From 827b96c1721398bc6162be2cb7e2facc711a3d73 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Sat, 14 Mar 2020 13:50:50 -0700 Subject: [PATCH] FROMLIST: ext4: wire up FS_IOC_GET_ENCRYPTION_NONCE This new ioctl retrieves a file's encryption nonce, which is useful for testing. See the corresponding fs/crypto/ patch for more details. Bug: 151100202 Link: https://lore.kernel.org/r/20200314205052.93294-3-ebiggers@kernel.org Change-Id: I85350aed66285b92444d37c8cd840fb03d2ca25d Signed-off-by: Eric Biggers --- fs/ext4/ioctl.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index ef280d7249ca..a05916c5cfbc 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -1210,6 +1210,11 @@ resizefs_out: return -EOPNOTSUPP; return fscrypt_ioctl_get_key_status(filp, (void __user *)arg); + case FS_IOC_GET_ENCRYPTION_NONCE: + if (!ext4_has_feature_encrypt(sb)) + return -EOPNOTSUPP; + return fscrypt_ioctl_get_nonce(filp, (void __user *)arg); + case EXT4_IOC_CLEAR_ES_CACHE: { if (!inode_owner_or_capable(inode)) @@ -1369,6 +1374,7 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case FS_IOC_REMOVE_ENCRYPTION_KEY: case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: case FS_IOC_GET_ENCRYPTION_KEY_STATUS: + case FS_IOC_GET_ENCRYPTION_NONCE: case EXT4_IOC_SHUTDOWN: case FS_IOC_GETFSMAP: case FS_IOC_ENABLE_VERITY: