diff options
Diffstat (limited to 'qemu/linux-user/linuxload.c')
| -rw-r--r-- | qemu/linux-user/linuxload.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/qemu/linux-user/linuxload.c b/qemu/linux-user/linuxload.c deleted file mode 100644 index 6f0d6054c..000000000 --- a/qemu/linux-user/linuxload.c +++ /dev/null @@ -1,167 +0,0 @@ -/* Code for loading Linux executables. Mostly linux kernel code. */ - -#include "qemu/osdep.h" - -#include "qemu.h" - -#define NGROUPS 32 - -/* ??? This should really be somewhere else. */ -abi_long memcpy_to_target(abi_ulong dest, const void *src, - unsigned long len) -{ - void *host_ptr; - - host_ptr = lock_user(VERIFY_WRITE, dest, len, 0); - if (!host_ptr) - return -TARGET_EFAULT; - memcpy(host_ptr, src, len); - unlock_user(host_ptr, dest, 1); - return 0; -} - -static int count(char ** vec) -{ - int i; - - for(i = 0; *vec; i++) { - vec++; - } - - return(i); -} - -static int prepare_binprm(struct linux_binprm *bprm) -{ - struct stat st; - int mode; - int retval; - - if(fstat(bprm->fd, &st) < 0) { - return(-errno); - } - - mode = st.st_mode; - if(!S_ISREG(mode)) { /* Must be regular file */ - return(-EACCES); - } - if(!(mode & 0111)) { /* Must have at least one execute bit set */ - return(-EACCES); - } - - bprm->e_uid = geteuid(); - bprm->e_gid = getegid(); - - /* Set-uid? */ - if(mode & S_ISUID) { - bprm->e_uid = st.st_uid; - } - - /* Set-gid? */ - /* - * If setgid is set but no group execute bit then this - * is a candidate for mandatory locking, not a setgid - * executable. - */ - if ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP)) { - bprm->e_gid = st.st_gid; - } - - retval = read(bprm->fd, bprm->buf, BPRM_BUF_SIZE); - if (retval < 0) { - perror("prepare_binprm"); - exit(-1); - } - if (retval < BPRM_BUF_SIZE) { - /* Make sure the rest of the loader won't read garbage. */ - memset(bprm->buf + retval, 0, BPRM_BUF_SIZE - retval); - } - return retval; -} - -/* Construct the envp and argv tables on the target stack. */ -abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp, - abi_ulong stringp, int push_ptr) -{ - TaskState *ts = (TaskState *)thread_cpu->opaque; - int n = sizeof(abi_ulong); - abi_ulong envp; - abi_ulong argv; - - sp -= (envc + 1) * n; - envp = sp; - sp -= (argc + 1) * n; - argv = sp; - if (push_ptr) { - /* FIXME - handle put_user() failures */ - sp -= n; - put_user_ual(envp, sp); - sp -= n; - put_user_ual(argv, sp); - } - sp -= n; - /* FIXME - handle put_user() failures */ - put_user_ual(argc, sp); - ts->info->arg_start = stringp; - while (argc-- > 0) { - /* FIXME - handle put_user() failures */ - put_user_ual(stringp, argv); - argv += n; - stringp += target_strlen(stringp) + 1; - } - ts->info->arg_end = stringp; - /* FIXME - handle put_user() failures */ - put_user_ual(0, argv); - while (envc-- > 0) { - /* FIXME - handle put_user() failures */ - put_user_ual(stringp, envp); - envp += n; - stringp += target_strlen(stringp) + 1; - } - /* FIXME - handle put_user() failures */ - put_user_ual(0, envp); - - return sp; -} - -int loader_exec(int fdexec, const char *filename, char **argv, char **envp, - struct target_pt_regs * regs, struct image_info *infop, - struct linux_binprm *bprm) -{ - int retval; - - bprm->fd = fdexec; - bprm->filename = (char *)filename; - bprm->argc = count(argv); - bprm->argv = argv; - bprm->envc = count(envp); - bprm->envp = envp; - - retval = prepare_binprm(bprm); - - if(retval>=0) { - if (bprm->buf[0] == 0x7f - && bprm->buf[1] == 'E' - && bprm->buf[2] == 'L' - && bprm->buf[3] == 'F') { - retval = load_elf_binary(bprm, infop); -#if defined(TARGET_HAS_BFLT) - } else if (bprm->buf[0] == 'b' - && bprm->buf[1] == 'F' - && bprm->buf[2] == 'L' - && bprm->buf[3] == 'T') { - retval = load_flt_binary(bprm, infop); -#endif - } else { - return -ENOEXEC; - } - } - - if(retval>=0) { - /* success. Initialize important registers */ - do_init_thread(regs, infop); - return retval; - } - - return(retval); -} |