cifs: Merge is_path_valid() into get_normalized_path()

commit ff2f7fc08268f266372c30a815349749e8499eb5 upstream.

Just do the trivial path validation in get_normalized_path().

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Rishabh Bhatnagar <risbhat@amazon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
index 31b3dc09e1092c10015a814535237cc3f4de85f4..1efba8ee86bf85b93fcfb859513558897e8f574d 100644 (file)
--- 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)