From bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 Mon Sep 17 00:00:00 2001 From: RajithaY Date: Tue, 25 Apr 2017 03:31:15 -0700 Subject: Adding qemu as a submodule of KVMFORNFV This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY --- qemu/hw/9pfs/9p-handle.c | 709 -------- qemu/hw/9pfs/9p-local.c | 1282 --------------- qemu/hw/9pfs/9p-posix-acl.c | 184 --- qemu/hw/9pfs/9p-proxy.c | 1220 -------------- qemu/hw/9pfs/9p-proxy.h | 95 -- qemu/hw/9pfs/9p-synth.c | 574 ------- qemu/hw/9pfs/9p-synth.h | 51 - qemu/hw/9pfs/9p-xattr-user.c | 127 -- qemu/hw/9pfs/9p-xattr.c | 164 -- qemu/hw/9pfs/9p-xattr.h | 120 -- qemu/hw/9pfs/9p.c | 3380 --------------------------------------- qemu/hw/9pfs/9p.h | 324 ---- qemu/hw/9pfs/Makefile.objs | 9 - qemu/hw/9pfs/codir.c | 169 -- qemu/hw/9pfs/cofile.c | 276 ---- qemu/hw/9pfs/cofs.c | 365 ----- qemu/hw/9pfs/coth.c | 42 - qemu/hw/9pfs/coth.h | 99 -- qemu/hw/9pfs/coxattr.c | 108 -- qemu/hw/9pfs/virtio-9p-device.c | 211 --- qemu/hw/9pfs/virtio-9p.h | 31 - 21 files changed, 9540 deletions(-) delete mode 100644 qemu/hw/9pfs/9p-handle.c delete mode 100644 qemu/hw/9pfs/9p-local.c delete mode 100644 qemu/hw/9pfs/9p-posix-acl.c delete mode 100644 qemu/hw/9pfs/9p-proxy.c delete mode 100644 qemu/hw/9pfs/9p-proxy.h delete mode 100644 qemu/hw/9pfs/9p-synth.c delete mode 100644 qemu/hw/9pfs/9p-synth.h delete mode 100644 qemu/hw/9pfs/9p-xattr-user.c delete mode 100644 qemu/hw/9pfs/9p-xattr.c delete mode 100644 qemu/hw/9pfs/9p-xattr.h delete mode 100644 qemu/hw/9pfs/9p.c delete mode 100644 qemu/hw/9pfs/9p.h delete mode 100644 qemu/hw/9pfs/Makefile.objs delete mode 100644 qemu/hw/9pfs/codir.c delete mode 100644 qemu/hw/9pfs/cofile.c delete mode 100644 qemu/hw/9pfs/cofs.c delete mode 100644 qemu/hw/9pfs/coth.c delete mode 100644 qemu/hw/9pfs/coth.h delete mode 100644 qemu/hw/9pfs/coxattr.c delete mode 100644 qemu/hw/9pfs/virtio-9p-device.c delete mode 100644 qemu/hw/9pfs/virtio-9p.h (limited to 'qemu/hw/9pfs') diff --git a/qemu/hw/9pfs/9p-handle.c b/qemu/hw/9pfs/9p-handle.c deleted file mode 100644 index 894041488..000000000 --- a/qemu/hw/9pfs/9p-handle.c +++ /dev/null @@ -1,709 +0,0 @@ -/* - * 9p handle callback - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "9p.h" -#include "9p-xattr.h" -#include -#include -#include -#include -#include -#include "qemu/xattr.h" -#include "qemu/cutils.h" -#include "qemu/error-report.h" -#include -#ifdef CONFIG_LINUX_MAGIC_H -#include -#endif -#include - -#ifndef XFS_SUPER_MAGIC -#define XFS_SUPER_MAGIC 0x58465342 -#endif -#ifndef EXT2_SUPER_MAGIC -#define EXT2_SUPER_MAGIC 0xEF53 -#endif -#ifndef REISERFS_SUPER_MAGIC -#define REISERFS_SUPER_MAGIC 0x52654973 -#endif -#ifndef BTRFS_SUPER_MAGIC -#define BTRFS_SUPER_MAGIC 0x9123683E -#endif - -struct handle_data { - int mountfd; - int handle_bytes; -}; - -static inline int name_to_handle(int dirfd, const char *name, - struct file_handle *fh, int *mnt_id, int flags) -{ - return name_to_handle_at(dirfd, name, fh, mnt_id, flags); -} - -static inline int open_by_handle(int mountfd, const char *fh, int flags) -{ - return open_by_handle_at(mountfd, (struct file_handle *)fh, flags); -} - -static int handle_update_file_cred(int dirfd, const char *name, FsCred *credp) -{ - int fd, ret; - fd = openat(dirfd, name, O_NONBLOCK | O_NOFOLLOW); - if (fd < 0) { - return fd; - } - ret = fchownat(fd, "", credp->fc_uid, credp->fc_gid, AT_EMPTY_PATH); - if (ret < 0) { - goto err_out; - } - ret = fchmod(fd, credp->fc_mode & 07777); -err_out: - close(fd); - return ret; -} - - -static int handle_lstat(FsContext *fs_ctx, V9fsPath *fs_path, - struct stat *stbuf) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)fs_ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_PATH); - if (fd < 0) { - return fd; - } - ret = fstatat(fd, "", stbuf, AT_EMPTY_PATH); - close(fd); - return ret; -} - -static ssize_t handle_readlink(FsContext *fs_ctx, V9fsPath *fs_path, - char *buf, size_t bufsz) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)fs_ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_PATH); - if (fd < 0) { - return fd; - } - ret = readlinkat(fd, "", buf, bufsz); - close(fd); - return ret; -} - -static int handle_close(FsContext *ctx, V9fsFidOpenState *fs) -{ - return close(fs->fd); -} - -static int handle_closedir(FsContext *ctx, V9fsFidOpenState *fs) -{ - return closedir(fs->dir); -} - -static int handle_open(FsContext *ctx, V9fsPath *fs_path, - int flags, V9fsFidOpenState *fs) -{ - struct handle_data *data = (struct handle_data *)ctx->private; - - fs->fd = open_by_handle(data->mountfd, fs_path->data, flags); - return fs->fd; -} - -static int handle_opendir(FsContext *ctx, - V9fsPath *fs_path, V9fsFidOpenState *fs) -{ - int ret; - ret = handle_open(ctx, fs_path, O_DIRECTORY, fs); - if (ret < 0) { - return -1; - } - fs->dir = fdopendir(ret); - if (!fs->dir) { - return -1; - } - return 0; -} - -static void handle_rewinddir(FsContext *ctx, V9fsFidOpenState *fs) -{ - rewinddir(fs->dir); -} - -static off_t handle_telldir(FsContext *ctx, V9fsFidOpenState *fs) -{ - return telldir(fs->dir); -} - -static int handle_readdir_r(FsContext *ctx, V9fsFidOpenState *fs, - struct dirent *entry, - struct dirent **result) -{ - return readdir_r(fs->dir, entry, result); -} - -static void handle_seekdir(FsContext *ctx, V9fsFidOpenState *fs, off_t off) -{ - seekdir(fs->dir, off); -} - -static ssize_t handle_preadv(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ -#ifdef CONFIG_PREADV - return preadv(fs->fd, iov, iovcnt, offset); -#else - int err = lseek(fs->fd, offset, SEEK_SET); - if (err == -1) { - return err; - } else { - return readv(fs->fd, iov, iovcnt); - } -#endif -} - -static ssize_t handle_pwritev(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ - ssize_t ret; -#ifdef CONFIG_PREADV - ret = pwritev(fs->fd, iov, iovcnt, offset); -#else - int err = lseek(fs->fd, offset, SEEK_SET); - if (err == -1) { - return err; - } else { - ret = writev(fs->fd, iov, iovcnt); - } -#endif -#ifdef CONFIG_SYNC_FILE_RANGE - if (ret > 0 && ctx->export_flags & V9FS_IMMEDIATE_WRITEOUT) { - /* - * Initiate a writeback. This is not a data integrity sync. - * We want to ensure that we don't leave dirty pages in the cache - * after write when writeout=immediate is sepcified. - */ - sync_file_range(fs->fd, offset, ret, - SYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE); - } -#endif - return ret; -} - -static int handle_chmod(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)fs_ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_NONBLOCK); - if (fd < 0) { - return fd; - } - ret = fchmod(fd, credp->fc_mode); - close(fd); - return ret; -} - -static int handle_mknod(FsContext *fs_ctx, V9fsPath *dir_path, - const char *name, FsCred *credp) -{ - int dirfd, ret; - struct handle_data *data = (struct handle_data *)fs_ctx->private; - - dirfd = open_by_handle(data->mountfd, dir_path->data, O_PATH); - if (dirfd < 0) { - return dirfd; - } - ret = mknodat(dirfd, name, credp->fc_mode, credp->fc_rdev); - if (!ret) { - ret = handle_update_file_cred(dirfd, name, credp); - } - close(dirfd); - return ret; -} - -static int handle_mkdir(FsContext *fs_ctx, V9fsPath *dir_path, - const char *name, FsCred *credp) -{ - int dirfd, ret; - struct handle_data *data = (struct handle_data *)fs_ctx->private; - - dirfd = open_by_handle(data->mountfd, dir_path->data, O_PATH); - if (dirfd < 0) { - return dirfd; - } - ret = mkdirat(dirfd, name, credp->fc_mode); - if (!ret) { - ret = handle_update_file_cred(dirfd, name, credp); - } - close(dirfd); - return ret; -} - -static int handle_fstat(FsContext *fs_ctx, int fid_type, - V9fsFidOpenState *fs, struct stat *stbuf) -{ - int fd; - - if (fid_type == P9_FID_DIR) { - fd = dirfd(fs->dir); - } else { - fd = fs->fd; - } - return fstat(fd, stbuf); -} - -static int handle_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name, - int flags, FsCred *credp, V9fsFidOpenState *fs) -{ - int ret; - int dirfd, fd; - struct handle_data *data = (struct handle_data *)fs_ctx->private; - - dirfd = open_by_handle(data->mountfd, dir_path->data, O_PATH); - if (dirfd < 0) { - return dirfd; - } - fd = openat(dirfd, name, flags | O_NOFOLLOW, credp->fc_mode); - if (fd >= 0) { - ret = handle_update_file_cred(dirfd, name, credp); - if (ret < 0) { - close(fd); - fd = ret; - } else { - fs->fd = fd; - } - } - close(dirfd); - return fd; -} - - -static int handle_symlink(FsContext *fs_ctx, const char *oldpath, - V9fsPath *dir_path, const char *name, FsCred *credp) -{ - int fd, dirfd, ret; - struct handle_data *data = (struct handle_data *)fs_ctx->private; - - dirfd = open_by_handle(data->mountfd, dir_path->data, O_PATH); - if (dirfd < 0) { - return dirfd; - } - ret = symlinkat(oldpath, dirfd, name); - if (!ret) { - fd = openat(dirfd, name, O_PATH | O_NOFOLLOW); - if (fd < 0) { - ret = fd; - goto err_out; - } - ret = fchownat(fd, "", credp->fc_uid, credp->fc_gid, AT_EMPTY_PATH); - close(fd); - } -err_out: - close(dirfd); - return ret; -} - -static int handle_link(FsContext *ctx, V9fsPath *oldpath, - V9fsPath *dirpath, const char *name) -{ - int oldfd, newdirfd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - - oldfd = open_by_handle(data->mountfd, oldpath->data, O_PATH); - if (oldfd < 0) { - return oldfd; - } - newdirfd = open_by_handle(data->mountfd, dirpath->data, O_PATH); - if (newdirfd < 0) { - close(oldfd); - return newdirfd; - } - ret = linkat(oldfd, "", newdirfd, name, AT_EMPTY_PATH); - close(newdirfd); - close(oldfd); - return ret; -} - -static int handle_truncate(FsContext *ctx, V9fsPath *fs_path, off_t size) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_NONBLOCK | O_WRONLY); - if (fd < 0) { - return fd; - } - ret = ftruncate(fd, size); - close(fd); - return ret; -} - -static int handle_rename(FsContext *ctx, const char *oldpath, - const char *newpath) -{ - errno = EOPNOTSUPP; - return -1; -} - -static int handle_chown(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)fs_ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_PATH); - if (fd < 0) { - return fd; - } - ret = fchownat(fd, "", credp->fc_uid, credp->fc_gid, AT_EMPTY_PATH); - close(fd); - return ret; -} - -static int handle_utimensat(FsContext *ctx, V9fsPath *fs_path, - const struct timespec *buf) -{ - int ret; -#ifdef CONFIG_UTIMENSAT - int fd; - struct handle_data *data = (struct handle_data *)ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_NONBLOCK); - if (fd < 0) { - return fd; - } - ret = futimens(fd, buf); - close(fd); -#else - ret = -1; - errno = ENOSYS; -#endif - return ret; -} - -static int handle_remove(FsContext *ctx, const char *path) -{ - errno = EOPNOTSUPP; - return -1; -} - -static int handle_fsync(FsContext *ctx, int fid_type, - V9fsFidOpenState *fs, int datasync) -{ - int fd; - - if (fid_type == P9_FID_DIR) { - fd = dirfd(fs->dir); - } else { - fd = fs->fd; - } - - if (datasync) { - return qemu_fdatasync(fd); - } else { - return fsync(fd); - } -} - -static int handle_statfs(FsContext *ctx, V9fsPath *fs_path, - struct statfs *stbuf) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_NONBLOCK); - if (fd < 0) { - return fd; - } - ret = fstatfs(fd, stbuf); - close(fd); - return ret; -} - -static ssize_t handle_lgetxattr(FsContext *ctx, V9fsPath *fs_path, - const char *name, void *value, size_t size) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_NONBLOCK); - if (fd < 0) { - return fd; - } - ret = fgetxattr(fd, name, value, size); - close(fd); - return ret; -} - -static ssize_t handle_llistxattr(FsContext *ctx, V9fsPath *fs_path, - void *value, size_t size) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_NONBLOCK); - if (fd < 0) { - return fd; - } - ret = flistxattr(fd, value, size); - close(fd); - return ret; -} - -static int handle_lsetxattr(FsContext *ctx, V9fsPath *fs_path, const char *name, - void *value, size_t size, int flags) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_NONBLOCK); - if (fd < 0) { - return fd; - } - ret = fsetxattr(fd, name, value, size, flags); - close(fd); - return ret; -} - -static int handle_lremovexattr(FsContext *ctx, V9fsPath *fs_path, - const char *name) -{ - int fd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - - fd = open_by_handle(data->mountfd, fs_path->data, O_NONBLOCK); - if (fd < 0) { - return fd; - } - ret = fremovexattr(fd, name); - close(fd); - return ret; -} - -static int handle_name_to_path(FsContext *ctx, V9fsPath *dir_path, - const char *name, V9fsPath *target) -{ - char *buffer; - struct file_handle *fh; - int dirfd, ret, mnt_id; - struct handle_data *data = (struct handle_data *)ctx->private; - - /* "." and ".." are not allowed */ - if (!strcmp(name, ".") || !strcmp(name, "..")) { - errno = EINVAL; - return -1; - - } - if (dir_path) { - dirfd = open_by_handle(data->mountfd, dir_path->data, O_PATH); - } else { - /* relative to export root */ - buffer = rpath(ctx, "."); - dirfd = open(buffer, O_DIRECTORY); - g_free(buffer); - } - if (dirfd < 0) { - return dirfd; - } - fh = g_malloc(sizeof(struct file_handle) + data->handle_bytes); - fh->handle_bytes = data->handle_bytes; - /* add a "./" at the beginning of the path */ - buffer = g_strdup_printf("./%s", name); - /* flag = 0 imply don't follow symlink */ - ret = name_to_handle(dirfd, buffer, fh, &mnt_id, 0); - if (!ret) { - target->data = (char *)fh; - target->size = sizeof(struct file_handle) + data->handle_bytes; - } else { - g_free(fh); - } - close(dirfd); - g_free(buffer); - return ret; -} - -static int handle_renameat(FsContext *ctx, V9fsPath *olddir, - const char *old_name, V9fsPath *newdir, - const char *new_name) -{ - int olddirfd, newdirfd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - - olddirfd = open_by_handle(data->mountfd, olddir->data, O_PATH); - if (olddirfd < 0) { - return olddirfd; - } - newdirfd = open_by_handle(data->mountfd, newdir->data, O_PATH); - if (newdirfd < 0) { - close(olddirfd); - return newdirfd; - } - ret = renameat(olddirfd, old_name, newdirfd, new_name); - close(newdirfd); - close(olddirfd); - return ret; -} - -static int handle_unlinkat(FsContext *ctx, V9fsPath *dir, - const char *name, int flags) -{ - int dirfd, ret; - struct handle_data *data = (struct handle_data *)ctx->private; - int rflags; - - dirfd = open_by_handle(data->mountfd, dir->data, O_PATH); - if (dirfd < 0) { - return dirfd; - } - - rflags = 0; - if (flags & P9_DOTL_AT_REMOVEDIR) { - rflags |= AT_REMOVEDIR; - } - - ret = unlinkat(dirfd, name, rflags); - - close(dirfd); - return ret; -} - -static int handle_ioc_getversion(FsContext *ctx, V9fsPath *path, - mode_t st_mode, uint64_t *st_gen) -{ -#ifdef FS_IOC_GETVERSION - int err; - V9fsFidOpenState fid_open; - - /* - * Do not try to open special files like device nodes, fifos etc - * We can get fd for regular files and directories only - */ - if (!S_ISREG(st_mode) && !S_ISDIR(st_mode)) { - errno = ENOTTY; - return -1; - } - err = handle_open(ctx, path, O_RDONLY, &fid_open); - if (err < 0) { - return err; - } - err = ioctl(fid_open.fd, FS_IOC_GETVERSION, st_gen); - handle_close(ctx, &fid_open); - return err; -#else - errno = ENOTTY; - return -1; -#endif -} - -static int handle_init(FsContext *ctx) -{ - int ret, mnt_id; - struct statfs stbuf; - struct file_handle fh; - struct handle_data *data = g_malloc(sizeof(struct handle_data)); - - data->mountfd = open(ctx->fs_root, O_DIRECTORY); - if (data->mountfd < 0) { - ret = data->mountfd; - goto err_out; - } - ret = statfs(ctx->fs_root, &stbuf); - if (!ret) { - switch (stbuf.f_type) { - case EXT2_SUPER_MAGIC: - case BTRFS_SUPER_MAGIC: - case REISERFS_SUPER_MAGIC: - case XFS_SUPER_MAGIC: - ctx->exops.get_st_gen = handle_ioc_getversion; - break; - } - } - memset(&fh, 0, sizeof(struct file_handle)); - ret = name_to_handle(data->mountfd, ".", &fh, &mnt_id, 0); - if (ret && errno == EOVERFLOW) { - data->handle_bytes = fh.handle_bytes; - ctx->private = data; - ret = 0; - goto out; - } - /* we got 0 byte handle ? */ - ret = -1; - close(data->mountfd); -err_out: - g_free(data); -out: - return ret; -} - -static int handle_parse_opts(QemuOpts *opts, struct FsDriverEntry *fse) -{ - const char *sec_model = qemu_opt_get(opts, "security_model"); - const char *path = qemu_opt_get(opts, "path"); - - if (sec_model) { - error_report("Invalid argument security_model specified with handle fsdriver"); - return -1; - } - - if (!path) { - error_report("fsdev: No path specified"); - return -1; - } - fse->path = g_strdup(path); - return 0; - -} - -FileOperations handle_ops = { - .parse_opts = handle_parse_opts, - .init = handle_init, - .lstat = handle_lstat, - .readlink = handle_readlink, - .close = handle_close, - .closedir = handle_closedir, - .open = handle_open, - .opendir = handle_opendir, - .rewinddir = handle_rewinddir, - .telldir = handle_telldir, - .readdir_r = handle_readdir_r, - .seekdir = handle_seekdir, - .preadv = handle_preadv, - .pwritev = handle_pwritev, - .chmod = handle_chmod, - .mknod = handle_mknod, - .mkdir = handle_mkdir, - .fstat = handle_fstat, - .open2 = handle_open2, - .symlink = handle_symlink, - .link = handle_link, - .truncate = handle_truncate, - .rename = handle_rename, - .chown = handle_chown, - .utimensat = handle_utimensat, - .remove = handle_remove, - .fsync = handle_fsync, - .statfs = handle_statfs, - .lgetxattr = handle_lgetxattr, - .llistxattr = handle_llistxattr, - .lsetxattr = handle_lsetxattr, - .lremovexattr = handle_lremovexattr, - .name_to_path = handle_name_to_path, - .renameat = handle_renameat, - .unlinkat = handle_unlinkat, -}; diff --git a/qemu/hw/9pfs/9p-local.c b/qemu/hw/9pfs/9p-local.c deleted file mode 100644 index 16f45f485..000000000 --- a/qemu/hw/9pfs/9p-local.c +++ /dev/null @@ -1,1282 +0,0 @@ -/* - * 9p Posix callback - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Anthony Liguori - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "9p.h" -#include "9p-xattr.h" -#include "fsdev/qemu-fsdev.h" /* local_ops */ -#include -#include -#include -#include -#include -#include "qemu/xattr.h" -#include "qemu/cutils.h" -#include "qemu/error-report.h" -#include -#include -#ifdef CONFIG_LINUX_MAGIC_H -#include -#endif -#include - -#ifndef XFS_SUPER_MAGIC -#define XFS_SUPER_MAGIC 0x58465342 -#endif -#ifndef EXT2_SUPER_MAGIC -#define EXT2_SUPER_MAGIC 0xEF53 -#endif -#ifndef REISERFS_SUPER_MAGIC -#define REISERFS_SUPER_MAGIC 0x52654973 -#endif -#ifndef BTRFS_SUPER_MAGIC -#define BTRFS_SUPER_MAGIC 0x9123683E -#endif - -#define VIRTFS_META_DIR ".virtfs_metadata" - -static char *local_mapped_attr_path(FsContext *ctx, const char *path) -{ - int dirlen; - const char *name = strrchr(path, '/'); - if (name) { - dirlen = name - path; - ++name; - } else { - name = path; - dirlen = 0; - } - return g_strdup_printf("%s/%.*s/%s/%s", ctx->fs_root, - dirlen, path, VIRTFS_META_DIR, name); -} - -static FILE *local_fopen(const char *path, const char *mode) -{ - int fd, o_mode = 0; - FILE *fp; - int flags = O_NOFOLLOW; - /* - * only supports two modes - */ - if (mode[0] == 'r') { - flags |= O_RDONLY; - } else if (mode[0] == 'w') { - flags |= O_WRONLY | O_TRUNC | O_CREAT; - o_mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH; - } else { - return NULL; - } - fd = open(path, flags, o_mode); - if (fd == -1) { - return NULL; - } - fp = fdopen(fd, mode); - if (!fp) { - close(fd); - } - return fp; -} - -#define ATTR_MAX 100 -static void local_mapped_file_attr(FsContext *ctx, const char *path, - struct stat *stbuf) -{ - FILE *fp; - char buf[ATTR_MAX]; - char *attr_path; - - attr_path = local_mapped_attr_path(ctx, path); - fp = local_fopen(attr_path, "r"); - g_free(attr_path); - if (!fp) { - return; - } - memset(buf, 0, ATTR_MAX); - while (fgets(buf, ATTR_MAX, fp)) { - if (!strncmp(buf, "virtfs.uid", 10)) { - stbuf->st_uid = atoi(buf+11); - } else if (!strncmp(buf, "virtfs.gid", 10)) { - stbuf->st_gid = atoi(buf+11); - } else if (!strncmp(buf, "virtfs.mode", 11)) { - stbuf->st_mode = atoi(buf+12); - } else if (!strncmp(buf, "virtfs.rdev", 11)) { - stbuf->st_rdev = atoi(buf+12); - } - memset(buf, 0, ATTR_MAX); - } - fclose(fp); -} - -static int local_lstat(FsContext *fs_ctx, V9fsPath *fs_path, struct stat *stbuf) -{ - int err; - char *buffer; - char *path = fs_path->data; - - buffer = rpath(fs_ctx, path); - err = lstat(buffer, stbuf); - if (err) { - goto err_out; - } - if (fs_ctx->export_flags & V9FS_SM_MAPPED) { - /* Actual credentials are part of extended attrs */ - uid_t tmp_uid; - gid_t tmp_gid; - mode_t tmp_mode; - dev_t tmp_dev; - if (getxattr(buffer, "user.virtfs.uid", &tmp_uid, sizeof(uid_t)) > 0) { - stbuf->st_uid = le32_to_cpu(tmp_uid); - } - if (getxattr(buffer, "user.virtfs.gid", &tmp_gid, sizeof(gid_t)) > 0) { - stbuf->st_gid = le32_to_cpu(tmp_gid); - } - if (getxattr(buffer, "user.virtfs.mode", - &tmp_mode, sizeof(mode_t)) > 0) { - stbuf->st_mode = le32_to_cpu(tmp_mode); - } - if (getxattr(buffer, "user.virtfs.rdev", &tmp_dev, sizeof(dev_t)) > 0) { - stbuf->st_rdev = le64_to_cpu(tmp_dev); - } - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) { - local_mapped_file_attr(fs_ctx, path, stbuf); - } - -err_out: - g_free(buffer); - return err; -} - -static int local_create_mapped_attr_dir(FsContext *ctx, const char *path) -{ - int err; - char *attr_dir; - char *tmp_path = g_strdup(path); - - attr_dir = g_strdup_printf("%s/%s/%s", - ctx->fs_root, dirname(tmp_path), VIRTFS_META_DIR); - - err = mkdir(attr_dir, 0700); - if (err < 0 && errno == EEXIST) { - err = 0; - } - g_free(attr_dir); - g_free(tmp_path); - return err; -} - -static int local_set_mapped_file_attr(FsContext *ctx, - const char *path, FsCred *credp) -{ - FILE *fp; - int ret = 0; - char buf[ATTR_MAX]; - char *attr_path; - int uid = -1, gid = -1, mode = -1, rdev = -1; - - attr_path = local_mapped_attr_path(ctx, path); - fp = local_fopen(attr_path, "r"); - if (!fp) { - goto create_map_file; - } - memset(buf, 0, ATTR_MAX); - while (fgets(buf, ATTR_MAX, fp)) { - if (!strncmp(buf, "virtfs.uid", 10)) { - uid = atoi(buf+11); - } else if (!strncmp(buf, "virtfs.gid", 10)) { - gid = atoi(buf+11); - } else if (!strncmp(buf, "virtfs.mode", 11)) { - mode = atoi(buf+12); - } else if (!strncmp(buf, "virtfs.rdev", 11)) { - rdev = atoi(buf+12); - } - memset(buf, 0, ATTR_MAX); - } - fclose(fp); - goto update_map_file; - -create_map_file: - ret = local_create_mapped_attr_dir(ctx, path); - if (ret < 0) { - goto err_out; - } - -update_map_file: - fp = local_fopen(attr_path, "w"); - if (!fp) { - ret = -1; - goto err_out; - } - - if (credp->fc_uid != -1) { - uid = credp->fc_uid; - } - if (credp->fc_gid != -1) { - gid = credp->fc_gid; - } - if (credp->fc_mode != -1) { - mode = credp->fc_mode; - } - if (credp->fc_rdev != -1) { - rdev = credp->fc_rdev; - } - - - if (uid != -1) { - fprintf(fp, "virtfs.uid=%d\n", uid); - } - if (gid != -1) { - fprintf(fp, "virtfs.gid=%d\n", gid); - } - if (mode != -1) { - fprintf(fp, "virtfs.mode=%d\n", mode); - } - if (rdev != -1) { - fprintf(fp, "virtfs.rdev=%d\n", rdev); - } - fclose(fp); - -err_out: - g_free(attr_path); - return ret; -} - -static int local_set_xattr(const char *path, FsCred *credp) -{ - int err; - - if (credp->fc_uid != -1) { - uint32_t tmp_uid = cpu_to_le32(credp->fc_uid); - err = setxattr(path, "user.virtfs.uid", &tmp_uid, sizeof(uid_t), 0); - if (err) { - return err; - } - } - if (credp->fc_gid != -1) { - uint32_t tmp_gid = cpu_to_le32(credp->fc_gid); - err = setxattr(path, "user.virtfs.gid", &tmp_gid, sizeof(gid_t), 0); - if (err) { - return err; - } - } - if (credp->fc_mode != -1) { - uint32_t tmp_mode = cpu_to_le32(credp->fc_mode); - err = setxattr(path, "user.virtfs.mode", &tmp_mode, sizeof(mode_t), 0); - if (err) { - return err; - } - } - if (credp->fc_rdev != -1) { - uint64_t tmp_rdev = cpu_to_le64(credp->fc_rdev); - err = setxattr(path, "user.virtfs.rdev", &tmp_rdev, sizeof(dev_t), 0); - if (err) { - return err; - } - } - return 0; -} - -static int local_post_create_passthrough(FsContext *fs_ctx, const char *path, - FsCred *credp) -{ - char *buffer; - - buffer = rpath(fs_ctx, path); - if (lchown(buffer, credp->fc_uid, credp->fc_gid) < 0) { - /* - * If we fail to change ownership and if we are - * using security model none. Ignore the error - */ - if ((fs_ctx->export_flags & V9FS_SEC_MASK) != V9FS_SM_NONE) { - goto err; - } - } - - if (chmod(buffer, credp->fc_mode & 07777) < 0) { - goto err; - } - - g_free(buffer); - return 0; -err: - g_free(buffer); - return -1; -} - -static ssize_t local_readlink(FsContext *fs_ctx, V9fsPath *fs_path, - char *buf, size_t bufsz) -{ - ssize_t tsize = -1; - char *buffer; - char *path = fs_path->data; - - if ((fs_ctx->export_flags & V9FS_SM_MAPPED) || - (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE)) { - int fd; - buffer = rpath(fs_ctx, path); - fd = open(buffer, O_RDONLY | O_NOFOLLOW); - g_free(buffer); - if (fd == -1) { - return -1; - } - do { - tsize = read(fd, (void *)buf, bufsz); - } while (tsize == -1 && errno == EINTR); - close(fd); - } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) || - (fs_ctx->export_flags & V9FS_SM_NONE)) { - buffer = rpath(fs_ctx, path); - tsize = readlink(buffer, buf, bufsz); - g_free(buffer); - } - return tsize; -} - -static int local_close(FsContext *ctx, V9fsFidOpenState *fs) -{ - return close(fs->fd); -} - -static int local_closedir(FsContext *ctx, V9fsFidOpenState *fs) -{ - return closedir(fs->dir); -} - -static int local_open(FsContext *ctx, V9fsPath *fs_path, - int flags, V9fsFidOpenState *fs) -{ - char *buffer; - char *path = fs_path->data; - - buffer = rpath(ctx, path); - fs->fd = open(buffer, flags | O_NOFOLLOW); - g_free(buffer); - return fs->fd; -} - -static int local_opendir(FsContext *ctx, - V9fsPath *fs_path, V9fsFidOpenState *fs) -{ - char *buffer; - char *path = fs_path->data; - - buffer = rpath(ctx, path); - fs->dir = opendir(buffer); - g_free(buffer); - if (!fs->dir) { - return -1; - } - return 0; -} - -static void local_rewinddir(FsContext *ctx, V9fsFidOpenState *fs) -{ - rewinddir(fs->dir); -} - -static off_t local_telldir(FsContext *ctx, V9fsFidOpenState *fs) -{ - return telldir(fs->dir); -} - -static int local_readdir_r(FsContext *ctx, V9fsFidOpenState *fs, - struct dirent *entry, - struct dirent **result) -{ - int ret; - -again: - ret = readdir_r(fs->dir, entry, result); - if (ctx->export_flags & V9FS_SM_MAPPED) { - entry->d_type = DT_UNKNOWN; - } else if (ctx->export_flags & V9FS_SM_MAPPED_FILE) { - if (!ret && *result != NULL && - !strcmp(entry->d_name, VIRTFS_META_DIR)) { - /* skp the meta data directory */ - goto again; - } - entry->d_type = DT_UNKNOWN; - } - return ret; -} - -static void local_seekdir(FsContext *ctx, V9fsFidOpenState *fs, off_t off) -{ - seekdir(fs->dir, off); -} - -static ssize_t local_preadv(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ -#ifdef CONFIG_PREADV - return preadv(fs->fd, iov, iovcnt, offset); -#else - int err = lseek(fs->fd, offset, SEEK_SET); - if (err == -1) { - return err; - } else { - return readv(fs->fd, iov, iovcnt); - } -#endif -} - -static ssize_t local_pwritev(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ - ssize_t ret -; -#ifdef CONFIG_PREADV - ret = pwritev(fs->fd, iov, iovcnt, offset); -#else - int err = lseek(fs->fd, offset, SEEK_SET); - if (err == -1) { - return err; - } else { - ret = writev(fs->fd, iov, iovcnt); - } -#endif -#ifdef CONFIG_SYNC_FILE_RANGE - if (ret > 0 && ctx->export_flags & V9FS_IMMEDIATE_WRITEOUT) { - /* - * Initiate a writeback. This is not a data integrity sync. - * We want to ensure that we don't leave dirty pages in the cache - * after write when writeout=immediate is sepcified. - */ - sync_file_range(fs->fd, offset, ret, - SYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE); - } -#endif - return ret; -} - -static int local_chmod(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp) -{ - char *buffer; - int ret = -1; - char *path = fs_path->data; - - if (fs_ctx->export_flags & V9FS_SM_MAPPED) { - buffer = rpath(fs_ctx, path); - ret = local_set_xattr(buffer, credp); - g_free(buffer); - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) { - return local_set_mapped_file_attr(fs_ctx, path, credp); - } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) || - (fs_ctx->export_flags & V9FS_SM_NONE)) { - buffer = rpath(fs_ctx, path); - ret = chmod(buffer, credp->fc_mode); - g_free(buffer); - } - return ret; -} - -static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path, - const char *name, FsCred *credp) -{ - char *path; - int err = -1; - int serrno = 0; - V9fsString fullname; - char *buffer = NULL; - - v9fs_string_init(&fullname); - v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name); - path = fullname.data; - - /* Determine the security model */ - if (fs_ctx->export_flags & V9FS_SM_MAPPED) { - buffer = rpath(fs_ctx, path); - err = mknod(buffer, SM_LOCAL_MODE_BITS|S_IFREG, 0); - if (err == -1) { - goto out; - } - err = local_set_xattr(buffer, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) { - - buffer = rpath(fs_ctx, path); - err = mknod(buffer, SM_LOCAL_MODE_BITS|S_IFREG, 0); - if (err == -1) { - goto out; - } - err = local_set_mapped_file_attr(fs_ctx, path, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) || - (fs_ctx->export_flags & V9FS_SM_NONE)) { - buffer = rpath(fs_ctx, path); - err = mknod(buffer, credp->fc_mode, credp->fc_rdev); - if (err == -1) { - goto out; - } - err = local_post_create_passthrough(fs_ctx, path, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } - goto out; - -err_end: - remove(buffer); - errno = serrno; -out: - g_free(buffer); - v9fs_string_free(&fullname); - return err; -} - -static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path, - const char *name, FsCred *credp) -{ - char *path; - int err = -1; - int serrno = 0; - V9fsString fullname; - char *buffer = NULL; - - v9fs_string_init(&fullname); - v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name); - path = fullname.data; - - /* Determine the security model */ - if (fs_ctx->export_flags & V9FS_SM_MAPPED) { - buffer = rpath(fs_ctx, path); - err = mkdir(buffer, SM_LOCAL_DIR_MODE_BITS); - if (err == -1) { - goto out; - } - credp->fc_mode = credp->fc_mode|S_IFDIR; - err = local_set_xattr(buffer, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) { - buffer = rpath(fs_ctx, path); - err = mkdir(buffer, SM_LOCAL_DIR_MODE_BITS); - if (err == -1) { - goto out; - } - credp->fc_mode = credp->fc_mode|S_IFDIR; - err = local_set_mapped_file_attr(fs_ctx, path, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) || - (fs_ctx->export_flags & V9FS_SM_NONE)) { - buffer = rpath(fs_ctx, path); - err = mkdir(buffer, credp->fc_mode); - if (err == -1) { - goto out; - } - err = local_post_create_passthrough(fs_ctx, path, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } - goto out; - -err_end: - remove(buffer); - errno = serrno; -out: - g_free(buffer); - v9fs_string_free(&fullname); - return err; -} - -static int local_fstat(FsContext *fs_ctx, int fid_type, - V9fsFidOpenState *fs, struct stat *stbuf) -{ - int err, fd; - - if (fid_type == P9_FID_DIR) { - fd = dirfd(fs->dir); - } else { - fd = fs->fd; - } - - err = fstat(fd, stbuf); - if (err) { - return err; - } - if (fs_ctx->export_flags & V9FS_SM_MAPPED) { - /* Actual credentials are part of extended attrs */ - uid_t tmp_uid; - gid_t tmp_gid; - mode_t tmp_mode; - dev_t tmp_dev; - - if (fgetxattr(fd, "user.virtfs.uid", &tmp_uid, sizeof(uid_t)) > 0) { - stbuf->st_uid = le32_to_cpu(tmp_uid); - } - if (fgetxattr(fd, "user.virtfs.gid", &tmp_gid, sizeof(gid_t)) > 0) { - stbuf->st_gid = le32_to_cpu(tmp_gid); - } - if (fgetxattr(fd, "user.virtfs.mode", &tmp_mode, sizeof(mode_t)) > 0) { - stbuf->st_mode = le32_to_cpu(tmp_mode); - } - if (fgetxattr(fd, "user.virtfs.rdev", &tmp_dev, sizeof(dev_t)) > 0) { - stbuf->st_rdev = le64_to_cpu(tmp_dev); - } - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) { - errno = EOPNOTSUPP; - return -1; - } - return err; -} - -static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name, - int flags, FsCred *credp, V9fsFidOpenState *fs) -{ - char *path; - int fd = -1; - int err = -1; - int serrno = 0; - V9fsString fullname; - char *buffer = NULL; - - /* - * Mark all the open to not follow symlinks - */ - flags |= O_NOFOLLOW; - - v9fs_string_init(&fullname); - v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name); - path = fullname.data; - - /* Determine the security model */ - if (fs_ctx->export_flags & V9FS_SM_MAPPED) { - buffer = rpath(fs_ctx, path); - fd = open(buffer, flags, SM_LOCAL_MODE_BITS); - if (fd == -1) { - err = fd; - goto out; - } - credp->fc_mode = credp->fc_mode|S_IFREG; - /* Set cleint credentials in xattr */ - err = local_set_xattr(buffer, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) { - buffer = rpath(fs_ctx, path); - fd = open(buffer, flags, SM_LOCAL_MODE_BITS); - if (fd == -1) { - err = fd; - goto out; - } - credp->fc_mode = credp->fc_mode|S_IFREG; - /* Set client credentials in .virtfs_metadata directory files */ - err = local_set_mapped_file_attr(fs_ctx, path, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) || - (fs_ctx->export_flags & V9FS_SM_NONE)) { - buffer = rpath(fs_ctx, path); - fd = open(buffer, flags, credp->fc_mode); - if (fd == -1) { - err = fd; - goto out; - } - err = local_post_create_passthrough(fs_ctx, path, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } - err = fd; - fs->fd = fd; - goto out; - -err_end: - close(fd); - remove(buffer); - errno = serrno; -out: - g_free(buffer); - v9fs_string_free(&fullname); - return err; -} - - -static int local_symlink(FsContext *fs_ctx, const char *oldpath, - V9fsPath *dir_path, const char *name, FsCred *credp) -{ - int err = -1; - int serrno = 0; - char *newpath; - V9fsString fullname; - char *buffer = NULL; - - v9fs_string_init(&fullname); - v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name); - newpath = fullname.data; - - /* Determine the security model */ - if (fs_ctx->export_flags & V9FS_SM_MAPPED) { - int fd; - ssize_t oldpath_size, write_size; - buffer = rpath(fs_ctx, newpath); - fd = open(buffer, O_CREAT|O_EXCL|O_RDWR|O_NOFOLLOW, SM_LOCAL_MODE_BITS); - if (fd == -1) { - err = fd; - goto out; - } - /* Write the oldpath (target) to the file. */ - oldpath_size = strlen(oldpath); - do { - write_size = write(fd, (void *)oldpath, oldpath_size); - } while (write_size == -1 && errno == EINTR); - - if (write_size != oldpath_size) { - serrno = errno; - close(fd); - err = -1; - goto err_end; - } - close(fd); - /* Set cleint credentials in symlink's xattr */ - credp->fc_mode = credp->fc_mode|S_IFLNK; - err = local_set_xattr(buffer, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) { - int fd; - ssize_t oldpath_size, write_size; - buffer = rpath(fs_ctx, newpath); - fd = open(buffer, O_CREAT|O_EXCL|O_RDWR|O_NOFOLLOW, SM_LOCAL_MODE_BITS); - if (fd == -1) { - err = fd; - goto out; - } - /* Write the oldpath (target) to the file. */ - oldpath_size = strlen(oldpath); - do { - write_size = write(fd, (void *)oldpath, oldpath_size); - } while (write_size == -1 && errno == EINTR); - - if (write_size != oldpath_size) { - serrno = errno; - close(fd); - err = -1; - goto err_end; - } - close(fd); - /* Set cleint credentials in symlink's xattr */ - credp->fc_mode = credp->fc_mode|S_IFLNK; - err = local_set_mapped_file_attr(fs_ctx, newpath, credp); - if (err == -1) { - serrno = errno; - goto err_end; - } - } else if ((fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) || - (fs_ctx->export_flags & V9FS_SM_NONE)) { - buffer = rpath(fs_ctx, newpath); - err = symlink(oldpath, buffer); - if (err) { - goto out; - } - err = lchown(buffer, credp->fc_uid, credp->fc_gid); - if (err == -1) { - /* - * If we fail to change ownership and if we are - * using security model none. Ignore the error - */ - if ((fs_ctx->export_flags & V9FS_SEC_MASK) != V9FS_SM_NONE) { - serrno = errno; - goto err_end; - } else - err = 0; - } - } - goto out; - -err_end: - remove(buffer); - errno = serrno; -out: - g_free(buffer); - v9fs_string_free(&fullname); - return err; -} - -static int local_link(FsContext *ctx, V9fsPath *oldpath, - V9fsPath *dirpath, const char *name) -{ - int ret; - V9fsString newpath; - char *buffer, *buffer1; - - v9fs_string_init(&newpath); - v9fs_string_sprintf(&newpath, "%s/%s", dirpath->data, name); - - buffer = rpath(ctx, oldpath->data); - buffer1 = rpath(ctx, newpath.data); - ret = link(buffer, buffer1); - g_free(buffer); - g_free(buffer1); - - /* now link the virtfs_metadata files */ - if (!ret && (ctx->export_flags & V9FS_SM_MAPPED_FILE)) { - /* Link the .virtfs_metadata files. Create the metada directory */ - ret = local_create_mapped_attr_dir(ctx, newpath.data); - if (ret < 0) { - goto err_out; - } - buffer = local_mapped_attr_path(ctx, oldpath->data); - buffer1 = local_mapped_attr_path(ctx, newpath.data); - ret = link(buffer, buffer1); - g_free(buffer); - g_free(buffer1); - if (ret < 0 && errno != ENOENT) { - goto err_out; - } - } -err_out: - v9fs_string_free(&newpath); - return ret; -} - -static int local_truncate(FsContext *ctx, V9fsPath *fs_path, off_t size) -{ - char *buffer; - int ret; - char *path = fs_path->data; - - buffer = rpath(ctx, path); - ret = truncate(buffer, size); - g_free(buffer); - return ret; -} - -static int local_rename(FsContext *ctx, const char *oldpath, - const char *newpath) -{ - int err; - char *buffer, *buffer1; - - if (ctx->export_flags & V9FS_SM_MAPPED_FILE) { - err = local_create_mapped_attr_dir(ctx, newpath); - if (err < 0) { - return err; - } - /* rename the .virtfs_metadata files */ - buffer = local_mapped_attr_path(ctx, oldpath); - buffer1 = local_mapped_attr_path(ctx, newpath); - err = rename(buffer, buffer1); - g_free(buffer); - g_free(buffer1); - if (err < 0 && errno != ENOENT) { - return err; - } - } - - buffer = rpath(ctx, oldpath); - buffer1 = rpath(ctx, newpath); - err = rename(buffer, buffer1); - g_free(buffer); - g_free(buffer1); - return err; -} - -static int local_chown(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp) -{ - char *buffer; - int ret = -1; - char *path = fs_path->data; - - if ((credp->fc_uid == -1 && credp->fc_gid == -1) || - (fs_ctx->export_flags & V9FS_SM_PASSTHROUGH) || - (fs_ctx->export_flags & V9FS_SM_NONE)) { - buffer = rpath(fs_ctx, path); - ret = lchown(buffer, credp->fc_uid, credp->fc_gid); - g_free(buffer); - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED) { - buffer = rpath(fs_ctx, path); - ret = local_set_xattr(buffer, credp); - g_free(buffer); - } else if (fs_ctx->export_flags & V9FS_SM_MAPPED_FILE) { - return local_set_mapped_file_attr(fs_ctx, path, credp); - } - return ret; -} - -static int local_utimensat(FsContext *s, V9fsPath *fs_path, - const struct timespec *buf) -{ - char *buffer; - int ret; - char *path = fs_path->data; - - buffer = rpath(s, path); - ret = qemu_utimens(buffer, buf); - g_free(buffer); - return ret; -} - -static int local_remove(FsContext *ctx, const char *path) -{ - int err; - struct stat stbuf; - char *buffer; - - if (ctx->export_flags & V9FS_SM_MAPPED_FILE) { - buffer = rpath(ctx, path); - err = lstat(buffer, &stbuf); - g_free(buffer); - if (err) { - goto err_out; - } - /* - * If directory remove .virtfs_metadata contained in the - * directory - */ - if (S_ISDIR(stbuf.st_mode)) { - buffer = g_strdup_printf("%s/%s/%s", ctx->fs_root, - path, VIRTFS_META_DIR); - err = remove(buffer); - g_free(buffer); - if (err < 0 && errno != ENOENT) { - /* - * We didn't had the .virtfs_metadata file. May be file created - * in non-mapped mode ?. Ignore ENOENT. - */ - goto err_out; - } - } - /* - * Now remove the name from parent directory - * .virtfs_metadata directory - */ - buffer = local_mapped_attr_path(ctx, path); - err = remove(buffer); - g_free(buffer); - if (err < 0 && errno != ENOENT) { - /* - * We didn't had the .virtfs_metadata file. May be file created - * in non-mapped mode ?. Ignore ENOENT. - */ - goto err_out; - } - } - - buffer = rpath(ctx, path); - err = remove(buffer); - g_free(buffer); -err_out: - return err; -} - -static int local_fsync(FsContext *ctx, int fid_type, - V9fsFidOpenState *fs, int datasync) -{ - int fd; - - if (fid_type == P9_FID_DIR) { - fd = dirfd(fs->dir); - } else { - fd = fs->fd; - } - - if (datasync) { - return qemu_fdatasync(fd); - } else { - return fsync(fd); - } -} - -static int local_statfs(FsContext *s, V9fsPath *fs_path, struct statfs *stbuf) -{ - char *buffer; - int ret; - char *path = fs_path->data; - - buffer = rpath(s, path); - ret = statfs(buffer, stbuf); - g_free(buffer); - return ret; -} - -static ssize_t local_lgetxattr(FsContext *ctx, V9fsPath *fs_path, - const char *name, void *value, size_t size) -{ - char *path = fs_path->data; - - return v9fs_get_xattr(ctx, path, name, value, size); -} - -static ssize_t local_llistxattr(FsContext *ctx, V9fsPath *fs_path, - void *value, size_t size) -{ - char *path = fs_path->data; - - return v9fs_list_xattr(ctx, path, value, size); -} - -static int local_lsetxattr(FsContext *ctx, V9fsPath *fs_path, const char *name, - void *value, size_t size, int flags) -{ - char *path = fs_path->data; - - return v9fs_set_xattr(ctx, path, name, value, size, flags); -} - -static int local_lremovexattr(FsContext *ctx, V9fsPath *fs_path, - const char *name) -{ - char *path = fs_path->data; - - return v9fs_remove_xattr(ctx, path, name); -} - -static int local_name_to_path(FsContext *ctx, V9fsPath *dir_path, - const char *name, V9fsPath *target) -{ - if (dir_path) { - v9fs_string_sprintf((V9fsString *)target, "%s/%s", - dir_path->data, name); - } else { - v9fs_string_sprintf((V9fsString *)target, "%s", name); - } - /* Bump the size for including terminating NULL */ - target->size++; - return 0; -} - -static int local_renameat(FsContext *ctx, V9fsPath *olddir, - const char *old_name, V9fsPath *newdir, - const char *new_name) -{ - int ret; - V9fsString old_full_name, new_full_name; - - v9fs_string_init(&old_full_name); - v9fs_string_init(&new_full_name); - - v9fs_string_sprintf(&old_full_name, "%s/%s", olddir->data, old_name); - v9fs_string_sprintf(&new_full_name, "%s/%s", newdir->data, new_name); - - ret = local_rename(ctx, old_full_name.data, new_full_name.data); - v9fs_string_free(&old_full_name); - v9fs_string_free(&new_full_name); - return ret; -} - -static int local_unlinkat(FsContext *ctx, V9fsPath *dir, - const char *name, int flags) -{ - int ret; - V9fsString fullname; - char *buffer; - - v9fs_string_init(&fullname); - - v9fs_string_sprintf(&fullname, "%s/%s", dir->data, name); - if (ctx->export_flags & V9FS_SM_MAPPED_FILE) { - if (flags == AT_REMOVEDIR) { - /* - * If directory remove .virtfs_metadata contained in the - * directory - */ - buffer = g_strdup_printf("%s/%s/%s", ctx->fs_root, - fullname.data, VIRTFS_META_DIR); - ret = remove(buffer); - g_free(buffer); - if (ret < 0 && errno != ENOENT) { - /* - * We didn't had the .virtfs_metadata file. May be file created - * in non-mapped mode ?. Ignore ENOENT. - */ - goto err_out; - } - } - /* - * Now remove the name from parent directory - * .virtfs_metadata directory. - */ - buffer = local_mapped_attr_path(ctx, fullname.data); - ret = remove(buffer); - g_free(buffer); - if (ret < 0 && errno != ENOENT) { - /* - * We didn't had the .virtfs_metadata file. May be file created - * in non-mapped mode ?. Ignore ENOENT. - */ - goto err_out; - } - } - /* Remove the name finally */ - buffer = rpath(ctx, fullname.data); - ret = remove(buffer); - g_free(buffer); - -err_out: - v9fs_string_free(&fullname); - return ret; -} - -static int local_ioc_getversion(FsContext *ctx, V9fsPath *path, - mode_t st_mode, uint64_t *st_gen) -{ -#ifdef FS_IOC_GETVERSION - int err; - V9fsFidOpenState fid_open; - - /* - * Do not try to open special files like device nodes, fifos etc - * We can get fd for regular files and directories only - */ - if (!S_ISREG(st_mode) && !S_ISDIR(st_mode)) { - errno = ENOTTY; - return -1; - } - err = local_open(ctx, path, O_RDONLY, &fid_open); - if (err < 0) { - return err; - } - err = ioctl(fid_open.fd, FS_IOC_GETVERSION, st_gen); - local_close(ctx, &fid_open); - return err; -#else - errno = ENOTTY; - return -1; -#endif -} - -static int local_init(FsContext *ctx) -{ - int err = 0; - struct statfs stbuf; - - if (ctx->export_flags & V9FS_SM_PASSTHROUGH) { - ctx->xops = passthrough_xattr_ops; - } else if (ctx->export_flags & V9FS_SM_MAPPED) { - ctx->xops = mapped_xattr_ops; - } else if (ctx->export_flags & V9FS_SM_NONE) { - ctx->xops = none_xattr_ops; - } else if (ctx->export_flags & V9FS_SM_MAPPED_FILE) { - /* - * xattr operation for mapped-file and passthrough - * remain same. - */ - ctx->xops = passthrough_xattr_ops; - } - ctx->export_flags |= V9FS_PATHNAME_FSCONTEXT; -#ifdef FS_IOC_GETVERSION - /* - * use ioc_getversion only if the iocl is definied - */ - err = statfs(ctx->fs_root, &stbuf); - if (!err) { - switch (stbuf.f_type) { - case EXT2_SUPER_MAGIC: - case BTRFS_SUPER_MAGIC: - case REISERFS_SUPER_MAGIC: - case XFS_SUPER_MAGIC: - ctx->exops.get_st_gen = local_ioc_getversion; - break; - } - } -#endif - return err; -} - -static int local_parse_opts(QemuOpts *opts, struct FsDriverEntry *fse) -{ - const char *sec_model = qemu_opt_get(opts, "security_model"); - const char *path = qemu_opt_get(opts, "path"); - - if (!sec_model) { - error_report("Security model not specified, local fs needs security model"); - error_printf("valid options are:" - "\tsecurity_model=[passthrough|mapped-xattr|mapped-file|none]\n"); - return -1; - } - - if (!strcmp(sec_model, "passthrough")) { - fse->export_flags |= V9FS_SM_PASSTHROUGH; - } else if (!strcmp(sec_model, "mapped") || - !strcmp(sec_model, "mapped-xattr")) { - fse->export_flags |= V9FS_SM_MAPPED; - } else if (!strcmp(sec_model, "none")) { - fse->export_flags |= V9FS_SM_NONE; - } else if (!strcmp(sec_model, "mapped-file")) { - fse->export_flags |= V9FS_SM_MAPPED_FILE; - } else { - error_report("Invalid security model %s specified", sec_model); - error_printf("valid options are:" - "\t[passthrough|mapped-xattr|mapped-file|none]\n"); - return -1; - } - - if (!path) { - error_report("fsdev: No path specified"); - return -1; - } - fse->path = g_strdup(path); - - return 0; -} - -FileOperations local_ops = { - .parse_opts = local_parse_opts, - .init = local_init, - .lstat = local_lstat, - .readlink = local_readlink, - .close = local_close, - .closedir = local_closedir, - .open = local_open, - .opendir = local_opendir, - .rewinddir = local_rewinddir, - .telldir = local_telldir, - .readdir_r = local_readdir_r, - .seekdir = local_seekdir, - .preadv = local_preadv, - .pwritev = local_pwritev, - .chmod = local_chmod, - .mknod = local_mknod, - .mkdir = local_mkdir, - .fstat = local_fstat, - .open2 = local_open2, - .symlink = local_symlink, - .link = local_link, - .truncate = local_truncate, - .rename = local_rename, - .chown = local_chown, - .utimensat = local_utimensat, - .remove = local_remove, - .fsync = local_fsync, - .statfs = local_statfs, - .lgetxattr = local_lgetxattr, - .llistxattr = local_llistxattr, - .lsetxattr = local_lsetxattr, - .lremovexattr = local_lremovexattr, - .name_to_path = local_name_to_path, - .renameat = local_renameat, - .unlinkat = local_unlinkat, -}; diff --git a/qemu/hw/9pfs/9p-posix-acl.c b/qemu/hw/9pfs/9p-posix-acl.c deleted file mode 100644 index ec003181c..000000000 --- a/qemu/hw/9pfs/9p-posix-acl.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * 9p system.posix* xattr callback - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "qemu/xattr.h" -#include "9p.h" -#include "fsdev/file-op-9p.h" -#include "9p-xattr.h" - -#define MAP_ACL_ACCESS "user.virtfs.system.posix_acl_access" -#define MAP_ACL_DEFAULT "user.virtfs.system.posix_acl_default" -#define ACL_ACCESS "system.posix_acl_access" -#define ACL_DEFAULT "system.posix_acl_default" - -static ssize_t mp_pacl_getxattr(FsContext *ctx, const char *path, - const char *name, void *value, size_t size) -{ - char *buffer; - ssize_t ret; - - buffer = rpath(ctx, path); - ret = lgetxattr(buffer, MAP_ACL_ACCESS, value, size); - g_free(buffer); - return ret; -} - -static ssize_t mp_pacl_listxattr(FsContext *ctx, const char *path, - char *name, void *value, size_t osize) -{ - ssize_t len = sizeof(ACL_ACCESS); - - if (!value) { - return len; - } - - if (osize < len) { - errno = ERANGE; - return -1; - } - - /* len includes the trailing NUL */ - memcpy(value, ACL_ACCESS, len); - return 0; -} - -static int mp_pacl_setxattr(FsContext *ctx, const char *path, const char *name, - void *value, size_t size, int flags) -{ - char *buffer; - int ret; - - buffer = rpath(ctx, path); - ret = lsetxattr(buffer, MAP_ACL_ACCESS, value, size, flags); - g_free(buffer); - return ret; -} - -static int mp_pacl_removexattr(FsContext *ctx, - const char *path, const char *name) -{ - int ret; - char *buffer; - - buffer = rpath(ctx, path); - ret = lremovexattr(buffer, MAP_ACL_ACCESS); - if (ret == -1 && errno == ENODATA) { - /* - * We don't get ENODATA error when trying to remove a - * posix acl that is not present. So don't throw the error - * even in case of mapped security model - */ - errno = 0; - ret = 0; - } - g_free(buffer); - return ret; -} - -static ssize_t mp_dacl_getxattr(FsContext *ctx, const char *path, - const char *name, void *value, size_t size) -{ - char *buffer; - ssize_t ret; - - buffer = rpath(ctx, path); - ret = lgetxattr(buffer, MAP_ACL_DEFAULT, value, size); - g_free(buffer); - return ret; -} - -static ssize_t mp_dacl_listxattr(FsContext *ctx, const char *path, - char *name, void *value, size_t osize) -{ - ssize_t len = sizeof(ACL_DEFAULT); - - if (!value) { - return len; - } - - if (osize < len) { - errno = ERANGE; - return -1; - } - - /* len includes the trailing NUL */ - memcpy(value, ACL_DEFAULT, len); - return 0; -} - -static int mp_dacl_setxattr(FsContext *ctx, const char *path, const char *name, - void *value, size_t size, int flags) -{ - char *buffer; - int ret; - - buffer = rpath(ctx, path); - ret = lsetxattr(buffer, MAP_ACL_DEFAULT, value, size, flags); - g_free(buffer); - return ret; -} - -static int mp_dacl_removexattr(FsContext *ctx, - const char *path, const char *name) -{ - int ret; - char *buffer; - - buffer = rpath(ctx, path); - ret = lremovexattr(buffer, MAP_ACL_DEFAULT); - if (ret == -1 && errno == ENODATA) { - /* - * We don't get ENODATA error when trying to remove a - * posix acl that is not present. So don't throw the error - * even in case of mapped security model - */ - errno = 0; - ret = 0; - } - g_free(buffer); - return ret; -} - - -XattrOperations mapped_pacl_xattr = { - .name = "system.posix_acl_access", - .getxattr = mp_pacl_getxattr, - .setxattr = mp_pacl_setxattr, - .listxattr = mp_pacl_listxattr, - .removexattr = mp_pacl_removexattr, -}; - -XattrOperations mapped_dacl_xattr = { - .name = "system.posix_acl_default", - .getxattr = mp_dacl_getxattr, - .setxattr = mp_dacl_setxattr, - .listxattr = mp_dacl_listxattr, - .removexattr = mp_dacl_removexattr, -}; - -XattrOperations passthrough_acl_xattr = { - .name = "system.posix_acl_", - .getxattr = pt_getxattr, - .setxattr = pt_setxattr, - .listxattr = pt_listxattr, - .removexattr = pt_removexattr, -}; - -XattrOperations none_acl_xattr = { - .name = "system.posix_acl_", - .getxattr = notsup_getxattr, - .setxattr = notsup_setxattr, - .listxattr = notsup_listxattr, - .removexattr = notsup_removexattr, -}; diff --git a/qemu/hw/9pfs/9p-proxy.c b/qemu/hw/9pfs/9p-proxy.c deleted file mode 100644 index 00a4eb2a7..000000000 --- a/qemu/hw/9pfs/9p-proxy.c +++ /dev/null @@ -1,1220 +0,0 @@ -/* - * 9p Proxy callback - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * M. Mohan Kumar - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - */ -#include "qemu/osdep.h" -#include -#include -#include "9p.h" -#include "qemu/cutils.h" -#include "qemu/error-report.h" -#include "fsdev/qemu-fsdev.h" -#include "9p-proxy.h" - -typedef struct V9fsProxy { - int sockfd; - QemuMutex mutex; - struct iovec in_iovec; - struct iovec out_iovec; -} V9fsProxy; - -/* - * Return received file descriptor on success in *status. - * errno is also returned on *status (which will be < 0) - * return < 0 on transport error. - */ -static int v9fs_receivefd(int sockfd, int *status) -{ - struct iovec iov; - struct msghdr msg; - struct cmsghdr *cmsg; - int retval, data, fd; - union MsgControl msg_control; - - iov.iov_base = &data; - iov.iov_len = sizeof(data); - - memset(&msg, 0, sizeof(msg)); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = &msg_control; - msg.msg_controllen = sizeof(msg_control); - - do { - retval = recvmsg(sockfd, &msg, 0); - } while (retval < 0 && errno == EINTR); - if (retval <= 0) { - return retval; - } - /* - * data is set to V9FS_FD_VALID, if ancillary data is sent. If this - * request doesn't need ancillary data (fd) or an error occurred, - * data is set to negative errno value. - */ - if (data != V9FS_FD_VALID) { - *status = data; - return 0; - } - /* - * File descriptor (fd) is sent in the ancillary data. Check if we - * indeed received it. One of the reasons to fail to receive it is if - * we exceeded the maximum number of file descriptors! - */ - for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) { - if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) || - cmsg->cmsg_level != SOL_SOCKET || - cmsg->cmsg_type != SCM_RIGHTS) { - continue; - } - fd = *((int *)CMSG_DATA(cmsg)); - *status = fd; - return 0; - } - *status = -ENFILE; /* Ancillary data sent but not received */ - return 0; -} - -static ssize_t socket_read(int sockfd, void *buff, size_t size) -{ - ssize_t retval, total = 0; - - while (size) { - retval = read(sockfd, buff, size); - if (retval == 0) { - return -EIO; - } - if (retval < 0) { - if (errno == EINTR) { - continue; - } - return -errno; - } - size -= retval; - buff += retval; - total += retval; - } - return total; -} - -/* Converts proxy_statfs to VFS statfs structure */ -static void prstatfs_to_statfs(struct statfs *stfs, ProxyStatFS *prstfs) -{ - memset(stfs, 0, sizeof(*stfs)); - stfs->f_type = prstfs->f_type; - stfs->f_bsize = prstfs->f_bsize; - stfs->f_blocks = prstfs->f_blocks; - stfs->f_bfree = prstfs->f_bfree; - stfs->f_bavail = prstfs->f_bavail; - stfs->f_files = prstfs->f_files; - stfs->f_ffree = prstfs->f_ffree; - stfs->f_fsid.