From: Eric Biggers Date: Sat, 14 Mar 2020 20:50:50 +0000 (-0700) Subject: ext4: wire up FS_IOC_GET_ENCRYPTION_NONCE X-Git-Tag: v5.7-rc1~158^2~2 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=7ec9f3b47aba0fe715bf3472ed80e91c37970363;p=users%2Fjedix%2Flinux-maple.git 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. Link: https://lore.kernel.org/r/20200314205052.93294-3-ebiggers@kernel.org Reviewed-by: Theodore Ts'o Signed-off-by: Eric Biggers --- diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index a0ec750018dd3..0c1d1720cf1ae 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)) @@ -1370,6 +1375,7 @@ 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: