tests/stty/stty.sh

   1 #!/bin/sh
   2 # Make sure stty can parse most of its options.
   3
   4 # Copyright (C) 1998-2024 Free Software Foundation, Inc.
   5
   6 # This program is free software: you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation, either version 3 of the License, or
   9 # (at your option) any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  18
  19 # Make sure there's a tty on stdin.
  20 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  21 print_ver_ stty
  22
  23 require_controlling_input_terminal_
  24 require_trap_signame_
  25 require_strace_ ioctl
  26
  27 trap '' TTOU # Ignore SIGTTOU
  28
  29 # Get the reversible settings from stty.c.
  30 stty_reversible_init_
  31
  32 saved_state=.saved-state
  33 stty --save > $saved_state || fail=1
  34 stty $(cat $saved_state) || fail=1
  35
  36 # This would segfault prior to sh-utils-2.0j.
  37 stty erase - || fail=1
  38
  39 # Ensure "immediate" and "wait" mode supported, with and without settings
  40 for mode in '-drain' 'drain'; do
  41   for opt in 'echo' ''; do
  42     stty "$mode" $opt || fail=1
  43   done
  44 done
  45
  46 # These would improperly ignore invalid options through coreutils 5.2.1.
  47 returns_ 1 stty -F 2>/dev/null || fail=1
  48 returns_ 1 stty -raw -F no/such/file 2>/dev/null || fail=1
  49 returns_ 1 stty -raw -a 2>/dev/null || fail=1
  50
  51 # Build a list of all boolean options stty accepts on this system.
  52 # Don't depend on terminal width.  Put each option on its own line,
  53 # remove all non-boolean ones, then remove any leading hyphens.
  54 sed_del='/^speed/d;/^rows/d;/^columns/d;/ = /d'
  55 options=$(stty -a | tr -s ';' '\n' | sed "s/^ //;$sed_del;s/-//g")
  56
  57 # Take them one at a time, with and without the leading '-'.
  58 for opt in $options; do
  59   # 'stty parenb' and 'stty -parenb' fail with this message
  60   # stty: standard input: unable to perform all requested operations
  61   # on Linux 2.2.0-pre4 kernels.  Also since around Linux 2.6.30
  62   # other serial control settings give the same error. So skip them.
  63   # Also on ppc*|sparc* glibc platforms 'icanon' gives the same error.
  64   # See: https://bugs.gnu.org/7228#14
  65   case $opt in
  66     parenb|parodd|cmspar) continue;;
  67     cstopb|crtscts|cdtrdsr|icanon) continue;;
  68   esac
  69
  70   # This is listed as supported on FreeBSD
  71   # but the ioctl returns ENOTTY.
  72   test $opt = extproc && continue
  73
  74   stty $opt || fail=1
  75
  76   # Likewise, 'stty -cread' would fail, so skip that, too.
  77   test $opt = cread && continue
  78   if stty_reversible_query_ "$opt" ; then
  79     stty -$opt || { fail=1; echo -$opt; }
  80   fi
  81 done
  82
  83 stty $(cat $saved_state)
  84
  85 # Ensure we validate options before accessing the device
  86 strace -o log1 -e ioctl stty --version || fail=1
  87 n_ioctl1=$(wc -l < log1) || framework_failure_
  88 returns_ 1 strace -o log2 -e ioctl stty -blahblah || fail=1
  89 n_ioctl2=$(wc -l < log2) || framework_failure_
  90 test "$n_ioctl1" = "$n_ioctl2" || fail=1
  91
  92 # Ensure we wrap output appropriately
  93 for W in $(seq 80 90); do
  94   output_width=$(COLUMNS="$W" stty -a | wc -L)
  95   test "$output_width" -le "$W" || fail=1
  96 done
  97
  98 Exit $fail