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authorChao Yu <chao2.yu@samsung.com>2014-03-22 06:59:45 (GMT)
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2014-04-01 09:54:24 (GMT)
commit6e452d69d421e10e99446c6de16a19604149c40f (patch)
tree78236f48ae6d645bb9a918181e06ce8f53ae8aa8 /fs/f2fs
parentdf0f8dc0e154de13e3a54846f384b674dd557c85 (diff)
downloadlinux-6e452d69d421e10e99446c6de16a19604149c40f.tar.xz
f2fs: avoid unneeded lookup when xattr name length is too long
In f2fs_setxattr we have limit this attribute name length, so we should also check it in f2fs_getxattr to avoid useless lookup caused by invalid name length. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/xattr.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index 0121e45..503c245 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -407,6 +407,8 @@ int f2fs_getxattr(struct inode *inode, int name_index, const char *name,
if (name == NULL)
return -EINVAL;
name_len = strlen(name);
+ if (name_len > F2FS_NAME_LEN)
+ return -ERANGE;
base_addr = read_all_xattrs(inode, NULL);
if (!base_addr)