From 7732c26ac3925e2aebfa84e14673240201ddc9de Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Mon, 5 Sep 2016 12:28:27 +0800 Subject: [PATCH] f2fs: fix to detect temporary name of multimedia file Some applications may create multimeida file with temporary name like '*.jpg.tmp' or '*.mp4.tmp', then rename to '*.jpg' or '*.mp4'. Now, f2fs can only detect multimedia filename with specified format: "filename + '.' + extension", so it will make f2fs missing to detect multimedia file with special temporary name, result in failing to set cold flag on file. This patch enhances detection flow for enabling lookup extension in the middle of temporary filename. Reported-by: Xue Liu Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/namei.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 73fa356f8fbb..bfcd9da9c2eb 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -91,18 +91,23 @@ static int is_multimedia_file(const unsigned char *s, const char *sub) { size_t slen = strlen(s); size_t sublen = strlen(sub); + int i; /* * filename format of multimedia file should be defined as: - * "filename + '.' + extension". + * "filename + '.' + extension + (optional: '.' + temp extension)". */ if (slen < sublen + 2) return 0; - if (s[slen - sublen - 1] != '.') - return 0; + for (i = 1; i < slen - sublen; i++) { + if (s[i] != '.') + continue; + if (!strncasecmp(s + i + 1, sub, sublen)) + return 1; + } - return !strncasecmp(s + slen - sublen, sub, sublen); + return 0; } /* -- 2.39.5