diff options
Diffstat (limited to 'src/basic/btrfs-util.c')
| -rw-r--r-- | src/basic/btrfs-util.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/src/basic/btrfs-util.c b/src/basic/btrfs-util.c index 290fabdeff..8c90e1e4a2 100644 --- a/src/basic/btrfs-util.c +++ b/src/basic/btrfs-util.c @@ -105,7 +105,7 @@ int btrfs_is_filesystem(int fd) { return F_TYPE_EQUAL(sfs.f_type, BTRFS_SUPER_MAGIC); } -int btrfs_is_subvol(int fd) { +int btrfs_is_subvol_fd(int fd) { struct stat st; assert(fd >= 0); @@ -121,6 +121,18 @@ int btrfs_is_subvol(int fd) { return btrfs_is_filesystem(fd); } +int btrfs_is_subvol(const char *path) { + _cleanup_close_ int fd = -1; + + assert(path); + + fd = open(path, O_RDONLY|O_NOCTTY|O_CLOEXEC|O_DIRECTORY); + if (fd < 0) + return -errno; + + return btrfs_is_subvol_fd(fd); +} + int btrfs_subvol_make(const char *path) { struct btrfs_ioctl_vol_args args = {}; _cleanup_close_ int fd = -1; @@ -1682,7 +1694,7 @@ int btrfs_subvol_snapshot_fd(int old_fd, const char *new_path, BtrfsSnapshotFlag assert(old_fd >= 0); assert(new_path); - r = btrfs_is_subvol(old_fd); + r = btrfs_is_subvol_fd(old_fd); if (r < 0) return r; if (r == 0) { @@ -1868,7 +1880,7 @@ int btrfs_subvol_auto_qgroup_fd(int fd, uint64_t subvol_id, bool insert_intermed */ if (subvol_id == 0) { - r = btrfs_is_subvol(fd); + r = btrfs_is_subvol_fd(fd); if (r < 0) return r; if (!r) |