__val[0] = prstfs->f_fsid[0] & 0xFFFFFFFFU; - stfs->f_fsid.__val[1] = prstfs->f_fsid[1] >> 32 & 0xFFFFFFFFU; - stfs->f_namelen = prstfs->f_namelen; - stfs->f_frsize = prstfs->f_frsize; -} - -/* Converts proxy_stat structure to VFS stat structure */ -static void prstat_to_stat(struct stat *stbuf, ProxyStat *prstat) -{ - memset(stbuf, 0, sizeof(*stbuf)); - stbuf->st_dev = prstat->st_dev; - stbuf->st_ino = prstat->st_ino; - stbuf->st_nlink = prstat->st_nlink; - stbuf->st_mode = prstat->st_mode; - stbuf->st_uid = prstat->st_uid; - stbuf->st_gid = prstat->st_gid; - stbuf->st_rdev = prstat->st_rdev; - stbuf->st_size = prstat->st_size; - stbuf->st_blksize = prstat->st_blksize; - stbuf->st_blocks = prstat->st_blocks; - stbuf->st_atim.tv_sec = prstat->st_atim_sec; - stbuf->st_atim.tv_nsec = prstat->st_atim_nsec; - stbuf->st_mtime = prstat->st_mtim_sec; - stbuf->st_mtim.tv_nsec = prstat->st_mtim_nsec; - stbuf->st_ctime = prstat->st_ctim_sec; - stbuf->st_ctim.tv_nsec = prstat->st_ctim_nsec; -} - -/* - * Response contains two parts - * {header, data} - * header.type == T_ERROR, data -> -errno - * header.type == T_SUCCESS, data -> response - * size of errno/response is given by header.size - * returns < 0, on transport error. response is - * valid only if status >= 0. - */ -static int v9fs_receive_response(V9fsProxy *proxy, int type, - int *status, void *response) -{ - int retval; - ProxyHeader header; - struct iovec *reply = &proxy->in_iovec; - - *status = 0; - reply->iov_len = 0; - retval = socket_read(proxy->sockfd, reply->iov_base, PROXY_HDR_SZ); - if (retval < 0) { - return retval; - } - reply->iov_len = PROXY_HDR_SZ; - proxy_unmarshal(reply, 0, "dd", &header.type, &header.size); - /* - * if response size > PROXY_MAX_IO_SZ, read the response but ignore it and - * return -ENOBUFS - */ - if (header.size > PROXY_MAX_IO_SZ) { - int count; - while (header.size > 0) { - count = MIN(PROXY_MAX_IO_SZ, header.size); - count = socket_read(proxy->sockfd, reply->iov_base, count); - if (count < 0) { - return count; - } - header.size -= count; - } - *status = -ENOBUFS; - return 0; - } - - retval = socket_read(proxy->sockfd, - reply->iov_base + PROXY_HDR_SZ, header.size); - if (retval < 0) { - return retval; - } - reply->iov_len += header.size; - /* there was an error during processing request */ - if (header.type == T_ERROR) { - int ret; - ret = proxy_unmarshal(reply, PROXY_HDR_SZ, "d", status); - if (ret < 0) { - *status = ret; - } - return 0; - } - - switch (type) { - case T_LSTAT: { - ProxyStat prstat; - retval = proxy_unmarshal(reply, PROXY_HDR_SZ, - "qqqdddqqqqqqqqqq", &prstat.st_dev, - &prstat.st_ino, &prstat.st_nlink, - &prstat.st_mode, &prstat.st_uid, - &prstat.st_gid, &prstat.st_rdev, - &prstat.st_size, &prstat.st_blksize, - &prstat.st_blocks, - &prstat.st_atim_sec, &prstat.st_atim_nsec, - &prstat.st_mtim_sec, &prstat.st_mtim_nsec, - &prstat.st_ctim_sec, &prstat.st_ctim_nsec); - prstat_to_stat(response, &prstat); - break; - } - case T_STATFS: { - ProxyStatFS prstfs; - retval = proxy_unmarshal(reply, PROXY_HDR_SZ, - "qqqqqqqqqqq", &prstfs.f_type, - &prstfs.f_bsize, &prstfs.f_blocks, - &prstfs.f_bfree, &prstfs.f_bavail, - &prstfs.f_files, &prstfs.f_ffree, - &prstfs.f_fsid[0], &prstfs.f_fsid[1], - &prstfs.f_namelen, &prstfs.f_frsize); - prstatfs_to_statfs(response, &prstfs); - break; - } - case T_READLINK: { - V9fsString target; - v9fs_string_init(&target); - retval = proxy_unmarshal(reply, PROXY_HDR_SZ, "s", &target); - strcpy(response, target.data); - v9fs_string_free(&target); - break; - } - case T_LGETXATTR: - case T_LLISTXATTR: { - V9fsString xattr; - v9fs_string_init(&xattr); - retval = proxy_unmarshal(reply, PROXY_HDR_SZ, "s", &xattr); - memcpy(response, xattr.data, xattr.size); - v9fs_string_free(&xattr); - break; - } - case T_GETVERSION: - proxy_unmarshal(reply, PROXY_HDR_SZ, "q", response); - break; - default: - return -1; - } - if (retval < 0) { - *status = retval; - } - return 0; -} - -/* - * return < 0 on transport error. - * *status is valid only if return >= 0 - */ -static int v9fs_receive_status(V9fsProxy *proxy, - struct iovec *reply, int *status) -{ - int retval; - ProxyHeader header; - - *status = 0; - reply->iov_len = 0; - retval = socket_read(proxy->sockfd, reply->iov_base, PROXY_HDR_SZ); - if (retval < 0) { - return retval; - } - reply->iov_len = PROXY_HDR_SZ; - proxy_unmarshal(reply, 0, "dd", &header.type, &header.size); - if (header.size != sizeof(int)) { - *status = -ENOBUFS; - return 0; - } - retval = socket_read(proxy->sockfd, - reply->iov_base + PROXY_HDR_SZ, header.size); - if (retval < 0) { - return retval; - } - reply->iov_len += header.size; - proxy_unmarshal(reply, PROXY_HDR_SZ, "d", status); - return 0; -} - -/* - * Proxy->header and proxy->request written to socket by QEMU process. - * This request read by proxy helper process - * returns 0 on success and -errno on error - */ -static int v9fs_request(V9fsProxy *proxy, int type, - void *response, const char *fmt, ...) -{ - dev_t rdev; - va_list ap; - int size = 0; - int retval = 0; - uint64_t offset; - ProxyHeader header = { 0, 0}; - struct timespec spec[2]; - int flags, mode, uid, gid; - V9fsString *name, *value; - V9fsString *path, *oldpath; - struct iovec *iovec = NULL, *reply = NULL; - - qemu_mutex_lock(&proxy->mutex); - - if (proxy->sockfd == -1) { - retval = -EIO; - goto err_out; - } - iovec = &proxy->out_iovec; - reply = &proxy->in_iovec; - va_start(ap, fmt); - switch (type) { - case T_OPEN: - path = va_arg(ap, V9fsString *); - flags = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "sd", path, flags); - if (retval > 0) { - header.size = retval; - header.type = T_OPEN; - } - break; - case T_CREATE: - path = va_arg(ap, V9fsString *); - flags = va_arg(ap, int); - mode = va_arg(ap, int); - uid = va_arg(ap, int); - gid = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "sdddd", path, - flags, mode, uid, gid); - if (retval > 0) { - header.size = retval; - header.type = T_CREATE; - } - break; - case T_MKNOD: - path = va_arg(ap, V9fsString *); - mode = va_arg(ap, int); - rdev = va_arg(ap, long int); - uid = va_arg(ap, int); - gid = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "ddsdq", - uid, gid, path, mode, rdev); - if (retval > 0) { - header.size = retval; - header.type = T_MKNOD; - } - break; - case T_MKDIR: - path = va_arg(ap, V9fsString *); - mode = va_arg(ap, int); - uid = va_arg(ap, int); - gid = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "ddsd", - uid, gid, path, mode); - if (retval > 0) { - header.size = retval; - header.type = T_MKDIR; - } - break; - case T_SYMLINK: - oldpath = va_arg(ap, V9fsString *); - path = va_arg(ap, V9fsString *); - uid = va_arg(ap, int); - gid = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "ddss", - uid, gid, oldpath, path); - if (retval > 0) { - header.size = retval; - header.type = T_SYMLINK; - } - break; - case T_LINK: - oldpath = va_arg(ap, V9fsString *); - path = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "ss", - oldpath, path); - if (retval > 0) { - header.size = retval; - header.type = T_LINK; - } - break; - case T_LSTAT: - path = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "s", path); - if (retval > 0) { - header.size = retval; - header.type = T_LSTAT; - } - break; - case T_READLINK: - path = va_arg(ap, V9fsString *); - size = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "sd", path, size); - if (retval > 0) { - header.size = retval; - header.type = T_READLINK; - } - break; - case T_STATFS: - path = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "s", path); - if (retval > 0) { - header.size = retval; - header.type = T_STATFS; - } - break; - case T_CHMOD: - path = va_arg(ap, V9fsString *); - mode = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "sd", path, mode); - if (retval > 0) { - header.size = retval; - header.type = T_CHMOD; - } - break; - case T_CHOWN: - path = va_arg(ap, V9fsString *); - uid = va_arg(ap, int); - gid = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "sdd", path, uid, gid); - if (retval > 0) { - header.size = retval; - header.type = T_CHOWN; - } - break; - case T_TRUNCATE: - path = va_arg(ap, V9fsString *); - offset = va_arg(ap, uint64_t); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "sq", path, offset); - if (retval > 0) { - header.size = retval; - header.type = T_TRUNCATE; - } - break; - case T_UTIME: - path = va_arg(ap, V9fsString *); - spec[0].tv_sec = va_arg(ap, long); - spec[0].tv_nsec = va_arg(ap, long); - spec[1].tv_sec = va_arg(ap, long); - spec[1].tv_nsec = va_arg(ap, long); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "sqqqq", path, - spec[0].tv_sec, spec[1].tv_nsec, - spec[1].tv_sec, spec[1].tv_nsec); - if (retval > 0) { - header.size = retval; - header.type = T_UTIME; - } - break; - case T_RENAME: - oldpath = va_arg(ap, V9fsString *); - path = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "ss", oldpath, path); - if (retval > 0) { - header.size = retval; - header.type = T_RENAME; - } - break; - case T_REMOVE: - path = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "s", path); - if (retval > 0) { - header.size = retval; - header.type = T_REMOVE; - } - break; - case T_LGETXATTR: - size = va_arg(ap, int); - path = va_arg(ap, V9fsString *); - name = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, - "dss", size, path, name); - if (retval > 0) { - header.size = retval; - header.type = T_LGETXATTR; - } - break; - case T_LLISTXATTR: - size = va_arg(ap, int); - path = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "ds", size, path); - if (retval > 0) { - header.size = retval; - header.type = T_LLISTXATTR; - } - break; - case T_LSETXATTR: - path = va_arg(ap, V9fsString *); - name = va_arg(ap, V9fsString *); - value = va_arg(ap, V9fsString *); - size = va_arg(ap, int); - flags = va_arg(ap, int); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "sssdd", - path, name, value, size, flags); - if (retval > 0) { - header.size = retval; - header.type = T_LSETXATTR; - } - break; - case T_LREMOVEXATTR: - path = va_arg(ap, V9fsString *); - name = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "ss", path, name); - if (retval > 0) { - header.size = retval; - header.type = T_LREMOVEXATTR; - } - break; - case T_GETVERSION: - path = va_arg(ap, V9fsString *); - retval = proxy_marshal(iovec, PROXY_HDR_SZ, "s", path); - if (retval > 0) { - header.size = retval; - header.type = T_GETVERSION; - } - break; - default: - error_report("Invalid type %d", type); - retval = -EINVAL; - break; - } - va_end(ap); - - if (retval < 0) { - goto err_out; - } - - /* marshal the header details */ - proxy_marshal(iovec, 0, "dd", header.type, header.size); - header.size += PROXY_HDR_SZ; - - retval = qemu_write_full(proxy->sockfd, iovec->iov_base, header.size); - if (retval != header.size) { - goto close_error; - } - - switch (type) { - case T_OPEN: - case T_CREATE: - /* - * A file descriptor is returned as response for - * T_OPEN,T_CREATE on success - */ - if (v9fs_receivefd(proxy->sockfd, &retval) < 0) { - goto close_error; - } - break; - case T_MKNOD: - case T_MKDIR: - case T_SYMLINK: - case T_LINK: - case T_CHMOD: - case T_CHOWN: - case T_RENAME: - case T_TRUNCATE: - case T_UTIME: - case T_REMOVE: - case T_LSETXATTR: - case T_LREMOVEXATTR: - if (v9fs_receive_status(proxy, reply, &retval) < 0) { - goto close_error; - } - break; - case T_LSTAT: - case T_READLINK: - case T_STATFS: - case T_GETVERSION: - if (v9fs_receive_response(proxy, type, &retval, response) < 0) { - goto close_error; - } - break; - case T_LGETXATTR: - case T_LLISTXATTR: - if (!size) { - if (v9fs_receive_status(proxy, reply, &retval) < 0) { - goto close_error; - } - } else { - if (v9fs_receive_response(proxy, type, &retval, response) < 0) { - goto close_error; - } - } - break; - } - -err_out: - qemu_mutex_unlock(&proxy->mutex); - return retval; - -close_error: - close(proxy->sockfd); - proxy->sockfd = -1; - qemu_mutex_unlock(&proxy->mutex); - return -EIO; -} - -static int proxy_lstat(FsContext *fs_ctx, V9fsPath *fs_path, struct stat *stbuf) -{ - int retval; - retval = v9fs_request(fs_ctx->private, T_LSTAT, stbuf, "s", fs_path); - if (retval < 0) { - errno = -retval; - return -1; - } - return retval; -} - -static ssize_t proxy_readlink(FsContext *fs_ctx, V9fsPath *fs_path, - char *buf, size_t bufsz) -{ - int retval; - retval = v9fs_request(fs_ctx->private, T_READLINK, buf, "sd", - fs_path, bufsz); - if (retval < 0) { - errno = -retval; - return -1; - } - return strlen(buf); -} - -static int proxy_close(FsContext *ctx, V9fsFidOpenState *fs) -{ - return close(fs->fd); -} - -static int proxy_closedir(FsContext *ctx, V9fsFidOpenState *fs) -{ - return closedir(fs->dir); -} - -static int proxy_open(FsContext *ctx, V9fsPath *fs_path, - int flags, V9fsFidOpenState *fs) -{ - fs->fd = v9fs_request(ctx->private, T_OPEN, NULL, "sd", fs_path, flags); - if (fs->fd < 0) { - errno = -fs->fd; - fs->fd = -1; - } - return fs->fd; -} - -static int proxy_opendir(FsContext *ctx, - V9fsPath *fs_path, V9fsFidOpenState *fs) -{ - int serrno, fd; - - fs->dir = NULL; - fd = v9fs_request(ctx->private, T_OPEN, NULL, "sd", fs_path, O_DIRECTORY); - if (fd < 0) { - errno = -fd; - return -1; - } - fs->dir = fdopendir(fd); - if (!fs->dir) { - serrno = errno; - close(fd); - errno = serrno; - return -1; - } - return 0; -} - -static void proxy_rewinddir(FsContext *ctx, V9fsFidOpenState *fs) -{ - rewinddir(fs->dir); -} - -static off_t proxy_telldir(FsContext *ctx, V9fsFidOpenState *fs) -{ - return telldir(fs->dir); -} - -static int proxy_readdir_r(FsContext *ctx, V9fsFidOpenState *fs, - struct dirent *entry, - struct dirent **result) -{ - return readdir_r(fs->dir, entry, result); -} - -static void proxy_seekdir(FsContext *ctx, V9fsFidOpenState *fs, off_t off) -{ - seekdir(fs->dir, off); -} - -static ssize_t proxy_preadv(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ - ssize_t ret; -#ifdef CONFIG_PREADV - ret = preadv(fs->fd, iov, iovcnt, offset); -#else - ret = lseek(fs->fd, offset, SEEK_SET); - if (ret >= 0) { - ret = readv(fs->fd, iov, iovcnt); - } -#endif - return ret; -} - -static ssize_t proxy_pwritev(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ - ssize_t ret; - -#ifdef CONFIG_PREADV - ret = pwritev(fs->fd, iov, iovcnt, offset); -#else - ret = lseek(fs->fd, offset, SEEK_SET); - if (ret >= 0) { - ret = writev(fs->fd, iov, iovcnt); - } -#endif -#ifdef CONFIG_SYNC_FILE_RANGE - if (ret > 0 && ctx->export_flags & V9FS_IMMEDIATE_WRITEOUT) { - /* - * Initiate a writeback. This is not a data integrity sync. - * We want to ensure that we don't leave dirty pages in the cache - * after write when writeout=immediate is sepcified. - */ - sync_file_range(fs->fd, offset, ret, - SYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE); - } -#endif - return ret; -} - -static int proxy_chmod(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp) -{ - int retval; - retval = v9fs_request(fs_ctx->private, T_CHMOD, NULL, "sd", - fs_path, credp->fc_mode); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static int proxy_mknod(FsContext *fs_ctx, V9fsPath *dir_path, - const char *name, FsCred *credp) -{ - int retval; - V9fsString fullname; - - v9fs_string_init(&fullname); - v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name); - - retval = v9fs_request(fs_ctx->private, T_MKNOD, NULL, "sdqdd", - &fullname, credp->fc_mode, credp->fc_rdev, - credp->fc_uid, credp->fc_gid); - v9fs_string_free(&fullname); - if (retval < 0) { - errno = -retval; - retval = -1; - } - return retval; -} - -static int proxy_mkdir(FsContext *fs_ctx, V9fsPath *dir_path, - const char *name, FsCred *credp) -{ - int retval; - V9fsString fullname; - - v9fs_string_init(&fullname); - v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name); - - retval = v9fs_request(fs_ctx->private, T_MKDIR, NULL, "sddd", &fullname, - credp->fc_mode, credp->fc_uid, credp->fc_gid); - v9fs_string_free(&fullname); - if (retval < 0) { - errno = -retval; - retval = -1; - } - v9fs_string_free(&fullname); - return retval; -} - -static int proxy_fstat(FsContext *fs_ctx, int fid_type, - V9fsFidOpenState *fs, struct stat *stbuf) -{ - int fd; - - if (fid_type == P9_FID_DIR) { - fd = dirfd(fs->dir); - } else { - fd = fs->fd; - } - return fstat(fd, stbuf); -} - -static int proxy_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name, - int flags, FsCred *credp, V9fsFidOpenState *fs) -{ - V9fsString fullname; - - v9fs_string_init(&fullname); - v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name); - - fs->fd = v9fs_request(fs_ctx->private, T_CREATE, NULL, "sdddd", - &fullname, flags, credp->fc_mode, - credp->fc_uid, credp->fc_gid); - v9fs_string_free(&fullname); - if (fs->fd < 0) { - errno = -fs->fd; - fs->fd = -1; - } - return fs->fd; -} - -static int proxy_symlink(FsContext *fs_ctx, const char *oldpath, - V9fsPath *dir_path, const char *name, FsCred *credp) -{ - int retval; - V9fsString fullname, target; - - v9fs_string_init(&fullname); - v9fs_string_init(&target); - - v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name); - v9fs_string_sprintf(&target, "%s", oldpath); - - retval = v9fs_request(fs_ctx->private, T_SYMLINK, NULL, "ssdd", - &target, &fullname, credp->fc_uid, credp->fc_gid); - v9fs_string_free(&fullname); - v9fs_string_free(&target); - if (retval < 0) { - errno = -retval; - retval = -1; - } - return retval; -} - -static int proxy_link(FsContext *ctx, V9fsPath *oldpath, - V9fsPath *dirpath, const char *name) -{ - int retval; - V9fsString newpath; - - v9fs_string_init(&newpath); - v9fs_string_sprintf(&newpath, "%s/%s", dirpath->data, name); - - retval = v9fs_request(ctx->private, T_LINK, NULL, "ss", oldpath, &newpath); - v9fs_string_free(&newpath); - if (retval < 0) { - errno = -retval; - retval = -1; - } - return retval; -} - -static int proxy_truncate(FsContext *ctx, V9fsPath *fs_path, off_t size) -{ - int retval; - - retval = v9fs_request(ctx->private, T_TRUNCATE, NULL, "sq", fs_path, size); - if (retval < 0) { - errno = -retval; - return -1; - } - return 0; -} - -static int proxy_rename(FsContext *ctx, const char *oldpath, - const char *newpath) -{ - int retval; - V9fsString oldname, newname; - - v9fs_string_init(&oldname); - v9fs_string_init(&newname); - - v9fs_string_sprintf(&oldname, "%s", oldpath); - v9fs_string_sprintf(&newname, "%s", newpath); - retval = v9fs_request(ctx->private, T_RENAME, NULL, "ss", - &oldname, &newname); - v9fs_string_free(&oldname); - v9fs_string_free(&newname); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static int proxy_chown(FsContext *fs_ctx, V9fsPath *fs_path, FsCred *credp) -{ - int retval; - retval = v9fs_request(fs_ctx->private, T_CHOWN, NULL, "sdd", - fs_path, credp->fc_uid, credp->fc_gid); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static int proxy_utimensat(FsContext *s, V9fsPath *fs_path, - const struct timespec *buf) -{ - int retval; - retval = v9fs_request(s->private, T_UTIME, NULL, "sqqqq", - fs_path, - buf[0].tv_sec, buf[0].tv_nsec, - buf[1].tv_sec, buf[1].tv_nsec); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static int proxy_remove(FsContext *ctx, const char *path) -{ - int retval; - V9fsString name; - v9fs_string_init(&name); - v9fs_string_sprintf(&name, "%s", path); - retval = v9fs_request(ctx->private, T_REMOVE, NULL, "s", &name); - v9fs_string_free(&name); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static int proxy_fsync(FsContext *ctx, int fid_type, - V9fsFidOpenState *fs, int datasync) -{ - int fd; - - if (fid_type == P9_FID_DIR) { - fd = dirfd(fs->dir); - } else { - fd = fs->fd; - } - - if (datasync) { - return qemu_fdatasync(fd); - } else { - return fsync(fd); - } -} - -static int proxy_statfs(FsContext *s, V9fsPath *fs_path, struct statfs *stbuf) -{ - int retval; - retval = v9fs_request(s->private, T_STATFS, stbuf, "s", fs_path); - if (retval < 0) { - errno = -retval; - return -1; - } - return retval; -} - -static ssize_t proxy_lgetxattr(FsContext *ctx, V9fsPath *fs_path, - const char *name, void *value, size_t size) -{ - int retval; - V9fsString xname; - - v9fs_string_init(&xname); - v9fs_string_sprintf(&xname, "%s", name); - retval = v9fs_request(ctx->private, T_LGETXATTR, value, "dss", size, - fs_path, &xname); - v9fs_string_free(&xname); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static ssize_t proxy_llistxattr(FsContext *ctx, V9fsPath *fs_path, - void *value, size_t size) -{ - int retval; - retval = v9fs_request(ctx->private, T_LLISTXATTR, value, "ds", size, - fs_path); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static int proxy_lsetxattr(FsContext *ctx, V9fsPath *fs_path, const char *name, - void *value, size_t size, int flags) -{ - int retval; - V9fsString xname, xvalue; - - v9fs_string_init(&xname); - v9fs_string_sprintf(&xname, "%s", name); - - v9fs_string_init(&xvalue); - xvalue.size = size; - xvalue.data = g_malloc(size); - memcpy(xvalue.data, value, size); - - retval = v9fs_request(ctx->private, T_LSETXATTR, value, "sssdd", - fs_path, &xname, &xvalue, size, flags); - v9fs_string_free(&xname); - v9fs_string_free(&xvalue); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static int proxy_lremovexattr(FsContext *ctx, V9fsPath *fs_path, - const char *name) -{ - int retval; - V9fsString xname; - - v9fs_string_init(&xname); - v9fs_string_sprintf(&xname, "%s", name); - retval = v9fs_request(ctx->private, T_LREMOVEXATTR, NULL, "ss", - fs_path, &xname); - v9fs_string_free(&xname); - if (retval < 0) { - errno = -retval; - } - return retval; -} - -static int proxy_name_to_path(FsContext *ctx, V9fsPath *dir_path, - const char *name, V9fsPath *target) -{ - if (dir_path) { - v9fs_string_sprintf((V9fsString *)target, "%s/%s", - dir_path->data, name); - } else { - v9fs_string_sprintf((V9fsString *)target, "%s", name); - } - /* Bump the size for including terminating NULL */ - target->size++; - return 0; -} - -static int proxy_renameat(FsContext *ctx, V9fsPath *olddir, - const char *old_name, V9fsPath *newdir, - const char *new_name) -{ - int ret; - V9fsString old_full_name, new_full_name; - - v9fs_string_init(&old_full_name); - v9fs_string_init(&new_full_name); - - v9fs_string_sprintf(&old_full_name, "%s/%s", olddir->data, old_name); - v9fs_string_sprintf(&new_full_name, "%s/%s", newdir->data, new_name); - - ret = proxy_rename(ctx, old_full_name.data, new_full_name.data); - v9fs_string_free(&old_full_name); - v9fs_string_free(&new_full_name); - return ret; -} - -static int proxy_unlinkat(FsContext *ctx, V9fsPath *dir, - const char *name, int flags) -{ - int ret; - V9fsString fullname; - v9fs_string_init(&fullname); - - v9fs_string_sprintf(&fullname, "%s/%s", dir->data, name); - ret = proxy_remove(ctx, fullname.data); - v9fs_string_free(&fullname); - - return ret; -} - -static int proxy_ioc_getversion(FsContext *fs_ctx, V9fsPath *path, - mode_t st_mode, uint64_t *st_gen) -{ - int err; - - /* Do not try to open special files like device nodes, fifos etc - * we can get fd for regular files and directories only - */ - if (!S_ISREG(st_mode) && !S_ISDIR(st_mode)) { - errno = ENOTTY; - return -1; - } - err = v9fs_request(fs_ctx->private, T_GETVERSION, st_gen, "s", path); - if (err < 0) { - errno = -err; - err = -1; - } - return err; -} - -static int connect_namedsocket(const char *path) -{ - int sockfd, size; - struct sockaddr_un helper; - - if (strlen(path) >= sizeof(helper.sun_path)) { - error_report("Socket name too long"); - return -1; - } - sockfd = socket(AF_UNIX, SOCK_STREAM, 0); - if (sockfd < 0) { - error_report("Failed to create socket: %s", strerror(errno)); - return -1; - } - strcpy(helper.sun_path, path); - helper.sun_family = AF_UNIX; - size = strlen(helper.sun_path) + sizeof(helper.sun_family); - if (connect(sockfd, (struct sockaddr *)&helper, size) < 0) { - error_report("Failed to connect to %s: %s", path, strerror(errno)); - close(sockfd); - return -1; - } - - /* remove the socket for security reasons */ - unlink(path); - return sockfd; -} - -static int proxy_parse_opts(QemuOpts *opts, struct FsDriverEntry *fs) -{ - const char *socket = qemu_opt_get(opts, "socket"); - const char *sock_fd = qemu_opt_get(opts, "sock_fd"); - - if (!socket && !sock_fd) { - error_report("Must specify either socket or sock_fd"); - return -1; - } - if (socket && sock_fd) { - error_report("Both socket and sock_fd options specified"); - return -1; - } - if (socket) { - fs->path = g_strdup(socket); - fs->export_flags = V9FS_PROXY_SOCK_NAME; - } else { - fs->path = g_strdup(sock_fd); - fs->export_flags = V9FS_PROXY_SOCK_FD; - } - return 0; -} - -static int proxy_init(FsContext *ctx) -{ - V9fsProxy *proxy = g_malloc(sizeof(V9fsProxy)); - int sock_id; - - if (ctx->export_flags & V9FS_PROXY_SOCK_NAME) { - sock_id = connect_namedsocket(ctx->fs_root); - } else { - sock_id = atoi(ctx->fs_root); - if (sock_id < 0) { - error_report("Socket descriptor not initialized"); - } - } - if (sock_id < 0) { - g_free(proxy); - return -1; - } - g_free(ctx->fs_root); - ctx->fs_root = NULL; - - proxy->in_iovec.iov_base = g_malloc(PROXY_MAX_IO_SZ + PROXY_HDR_SZ); - proxy->in_iovec.iov_len = PROXY_MAX_IO_SZ + PROXY_HDR_SZ; - proxy->out_iovec.iov_base = g_malloc(PROXY_MAX_IO_SZ + PROXY_HDR_SZ); - proxy->out_iovec.iov_len = PROXY_MAX_IO_SZ + PROXY_HDR_SZ; - - ctx->private = proxy; - proxy->sockfd = sock_id; - qemu_mutex_init(&proxy->mutex); - - ctx->export_flags |= V9FS_PATHNAME_FSCONTEXT; - ctx->exops.get_st_gen = proxy_ioc_getversion; - return 0; -} - -FileOperations proxy_ops = { - .parse_opts = proxy_parse_opts, - .init = proxy_init, - .lstat = proxy_lstat, - .readlink = proxy_readlink, - .close = proxy_close, - .closedir = proxy_closedir, - .open = proxy_open, - .opendir = proxy_opendir, - .rewinddir = proxy_rewinddir, - .telldir = proxy_telldir, - .readdir_r = proxy_readdir_r, - .seekdir = proxy_seekdir, - .preadv = proxy_preadv, - .pwritev = proxy_pwritev, - .chmod = proxy_chmod, - .mknod = proxy_mknod, - .mkdir = proxy_mkdir, - .fstat = proxy_fstat, - .open2 = proxy_open2, - .symlink = proxy_symlink, - .link = proxy_link, - .truncate = proxy_truncate, - .rename = proxy_rename, - .chown = proxy_chown, - .utimensat = proxy_utimensat, - .remove = proxy_remove, - .fsync = proxy_fsync, - .statfs = proxy_statfs, - .lgetxattr = proxy_lgetxattr, - .llistxattr = proxy_llistxattr, - .lsetxattr = proxy_lsetxattr, - .lremovexattr = proxy_lremovexattr, - .name_to_path = proxy_name_to_path, - .renameat = proxy_renameat, - .unlinkat = proxy_unlinkat, -}; diff --git a/qemu/hw/9pfs/9p-proxy.h b/qemu/hw/9pfs/9p-proxy.h deleted file mode 100644 index ba9ca203d..000000000 --- a/qemu/hw/9pfs/9p-proxy.h +++ /dev/null @@ -1,95 +0,0 @@ -/* - * 9p Proxy callback - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * M. Mohan Kumar - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - */ -#ifndef _QEMU_9P_PROXY_H -#define _QEMU_9P_PROXY_H - -#define PROXY_MAX_IO_SZ (64 * 1024) -#define V9FS_FD_VALID INT_MAX - -/* - * proxy iovec only support one element and - * marsha/unmarshal doesn't do little endian conversion. - */ -#define proxy_unmarshal(in_sg, offset, fmt, args...) \ - v9fs_iov_unmarshal(in_sg, 1, offset, 0, fmt, ##args) -#define proxy_marshal(out_sg, offset, fmt, args...) \ - v9fs_iov_marshal(out_sg, 1, offset, 0, fmt, ##args) - -union MsgControl { - struct cmsghdr cmsg; - char control[CMSG_SPACE(sizeof(int))]; -}; - -typedef struct { - uint32_t type; - uint32_t size; -} ProxyHeader; - -#define PROXY_HDR_SZ (sizeof(ProxyHeader)) - -enum { - T_SUCCESS = 0, - T_ERROR, - T_OPEN, - T_CREATE, - T_MKNOD, - T_MKDIR, - T_SYMLINK, - T_LINK, - T_LSTAT, - T_READLINK, - T_STATFS, - T_CHMOD, - T_CHOWN, - T_TRUNCATE, - T_UTIME, - T_RENAME, - T_REMOVE, - T_LGETXATTR, - T_LLISTXATTR, - T_LSETXATTR, - T_LREMOVEXATTR, - T_GETVERSION, -}; - -typedef struct { - uint64_t st_dev; - uint64_t st_ino; - uint64_t st_nlink; - uint32_t st_mode; - uint32_t st_uid; - uint32_t st_gid; - uint64_t st_rdev; - uint64_t st_size; - uint64_t st_blksize; - uint64_t st_blocks; - uint64_t st_atim_sec; - uint64_t st_atim_nsec; - uint64_t st_mtim_sec; - uint64_t st_mtim_nsec; - uint64_t st_ctim_sec; - uint64_t st_ctim_nsec; -} ProxyStat; - -typedef struct { - uint64_t f_type; - uint64_t f_bsize; - uint64_t f_blocks; - uint64_t f_bfree; - uint64_t f_bavail; - uint64_t f_files; - uint64_t f_ffree; - uint64_t f_fsid[2]; - uint64_t f_namelen; - uint64_t f_frsize; -} ProxyStatFS; -#endif diff --git a/qemu/hw/9pfs/9p-synth.c b/qemu/hw/9pfs/9p-synth.c deleted file mode 100644 index f1475dfd6..000000000 --- a/qemu/hw/9pfs/9p-synth.c +++ /dev/null @@ -1,574 +0,0 @@ -/* - * Virtio 9p synthetic file system support - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Malahal Naineni - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "hw/virtio/virtio.h" -#include "9p.h" -#include "9p-xattr.h" -#include "fsdev/qemu-fsdev.h" -#include "9p-synth.h" -#include "qemu/rcu.h" -#include "qemu/rcu_queue.h" -#include "qemu/cutils.h" - -/* Root node for synth file system */ -static V9fsSynthNode v9fs_synth_root = { - .name = "/", - .actual_attr = { - .mode = 0555 | S_IFDIR, - .nlink = 1, - }, - .attr = &v9fs_synth_root.actual_attr, -}; - -static QemuMutex v9fs_synth_mutex; -static int v9fs_synth_node_count; -/* set to 1 when the synth fs is ready */ -static int v9fs_synth_fs; - -static V9fsSynthNode *v9fs_add_dir_node(V9fsSynthNode *parent, int mode, - const char *name, - V9fsSynthNodeAttr *attr, int inode) -{ - V9fsSynthNode *node; - - /* Add directory type and remove write bits */ - mode = ((mode & 0777) | S_IFDIR) & ~(S_IWUSR | S_IWGRP | S_IWOTH); - node = g_malloc0(sizeof(V9fsSynthNode)); - if (attr) { - /* We are adding .. or . entries */ - node->attr = attr; - node->attr->nlink++; - } else { - node->attr = &node->actual_attr; - node->attr->inode = inode; - node->attr->nlink = 1; - /* We don't allow write to directories */ - node->attr->mode = mode; - node->attr->write = NULL; - node->attr->read = NULL; - } - node->private = node; - pstrcpy(node->name, sizeof(node->name), name); - QLIST_INSERT_HEAD_RCU(&parent->child, node, sibling); - return node; -} - -int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode, - const char *name, V9fsSynthNode **result) -{ - int ret; - V9fsSynthNode *node, *tmp; - - if (!v9fs_synth_fs) { - return EAGAIN; - } - if (!name || (strlen(name) >= NAME_MAX)) { - return EINVAL; - } - if (!parent) { - parent = &v9fs_synth_root; - } - qemu_mutex_lock(&v9fs_synth_mutex); - QLIST_FOREACH(tmp, &parent->child, sibling) { - if (!strcmp(tmp->name, name)) { - ret = EEXIST; - goto err_out; - } - } - /* Add the name */ - node = v9fs_add_dir_node(parent, mode, name, NULL, v9fs_synth_node_count++); - v9fs_add_dir_node(node, parent->attr->mode, "..", - parent->attr, parent->attr->inode); - v9fs_add_dir_node(node, node->attr->mode, ".", - node->attr, node->attr->inode); - *result = node; - ret = 0; -err_out: - qemu_mutex_unlock(&v9fs_synth_mutex); - return ret; -} - -int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode, - const char *name, v9fs_synth_read read, - v9fs_synth_write write, void *arg) -{ - int ret; - V9fsSynthNode *node, *tmp; - - if (!v9fs_synth_fs) { - return EAGAIN; - } - if (!name || (strlen(name) >= NAME_MAX)) { - return EINVAL; - } - if (!parent) { - parent = &v9fs_synth_root; - } - - qemu_mutex_lock(&v9fs_synth_mutex); - QLIST_FOREACH(tmp, &parent->child, sibling) { - if (!strcmp(tmp->name, name)) { - ret = EEXIST; - goto err_out; - } - } - /* Add file type and remove write bits */ - mode = ((mode & 0777) | S_IFREG); - node = g_malloc0(sizeof(V9fsSynthNode)); - node->attr = &node->actual_attr; - node->attr->inode = v9fs_synth_node_count++; - node->attr->nlink = 1; - node->attr->read = read; - node->attr->write = write; - node->attr->mode = mode; - node->private = arg; - pstrcpy(node->name, sizeof(node->name), name); - QLIST_INSERT_HEAD_RCU(&parent->child, node, sibling); - ret = 0; -err_out: - qemu_mutex_unlock(&v9fs_synth_mutex); - return ret; -} - -static void v9fs_synth_fill_statbuf(V9fsSynthNode *node, struct stat *stbuf) -{ - stbuf->st_dev = 0; - stbuf->st_ino = node->attr->inode; - stbuf->st_mode = node->attr->mode; - stbuf->st_nlink = node->attr->nlink; - stbuf->st_uid = 0; - stbuf->st_gid = 0; - stbuf->st_rdev = 0; - stbuf->st_size = 0; - stbuf->st_blksize = 0; - stbuf->st_blocks = 0; - stbuf->st_atime = 0; - stbuf->st_mtime = 0; - stbuf->st_ctime = 0; -} - -static int v9fs_synth_lstat(FsContext *fs_ctx, - V9fsPath *fs_path, struct stat *stbuf) -{ - V9fsSynthNode *node = *(V9fsSynthNode **)fs_path->data; - - v9fs_synth_fill_statbuf(node, stbuf); - return 0; -} - -static int v9fs_synth_fstat(FsContext *fs_ctx, int fid_type, - V9fsFidOpenState *fs, struct stat *stbuf) -{ - V9fsSynthOpenState *synth_open = fs->private; - v9fs_synth_fill_statbuf(synth_open->node, stbuf); - return 0; -} - -static int v9fs_synth_opendir(FsContext *ctx, - V9fsPath *fs_path, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open; - V9fsSynthNode *node = *(V9fsSynthNode **)fs_path->data; - - synth_open = g_malloc(sizeof(*synth_open)); - synth_open->node = node; - node->open_count++; - fs->private = synth_open; - return 0; -} - -static int v9fs_synth_closedir(FsContext *ctx, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - - node->open_count--; - g_free(synth_open); - fs->private = NULL; - return 0; -} - -static off_t v9fs_synth_telldir(FsContext *ctx, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open = fs->private; - return synth_open->offset; -} - -static void v9fs_synth_seekdir(FsContext *ctx, V9fsFidOpenState *fs, off_t off) -{ - V9fsSynthOpenState *synth_open = fs->private; - synth_open->offset = off; -} - -static void v9fs_synth_rewinddir(FsContext *ctx, V9fsFidOpenState *fs) -{ - v9fs_synth_seekdir(ctx, fs, 0); -} - -static void v9fs_synth_direntry(V9fsSynthNode *node, - struct dirent *entry, off_t off) -{ - strcpy(entry->d_name, node->name); - entry->d_ino = node->attr->inode; - entry->d_off = off + 1; -} - -static int v9fs_synth_get_dentry(V9fsSynthNode *dir, struct dirent *entry, - struct dirent **result, off_t off) -{ - int i = 0; - V9fsSynthNode *node; - - rcu_read_lock(); - QLIST_FOREACH(node, &dir->child, sibling) { - /* This is the off child of the directory */ - if (i == off) { - break; - } - i++; - } - rcu_read_unlock(); - if (!node) { - /* end of directory */ - *result = NULL; - return 0; - } - v9fs_synth_direntry(node, entry, off); - *result = entry; - return 0; -} - -static int v9fs_synth_readdir_r(FsContext *ctx, V9fsFidOpenState *fs, - struct dirent *entry, struct dirent **result) -{ - int ret; - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - ret = v9fs_synth_get_dentry(node, entry, result, synth_open->offset); - if (!ret && *result != NULL) { - synth_open->offset++; - } - return ret; -} - -static int v9fs_synth_open(FsContext *ctx, V9fsPath *fs_path, - int flags, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open; - V9fsSynthNode *node = *(V9fsSynthNode **)fs_path->data; - - synth_open = g_malloc(sizeof(*synth_open)); - synth_open->node = node; - node->open_count++; - fs->private = synth_open; - return 0; -} - -static int v9fs_synth_open2(FsContext *fs_ctx, V9fsPath *dir_path, - const char *name, int flags, - FsCred *credp, V9fsFidOpenState *fs) -{ - errno = ENOSYS; - return -1; -} - -static int v9fs_synth_close(FsContext *ctx, V9fsFidOpenState *fs) -{ - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - - node->open_count--; - g_free(synth_open); - fs->private = NULL; - return 0; -} - -static ssize_t v9fs_synth_pwritev(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ - int i, count = 0, wcount; - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - if (!node->attr->write) { - errno = EPERM; - return -1; - } - for (i = 0; i < iovcnt; i++) { - wcount = node->attr->write(iov[i].iov_base, iov[i].iov_len, - offset, node->private); - offset += wcount; - count += wcount; - /* If we wrote less than requested. we are done */ - if (wcount < iov[i].iov_len) { - break; - } - } - return count; -} - -static ssize_t v9fs_synth_preadv(FsContext *ctx, V9fsFidOpenState *fs, - const struct iovec *iov, - int iovcnt, off_t offset) -{ - int i, count = 0, rcount; - V9fsSynthOpenState *synth_open = fs->private; - V9fsSynthNode *node = synth_open->node; - if (!node->attr->read) { - errno = EPERM; - return -1; - } - for (i = 0; i < iovcnt; i++) { - rcount = node->attr->read(iov[i].iov_base, iov[i].iov_len, - offset, node->private); - offset += rcount; - count += rcount; - /* If we read less than requested. we are done */ - if (rcount < iov[i].iov_len) { - break; - } - } - return count; -} - -static int v9fs_synth_truncate(FsContext *ctx, V9fsPath *path, off_t offset) -{ - errno = ENOSYS; - return -1; -} - -static int v9fs_synth_chmod(FsContext *fs_ctx, V9fsPath *path, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_mknod(FsContext *fs_ctx, V9fsPath *path, - const char *buf, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_mkdir(FsContext *fs_ctx, V9fsPath *path, - const char *buf, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static ssize_t v9fs_synth_readlink(FsContext *fs_ctx, V9fsPath *path, - char *buf, size_t bufsz) -{ - errno = ENOSYS; - return -1; -} - -static int v9fs_synth_symlink(FsContext *fs_ctx, const char *oldpath, - V9fsPath *newpath, const char *buf, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_link(FsContext *fs_ctx, V9fsPath *oldpath, - V9fsPath *newpath, const char *buf) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_rename(FsContext *ctx, const char *oldpath, - const char *newpath) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_chown(FsContext *fs_ctx, V9fsPath *path, FsCred *credp) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_utimensat(FsContext *fs_ctx, V9fsPath *path, - const struct timespec *buf) -{ - errno = EPERM; - return 0; -} - -static int v9fs_synth_remove(FsContext *ctx, const char *path) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_fsync(FsContext *ctx, int fid_type, - V9fsFidOpenState *fs, int datasync) -{ - errno = ENOSYS; - return 0; -} - -static int v9fs_synth_statfs(FsContext *s, V9fsPath *fs_path, - struct statfs *stbuf) -{ - stbuf->f_type = 0xABCD; - stbuf->f_bsize = 512; - stbuf->f_blocks = 0; - stbuf->f_files = v9fs_synth_node_count; - stbuf->f_namelen = NAME_MAX; - return 0; -} - -static ssize_t v9fs_synth_lgetxattr(FsContext *ctx, V9fsPath *path, - const char *name, void *value, size_t size) -{ - errno = ENOTSUP; - return -1; -} - -static ssize_t v9fs_synth_llistxattr(FsContext *ctx, V9fsPath *path, - void *value, size_t size) -{ - errno = ENOTSUP; - return -1; -} - -static int v9fs_synth_lsetxattr(FsContext *ctx, V9fsPath *path, - const char *name, void *value, - size_t size, int flags) -{ - errno = ENOTSUP; - return -1; -} - -static int v9fs_synth_lremovexattr(FsContext *ctx, - V9fsPath *path, const char *name) -{ - errno = ENOTSUP; - return -1; -} - -static int v9fs_synth_name_to_path(FsContext *ctx, V9fsPath *dir_path, - const char *name, V9fsPath *target) -{ - V9fsSynthNode *node; - V9fsSynthNode *dir_node; - - /* "." and ".." are not allowed */ - if (!strcmp(name, ".") || !strcmp(name, "..")) { - errno = EINVAL; - return -1; - - } - if (!dir_path) { - dir_node = &v9fs_synth_root; - } else { - dir_node = *(V9fsSynthNode **)dir_path->data; - } - if (!strcmp(name, "/")) { - node = dir_node; - goto out; - } - /* search for the name in the childern */ - rcu_read_lock(); - QLIST_FOREACH(node, &dir_node->child, sibling) { - if (!strcmp(node->name, name)) { - break; - } - } - rcu_read_unlock(); - - if (!node) { - errno = ENOENT; - return -1; - } -out: - /* Copy the node pointer to fid */ - target->data = g_malloc(sizeof(void *)); - memcpy(target->data, &node, sizeof(void *)); - target->size = sizeof(void *); - return 0; -} - -static int v9fs_synth_renameat(FsContext *ctx, V9fsPath *olddir, - const char *old_name, V9fsPath *newdir, - const char *new_name) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_unlinkat(FsContext *ctx, V9fsPath *dir, - const char *name, int flags) -{ - errno = EPERM; - return -1; -} - -static int v9fs_synth_init(FsContext *ctx) -{ - QLIST_INIT(&v9fs_synth_root.child); - qemu_mutex_init(&v9fs_synth_mutex); - - /* Add "." and ".." entries for root */ - v9fs_add_dir_node(&v9fs_synth_root, v9fs_synth_root.attr->mode, - "..", v9fs_synth_root.attr, v9fs_synth_root.attr->inode); - v9fs_add_dir_node(&v9fs_synth_root, v9fs_synth_root.attr->mode, - ".", v9fs_synth_root.attr, v9fs_synth_root.attr->inode); - - /* Mark the subsystem is ready for use */ - v9fs_synth_fs = 1; - return 0; -} - -FileOperations synth_ops = { - .init = v9fs_synth_init, - .lstat = v9fs_synth_lstat, - .readlink = v9fs_synth_readlink, - .close = v9fs_synth_close, - .closedir = v9fs_synth_closedir, - .open = v9fs_synth_open, - .opendir = v9fs_synth_opendir, - .rewinddir = v9fs_synth_rewinddir, - .telldir = v9fs_synth_telldir, - .readdir_r = v9fs_synth_readdir_r, - .seekdir = v9fs_synth_seekdir, - .preadv = v9fs_synth_preadv, - .pwritev = v9fs_synth_pwritev, - .chmod = v9fs_synth_chmod, - .mknod = v9fs_synth_mknod, - .mkdir = v9fs_synth_mkdir, - .fstat = v9fs_synth_fstat, - .open2 = v9fs_synth_open2, - .symlink = v9fs_synth_symlink, - .link = v9fs_synth_link, - .truncate = v9fs_synth_truncate, - .rename = v9fs_synth_rename, - .chown = v9fs_synth_chown, - .utimensat = v9fs_synth_utimensat, - .remove = v9fs_synth_remove, - .fsync = v9fs_synth_fsync, - .statfs = v9fs_synth_statfs, - .lgetxattr = v9fs_synth_lgetxattr, - .llistxattr = v9fs_synth_llistxattr, - .lsetxattr = v9fs_synth_lsetxattr, - .lremovexattr = v9fs_synth_lremovexattr, - .name_to_path = v9fs_synth_name_to_path, - .renameat = v9fs_synth_renameat, - .unlinkat = v9fs_synth_unlinkat, -}; diff --git a/qemu/hw/9pfs/9p-synth.h b/qemu/hw/9pfs/9p-synth.h deleted file mode 100644 index 82962512a..000000000 --- a/qemu/hw/9pfs/9p-synth.h +++ /dev/null @@ -1,51 +0,0 @@ -/* - * 9p - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ -#ifndef HW_9PFS_SYNTH_H -#define HW_9PFS_SYNTH_H 1 - - -typedef struct V9fsSynthNode V9fsSynthNode; -typedef ssize_t (*v9fs_synth_read)(void *buf, int len, off_t offset, - void *arg); -typedef ssize_t (*v9fs_synth_write)(void *buf, int len, off_t offset, - void *arg); -typedef struct V9fsSynthNodeAttr { - int mode; - int inode; - int nlink; - v9fs_synth_read read; - v9fs_synth_write write; -} V9fsSynthNodeAttr; - -struct V9fsSynthNode { - QLIST_HEAD(, V9fsSynthNode) child; - QLIST_ENTRY(V9fsSynthNode) sibling; - char name[NAME_MAX]; - V9fsSynthNodeAttr *attr; - V9fsSynthNodeAttr actual_attr; - void *private; - int open_count; -}; - -typedef struct V9fsSynthOpenState { - off_t offset; - V9fsSynthNode *node; -} V9fsSynthOpenState; - -extern int qemu_v9fs_synth_mkdir(V9fsSynthNode *parent, int mode, - const char *name, V9fsSynthNode **result); -extern int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int mode, - const char *name, v9fs_synth_read read, - v9fs_synth_write write, void *arg); - -#endif diff --git a/qemu/hw/9pfs/9p-xattr-user.c b/qemu/hw/9pfs/9p-xattr-user.c deleted file mode 100644 index f87530c8b..000000000 --- a/qemu/hw/9pfs/9p-xattr-user.c +++ /dev/null @@ -1,127 +0,0 @@ -/* - * 9p user. xattr callback - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "9p.h" -#include "fsdev/file-op-9p.h" -#include "9p-xattr.h" - - -static ssize_t mp_user_getxattr(FsContext *ctx, const char *path, - const char *name, void *value, size_t size) -{ - char *buffer; - ssize_t ret; - - if (strncmp(name, "user.virtfs.", 12) == 0) { - /* - * Don't allow fetch of user.virtfs namesapce - * in case of mapped security - */ - errno = ENOATTR; - return -1; - } - buffer = rpath(ctx, path); - ret = lgetxattr(buffer, name, value, size); - g_free(buffer); - return ret; -} - -static ssize_t mp_user_listxattr(FsContext *ctx, const char *path, - char *name, void *value, size_t size) -{ - int name_size = strlen(name) + 1; - if (strncmp(name, "user.virtfs.", 12) == 0) { - - /* check if it is a mapped posix acl */ - if (strncmp(name, "user.virtfs.system.posix_acl_", 29) == 0) { - /* adjust the name and size */ - name += 12; - name_size -= 12; - } else { - /* - * Don't allow fetch of user.virtfs namesapce - * in case of mapped security - */ - return 0; - } - } - if (!value) { - return name_size; - } - - if (size < name_size) { - errno = ERANGE; - return -1; - } - - /* name_size includes the trailing NUL. */ - memcpy(value, name, name_size); - return name_size; -} - -static int mp_user_setxattr(FsContext *ctx, const char *path, const char *name, - void *value, size_t size, int flags) -{ - char *buffer; - int ret; - - if (strncmp(name, "user.virtfs.", 12) == 0) { - /* - * Don't allow fetch of user.virtfs namesapce - * in case of mapped security - */ - errno = EACCES; - return -1; - } - buffer = rpath(ctx, path); - ret = lsetxattr(buffer, name, value, size, flags); - g_free(buffer); - return ret; -} - -static int mp_user_removexattr(FsContext *ctx, - const char *path, const char *name) -{ - char *buffer; - int ret; - - if (strncmp(name, "user.virtfs.", 12) == 0) { - /* - * Don't allow fetch of user.virtfs namesapce - * in case of mapped security - */ - errno = EACCES; - return -1; - } - buffer = rpath(ctx, path); - ret = lremovexattr(buffer, name); - g_free(buffer); - return ret; -} - -XattrOperations mapped_user_xattr = { - .name = "user.", - .getxattr = mp_user_getxattr, - .setxattr = mp_user_setxattr, - .listxattr = mp_user_listxattr, - .removexattr = mp_user_removexattr, -}; - -XattrOperations passthrough_user_xattr = { - .name = "user.", - .getxattr = pt_getxattr, - .setxattr = pt_setxattr, - .listxattr = pt_listxattr, - .removexattr = pt_removexattr, -}; diff --git a/qemu/hw/9pfs/9p-xattr.c b/qemu/hw/9pfs/9p-xattr.c deleted file mode 100644 index 5d8595ed9..000000000 --- a/qemu/hw/9pfs/9p-xattr.c +++ /dev/null @@ -1,164 +0,0 @@ -/* - * 9p xattr callback - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "9p.h" -#include "fsdev/file-op-9p.h" -#include "9p-xattr.h" - - -static XattrOperations *get_xattr_operations(XattrOperations **h, - const char *name) -{ - XattrOperations *xops; - for (xops = *(h)++; xops != NULL; xops = *(h)++) { - if (!strncmp(name, xops->name, strlen(xops->name))) { - return xops; - } - } - return NULL; -} - -ssize_t v9fs_get_xattr(FsContext *ctx, const char *path, - const char *name, void *value, size_t size) -{ - XattrOperations *xops = get_xattr_operations(ctx->xops, name); - if (xops) { - return xops->getxattr(ctx, path, name, value, size); - } - errno = EOPNOTSUPP; - return -1; -} - -ssize_t pt_listxattr(FsContext *ctx, const char *path, - char *name, void *value, size_t size) -{ - int name_size = strlen(name) + 1; - if (!value) { - return name_size; - } - - if (size < name_size) { - errno = ERANGE; - return -1; - } - - /* no need for strncpy: name_size is strlen(name)+1 */ - memcpy(value, name, name_size); - return name_size; -} - - -/* - * Get the list and pass to each layer to find out whether - * to send the data or not - */ -ssize_t v9fs_list_xattr(FsContext *ctx, const char *path, - void *value, size_t vsize) -{ - ssize_t size = 0; - char *buffer; - void *ovalue = value; - XattrOperations *xops; - char *orig_value, *orig_value_start; - ssize_t xattr_len, parsed_len = 0, attr_len; - - /* Get the actual len */ - buffer = rpath(ctx, path); - xattr_len = llistxattr(buffer, value, 0); - if (xattr_len <= 0) { - g_free(buffer); - return xattr_len; - } - - /* Now fetch the xattr and find the actual size */ - orig_value = g_malloc(xattr_len); - xattr_len = llistxattr(buffer, orig_value, xattr_len); - g_free(buffer); - - /* store the orig pointer */ - orig_value_start = orig_value; - while (xattr_len > parsed_len) { - xops = get_xattr_operations(ctx->xops, orig_value); - if (!xops) { - goto next_entry; - } - - if (!value) { - size += xops->listxattr(ctx, path, orig_value, value, vsize); - } else { - size = xops->listxattr(ctx, path, orig_value, value, vsize); - if (size < 0) { - goto err_out; - } - value += size; - vsize -= size; - } -next_entry: - /* Got the next entry */ - attr_len = strlen(orig_value) + 1; - parsed_len += attr_len; - orig_value += attr_len; - } - if (value) { - size = value - ovalue; - } - -err_out: - g_free(orig_value_start); - return size; -} - -int v9fs_set_xattr(FsContext *ctx, const char *path, const char *name, - void *value, size_t size, int flags) -{ - XattrOperations *xops = get_xattr_operations(ctx->xops, name); - if (xops) { - return xops->setxattr(ctx, path, name, value, size, flags); - } - errno = EOPNOTSUPP; - return -1; - -} - -int v9fs_remove_xattr(FsContext *ctx, - const char *path, const char *name) -{ - XattrOperations *xops = get_xattr_operations(ctx->xops, name); - if (xops) { - return xops->removexattr(ctx, path, name); - } - errno = EOPNOTSUPP; - return -1; - -} - -XattrOperations *mapped_xattr_ops[] = { - &mapped_user_xattr, - &mapped_pacl_xattr, - &mapped_dacl_xattr, - NULL, -}; - -XattrOperations *passthrough_xattr_ops[] = { - &passthrough_user_xattr, - &passthrough_acl_xattr, - NULL, -}; - -/* for .user none model should be same as passthrough */ -XattrOperations *none_xattr_ops[] = { - &passthrough_user_xattr, - &none_acl_xattr, - NULL, -}; diff --git a/qemu/hw/9pfs/9p-xattr.h b/qemu/hw/9pfs/9p-xattr.h deleted file mode 100644 index 4d39a2026..000000000 --- a/qemu/hw/9pfs/9p-xattr.h +++ /dev/null @@ -1,120 +0,0 @@ -/* - * 9p - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ -#ifndef _QEMU_9P_XATTR_H -#define _QEMU_9P_XATTR_H - -#include "qemu/xattr.h" - -typedef struct xattr_operations -{ - const char *name; - ssize_t (*getxattr)(FsContext *ctx, const char *path, - const char *name, void *value, size_t size); - ssize_t (*listxattr)(FsContext *ctx, const char *path, - char *name, void *value, size_t size); - int (*setxattr)(FsContext *ctx, const char *path, const char *name, - void *value, size_t size, int flags); - int (*removexattr)(FsContext *ctx, - const char *path, const char *name); -} XattrOperations; - - -extern XattrOperations mapped_user_xattr; -extern XattrOperations passthrough_user_xattr; - -extern XattrOperations mapped_pacl_xattr; -extern XattrOperations mapped_dacl_xattr; -extern XattrOperations passthrough_acl_xattr; -extern XattrOperations none_acl_xattr; - -extern XattrOperations *mapped_xattr_ops[]; -extern XattrOperations *passthrough_xattr_ops[]; -extern XattrOperations *none_xattr_ops[]; - -ssize_t v9fs_get_xattr(FsContext *ctx, const char *path, const char *name, - void *value, size_t size); -ssize_t v9fs_list_xattr(FsContext *ctx, const char *path, void *value, - size_t vsize); -int v9fs_set_xattr(FsContext *ctx, const char *path, const char *name, - void *value, size_t size, int flags); -int v9fs_remove_xattr(FsContext *ctx, const char *path, const char *name); -ssize_t pt_listxattr(FsContext *ctx, const char *path, char *name, void *value, - size_t size); - -static inline ssize_t pt_getxattr(FsContext *ctx, const char *path, - const char *name, void *value, size_t size) -{ - char *buffer; - ssize_t ret; - - buffer = rpath(ctx, path); - ret = lgetxattr(buffer, name, value, size); - g_free(buffer); - return ret; -} - -static inline int pt_setxattr(FsContext *ctx, const char *path, - const char *name, void *value, - size_t size, int flags) -{ - char *buffer; - int ret; - - buffer = rpath(ctx, path); - ret = lsetxattr(buffer, name, value, size, flags); - g_free(buffer); - return ret; -} - -static inline int pt_removexattr(FsContext *ctx, - const char *path, const char *name) -{ - char *buffer; - int ret; - - buffer = rpath(ctx, path); - ret = lremovexattr(path, name); - g_free(buffer); - return ret; -} - -static inline ssize_t notsup_getxattr(FsContext *ctx, const char *path, - const char *name, void *value, - size_t size) -{ - errno = ENOTSUP; - return -1; -} - -static inline int notsup_setxattr(FsContext *ctx, const char *path, - const char *name, void *value, - size_t size, int flags) -{ - errno = ENOTSUP; - return -1; -} - -static inline ssize_t notsup_listxattr(FsContext *ctx, const char *path, - char *name, void *value, size_t size) -{ - return 0; -} - -static inline int notsup_removexattr(FsContext *ctx, - const char *path, const char *name) -{ - errno = ENOTSUP; - return -1; -} - -#endif diff --git a/qemu/hw/9pfs/9p.c b/qemu/hw/9pfs/9p.c deleted file mode 100644 index f5e30125f..000000000 --- a/qemu/hw/9pfs/9p.c +++ /dev/null @@ -1,3380 +0,0 @@ -/* - * Virtio 9p backend - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Anthony Liguori - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "hw/virtio/virtio.h" -#include "hw/i386/pc.h" -#include "qapi/error.h" -#include "qemu/error-report.h" -#include "qemu/iov.h" -#include "qemu/sockets.h" -#include "virtio-9p.h" -#include "fsdev/qemu-fsdev.h" -#include "9p-xattr.h" -#include "coth.h" -#include "trace.h" -#include "migration/migration.h" - -int open_fd_hw; -int total_open_fd; -static int open_fd_rc; - -enum { - Oread = 0x00, - Owrite = 0x01, - Ordwr = 0x02, - Oexec = 0x03, - Oexcl = 0x04, - Otrunc = 0x10, - Orexec = 0x20, - Orclose = 0x40, - Oappend = 