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authorGabriel Krisman Bertazi <krisman@collabora.com>2019-07-03 00:53:22 +0300
committerTheodore Ts'o <tytso@mit.edu>2019-07-03 00:56:12 +0300
commit96fcaf86c3cb9340015fb475d79ef0a6fcf858ed (patch)
tree800f08721544f6984ea1ef0a8db2ca28cab343b3 /fs/ext4/namei.c
parent78e9605d4fdde6d58b2e6db5b6b52dde7f92333e (diff)
downloadlinux-96fcaf86c3cb9340015fb475d79ef0a6fcf858ed.tar.xz
ext4: fix coverity warning on error path of filename setup
Fix the following coverity warning reported by Dan Carpenter: fs/ext4/namei.c:1311 ext4_fname_setup_ci_filename() warn: 'cf_name->len' unsigned <= 0 Fixes: 3ae72562ad91 ("ext4: optimize case-insensitive lookups") Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Diffstat (limited to 'fs/ext4/namei.c')
-rw-r--r--fs/ext4/namei.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index c9568fee9e11..129029534075 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1310,6 +1310,8 @@ int ext4_ci_compare(const struct inode *parent, const struct qstr *name,
void ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname,
struct fscrypt_str *cf_name)
{
+ int len;
+
if (!IS_CASEFOLDED(dir)) {
cf_name->name = NULL;
return;
@@ -1319,13 +1321,16 @@ void ext4_fname_setup_ci_filename(struct inode *dir, const struct qstr *iname,
if (!cf_name->name)
return;
- cf_name->len = utf8_casefold(EXT4_SB(dir->i_sb)->s_encoding,
- iname, cf_name->name,
- EXT4_NAME_LEN);
- if (cf_name->len <= 0) {
+ len = utf8_casefold(EXT4_SB(dir->i_sb)->s_encoding,
+ iname, cf_name->name,
+ EXT4_NAME_LEN);
+ if (len <= 0) {
kfree(cf_name->name);
cf_name->name = NULL;
+ return;
}
+ cf_name->len = (unsigned) len;
+
}
#endif