_BITS == 32 && HOST_LONG_BITS == 64 + { + struct target_dirent *target_dirp; + struct linux_dirent *dirp; + abi_long count = arg3; + + dirp = malloc(count); + if (!dirp) { + ret = -TARGET_ENOMEM; + goto fail; + } + + ret = get_errno(sys_getdents(arg1, dirp, count)); + if (!is_error(ret)) { + struct linux_dirent *de; + struct target_dirent *tde; + int len = ret; + int reclen, treclen; + int count1, tnamelen; + + count1 = 0; + de = dirp; + if (!(target_dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) + goto efault; + tde = target_dirp; + while (len > 0) { + reclen = de->d_reclen; + tnamelen = reclen - offsetof(struct linux_dirent, d_name); + assert(tnamelen >= 0); + treclen = tnamelen + offsetof(struct target_dirent, d_name); + assert(count1 + treclen <= count); + tde->d_reclen = tswap16(treclen); + tde->d_ino = tswapal(de->d_ino); + tde->d_off = tswapal(de->d_off); + memcpy(tde->d_name, de->d_name, tnamelen); + de = (struct linux_dirent *)((char *)de + reclen); + len -= reclen; + tde = (struct target_dirent *)((char *)tde + treclen); + count1 += treclen; + } + ret = count1; + unlock_user(target_dirp, arg2, ret); + } + free(dirp); + } +#else + { + struct linux_dirent *dirp; + abi_long count = arg3; + + if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) + goto efault; + ret = get_errno(sys_getdents(arg1, dirp, count)); + if (!is_error(ret)) { + struct linux_dirent *de; + int len = ret; + int reclen; + de = dirp; + while (len > 0) { + reclen = de->d_reclen; + if (reclen > len) + break; + de->d_reclen = tswap16(reclen); + tswapls(&de->d_ino); + tswapls(&de->d_off); + de = (struct linux_dirent *)((char *)de + reclen); + len -= reclen; + } + } + unlock_user(dirp, arg2, ret); + } +#endif +#else + /* Implement getdents in terms of getdents64 */ + { + struct linux_dirent64 *dirp; + abi_long count = arg3; + + dirp = lock_user(VERIFY_WRITE, arg2, count, 0); + if (!dirp) { + goto efault; + } + ret = get_errno(sys_getdents64(arg1, dirp, count)); + if (!is_error(ret)) { + /* Convert the dirent64 structs to target dirent. We do this + * in-place, since we can guarantee that a target_dirent is no + * larger than a dirent64; however this means we have to be + * careful to read everything before writing in the new format. + */ + struct linux_dirent64 *de; + struct target_dirent *tde; + int len = ret; + int tlen = 0; + + de = dirp; + tde = (struct target_dirent *)dirp; + while (len > 0) { + int namelen, treclen; + int reclen = de->d_reclen; + uint64_t ino = de->d_ino; + int64_t off = de->d_off; + uint8_t type = de->d_type; + + namelen = strlen(de->d_name); + treclen = offsetof(struct target_dirent, d_name) + + namelen + 2; + treclen = QEMU_ALIGN_UP(treclen, sizeof(abi_long)); + + memmove(tde->d_name, de->d_name, namelen + 1); + tde->d_ino = tswapal(ino); + tde->d_off = tswapal(off); + tde->d_reclen = tswap16(treclen); + /* The target_dirent type is in what was formerly a padding + * byte at the end of the structure: + */ + *(((char *)tde) + treclen - 1) = type; + + de = (struct linux_dirent64 *)((char *)de + reclen); + tde = (struct target_dirent *)((char *)tde + treclen); + len -= reclen; + tlen += treclen; + } + ret = tlen; + } + unlock_user(dirp, arg2, ret); + } +#endif + break; +#if defined(TARGET_NR_getdents64) && defined(__NR_getdents64) + case TARGET_NR_getdents64: + { + struct linux_dirent64 *dirp; + abi_long count = arg3; + if (!(dirp = lock_user(VERIFY_WRITE, arg2, count, 0))) + goto efault; + ret = get_errno(sys_getdents64(arg1, dirp, count)); + if (!is_error(ret)) { + struct linux_dirent64 *de; + int len = ret; + int reclen; + de = dirp; + while (len > 0) { + reclen = de->d_reclen; + if (reclen > len) + break; + de->d_reclen = tswap16(reclen); + tswap64s((uint64_t *)&de->d_ino); + tswap64s((uint64_t *)&de->d_off); + de = (struct linux_dirent64 *)((char *)de + reclen); + len -= reclen; + } + } + unlock_user(dirp, arg2, ret); + } + break; +#endif /* TARGET_NR_getdents64 */ +#if defined(TARGET_NR__newselect) + case TARGET_NR__newselect: + ret = do_select(arg1, arg2, arg3, arg4, arg5); + break; +#endif +#if defined(TARGET_NR_poll) || defined(TARGET_NR_ppoll) +# ifdef TARGET_NR_poll + case TARGET_NR_poll: +# endif +# ifdef TARGET_NR_ppoll + case TARGET_NR_ppoll: +# endif + { + struct target_pollfd *target_pfd; + unsigned int nfds = arg2; + int timeout = arg3; + struct pollfd *pfd; + unsigned int i; + + target_pfd = lock_user(VERIFY_WRITE, arg1, sizeof(struct target_pollfd) * nfds, 1); + if (!target_pfd) + goto efault; + + pfd = alloca(sizeof(struct pollfd) * nfds); + for(i = 0; i < nfds; i++) { + pfd[i].fd = tswap32(target_pfd[i].fd); + pfd[i].events = tswap16(target_pfd[i].events); + } + +# ifdef TARGET_NR_ppoll + if (num == TARGET_NR_ppoll) { + struct timespec _timeout_ts, *timeout_ts = &_timeout_ts; + target_sigset_t *target_set; + sigset_t _set, *set = &_set; + + if (arg3) { + if (target_to_host_timespec(timeout_ts, arg3)) { + unlock_user(target_pfd, arg1, 0); + goto efault; + } + } else { + timeout_ts = NULL; + } + + if (arg4) { + target_set = lock_user(VERIFY_READ, arg4, sizeof(target_sigset_t), 1); + if (!target_set) { + unlock_user(target_pfd, arg1, 0); + goto efault; + } + target_to_host_sigset(set, target_set); + } else { + set = NULL; + } + + ret = get_errno(sys_ppoll(pfd, nfds, timeout_ts, set, _NSIG/8)); + + if (!is_error(ret) && arg3) { + host_to_target_timespec(arg3, timeout_ts); + } + if (arg4) { + unlock_user(target_set, arg4, 0); + } + } else +# endif + ret = get_errno(poll(pfd, nfds, timeout)); + + if (!is_error(ret)) { + for(i = 0; i < nfds; i++) { + target_pfd[i].revents = tswap16(pfd[i].revents); + } + } + unlock_user(target_pfd, arg1, sizeof(struct target_pollfd) * nfds); + } + break; +#endif + case TARGET_NR_flock: + /* NOTE: the flock constant seems to be the same for every + Linux platform */ + ret = get_errno(flock(arg1, arg2)); + break; + case TARGET_NR_readv: + { + struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); + if (vec != NULL) { + ret = get_errno(readv(arg1, vec, arg3)); + unlock_iovec(vec, arg2, arg3, 1); + } else { + ret = -host_to_target_errno(errno); + } + } + break; + case TARGET_NR_writev: + { + struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); + if (vec != NULL) { + ret = get_errno(writev(arg1, vec, arg3)); + unlock_iovec(vec, arg2, arg3, 0); + } else { + ret = -host_to_target_errno(errno); + } + } + break; + case TARGET_NR_getsid: + ret = get_errno(getsid(arg1)); + break; +#if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */ + case TARGET_NR_fdatasync: + ret = get_errno(fdatasync(arg1)); + break; +#endif + case TARGET_NR__sysctl: + /* We don't implement this, but ENOTDIR is always a safe + return value. */ + ret = -TARGET_ENOTDIR; + break; + case TARGET_NR_sched_getaffinity: + { + unsigned int mask_size; + unsigned long *mask; + + /* + * sched_getaffinity needs multiples of ulong, so need to take + * care of mismatches between target ulong and host ulong sizes. + */ + if (arg2 & (sizeof(abi_ulong) - 