0x80, -}; - -ssize_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) -{ - ssize_t ret; - va_list ap; - - va_start(ap, fmt); - ret = virtio_pdu_vmarshal(pdu, offset, fmt, ap); - va_end(ap); - - return ret; -} - -ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...) -{ - ssize_t ret; - va_list ap; - - va_start(ap, fmt); - ret = virtio_pdu_vunmarshal(pdu, offset, fmt, ap); - va_end(ap); - - return ret; -} - -static void pdu_push_and_notify(V9fsPDU *pdu) -{ - virtio_9p_push_and_notify(pdu); -} - -static int omode_to_uflags(int8_t mode) -{ - int ret = 0; - - switch (mode & 3) { - case Oread: - ret = O_RDONLY; - break; - case Ordwr: - ret = O_RDWR; - break; - case Owrite: - ret = O_WRONLY; - break; - case Oexec: - ret = O_RDONLY; - break; - } - - if (mode & Otrunc) { - ret |= O_TRUNC; - } - - if (mode & Oappend) { - ret |= O_APPEND; - } - - if (mode & Oexcl) { - ret |= O_EXCL; - } - - return ret; -} - -struct dotl_openflag_map { - int dotl_flag; - int open_flag; -}; - -static int dotl_to_open_flags(int flags) -{ - int i; - /* - * We have same bits for P9_DOTL_READONLY, P9_DOTL_WRONLY - * and P9_DOTL_NOACCESS - */ - int oflags = flags & O_ACCMODE; - - struct dotl_openflag_map dotl_oflag_map[] = { - { P9_DOTL_CREATE, O_CREAT }, - { P9_DOTL_EXCL, O_EXCL }, - { P9_DOTL_NOCTTY , O_NOCTTY }, - { P9_DOTL_TRUNC, O_TRUNC }, - { P9_DOTL_APPEND, O_APPEND }, - { P9_DOTL_NONBLOCK, O_NONBLOCK } , - { P9_DOTL_DSYNC, O_DSYNC }, - { P9_DOTL_FASYNC, FASYNC }, - { P9_DOTL_DIRECT, O_DIRECT }, - { P9_DOTL_LARGEFILE, O_LARGEFILE }, - { P9_DOTL_DIRECTORY, O_DIRECTORY }, - { P9_DOTL_NOFOLLOW, O_NOFOLLOW }, - { P9_DOTL_NOATIME, O_NOATIME }, - { P9_DOTL_SYNC, O_SYNC }, - }; - - for (i = 0; i < ARRAY_SIZE(dotl_oflag_map); i++) { - if (flags & dotl_oflag_map[i].dotl_flag) { - oflags |= dotl_oflag_map[i].open_flag; - } - } - - return oflags; -} - -void cred_init(FsCred *credp) -{ - credp->fc_uid = -1; - credp->fc_gid = -1; - credp->fc_mode = -1; - credp->fc_rdev = -1; -} - -static int get_dotl_openflags(V9fsState *s, int oflags) -{ - int flags; - /* - * Filter the client open flags - */ - flags = dotl_to_open_flags(oflags); - flags &= ~(O_NOCTTY | O_ASYNC | O_CREAT); - /* - * Ignore direct disk access hint until the server supports it. - */ - flags &= ~O_DIRECT; - return flags; -} - -void v9fs_path_init(V9fsPath *path) -{ - path->data = NULL; - path->size = 0; -} - -void v9fs_path_free(V9fsPath *path) -{ - g_free(path->data); - path->data = NULL; - path->size = 0; -} - -void v9fs_path_copy(V9fsPath *lhs, V9fsPath *rhs) -{ - v9fs_path_free(lhs); - lhs->data = g_malloc(rhs->size); - memcpy(lhs->data, rhs->data, rhs->size); - lhs->size = rhs->size; -} - -int v9fs_name_to_path(V9fsState *s, V9fsPath *dirpath, - const char *name, V9fsPath *path) -{ - int err; - err = s->ops->name_to_path(&s->ctx, dirpath, name, path); - if (err < 0) { - err = -errno; - } - return err; -} - -/* - * Return TRUE if s1 is an ancestor of s2. - * - * E.g. "a/b" is an ancestor of "a/b/c" but not of "a/bc/d". - * As a special case, We treat s1 as ancestor of s2 if they are same! - */ -static int v9fs_path_is_ancestor(V9fsPath *s1, V9fsPath *s2) -{ - if (!strncmp(s1->data, s2->data, s1->size - 1)) { - if (s2->data[s1->size - 1] == '\0' || s2->data[s1->size - 1] == '/') { - return 1; - } - } - return 0; -} - -static size_t v9fs_string_size(V9fsString *str) -{ - return str->size; -} - -/* - * returns 0 if fid got re-opened, 1 if not, < 0 on error */ -static int v9fs_reopen_fid(V9fsPDU *pdu, V9fsFidState *f) -{ - int err = 1; - if (f->fid_type == P9_FID_FILE) { - if (f->fs.fd == -1) { - do { - err = v9fs_co_open(pdu, f, f->open_flags); - } while (err == -EINTR && !pdu->cancelled); - } - } else if (f->fid_type == P9_FID_DIR) { - if (f->fs.dir == NULL) { - do { - err = v9fs_co_opendir(pdu, f); - } while (err == -EINTR && !pdu->cancelled); - } - } - return err; -} - -static V9fsFidState *get_fid(V9fsPDU *pdu, int32_t fid) -{ - int err; - V9fsFidState *f; - V9fsState *s = pdu->s; - - for (f = s->fid_list; f; f = f->next) { - BUG_ON(f->clunked); - if (f->fid == fid) { - /* - * Update the fid ref upfront so that - * we don't get reclaimed when we yield - * in open later. - */ - f->ref++; - /* - * check whether we need to reopen the - * file. We might have closed the fd - * while trying to free up some file - * descriptors. - */ - err = v9fs_reopen_fid(pdu, f); - if (err < 0) { - f->ref--; - return NULL; - } - /* - * Mark the fid as referenced so that the LRU - * reclaim won't close the file descriptor - */ - f->flags |= FID_REFERENCED; - return f; - } - } - return NULL; -} - -static V9fsFidState *alloc_fid(V9fsState *s, int32_t fid) -{ - V9fsFidState *f; - - for (f = s->fid_list; f; f = f->next) { - /* If fid is already there return NULL */ - BUG_ON(f->clunked); - if (f->fid == fid) { - return NULL; - } - } - f = g_malloc0(sizeof(V9fsFidState)); - f->fid = fid; - f->fid_type = P9_FID_NONE; - f->ref = 1; - /* - * Mark the fid as referenced so that the LRU - * reclaim won't close the file descriptor - */ - f->flags |= FID_REFERENCED; - f->next = s->fid_list; - s->fid_list = f; - - return f; -} - -static int v9fs_xattr_fid_clunk(V9fsPDU *pdu, V9fsFidState *fidp) -{ - int retval = 0; - - if (fidp->fs.xattr.copied_len == -1) { - /* getxattr/listxattr fid */ - goto free_value; - } - /* - * if this is fid for setxattr. clunk should - * result in setxattr localcall - */ - if (fidp->fs.xattr.len != fidp->fs.xattr.copied_len) { - /* clunk after partial write */ - retval = -EINVAL; - goto free_out; - } - if (fidp->fs.xattr.len) { - retval = v9fs_co_lsetxattr(pdu, &fidp->path, &fidp->fs.xattr.name, - fidp->fs.xattr.value, - fidp->fs.xattr.len, - fidp->fs.xattr.flags); - } else { - retval = v9fs_co_lremovexattr(pdu, &fidp->path, &fidp->fs.xattr.name); - } -free_out: - v9fs_string_free(&fidp->fs.xattr.name); -free_value: - g_free(fidp->fs.xattr.value); - return retval; -} - -static int free_fid(V9fsPDU *pdu, V9fsFidState *fidp) -{ - int retval = 0; - - if (fidp->fid_type == P9_FID_FILE) { - /* If we reclaimed the fd no need to close */ - if (fidp->fs.fd != -1) { - retval = v9fs_co_close(pdu, &fidp->fs); - } - } else if (fidp->fid_type == P9_FID_DIR) { - if (fidp->fs.dir != NULL) { - retval = v9fs_co_closedir(pdu, &fidp->fs); - } - } else if (fidp->fid_type == P9_FID_XATTR) { - retval = v9fs_xattr_fid_clunk(pdu, fidp); - } - v9fs_path_free(&fidp->path); - g_free(fidp); - return retval; -} - -static int put_fid(V9fsPDU *pdu, V9fsFidState *fidp) -{ - BUG_ON(!fidp->ref); - fidp->ref--; - /* - * Don't free the fid if it is in reclaim list - */ - if (!fidp->ref && fidp->clunked) { - if (fidp->fid == pdu->s->root_fid) { - /* - * if the clunked fid is root fid then we - * have unmounted the fs on the client side. - * delete the migration blocker. Ideally, this - * should be hooked to transport close notification - */ - if (pdu->s->migration_blocker) { - migrate_del_blocker(pdu->s->migration_blocker); - error_free(pdu->s->migration_blocker); - pdu->s->migration_blocker = NULL; - } - } - return free_fid(pdu, fidp); - } - return 0; -} - -static V9fsFidState *clunk_fid(V9fsState *s, int32_t fid) -{ - V9fsFidState **fidpp, *fidp; - - for (fidpp = &s->fid_list; *fidpp; fidpp = &(*fidpp)->next) { - if ((*fidpp)->fid == fid) { - break; - } - } - if (*fidpp == NULL) { - return NULL; - } - fidp = *fidpp; - *fidpp = fidp->next; - fidp->clunked = 1; - return fidp; -} - -void v9fs_reclaim_fd(V9fsPDU *pdu) -{ - int reclaim_count = 0; - V9fsState *s = pdu->s; - V9fsFidState *f, *reclaim_list = NULL; - - for (f = s->fid_list; f; f = f->next) { - /* - * Unlink fids cannot be reclaimed. Check - * for them and skip them. Also skip fids - * currently being operated on. - */ - if (f->ref || f->flags & FID_NON_RECLAIMABLE) { - continue; - } - /* - * if it is a recently referenced fid - * we leave the fid untouched and clear the - * reference bit. We come back to it later - * in the next iteration. (a simple LRU without - * moving list elements around) - */ - if (f->flags & FID_REFERENCED) { - f->flags &= ~FID_REFERENCED; - continue; - } - /* - * Add fids to reclaim list. - */ - if (f->fid_type == P9_FID_FILE) { - if (f->fs.fd != -1) { - /* - * Up the reference count so that - * a clunk request won't free this fid - */ - f->ref++; - f->rclm_lst = reclaim_list; - reclaim_list = f; - f->fs_reclaim.fd = f->fs.fd; - f->fs.fd = -1; - reclaim_count++; - } - } else if (f->fid_type == P9_FID_DIR) { - if (f->fs.dir != NULL) { - /* - * Up the reference count so that - * a clunk request won't free this fid - */ - f->ref++; - f->rclm_lst = reclaim_list; - reclaim_list = f; - f->fs_reclaim.dir = f->fs.dir; - f->fs.dir = NULL; - reclaim_count++; - } - } - if (reclaim_count >= open_fd_rc) { - break; - } - } - /* - * Now close the fid in reclaim list. Free them if they - * are already clunked. - */ - while (reclaim_list) { - f = reclaim_list; - reclaim_list = f->rclm_lst; - if (f->fid_type == P9_FID_FILE) { - v9fs_co_close(pdu, &f->fs_reclaim); - } else if (f->fid_type == P9_FID_DIR) { - v9fs_co_closedir(pdu, &f->fs_reclaim); - } - f->rclm_lst = NULL; - /* - * Now drop the fid reference, free it - * if clunked. - */ - put_fid(pdu, f); - } -} - -static int v9fs_mark_fids_unreclaim(V9fsPDU *pdu, V9fsPath *path) -{ - int err; - V9fsState *s = pdu->s; - V9fsFidState *fidp, head_fid; - - head_fid.next = s->fid_list; - for (fidp = s->fid_list; fidp; fidp = fidp->next) { - if (fidp->path.size != path->size) { - continue; - } - if (!memcmp(fidp->path.data, path->data, path->size)) { - /* Mark the fid non reclaimable. */ - fidp->flags |= FID_NON_RECLAIMABLE; - - /* reopen the file/dir if already closed */ - err = v9fs_reopen_fid(pdu, fidp); - if (err < 0) { - return -1; - } - /* - * Go back to head of fid list because - * the list could have got updated when - * switched to the worker thread - */ - if (err == 0) { - fidp = &head_fid; - } - } - } - return 0; -} - -static void virtfs_reset(V9fsPDU *pdu) -{ - V9fsState *s = pdu->s; - V9fsFidState *fidp = NULL; - - /* Free all fids */ - while (s->fid_list) { - fidp = s->fid_list; - s->fid_list = fidp->next; - - if (fidp->ref) { - fidp->clunked = 1; - } else { - free_fid(pdu, fidp); - } - } - if (fidp) { - /* One or more unclunked fids found... */ - error_report("9pfs:%s: One or more uncluncked fids " - "found during reset", __func__); - } -} - -#define P9_QID_TYPE_DIR 0x80 -#define P9_QID_TYPE_SYMLINK 0x02 - -#define P9_STAT_MODE_DIR 0x80000000 -#define P9_STAT_MODE_APPEND 0x40000000 -#define P9_STAT_MODE_EXCL 0x20000000 -#define P9_STAT_MODE_MOUNT 0x10000000 -#define P9_STAT_MODE_AUTH 0x08000000 -#define P9_STAT_MODE_TMP 0x04000000 -#define P9_STAT_MODE_SYMLINK 0x02000000 -#define P9_STAT_MODE_LINK 0x01000000 -#define P9_STAT_MODE_DEVICE 0x00800000 -#define P9_STAT_MODE_NAMED_PIPE 0x00200000 -#define P9_STAT_MODE_SOCKET 0x00100000 -#define P9_STAT_MODE_SETUID 0x00080000 -#define P9_STAT_MODE_SETGID 0x00040000 -#define P9_STAT_MODE_SETVTX 0x00010000 - -#define P9_STAT_MODE_TYPE_BITS (P9_STAT_MODE_DIR | \ - P9_STAT_MODE_SYMLINK | \ - P9_STAT_MODE_LINK | \ - P9_STAT_MODE_DEVICE | \ - P9_STAT_MODE_NAMED_PIPE | \ - P9_STAT_MODE_SOCKET) - -/* This is the algorithm from ufs in spfs */ -static void stat_to_qid(const struct stat *stbuf, V9fsQID *qidp) -{ - size_t size; - - memset(&qidp->path, 0, sizeof(qidp->path)); - size = MIN(sizeof(stbuf->st_ino), sizeof(qidp->path)); - memcpy(&qidp->path, &stbuf->st_ino, size); - qidp->version = stbuf->st_mtime ^ (stbuf->st_size << 8); - qidp->type = 0; - if (S_ISDIR(stbuf->st_mode)) { - qidp->type |= P9_QID_TYPE_DIR; - } - if (S_ISLNK(stbuf->st_mode)) { - qidp->type |= P9_QID_TYPE_SYMLINK; - } -} - -static int fid_to_qid(V9fsPDU *pdu, V9fsFidState *fidp, V9fsQID *qidp) -{ - struct stat stbuf; - int err; - - err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); - if (err < 0) { - return err; - } - stat_to_qid(&stbuf, qidp); - return 0; -} - -V9fsPDU *pdu_alloc(V9fsState *s) -{ - V9fsPDU *pdu = NULL; - - if (!QLIST_EMPTY(&s->free_list)) { - pdu = QLIST_FIRST(&s->free_list); - QLIST_REMOVE(pdu, next); - QLIST_INSERT_HEAD(&s->active_list, pdu, next); - } - return pdu; -} - -void pdu_free(V9fsPDU *pdu) -{ - if (pdu) { - V9fsState *s = pdu->s; - /* - * Cancelled pdu are added back to the freelist - * by flush request . - */ - if (!pdu->cancelled) { - QLIST_REMOVE(pdu, next); - QLIST_INSERT_HEAD(&s->free_list, pdu, next); - } - } -} - -/* - * We don't do error checking for pdu_marshal/unmarshal here - * because we always expect to have enough space to encode - * error details - */ -static void pdu_complete(V9fsPDU *pdu, ssize_t len) -{ - int8_t id = pdu->id + 1; /* Response */ - V9fsState *s = pdu->s; - - if (len < 0) { - int err = -len; - len = 7; - - if (s->proto_version != V9FS_PROTO_2000L) { - V9fsString str; - - str.data = strerror(err); - str.size = strlen(str.data); - - len += pdu_marshal(pdu, len, "s", &str); - id = P9_RERROR; - } - - len += pdu_marshal(pdu, len, "d", err); - - if (s->proto_version == V9FS_PROTO_2000L) { - id = P9_RLERROR; - } - trace_v9fs_rerror(pdu->tag, pdu->id, err); /* Trace ERROR */ - } - - /* fill out the header */ - pdu_marshal(pdu, 0, "dbw", (int32_t)len, id, pdu->tag); - - /* keep these in sync */ - pdu->size = len; - pdu->id = id; - - pdu_push_and_notify(pdu); - - /* Now wakeup anybody waiting in flush for this request */ - qemu_co_queue_next(&pdu->complete); - - pdu_free(pdu); -} - -static mode_t v9mode_to_mode(uint32_t mode, V9fsString *extension) -{ - mode_t ret; - - ret = mode & 0777; - if (mode & P9_STAT_MODE_DIR) { - ret |= S_IFDIR; - } - - if (mode & P9_STAT_MODE_SYMLINK) { - ret |= S_IFLNK; - } - if (mode & P9_STAT_MODE_SOCKET) { - ret |= S_IFSOCK; - } - if (mode & P9_STAT_MODE_NAMED_PIPE) { - ret |= S_IFIFO; - } - if (mode & P9_STAT_MODE_DEVICE) { - if (extension->size && extension->data[0] == 'c') { - ret |= S_IFCHR; - } else { - ret |= S_IFBLK; - } - } - - if (!(ret&~0777)) { - ret |= S_IFREG; - } - - if (mode & P9_STAT_MODE_SETUID) { - ret |= S_ISUID; - } - if (mode & P9_STAT_MODE_SETGID) { - ret |= S_ISGID; - } - if (mode & P9_STAT_MODE_SETVTX) { - ret |= S_ISVTX; - } - - return ret; -} - -static int donttouch_stat(V9fsStat *stat) -{ - if (stat->type == -1 && - stat->dev == -1 && - stat->qid.type == -1 && - stat->qid.version == -1 && - stat->qid.path == -1 && - stat->mode == -1 && - stat->atime == -1 && - stat->mtime == -1 && - stat->length == -1 && - !stat->name.size && - !stat->uid.size && - !stat->gid.size && - !stat->muid.size && - stat->n_uid == -1 && - stat->n_gid == -1 && - stat->n_muid == -1) { - return 1; - } - - return 0; -} - -static void v9fs_stat_init(V9fsStat *stat) -{ - v9fs_string_init(&stat->name); - v9fs_string_init(&stat->uid); - v9fs_string_init(&stat->gid); - v9fs_string_init(&stat->muid); - v9fs_string_init(&stat->extension); -} - -static void v9fs_stat_free(V9fsStat *stat) -{ - v9fs_string_free(&stat->name); - v9fs_string_free(&stat->uid); - v9fs_string_free(&stat->gid); - v9fs_string_free(&stat->muid); - v9fs_string_free(&stat->extension); -} - -static uint32_t stat_to_v9mode(const struct stat *stbuf) -{ - uint32_t mode; - - mode = stbuf->st_mode & 0777; - if (S_ISDIR(stbuf->st_mode)) { - mode |= P9_STAT_MODE_DIR; - } - - if (S_ISLNK(stbuf->st_mode)) { - mode |= P9_STAT_MODE_SYMLINK; - } - - if (S_ISSOCK(stbuf->st_mode)) { - mode |= P9_STAT_MODE_SOCKET; - } - - if (S_ISFIFO(stbuf->st_mode)) { - mode |= P9_STAT_MODE_NAMED_PIPE; - } - - if (S_ISBLK(stbuf->st_mode) || S_ISCHR(stbuf->st_mode)) { - mode |= P9_STAT_MODE_DEVICE; - } - - if (stbuf->st_mode & S_ISUID) { - mode |= P9_STAT_MODE_SETUID; - } - - if (stbuf->st_mode & S_ISGID) { - mode |= P9_STAT_MODE_SETGID; - } - - if (stbuf->st_mode & S_ISVTX) { - mode |= P9_STAT_MODE_SETVTX; - } - - return mode; -} - -static int stat_to_v9stat(V9fsPDU *pdu, V9fsPath *name, - const struct stat *stbuf, - V9fsStat *v9stat) -{ - int err; - const char *str; - - memset(v9stat, 0, sizeof(*v9stat)); - - stat_to_qid(stbuf, &v9stat->qid); - v9stat->mode = stat_to_v9mode(stbuf); - v9stat->atime = stbuf->st_atime; - v9stat->mtime = stbuf->st_mtime; - v9stat->length = stbuf->st_size; - - v9fs_string_null(&v9stat->uid); - v9fs_string_null(&v9stat->gid); - v9fs_string_null(&v9stat->muid); - - v9stat->n_uid = stbuf->st_uid; - v9stat->n_gid = stbuf->st_gid; - v9stat->n_muid = 0; - - v9fs_string_null(&v9stat->extension); - - if (v9stat->mode & P9_STAT_MODE_SYMLINK) { - err = v9fs_co_readlink(pdu, name, &v9stat->extension); - if (err < 0) { - return err; - } - } else if (v9stat->mode & P9_STAT_MODE_DEVICE) { - v9fs_string_sprintf(&v9stat->extension, "%c %u %u", - S_ISCHR(stbuf->st_mode) ? 'c' : 'b', - major(stbuf->st_rdev), minor(stbuf->st_rdev)); - } else if (S_ISDIR(stbuf->st_mode) || S_ISREG(stbuf->st_mode)) { - v9fs_string_sprintf(&v9stat->extension, "%s %lu", - "HARDLINKCOUNT", (unsigned long)stbuf->st_nlink); - } - - str = strrchr(name->data, '/'); - if (str) { - str += 1; - } else { - str = name->data; - } - - v9fs_string_sprintf(&v9stat->name, "%s", str); - - v9stat->size = 61 + - v9fs_string_size(&v9stat->name) + - v9fs_string_size(&v9stat->uid) + - v9fs_string_size(&v9stat->gid) + - v9fs_string_size(&v9stat->muid) + - v9fs_string_size(&v9stat->extension); - return 0; -} - -#define P9_STATS_MODE 0x00000001ULL -#define P9_STATS_NLINK 0x00000002ULL -#define P9_STATS_UID 0x00000004ULL -#define P9_STATS_GID 0x00000008ULL -#define P9_STATS_RDEV 0x00000010ULL -#define P9_STATS_ATIME 0x00000020ULL -#define P9_STATS_MTIME 0x00000040ULL -#define P9_STATS_CTIME 0x00000080ULL -#define P9_STATS_INO 0x00000100ULL -#define P9_STATS_SIZE 0x00000200ULL -#define P9_STATS_BLOCKS 0x00000400ULL - -#define P9_STATS_BTIME 0x00000800ULL -#define P9_STATS_GEN 0x00001000ULL -#define P9_STATS_DATA_VERSION 0x00002000ULL - -#define P9_STATS_BASIC 0x000007ffULL /* Mask for fields up to BLOCKS */ -#define P9_STATS_ALL 0x00003fffULL /* Mask for All fields above */ - - -static void stat_to_v9stat_dotl(V9fsState *s, const struct stat *stbuf, - V9fsStatDotl *v9lstat) -{ - memset(v9lstat, 0, sizeof(*v9lstat)); - - v9lstat->st_mode = stbuf->st_mode; - v9lstat->st_nlink = stbuf->st_nlink; - v9lstat->st_uid = stbuf->st_uid; - v9lstat->st_gid = stbuf->st_gid; - v9lstat->st_rdev = stbuf->st_rdev; - v9lstat->st_size = stbuf->st_size; - v9lstat->st_blksize = stbuf->st_blksize; - v9lstat->st_blocks = stbuf->st_blocks; - v9lstat->st_atime_sec = stbuf->st_atime; - v9lstat->st_atime_nsec = stbuf->st_atim.tv_nsec; - v9lstat->st_mtime_sec = stbuf->st_mtime; - v9lstat->st_mtime_nsec = stbuf->st_mtim.tv_nsec; - v9lstat->st_ctime_sec = stbuf->st_ctime; - v9lstat->st_ctime_nsec = stbuf->st_ctim.tv_nsec; - /* Currently we only support BASIC fields in stat */ - v9lstat->st_result_mask = P9_STATS_BASIC; - - stat_to_qid(stbuf, &v9lstat->qid); -} - -static void print_sg(struct iovec *sg, int cnt) -{ - int i; - - printf("sg[%d]: {", cnt); - for (i = 0; i < cnt; i++) { - if (i) { - printf(", "); - } - printf("(%p, %zd)", sg[i].iov_base, sg[i].iov_len); - } - printf("}\n"); -} - -/* Will call this only for path name based fid */ -static void v9fs_fix_path(V9fsPath *dst, V9fsPath *src, int len) -{ - V9fsPath str; - v9fs_path_init(&str); - v9fs_path_copy(&str, dst); - v9fs_string_sprintf((V9fsString *)dst, "%s%s", src->data, str.data+len); - v9fs_path_free(&str); - /* +1 to include terminating NULL */ - dst->size++; -} - -static inline bool is_ro_export(FsContext *ctx) -{ - return ctx->export_flags & V9FS_RDONLY; -} - -static void v9fs_version(void *opaque) -{ - ssize_t err; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - V9fsString version; - size_t offset = 7; - - v9fs_string_init(&version); - err = pdu_unmarshal(pdu, offset, "ds", &s->msize, &version); - if (err < 0) { - offset = err; - goto out; - } - trace_v9fs_version(pdu->tag, pdu->id, s->msize, version.data); - - virtfs_reset(pdu); - - if (!strcmp(version.data, "9P2000.u")) { - s->proto_version = V9FS_PROTO_2000U; - } else if (!strcmp(version.data, "9P2000.L")) { - s->proto_version = V9FS_PROTO_2000L; - } else { - v9fs_string_sprintf(&version, "unknown"); - } - - err = pdu_marshal(pdu, offset, "ds", s->msize, &version); - if (err < 0) { - offset = err; - goto out; - } - offset += err; - trace_v9fs_version_return(pdu->tag, pdu->id, s->msize, version.data); -out: - pdu_complete(pdu, offset); - v9fs_string_free(&version); -} - -static void v9fs_attach(void *opaque) -{ - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - int32_t fid, afid, n_uname; - V9fsString uname, aname; - V9fsFidState *fidp; - size_t offset = 7; - V9fsQID qid; - ssize_t err; - - v9fs_string_init(&uname); - v9fs_string_init(&aname); - err = pdu_unmarshal(pdu, offset, "ddssd", &fid, - &afid, &uname, &aname, &n_uname); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_attach(pdu->tag, pdu->id, fid, afid, uname.data, aname.data); - - fidp = alloc_fid(s, fid); - if (fidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - fidp->uid = n_uname; - err = v9fs_co_name_to_path(pdu, NULL, "/", &fidp->path); - if (err < 0) { - err = -EINVAL; - clunk_fid(s, fid); - goto out; - } - err = fid_to_qid(pdu, fidp, &qid); - if (err < 0) { - err = -EINVAL; - clunk_fid(s, fid); - goto out; - } - err = pdu_marshal(pdu, offset, "Q", &qid); - if (err < 0) { - clunk_fid(s, fid); - goto out; - } - err += offset; - trace_v9fs_attach_return(pdu->tag, pdu->id, - qid.type, qid.version, qid.path); - /* - * disable migration if we haven't done already. - * attach could get called multiple times for the same export. - */ - if (!s->migration_blocker) { - s->root_fid = fid; - error_setg(&s->migration_blocker, - "Migration is disabled when VirtFS export path '%s' is mounted in the guest using mount_tag '%s'", - s->ctx.fs_root ? s->ctx.fs_root : "NULL", s->tag); - migrate_add_blocker(s->migration_blocker); - } -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&uname); - v9fs_string_free(&aname); -} - -static void v9fs_stat(void *opaque) -{ - int32_t fid; - V9fsStat v9stat; - ssize_t err = 0; - size_t offset = 7; - struct stat stbuf; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - - err = pdu_unmarshal(pdu, offset, "d", &fid); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_stat(pdu->tag, pdu->id, fid); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); - if (err < 0) { - goto out; - } - err = stat_to_v9stat(pdu, &fidp->path, &stbuf, &v9stat); - if (err < 0) { - goto out; - } - err = pdu_marshal(pdu, offset, "wS", 0, &v9stat); - if (err < 0) { - v9fs_stat_free(&v9stat); - goto out; - } - trace_v9fs_stat_return(pdu->tag, pdu->id, v9stat.mode, - v9stat.atime, v9stat.mtime, v9stat.length); - err += offset; - v9fs_stat_free(&v9stat); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); -} - -static void v9fs_getattr(void *opaque) -{ - int32_t fid; - size_t offset = 7; - ssize_t retval = 0; - struct stat stbuf; - V9fsFidState *fidp; - uint64_t request_mask; - V9fsStatDotl v9stat_dotl; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - retval = pdu_unmarshal(pdu, offset, "dq", &fid, &request_mask); - if (retval < 0) { - goto out_nofid; - } - trace_v9fs_getattr(pdu->tag, pdu->id, fid, request_mask); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - retval = -ENOENT; - goto out_nofid; - } - /* - * Currently we only support BASIC fields in stat, so there is no - * need to look at request_mask. - */ - retval = v9fs_co_lstat(pdu, &fidp->path, &stbuf); - if (retval < 0) { - goto out; - } - stat_to_v9stat_dotl(s, &stbuf, &v9stat_dotl); - - /* fill st_gen if requested and supported by underlying fs */ - if (request_mask & P9_STATS_GEN) { - retval = v9fs_co_st_gen(pdu, &fidp->path, stbuf.st_mode, &v9stat_dotl); - switch (retval) { - case 0: - /* we have valid st_gen: update result mask */ - v9stat_dotl.st_result_mask |= P9_STATS_GEN; - break; - case -EINTR: - /* request cancelled, e.g. by Tflush */ - goto out; - default: - /* failed to get st_gen: not fatal, ignore */ - break; - } - } - retval = pdu_marshal(pdu, offset, "A", &v9stat_dotl); - if (retval < 0) { - goto out; - } - retval += offset; - trace_v9fs_getattr_return(pdu->tag, pdu->id, v9stat_dotl.st_result_mask, - v9stat_dotl.st_mode, v9stat_dotl.st_uid, - v9stat_dotl.st_gid); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, retval); -} - -/* Attribute flags */ -#define P9_ATTR_MODE (1 << 0) -#define P9_ATTR_UID (1 << 1) -#define P9_ATTR_GID (1 << 2) -#define P9_ATTR_SIZE (1 << 3) -#define P9_ATTR_ATIME (1 << 4) -#define P9_ATTR_MTIME (1 << 5) -#define P9_ATTR_CTIME (1 << 6) -#define P9_ATTR_ATIME_SET (1 << 7) -#define P9_ATTR_MTIME_SET (1 << 8) - -#define P9_ATTR_MASK 127 - -static void v9fs_setattr(void *opaque) -{ - int err = 0; - int32_t fid; - V9fsFidState *fidp; - size_t offset = 7; - V9fsIattr v9iattr; - V9fsPDU *pdu = opaque; - - err = pdu_unmarshal(pdu, offset, "dI", &fid, &v9iattr); - if (err < 0) { - goto out_nofid; - } - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - if (v9iattr.valid & P9_ATTR_MODE) { - err = v9fs_co_chmod(pdu, &fidp->path, v9iattr.mode); - if (err < 0) { - goto out; - } - } - if (v9iattr.valid & (P9_ATTR_ATIME | P9_ATTR_MTIME)) { - struct timespec times[2]; - if (v9iattr.valid & P9_ATTR_ATIME) { - if (v9iattr.valid & P9_ATTR_ATIME_SET) { - times[0].tv_sec = v9iattr.atime_sec; - times[0].tv_nsec = v9iattr.atime_nsec; - } else { - times[0].tv_nsec = UTIME_NOW; - } - } else { - times[0].tv_nsec = UTIME_OMIT; - } - if (v9iattr.valid & P9_ATTR_MTIME) { - if (v9iattr.valid & P9_ATTR_MTIME_SET) { - times[1].tv_sec = v9iattr.mtime_sec; - times[1].tv_nsec = v9iattr.mtime_nsec; - } else { - times[1].tv_nsec = UTIME_NOW; - } - } else { - times[1].tv_nsec = UTIME_OMIT; - } - err = v9fs_co_utimensat(pdu, &fidp->path, times); - if (err < 0) { - goto out; - } - } - /* - * If the only valid entry in iattr is ctime we can call - * chown(-1,-1) to update the ctime of the file - */ - if ((v9iattr.valid & (P9_ATTR_UID | P9_ATTR_GID)) || - ((v9iattr.valid & P9_ATTR_CTIME) - && !((v9iattr.valid & P9_ATTR_MASK) & ~P9_ATTR_CTIME))) { - if (!(v9iattr.valid & P9_ATTR_UID)) { - v9iattr.uid = -1; - } - if (!