Messages in this thread Patch in this message | | | From | Chao Yu <> | Subject | [PATCH] f2fs: deny accessing encryption policy if encryption is off | Date | Tue, 14 Nov 2017 19:28:42 +0800 |
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This patch adds missing feature check in encryption ioctl interface.
Signed-off-by: Chao Yu <yuchao0@huawei.com> --- 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); } -- 2.15.0.55.gc2ece9dc4de6
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