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authorAl Viro <viro@zeniv.linux.org.uk>2021-03-18 01:03:34 -0400
committerSteve French <stfrench@microsoft.com>2021-04-25 16:28:23 -0500
commit9cfdb1c12bae26f8aed9df947c456e67ae03096c (patch)
tree22488edd0dfd6adc7ded099c5d3e7a8050c2efe3 /fs/cifs
parent8d7672235533dbeab4a5373b49f1b4273cdc2c6a (diff)
cifs: constify get_normalized_path() properly
As it is, it takes const char * and, in some cases, stores it in caller's variable that is plain char *. Fortunately, none of the callers actually proceeded to modify the string via now-non-const alias, but that's trouble waiting to happen. It's easy to do properly, anyway... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/dfs_cache.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
index e4617ccf0a23..b1fa30fefe1f 100644
--- a/fs/cifs/dfs_cache.c
+++ b/fs/cifs/dfs_cache.c
@@ -81,23 +81,24 @@ static void refresh_cache_worker(struct work_struct *work);
static DECLARE_DELAYED_WORK(refresh_task, refresh_cache_worker);
-static int get_normalized_path(const char *path, char **npath)
+static int get_normalized_path(const char *path, const char **npath)
{
if (!path || strlen(path) < 3 || (*path != '\\' && *path != '/'))
return -EINVAL;
if (*path == '\\') {
- *npath = (char *)path;
+ *npath = path;
} else {
- *npath = kstrdup(path, GFP_KERNEL);
- if (!*npath)
+ char *s = kstrdup(path, GFP_KERNEL);
+ if (!s)
return -ENOMEM;
- convert_delimiter(*npath, '\\');
+ convert_delimiter(s, '\\');
+ *npath = s;
}
return 0;
}
-static inline void free_normalized_path(const char *path, char *npath)
+static inline void free_normalized_path(const char *path, const char *npath)
{
if (path != npath)
kfree(npath);
@@ -882,7 +883,7 @@ int dfs_cache_find(const unsigned int xid, struct cifs_ses *ses,
struct dfs_cache_tgt_list *tgt_list)
{
int rc;
- char *npath;
+ const char *npath;
struct cache_entry *ce;
rc = get_normalized_path(path, &npath);
@@ -936,7 +937,7 @@ int dfs_cache_noreq_find(const char *path, struct dfs_info3_param *ref,
struct dfs_cache_tgt_list *tgt_list)
{
int rc;
- char *npath;
+ const char *npath;
struct cache_entry *ce;
rc = get_normalized_path(path, &npath);
@@ -991,7 +992,7 @@ int dfs_cache_update_tgthint(const unsigned int xid, struct cifs_ses *ses,
const struct dfs_cache_tgt_iterator *it)
{
int rc;
- char *npath;
+ const char *npath;
struct cache_entry *ce;
struct cache_dfs_tgt *t;
@@ -1053,7 +1054,7 @@ int dfs_cache_noreq_update_tgthint(const char *path,
const struct dfs_cache_tgt_iterator *it)
{
int rc;
- char *npath;
+ const char *npath;
struct cache_entry *ce;
struct cache_dfs_tgt *t;
@@ -1111,7 +1112,7 @@ int dfs_cache_get_tgt_referral(const char *path,
struct dfs_info3_param *ref)
{
int rc;
- char *npath;
+ const char *npath;
struct cache_entry *ce;
if (!it || !ref)
@@ -1484,7 +1485,7 @@ static int refresh_tcon(struct vol_info *vi, struct cifs_tcon *tcon)
{
int rc = 0;
unsigned int xid;
- char *path, *npath;
+ const char *path, *npath;
struct cache_entry *ce;
struct cifs_ses *root_ses = NULL, *ses;
struct dfs_info3_param *refs = NULL;