(v9iattr.valid & P9_ATTR_GID)) { - v9iattr.gid = -1; - } - err = v9fs_co_chown(pdu, &fidp->path, v9iattr.uid, - v9iattr.gid); - if (err < 0) { - goto out; - } - } - if (v9iattr.valid & (P9_ATTR_SIZE)) { - err = v9fs_co_truncate(pdu, &fidp->path, v9iattr.size); - if (err < 0) { - goto out; - } - } - err = offset; -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); -} - -static int v9fs_walk_marshal(V9fsPDU *pdu, uint16_t nwnames, V9fsQID *qids) -{ - int i; - ssize_t err; - size_t offset = 7; - - err = pdu_marshal(pdu, offset, "w", nwnames); - if (err < 0) { - return err; - } - offset += err; - for (i = 0; i < nwnames; i++) { - err = pdu_marshal(pdu, offset, "Q", &qids[i]); - if (err < 0) { - return err; - } - offset += err; - } - return offset; -} - -static void v9fs_walk(void *opaque) -{ - int name_idx; - V9fsQID *qids = NULL; - int i, err = 0; - V9fsPath dpath, path; - uint16_t nwnames; - struct stat stbuf; - size_t offset = 7; - int32_t fid, newfid; - V9fsString *wnames = NULL; - V9fsFidState *fidp; - V9fsFidState *newfidp = NULL; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - err = pdu_unmarshal(pdu, offset, "ddw", &fid, &newfid, &nwnames); - if (err < 0) { - pdu_complete(pdu, err); - return ; - } - offset += err; - - trace_v9fs_walk(pdu->tag, pdu->id, fid, newfid, nwnames); - - if (nwnames && nwnames <= P9_MAXWELEM) { - wnames = g_malloc0(sizeof(wnames[0]) * nwnames); - qids = g_malloc0(sizeof(qids[0]) * nwnames); - for (i = 0; i < nwnames; i++) { - err = pdu_unmarshal(pdu, offset, "s", &wnames[i]); - if (err < 0) { - goto out_nofid; - } - offset += err; - } - } else if (nwnames > P9_MAXWELEM) { - err = -EINVAL; - goto out_nofid; - } - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - v9fs_path_init(&dpath); - v9fs_path_init(&path); - /* - * Both dpath and path initially poin to fidp. - * Needed to handle request with nwnames == 0 - */ - v9fs_path_copy(&dpath, &fidp->path); - v9fs_path_copy(&path, &fidp->path); - for (name_idx = 0; name_idx < nwnames; name_idx++) { - err = v9fs_co_name_to_path(pdu, &dpath, wnames[name_idx].data, &path); - if (err < 0) { - goto out; - } - err = v9fs_co_lstat(pdu, &path, &stbuf); - if (err < 0) { - goto out; - } - stat_to_qid(&stbuf, &qids[name_idx]); - v9fs_path_copy(&dpath, &path); - } - if (fid == newfid) { - BUG_ON(fidp->fid_type != P9_FID_NONE); - v9fs_path_copy(&fidp->path, &path); - } else { - newfidp = alloc_fid(s, newfid); - if (newfidp == NULL) { - err = -EINVAL; - goto out; - } - newfidp->uid = fidp->uid; - v9fs_path_copy(&newfidp->path, &path); - } - err = v9fs_walk_marshal(pdu, nwnames, qids); - trace_v9fs_walk_return(pdu->tag, pdu->id, nwnames, qids); -out: - put_fid(pdu, fidp); - if (newfidp) { - put_fid(pdu, newfidp); - } - v9fs_path_free(&dpath); - v9fs_path_free(&path); -out_nofid: - pdu_complete(pdu, err); - if (nwnames && nwnames <= P9_MAXWELEM) { - for (name_idx = 0; name_idx < nwnames; name_idx++) { - v9fs_string_free(&wnames[name_idx]); - } - g_free(wnames); - g_free(qids); - } -} - -static int32_t get_iounit(V9fsPDU *pdu, V9fsPath *path) -{ - struct statfs stbuf; - int32_t iounit = 0; - V9fsState *s = pdu->s; - - /* - * iounit should be multiples of f_bsize (host filesystem block size - * and as well as less than (client msize - P9_IOHDRSZ)) - */ - if (!v9fs_co_statfs(pdu, path, &stbuf)) { - iounit = stbuf.f_bsize; - iounit *= (s->msize - P9_IOHDRSZ)/stbuf.f_bsize; - } - if (!iounit) { - iounit = s->msize - P9_IOHDRSZ; - } - return iounit; -} - -static void v9fs_open(void *opaque) -{ - int flags; - int32_t fid; - int32_t mode; - V9fsQID qid; - int iounit = 0; - ssize_t err = 0; - size_t offset = 7; - struct stat stbuf; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - if (s->proto_version == V9FS_PROTO_2000L) { - err = pdu_unmarshal(pdu, offset, "dd", &fid, &mode); - } else { - uint8_t modebyte; - err = pdu_unmarshal(pdu, offset, "db", &fid, &modebyte); - mode = modebyte; - } - if (err < 0) { - goto out_nofid; - } - trace_v9fs_open(pdu->tag, pdu->id, fid, mode); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - BUG_ON(fidp->fid_type != P9_FID_NONE); - - err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); - if (err < 0) { - goto out; - } - stat_to_qid(&stbuf, &qid); - if (S_ISDIR(stbuf.st_mode)) { - err = v9fs_co_opendir(pdu, fidp); - if (err < 0) { - goto out; - } - fidp->fid_type = P9_FID_DIR; - err = pdu_marshal(pdu, offset, "Qd", &qid, 0); - if (err < 0) { - goto out; - } - err += offset; - } else { - if (s->proto_version == V9FS_PROTO_2000L) { - flags = get_dotl_openflags(s, mode); - } else { - flags = omode_to_uflags(mode); - } - if (is_ro_export(&s->ctx)) { - if (mode & O_WRONLY || mode & O_RDWR || - mode & O_APPEND || mode & O_TRUNC) { - err = -EROFS; - goto out; - } - } - err = v9fs_co_open(pdu, fidp, flags); - if (err < 0) { - goto out; - } - fidp->fid_type = P9_FID_FILE; - fidp->open_flags = flags; - if (flags & O_EXCL) { - /* - * We let the host file system do O_EXCL check - * We should not reclaim such fd - */ - fidp->flags |= FID_NON_RECLAIMABLE; - } - iounit = get_iounit(pdu, &fidp->path); - err = pdu_marshal(pdu, offset, "Qd", &qid, iounit); - if (err < 0) { - goto out; - } - err += offset; - } - trace_v9fs_open_return(pdu->tag, pdu->id, - qid.type, qid.version, qid.path, iounit); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); -} - -static void v9fs_lcreate(void *opaque) -{ - int32_t dfid, flags, mode; - gid_t gid; - ssize_t err = 0; - ssize_t offset = 7; - V9fsString name; - V9fsFidState *fidp; - struct stat stbuf; - V9fsQID qid; - int32_t iounit; - V9fsPDU *pdu = opaque; - - v9fs_string_init(&name); - err = pdu_unmarshal(pdu, offset, "dsddd", &dfid, - &name, &flags, &mode, &gid); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_lcreate(pdu->tag, pdu->id, dfid, flags, mode, gid); - - fidp = get_fid(pdu, dfid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - - flags = get_dotl_openflags(pdu->s, flags); - err = v9fs_co_open2(pdu, fidp, &name, gid, - flags | O_CREAT, mode, &stbuf); - if (err < 0) { - goto out; - } - fidp->fid_type = P9_FID_FILE; - fidp->open_flags = flags; - if (flags & O_EXCL) { - /* - * We let the host file system do O_EXCL check - * We should not reclaim such fd - */ - fidp->flags |= FID_NON_RECLAIMABLE; - } - iounit = get_iounit(pdu, &fidp->path); - stat_to_qid(&stbuf, &qid); - err = pdu_marshal(pdu, offset, "Qd", &qid, iounit); - if (err < 0) { - goto out; - } - err += offset; - trace_v9fs_lcreate_return(pdu->tag, pdu->id, - qid.type, qid.version, qid.path, iounit); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); -} - -static void v9fs_fsync(void *opaque) -{ - int err; - int32_t fid; - int datasync; - size_t offset = 7; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - - err = pdu_unmarshal(pdu, offset, "dd", &fid, &datasync); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_fsync(pdu->tag, pdu->id, fid, datasync); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - err = v9fs_co_fsync(pdu, fidp, datasync); - if (!err) { - err = offset; - } - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); -} - -static void v9fs_clunk(void *opaque) -{ - int err; - int32_t fid; - size_t offset = 7; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - err = pdu_unmarshal(pdu, offset, "d", &fid); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_clunk(pdu->tag, pdu->id, fid); - - fidp = clunk_fid(s, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - /* - * Bump the ref so that put_fid will - * free the fid. - */ - fidp->ref++; - err = put_fid(pdu, fidp); - if (!err) { - err = offset; - } -out_nofid: - pdu_complete(pdu, err); -} - -static int v9fs_xattr_read(V9fsState *s, V9fsPDU *pdu, V9fsFidState *fidp, - uint64_t off, uint32_t max_count) -{ - ssize_t err; - size_t offset = 7; - int read_count; - int64_t xattr_len; - V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); - VirtQueueElement *elem = v->elems[pdu->idx]; - - xattr_len = fidp->fs.xattr.len; - read_count = xattr_len - off; - if (read_count > max_count) { - read_count = max_count; - } else if (read_count < 0) { - /* - * read beyond XATTR value - */ - read_count = 0; - } - err = pdu_marshal(pdu, offset, "d", read_count); - if (err < 0) { - return err; - } - offset += err; - - err = v9fs_pack(elem->in_sg, elem->in_num, offset, - ((char *)fidp->fs.xattr.value) + off, - read_count); - if (err < 0) { - return err; - } - offset += err; - return offset; -} - -static int v9fs_do_readdir_with_stat(V9fsPDU *pdu, - V9fsFidState *fidp, uint32_t max_count) -{ - V9fsPath path; - V9fsStat v9stat; - int len, err = 0; - int32_t count = 0; - struct stat stbuf; - off_t saved_dir_pos; - struct dirent *dent, *result; - - /* save the directory position */ - saved_dir_pos = v9fs_co_telldir(pdu, fidp); - if (saved_dir_pos < 0) { - return saved_dir_pos; - } - - dent = g_malloc(sizeof(struct dirent)); - - while (1) { - v9fs_path_init(&path); - err = v9fs_co_readdir_r(pdu, fidp, dent, &result); - if (err || !result) { - break; - } - err = v9fs_co_name_to_path(pdu, &fidp->path, dent->d_name, &path); - if (err < 0) { - goto out; - } - err = v9fs_co_lstat(pdu, &path, &stbuf); - if (err < 0) { - goto out; - } - err = stat_to_v9stat(pdu, &path, &stbuf, &v9stat); - if (err < 0) { - goto out; - } - /* 11 = 7 + 4 (7 = start offset, 4 = space for storing count) */ - len = pdu_marshal(pdu, 11 + count, "S", &v9stat); - if ((len != (v9stat.size + 2)) || ((count + len) > max_count)) { - /* Ran out of buffer. Set dir back to old position and return */ - v9fs_co_seekdir(pdu, fidp, saved_dir_pos); - v9fs_stat_free(&v9stat); - v9fs_path_free(&path); - g_free(dent); - return count; - } - count += len; - v9fs_stat_free(&v9stat); - v9fs_path_free(&path); - saved_dir_pos = dent->d_off; - } -out: - g_free(dent); - v9fs_path_free(&path); - if (err < 0) { - return err; - } - return count; -} - -/* - * Create a QEMUIOVector for a sub-region of PDU iovecs - * - * @qiov: uninitialized QEMUIOVector - * @skip: number of bytes to skip from beginning of PDU - * @size: number of bytes to include - * @is_write: true - write, false - read - * - * The resulting QEMUIOVector has heap-allocated iovecs and must be cleaned up - * with qemu_iovec_destroy(). - */ -static void v9fs_init_qiov_from_pdu(QEMUIOVector *qiov, V9fsPDU *pdu, - size_t skip, size_t size, - bool is_write) -{ - QEMUIOVector elem; - struct iovec *iov; - unsigned int niov; - - virtio_init_iov_from_pdu(pdu, &iov, &niov, is_write); - - qemu_iovec_init_external(&elem, iov, niov); - qemu_iovec_init(qiov, niov); - qemu_iovec_concat(qiov, &elem, skip, size); -} - -static void v9fs_read(void *opaque) -{ - int32_t fid; - uint64_t off; - ssize_t err = 0; - int32_t count = 0; - size_t offset = 7; - uint32_t max_count; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - err = pdu_unmarshal(pdu, offset, "dqd", &fid, &off, &max_count); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_read(pdu->tag, pdu->id, fid, off, max_count); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - if (fidp->fid_type == P9_FID_DIR) { - - if (off == 0) { - v9fs_co_rewinddir(pdu, fidp); - } - count = v9fs_do_readdir_with_stat(pdu, fidp, max_count); - if (count < 0) { - err = count; - goto out; - } - err = pdu_marshal(pdu, offset, "d", count); - if (err < 0) { - goto out; - } - err += offset + count; - } else if (fidp->fid_type == P9_FID_FILE) { - QEMUIOVector qiov_full; - QEMUIOVector qiov; - int32_t len; - - v9fs_init_qiov_from_pdu(&qiov_full, pdu, offset + 4, max_count, false); - qemu_iovec_init(&qiov, qiov_full.niov); - do { - qemu_iovec_reset(&qiov); - qemu_iovec_concat(&qiov, &qiov_full, count, qiov_full.size - count); - if (0) { - print_sg(qiov.iov, qiov.niov); - } - /* Loop in case of EINTR */ - do { - len = v9fs_co_preadv(pdu, fidp, qiov.iov, qiov.niov, off); - if (len >= 0) { - off += len; - count += len; - } - } while (len == -EINTR && !pdu->cancelled); - if (len < 0) { - /* IO error return the error */ - err = len; - goto out; - } - } while (count < max_count && len > 0); - err = pdu_marshal(pdu, offset, "d", count); - if (err < 0) { - goto out; - } - err += offset + count; - qemu_iovec_destroy(&qiov); - qemu_iovec_destroy(&qiov_full); - } else if (fidp->fid_type == P9_FID_XATTR) { - err = v9fs_xattr_read(s, pdu, fidp, off, max_count); - } else { - err = -EINVAL; - } - trace_v9fs_read_return(pdu->tag, pdu->id, count, err); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); -} - -static size_t v9fs_readdir_data_size(V9fsString *name) -{ - /* - * Size of each dirent on the wire: size of qid (13) + size of offset (8) - * size of type (1) + size of name.size (2) + strlen(name.data) - */ - return 24 + v9fs_string_size(name); -} - -static int v9fs_do_readdir(V9fsPDU *pdu, - V9fsFidState *fidp, int32_t max_count) -{ - size_t size; - V9fsQID qid; - V9fsString name; - int len, err = 0; - int32_t count = 0; - off_t saved_dir_pos; - struct dirent *dent, *result; - - /* save the directory position */ - saved_dir_pos = v9fs_co_telldir(pdu, fidp); - if (saved_dir_pos < 0) { - return saved_dir_pos; - } - - dent = g_malloc(sizeof(struct dirent)); - - while (1) { - err = v9fs_co_readdir_r(pdu, fidp, dent, &result); - if (err || !result) { - break; - } - v9fs_string_init(&name); - v9fs_string_sprintf(&name, "%s", dent->d_name); - if ((count + v9fs_readdir_data_size(&name)) > max_count) { - /* Ran out of buffer. Set dir back to old position and return */ - v9fs_co_seekdir(pdu, fidp, saved_dir_pos); - v9fs_string_free(&name); - g_free(dent); - return count; - } - /* - * Fill up just the path field of qid because the client uses - * only that. To fill the entire qid structure we will have - * to stat each dirent found, which is expensive - */ - size = MIN(sizeof(dent->d_ino), sizeof(qid.path)); - memcpy(&qid.path, &dent->d_ino, size); - /* Fill the other fields with dummy values */ - qid.type = 0; - qid.version = 0; - - /* 11 = 7 + 4 (7 = start offset, 4 = space for storing count) */ - len = pdu_marshal(pdu, 11 + count, "Qqbs", - &qid, dent->d_off, - dent->d_type, &name); - if (len < 0) { - v9fs_co_seekdir(pdu, fidp, saved_dir_pos); - v9fs_string_free(&name); - g_free(dent); - return len; - } - count += len; - v9fs_string_free(&name); - saved_dir_pos = dent->d_off; - } - g_free(dent); - if (err < 0) { - return err; - } - return count; -} - -static void v9fs_readdir(void *opaque) -{ - int32_t fid; - V9fsFidState *fidp; - ssize_t retval = 0; - size_t offset = 7; - uint64_t initial_offset; - int32_t count; - uint32_t max_count; - V9fsPDU *pdu = opaque; - - retval = pdu_unmarshal(pdu, offset, "dqd", &fid, - &initial_offset, &max_count); - if (retval < 0) { - goto out_nofid; - } - trace_v9fs_readdir(pdu->tag, pdu->id, fid, initial_offset, max_count); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - retval = -EINVAL; - goto out_nofid; - } - if (!fidp->fs.dir) { - retval = -EINVAL; - goto out; - } - if (initial_offset == 0) { - v9fs_co_rewinddir(pdu, fidp); - } else { - v9fs_co_seekdir(pdu, fidp, initial_offset); - } - count = v9fs_do_readdir(pdu, fidp, max_count); - if (count < 0) { - retval = count; - goto out; - } - retval = pdu_marshal(pdu, offset, "d", count); - if (retval < 0) { - goto out; - } - retval += count + offset; - trace_v9fs_readdir_return(pdu->tag, pdu->id, count, retval); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, retval); -} - -static int v9fs_xattr_write(V9fsState *s, V9fsPDU *pdu, V9fsFidState *fidp, - uint64_t off, uint32_t count, - struct iovec *sg, int cnt) -{ - int i, to_copy; - ssize_t err = 0; - int write_count; - int64_t xattr_len; - size_t offset = 7; - - - xattr_len = fidp->fs.xattr.len; - write_count = xattr_len - off; - if (write_count > count) { - write_count = count; - } else if (write_count < 0) { - /* - * write beyond XATTR value len specified in - * xattrcreate - */ - err = -ENOSPC; - goto out; - } - err = pdu_marshal(pdu, offset, "d", write_count); - if (err < 0) { - return err; - } - err += offset; - fidp->fs.xattr.copied_len += write_count; - /* - * Now copy the content from sg list - */ - for (i = 0; i < cnt; i++) { - if (write_count > sg[i].iov_len) { - to_copy = sg[i].iov_len; - } else { - to_copy = write_count; - } - memcpy((char *)fidp->fs.xattr.value + off, sg[i].iov_base, to_copy); - /* updating vs->off since we are not using below */ - off += to_copy; - write_count -= to_copy; - } -out: - return err; -} - -static void v9fs_write(void *opaque) -{ - ssize_t err; - int32_t fid; - uint64_t off; - uint32_t count; - int32_t len = 0; - int32_t total = 0; - size_t offset = 7; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - QEMUIOVector qiov_full; - QEMUIOVector qiov; - - err = pdu_unmarshal(pdu, offset, "dqd", &fid, &off, &count); - if (err < 0) { - pdu_complete(pdu, err); - return; - } - offset += err; - v9fs_init_qiov_from_pdu(&qiov_full, pdu, offset, count, true); - trace_v9fs_write(pdu->tag, pdu->id, fid, off, count, qiov_full.niov); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - if (fidp->fid_type == P9_FID_FILE) { - if (fidp->fs.fd == -1) { - err = -EINVAL; - goto out; - } - } else if (fidp->fid_type == P9_FID_XATTR) { - /* - * setxattr operation - */ - err = v9fs_xattr_write(s, pdu, fidp, off, count, - qiov_full.iov, qiov_full.niov); - goto out; - } else { - err = -EINVAL; - goto out; - } - qemu_iovec_init(&qiov, qiov_full.niov); - do { - qemu_iovec_reset(&qiov); - qemu_iovec_concat(&qiov, &qiov_full, total, qiov_full.size - total); - if (0) { - print_sg(qiov.iov, qiov.niov); - } - /* Loop in case of EINTR */ - do { - len = v9fs_co_pwritev(pdu, fidp, qiov.iov, qiov.niov, off); - if (len >= 0) { - off += len; - total += len; - } - } while (len == -EINTR && !pdu->cancelled); - if (len < 0) { - /* IO error return the error */ - err = len; - goto out_qiov; - } - } while (total < count && len > 0); - - offset = 7; - err = pdu_marshal(pdu, offset, "d", total); - if (err < 0) { - goto out; - } - err += offset; - trace_v9fs_write_return(pdu->tag, pdu->id, total, err); -out_qiov: - qemu_iovec_destroy(&qiov); -out: - put_fid(pdu, fidp); -out_nofid: - qemu_iovec_destroy(&qiov_full); - pdu_complete(pdu, err); -} - -static void v9fs_create(void *opaque) -{ - int32_t fid; - int err = 0; - size_t offset = 7; - V9fsFidState *fidp; - V9fsQID qid; - int32_t perm; - int8_t mode; - V9fsPath path; - struct stat stbuf; - V9fsString name; - V9fsString extension; - int iounit; - V9fsPDU *pdu = opaque; - - v9fs_path_init(&path); - v9fs_string_init(&name); - v9fs_string_init(&extension); - err = pdu_unmarshal(pdu, offset, "dsdbs", &fid, &name, - &perm, &mode, &extension); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_create(pdu->tag, pdu->id, fid, name.data, perm, mode); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - if (perm & P9_STAT_MODE_DIR) { - err = v9fs_co_mkdir(pdu, fidp, &name, perm & 0777, - fidp->uid, -1, &stbuf); - if (err < 0) { - goto out; - } - err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); - if (err < 0) { - goto out; - } - v9fs_path_copy(&fidp->path, &path); - err = v9fs_co_opendir(pdu, fidp); - if (err < 0) { - goto out; - } - fidp->fid_type = P9_FID_DIR; - } else if (perm & P9_STAT_MODE_SYMLINK) { - err = v9fs_co_symlink(pdu, fidp, &name, - extension.data, -1 , &stbuf); - if (err < 0) { - goto out; - } - err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); - if (err < 0) { - goto out; - } - v9fs_path_copy(&fidp->path, &path); - } else if (perm & P9_STAT_MODE_LINK) { - int32_t ofid = atoi(extension.data); - V9fsFidState *ofidp = get_fid(pdu, ofid); - if (ofidp == NULL) { - err = -EINVAL; - goto out; - } - err = v9fs_co_link(pdu, ofidp, fidp, &name); - put_fid(pdu, ofidp); - if (err < 0) { - goto out; - } - err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); - if (err < 0) { - fidp->fid_type = P9_FID_NONE; - goto out; - } - v9fs_path_copy(&fidp->path, &path); - err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); - if (err < 0) { - fidp->fid_type = P9_FID_NONE; - goto out; - } - } else if (perm & P9_STAT_MODE_DEVICE) { - char ctype; - uint32_t major, minor; - mode_t nmode = 0; - - if (sscanf(extension.data, "%c %u %u", &ctype, &major, &minor) != 3) { - err = -errno; - goto out; - } - - switch (ctype) { - case 'c': - nmode = S_IFCHR; - break; - case 'b': - nmode = S_IFBLK; - break; - default: - err = -EIO; - goto out; - } - - nmode |= perm & 0777; - err = v9fs_co_mknod(pdu, fidp, &name, fidp->uid, -1, - makedev(major, minor), nmode, &stbuf); - if (err < 0) { - goto out; - } - err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); - if (err < 0) { - goto out; - } - v9fs_path_copy(&fidp->path, &path); - } else if (perm & P9_STAT_MODE_NAMED_PIPE) { - err = v9fs_co_mknod(pdu, fidp, &name, fidp->uid, -1, - 0, S_IFIFO | (perm & 0777), &stbuf); - if (err < 0) { - goto out; - } - err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); - if (err < 0) { - goto out; - } - v9fs_path_copy(&fidp->path, &path); - } else if (perm & P9_STAT_MODE_SOCKET) { - err = v9fs_co_mknod(pdu, fidp, &name, fidp->uid, -1, - 0, S_IFSOCK | (perm & 0777), &stbuf); - if (err < 0) { - goto out; - } - err = v9fs_co_name_to_path(pdu, &fidp->path, name.data, &path); - if (err < 0) { - goto out; - } - v9fs_path_copy(&fidp->path, &path); - } else { - err = v9fs_co_open2(pdu, fidp, &name, -1, - omode_to_uflags(mode)|O_CREAT, perm, &stbuf); - if (err < 0) { - goto out; - } - fidp->fid_type = P9_FID_FILE; - fidp->open_flags = omode_to_uflags(mode); - if (fidp->open_flags & O_EXCL) { - /* - * We let the host file system do O_EXCL check - * We should not reclaim such fd - */ - fidp->flags |= FID_NON_RECLAIMABLE; - } - } - iounit = get_iounit(pdu, &fidp->path); - stat_to_qid(&stbuf, &qid); - err = pdu_marshal(pdu, offset, "Qd", &qid, iounit); - if (err < 0) { - goto out; - } - err += offset; - trace_v9fs_create_return(pdu->tag, pdu->id, - qid.type, qid.version, qid.path, iounit); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); - v9fs_string_free(&extension); - v9fs_path_free(&path); -} - -static void v9fs_symlink(void *opaque) -{ - V9fsPDU *pdu = opaque; - V9fsString name; - V9fsString symname; - V9fsFidState *dfidp; - V9fsQID qid; - struct stat stbuf; - int32_t dfid; - int err = 0; - gid_t gid; - size_t offset = 7; - - v9fs_string_init(&name); - v9fs_string_init(&symname); - err = pdu_unmarshal(pdu, offset, "dssd", &dfid, &name, &symname, &gid); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_symlink(pdu->tag, pdu->id, dfid, name.data, symname.data, gid); - - dfidp = get_fid(pdu, dfid); - if (dfidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - err = v9fs_co_symlink(pdu, dfidp, &name, symname.data, gid, &stbuf); - if (err < 0) { - goto out; - } - stat_to_qid(&stbuf, &qid); - err = pdu_marshal(pdu, offset, "Q", &qid); - if (err < 0) { - goto out; - } - err += offset; - trace_v9fs_symlink_return(pdu->tag, pdu->id, - qid.type, qid.version, qid.path); -out: - put_fid(pdu, dfidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); - v9fs_string_free(&symname); -} - -static void v9fs_flush(void *opaque) -{ - ssize_t err; - int16_t tag; - size_t offset = 7; - V9fsPDU *cancel_pdu; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - err = pdu_unmarshal(pdu, offset, "w", &tag); - if (err < 0) { - pdu_complete(pdu, err); - return; - } - trace_v9fs_flush(pdu->tag, pdu->id, tag); - - QLIST_FOREACH(cancel_pdu, &s->active_list, next) { - if (cancel_pdu->tag == tag) { - break; - } - } - if (cancel_pdu) { - cancel_pdu->cancelled = 1; - /* - * Wait for pdu to complete. - */ - qemu_co_queue_wait(&cancel_pdu->complete); - cancel_pdu->cancelled = 0; - pdu_free(cancel_pdu); - } - pdu_complete(pdu, 7); -} - -static void v9fs_link(void *opaque) -{ - V9fsPDU *pdu = opaque; - int32_t dfid, oldfid; - V9fsFidState *dfidp, *oldfidp; - V9fsString name; - size_t offset = 7; - int err = 0; - - v9fs_string_init(&name); - err = pdu_unmarshal(pdu, offset, "dds", &dfid, &oldfid, &name); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_link(pdu->tag, pdu->id, dfid, oldfid, name.data); - - dfidp = get_fid(pdu, dfid); - if (dfidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - - oldfidp = get_fid(pdu, oldfid); - if (oldfidp == NULL) { - err = -ENOENT; - goto out; - } - err = v9fs_co_link(pdu, oldfidp, dfidp, &name); - if (!err) { - err = offset; - } -out: - put_fid(pdu, dfidp); -out_nofid: - v9fs_string_free(&name); - pdu_complete(pdu, err); -} - -/* Only works with path name based fid */ -static void v9fs_remove(void *opaque) -{ - int32_t fid; - int err = 0; - size_t offset = 7; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - - err = pdu_unmarshal(pdu, offset, "d", &fid); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_remove(pdu->tag, pdu->id, fid); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - /* if fs driver is not path based, return EOPNOTSUPP */ - if (!(pdu->s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT)) { - err = -EOPNOTSUPP; - goto out_err; - } - /* - * IF the file is unlinked, we cannot reopen - * the file later. So don't reclaim fd - */ - err = v9fs_mark_fids_unreclaim(pdu, &fidp->path); - if (err < 0) { - goto out_err; - } - err = v9fs_co_remove(pdu, &fidp->path); - if (!err) { - err = offset; - } -out_err: - /* For TREMOVE we need to clunk the fid even on failed remove */ - clunk_fid(pdu->s, fidp->fid); - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); -} - -static void v9fs_unlinkat(void *opaque) -{ - int err = 0; - V9fsString name; - int32_t dfid, flags; - size_t offset = 7; - V9fsPath path; - V9fsFidState *dfidp; - V9fsPDU *pdu = opaque; - - v9fs_string_init(&name); - err = pdu_unmarshal(pdu, offset, "dsd", &dfid, &name, &flags); - if (err < 0) { - goto out_nofid; - } - dfidp = get_fid(pdu, dfid); - if (dfidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - /* - * IF the file is unlinked, we cannot reopen - * the file later. So don't reclaim fd - */ - v9fs_path_init(&path); - err = v9fs_co_name_to_path(pdu, &dfidp->path, name.data, &path); - if (err < 0) { - goto out_err; - } - err = v9fs_mark_fids_unreclaim(pdu, &path); - if (err < 0) { - goto out_err; - } - err = v9fs_co_unlinkat(pdu, &dfidp->path, &name, flags); - if (!err) { - err = offset; - } -out_err: - put_fid(pdu, dfidp); - v9fs_path_free(&path); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); -} - - -/* Only works with path name based fid */ -static int v9fs_complete_rename(V9fsPDU *pdu, V9fsFidState *fidp, - int32_t newdirfid, V9fsString *name) -{ - char *end; - int err = 0; - V9fsPath new_path; - V9fsFidState *tfidp; - V9fsState *s = pdu->s; - V9fsFidState *dirfidp = NULL; - char *old_name, *new_name; - - v9fs_path_init(&new_path); - if (newdirfid != -1) { - dirfidp = get_fid(pdu, newdirfid); - if (dirfidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - BUG_ON(dirfidp->fid_type != P9_FID_NONE); - v9fs_co_name_to_path(pdu, &dirfidp->path, name->data, &new_path); - } else { - old_name = fidp->path.data; - end = strrchr(old_name, '/'); - if (end) { - end++; - } else { - end = old_name; - } - new_name = g_malloc0(end - old_name + name->size + 1); - strncat(new_name, old_name, end - old_name); - strncat(new_name + (end - old_name), name->data, name->size); - v9fs_co_name_to_path(pdu, NULL, new_name, &new_path); - g_free(new_name); - } - err = v9fs_co_rename(pdu, &fidp->path, &new_path); - if (err < 0) { - goto out; - } - /* - * Fixup fid's pointing to the old name to - * start pointing to the new name - */ - for (tfidp = s->fid_list; tfidp; tfidp = tfidp->next) { - if (v9fs_path_is_ancestor(&fidp->path, &tfidp->path)) { - /* replace the name */ - v9fs_fix_path(&tfidp->path, &new_path, strlen(fidp->path.data)); - } - } -out: - if (dirfidp) { - put_fid(pdu, dirfidp); - } - v9fs_path_free(&new_path); -out_nofid: - return err; -} - -/* Only works with path name based fid */ -static void v9fs_rename(void *opaque) -{ - int32_t fid; - ssize_t err = 0; - size_t offset = 7; - V9fsString name; - int32_t newdirfid; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - v9fs_string_init(&name); - err = pdu_unmarshal(pdu, offset, "dds", &fid, &newdirfid, &name); - if (err < 0) { - goto out_nofid; - } - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - BUG_ON(fidp->fid_type != P9_FID_NONE); - /* if fs driver is not path based, return EOPNOTSUPP */ - if (!