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#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2016 Red Hat Inc. All Rights Reserved.
#
# FS QA Test 410
#
# Test mount shared subtrees, verify the state transition when use:
# --make-shared
# --make-slave
# --make-private
# --make-unbindable
#
# ------------------------------------------------------------------------
# | |make-shared | make-slave | make-private |make-unbindab|
# --------------|------------|--------------|--------------|-------------|
# |shared |shared |*slave/private| private | unbindable |
# | | | | | |
# |-------------|------------|--------------|--------------|-------------|
# |slave |shared | **slave | private | unbindable |
# | |and slave | | | |
# |-------------|------------|--------------|--------------|-------------|
# |shared |shared | slave | private | unbindable |
# |and slave |and slave | | | |
# |-------------|------------|--------------|--------------|-------------|
# |private |shared | **private | private | unbindable |
# |-------------|------------|--------------|--------------|-------------|
# |unbindable |shared |**unbindable | private | unbindable |
# ------------------------------------------------------------------------
#
. ./common/preamble
_begin_fstest auto quick mount
# Override the default cleanup function.
_cleanup()
{
cd /
rm -f $tmp.*
_clear_mount_stack
# make sure there's no bug cause dentry isn't be freed
rm -rf $MNTHEAD
}
# Import common functions.
. ./common/filter
# real QA test starts here
_supported_fs generic
_require_test
_require_scratch
_require_local_device $SCRATCH_DEV
fs_stress()
{
local target=$1
$FSSTRESS_PROG -z -n 50 -p 3 \
-f creat=5 \
-f mkdir=5 \
-f link=2 \
-f rename=1 \
-f rmdir=2 \
-f unlink=1 \
-f symlink=1 \
-f write=1 \
-f read=1 \
-f chown=1 \
-f getdents=1 \
-f fiemap=1 \
-d $target >/dev/null
sync
}
# prepare some mountpoint dir
MNTHEAD=$TEST_DIR/$seq
rm -rf $MNTHEAD
mkdir $MNTHEAD 2>>$seqres.full
mpA=$MNTHEAD/"$$"_mpA
mpB=$MNTHEAD/"$$"_mpB
mpC=$MNTHEAD/"$$"_mpC
find_mnt()
{
echo "------"
findmnt -n -o TARGET,SOURCE $SCRATCH_DEV | \
sed -e "s;$mpA;mpA;g" \
-e "s;$mpB;mpB;g" \
-e "s;$mpC;mpC;g" | \
_filter_spaces | _filter_testdir_and_scratch | sort
echo "======"
}
start_test()
{
local type=$1
_scratch_mkfs >$seqres.full 2>&1
_get_mount -t $FSTYP $SCRATCH_DEV $MNTHEAD
$MOUNT_PROG --make-"${type}" $MNTHEAD
mkdir $mpA $mpB $mpC
}
end_test()
{
_clear_mount_stack
rm -rf $mpA $mpB $mpC
}
run()
{
# command include make-shared/slave/private/unbindable
local cmd=$1
# orginal status include shared/slave/shared&slave/private/unbindable
local orgs="$2"
# bind anything on un-shared dest will keep the source type
# So use un-shared dest at here
start_test private
echo "make-$cmd a $orgs mount"
_get_mount -t $FSTYP $SCRATCH_DEV $mpA
mkdir -p $mpA/dir 2>/dev/null
$MOUNT_PROG --make-shared $mpA
# prepare the original status on mpB
_get_mount --bind $mpA $mpB
# shared&slave status need to do make-slave then make-shared
# two operations.
for t in $orgs; do
$MOUNT_PROG --make-"$t" $mpB
done
# "before" for prepare and check original status
# "after" for check the impact of make-$cmd command
for i in before after; do
echo "$i make-$cmd run on $orgs"
# maybe unbindable at here
_get_mount --bind $mpB $mpC 2>/dev/null
if [ $? -ne 0 ];then
find_mnt
else
for m in $mpA $mpB $mpC; do
_get_mount -t $FSTYP $SCRATCH_DEV $m/dir
fs_stress $m/dir
find_mnt
_put_mount
done
_put_mount # umount C
fi
if [ "$i" = "before" ];then
$MOUNT_PROG --make-"${cmd}" $mpB
fi
done
end_test
}
do_test()
{
# operation original_status
run shared shared
run shared slave
run shared "slave shared"
run shared private
run shared unbindable
run slave shared
run slave slave
run slave "slave shared"
run slave private
run slave unbindable
run private shared
run private slave
run private "slave shared"
run private private
run private unbindable
run unbindable shared
run unbindable slave
run unbindable "slave shared"
run unbindable private
run unbindable unbindable
}
do_test
# success, all done
status=0
exit
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