tests/qemu-iotests/128

   1 #!/usr/bin/env 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 status=1        # failure is the default!
  28
  29 devname="eiodev$$"
  30 sudo=""
  31
  32 _sudo_qemu_io_wrapper()
  33 {
  34     (exec $sudo "$QEMU_IO_PROG" $QEMU_IO_OPTIONS "$@")
  35 }
  36
  37 _setup_eiodev()
  38 {
  39         # This test should either be run as root or with passwordless sudo
  40         for cmd in "" "sudo -n"; do
  41                 echo "0 $((1024 * 1024 * 1024 / 512)) error" | \
  42                         $cmd dmsetup create "$devname" 2>/dev/null
  43                 if [ "$?" -eq 0 ]; then
  44                         sudo="$cmd"
  45                         return
  46                 fi
  47         done
  48         _notrun "root privileges required to run dmsetup"
  49 }
  50
  51 _cleanup_eiodev()
  52 {
  53         for cmd in "" "sudo -n"; do
  54                 $cmd dmsetup remove "$devname" 2>/dev/null
  55                 if [ "$?" -eq 0 ]; then
  56                         return
  57                 fi
  58         done
  59 }
  60
  61 _cleanup()
  62 {
  63         _cleanup_eiodev
  64 }
  65 trap "_cleanup; exit \$status" 0 1 2 3 15
  66
  67 # get standard environment, filters and checks
  68 . ./common.rc
  69 . ./common.filter
  70
  71 _supported_fmt raw
  72 _supported_proto file
  73 _supported_os Linux
  74
  75 _setup_eiodev
  76
  77 TEST_IMG="/dev/mapper/$devname"
  78
  79 echo
  80 echo "== reading from error device =="
  81 # Opening image should succeed but the read operation should fail
  82 _sudo_qemu_io_wrapper --format "$IMGFMT" --nocache \
  83                       -c "read 0 65536" "$TEST_IMG" \
  84     | _filter_qemu_io
  85
  86 # success, all done
  87 echo "*** done"
  88 rm -f $seq.full
  89 status=0