1)) { + ret = -TARGET_EINVAL; + break; + } + mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); + + mask = alloca(mask_size); + ret = get_errno(sys_sched_getaffinity(arg1, mask_size, mask)); + + if (!is_error(ret)) { + if (ret > arg2) { + /* More data returned than the caller's buffer will fit. + * This only happens if sizeof(abi_long) < sizeof(long) + * and the caller passed us a buffer holding an odd number + * of abi_longs. If the host kernel is actually using the + * extra 4 bytes then fail EINVAL; otherwise we can just + * ignore them and only copy the interesting part. + */ + int numcpus = sysconf(_SC_NPROCESSORS_CONF); + if (numcpus > arg2 * 8) { + ret = -TARGET_EINVAL; + break; + } + ret = arg2; + } + + if (copy_to_user(arg3, mask, ret)) { + goto efault; + } + } + } + break; + case TARGET_NR_sched_setaffinity: + { + unsigned int mask_size; + unsigned long *mask; + + /* + * sched_setaffinity needs multiples of ulong, so need to take + * care of mismatches between target ulong and host ulong sizes. + */ + if (arg2 & (sizeof(abi_ulong) - 1)) { + ret = -TARGET_EINVAL; + break; + } + mask_size = (arg2 + (sizeof(*mask) - 1)) & ~(sizeof(*mask) - 1); + + mask = alloca(mask_size); + if (!lock_user_struct(VERIFY_READ, p, arg3, 1)) { + goto efault; + } + memcpy(mask, p, arg2); + unlock_user_struct(p, arg2, 0); + + ret = get_errno(sys_sched_setaffinity(arg1, mask_size, mask)); + } + break; + case TARGET_NR_sched_setparam: + { + struct sched_param *target_schp; + struct sched_param schp; + + if (arg2 == 0) { + return -TARGET_EINVAL; + } + if (!lock_user_struct(VERIFY_READ, target_schp, arg2, 1)) + goto efault; + schp.sched_priority = tswap32(target_schp->sched_priority); + unlock_user_struct(target_schp, arg2, 0); + ret = get_errno(sched_setparam(arg1, &schp)); + } + break; + case TARGET_NR_sched_getparam: + { + struct sched_param *target_schp; + struct sched_param schp; + + if (arg2 == 0) { + return -TARGET_EINVAL; + } + ret = get_errno(sched_getparam(arg1, &schp)); + if (!is_error(ret)) { + if (!lock_user_struct(VERIFY_WRITE, target_schp, arg2, 0)) + goto efault; + target_schp->sched_priority = tswap32(schp.sched_priority); + unlock_user_struct(target_schp, arg2, 1); + } + } + break; + case TARGET_NR_sched_setscheduler: + { + struct sched_param *target_schp; + struct sched_param schp; + if (arg3 == 0) { + return -TARGET_EINVAL; + } + if (!lock_user_struct(VERIFY_READ, target_schp, arg3, 1)) + goto efault; + schp.sched_priority = tswap32(target_schp->sched_priority); + unlock_user_struct(target_schp, arg3, 0); + ret = get_errno(sched_setscheduler(arg1, arg2, &schp)); + } + break; + case TARGET_NR_sched_getscheduler: + ret = get_errno(sched_getscheduler(arg1)); + break; + case TARGET_NR_sched_yield: + ret = get_errno(sched_yield()); + break; + case TARGET_NR_sched_get_priority_max: + ret = get_errno(sched_get_priority_max(arg1)); + break; + case TARGET_NR_sched_get_priority_min: + ret = get_errno(sched_get_priority_min(arg1)); + break; + case TARGET_NR_sched_rr_get_interval: + { + struct timespec ts; + ret = get_errno(sched_rr_get_interval(arg1, &ts)); + if (!is_error(ret)) { + ret = host_to_target_timespec(arg2, &ts); + } + } + break; + case TARGET_NR_nanosleep: + { + struct timespec req, rem; + target_to_host_timespec(&req, arg1); + ret = get_errno(nanosleep(&req, &rem)); + if (is_error(ret) && arg2) { + host_to_target_timespec(arg2, &rem); + } + } + break; +#ifdef TARGET_NR_query_module + case TARGET_NR_query_module: + goto unimplemented; +#endif +#ifdef TARGET_NR_nfsservctl + case TARGET_NR_nfsservctl: + goto unimplemented; +#endif + case TARGET_NR_prctl: + switch (arg1) { + case PR_GET_PDEATHSIG: + { + int deathsig; + ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5)); + if (!is_error(ret) && arg2 + && put_user_ual(deathsig, arg2)) { + goto efault; + } + break; + } +#ifdef PR_GET_NAME + case PR_GET_NAME: + { + void *name = lock_user(VERIFY_WRITE, arg2, 16, 1); + if (!name) { + goto efault; + } + ret = get_errno(prctl(arg1, (unsigned long)name, + arg3, arg4, arg5)); + unlock_user(name, arg2, 16); + break; + } + case PR_SET_NAME: + { + void *name = lock_user(VERIFY_READ, arg2, 16, 1); + if (!name) { + goto efault; + } + ret = get_errno(prctl(arg1, (unsigned long)name, + arg3, arg4, arg5)); + unlock_user(name, arg2, 0); + break; + } +#endif + default: + /* Most prctl options have no pointer arguments */ + ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5)); + break; + } + break; +#ifdef TARGET_NR_arch_prctl + case TARGET_NR_arch_prctl: +#if defined(TARGET_I386) && !defined(TARGET_ABI32) + ret = do_arch_prctl(cpu_env, arg1, arg2); + break; +#else + goto unimplemented; +#endif +#endif +#ifdef TARGET_NR_pread64 + case TARGET_NR_pread64: + if (regpairs_aligned(cpu_env)) { + arg4 = arg5; + arg5 = arg6; + } + if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) + goto efault; + ret = get_errno(pread64(arg1, p, arg3, target_offset64(arg4, arg5))); + unlock_user(p, arg2, ret); + break; + case TARGET_NR_pwrite64: + if (regpairs_aligned(cpu_env)) { + arg4 = arg5; + arg5 = arg6; + } + if (!(p = lock_user(VERIFY_READ, arg2, arg3, 1))) + goto efault; + ret = get_errno(pwrite64(arg1, p, arg3, target_offset64(arg4, arg5))); + unlock_user(p, arg2, 0); + break; +#endif + case TARGET_NR_getcwd: + if (!(p = lock_user(VERIFY_WRITE, arg1, arg2, 0))) + goto efault; + ret = get_errno(sys_getcwd1(p, arg2)); + unlock_user(p, arg1, ret); + break; + case TARGET_NR_capget: + case TARGET_NR_capset: + { + struct target_user_cap_header *target_header; + struct target_user_cap_data *target_data = NULL; + struct __user_cap_header_struct header; + struct __user_cap_data_struct data[2]; + struct __user_cap_data_struct *dataptr = NULL; + int i, target_datalen; + int data_items = 1; + + if (!lock_user_struct(VERIFY_WRITE, target_header, arg1, 1)) { + goto efault; + } + header.version = tswap32(target_header->version); + header.pid = tswap32(target_header->pid); + + if (header.version != _LINUX_CAPABILITY_VERSION) { + /* Version 2 and up takes pointer to two user_data structs */ + data_items = 2; + } + + target_datalen = sizeof(*target_data) * data_items; + + if (arg2) { + if (num == TARGET_NR_capget) { + target_data = lock_user(VERIFY_WRITE, arg2, target_datalen, 0); + } else { + target_data = lock_user(VERIFY_READ, arg2, target_datalen, 1); + } + if (!target_data) { + unlock_user_struct(target_header, arg1, 0); + goto efault; + } + + if (num == TARGET_NR_capset) { + for (i = 0; i < data_items; i++) { + data[i].effective = tswap32(target_data[i].effective); + data[i].permitted = tswap32(target_data[i].permitted); + data[i].inheritable = tswap32(target_data[i].inheritable); + } + } + + dataptr = data; + } + + if (num == TARGET_NR_capget) { + ret = get_errno(capget(&header, dataptr)); + } else { + ret = get_errno(capset(&header, dataptr)); + } + + /* The kernel always updates version for both capget and capset */ + target_header->version = tswap32(header.version); + unlock_user_struct(target_header, arg1, 