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#!/bin/sh
# ensure that ls -i works also for mount points
# Copyright (C) 2009-2012 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
. "${srcdir=.}/init.sh"; path_prepend_ ../src
print_ver_ ls
# We use --local here so as to not activate
# potentially very many remote mounts.
mount_points=$(df --local -P 2>&1 | sed -n 's,.*[0-9]% \(/.\),\1,p')
test -z "$mount_points" &&
skip_ "this test requires a non-root mount point"
# Given e.g., /dev/shm, produce the list of GNU ls options that
# let us list just that entry using readdir data from its parent:
# ls -i -I '[^s]*' -I 's[^h]*' -I 'sh[^m]*' -I 'shm?*' -I '.?*' \
# -I '?' -I '??' /dev
ls_ignore_options()
{
name=$1
opts="-I '.?*' -I '$name?*'"
while :; do
glob=$(echo "$name"|sed 's/\(.*\)\(.\)$/\1[^\2]*/')
opts="$opts -I '$glob'"
name=$(echo "$name"|sed 's/.$//')
test -z "$name" && break
glob=$(echo "$name"|sed 's/./?/g')
opts="$opts -I '$glob'"
done
echo "$opts"
}
inode_via_readdir()
{
mount_point=$1
base=$(basename $mount_point)
case $base in
.*) skip_ 'mount point component starts with "."' ;;
*[*?]*) skip_ 'mount point component contains "?" or "*"' ;;
esac
opts=$(ls_ignore_options "$base")
parent_dir=$(dirname $mount_point)
eval "ls -i $opts $parent_dir" | sed 's/ .*//'
}
for dir in $mount_points; do
readdir_inode=$(inode_via_readdir $dir)
test $? = 77 && continue
stat_inode=$(timeout 1 stat --format=%i $dir)
# If stat fails or says the inode is 0, skip $dir.
case $stat_inode in 0|'') continue;; esac
test "$readdir_inode" = "$stat_inode" || fail=1
done
Exit $fail
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