[PATCH v2 05/20] btrfs-progs: libbtrfsuitl: Factor out btrfs_util_subvolume_iterator_next()

[Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>]

Factor out the main logic of btrfs_util_subvolume_iterator_next().
This is a preparation work to relax the root privilege of this function.

No functional change happens.

Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
---
 libbtrfsutil/subvolume.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/libbtrfsutil/subvolume.c b/libbtrfsutil/subvolume.c
index e94c7079..73471d4f 100644
--- a/libbtrfsutil/subvolume.c
+++ b/libbtrfsutil/subvolume.c
@@ -1255,9 +1255,9 @@ static enum btrfs_util_error build_subvol_path(struct btrfs_util_subvolume_itera
 	return BTRFS_UTIL_OK;
 }
 
-PUBLIC enum btrfs_util_error btrfs_util_subvolume_iterator_next(struct btrfs_util_subvolume_iterator *iter,
-								char **path_ret,
-								uint64_t *id_ret)
+static enum btrfs_util_error subvolume_iterator_next_root(struct btrfs_util_subvolume_iterator *iter,
+							  char **path_ret,
+							  uint64_t *id_ret)
 {
 	struct search_stack_entry *top;
 	const struct btrfs_ioctl_search_header *header;
@@ -1331,6 +1331,13 @@ out:
 	return BTRFS_UTIL_OK;
 }
 
+PUBLIC enum btrfs_util_error btrfs_util_subvolume_iterator_next(struct btrfs_util_subvolume_iterator *iter,
+								char **path_ret,
+								uint64_t *id_ret)
+{
+	return subvolume_iterator_next_root(iter, path_ret, id_ret);
+}
+
 PUBLIC enum btrfs_util_error btrfs_util_subvolume_iterator_next_info(struct btrfs_util_subvolume_iterator *iter,
 								     char **path_ret,
 								     struct btrfs_util_subvolume_info *subvol)
-- 
2.14.4