tests/ts/lsfd/lsfd-functions.bash

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2021 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
  18 # The exit-status used in a test target.
  19 readonly EPERM=18
  20 readonly ENOPROTOOPT=19
  21 readonly EPROTONOSUPPORT=20
  22 readonly EACCESS=21
  23
  24 function lsfd_wait_for_pausing {
  25         ts_check_prog "sleep"
  26
  27         local PID=$1
  28         until [[ $(ps --no-headers -ostat "${PID}") =~ S.* ]]; do
  29                 sleep 1
  30         done
  31 }
  32
  33 function lsfd_compare_dev {
  34     local LSFD=$1
  35     local FILE=$2
  36     local EXPR=$3
  37
  38     ts_check_prog "grep"
  39     ts_check_prog "expr"
  40     ts_check_prog "stat"
  41
  42     local DEV=$("${LSFD}" --raw -n -o DEV -Q "${EXPR}")
  43     echo 'DEV[RUN]:' $?
  44     local MAJ=${DEV%:*}
  45     local MIN=${DEV#*:}
  46     local DEVNUM=$(( ( MAJ << 8 ) + MIN ))
  47     local STAT_DEVNUM=$(stat -c "%d" "$FILE")
  48     echo 'STAT[RUN]:' $?
  49     if [ "${DEVNUM}" == "${STAT_DEVNUM}" ]; then
  50         echo 'DEVNUM[STR]:' 0
  51     else
  52         echo 'DEVNUM[STR]:' 1
  53         # Print more information for debugging
  54         echo 'DEV:' "${DEV}"
  55         echo 'MAJ:MIN' "${MAJ}:${MIN}"
  56         echo 'DEVNUM:' "${DEVNUM}"
  57         echo 'STAT_DEVNUM:' "${STAT_DEVNUM}"
  58     fi
  59 }
  60
  61 lsfd_strip_type_stream()
  62 {
  63     # lsfd changes the output of NAME column for a unix stream socket
  64     # whether the kernel reports it is a "UNIX-STREAM" socket or a
  65     # "UNIX" socket. For "UNIX", lsfd appends "type=stream" to the
  66     # NAME column. Let's delete the appended string before comparing.
  67     sed -e 's/ type=stream//'
  68 }
  69
  70 lsfd_make_state_connected()
  71 {
  72     # Newer kernels report the states of unix dgram sockets created by
  73     # sockerpair(2) are "connected" via /proc/net/unix though Older
  74     # kernels report "unconnected".
  75     #
  76     # Newer kernels report the states of unix dgram sockets already
  77     # connect(2)'ed are "connected", too.
  78     #
  79     # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=83301b5367a98c17ec0d76c7bc0ccdc3c7e7ad6d
  80     #
  81     # This rewriting adjusts the output of lsfd running on older kernels
  82     # to that on newer kernels.
  83     sed -e 's/state=unconnected/state=connected/'
  84 }
  85
  86 function lsfd_check_mkfds_factory
  87 {
  88         local FACTORY=$1
  89
  90         ts_check_test_command "$TS_HELPER_MKFDS"
  91         if ! "$TS_HELPER_MKFDS" --is-available "$FACTORY"; then
  92                 ts_skip "test_mkfds has no factory for $FACTORY"
  93         fi
  94 }