tests/ls/readdir-mountpoint-inode

   1 #!/bin/sh
   2 # ensure that ls -i works also for mount points
   3
   4 # Copyright (C) 2009-2012 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 . "${srcdir=.}/init.sh"; path_prepend_ ../src
  20 print_ver_ ls
  21
  22 # We use --local here so as to not activate
  23 # potentially very many remote mounts.
  24 mount_points=$(df --local -P 2>&1 | sed -n 's,.*[0-9]% \(/.\),\1,p')
  25 test -z "$mount_points" &&
  26    skip_ "this test requires a non-root mount point"
  27
  28 # Given e.g., /dev/shm, produce the list of GNU ls options that
  29 # let us list just that entry using readdir data from its parent:
  30 # ls -i -I '[^s]*' -I 's[^h]*' -I 'sh[^m]*' -I 'shm?*' -I '.?*' \
  31 # -I '?' -I '??' /dev
  32
  33 ls_ignore_options()
  34 {
  35   name=$1
  36   opts="-I '.?*' -I '$name?*'"
  37   while :; do
  38     glob=$(echo "$name"|sed 's/\(.*\)\(.\)$/\1[^\2]*/')
  39     opts="$opts -I '$glob'"
  40     name=$(echo "$name"|sed 's/.$//')
  41     test -z "$name" && break
  42     glob=$(echo "$name"|sed 's/./?/g')
  43     opts="$opts -I '$glob'"
  44   done
  45   echo "$opts"
  46 }
  47
  48 inode_via_readdir()
  49 {
  50   mount_point=$1
  51   base=$(basename $mount_point)
  52   case $base in
  53     .*) skip_ 'mount point component starts with "."' ;;
  54     *[*?]*) skip_ 'mount point component contains "?" or "*"' ;;
  55   esac
  56   opts=$(ls_ignore_options "$base")
  57   parent_dir=$(dirname $mount_point)
  58   eval "ls -i $opts $parent_dir" | sed 's/ .*//'
  59 }
  60
  61 for dir in $mount_points; do
  62   readdir_inode=$(inode_via_readdir $dir)
  63   test $? = 77 && continue
  64   stat_inode=$(timeout 1 stat --format=%i $dir)
  65   # If stat fails or says the inode is 0, skip $dir.
  66   case $stat_inode in 0|'') continue;; esac
  67   test "$readdir_inode" = "$stat_inode" || fail=1
  68 done
  69
  70 Exit $fail