[PATCH v3 07/11] cifs: Merge is_path_valid() into get_normalized_path()

Paulo Alcantara (SUSE)
2019-11-27T00:37:24Z

Just do the trivial path validation in get_normalized_path().

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
---
fs/cifs/dfs_cache.c | 21 ++++-----------------
1 file changed, 4 insertions(+), 17 deletions(-)

diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
index e889608e5e13..1d1f7c03931b 100644
--- a/fs/cifs/dfs_cache.c
+++ b/fs/cifs/dfs_cache.c
@@ -75,13 +75,11 @@ static void refresh_cache_worker(struct work_struct *work);

static DECLARE_DELAYED_WORK(refresh_task, refresh_cache_worker);

-static inline bool is_path_valid(const char *path)
+static int get_normalized_path(const char *path, char **npath)
{
- return path && (strchr(path + 1, '\\') || strchr(path + 1, '/'));
-}
+ if (!path || strlen(path) < 3 || (*path != '\\' && *path != '/'))
+ return -EINVAL;

-static inline int get_normalized_path(const char *path, char **npath)
-{
if (*path == '\\') {
*npath = (char *)path;
} else {
@@ -828,9 +826,6 @@ int dfs_cache_find(const unsigned int xid, struct cifs_ses *ses,
char *npath;
struct cache_entry *ce;

- if (unlikely(!is_path_valid(path)))
- return -EINVAL;
-
rc = get_normalized_path(path, &npath);
if (rc)
return rc;
@@ -875,9 +870,6 @@ int dfs_cache_noreq_find(const char *path, struct dfs_info3_param *ref,
char *npath;
struct cache_entry *ce;

- if (unlikely(!is_path_valid(path)))
- return -EINVAL;
-
rc = get_normalized_path(path, &npath);
if (rc)
return rc;
@@ -929,9 +921,6 @@ int dfs_cache_update_tgthint(const unsigned int xid, struct cifs_ses *ses,
struct cache_entry *ce;
struct cache_dfs_tgt *t;

- if (unlikely(!is_path_valid(path)))
- return -EINVAL;
-
rc = get_normalized_path(path, &npath);
if (rc)
return rc;
@@ -989,7 +978,7 @@ int dfs_cache_noreq_update_tgthint(const char *path,
struct cache_entry *ce;
struct cache_dfs_tgt *t;

- if (unlikely(!is_path_valid(path)) || !it)
+ if (!it)
return -EINVAL;

rc = get_normalized_path(path, &npath);
@@ -1049,8 +1038,6 @@ int dfs_cache_get_tgt_referral(const char *path,

if (!it || !ref)
return -EINVAL;
- if (unlikely(!is_path_valid(path)))
- return -EINVAL;

rc = get_normalized_path(path, &npath);
if (rc)
--
2.24.0