btrfs-progs: btrfs_list_get_path_rootid error handling

btrfs_list_get_path_rootid() tries to return a negative
number on error, but it's a u64 function.  Callers which test
for a return < 0 will never see an error.

Change the function to fill in the rootid via a pointer,
and then return a simple int as error.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/btrfs-list.h b/btrfs-list.h
index 5d874549..2894451d 100644
--- a/btrfs-list.h
+++ b/btrfs-list.h
@@ -156,5 +156,5 @@ int btrfs_list_subvols_print(int fd, struct btrfs_list_filter_set *filter_set,
 int btrfs_list_find_updated_files(int fd, u64 root_id, u64 oldest_gen);
 int btrfs_list_get_default_subvolume(int fd, u64 *default_id);
 char *btrfs_list_path_for_root(int fd, u64 root);
-u64 btrfs_list_get_path_rootid(int fd);
+int btrfs_list_get_path_rootid(int fd, u64 *treeid);
 int btrfs_get_subvol(int fd, struct root_info *the_ri);