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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2016-12-29 01:31:15 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-12 09:51:26 (GMT) |
| commit | ec86c1ca8fbb3e6bfb6f67b3b3697600fa5bb0d7 (patch) | |
| tree | 1ffd5d804ad4969abdc418a9243d6d8d793a0a4e /fs | |
| parent | 48d7b5a8879002aeea63201d8fab598848cce0dd (diff) | |
| download | linux-ec86c1ca8fbb3e6bfb6f67b3b3697600fa5bb0d7.tar.xz | |
f2fs: don't allow encrypted operations without keys
commit 363fa4e078cbdc97a172c19d19dc04b41b52ebc8 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -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 489fa0d..08d7dc9 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) || |