tests/test-checkwrite-bounds.sh

   1 #!/usr/bin/env bash
   2 # nbdkit
   3 # Copyright (C) 2020-2022 Red Hat Inc.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
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  10 # notice, this list of conditions and the following disclaimer.
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  12 # * Redistributions in binary form must reproduce the above copyright
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  17 # used to endorse or promote products derived from this software without
  18 # specific prior written permission.
  19 #
  20 # THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
  21 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  23 # PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
  24 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  30 # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31 # SUCH DAMAGE.
  32
  33 # Regression test for an earlier bug seen in checkwrite filter.
  34 # https://listman.redhat.com/archives/libguestfs/2022-July/029496.html
  35
  36 source ./functions.sh
  37 set -e
  38 set -x
  39
  40 requires_run
  41 requires_filter checkwrite
  42 requires nbdsh --version
  43 requires_nbdsh_uri
  44 requires dd iflag=count_bytes </dev/null
  45
  46 nbdkit -U - sh - --filter=checkwrite <<'EOF' \
  47        --run 'nbdsh -u "$uri" -c "h.zero (655360, 262144, 0)"'
  48 case "$1" in
  49   get_size) echo 1048576 ;;
  50   pread) dd if=/dev/zero count=$3 iflag=count_bytes ;;
  51   can_extents) exit 0 ;;
  52   extents)
  53     echo 0 262144 3
  54     echo 262144 131072 0
  55     echo 393216 655360 3
  56   ;;
  57   *) exit 2 ;;
  58 esac
  59 EOF