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f2fs: deny accessing encryption policy if encryption is off 

This patch adds missing feature check in encryption ioctl interface.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2017-11-14 19:28:42 +08:00 committed by Jaegeuk Kim
parent 812c60564c
commit ead710b7d8
1 changed files with 5 additions and 0 deletions
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5
fs/f2fs/file.c
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@ -1928,6 +1928,9 @@ static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
{ {
struct inode *inode = file_inode(filp); 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); f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
return fscrypt_ioctl_set_policy(filp, (const void __user *)arg); 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) 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); return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
} }