tests/generic/409

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2016 Red Hat Inc.  All Rights Reserved.
   4 #
   5 # FS QA Test 409
   6 #
   7 # Test mount shared subtrees, verify the bind semantics:
   8 #
   9 # ---------------------------------------------------------------------------
  10 # |         BIND MOUNT OPERATION                                            |
  11 # |**************************************************************************
  12 # |source(A)->| shared       |       private  |       slave    | unbindable |
  13 # | dest(B)  |               |                |                |            |
  14 # |   |      |               |                |                |            |
  15 # |   v      |               |                |                |            |
  16 # |**************************************************************************
  17 # |  shared  | shared        |     shared     | shared & slave |  invalid   |
  18 # |          |               |                |                |            |
  19 # |non-shared| shared        |      private   |      slave     |  invalid   |
  20 # ***************************************************************************
  21 #
  22 . ./common/preamble
  23 _begin_fstest auto quick mount
  24
  25 # Override the default cleanup function.
  26 _cleanup()
  27 {
  28         cd /
  29         rm -f $tmp.*
  30         _clear_mount_stack
  31         # make sure there's no bug cause dentry isn't be freed
  32         rm -rf $MNTHEAD
  33 }
  34
  35 # Import common functions.
  36 . ./common/filter
  37
  38 # real QA test starts here
  39 _supported_fs generic
  40 _require_test
  41 _require_scratch
  42 _require_local_device $SCRATCH_DEV
  43
  44 fs_stress()
  45 {
  46         local target=$1
  47
  48         $FSSTRESS_PROG -z -n 50 -p 3 \
  49                        -f creat=5 \
  50                        -f mkdir=5 \
  51                        -f link=2 \
  52                        -f rename=1 \
  53                        -f rmdir=2 \
  54                        -f unlink=1 \
  55                        -f symlink=1 \
  56                        -f write=1 \
  57                        -f read=1 \
  58                        -f chown=1 \
  59                        -f getdents=1 \
  60                        -f fiemap=1 \
  61                        -d $target >/dev/null
  62         sync
  63 }
  64
  65 # prepare some mountpoint dir
  66 MNTHEAD=$TEST_DIR/$seq
  67 rm -rf $MNTHEAD
  68 mkdir $MNTHEAD 2>>$seqres.full
  69 mpA=$MNTHEAD/"$$"_mpA
  70 mpB=$MNTHEAD/"$$"_mpB
  71 mpC=$MNTHEAD/"$$"_mpC
  72 mpD=$MNTHEAD/"$$"_mpD
  73
  74 find_mnt()
  75 {
  76         echo "------"
  77         findmnt -n -o TARGET,SOURCE $SCRATCH_DEV | \
  78                 sed -e "s;$mpA;mpA;g" \
  79                     -e "s;$mpB;mpB;g" \
  80                     -e "s;$mpC;mpC;g" \
  81                     -e "s;$mpD;mpD;g" | \
  82                 _filter_spaces | _filter_testdir_and_scratch | sort
  83         echo "======"
  84 }
  85
  86 start_test()
  87 {
  88         local type=$1
  89
  90         _scratch_mkfs >$seqres.full 2>&1
  91         _get_mount -t $FSTYP $SCRATCH_DEV $MNTHEAD
  92         $MOUNT_PROG --make-"${type}" $MNTHEAD
  93         mkdir $mpA $mpB $mpC $mpD
  94 }
  95
  96 end_test()
  97 {
  98         _clear_mount_stack
  99         rm -rf $mpA $mpB $mpC $mpD
 100 }
 101
 102 bind_run()
 103 {
 104         local source=$1
 105         local dest=$2
 106
 107         start_test $dest
 108
 109         echo "bind $source on $dest"
 110         _get_mount -t $FSTYP $SCRATCH_DEV $mpA
 111         mkdir -p $mpA/dir 2>/dev/null
 112         $MOUNT_PROG --make-shared $mpA
 113         _get_mount --bind $mpA $mpB
 114         $MOUNT_PROG --make-"$source" $mpB
 115         # maybe unbindable at here
 116         _get_mount --bind $mpB $mpC 2>/dev/null
 117         if [ $? -ne 0 ]; then
 118                 find_mnt
 119                 end_test
 120                 return 0
 121         fi
 122         _get_mount --bind $mpC $mpD
 123         for m in $mpA $mpB $mpC $mpD; do
 124                 _get_mount -t $FSTYP $SCRATCH_DEV $m/dir
 125                 fs_stress $m/dir
 126                 find_mnt
 127                 _put_mount
 128         done
 129
 130         end_test
 131 }
 132
 133 bind_test()
 134 {
 135         #        source     dest
 136         bind_run shared     shared
 137         bind_run slave      shared
 138         bind_run private    shared
 139         bind_run unbindable shared
 140
 141         bind_run shared     slave
 142         bind_run slave      slave
 143         bind_run private    slave
 144         bind_run unbindable slave
 145
 146         bind_run shared     private
 147         bind_run slave      private
 148         bind_run private    private
 149         bind_run unbindable private
 150 }
 151
 152 bind_test
 153
 154 # success, all done
 155 status=0
 156 exit