diff options
| -rw-r--r-- | hw/9pfs/9p-local.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c index b9d4e99851..432a30c3c1 100644 --- a/hw/9pfs/9p-local.c +++ b/hw/9pfs/9p-local.c @@ -84,48 +84,6 @@ static void unlinkat_preserve_errno(int dirfd, const char *path, int flags) #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; -} - static FILE *local_fopenat(int dirfd, const char *name, const char *mode) { int fd, o_mode = 0; @@ -238,135 +196,6 @@ out: 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_set_mapped_file_attrat(int dirfd, const char *name, FsCred *credp) { @@ -516,33 +345,6 @@ static int local_set_xattrat(int dirfd, const char *path, FsCred *credp) 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 int local_set_cred_passthrough(FsContext *fs_ctx, int dirfd, const char *name, FsCred *credp) { |