From ead710b7d82dc9e8184e10871c155a3ed8b3f673 Mon Sep 17 00:00:00 2001 From: Chao Yu Date: Tue, 14 Nov 2017 19:28:42 +0800 Subject: [PATCH] f2fs: deny accessing encryption policy if encryption is off This patch adds missing feature check in encryption ioctl interface. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim --- fs/f2fs/file.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 41a6f1f70416..25038cfc9217 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1928,6 +1928,9 @@ static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) { struct inode *inode = file_inode(filp); + if (!f2fs_sb_has_crypto(inode->i_sb)) + return -EOPNOTSUPP; + f2fs_update_time(F2FS_I_SB(inode), REQ_TIME); return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); @@ -1935,6 +1938,8 @@ static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) { + if (!f2fs_sb_has_crypto(file_inode(filp)->i_sb)) + return -EOPNOTSUPP; return fscrypt_ioctl_get_policy(filp, (void __user *)arg); }