tests/ts/lsns/filter

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2024 Masatake YAMATO <yamato@redhat.com>
   4 #
   5 # This file is part of util-linux.
   6 #
   7 # This file 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 file 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 TS_TOPDIR="${0%/*}/../.."
  18 TS_DESC="-Q, --filter option"
  19
  20 . "$TS_TOPDIR"/functions.sh
  21 # for $EPERM
  22 . "$TS_TOPDIR"/ts/lsfd/lsfd-functions.bash
  23
  24 ts_init "$*"
  25
  26 ts_check_test_command "$TS_CMD_LSNS"
  27 ts_check_test_command "$TS_CMD_LSFD"
  28
  29 ts_check_test_command "$TS_HELPER_MKFDS"
  30
  31 # unshare(2) used in userns factory of test_mkfds reports "Invalid argument".
  32 ts_skip_qemu_user
  33
  34 ts_cd "$TS_OUTDIR"
  35 PID=
  36 FD=4
  37
  38 {
  39     coproc MKFDS { "$TS_HELPER_MKFDS" --comm ABC userns $FD; }
  40     if read -u ${MKFDS[0]} PID; then
  41         expr="PID == \"${PID}\" and ASSOC == \"user\""
  42         inode=$(${TS_CMD_LSFD} -n --raw -o INODE -Q "${expr}")
  43         for opt in -Q --filter; do
  44             pid=$(${TS_CMD_LSNS} -n --raw -o PID "$opt" "NS == $inode && NPROCS == 1")
  45             if [[ "$pid" = "$PID" ]]; then
  46                 echo  "$opt: pid == PID"
  47             else
  48                 echo "$opt: pid != PID"
  49                 echo expr: "${expr}"
  50                 ${TS_CMD_LSFD} -n --raw -o INODE -Q "${expr}"
  51                 echo inode: "${inode}"
  52                 ${TS_CMD_LSNS} -n --raw -o PID -Q "NS == $inode && NPROCS == 1"
  53                 echo pid: "${pid}"
  54                 echo PID: "${PID}"
  55             fi
  56         done
  57         echo DONE >&"${MKFDS[1]}"
  58     fi
  59     wait "${MKFDS_PID}"
  60 } > $TS_OUTPUT 2>&1
  61 if [ "$?" == "$EPERM" ]; then
  62     ts_skip "unshare(2) is not permitted on this platform"
  63 fi
  64 ts_finalize