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authorJaegeuk Kim <jaegeuk@kernel.org>2016-12-29 04:31:15 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2017-01-29 06:46:01 +0300
commit363fa4e078cbdc97a172c19d19dc04b41b52ebc8 (patch)
treedf0526f0b9d00fda3df98b94bcb6f66c8ec691e7 /fs/f2fs/namei.c
parent26a28a0c1eb756ba18bfb1f93309c4b4406b9cd9 (diff)
downloadlinux-363fa4e078cbdc97a172c19d19dc04b41b52ebc8.tar.xz
f2fs: don't allow encrypted operations without keys
This patch fixes the renaming bug on encrypted filenames, which was pointed by (ext4: don't allow encrypted operations without keys) Cc: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/namei.c')
-rw-r--r--fs/f2fs/namei.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 290a9d7060ef..0eda02253ffb 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -663,6 +663,12 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
bool is_old_inline = f2fs_has_inline_dentry(old_dir);
int err = -ENOENT;
+ if ((f2fs_encrypted_inode(old_dir) &&
+ !fscrypt_has_encryption_key(old_dir)) ||
+ (f2fs_encrypted_inode(new_dir) &&
+ !fscrypt_has_encryption_key(new_dir)))
+ return -ENOKEY;
+
if ((old_dir != new_dir) && f2fs_encrypted_inode(new_dir) &&
!fscrypt_has_permitted_context(new_dir, old_inode)) {
err = -EPERM;
@@ -843,6 +849,12 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
int old_nlink = 0, new_nlink = 0;
int err = -ENOENT;
+ if ((f2fs_encrypted_inode(old_dir) &&
+ !fscrypt_has_encryption_key(old_dir)) ||
+ (f2fs_encrypted_inode(new_dir) &&
+ !fscrypt_has_encryption_key(new_dir)))
+ return -ENOKEY;
+
if ((f2fs_encrypted_inode(old_dir) || f2fs_encrypted_inode(new_dir)) &&
(old_dir != new_dir) &&
(!fscrypt_has_permitted_context(new_dir, old_inode) ||