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#!/bin/bash
#
# Copyright (C) 2016 Stanislav Brabec <sbrabec@suse.cz>
#
# This file is part of util-linux.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This file is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
TS_TOPDIR="${0%/*}/../.."
TS_DESC="btrfs (fstab)"
. $TS_TOPDIR/functions.sh
ts_init "$*"
ts_check_test_command "$TS_CMD_MOUNT"
ts_check_test_command "$TS_CMD_UMOUNT"
ts_skip_nonroot
ts_check_losetup
ts_check_prog "mkfs.btrfs"
ts_check_prog "btrfs"
TS_MOUNTPOINT_ANY="$TS_MOUNTPOINT"
TS_MOUNTPOINT_CREATE="$TS_MOUNTPOINT-create"
TS_MOUNTPOINT_DEFAULT="$TS_MOUNTPOINT-default"
TS_MOUNTPOINT_SUBVOL="$TS_MOUNTPOINT-subvol"
TS_MOUNTPOINT_SUBVOLID="$TS_MOUNTPOINT-subvolid"
TS_MOUNTPOINT_BIND="$TS_MOUNTPOINT-bind"
ts_device_init 42
DEVICE=$TS_LODEV
[ -d "$TS_MOUNTPOINT_CREATE" ] || mkdir -p "$TS_MOUNTPOINT_CREATE"
[ -d "$TS_MOUNTPOINT_DEFAULT" ] || mkdir -p "$TS_MOUNTPOINT_DEFAULT"
[ -d "$TS_MOUNTPOINT_SUBVOL" ] || mkdir -p "$TS_MOUNTPOINT_SUBVOL"
[ -d "$TS_MOUNTPOINT_SUBVOLID" ] || mkdir -p "$TS_MOUNTPOINT_SUBVOLID"
[ -d "$TS_MOUNTPOINT_BIND" ] || mkdir -p "$TS_MOUNTPOINT_BIND"
mkfs.btrfs -d single -m single $DEVICE &> /dev/null || ts_die "Cannot make btrfs on $DEVICE"
$TS_CMD_MOUNT -o loop "$DEVICE" "$TS_MOUNTPOINT_CREATE"
pushd . >/dev/null
cd "$TS_MOUNTPOINT_CREATE"
mkdir -p d0/dd0/ddd0
cd ./d0/dd0/ddd0
touch file{1..5}
btrfs subvol create s1 >/dev/null
cd ./s1
touch file{1..5}
mkdir bind-point
mkdir -p d1/dd1/ddd1
cd ./d1/dd1/ddd1
btrfs subvol create s2 >/dev/null
DEFAULT_SUBVOLID=$(btrfs inspect rootid s2)
btrfs subvol set-default $DEFAULT_SUBVOLID . >/dev/null
NON_DEFAULT_SUBVOLID=$(btrfs subvol list "$TS_MOUNTPOINT_CREATE" | while read dummy id rest ; do if test $id = $DEFAULT_SUBVOLID ; then continue ; fi ; echo $id ; done)
cd ../../../..
mkdir -p d2/dd2/ddd2
cd ./d2/dd2/ddd2
btrfs subvol create s3 >/dev/null
mkdir -p s3/bind-mnt
popd >/dev/null
NON_DEFAULT_SUBVOL=d0/dd0/ddd0/d2/dd2/ddd2/s3
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_CREATE"
ts_init_subtest "btrfs"
# Tests with fs == btrfs
# mounting default subvolume, deep in the structure, without entry in fstab
ts_fstab_add "$DEVICE" "$TS_MOUNTPOINT_DEFAULT" "btrfs" ""
# mounting default subvolume, deep in the structure
ts_fstab_add "$DEVICE" "$TS_MOUNTPOINT_SUBVOL" "btrfs" "subvol=$NON_DEFAULT_SUBVOL"
# mounting non-default subvolume
ts_fstab_add "$DEVICE" "$TS_MOUNTPOINT_SUBVOLID" "btrfs" "subvolid=$NON_DEFAULT_SUBVOLID"
# test bind mount pointing to subvolume root
ts_fstab_add "$TS_MOUNTPOINT_SUBVOLID" "$TS_MOUNTPOINT_BIND" "auto" "bind"
$TS_CMD_MOUNT -a >> $TS_OUTPUT 2>&1
$TS_CMD_MOUNT -a >> $TS_OUTPUT 2>&1
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_BIND" >> $TS_OUTPUT 2>&1
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_DEFAULT" >> $TS_OUTPUT 2>&1
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_SUBVOL" >> $TS_OUTPUT 2>&1
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_SUBVOLID" >> $TS_OUTPUT 2>&1
# check that everything was unmounted
$TS_CMD_MOUNT | grep "$TS_MOUNTPOINT_ANY" >> $TS_OUTPUT 2>&1
ts_fstab_clean
ts_log "Success"
ts_finalize_subtest
ts_init_subtest "auto"
# Tests with fs == auto
# mounting default subvolume, deep in the structure, without entry in fstab
ts_fstab_add "$DEVICE" "$TS_MOUNTPOINT_DEFAULT" "auto" ""
# mounting default subvolume, deep in the structure
ts_fstab_add "$DEVICE" "$TS_MOUNTPOINT_SUBVOL" "auto" "subvol=$NON_DEFAULT_SUBVOL"
# mounting non-default subvolume
ts_fstab_add "$DEVICE" "$TS_MOUNTPOINT_SUBVOLID" "auto" "subvolid=$NON_DEFAULT_SUBVOLID"
# test bind mount pointing to subvolume sub-directory
ts_fstab_add "$TS_MOUNTPOINT_SUBVOL/bind-mnt" "$TS_MOUNTPOINT_BIND" "auto" "bind"
$TS_CMD_MOUNT -a >> $TS_OUTPUT 2>&1
$TS_CMD_MOUNT -a >> $TS_OUTPUT 2>&1
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_BIND" >> $TS_OUTPUT 2>&1
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_DEFAULT" >> $TS_OUTPUT 2>&1
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_SUBVOL" >> $TS_OUTPUT 2>&1
$TS_CMD_UMOUNT "$TS_MOUNTPOINT_SUBVOLID" >> $TS_OUTPUT 2>&1
# check that everything was unmounted
$TS_CMD_MOUNT | grep "$TS_MOUNTPOINT_ANY" >> $TS_OUTPUT 2>&1
ts_fstab_clean
ts_log "Success"
ts_finalize_subtest
ts_finalize
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