1); + + if (arg2) { + if (num == TARGET_NR_capget) { + for (i = 0; i < data_items; i++) { + target_data[i].effective = tswap32(data[i].effective); + target_data[i].permitted = tswap32(data[i].permitted); + target_data[i].inheritable = tswap32(data[i].inheritable); + } + unlock_user(target_data, arg2, target_datalen); + } else { + unlock_user(target_data, arg2, 0); + } + } + break; + } + case TARGET_NR_sigaltstack: +#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_MIPS) || \ + defined(TARGET_SPARC) || defined(TARGET_PPC) || defined(TARGET_ALPHA) || \ + defined(TARGET_M68K) || defined(TARGET_S390X) || defined(TARGET_OPENRISC) + ret = do_sigaltstack(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env)); + break; +#else + goto unimplemented; +#endif + +#ifdef CONFIG_SENDFILE + case TARGET_NR_sendfile: + { + off_t *offp = NULL; + off_t off; + if (arg3) { + ret = get_user_sal(off, arg3); + if (is_error(ret)) { + break; + } + offp = &off; + } + ret = get_errno(sendfile(arg1, arg2, offp, arg4)); + if (!is_error(ret) && arg3) { + abi_long ret2 = put_user_sal(off, arg3); + if (is_error(ret2)) { + ret = ret2; + } + } + break; + } +#ifdef TARGET_NR_sendfile64 + case TARGET_NR_sendfile64: + { + off_t *offp = NULL; + off_t off; + if (arg3) { + ret = get_user_s64(off, arg3); + if (is_error(ret)) { + break; + } + offp = &off; + } + ret = get_errno(sendfile(arg1, arg2, offp, arg4)); + if (!is_error(ret) && arg3) { + abi_long ret2 = put_user_s64(off, arg3); + if (is_error(ret2)) { + ret = ret2; + } + } + break; + } +#endif +#else + case TARGET_NR_sendfile: +#ifdef TARGET_NR_sendfile64 + case TARGET_NR_sendfile64: +#endif + goto unimplemented; +#endif + +#ifdef TARGET_NR_getpmsg + case TARGET_NR_getpmsg: + goto unimplemented; +#endif +#ifdef TARGET_NR_putpmsg + case TARGET_NR_putpmsg: + goto unimplemented; +#endif +#ifdef TARGET_NR_vfork + case TARGET_NR_vfork: + ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, + 0, 0, 0, 0)); + break; +#endif +#ifdef TARGET_NR_ugetrlimit + case TARGET_NR_ugetrlimit: + { + struct rlimit rlim; + int resource = target_to_host_resource(arg1); + ret = get_errno(getrlimit(resource, &rlim)); + if (!is_error(ret)) { + struct target_rlimit *target_rlim; + if (!lock_user_struct(VERIFY_WRITE, target_rlim, arg2, 0)) + goto efault; + target_rlim->rlim_cur = host_to_target_rlim(rlim.rlim_cur); + target_rlim->rlim_max = host_to_target_rlim(rlim.rlim_max); + unlock_user_struct(target_rlim, arg2, 1); + } + break; + } +#endif +#ifdef TARGET_NR_truncate64 + case TARGET_NR_truncate64: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = target_truncate64(cpu_env, p, arg2, arg3, arg4); + unlock_user(p, arg1, 0); + break; +#endif +#ifdef TARGET_NR_ftruncate64 + case TARGET_NR_ftruncate64: + ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4); + break; +#endif +#ifdef TARGET_NR_stat64 + case TARGET_NR_stat64: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(stat(path(p), &st)); + unlock_user(p, arg1, 0); + if (!is_error(ret)) + ret = host_to_target_stat64(cpu_env, arg2, &st); + break; +#endif +#ifdef TARGET_NR_lstat64 + case TARGET_NR_lstat64: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(lstat(path(p), &st)); + unlock_user(p, arg1, 0); + if (!is_error(ret)) + ret = host_to_target_stat64(cpu_env, arg2, &st); + break; +#endif +#ifdef TARGET_NR_fstat64 + case TARGET_NR_fstat64: + ret = get_errno(fstat(arg1, &st)); + if (!is_error(ret)) + ret = host_to_target_stat64(cpu_env, arg2, &st); + break; +#endif +#if (defined(TARGET_NR_fstatat64) || defined(TARGET_NR_newfstatat)) +#ifdef TARGET_NR_fstatat64 + case TARGET_NR_fstatat64: +#endif +#ifdef TARGET_NR_newfstatat + case TARGET_NR_newfstatat: +#endif + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(fstatat(arg1, path(p), &st, arg4)); + if (!is_error(ret)) + ret = host_to_target_stat64(cpu_env, arg3, &st); + break; +#endif + case TARGET_NR_lchown: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3))); + unlock_user(p, arg1, 0); + break; +#ifdef TARGET_NR_getuid + case TARGET_NR_getuid: + ret = get_errno(high2lowuid(getuid())); + break; +#endif +#ifdef TARGET_NR_getgid + case TARGET_NR_getgid: + ret = get_errno(high2lowgid(getgid())); + break; +#endif +#ifdef TARGET_NR_geteuid + case TARGET_NR_geteuid: + ret = get_errno(high2lowuid(geteuid())); + break; +#endif +#ifdef TARGET_NR_getegid + case TARGET_NR_getegid: + ret = get_errno(high2lowgid(getegid())); + break; +#endif + case TARGET_NR_setreuid: + ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2))); + break; + case TARGET_NR_setregid: + ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2))); + break; + case TARGET_NR_getgroups: + { + int gidsetsize = arg1; + target_id *target_grouplist; + gid_t *grouplist; + int i; + + grouplist = alloca(gidsetsize * sizeof(gid_t)); + ret = get_errno(getgroups(gidsetsize, grouplist)); + if (gidsetsize == 0) + break; + if (!is_error(ret)) { + target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * sizeof(target_id), 0); + if (!target_grouplist) + goto efault; + for(i = 0;i < ret; i++) + target_grouplist[i] = tswapid(high2lowgid(grouplist[i])); + unlock_user(target_grouplist, arg2, gidsetsize * sizeof(target_id)); + } + } + break; + case TARGET_NR_setgroups: + { + int gidsetsize = arg1; + target_id *target_grouplist; + gid_t *grouplist = NULL; + int i; + if (gidsetsize) { + grouplist = alloca(gidsetsize * sizeof(gid_t)); + target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * sizeof(target_id), 1); + if (!target_grouplist) { + ret = -TARGET_EFAULT; + goto fail; + } + for (i = 0; i < gidsetsize; i++) { + grouplist[i] = low2highgid(tswapid(target_grouplist[i])); + } + unlock_user(target_grouplist, arg2, 0); + } + ret = get_errno(setgroups(gidsetsize, grouplist)); + } + break; + case TARGET_NR_fchown: + ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3))); + break; +#if defined(TARGET_NR_fchownat) + case TARGET_NR_fchownat: + if (!(p = lock_user_string(arg2))) + goto efault; + ret = get_errno(fchownat(arg1, p, low2highuid(arg3), + low2highgid(arg4), arg5)); + unlock_user(p, arg2, 0); + break; +#endif +#ifdef TARGET_NR_setresuid + case TARGET_NR_setresuid: + ret = get_errno(setresuid(low2highuid(arg1), + low2highuid(arg2), + low2highuid(arg3))); + break; +#endif +#ifdef TARGET_NR_getresuid + case TARGET_NR_getresuid: + { + uid_t ruid, euid, suid; + ret = get_errno(getresuid(&ruid, &euid, &suid)); + if (!is_error(ret)) { + if (put_user_id(high2lowuid(ruid), arg1) + || put_user_id(high2lowuid(euid), arg2) + || put_user_id(high2lowuid(suid), arg3)) + goto efault; + } + } + break; +#endif +#ifdef TARGET_NR_getresgid + case TARGET_NR_setresgid: + ret = get_errno(setresgid(low2highgid(arg1), + low2highgid(arg2), + low2highgid(arg3))); + break; +#endif +#ifdef TARGET_NR_getresgid + case TARGET_NR_getresgid: + { + gid_t rgid, egid, sgid; + ret = get_errno(getresgid(&rgid, &egid, &sgid)); + if (!is_error(ret)) { + if (put_user_id(high2lowgid(rgid), arg1) + || put_user_id(high2lowgid(egid), arg2) + || put_user_id(high2lowgid(sgid), arg3)) + goto efault; + } + } + break; +#endif + case TARGET_NR_chown: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3))); + unlock_user(p, arg1, 0); + break; + case TARGET_NR_setuid: + ret = get_errno(setuid(low2highuid(arg1))); + break; + case TARGET_NR_setgid: + ret = get_errno(setgid(low2highgid(arg1))); + break; + case TARGET_NR_setfsuid: + ret = get_errno(setfsuid(arg1)); + break; + case TARGET_NR_setfsgid: + ret = get_errno(setfsgid(arg1)); + break; + +#ifdef TARGET_NR_lchown32 + case TARGET_NR_lchown32: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(lchown(p, arg2, arg3)); + unlock_user(p, arg1, 0); + break; +#endif +#ifdef TARGET_NR_getuid32 + case TARGET_NR_getuid32: + ret = get_errno(getuid()); + break; +#endif + +#if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA) + /* Alpha specific */ + case TARGET_NR_getxuid: + { + uid_t euid; + euid=geteuid(); + ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid; + } + ret = get_errno(getuid()); + break; +#endif +#if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA) + /* Alpha specific */ + case TARGET_NR_getxgid: + { + uid_t egid; + egid=getegid(); + ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid; + } + ret = get_errno(getgid()); + break; +#endif +#if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA) + /* Alpha specific */ + case TARGET_NR_osf_getsysinfo: + ret = -TARGET_EOPNOTSUPP; + switch (arg1) { + case TARGET_GSI_IEEE_FP_CONTROL: + { + uint64_t swcr, fpcr = cpu_alpha_load_fpcr (cpu_env); + + /* Copied from linux ieee_fpcr_to_swcr. */ + swcr = (fpcr >> 35) & SWCR_STATUS_MASK; + swcr |= (fpcr >> 36) & SWCR_MAP_DMZ; + swcr |= (~fpcr >> 48) & (SWCR_TRAP_ENABLE_INV + | SWCR_TRAP_ENABLE_DZE + | SWCR_TRAP_ENABLE_OVF); + swcr |= (~fpcr >> 57) & (SWCR_TRAP_ENABLE_UNF + | SWCR_TRAP_ENABLE_INE); + swcr |= (fpcr >> 47) & SWCR_MAP_UMZ; + swcr |= (~fpcr >> 41) & SWCR_TRAP_ENABLE_DNO; + + if (put_user_u64 (swcr, arg2)) + goto efault; + ret = 0; + } + break; + + /* case GSI_IEEE_STATE_AT_SIGNAL: + -- Not implemented in linux kernel. + case GSI_UACPROC: + -- Retrieves current unaligned access state; not much used. + case GSI_PROC_TYPE: + -- Retrieves implver information; surely not used. + case GSI_GET_HWRPB: + -- Grabs a copy of the HWRPB; surely not used. + */ + } + break; +#endif +#if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA) + /* Alpha specific */ + case TARGET_NR_osf_setsysinfo: + ret = -TARGET_EOPNOTSUPP; + switch (arg1) { + case TARGET_SSI_IEEE_FP_CONTROL: + { + uint64_t swcr, fpcr, orig_fpcr; + + if (get_user_u64 (swcr, arg2)) { + goto efault; + } + orig_fpcr = cpu_alpha_load_fpcr(cpu_env); + fpcr = orig_fpcr & FPCR_DYN_MASK; + + /* Copied from linux ieee_swcr_to_fpcr. */ + fpcr |= (swcr & SWCR_STATUS_MASK) << 35; + fpcr |= (swcr & SWCR_MAP_DMZ) << 36; + fpcr |= (~swcr & (SWCR_TRAP_ENABLE_INV + | SWCR_TRAP_ENABLE_DZE + | SWCR_TRAP_ENABLE_OVF)) << 48; + fpcr |= (~swcr & (SWCR_TRAP_ENABLE_UNF + | SWCR_TRAP_ENABLE_INE)) << 57; + fpcr |= (swcr & SWCR_MAP_UMZ ? FPCR_UNDZ | FPCR_UNFD : 0); + fpcr |= (~swcr & SWCR_TRAP_ENABLE_DNO) << 41; + + cpu_alpha_store_fpcr(cpu_env, fpcr); + ret = 0; + } + break; + + case TARGET_SSI_IEEE_RAISE_EXCEPTION: + { + uint64_t exc, fpcr, orig_fpcr; + int si_code; + + if (get_user_u64(exc, arg2)) { + goto efault; + } + + orig_fpcr = cpu_alpha_load_fpcr(cpu_env); + + /* We only add to the exception status here. */ + fpcr = orig_fpcr | ((exc & SWCR_STATUS_MASK) << 35); + + cpu_alpha_store_fpcr(cpu_env, fpcr); + ret = 0; + + /* Old exceptions are not signaled. */ + fpcr &= ~(orig_fpcr & FPCR_STATUS_MASK); + + /* If any exceptions set by this call, + and are unmasked, send a signal. */ + si_code = 0; + if ((fpcr & (FPCR_INE | FPCR_INED)) == FPCR_INE) { + si_code = TARGET_FPE_FLTRES; + } + if ((fpcr & (FPCR_UNF | FPCR_UNFD)) == FPCR_UNF) { + si_code = TARGET_FPE_FLTUND; + } + if ((fpcr & (FPCR_OVF | FPCR_OVFD)) == FPCR_OVF) { + si_code = TARGET_FPE_FLTOVF; + } + if ((fpcr & (FPCR_DZE | FPCR_DZED)) == FPCR_DZE) { + si_code = TARGET_FPE_FLTDIV; + } + if ((fpcr & (FPCR_INV | FPCR_INVD)) == FPCR_INV) { + si_code = TARGET_FPE_FLTINV; + } + if (si_code != 0) { + target_siginfo_t info; + info.si_signo = SIGFPE; + info.si_errno = 0; + info.si_code = si_code; + info._sifields._sigfault._addr + = ((CPUArchState *)cpu_env)->pc; + queue_signal((CPUArchState *)cpu_env, info.si_signo, &info); + } + } + break; + + /* case SSI_NVPAIRS: + -- Used with SSIN_UACPROC to enable unaligned accesses. + case SSI_IEEE_STATE_AT_SIGNAL: + case SSI_IEEE_IGNORE_STATE_AT_SIGNAL: + -- Not implemented in linux kernel + */ + } + break; +#endif +#ifdef TARGET_NR_osf_sigprocmask + /* Alpha specific. */ + case TARGET_NR_osf_sigprocmask: + { + abi_ulong mask; + int how; + sigset_t set, oldset; + + switch(arg1) { + case TARGET_SIG_BLOCK: + how = SIG_BLOCK; + break; + case TARGET_SIG_UNBLOCK: + how = SIG_UNBLOCK; + break; + case TARGET_SIG_SETMASK: + how = SIG_SETMASK; + break; + default: + ret = -TARGET_EINVAL; + goto fail; + } + mask = arg2; + target_to_host_old_sigset(&set, &mask); + do_sigprocmask(how, &set, &oldset); + host_to_target_old_sigset(&mask, &oldset); + ret = mask; + } + break; +#endif + +#ifdef TARGET_NR_getgid32 + case TARGET_NR_getgid32: + ret = get_errno(getgid()); + break; +#endif +#ifdef TARGET_NR_geteuid32 + case TARGET_NR_geteuid32: + ret = get_errno(geteuid()); + break; +#endif +#ifdef TARGET_NR_getegid32 + case TARGET_NR_getegid32: + ret = get_errno(getegid()); + break; +#endif +#ifdef TARGET_NR_setreuid32 + case TARGET_NR_setreuid32: + ret = get_errno(setreuid(arg1, arg2)); + break; +#endif +#ifdef TARGET_NR_setregid32 + case TARGET_NR_setregid32: + ret = get_errno(setregid(arg1, arg2)); + break; +#endif +#ifdef TARGET_NR_getgroups32 + case TARGET_NR_getgroups32: + { + int gidsetsize = arg1; + uint32_t *target_grouplist; + gid_t *grouplist; + int i; + + grouplist = alloca(gidsetsize * sizeof(gid_t)); + ret = get_errno(getgroups(gidsetsize, grouplist)); + if (gidsetsize == 0) + break; + if (!is_error(ret)) { + target_grouplist = lock_user(VERIFY_WRITE, arg2, gidsetsize * 4, 0); + if (!target_grouplist) { + ret = -TARGET_EFAULT; + goto fail; + } + for(i = 0;i < ret; i++) + target_grouplist[i] = tswap32(grouplist[i]); + unlock_user(target_grouplist, arg2, gidsetsize * 4); + } + } + break; +#endif +#ifdef TARGET_NR_setgroups32 + case TARGET_NR_setgroups32: + { + int gidsetsize = arg1; + uint32_t *target_grouplist; + gid_t *grouplist; + int i; + + grouplist = alloca(gidsetsize * sizeof(gid_t)); + target_grouplist = lock_user(VERIFY_READ, arg2, gidsetsize * 4, 1); + if (!target_grouplist) { + ret = -TARGET_EFAULT; + goto fail; + } + for(i = 0;i < gidsetsize; i++) + grouplist[i] = tswap32(target_grouplist[i]); + unlock_user(target_grouplist, arg2, 0); + ret = get_errno(setgroups(gidsetsize, grouplist)); + } + break; +#endif +#ifdef TARGET_NR_fchown32 + case TARGET_NR_fchown32: + ret = get_errno(fchown(arg1, arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_setresuid32 + case TARGET_NR_setresuid32: + ret = get_errno(setresuid(arg1, arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_getresuid32 + case TARGET_NR_getresuid32: + { + uid_t ruid, euid, suid; + ret = get_errno(getresuid(&ruid, &euid, &suid)); + if (!is_error(ret)) { + if (put_user_u32(ruid, arg1) + || put_user_u32(euid, arg2) + || put_user_u32(suid, arg3)) + goto efault; + } + } + break; +#endif +#ifdef TARGET_NR_setresgid32 + case TARGET_NR_setresgid32: + ret = get_errno(setresgid(arg1, arg2, arg3)); + break; +#endif +#ifdef TARGET_NR_getresgid32 + case TARGET_NR_getresgid32: + { + gid_t rgid, egid, sgid; + ret = get_errno(getresgid(&rgid, &egid, &sgid)); + if (!is_error(ret)) { + if (put_user_u32(rgid, arg1) + || put_user_u32(egid, arg2) + || put_user_u32(sgid, arg3)) + goto efault; + } + } + break; +#endif +#ifdef TARGET_NR_chown32 + case TARGET_NR_chown32: + if (!