diff options
| -rw-r--r-- | fs/f2fs/namei.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index df315dcdd35d..1856d5ecd809 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -91,7 +91,14 @@ static int is_multimedia_file(const unsigned char *s, const char *sub) size_t slen = strlen(s); size_t sublen = strlen(sub); - if (sublen > slen) + /* + * filename format of multimedia file should be defined as: + * "filename + '.' + extension". + */ + if (slen < sublen + 2) + return 0; + + if (s[slen - sublen - 1] != '.') return 0; return !strncasecmp(s + slen - sublen, sub, sublen); |