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Diffstat (limited to 'fs/btrfs/ioctl.c')
-rw-r--r--fs/btrfs/ioctl.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index f1c9bb4079ed..7cc2e8e075b4 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -964,6 +964,15 @@ static noinline int btrfs_ioctl_snap_create(struct file *file,
964 name = async_vol_args->name; 964 name = async_vol_args->name;
965 fd = async_vol_args->fd; 965 fd = async_vol_args->fd;
966 async_vol_args->name[BTRFS_SNAPSHOT_NAME_MAX] = '\0'; 966 async_vol_args->name[BTRFS_SNAPSHOT_NAME_MAX] = '\0';
967
968 ret = btrfs_ioctl_snap_create_transid(file, name, fd,
969 subvol, &transid);
970
971 if (ret == 0 &&
972 copy_to_user(arg +
973 offsetof(struct btrfs_ioctl_async_vol_args,
974 transid), &transid, sizeof(transid)))
975 ret = -EFAULT;
967 } else { 976 } else {
968 vol_args = memdup_user(arg, sizeof(*vol_args)); 977 vol_args = memdup_user(arg, sizeof(*vol_args));
969 if (IS_ERR(vol_args)) 978 if (IS_ERR(vol_args))
@@ -971,16 +980,9 @@ static noinline int btrfs_ioctl_snap_create(struct file *file,
971 name = vol_args->name; 980 name = vol_args->name;
972 fd = vol_args->fd; 981 fd = vol_args->fd;
973 vol_args->name[BTRFS_PATH_NAME_MAX] = '\0'; 982 vol_args->name[BTRFS_PATH_NAME_MAX] = '\0';
974 }
975 983
976 ret = btrfs_ioctl_snap_create_transid(file, name, fd, 984 ret = btrfs_ioctl_snap_create_transid(file, name, fd,
977 subvol, &transid); 985 subvol, NULL);
978
979 if (!ret && async) {
980 if (copy_to_user(arg +
981 offsetof(struct btrfs_ioctl_async_vol_args,
982 transid), &transid, sizeof(transid)))
983 return -EFAULT;
984 } 986 }
985 987
986 kfree(vol_args); 988 kfree(vol_args);