(p = lock_user_string(arg1))) + goto efault; + ret = get_errno(chown(p, arg2, arg3)); + unlock_user(p, arg1, 0); + break; +#endif +#ifdef TARGET_NR_setuid32 + case TARGET_NR_setuid32: + ret = get_errno(setuid(arg1)); + break; +#endif +#ifdef TARGET_NR_setgid32 + case TARGET_NR_setgid32: + ret = get_errno(setgid(arg1)); + break; +#endif +#ifdef TARGET_NR_setfsuid32 + case TARGET_NR_setfsuid32: + ret = get_errno(setfsuid(arg1)); + break; +#endif +#ifdef TARGET_NR_setfsgid32 + case TARGET_NR_setfsgid32: + ret = get_errno(setfsgid(arg1)); + break; +#endif + + case TARGET_NR_pivot_root: + goto unimplemented; +#ifdef TARGET_NR_mincore + case TARGET_NR_mincore: + { + void *a; + ret = -TARGET_EFAULT; + if (!(a = lock_user(VERIFY_READ, arg1,arg2, 0))) + goto efault; + if (!(p = lock_user_string(arg3))) + goto mincore_fail; + ret = get_errno(mincore(a, arg2, p)); + unlock_user(p, arg3, ret); + mincore_fail: + unlock_user(a, arg1, 0); + } + break; +#endif +#ifdef TARGET_NR_arm_fadvise64_64 + case TARGET_NR_arm_fadvise64_64: + { + /* + * arm_fadvise64_64 looks like fadvise64_64 but + * with different argument order + */ + abi_long temp; + temp = arg3; + arg3 = arg4; + arg4 = temp; + } +#endif +#if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_arm_fadvise64_64) || defined(TARGET_NR_fadvise64) +#ifdef TARGET_NR_fadvise64_64 + case TARGET_NR_fadvise64_64: +#endif +#ifdef TARGET_NR_fadvise64 + case TARGET_NR_fadvise64: +#endif +#ifdef TARGET_S390X + switch (arg4) { + case 4: arg4 = POSIX_FADV_NOREUSE + 1; break; /* make sure it's an invalid value */ + case 5: arg4 = POSIX_FADV_NOREUSE + 2; break; /* ditto */ + case 6: arg4 = POSIX_FADV_DONTNEED; break; + case 7: arg4 = POSIX_FADV_NOREUSE; break; + default: break; + } +#endif + ret = -posix_fadvise(arg1, arg2, arg3, arg4); + break; +#endif +#ifdef TARGET_NR_madvise + case TARGET_NR_madvise: + /* A straight passthrough may not be safe because qemu sometimes + turns private file-backed mappings into anonymous mappings. + This will break MADV_DONTNEED. + This is a hint, so ignoring and returning success is ok. */ + ret = get_errno(0); + break; +#endif +#if TARGET_ABI_BITS == 32 + case TARGET_NR_fcntl64: + { + int cmd; + struct flock64 fl; + struct target_flock64 *target_fl; +#ifdef TARGET_ARM + struct target_eabi_flock64 *target_efl; +#endif + + cmd = target_to_host_fcntl_cmd(arg2); + if (cmd == -TARGET_EINVAL) { + ret = cmd; + break; + } + + switch(arg2) { + case TARGET_F_GETLK64: +#ifdef TARGET_ARM + if (((CPUARMState *)cpu_env)->eabi) { + if (!lock_user_struct(VERIFY_READ, target_efl, arg3, 1)) + goto efault; + fl.l_type = tswap16(target_efl->l_type); + fl.l_whence = tswap16(target_efl->l_whence); + fl.l_start = tswap64(target_efl->l_start); + fl.l_len = tswap64(target_efl->l_len); + fl.l_pid = tswap32(target_efl->l_pid); + unlock_user_struct(target_efl, arg3, 0); + } else +#endif + { + if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) + goto efault; + fl.l_type = tswap16(target_fl->l_type); + fl.l_whence = tswap16(target_fl->l_whence); + fl.l_start = tswap64(target_fl->l_start); + fl.l_len = tswap64(target_fl->l_len); + fl.l_pid = tswap32(target_fl->l_pid); + unlock_user_struct(target_fl, arg3, 0); + } + ret = get_errno(fcntl(arg1, cmd, &fl)); + if (ret == 0) { +#ifdef TARGET_ARM + if (((CPUARMState *)cpu_env)->eabi) { + if (!lock_user_struct(VERIFY_WRITE, target_efl, arg3, 0)) + goto efault; + target_efl->l_type = tswap16(fl.l_type); + target_efl->l_whence = tswap16(fl.l_whence); + target_efl->l_start = tswap64(fl.l_start); + target_efl->l_len = tswap64(fl.l_len); + target_efl->l_pid = tswap32(fl.l_pid); + unlock_user_struct(target_efl, arg3, 1); + } else +#endif + { + if (!lock_user_struct(VERIFY_WRITE, target_fl, arg3, 0)) + goto efault; + target_fl->l_type = tswap16(fl.l_type); + target_fl->l_whence = tswap16(fl.l_whence); + target_fl->l_start = tswap64(fl.l_start); + target_fl->l_len = tswap64(fl.l_len); + target_fl->l_pid = tswap32(fl.l_pid); + unlock_user_struct(target_fl, arg3, 1); + } + } + break; + + case TARGET_F_SETLK64: + case TARGET_F_SETLKW64: +#ifdef TARGET_ARM + if (((CPUARMState *)cpu_env)->eabi) { + if (!lock_user_struct(VERIFY_READ, target_efl, arg3, 1)) + goto efault; + fl.l_type = tswap16(target_efl->l_type); + fl.l_whence = tswap16(target_efl->l_whence); + fl.l_start = tswap64(target_efl->l_start); + fl.l_len = tswap64(target_efl->l_len); + fl.l_pid = tswap32(target_efl->l_pid); + unlock_user_struct(target_efl, arg3, 0); + } else +#endif + { + if (!lock_user_struct(VERIFY_READ, target_fl, arg3, 1)) + goto efault; + fl.l_type = tswap16(target_fl->l_type); + fl.l_whence = tswap16(target_fl->l_whence); + fl.l_start = tswap64(target_fl->l_start); + fl.l_len = tswap64(target_fl->l_len); + fl.l_pid = tswap32(target_fl->l_pid); + unlock_user_struct(target_fl, arg3, 0); + } + ret = get_errno(fcntl(arg1, cmd, &fl)); + break; + default: + ret = do_fcntl(arg1, arg2, arg3); + break; + } + break; + } +#endif +#ifdef TARGET_NR_cacheflush + case TARGET_NR_cacheflush: + /* self-modifying code is handled automatically, so nothing needed */ + ret = 0; + break; +#endif +#ifdef TARGET_NR_security + case TARGET_NR_security: + goto unimplemented; +#endif +#ifdef TARGET_NR_getpagesize + case TARGET_NR_getpagesize: + ret = TARGET_PAGE_SIZE; + break; +#endif + case TARGET_NR_gettid: + ret = get_errno(gettid()); + break; +#ifdef TARGET_NR_readahead + case TARGET_NR_readahead: +#if TARGET_ABI_BITS == 32 + if (regpairs_aligned(cpu_env)) { + arg2 = arg3; + arg3 = arg4; + arg4 = arg5; + } + ret = get_errno(readahead(arg1, ((off64_t)arg3 << 32) | arg2, arg4)); +#else + ret = get_errno(readahead(arg1, arg2, arg3)); +#endif + break; +#endif +#ifdef CONFIG_ATTR +#ifdef TARGET_NR_setxattr + case TARGET_NR_listxattr: + case TARGET_NR_llistxattr: + { + void *p, *b = 0; + if (arg2) { + b = lock_user(VERIFY_WRITE, arg2, arg3, 0); + if (!b) { + ret = -TARGET_EFAULT; + break; + } + } + p = lock_user_string(arg1); + if (p) { + if (num == TARGET_NR_listxattr) { + ret = get_errno(listxattr(p, b, arg3)); + } else { + ret = get_errno(llistxattr(p, b, arg3)); + } + } else { + ret = -TARGET_EFAULT; + } + unlock_user(p, arg1, 0); + unlock_user(b, arg2, arg3); + break; + } + case TARGET_NR_flistxattr: + { + void *b = 0; + if (arg2) { + b = lock_user(VERIFY_WRITE, arg2, arg3, 0); + if (!b) { + ret = -TARGET_EFAULT; + break; + } + } + ret = get_errno(flistxattr(arg1, b, arg3)); + unlock_user(b, arg2, arg3); + break; + } + case TARGET_NR_setxattr: + case TARGET_NR_lsetxattr: + { + void *p, *n, *v = 0; + if (arg3) { + v = lock_user(VERIFY_READ, arg3, arg4, 1); + if (!v) { + ret = -TARGET_EFAULT; + break; + } + } + p = lock_user_string(arg1); + n = lock_user_string(arg2); + if (p && n) { + if (num == TARGET_NR_setxattr) { + ret = get_errno(setxattr(p, n, v, arg4, arg5)); + } else { + ret = get_errno(lsetxattr(p, n, v, arg4, arg5)); + } + } else { + ret = -TARGET_EFAULT; + } + unlock_user(p, arg1, 0); + unlock_user(n, arg2, 0); + unlock_user(v, arg3, 0); + } + break; + case TARGET_NR_fsetxattr: + { + void *n, *v = 0; + if (arg3) { + v = lock_user(VERIFY_READ, arg3, arg4, 1); + if (!v) { + ret = -TARGET_EFAULT; + break; + } + } + n = lock_user_string(arg2); + if (n) { + ret = get_errno(fsetxattr(arg1, n, v, arg4, arg5)); + } else { + ret = -TARGET_EFAULT; + } + unlock_user(n, arg2, 0); + unlock_user(v, arg3, 0); + } + break; + case TARGET_NR_getxattr: + case TARGET_NR_lgetxattr: + { + void *p, *n, *v = 0; + if (arg3) { + v = lock_user(VERIFY_WRITE, arg3, arg4, 0); + if (!v) { + ret = -TARGET_EFAULT; + break; + } + } + p = lock_user_string(arg1); + n = lock_user_string(arg2); + if (p && n) { + if (num == TARGET_NR_getxattr) { + ret = get_errno(getxattr(p, n, v, arg4)); + } else { + ret = get_errno(lgetxattr(p, n, v, arg4)); + } + } else { + ret = -TARGET_EFAULT; + } + unlock_user(p, arg1, 0); + unlock_user(n, arg2, 0); + unlock_user(v, arg3, arg4); + } + break; + case TARGET_NR_fgetxattr: + { + void *n, *v = 0; + if (arg3) { + v = lock_user(VERIFY_WRITE, arg3, arg4, 0); + if (!v) { + ret = -TARGET_EFAULT; + break; + } + } + n = lock_user_string(arg2); + if (n) { + ret = get_errno(fgetxattr(arg1, n, v, arg4)); + } else { + ret = -TARGET_EFAULT; + } + unlock_user(n, arg2, 0); + unlock_user(v, arg3, arg4); + } + break; + case TARGET_NR_removexattr: + case TARGET_NR_lremovexattr: + { + void *p, *n; + p = lock_user_string(arg1); + n = lock_user_string(arg2); + if (p && n) { + if (num == TARGET_NR_removexattr) { + ret = get_errno(removexattr(p, n)); + } else { + ret = get_errno(lremovexattr(p, n)); + } + } else { + ret = -TARGET_EFAULT; + } + unlock_user(p, arg1, 0); + unlock_user(n, arg2, 0); + } + break; + case TARGET_NR_fremovexattr: + { + void *n; + n = lock_user_string(arg2); + if (n) { + ret = get_errno(fremovexattr(arg1, n)); + } else { + ret = -TARGET_EFAULT; + } + unlock_user(n, arg2, 0); + } + break; +#endif +#endif /* CONFIG_ATTR */ +#ifdef TARGET_NR_set_thread_area + case TARGET_NR_set_thread_area: +#if defined(TARGET_MIPS) + ((CPUMIPSState *) cpu_env)->active_tc.CP0_UserLocal = arg1; + ret = 0; + break; +#elif defined(TARGET_CRIS) + if (arg1 & 0xff) + ret = -TARGET_EINVAL; + else { + ((CPUCRISState *) cpu_env)->pregs[PR_PID] = arg1; + ret = 0; + } + break; +#elif defined(TARGET_I386) && defined(TARGET_ABI32) + ret = do_set_thread_area(cpu_env, arg1); + break; +#elif defined(TARGET_M68K) + { + TaskState *ts = cpu->opaque; + ts->tp_value = arg1; + ret = 0; + break; + } +#else + goto unimplemented_nowarn; +#endif +#endif +#ifdef TARGET_NR_get_thread_area + case TARGET_NR_get_thread_area: +#if defined(TARGET_I386) && defined(TARGET_ABI32) + ret = do_get_thread_area(cpu_env, arg1); + break; +#elif defined(TARGET_M68K) + { + TaskState *ts = cpu->opaque; + ret = ts->tp_value; + break; + } +#else + goto unimplemented_nowarn; +#endif +#endif +#ifdef TARGET_NR_getdomainname + case TARGET_NR_getdomainname: + goto unimplemented_nowarn; +#endif + +#ifdef TARGET_NR_clock_gettime + case TARGET_NR_clock_gettime: + { + struct timespec ts; + ret = get_errno(clock_gettime(arg1, &ts)); + if (!is_error(ret)) { + host_to_target_timespec(arg2, &ts); + } + break; + } +#endif +#ifdef TARGET_NR_clock_getres + case TARGET_NR_clock_getres: + { + struct timespec ts; + ret = get_errno(clock_getres(arg1, &ts)); + if (!is_error(ret)) { + host_to_target_timespec(arg2, &ts); + } + break; + } +#endif +#ifdef TARGET_NR_clock_nanosleep + case TARGET_NR_clock_nanosleep: + { + struct timespec ts; + target_to_host_timespec(&ts, arg3); + ret = get_errno(clock_nanosleep(arg1, arg2, &ts, arg4 ? &ts : NULL)); + if (arg4) + host_to_target_timespec(arg4, &ts); + +#if defined(TARGET_PPC) + /* clock_nanosleep is odd in that it returns positive errno values. + * On PPC, CR0 bit 3 should be set in such a situation. */ + if (ret) { + ((CPUPPCState *)cpu_env)->crf[0] |= 1; + } +#endif + break; + } +#endif + +#if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address) + case TARGET_NR_set_tid_address: + ret = get_errno(set_tid_address((int *)g2h(arg1))); + break; +#endif + +#if defined(TARGET_NR_tkill) && defined(__NR_tkill) + case TARGET_NR_tkill: + ret = get_errno(sys_tkill((int)arg1, target_to_host_signal(arg2))); + break; +#endif + +#if defined(TARGET_NR_tgkill) && defined(__NR_tgkill) + case TARGET_NR_tgkill: + ret = get_errno(sys_tgkill((int)arg1, (int)arg2, + target_to_host_signal(arg3))); + break; +#endif + +#ifdef TARGET_NR_set_robust_list + case TARGET_NR_set_robust_list: + case TARGET_NR_get_robust_list: + /* The ABI for supporting robust futexes has userspace pass + * the kernel a pointer to a linked list which is updated by + * userspace after the syscall; the list is walked by the kernel + * when the thread exits. Since the linked list in QEMU guest + * memory isn't a valid linked list for the host and we have + * no way to reliably intercept the thread-death event, we can't + * support these. Silently return ENOSYS so that guest userspace + * falls back to a non-robust futex implementation (which should + * be OK except in the corner case of the guest crashing while + * holding a mutex that is shared with another process via + * shared memory). + */ + goto unimplemented_nowarn; +#endif + +#if defined(TARGET_NR_utimensat) + case TARGET_NR_utimensat: + { + struct timespec *tsp, ts[2]; + if (!arg3) { + tsp = NULL; + } else { + target_to_host_timespec(ts, arg3); + target_to_host_timespec(ts+1, arg3+sizeof(struct target_timespec)); + tsp = ts; + } + if (!arg2) + ret = get_errno(sys_utimensat(arg1, NULL, tsp, arg4)); + else { + if (!