if (streq(de->d_name, ".") || streq(de->d_name, ".."))
continue;
- if (de->d_type == DT_UNKNOWN || (de->d_type == DT_DIR && root_dev)) {
+ if (de->d_type == DT_UNKNOWN ||
+ (de->d_type == DT_DIR && (root_dev || (flags & REMOVE_SUBVOLUME)))) {
if (fstatat(fd, de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) {
if (ret == 0 && errno != ENOENT)
ret = -errno;
continue;
}
+ if ((flags & REMOVE_SUBVOLUME) && st.st_ino == 256) {
+ struct btrfs_ioctl_vol_args args = {};
+
+ /* This could be a subvolume, try to remove it */
+
+ strncpy(args.name, de->d_name, sizeof(args.name)-1);
+ if (ioctl(fd, BTRFS_IOC_SNAP_DESTROY, &args) < 0) {
+
+ if (errno != ENOTTY && errno != EINVAL) {
+ if (ret == 0)
+ ret = -errno;
+
+ safe_close(subdir_fd);
+ continue;
+ }
+
+ /* ENOTTY, then it wasn't a btrfs subvolume */
+ } else {
+ /* It was a subvolume, continue. */
+ safe_close(subdir_fd);
+ continue;
+ }
+ }
+
/* We pass REMOVE_PHYSICAL here, to avoid
* doing the fstatfs() to check the file
* system type again for each directory */
REMOVE_ONLY_DIRECTORIES = 1,
REMOVE_ROOT = 2,
REMOVE_PHYSICAL = 4, /* if not set, only removes files on tmpfs, never physical file systems */
+ REMOVE_SUBVOLUME = 8,
} RemoveFlags;
int rm_rf_children(int fd, RemoveFlags flags, struct stat *root_dev);