[PATCH] fs: ubifs: fix ubifs_finddir() result check

[Patrick Delaunay]

ubifs_finddir() can return a negative error code (-ENOMEM or
PTR_ERR(dent)) and returns 1 when the name is found in the directory.
Fix the result check accordingly.

This fixes file existence detection (for "test -e") when U-Boot uses
UBIFS through ops ubifs_exists(). Since this function is also called
before other file operations, commands such as "load" could be executed
on a non-existing file without reporting an error.

Fixes: 0cab29ff467e ("fs: ubifs: Fix and rework error handling in ubifs_finddir")
Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---

 fs/ubifs/ubifs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
index 3f2e20377458..59bc75473041 100644
--- a/fs/ubifs/ubifs.c
+++ b/fs/ubifs/ubifs.c
@@ -544,7 +544,7 @@ static unsigned long ubifs_findfile(struct super_block *sb, char *filename)
 				*(next++) = '\0';
 		}
 		ret = ubifs_finddir(sb, name, root_inum, &inum);
-		if (!ret) {
+		if (ret <= 0) {
 			kfree(buf);
 			return 0;
 		}
-- 
2.43.0

base-commit: 744cf5d4e398c5f657e5c3eeb44d00fa5175dc85
branch: dfgdfgfddd