(p = lock_user_string(arg2))) { + ret = -TARGET_EFAULT; + goto fail; + } + ret = get_errno(sys_utimensat(arg1, path(p), tsp, arg4)); + unlock_user(p, arg2, 0); + } + } + break; +#endif + case TARGET_NR_futex: + ret = do_futex(arg1, arg2, arg3, arg4, arg5, arg6); + break; +#if defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init) + case TARGET_NR_inotify_init: + ret = get_errno(sys_inotify_init()); + break; +#endif +#ifdef CONFIG_INOTIFY1 +#if defined(TARGET_NR_inotify_init1) && defined(__NR_inotify_init1) + case TARGET_NR_inotify_init1: + ret = get_errno(sys_inotify_init1(arg1)); + break; +#endif +#endif +#if defined(TARGET_NR_inotify_add_watch) && defined(__NR_inotify_add_watch) + case TARGET_NR_inotify_add_watch: + p = lock_user_string(arg2); + ret = get_errno(sys_inotify_add_watch(arg1, path(p), arg3)); + unlock_user(p, arg2, 0); + break; +#endif +#if defined(TARGET_NR_inotify_rm_watch) && defined(__NR_inotify_rm_watch) + case TARGET_NR_inotify_rm_watch: + ret = get_errno(sys_inotify_rm_watch(arg1, arg2)); + break; +#endif + +#if defined(TARGET_NR_mq_open) && defined(__NR_mq_open) + case TARGET_NR_mq_open: + { + struct mq_attr posix_mq_attr, *attrp; + + p = lock_user_string(arg1 - 1); + if (arg4 != 0) { + copy_from_user_mq_attr (&posix_mq_attr, arg4); + attrp = &posix_mq_attr; + } else { + attrp = 0; + } + ret = get_errno(mq_open(p, arg2, arg3, attrp)); + unlock_user (p, arg1, 0); + } + break; + + case TARGET_NR_mq_unlink: + p = lock_user_string(arg1 - 1); + ret = get_errno(mq_unlink(p)); + unlock_user (p, arg1, 0); + break; + + case TARGET_NR_mq_timedsend: + { + struct timespec ts; + + p = lock_user (VERIFY_READ, arg2, arg3, 1); + if (arg5 != 0) { + target_to_host_timespec(&ts, arg5); + ret = get_errno(mq_timedsend(arg1, p, arg3, arg4, &ts)); + host_to_target_timespec(arg5, &ts); + } + else + ret = get_errno(mq_send(arg1, p, arg3, arg4)); + unlock_user (p, arg2, arg3); + } + break; + + case TARGET_NR_mq_timedreceive: + { + struct timespec ts; + unsigned int prio; + + p = lock_user (VERIFY_READ, arg2, arg3, 1); + if (arg5 != 0) { + target_to_host_timespec(&ts, arg5); + ret = get_errno(mq_timedreceive(arg1, p, arg3, &prio, &ts)); + host_to_target_timespec(arg5, &ts); + } + else + ret = get_errno(mq_receive(arg1, p, arg3, &prio)); + unlock_user (p, arg2, arg3); + if (arg4 != 0) + put_user_u32(prio, arg4); + } + break; + + /* Not implemented for now... */ +/* case TARGET_NR_mq_notify: */ +/* break; */ + + case TARGET_NR_mq_getsetattr: + { + struct mq_attr posix_mq_attr_in, posix_mq_attr_out; + ret = 0; + if (arg3 != 0) { + ret = mq_getattr(arg1, &posix_mq_attr_out); + copy_to_user_mq_attr(arg3, &posix_mq_attr_out); + } + if (arg2 != 0) { + copy_from_user_mq_attr(&posix_mq_attr_in, arg2); + ret |= mq_setattr(arg1, &posix_mq_attr_in, &posix_mq_attr_out); + } + + } + break; +#endif + +#ifdef CONFIG_SPLICE +#ifdef TARGET_NR_tee + case TARGET_NR_tee: + { + ret = get_errno(tee(arg1,arg2,arg3,arg4)); + } + break; +#endif +#ifdef TARGET_NR_splice + case TARGET_NR_splice: + { + loff_t loff_in, loff_out; + loff_t *ploff_in = NULL, *ploff_out = NULL; + if (arg2) { + if (get_user_u64(loff_in, arg2)) { + goto efault; + } + ploff_in = &loff_in; + } + if (arg4) { + if (get_user_u64(loff_out, arg4)) { + goto efault; + } + ploff_out = &loff_out; + } + ret = get_errno(splice(arg1, ploff_in, arg3, ploff_out, arg5, arg6)); + if (arg2) { + if (put_user_u64(loff_in, arg2)) { + goto efault; + } + } + if (arg4) { + if (put_user_u64(loff_out, arg4)) { + goto efault; + } + } + } + break; +#endif +#ifdef TARGET_NR_vmsplice + case TARGET_NR_vmsplice: + { + struct iovec *vec = lock_iovec(VERIFY_READ, arg2, arg3, 1); + if (vec != NULL) { + ret = get_errno(vmsplice(arg1, vec, arg3, arg4)); + unlock_iovec(vec, arg2, arg3, 0); + } else { + ret = -host_to_target_errno(errno); + } + } + break; +#endif +#endif /* CONFIG_SPLICE */ +#ifdef CONFIG_EVENTFD +#if defined(TARGET_NR_eventfd) + case TARGET_NR_eventfd: + ret = get_errno(eventfd(arg1, 0)); + break; +#endif +#if defined(TARGET_NR_eventfd2) + case TARGET_NR_eventfd2: + { + int host_flags = arg2 & (~(TARGET_O_NONBLOCK | TARGET_O_CLOEXEC)); + if (arg2 & TARGET_O_NONBLOCK) { + host_flags |= O_NONBLOCK; + } + if (arg2 & TARGET_O_CLOEXEC) { + host_flags |= O_CLOEXEC; + } + ret = get_errno(eventfd(arg1, host_flags)); + break; + } +#endif +#endif /* CONFIG_EVENTFD */ +#if defined(CONFIG_FALLOCATE) && defined(TARGET_NR_fallocate) + case TARGET_NR_fallocate: +#if TARGET_ABI_BITS == 32 + ret = get_errno(fallocate(arg1, arg2, target_offset64(arg3, arg4), + target_offset64(arg5, arg6))); +#else + ret = get_errno(fallocate(arg1, arg2, arg3, arg4)); +#endif + break; +#endif +#if defined(CONFIG_SYNC_FILE_RANGE) +#if defined(TARGET_NR_sync_file_range) + case TARGET_NR_sync_file_range: +#if TARGET_ABI_BITS == 32 +#if defined(TARGET_MIPS) + ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), + target_offset64(arg5, arg6), arg7)); +#else + ret = get_errno(sync_file_range(arg1, target_offset64(arg2, arg3), + target_offset64(arg4, arg5), arg6)); +#endif /* !TARGET_MIPS */ +#else + ret = get_errno(sync_file_range(arg1, arg2, arg3, arg4)); +#endif + break; +#endif +#if defined(TARGET_NR_sync_file_range2) + case TARGET_NR_sync_file_range2: + /* This is like sync_file_range but the arguments are reordered */ +#if TARGET_ABI_BITS == 32 + ret = get_errno(sync_file_range(arg1, target_offset64(arg3, arg4), + target_offset64(arg5, arg6), arg2)); +#else + ret = get_errno(sync_file_range(arg1, arg3, arg4, arg2)); +#endif + break; +#endif +#endif +#if defined(CONFIG_EPOLL) +#if defined(TARGET_NR_epoll_create) + case TARGET_NR_epoll_create: + ret = get_errno(epoll_create(arg1)); + break; +#endif +#if defined(TARGET_NR_epoll_create1) && defined(CONFIG_EPOLL_CREATE1) + case TARGET_NR_epoll_create1: + ret = get_errno(epoll_create1(arg1)); + break; +#endif +#if defined(TARGET_NR_epoll_ctl) + case TARGET_NR_epoll_ctl: + { + struct epoll_event ep; + struct epoll_event *epp = 0; + if (arg4) { + struct target_epoll_event *target_ep; + if (!lock_user_struct(VERIFY_READ, target_ep, arg4, 1)) { + goto efault; + } + ep.events = tswap32(target_ep->events); + /* The epoll_data_t union is just opaque data to the kernel, + * so we transfer all 64 bits across and need not worry what + * actual data type it is. + */ + ep.data.u64 = tswap64(target_ep->data.u64); + unlock_user_struct(target_ep, arg4, 0); + epp = &ep; + } + ret = get_errno(epoll_ctl(arg1, arg2, arg3, epp)); + break; + } +#endif + +#if defined(TARGET_NR_epoll_pwait) && defined(CONFIG_EPOLL_PWAIT) +#define IMPLEMENT_EPOLL_PWAIT +#endif +#if defined(TARGET_NR_epoll_wait) || defined(IMPLEMENT_EPOLL_PWAIT) +#if defined(TARGET_NR_epoll_wait) + case TARGET_NR_epoll_wait: +#endif +#if defined(IMPLEMENT_EPOLL_PWAIT) + case TARGET_NR_epoll_pwait: +#endif + { + struct target_epoll_event *target_ep; + struct epoll_event *ep; + int epfd = arg1; + int maxevents = arg3; + int timeout = arg4; + + target_ep = lock_user(VERIFY_WRITE, arg2, + maxevents * sizeof(struct target_epoll_event), 1); + if (!target_ep) { + goto efault; + } + + ep = alloca(maxevents * sizeof(struct epoll_event)); + + switch (num) { +#if defined(IMPLEMENT_EPOLL_PWAIT) + case TARGET_NR_epoll_pwait: + { + target_sigset_t *target_set; + sigset_t _set, *set = &_set; + + if (arg5) { + target_set = lock_user(VERIFY_READ, arg5, + sizeof(target_sigset_t), 1); + if (!target_set) { + unlock_user(target_ep, arg2, 0); + goto efault; + } + target_to_host_sigset(set, target_set); + unlock_user(target_set, arg5, 