tests/ls/stat-free-color

   1 #!/bin/sh
   2 # Show that --color need not use stat, as long as we have d_type support.
   3
   4 # Copyright (C) 2011-2012 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 <http://www.gnu.org/licenses/>.
  18
  19 . "${srcdir=.}/init.sh"; path_prepend_ ../src
  20 print_ver_ ls
  21 require_strace_ stat
  22 require_dirent_d_type_
  23
  24 for i in 1 2 3; do
  25   ln -s nowhere dangle-$i || framework_failure_
  26 done
  27
  28 # Disable enough features via LS_COLORS so that ls --color
  29 # can do its job without calling stat (other than the obligatory
  30 # one-call-per-command-line argument).
  31 cat <<EOF > color-without-stat || framework_failure_
  32 RESET 0
  33 DIR 01;34
  34 LINK 01;36
  35 FIFO 40;33
  36 SOCK 01;35
  37 DOOR 01;35
  38 BLK 40;33;01
  39 CHR 40;33;01
  40 ORPHAN 00
  41 SETUID 00
  42 SETGID 00
  43 CAPABILITY 00
  44 STICKY_OTHER_WRITABLE 00
  45 OTHER_WRITABLE 00
  46 STICKY 00
  47 EXEC 00
  48 MULTIHARDLINK 00
  49 EOF
  50 eval $(dircolors -b color-without-stat)
  51
  52 # The system may perform additional stat-like calls before main.
  53 # To avoid counting those, first get a baseline count by running
  54 # ls with only the --help option.  Then, compare that with the
  55 # invocation under test.
  56 strace -o log-help -e stat,lstat,stat64,lstat64 ls --help >/dev/null || fail=1
  57 n_lines_help=$(wc -l < log-help)
  58
  59 strace -o log -e stat,lstat,stat64,lstat64 ls --color=always . || fail=1
  60 n_lines=$(wc -l < log)
  61
  62 n_stat=$(expr $n_lines - $n_lines_help)
  63
  64 # Expect one or two stat calls.
  65 case $n_stat in
  66   1) ;;
  67   *) fail=1; head -n30 log* ;;
  68 esac
  69
  70 Exit $fail