The cache_size field of copen is specified by the user daemon.
If cache_size < 0, then the OPEN request is expected to fail,
while copen itself shall succeed. However, returning 0 is indeed
unexpected when cache_size is an invalid error code.
Fix this by returning error when cache_size is an invalid error code.
Fixes: c8383054506c ("cachefiles: notify the user daemon when looking up cookie")
Signed-off-by: Sun Ke <sunke32@xxxxxxxxxx>
---
v3: update the commit log suggested by Jingbo.
fs/cachefiles/ondemand.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cachefiles/ondemand.c b/fs/cachefiles/ondemand.c
index 1fee702d5529..ea8a1e8317d9 100644
--- a/fs/cachefiles/ondemand.c
+++ b/fs/cachefiles/ondemand.c
@@ -159,7 +159,7 @@ int cachefiles_ondemand_copen(struct cachefiles_cache *cache, char *args)
/* fail OPEN request if daemon reports an error */
if (size < 0) {
if (!IS_ERR_VALUE(size))
- size = -EINVAL;
+ ret = size = -EINVAL;
req->error = size;
goto out;
}
--
2.31.1