0); + } else { + set = NULL; + } + + ret = get_errno(epoll_pwait(epfd, ep, maxevents, timeout, set)); + break; + } +#endif +#if defined(TARGET_NR_epoll_wait) + case TARGET_NR_epoll_wait: + ret = get_errno(epoll_wait(epfd, ep, maxevents, timeout)); + break; +#endif + default: + ret = -TARGET_ENOSYS; + } + if (!is_error(ret)) { + int i; + for (i = 0; i < ret; i++) { + target_ep[i].events = tswap32(ep[i].events); + target_ep[i].data.u64 = tswap64(ep[i].data.u64); + } + } + unlock_user(target_ep, arg2, ret * sizeof(struct target_epoll_event)); + break; + } +#endif +#endif +#ifdef TARGET_NR_prlimit64 + case TARGET_NR_prlimit64: + { + /* args: pid, resource number, ptr to new rlimit, ptr to old rlimit */ + struct target_rlimit64 *target_rnew, *target_rold; + struct host_rlimit64 rnew, rold, *rnewp = 0; + int resource = target_to_host_resource(arg2); + if (arg3) { + if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) { + goto efault; + } + rnew.rlim_cur = tswap64(target_rnew->rlim_cur); + rnew.rlim_max = tswap64(target_rnew->rlim_max); + unlock_user_struct(target_rnew, arg3, 0); + rnewp = &rnew; + } + + ret = get_errno(sys_prlimit64(arg1, resource, rnewp, arg4 ? &rold : 0)); + if (!is_error(ret) && arg4) { + if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) { + goto efault; + } + target_rold->rlim_cur = tswap64(rold.rlim_cur); + target_rold->rlim_max = tswap64(rold.rlim_max); + unlock_user_struct(target_rold, arg4, 1); + } + break; + } +#endif +#ifdef TARGET_NR_gethostname + case TARGET_NR_gethostname: + { + char *name = lock_user(VERIFY_WRITE, arg1, arg2, 0); + if (name) { + ret = get_errno(gethostname(name, arg2)); + unlock_user(name, arg1, arg2); + } else { + ret = -TARGET_EFAULT; + } + break; + } +#endif +#ifdef TARGET_NR_atomic_cmpxchg_32 + case TARGET_NR_atomic_cmpxchg_32: + { + /* should use start_exclusive from main.c */ + abi_ulong mem_value; + if (get_user_u32(mem_value, arg6)) { + target_siginfo_t info; + info.si_signo = SIGSEGV; + info.si_errno = 0; + info.si_code = TARGET_SEGV_MAPERR; + info._sifields._sigfault._addr = arg6; + queue_signal((CPUArchState *)cpu_env, info.si_signo, &info); + ret = 0xdeadbeef; + + } + if (mem_value == arg2) + put_user_u32(arg1, arg6); + ret = mem_value; + break; + } +#endif +#ifdef TARGET_NR_atomic_barrier + case TARGET_NR_atomic_barrier: + { + /* Like the kernel implementation and the qemu arm barrier, no-op this? */ + ret = 0; + break; + } +#endif + +#ifdef TARGET_NR_timer_create + case TARGET_NR_timer_create: + { + /* args: clockid_t clockid, struct sigevent *sevp, timer_t *timerid */ + + struct sigevent host_sevp = { {0}, }, *phost_sevp = NULL; + + int clkid = arg1; + int timer_index = next_free_host_timer(); + + if (timer_index < 0) { + ret = -TARGET_EAGAIN; + } else { + timer_t *phtimer = g_posix_timers + timer_index; + + if (arg2) { + phost_sevp = &host_sevp; + ret = target_to_host_sigevent(phost_sevp, arg2); + if (ret != 0) { + break; + } + } + + ret = get_errno(timer_create(clkid, phost_sevp, phtimer)); + if (ret) { + phtimer = NULL; + } else { + if (put_user(TIMER_MAGIC | timer_index, arg3, target_timer_t)) { + goto efault; + } + } + } + break; + } +#endif + +#ifdef TARGET_NR_timer_settime + case TARGET_NR_timer_settime: + { + /* args: timer_t timerid, int flags, const struct itimerspec *new_value, + * struct itimerspec * old_value */ + target_timer_t timerid = get_timer_id(arg1); + + if (timerid < 0) { + ret = timerid; + } else if (arg3 == 0) { + ret = -TARGET_EINVAL; + } else { + timer_t htimer = g_posix_timers[timerid]; + struct itimerspec hspec_new = {{0},}, hspec_old = {{0},}; + + target_to_host_itimerspec(&hspec_new, arg3); + ret = get_errno( + timer_settime(htimer, arg2, &hspec_new, &hspec_old)); + host_to_target_itimerspec(arg2, &hspec_old); + } + break; + } +#endif + +#ifdef TARGET_NR_timer_gettime + case TARGET_NR_timer_gettime: + { + /* args: timer_t timerid, struct itimerspec *curr_value */ + target_timer_t timerid = get_timer_id(arg1); + + if (timerid < 0) { + ret = timerid; + } else if (!arg2) { + ret = -TARGET_EFAULT; + } else { + timer_t htimer = g_posix_timers[timerid]; + struct itimerspec hspec; + ret = get_errno(timer_gettime(htimer, &hspec)); + + if (host_to_target_itimerspec(arg2, &hspec)) { + ret = -TARGET_EFAULT; + } + } + break; + } +#endif + +#ifdef TARGET_NR_timer_getoverrun + case TARGET_NR_timer_getoverrun: + { + /* args: timer_t timerid */ + target_timer_t timerid = get_timer_id(arg1); + + if (timerid < 0) { + ret = timerid; + } else { + timer_t htimer = g_posix_timers[timerid]; + ret = get_errno(timer_getoverrun(htimer)); + } + break; + } +#endif + +#ifdef TARGET_NR_timer_delete + case TARGET_NR_timer_delete: + { + /* args: timer_t timerid */ + target_timer_t timerid = get_timer_id(arg1); + + if (timerid < 0) { + ret = timerid; + } else { + timer_t htimer = g_posix_timers[timerid]; + ret = get_errno(timer_delete(htimer)); + g_posix_timers[timerid] = 0; + } + break; + } +#endif + +#if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD) + case TARGET_NR_timerfd_create: + ret = get_errno(timerfd_create(arg1, + target_to_host_bitmask(arg2, fcntl_flags_tbl))); + break; +#endif + +#if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD) + case TARGET_NR_timerfd_gettime: + { + struct itimerspec its_curr; + + ret = get_errno(timerfd_gettime(arg1, &its_curr)); + + if (arg2 && host_to_target_itimerspec(arg2, &its_curr)) { + goto efault; + } + } + break; +#endif + +#if defined(TARGET_NR_timerfd_settime) && defined(CONFIG_TIMERFD) + case TARGET_NR_timerfd_settime: + { + struct itimerspec its_new, its_old, *p_new; + + if (arg3) { + if (target_to_host_itimerspec(&its_new, arg3)) { + goto efault; + } + p_new = &its_new; + } else { + p_new = NULL; + } + + ret = get_errno(timerfd_settime(arg1, arg2, p_new, &its_old)); + + if (arg4 && host_to_target_itimerspec(arg4, &its_old)) { + goto efault; + } + } + break; +#endif + +#if defined(TARGET_NR_ioprio_get) && defined(__NR_ioprio_get) + case TARGET_NR_ioprio_get: + ret = get_errno(ioprio_get(arg1, arg2)); + break; +#endif + +#if defined(TARGET_NR_ioprio_set) && defined(__NR_ioprio_set) + case TARGET_NR_ioprio_set: + ret = get_errno(ioprio_set(arg1, arg2, arg3)); + break; +#endif + +#if defined(TARGET_NR_setns) && defined(CONFIG_SETNS) + case TARGET_NR_setns: + ret = get_errno(setns(arg1, arg2)); + break; +#endif +#if defined(TARGET_NR_unshare) && defined(CONFIG_SETNS) + case TARGET_NR_unshare: + ret = get_errno(unshare(arg1)); + break; +#endif + + default: + unimplemented: + gemu_log("qemu: Unsupported syscall: %d\n", num); +#if defined(TARGET_NR_setxattr) || defined(TARGET_NR_get_thread_area) || defined(TARGET_NR_getdomainname) || defined(TARGET_NR_set_robust_list) + unimplemented_nowarn: +#endif + ret = -TARGET_ENOSYS; + break; + } +fail: +#ifdef DEBUG + gemu_log(" = " TARGET_ABI_FMT_ld "\n", ret); +#endif + if(do_strace) + print_syscall_ret(num, ret); + return ret; +efault: + ret = -TARGET_EFAULT; + goto fail; +} |