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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-12-28 17:31:15 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-01-29 12:46:01 +0900 |
| commit | 363fa4e078cbdc97a172c19d19dc04b41b52ebc8 (patch) | |
| tree | df0526f0b9d00fda3df98b94bcb6f66c8ec691e7 /fs/f2fs/namei.c | |
| parent | 26a28a0c1eb756ba18bfb1f93309c4b4406b9cd9 (diff) | |
| download | linux-363fa4e078cbdc97a172c19d19dc04b41b52ebc8.tar.gz linux-363fa4e078cbdc97a172c19d19dc04b41b52ebc8.tar.bz2 linux-363fa4e078cbdc97a172c19d19dc04b41b52ebc8.zip | |
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.c | 12 |
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) || |