(pdu->s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT)) { - err = -EOPNOTSUPP; - goto out; - } - v9fs_path_write_lock(s); - err = v9fs_complete_rename(pdu, fidp, newdirfid, &name); - v9fs_path_unlock(s); - if (!err) { - err = offset; - } -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); -} - -static void v9fs_fix_fid_paths(V9fsPDU *pdu, V9fsPath *olddir, - V9fsString *old_name, V9fsPath *newdir, - V9fsString *new_name) -{ - V9fsFidState *tfidp; - V9fsPath oldpath, newpath; - V9fsState *s = pdu->s; - - - v9fs_path_init(&oldpath); - v9fs_path_init(&newpath); - v9fs_co_name_to_path(pdu, olddir, old_name->data, &oldpath); - v9fs_co_name_to_path(pdu, newdir, new_name->data, &newpath); - - /* - * Fixup fid's pointing to the old name to - * start pointing to the new name - */ - for (tfidp = s->fid_list; tfidp; tfidp = tfidp->next) { - if (v9fs_path_is_ancestor(&oldpath, &tfidp->path)) { - /* replace the name */ - v9fs_fix_path(&tfidp->path, &newpath, strlen(oldpath.data)); - } - } - v9fs_path_free(&oldpath); - v9fs_path_free(&newpath); -} - -static int v9fs_complete_renameat(V9fsPDU *pdu, int32_t olddirfid, - V9fsString *old_name, int32_t newdirfid, - V9fsString *new_name) -{ - int err = 0; - V9fsState *s = pdu->s; - V9fsFidState *newdirfidp = NULL, *olddirfidp = NULL; - - olddirfidp = get_fid(pdu, olddirfid); - if (olddirfidp == NULL) { - err = -ENOENT; - goto out; - } - if (newdirfid != -1) { - newdirfidp = get_fid(pdu, newdirfid); - if (newdirfidp == NULL) { - err = -ENOENT; - goto out; - } - } else { - newdirfidp = get_fid(pdu, olddirfid); - } - - err = v9fs_co_renameat(pdu, &olddirfidp->path, old_name, - &newdirfidp->path, new_name); - if (err < 0) { - goto out; - } - if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) { - /* Only for path based fid we need to do the below fixup */ - v9fs_fix_fid_paths(pdu, &olddirfidp->path, old_name, - &newdirfidp->path, new_name); - } -out: - if (olddirfidp) { - put_fid(pdu, olddirfidp); - } - if (newdirfidp) { - put_fid(pdu, newdirfidp); - } - return err; -} - -static void v9fs_renameat(void *opaque) -{ - ssize_t err = 0; - size_t offset = 7; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - int32_t olddirfid, newdirfid; - V9fsString old_name, new_name; - - v9fs_string_init(&old_name); - v9fs_string_init(&new_name); - err = pdu_unmarshal(pdu, offset, "dsds", &olddirfid, - &old_name, &newdirfid, &new_name); - if (err < 0) { - goto out_err; - } - - v9fs_path_write_lock(s); - err = v9fs_complete_renameat(pdu, olddirfid, - &old_name, newdirfid, &new_name); - v9fs_path_unlock(s); - if (!err) { - err = offset; - } - -out_err: - pdu_complete(pdu, err); - v9fs_string_free(&old_name); - v9fs_string_free(&new_name); -} - -static void v9fs_wstat(void *opaque) -{ - int32_t fid; - int err = 0; - int16_t unused; - V9fsStat v9stat; - size_t offset = 7; - struct stat stbuf; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - - v9fs_stat_init(&v9stat); - err = pdu_unmarshal(pdu, offset, "dwS", &fid, &unused, &v9stat); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_wstat(pdu->tag, pdu->id, fid, - v9stat.mode, v9stat.atime, v9stat.mtime); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - /* do we need to sync the file? */ - if (donttouch_stat(&v9stat)) { - err = v9fs_co_fsync(pdu, fidp, 0); - goto out; - } - if (v9stat.mode != -1) { - uint32_t v9_mode; - err = v9fs_co_lstat(pdu, &fidp->path, &stbuf); - if (err < 0) { - goto out; - } - v9_mode = stat_to_v9mode(&stbuf); - if ((v9stat.mode & P9_STAT_MODE_TYPE_BITS) != - (v9_mode & P9_STAT_MODE_TYPE_BITS)) { - /* Attempting to change the type */ - err = -EIO; - goto out; - } - err = v9fs_co_chmod(pdu, &fidp->path, - v9mode_to_mode(v9stat.mode, - &v9stat.extension)); - if (err < 0) { - goto out; - } - } - if (v9stat.mtime != -1 || v9stat.atime != -1) { - struct timespec times[2]; - if (v9stat.atime != -1) { - times[0].tv_sec = v9stat.atime; - times[0].tv_nsec = 0; - } else { - times[0].tv_nsec = UTIME_OMIT; - } - if (v9stat.mtime != -1) { - times[1].tv_sec = v9stat.mtime; - times[1].tv_nsec = 0; - } else { - times[1].tv_nsec = UTIME_OMIT; - } - err = v9fs_co_utimensat(pdu, &fidp->path, times); - if (err < 0) { - goto out; - } - } - if (v9stat.n_gid != -1 || v9stat.n_uid != -1) { - err = v9fs_co_chown(pdu, &fidp->path, v9stat.n_uid, v9stat.n_gid); - if (err < 0) { - goto out; - } - } - if (v9stat.name.size != 0) { - err = v9fs_complete_rename(pdu, fidp, -1, &v9stat.name); - if (err < 0) { - goto out; - } - } - if (v9stat.length != -1) { - err = v9fs_co_truncate(pdu, &fidp->path, v9stat.length); - if (err < 0) { - goto out; - } - } - err = offset; -out: - put_fid(pdu, fidp); -out_nofid: - v9fs_stat_free(&v9stat); - pdu_complete(pdu, err); -} - -static int v9fs_fill_statfs(V9fsState *s, V9fsPDU *pdu, struct statfs *stbuf) -{ - uint32_t f_type; - uint32_t f_bsize; - uint64_t f_blocks; - uint64_t f_bfree; - uint64_t f_bavail; - uint64_t f_files; - uint64_t f_ffree; - uint64_t fsid_val; - uint32_t f_namelen; - size_t offset = 7; - int32_t bsize_factor; - - /* - * compute bsize factor based on host file system block size - * and client msize - */ - bsize_factor = (s->msize - P9_IOHDRSZ)/stbuf->f_bsize; - if (!bsize_factor) { - bsize_factor = 1; - } - f_type = stbuf->f_type; - f_bsize = stbuf->f_bsize; - f_bsize *= bsize_factor; - /* - * f_bsize is adjusted(multiplied) by bsize factor, so we need to - * adjust(divide) the number of blocks, free blocks and available - * blocks by bsize factor - */ - f_blocks = stbuf->f_blocks/bsize_factor; - f_bfree = stbuf->f_bfree/bsize_factor; - f_bavail = stbuf->f_bavail/bsize_factor; - f_files = stbuf->f_files; - f_ffree = stbuf->f_ffree; - fsid_val = (unsigned int) stbuf->f_fsid.__val[0] | - (unsigned long long)stbuf->f_fsid.__val[1] << 32; - f_namelen = stbuf->f_namelen; - - return pdu_marshal(pdu, offset, "ddqqqqqqd", - f_type, f_bsize, f_blocks, f_bfree, - f_bavail, f_files, f_ffree, - fsid_val, f_namelen); -} - -static void v9fs_statfs(void *opaque) -{ - int32_t fid; - ssize_t retval = 0; - size_t offset = 7; - V9fsFidState *fidp; - struct statfs stbuf; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - retval = pdu_unmarshal(pdu, offset, "d", &fid); - if (retval < 0) { - goto out_nofid; - } - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - retval = -ENOENT; - goto out_nofid; - } - retval = v9fs_co_statfs(pdu, &fidp->path, &stbuf); - if (retval < 0) { - goto out; - } - retval = v9fs_fill_statfs(s, pdu, &stbuf); - if (retval < 0) { - goto out; - } - retval += offset; -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, retval); -} - -static void v9fs_mknod(void *opaque) -{ - - int mode; - gid_t gid; - int32_t fid; - V9fsQID qid; - int err = 0; - int major, minor; - size_t offset = 7; - V9fsString name; - struct stat stbuf; - V9fsFidState *fidp; - V9fsPDU *pdu = opaque; - - v9fs_string_init(&name); - err = pdu_unmarshal(pdu, offset, "dsdddd", &fid, &name, &mode, - &major, &minor, &gid); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_mknod(pdu->tag, pdu->id, fid, mode, major, minor); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - err = v9fs_co_mknod(pdu, fidp, &name, fidp->uid, gid, - makedev(major, minor), mode, &stbuf); - if (err < 0) { - goto out; - } - stat_to_qid(&stbuf, &qid); - err = pdu_marshal(pdu, offset, "Q", &qid); - if (err < 0) { - goto out; - } - err += offset; - trace_v9fs_mknod_return(pdu->tag, pdu->id, - qid.type, qid.version, qid.path); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); -} - -/* - * Implement posix byte range locking code - * Server side handling of locking code is very simple, because 9p server in - * QEMU can handle only one client. And most of the lock handling - * (like conflict, merging) etc is done by the VFS layer itself, so no need to - * do any thing in * qemu 9p server side lock code path. - * So when a TLOCK request comes, always return success - */ -static void v9fs_lock(void *opaque) -{ - int8_t status; - V9fsFlock flock; - size_t offset = 7; - struct stat stbuf; - V9fsFidState *fidp; - int32_t fid, err = 0; - V9fsPDU *pdu = opaque; - - status = P9_LOCK_ERROR; - v9fs_string_init(&flock.client_id); - err = pdu_unmarshal(pdu, offset, "dbdqqds", &fid, &flock.type, - &flock.flags, &flock.start, &flock.length, - &flock.proc_id, &flock.client_id); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_lock(pdu->tag, pdu->id, fid, - flock.type, flock.start, flock.length); - - - /* We support only block flag now (that too ignored currently) */ - if (flock.flags & ~P9_LOCK_FLAGS_BLOCK) { - err = -EINVAL; - goto out_nofid; - } - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - err = v9fs_co_fstat(pdu, fidp, &stbuf); - if (err < 0) { - goto out; - } - status = P9_LOCK_SUCCESS; -out: - put_fid(pdu, fidp); -out_nofid: - err = pdu_marshal(pdu, offset, "b", status); - if (err > 0) { - err += offset; - } - trace_v9fs_lock_return(pdu->tag, pdu->id, status); - pdu_complete(pdu, err); - v9fs_string_free(&flock.client_id); -} - -/* - * When a TGETLOCK request comes, always return success because all lock - * handling is done by client's VFS layer. - */ -static void v9fs_getlock(void *opaque) -{ - size_t offset = 7; - struct stat stbuf; - V9fsFidState *fidp; - V9fsGetlock glock; - int32_t fid, err = 0; - V9fsPDU *pdu = opaque; - - v9fs_string_init(&glock.client_id); - err = pdu_unmarshal(pdu, offset, "dbqqds", &fid, &glock.type, - &glock.start, &glock.length, &glock.proc_id, - &glock.client_id); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_getlock(pdu->tag, pdu->id, fid, - glock.type, glock.start, glock.length); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - err = v9fs_co_fstat(pdu, fidp, &stbuf); - if (err < 0) { - goto out; - } - glock.type = P9_LOCK_TYPE_UNLCK; - err = pdu_marshal(pdu, offset, "bqqds", glock.type, - glock.start, glock.length, glock.proc_id, - &glock.client_id); - if (err < 0) { - goto out; - } - err += offset; - trace_v9fs_getlock_return(pdu->tag, pdu->id, glock.type, glock.start, - glock.length, glock.proc_id); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&glock.client_id); -} - -static void v9fs_mkdir(void *opaque) -{ - V9fsPDU *pdu = opaque; - size_t offset = 7; - int32_t fid; - struct stat stbuf; - V9fsQID qid; - V9fsString name; - V9fsFidState *fidp; - gid_t gid; - int mode; - int err = 0; - - v9fs_string_init(&name); - err = pdu_unmarshal(pdu, offset, "dsdd", &fid, &name, &mode, &gid); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_mkdir(pdu->tag, pdu->id, fid, name.data, mode, gid); - - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - err = v9fs_co_mkdir(pdu, fidp, &name, mode, fidp->uid, gid, &stbuf); - if (err < 0) { - goto out; - } - stat_to_qid(&stbuf, &qid); - err = pdu_marshal(pdu, offset, "Q", &qid); - if (err < 0) { - goto out; - } - err += offset; - trace_v9fs_mkdir_return(pdu->tag, pdu->id, - qid.type, qid.version, qid.path, err); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); -} - -static void v9fs_xattrwalk(void *opaque) -{ - int64_t size; - V9fsString name; - ssize_t err = 0; - size_t offset = 7; - int32_t fid, newfid; - V9fsFidState *file_fidp; - V9fsFidState *xattr_fidp = NULL; - V9fsPDU *pdu = opaque; - V9fsState *s = pdu->s; - - v9fs_string_init(&name); - err = pdu_unmarshal(pdu, offset, "dds", &fid, &newfid, &name); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_xattrwalk(pdu->tag, pdu->id, fid, newfid, name.data); - - file_fidp = get_fid(pdu, fid); - if (file_fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - xattr_fidp = alloc_fid(s, newfid); - if (xattr_fidp == NULL) { - err = -EINVAL; - goto out; - } - v9fs_path_copy(&xattr_fidp->path, &file_fidp->path); - if (name.data == NULL) { - /* - * listxattr request. Get the size first - */ - size = v9fs_co_llistxattr(pdu, &xattr_fidp->path, NULL, 0); - if (size < 0) { - err = size; - clunk_fid(s, xattr_fidp->fid); - goto out; - } - /* - * Read the xattr value - */ - xattr_fidp->fs.xattr.len = size; - xattr_fidp->fid_type = P9_FID_XATTR; - xattr_fidp->fs.xattr.copied_len = -1; - if (size) { - xattr_fidp->fs.xattr.value = g_malloc(size); - err = v9fs_co_llistxattr(pdu, &xattr_fidp->path, - xattr_fidp->fs.xattr.value, - xattr_fidp->fs.xattr.len); - if (err < 0) { - clunk_fid(s, xattr_fidp->fid); - goto out; - } - } - err = pdu_marshal(pdu, offset, "q", size); - if (err < 0) { - goto out; - } - err += offset; - } else { - /* - * specific xattr fid. We check for xattr - * presence also collect the xattr size - */ - size = v9fs_co_lgetxattr(pdu, &xattr_fidp->path, - &name, NULL, 0); - if (size < 0) { - err = size; - clunk_fid(s, xattr_fidp->fid); - goto out; - } - /* - * Read the xattr value - */ - xattr_fidp->fs.xattr.len = size; - xattr_fidp->fid_type = P9_FID_XATTR; - xattr_fidp->fs.xattr.copied_len = -1; - if (size) { - xattr_fidp->fs.xattr.value = g_malloc(size); - err = v9fs_co_lgetxattr(pdu, &xattr_fidp->path, - &name, xattr_fidp->fs.xattr.value, - xattr_fidp->fs.xattr.len); - if (err < 0) { - clunk_fid(s, xattr_fidp->fid); - goto out; - } - } - err = pdu_marshal(pdu, offset, "q", size); - if (err < 0) { - goto out; - } - err += offset; - } - trace_v9fs_xattrwalk_return(pdu->tag, pdu->id, size); -out: - put_fid(pdu, file_fidp); - if (xattr_fidp) { - put_fid(pdu, xattr_fidp); - } -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); -} - -static void v9fs_xattrcreate(void *opaque) -{ - int flags; - int32_t fid; - int64_t size; - ssize_t err = 0; - V9fsString name; - size_t offset = 7; - V9fsFidState *file_fidp; - V9fsFidState *xattr_fidp; - V9fsPDU *pdu = opaque; - - v9fs_string_init(&name); - err = pdu_unmarshal(pdu, offset, "dsqd", &fid, &name, &size, &flags); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_xattrcreate(pdu->tag, pdu->id, fid, name.data, size, flags); - - file_fidp = get_fid(pdu, fid); - if (file_fidp == NULL) { - err = -EINVAL; - goto out_nofid; - } - /* Make the file fid point to xattr */ - xattr_fidp = file_fidp; - xattr_fidp->fid_type = P9_FID_XATTR; - xattr_fidp->fs.xattr.copied_len = 0; - xattr_fidp->fs.xattr.len = size; - xattr_fidp->fs.xattr.flags = flags; - v9fs_string_init(&xattr_fidp->fs.xattr.name); - v9fs_string_copy(&xattr_fidp->fs.xattr.name, &name); - xattr_fidp->fs.xattr.value = g_malloc(size); - err = offset; - put_fid(pdu, file_fidp); -out_nofid: - pdu_complete(pdu, err); - v9fs_string_free(&name); -} - -static void v9fs_readlink(void *opaque) -{ - V9fsPDU *pdu = opaque; - size_t offset = 7; - V9fsString target; - int32_t fid; - int err = 0; - V9fsFidState *fidp; - - err = pdu_unmarshal(pdu, offset, "d", &fid); - if (err < 0) { - goto out_nofid; - } - trace_v9fs_readlink(pdu->tag, pdu->id, fid); - fidp = get_fid(pdu, fid); - if (fidp == NULL) { - err = -ENOENT; - goto out_nofid; - } - - v9fs_string_init(&target); - err = v9fs_co_readlink(pdu, &fidp->path, &target); - if (err < 0) { - goto out; - } - err = pdu_marshal(pdu, offset, "s", &target); - if (err < 0) { - v9fs_string_free(&target); - goto out; - } - err += offset; - trace_v9fs_readlink_return(pdu->tag, pdu->id, target.data); - v9fs_string_free(&target); -out: - put_fid(pdu, fidp); -out_nofid: - pdu_complete(pdu, err); -} - -static CoroutineEntry *pdu_co_handlers[] = { - [P9_TREADDIR] = v9fs_readdir, - [P9_TSTATFS] = v9fs_statfs, - [P9_TGETATTR] = v9fs_getattr, - [P9_TSETATTR] = v9fs_setattr, - [P9_TXATTRWALK] = v9fs_xattrwalk, - [P9_TXATTRCREATE] = v9fs_xattrcreate, - [P9_TMKNOD] = v9fs_mknod, - [P9_TRENAME] = v9fs_rename, - [P9_TLOCK] = v9fs_lock, - [P9_TGETLOCK] = v9fs_getlock, - [P9_TRENAMEAT] = v9fs_renameat, - [P9_TREADLINK] = v9fs_readlink, - [P9_TUNLINKAT] = v9fs_unlinkat, - [P9_TMKDIR] = v9fs_mkdir, - [P9_TVERSION] = v9fs_version, - [P9_TLOPEN] = v9fs_open, - [P9_TATTACH] = v9fs_attach, - [P9_TSTAT] = v9fs_stat, - [P9_TWALK] = v9fs_walk, - [P9_TCLUNK] = v9fs_clunk, - [P9_TFSYNC] = v9fs_fsync, - [P9_TOPEN] = v9fs_open, - [P9_TREAD] = v9fs_read, -#if 0 - [P9_TAUTH] = v9fs_auth, -#endif - [P9_TFLUSH] = v9fs_flush, - [P9_TLINK] = v9fs_link, - [P9_TSYMLINK] = v9fs_symlink, - [P9_TCREATE] = v9fs_create, - [P9_TLCREATE] = v9fs_lcreate, - [P9_TWRITE] = v9fs_write, - [P9_TWSTAT] = v9fs_wstat, - [P9_TREMOVE] = v9fs_remove, -}; - -static void v9fs_op_not_supp(void *opaque) -{ - V9fsPDU *pdu = opaque; - pdu_complete(pdu, -EOPNOTSUPP); -} - -static void v9fs_fs_ro(void *opaque) -{ - V9fsPDU *pdu = opaque; - pdu_complete(pdu, -EROFS); -} - -static inline bool is_read_only_op(V9fsPDU *pdu) -{ - switch (pdu->id) { - case P9_TREADDIR: - case P9_TSTATFS: - case P9_TGETATTR: - case P9_TXATTRWALK: - case P9_TLOCK: - case P9_TGETLOCK: - case P9_TREADLINK: - case P9_TVERSION: - case P9_TLOPEN: - case P9_TATTACH: - case P9_TSTAT: - case P9_TWALK: - case P9_TCLUNK: - case P9_TFSYNC: - case P9_TOPEN: - case P9_TREAD: - case P9_TAUTH: - case P9_TFLUSH: - return 1; - default: - return 0; - } -} - -void pdu_submit(V9fsPDU *pdu) -{ - Coroutine *co; - CoroutineEntry *handler; - V9fsState *s = pdu->s; - - if (pdu->id >= ARRAY_SIZE(pdu_co_handlers) || - (pdu_co_handlers[pdu->id] == NULL)) { - handler = v9fs_op_not_supp; - } else { - handler = pdu_co_handlers[pdu->id]; - } - - if (is_ro_export(&s->ctx) && !is_read_only_op(pdu)) { - handler = v9fs_fs_ro; - } - co = qemu_coroutine_create(handler); - qemu_coroutine_enter(co, pdu); -} - -/* Returns 0 on success, 1 on failure. */ -int v9fs_device_realize_common(V9fsState *s, Error **errp) -{ - V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); - int i, len; - struct stat stat; - FsDriverEntry *fse; - V9fsPath path; - int rc = 1; - - /* initialize pdu allocator */ - QLIST_INIT(&s->free_list); - QLIST_INIT(&s->active_list); - for (i = 0; i < (MAX_REQ - 1); i++) { - QLIST_INSERT_HEAD(&s->free_list, &v->pdus[i], next); - v->pdus[i].s = s; - v->pdus[i].idx = i; - } - - v9fs_path_init(&path); - - fse = get_fsdev_fsentry(s->fsconf.fsdev_id); - - if (!fse) { - /* We don't have a fsdev identified by fsdev_id */ - error_setg(errp, "9pfs device couldn't find fsdev with the " - "id = %s", - s->fsconf.fsdev_id ? s->fsconf.fsdev_id : "NULL"); - goto out; - } - - if (!s->fsconf.tag) { - /* we haven't specified a mount_tag */ - error_setg(errp, "fsdev with id %s needs mount_tag arguments", - s->fsconf.fsdev_id); - goto out; - } - - s->ctx.export_flags = fse->export_flags; - s->ctx.fs_root = g_strdup(fse->path); - s->ctx.exops.get_st_gen = NULL; - len = strlen(s->fsconf.tag); - if (len > MAX_TAG_LEN - 1) { - error_setg(errp, "mount tag '%s' (%d bytes) is longer than " - "maximum (%d bytes)", s->fsconf.tag, len, MAX_TAG_LEN - 1); - goto out; - } - - s->tag = g_strdup(s->fsconf.tag); - s->ctx.uid = -1; - - s->ops = fse->ops; - - s->fid_list = NULL; - qemu_co_rwlock_init(&s->rename_lock); - - if (s->ops->init(&s->ctx) < 0) { - error_setg(errp, "9pfs Failed to initialize fs-driver with id:%s" - " and export path:%s", s->fsconf.fsdev_id, s->ctx.fs_root); - goto out; - } - - /* - * Check details of export path, We need to use fs driver - * call back to do that. Since we are in the init path, we don't - * use co-routines here. - */ - if (s->ops->name_to_path(&s->ctx, NULL, "/", &path) < 0) { - error_setg(errp, - "error in converting name to path %s", strerror(errno)); - goto out; - } - if (s->ops->lstat(&s->ctx, &path, &stat)) { - error_setg(errp, "share path %s does not exist", fse->path); - goto out; - } else if (!S_ISDIR(stat.st_mode)) { - error_setg(errp, "share path %s is not a directory", fse->path); - goto out; - } - v9fs_path_free(&path); - - rc = 0; -out: - if (rc) { - g_free(s->ctx.fs_root); - g_free(s->tag); - v9fs_path_free(&path); - } - return rc; -} - -void v9fs_device_unrealize_common(V9fsState *s, Error **errp) -{ - g_free(s->ctx.fs_root); - g_free(s->tag); -} - -static void __attribute__((__constructor__)) v9fs_set_fd_limit(void) -{ - struct rlimit rlim; - if (getrlimit(RLIMIT_NOFILE, &rlim) < 0) { - error_report("Failed to get the resource limit"); - exit(1); - } - open_fd_hw = rlim.rlim_cur - MIN(400, rlim.rlim_cur/3); - open_fd_rc = rlim.rlim_cur/2; -} diff --git a/qemu/hw/9pfs/9p.h b/qemu/hw/9pfs/9p.h deleted file mode 100644 index 1a19418a8..000000000 --- a/qemu/hw/9pfs/9p.h +++ /dev/null @@ -1,324 +0,0 @@ -#ifndef _QEMU_9P_H -#define _QEMU_9P_H - -#include -#include -#include -#include -#include "standard-headers/linux/virtio_9p.h" -#include "hw/virtio/virtio.h" -#include "fsdev/file-op-9p.h" -#include "fsdev/9p-iov-marshal.h" -#include "qemu/thread.h" -#include "qemu/coroutine.h" - -enum { - P9_TLERROR = 6, - P9_RLERROR, - P9_TSTATFS = 8, - P9_RSTATFS, - P9_TLOPEN = 12, - P9_RLOPEN, - P9_TLCREATE = 14, - P9_RLCREATE, - P9_TSYMLINK = 16, - P9_RSYMLINK, - P9_TMKNOD = 18, - P9_RMKNOD, - P9_TRENAME = 20, - P9_RRENAME, - P9_TREADLINK = 22, - P9_RREADLINK, - P9_TGETATTR = 24, - P9_RGETATTR, - P9_TSETATTR = 26, - P9_RSETATTR, - P9_TXATTRWALK = 30, - P9_RXATTRWALK, - P9_TXATTRCREATE = 32, - P9_RXATTRCREATE, - P9_TREADDIR = 40, - P9_RREADDIR, - P9_TFSYNC = 50, - P9_RFSYNC, - P9_TLOCK = 52, - P9_RLOCK, - P9_TGETLOCK = 54, - P9_RGETLOCK, - P9_TLINK = 70, - P9_RLINK, - P9_TMKDIR = 72, - P9_RMKDIR, - P9_TRENAMEAT = 74, - P9_RRENAMEAT, - P9_TUNLINKAT = 76, - P9_RUNLINKAT, - P9_TVERSION = 100, - P9_RVERSION, - P9_TAUTH = 102, - P9_RAUTH, - P9_TATTACH = 104, - P9_RATTACH, - P9_TERROR = 106, - P9_RERROR, - P9_TFLUSH = 108, - P9_RFLUSH, - P9_TWALK = 110, - P9_RWALK, - P9_TOPEN = 112, - P9_ROPEN, - P9_TCREATE = 114, - P9_RCREATE, - P9_TREAD = 116, - P9_RREAD, - P9_TWRITE = 118, - P9_RWRITE, - P9_TCLUNK = 120, - P9_RCLUNK, - P9_TREMOVE = 122, - P9_RREMOVE, - P9_TSTAT = 124, - P9_RSTAT, - P9_TWSTAT = 126, - P9_RWSTAT, -}; - - -/* qid.types */ -enum { - P9_QTDIR = 0x80, - P9_QTAPPEND = 0x40, - P9_QTEXCL = 0x20, - P9_QTMOUNT = 0x10, - P9_QTAUTH = 0x08, - P9_QTTMP = 0x04, - P9_QTSYMLINK = 0x02, - P9_QTLINK = 0x01, - P9_QTFILE = 0x00, -}; - -enum p9_proto_version { - V9FS_PROTO_2000U = 0x01, - V9FS_PROTO_2000L = 0x02, -}; - -#define P9_NOTAG (u16)(~0) -#define P9_NOFID (u32)(~0) -#define P9_MAXWELEM 16 - -#define FID_REFERENCED 0x1 -#define FID_NON_RECLAIMABLE 0x2 -static inline char *rpath(FsContext *ctx, const char *path) -{ - return g_strdup_printf("%s/%s", ctx->fs_root, path); -} - -/* - * ample room for Twrite/Rread header - * size[4] Tread/Twrite tag[2] fid[4] offset[8] count[4] - */ -#define P9_IOHDRSZ 24 - -typedef struct V9fsPDU V9fsPDU; -struct V9fsState; - -struct V9fsPDU -{ - uint32_t size; - uint16_t tag; - uint8_t id; - uint8_t cancelled; - CoQueue complete; - struct V9fsState *s; - QLIST_ENTRY(V9fsPDU) next; - uint32_t idx; -}; - - -/* FIXME - * 1) change user needs to set groups and stuff - */ - -#define MAX_REQ 128 -#define MAX_TAG_LEN 32 - -#define BUG_ON(cond) assert(!(cond)) - -typedef struct V9fsFidState V9fsFidState; - -enum { - P9_FID_NONE = 0, - P9_FID_FILE, - P9_FID_DIR, - P9_FID_XATTR, -}; - -typedef struct V9fsConf -{ - /* tag name for the device */ - char *tag; - char *fsdev_id; -} V9fsConf; - -typedef struct V9fsXattr -{ - int64_t copied_len; - int64_t len; - void *value; - V9fsString name; - int flags; -} V9fsXattr; - -/* - * Filled by fs driver on open and other - * calls. - */ -union V9fsFidOpenState { - int fd; - DIR *dir; - V9fsXattr xattr; - /* - * private pointer for fs drivers, that - * have its own internal representation of - * open files. - */ - void *private; -}; - -struct V9fsFidState -{ - int fid_type; - int32_t fid; - V9fsPath path; - V9fsFidOpenState fs; - V9fsFidOpenState fs_reclaim; - int flags; - int open_flags; - uid_t uid; - int ref; - int clunked; - V9fsFidState *next; - V9fsFidState *rclm_lst; -}; - -typedef struct V9fsState -{ - QLIST_HEAD(, V9fsPDU) free_list; - QLIST_HEAD(, V9fsPDU) active_list; - V9fsFidState *fid_list; - FileOperations *ops; - FsContext ctx; - char *tag; - enum p9_proto_version proto_version; - int32_t msize; - /* - * lock ensuring atomic path update - * on rename. - */ - CoRwlock rename_lock; - int32_t root_fid; - Error *migration_blocker; - V9fsConf fsconf; -} V9fsState; - -/* 9p2000.L open flags */ -#define P9_DOTL_RDONLY 00000000 -#define P9_DOTL_WRONLY 00000001 -#define P9_DOTL_RDWR 00000002 -#define P9_DOTL_NOACCESS 00000003 -#define P9_DOTL_CREATE 00000100 -#define P9_DOTL_EXCL 00000200 -#define P9_DOTL_NOCTTY 00000400 -#define P9_DOTL_TRUNC 00001000 -#define P9_DOTL_APPEND 00002000 -#define P9_DOTL_NONBLOCK 00004000 -#define P9_DOTL_DSYNC 00010000 -#define P9_DOTL_FASYNC 00020000 -#define P9_DOTL_DIRECT 00040000 -#define P9_DOTL_LARGEFILE 00100000 -#define P9_DOTL_DIRECTORY 00200000 -#define P9_DOTL_NOFOLLOW 00400000 -#define P9_DOTL_NOATIME 01000000 -#define P9_DOTL_CLOEXEC 02000000 -#define P9_DOTL_SYNC 04000000 - -/* 9p2000.L at flags */ -#define P9_DOTL_AT_REMOVEDIR 0x200 - -/* 9P2000.L lock type */ -#define P9_LOCK_TYPE_RDLCK 0 -#define P9_LOCK_TYPE_WRLCK 1 -#define P9_LOCK_TYPE_UNLCK 2 - -#define P9_LOCK_SUCCESS 0 -#define P9_LOCK_BLOCKED 1 -#define P9_LOCK_ERROR 2 -#define P9_LOCK_GRACE 3 - -#define P9_LOCK_FLAGS_BLOCK 1 -#define P9_LOCK_FLAGS_RECLAIM 2 - -typedef struct V9fsFlock -{ - uint8_t type; - uint32_t flags; - uint64_t start; /* absolute offset */ - uint64_t length; - uint32_t proc_id; - V9fsString client_id; -} V9fsFlock; - -typedef struct V9fsGetlock -{ - uint8_t type; - uint64_t start; /* absolute offset */ - uint64_t length; - uint32_t proc_id; - V9fsString client_id; -} V9fsGetlock; - -extern int open_fd_hw; -extern int total_open_fd; - -static inline void v9fs_path_write_lock(V9fsState *s) -{ - if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) { - qemu_co_rwlock_wrlock(&s->rename_lock); - } -} - -static inline void v9fs_path_read_lock(V9fsState *s) -{ - if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) { - qemu_co_rwlock_rdlock(&s->rename_lock); - } -} - -static inline void v9fs_path_unlock(V9fsState *s) -{ - if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) { - qemu_co_rwlock_unlock(&s->rename_lock); - } -} - -static inline uint8_t v9fs_request_cancelled(V9fsPDU *pdu) -{ - return pdu->cancelled; -} - -extern void v9fs_reclaim_fd(V9fsPDU *pdu); -extern void v9fs_path_init(V9fsPath *path); -extern void v9fs_path_free(V9fsPath *path); -extern void v9fs_path_copy(V9fsPath *lhs, V9fsPath *rhs); -extern int v9fs_name_to_path(V9fsState *s, V9fsPath *dirpath, - const char *name, V9fsPath *path); -extern int v9fs_device_realize_common(V9fsState *s, Error **errp); -extern void v9fs_device_unrealize_common(V9fsState *s, Error **errp); - -ssize_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...); -ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...); -V9fsPDU *pdu_alloc(V9fsState *s); -void pdu_free(V9fsPDU *pdu); -void pdu_submit(V9fsPDU *pdu); - -#endif diff --git a/qemu/hw/9pfs/Makefile.objs b/qemu/hw/9pfs/Makefile.objs deleted file mode 100644 index da0ae0cfd..000000000 --- a/qemu/hw/9pfs/Makefile.objs +++ /dev/null @@ -1,9 +0,0 @@ -common-obj-y = 9p.o -common-obj-y += 9p-local.o 9p-xattr.o -common-obj-y += 9p-xattr-user.o 9p-posix-acl.o -common-obj-y += coth.o cofs.o codir.o cofile.o -common-obj-y += coxattr.o 9p-synth.o -common-obj-$(CONFIG_OPEN_BY_HANDLE) += 9p-handle.o -common-obj-y += 9p-proxy.o - -obj-y += virtio-9p-device.o diff --git a/qemu/hw/9pfs/codir.c b/qemu/hw/9pfs/codir.c deleted file mode 100644 index 91df7f7a7..000000000 --- a/qemu/hw/9pfs/codir.c +++ /dev/null @@ -1,169 +0,0 @@ - -/* - * Virtio 9p backend - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "fsdev/qemu-fsdev.h" -#include "qemu/thread.h" -#include "qemu/coroutine.h" -#include "coth.h" - -int v9fs_co_readdir_r(V9fsPDU *pdu, V9fsFidState *fidp, struct dirent *dent, - struct dirent **result) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - errno = 0; - err = s->ops->readdir_r(&s->ctx, &fidp->fs, dent, result); - if (!