tests/qemu-iotests/128

   1 #!/bin/bash
   2 #
   3 # Test that opening O_DIRECT succeeds when image file I/O produces EIO
   4 #
   5 # Copyright (C) 2015 Red Hat, Inc.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 # creator
  22 owner=stefanha@redhat.com
  23
  24 seq=`basename $0`
  25 echo "QA output created by $seq"
  26
  27 here=`pwd`
  28 status=1        # failure is the default!
  29
  30 devname="eiodev$$"
  31 sudo=""
  32
  33 _sudo_qemu_io_wrapper()
  34 {
  35     (exec $sudo "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@")
  36 }
  37
  38 _setup_eiodev()
  39 {
  40         # This test should either be run as root or with passwordless sudo
  41         for cmd in "" "sudo -n"; do
  42                 echo "0 $((1024 * 1024 * 1024 / 512)) error" | \
  43                         $cmd dmsetup create "$devname" 2>/dev/null
  44                 if [ "$?" -eq 0 ]; then
  45                         sudo="$cmd"
  46                         return
  47                 fi
  48         done
  49         _notrun "root privileges required to run dmsetup"
  50 }
  51
  52 _cleanup_eiodev()
  53 {
  54         for cmd in "" "sudo -n"; do
  55                 $cmd dmsetup remove "$devname" 2>/dev/null
  56                 if [ "$?" -eq 0 ]; then
  57                         return
  58                 fi
  59         done
  60 }
  61
  62 _cleanup()
  63 {
  64         _cleanup_eiodev
  65 }
  66 trap "_cleanup; exit \$status" 0 1 2 3 15
  67
  68 # get standard environment, filters and checks
  69 . ./common.rc
  70 . ./common.filter
  71
  72 _supported_fmt raw
  73 _supported_proto file
  74 _supported_os Linux
  75
  76 _setup_eiodev
  77
  78 TEST_IMG="/dev/mapper/$devname"
  79
  80 echo
  81 echo "== reading from error device =="
  82 # Opening image should succeed but the read operation should fail
  83 _sudo_qemu_io_wrapper --format "$IMGFMT" --nocache \
  84                       -c "read 0 65536" "$TEST_IMG" \
  85     | _filter_qemu_io
  86
  87 # success, all done
  88 echo "*** done"
  89 rm -f $seq.full
  90 status=0