test/units/TEST-17-UDEV.09.sh

   1 #!/usr/bin/env bash
   2 # SPDX-License-Identifier: LGPL-2.1-or-later
   3 set -ex
   4 set -o pipefail
   5
   6 # shellcheck source=test/units/util.sh
   7 . "$(dirname "$0")"/util.sh
   8
   9 # This is a test for issue #24987.
  10
  11 mkdir -p /run/udev/rules.d/
  12 cat >/run/udev/rules.d/50-testsuite.rules <<EOF
  13 SUBSYSTEM!="mem", GOTO="test-end"
  14 KERNEL!="null", GOTO="test-end"
  15 ACTION=="remove", GOTO="test-end"
  16
  17 # add 100 * 100byte of properties
  18 $(for i in {1..100}; do printf 'ENV{XXX%03i}="0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789"\n' "$i"; done)
  19
  20 LABEL="test-end"
  21 EOF
  22
  23 udevadm control --reload
  24
  25 TMPDIR=$(mktemp -d -p /tmp udev-tests.XXXXXX)
  26 SYSTEMD_LOG_LEVEL=debug udevadm monitor --udev --property --subsystem-match=mem >"$TMPDIR"/monitor.txt 2>&1 &
  27 KILL_PID="$!"
  28
  29 FOUND=
  30 for _ in {1..40}; do
  31     if grep -F 'UDEV - the event which udev sends out after rule processing' "$TMPDIR"/monitor.txt; then
  32         FOUND=1
  33         break
  34     fi
  35     sleep .5
  36 done
  37 [[ -n "$FOUND" ]]
  38
  39 udevadm trigger --verbose --settle --action add /dev/null
  40
  41 FOUND=
  42 for _ in {1..40}; do
  43     if ! grep -e 'UDEV *\[[0-9.]*\] *add *\/devices\/virtual\/mem\/null (mem)' "$TMPDIR"/monitor.txt; then
  44         sleep .5
  45         continue
  46     fi
  47
  48     FOUND=1
  49     for i in {1..100}; do
  50         if ! grep -F "$(printf 'XXX%03i=0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789' "$i")" "$TMPDIR"/monitor.txt; then
  51             FOUND=
  52             break
  53         fi
  54     done
  55     if [[ -n "$FOUND" ]]; then
  56         break;
  57     fi
  58
  59     sleep .5
  60 done
  61 [[ -n "$FOUND" ]]
  62
  63 # cleanup
  64 rm -f /run/udev/rules.d/50-testsuite.rules
  65 udevadm control --reload
  66
  67 kill "$KILL_PID"
  68 rm -rf "$TMPDIR"
  69
  70 exit 0