*result && errno) { - err = -errno; - } else { - err = 0; - } - }); - return err; -} - -off_t v9fs_co_telldir(V9fsPDU *pdu, V9fsFidState *fidp) -{ - off_t err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->telldir(&s->ctx, &fidp->fs); - if (err < 0) { - err = -errno; - } - }); - return err; -} - -void v9fs_co_seekdir(V9fsPDU *pdu, V9fsFidState *fidp, off_t offset) -{ - V9fsState *s = pdu->s; - if (v9fs_request_cancelled(pdu)) { - return; - } - v9fs_co_run_in_worker( - { - s->ops->seekdir(&s->ctx, &fidp->fs, offset); - }); -} - -void v9fs_co_rewinddir(V9fsPDU *pdu, V9fsFidState *fidp) -{ - V9fsState *s = pdu->s; - if (v9fs_request_cancelled(pdu)) { - return; - } - v9fs_co_run_in_worker( - { - s->ops->rewinddir(&s->ctx, &fidp->fs); - }); -} - -int v9fs_co_mkdir(V9fsPDU *pdu, V9fsFidState *fidp, V9fsString *name, - mode_t mode, uid_t uid, gid_t gid, struct stat *stbuf) -{ - int err; - FsCred cred; - V9fsPath path; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - cred_init(&cred); - cred.fc_mode = mode; - cred.fc_uid = uid; - cred.fc_gid = gid; - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->mkdir(&s->ctx, &fidp->path, name->data, &cred); - if (err < 0) { - err = -errno; - } else { - v9fs_path_init(&path); - err = v9fs_name_to_path(s, &fidp->path, name->data, &path); - if (!err) { - err = s->ops->lstat(&s->ctx, &path, stbuf); - if (err < 0) { - err = -errno; - } - } - v9fs_path_free(&path); - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_opendir(V9fsPDU *pdu, V9fsFidState *fidp) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->opendir(&s->ctx, &fidp->path, &fidp->fs); - if (err < 0) { - err = -errno; - } else { - err = 0; - } - }); - v9fs_path_unlock(s); - if (!err) { - total_open_fd++; - if (total_open_fd > open_fd_hw) { - v9fs_reclaim_fd(pdu); - } - } - return err; -} - -int v9fs_co_closedir(V9fsPDU *pdu, V9fsFidOpenState *fs) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->closedir(&s->ctx, fs); - if (err < 0) { - err = -errno; - } - }); - if (!err) { - total_open_fd--; - } - return err; -} diff --git a/qemu/hw/9pfs/cofile.c b/qemu/hw/9pfs/cofile.c deleted file mode 100644 index 293483e0c..000000000 --- a/qemu/hw/9pfs/cofile.c +++ /dev/null @@ -1,276 +0,0 @@ - -/* - * Virtio 9p backend - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "fsdev/qemu-fsdev.h" -#include "qemu/thread.h" -#include "qemu/coroutine.h" -#include "coth.h" - -int v9fs_co_st_gen(V9fsPDU *pdu, V9fsPath *path, mode_t st_mode, - V9fsStatDotl *v9stat) -{ - int err = 0; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - if (s->ctx.exops.get_st_gen) { - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ctx.exops.get_st_gen(&s->ctx, path, st_mode, - &v9stat->st_gen); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - } - return err; -} - -int v9fs_co_lstat(V9fsPDU *pdu, V9fsPath *path, struct stat *stbuf) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->lstat(&s->ctx, path, stbuf); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_fstat(V9fsPDU *pdu, V9fsFidState *fidp, struct stat *stbuf) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->fstat(&s->ctx, fidp->fid_type, &fidp->fs, stbuf); - if (err < 0) { - err = -errno; - } - }); - /* - * Some FS driver (local:mapped-file) can't support fetching attributes - * using file descriptor. Use Path name in that case. - */ - if (err == -EOPNOTSUPP) { - err = v9fs_co_lstat(pdu, &fidp->path, stbuf); - if (err == -ENOENT) { - /* - * fstat on an unlinked file. Work with partial results - * returned from s->ops->fstat - */ - err = 0; - } - } - return err; -} - -int v9fs_co_open(V9fsPDU *pdu, V9fsFidState *fidp, int flags) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->open(&s->ctx, &fidp->path, flags, &fidp->fs); - if (err == -1) { - err = -errno; - } else { - err = 0; - } - }); - v9fs_path_unlock(s); - if (!err) { - total_open_fd++; - if (total_open_fd > open_fd_hw) { - v9fs_reclaim_fd(pdu); - } - } - return err; -} - -int v9fs_co_open2(V9fsPDU *pdu, V9fsFidState *fidp, V9fsString *name, gid_t gid, - int flags, int mode, struct stat *stbuf) -{ - int err; - FsCred cred; - V9fsPath path; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - cred_init(&cred); - cred.fc_mode = mode & 07777; - cred.fc_uid = fidp->uid; - cred.fc_gid = gid; - /* - * Hold the directory fid lock so that directory path name - * don't change. Read lock is fine because this fid cannot - * be used by any other operation. - */ - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->open2(&s->ctx, &fidp->path, - name->data, flags, &cred, &fidp->fs); - if (err < 0) { - err = -errno; - } else { - v9fs_path_init(&path); - err = v9fs_name_to_path(s, &fidp->path, name->data, &path); - if (!err) { - err = s->ops->lstat(&s->ctx, &path, stbuf); - if (err < 0) { - err = -errno; - s->ops->close(&s->ctx, &fidp->fs); - } else { - v9fs_path_copy(&fidp->path, &path); - } - } else { - s->ops->close(&s->ctx, &fidp->fs); - } - v9fs_path_free(&path); - } - }); - v9fs_path_unlock(s); - if (!err) { - total_open_fd++; - if (total_open_fd > open_fd_hw) { - v9fs_reclaim_fd(pdu); - } - } - return err; -} - -int v9fs_co_close(V9fsPDU *pdu, V9fsFidOpenState *fs) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->close(&s->ctx, fs); - if (err < 0) { - err = -errno; - } - }); - if (!err) { - total_open_fd--; - } - return err; -} - -int v9fs_co_fsync(V9fsPDU *pdu, V9fsFidState *fidp, int datasync) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->fsync(&s->ctx, fidp->fid_type, &fidp->fs, datasync); - if (err < 0) { - err = -errno; - } - }); - return err; -} - -int v9fs_co_link(V9fsPDU *pdu, V9fsFidState *oldfid, - V9fsFidState *newdirfid, V9fsString *name) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->link(&s->ctx, &oldfid->path, - &newdirfid->path, name->data); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_pwritev(V9fsPDU *pdu, V9fsFidState *fidp, - struct iovec *iov, int iovcnt, int64_t offset) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->pwritev(&s->ctx, &fidp->fs, iov, iovcnt, offset); - if (err < 0) { - err = -errno; - } - }); - return err; -} - -int v9fs_co_preadv(V9fsPDU *pdu, V9fsFidState *fidp, - struct iovec *iov, int iovcnt, int64_t offset) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->preadv(&s->ctx, &fidp->fs, iov, iovcnt, offset); - if (err < 0) { - err = -errno; - } - }); - return err; -} diff --git a/qemu/hw/9pfs/cofs.c b/qemu/hw/9pfs/cofs.c deleted file mode 100644 index 18c81cb3d..000000000 --- a/qemu/hw/9pfs/cofs.c +++ /dev/null @@ -1,365 +0,0 @@ - -/* - * Virtio 9p backend - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "fsdev/qemu-fsdev.h" -#include "qemu/thread.h" -#include "qemu/coroutine.h" -#include "coth.h" - -static ssize_t __readlink(V9fsState *s, V9fsPath *path, V9fsString *buf) -{ - ssize_t len, maxlen = PATH_MAX; - - buf->data = g_malloc(PATH_MAX); - for(;;) { - len = s->ops->readlink(&s->ctx, path, buf->data, maxlen); - if (len < 0) { - g_free(buf->data); - buf->data = NULL; - buf->size = 0; - break; - } else if (len == maxlen) { - /* - * We dodn't have space to put the NULL or we have more - * to read. Increase the size and try again - */ - maxlen *= 2; - g_free(buf->data); - buf->data = g_malloc(maxlen); - continue; - } - /* - * Null terminate the readlink output - */ - buf->data[len] = '\0'; - buf->size = len; - break; - } - return len; -} - -int v9fs_co_readlink(V9fsPDU *pdu, V9fsPath *path, V9fsString *buf) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = __readlink(s, path, buf); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_statfs(V9fsPDU *pdu, V9fsPath *path, struct statfs *stbuf) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->statfs(&s->ctx, path, stbuf); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_chmod(V9fsPDU *pdu, V9fsPath *path, mode_t mode) -{ - int err; - FsCred cred; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - cred_init(&cred); - cred.fc_mode = mode; - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->chmod(&s->ctx, path, &cred); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_utimensat(V9fsPDU *pdu, V9fsPath *path, - struct timespec times[2]) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->utimensat(&s->ctx, path, times); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_chown(V9fsPDU *pdu, V9fsPath *path, uid_t uid, gid_t gid) -{ - int err; - FsCred cred; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - cred_init(&cred); - cred.fc_uid = uid; - cred.fc_gid = gid; - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->chown(&s->ctx, path, &cred); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_truncate(V9fsPDU *pdu, V9fsPath *path, off_t size) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->truncate(&s->ctx, path, size); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_mknod(V9fsPDU *pdu, V9fsFidState *fidp, V9fsString *name, uid_t uid, - gid_t gid, dev_t dev, mode_t mode, struct stat *stbuf) -{ - int err; - V9fsPath path; - FsCred cred; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - cred_init(&cred); - cred.fc_uid = uid; - cred.fc_gid = gid; - cred.fc_mode = mode; - cred.fc_rdev = dev; - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->mknod(&s->ctx, &fidp->path, name->data, &cred); - if (err < 0) { - err = -errno; - } else { - v9fs_path_init(&path); - err = v9fs_name_to_path(s, &fidp->path, name->data, &path); - if (!err) { - err = s->ops->lstat(&s->ctx, &path, stbuf); - if (err < 0) { - err = -errno; - } - } - v9fs_path_free(&path); - } - }); - v9fs_path_unlock(s); - return err; -} - -/* Only works with path name based fid */ -int v9fs_co_remove(V9fsPDU *pdu, V9fsPath *path) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->remove(&s->ctx, path->data); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_unlinkat(V9fsPDU *pdu, V9fsPath *path, V9fsString *name, int flags) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->unlinkat(&s->ctx, path, name->data, flags); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -/* Only work with path name based fid */ -int v9fs_co_rename(V9fsPDU *pdu, V9fsPath *oldpath, V9fsPath *newpath) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->rename(&s->ctx, oldpath->data, newpath->data); - if (err < 0) { - err = -errno; - } - }); - return err; -} - -int v9fs_co_renameat(V9fsPDU *pdu, V9fsPath *olddirpath, V9fsString *oldname, - V9fsPath *newdirpath, V9fsString *newname) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->renameat(&s->ctx, olddirpath, oldname->data, - newdirpath, newname->data); - if (err < 0) { - err = -errno; - } - }); - return err; -} - -int v9fs_co_symlink(V9fsPDU *pdu, V9fsFidState *dfidp, V9fsString *name, - const char *oldpath, gid_t gid, struct stat *stbuf) -{ - int err; - FsCred cred; - V9fsPath path; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - cred_init(&cred); - cred.fc_uid = dfidp->uid; - cred.fc_gid = gid; - cred.fc_mode = 0777; - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->symlink(&s->ctx, oldpath, &dfidp->path, - name->data, &cred); - if (err < 0) { - err = -errno; - } else { - v9fs_path_init(&path); - err = v9fs_name_to_path(s, &dfidp->path, name->data, &path); - if (!err) { - err = s->ops->lstat(&s->ctx, &path, stbuf); - if (err < 0) { - err = -errno; - } - } - v9fs_path_free(&path); - } - }); - v9fs_path_unlock(s); - return err; -} - -/* - * For path name based fid we don't block. So we can - * directly call the fs driver ops. - */ -int v9fs_co_name_to_path(V9fsPDU *pdu, V9fsPath *dirpath, - const char *name, V9fsPath *path) -{ - int err; - V9fsState *s = pdu->s; - - if (s->ctx.export_flags & V9FS_PATHNAME_FSCONTEXT) { - err = s->ops->name_to_path(&s->ctx, dirpath, name, path); - if (err < 0) { - err = -errno; - } - } else { - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_co_run_in_worker( - { - err = s->ops->name_to_path(&s->ctx, dirpath, name, path); - if (err < 0) { - err = -errno; - } - }); - } - return err; -} diff --git a/qemu/hw/9pfs/coth.c b/qemu/hw/9pfs/coth.c deleted file mode 100644 index 464293ef2..000000000 --- a/qemu/hw/9pfs/coth.c +++ /dev/null @@ -1,42 +0,0 @@ -/* - * 9p backend - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Harsh Prateek Bora - * Venkateswararao Jujjuri(JV) - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "block/thread-pool.h" -#include "qemu/coroutine.h" -#include "qemu/main-loop.h" -#include "coth.h" - -/* Called from QEMU I/O thread. */ -static void coroutine_enter_cb(void *opaque, int ret) -{ - Coroutine *co = opaque; - qemu_coroutine_enter(co, NULL); -} - -/* Called from worker thread. */ -static int coroutine_enter_func(void *arg) -{ - Coroutine *co = arg; - qemu_coroutine_enter(co, NULL); - return 0; -} - -void co_run_in_worker_bh(void *opaque) -{ - Coroutine *co = opaque; - thread_pool_submit_aio(aio_get_thread_pool(qemu_get_aio_context()), - coroutine_enter_func, co, coroutine_enter_cb, co); -} diff --git a/qemu/hw/9pfs/coth.h b/qemu/hw/9pfs/coth.h deleted file mode 100644 index 209fc6a9a..000000000 --- a/qemu/hw/9pfs/coth.h +++ /dev/null @@ -1,99 +0,0 @@ -/* - * 9p backend - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Harsh Prateek Bora - * Venkateswararao Jujjuri(JV) - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#ifndef _QEMU_9P_COTH_H -#define _QEMU_9P_COTH_H - -#include "qemu/thread.h" -#include "qemu/coroutine.h" -#include "virtio-9p.h" - -/* - * we want to use bottom half because we want to make sure the below - * sequence of events. - * - * 1. Yield the coroutine in the QEMU thread. - * 2. Submit the coroutine to a worker thread. - * 3. Enter the coroutine in the worker thread. - * we cannot swap step 1 and 2, because that would imply worker thread - * can enter coroutine while step1 is still running - */ -#define v9fs_co_run_in_worker(code_block) \ - do { \ - QEMUBH *co_bh; \ - co_bh = qemu_bh_new(co_run_in_worker_bh, \ - qemu_coroutine_self()); \ - qemu_bh_schedule(co_bh); \ - /* \ - * yield in qemu thread and re-enter back \ - * in worker thread \ - */ \ - qemu_coroutine_yield(); \ - qemu_bh_delete(co_bh); \ - code_block; \ - /* re-enter back to qemu thread */ \ - qemu_coroutine_yield(); \ - } while (0) - -extern void co_run_in_worker_bh(void *); -extern int v9fs_init_worker_threads(void); -extern int v9fs_co_readlink(V9fsPDU *, V9fsPath *, V9fsString *); -extern int v9fs_co_readdir_r(V9fsPDU *, V9fsFidState *, - struct dirent *, struct dirent **result); -extern off_t v9fs_co_telldir(V9fsPDU *, V9fsFidState *); -extern void v9fs_co_seekdir(V9fsPDU *, V9fsFidState *, off_t); -extern void v9fs_co_rewinddir(V9fsPDU *, V9fsFidState *); -extern int v9fs_co_statfs(V9fsPDU *, V9fsPath *, struct statfs *); -extern int v9fs_co_lstat(V9fsPDU *, V9fsPath *, struct stat *); -extern int v9fs_co_chmod(V9fsPDU *, V9fsPath *, mode_t); -extern int v9fs_co_utimensat(V9fsPDU *, V9fsPath *, struct timespec [2]); -extern int v9fs_co_chown(V9fsPDU *, V9fsPath *, uid_t, gid_t); -extern int v9fs_co_truncate(V9fsPDU *, V9fsPath *, off_t); -extern int v9fs_co_llistxattr(V9fsPDU *, V9fsPath *, void *, size_t); -extern int v9fs_co_lgetxattr(V9fsPDU *, V9fsPath *, - V9fsString *, void *, size_t); -extern int v9fs_co_mknod(V9fsPDU *, V9fsFidState *, V9fsString *, uid_t, - gid_t, dev_t, mode_t, struct stat *); -extern int v9fs_co_mkdir(V9fsPDU *, V9fsFidState *, V9fsString *, - mode_t, uid_t, gid_t, struct stat *); -extern int v9fs_co_remove(V9fsPDU *, V9fsPath *); -extern int v9fs_co_rename(V9fsPDU *, V9fsPath *, V9fsPath *); -extern int v9fs_co_unlinkat(V9fsPDU *, V9fsPath *, V9fsString *, int flags); -extern int v9fs_co_renameat(V9fsPDU *, V9fsPath *, V9fsString *, - V9fsPath *, V9fsString *); -extern int v9fs_co_fstat(V9fsPDU *, V9fsFidState *, struct stat *); -extern int v9fs_co_opendir(V9fsPDU *, V9fsFidState *); -extern int v9fs_co_open(V9fsPDU *, V9fsFidState *, int); -extern int v9fs_co_open2(V9fsPDU *, V9fsFidState *, V9fsString *, - gid_t, int, int, struct stat *); -extern int v9fs_co_lsetxattr(V9fsPDU *, V9fsPath *, V9fsString *, - void *, size_t, int); -extern int v9fs_co_lremovexattr(V9fsPDU *, V9fsPath *, V9fsString *); -extern int v9fs_co_closedir(V9fsPDU *, V9fsFidOpenState *); -extern int v9fs_co_close(V9fsPDU *, V9fsFidOpenState *); -extern int v9fs_co_fsync(V9fsPDU *, V9fsFidState *, int); -extern int v9fs_co_symlink(V9fsPDU *, V9fsFidState *, V9fsString *, - const char *, gid_t, struct stat *); -extern int v9fs_co_link(V9fsPDU *, V9fsFidState *, - V9fsFidState *, V9fsString *); -extern int v9fs_co_pwritev(V9fsPDU *, V9fsFidState *, - struct iovec *, int, int64_t); -extern int v9fs_co_preadv(V9fsPDU *, V9fsFidState *, - struct iovec *, int, int64_t); -extern int v9fs_co_name_to_path(V9fsPDU *, V9fsPath *, - const char *, V9fsPath *); -extern int v9fs_co_st_gen(V9fsPDU *pdu, V9fsPath *path, mode_t, - V9fsStatDotl *v9stat); - -#endif diff --git a/qemu/hw/9pfs/coxattr.c b/qemu/hw/9pfs/coxattr.c deleted file mode 100644 index 6ad96ea9f..000000000 --- a/qemu/hw/9pfs/coxattr.c +++ /dev/null @@ -1,108 +0,0 @@ - -/* - * Virtio 9p backend - * - * Copyright IBM, Corp. 2011 - * - * Authors: - * Aneesh Kumar K.V - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "fsdev/qemu-fsdev.h" -#include "qemu/thread.h" -#include "qemu/coroutine.h" -#include "coth.h" - -int v9fs_co_llistxattr(V9fsPDU *pdu, V9fsPath *path, void *value, size_t size) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->llistxattr(&s->ctx, path, value, size); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_lgetxattr(V9fsPDU *pdu, V9fsPath *path, - V9fsString *xattr_name, - void *value, size_t size) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->lgetxattr(&s->ctx, path, - xattr_name->data, - value, size); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_lsetxattr(V9fsPDU *pdu, V9fsPath *path, - V9fsString *xattr_name, void *value, - size_t size, int flags) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->lsetxattr(&s->ctx, path, - xattr_name->data, value, - size, flags); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} - -int v9fs_co_lremovexattr(V9fsPDU *pdu, V9fsPath *path, - V9fsString *xattr_name) -{ - int err; - V9fsState *s = pdu->s; - - if (v9fs_request_cancelled(pdu)) { - return -EINTR; - } - v9fs_path_read_lock(s); - v9fs_co_run_in_worker( - { - err = s->ops->lremovexattr(&s->ctx, path, xattr_name->data); - if (err < 0) { - err = -errno; - } - }); - v9fs_path_unlock(s); - return err; -} diff --git a/qemu/hw/9pfs/virtio-9p-device.c b/qemu/hw/9pfs/virtio-9p-device.c deleted file mode 100644 index a38850ee8..000000000 --- a/qemu/hw/9pfs/virtio-9p-device.c +++ /dev/null @@ -1,211 +0,0 @@ -/* - * Virtio 9p backend - * - * Copyright IBM, Corp. 2010 - * - * Authors: - * Anthony Liguori - * - * This work is licensed under the terms of the GNU GPL, version 2. See - * the COPYING file in the top-level directory. - * - */ - -#include "qemu/osdep.h" -#include "hw/virtio/virtio.h" -#include "hw/i386/pc.h" -#include "qemu/sockets.h" -#include "virtio-9p.h" -#include "fsdev/qemu-fsdev.h" -#include "9p-xattr.h" -#include "coth.h" -#include "hw/virtio/virtio-access.h" -#include "qemu/iov.h" - -void virtio_9p_push_and_notify(V9fsPDU *pdu) -{ - V9fsState *s = pdu->s; - V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); - VirtQueueElement *elem = v->elems[pdu->idx]; - - /* push onto queue and notify */ - virtqueue_push(v->vq, elem, pdu->size); - g_free(elem); - v->elems[pdu->idx] = NULL; - - /* FIXME: we should batch these completions */ - virtio_notify(VIRTIO_DEVICE(v), v->vq); -} - -static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq) -{ - V9fsVirtioState *v = (V9fsVirtioState *)vdev; - V9fsState *s = &v->state; - V9fsPDU *pdu; - ssize_t len; - - while ((pdu = pdu_alloc(s))) { - struct { - uint32_t size_le; - uint8_t id; - uint16_t tag_le; - } QEMU_PACKED out; - VirtQueueElement *elem; - - elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); - if (!elem) { - pdu_free(pdu); - break; - } - - BUG_ON(elem->out_num == 0 || elem->in_num == 0); - QEMU_BUILD_BUG_ON(sizeof out != 7); - - v->elems[pdu->idx] = elem; - len = iov_to_buf(elem->out_sg, elem->out_num, 0, - &out, sizeof out); - BUG_ON(len != sizeof out); - - pdu->size = le32_to_cpu(out.size_le); - - pdu->id = out.id; - pdu->tag = le16_to_cpu(out.tag_le); - - qemu_co_queue_init(&pdu->complete); - pdu_submit(pdu); - } -} - -static uint64_t virtio_9p_get_features(VirtIODevice *vdev, uint64_t features, - Error **errp) -{ - virtio_add_feature(&features, VIRTIO_9P_MOUNT_TAG); - return features; -} - -static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config) -{ - int len; - struct virtio_9p_config *cfg; - V9fsVirtioState *v = VIRTIO_9P(vdev); - V9fsState *s = &v->state; - - len = strlen(s->tag); - cfg = g_malloc0(sizeof(struct virtio_9p_config) + len); - virtio_stw_p(vdev, &cfg->tag_len, len); - /* We don't copy the terminating null to config space */ - memcpy(cfg->tag, s->tag, len); - memcpy(config, cfg, v->config_size); - g_free(cfg); -} - -static void virtio_9p_save(QEMUFile *f, void *opaque) -{ - virtio_save(VIRTIO_DEVICE(opaque), f); -} - -static int virtio_9p_load(QEMUFile *f, void *opaque, int version_id) -{ - return virtio_load(VIRTIO_DEVICE(opaque), f, version_id); -} - -static void virtio_9p_device_realize(DeviceState *dev, Error **errp) -{ - VirtIODevice *vdev = VIRTIO_DEVICE(dev); - V9fsVirtioState *v = VIRTIO_9P(dev); - V9fsState *s = &v->state; - - if (v9fs_device_realize_common(s, errp)) { - goto out; - } - - v->config_size = sizeof(struct virtio_9p_config) + strlen(s->fsconf.tag); - virtio_init(vdev, "virtio-9p", VIRTIO_ID_9P, v->config_size); - v->vq = virtio_add_queue(vdev, MAX_REQ, handle_9p_output); - register_savevm(dev, "virtio-9p", -1, 1, virtio_9p_save, virtio_9p_load, v); - -out: - return; -} - -static void virtio_9p_device_unrealize(DeviceState *dev, Error **errp) -{ - VirtIODevice *vdev = VIRTIO_DEVICE(dev); - V9fsVirtioState *v = VIRTIO_9P(dev); - V9fsState *s = &v->state; - - virtio_cleanup(vdev); - unregister_savevm(dev, "virtio-9p", v); - v9fs_device_unrealize_common(s, errp); -} - -ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset, - const char *fmt, va_list ap) -{ - V9fsState *s = pdu->s; - V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); - VirtQueueElement *elem = v->elems[pdu->idx]; - - return v9fs_iov_vmarshal(elem->in_sg, elem->in_num, offset, 1, fmt, ap); -} - -ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset, - const char *fmt, va_list ap) -{ - V9fsState *s = pdu->s; - V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); - VirtQueueElement *elem = v->elems[pdu->idx]; - - return v9fs_iov_vunmarshal(elem->out_sg, elem->out_num, offset, 1, fmt, ap); -} - -void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov, - unsigned int *pniov, bool is_write) -{ - V9fsState *s = pdu->s; - V9fsVirtioState *v = container_of(s, V9fsVirtioState, state); - VirtQueueElement *elem = v->elems[pdu->idx]; - - if (is_write) { - *piov = elem->out_sg; - *pniov = elem->out_num; - } else { - *piov = elem->in_sg; - *pniov = elem->in_num; - } -} - -/* virtio-9p device */ - -static Property virtio_9p_properties[] = { - DEFINE_PROP_STRING("mount_tag", V9fsVirtioState, state.fsconf.tag), - DEFINE_PROP_STRING("fsdev", V9fsVirtioState, state.fsconf.fsdev_id), - DEFINE_PROP_END_OF_LIST(), -}; - -static void virtio_9p_class_init(ObjectClass *klass, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(klass); - VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); - - dc->props = virtio_9p_properties; - set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); - vdc->realize = virtio_9p_device_realize; - vdc->unrealize = virtio_9p_device_unrealize; - vdc->get_features = virtio_9p_get_features; - vdc->get_config = virtio_9p_get_config; -} - -static const TypeInfo virtio_device_info = { - .name = TYPE_VIRTIO_9P, - .parent = TYPE_VIRTIO_DEVICE, - .instance_size = sizeof(V9fsVirtioState), - .class_init = virtio_9p_class_init, -}; - -static void virtio_9p_register_types(void) -{ - type_register_static(&virtio_device_info); -} - -type_init(virtio_9p_register_types) diff --git a/qemu/hw/9pfs/virtio-9p.h b/qemu/hw/9pfs/virtio-9p.h deleted file mode 100644 index 7f6d88553..000000000 --- a/qemu/hw/9pfs/virtio-9p.h +++ /dev/null @@ -1,31 +0,0 @@ -#ifndef _QEMU_VIRTIO_9P_H -#define _QEMU_VIRTIO_9P_H - -#include "standard-headers/linux/virtio_9p.h" -#include "hw/virtio/virtio.h" -#include "9p.h" - -typedef struct V9fsVirtioState -{ - VirtIODevice parent_obj; - VirtQueue *vq; - size_t config_size; - V9fsPDU pdus[MAX_REQ]; - VirtQueueElement *elems[MAX_REQ]; - V9fsState state; -} V9fsVirtioState; - -extern void virtio_9p_push_and_notify(V9fsPDU *pdu); - -ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset, - const char *fmt, va_list ap); -ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset, - const char *fmt, va_list ap); -void virtio_init_iov_from_pdu(V9fsPDU *pdu, struct iovec **piov, - unsigned int *pniov, bool is_write); - -#define TYPE_VIRTIO_9P "virtio-9p-device" -#define VIRTIO_9P(obj) \ - OBJECT_CHECK(V9fsVirtioState, (obj), TYPE_VIRTIO_9P) - -#endif -- cgit 1.2.3-korg