tests/ls/stat-vs-dirent

   1 #!/bin/sh
   2 # Ensure that d_ino (from ls -di) and st_ino (from stat --format=%i) match.
   3
   4 # Copyright (C) 2006-2010 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 if test "$VERBOSE" = yes; then
  20   set -x
  21   ls --version
  22 fi
  23
  24 . $srcdir/test-lib.sh
  25
  26
  27 root_dev_ino=`stat --format=%d-%i /`
  28 t=`pwd`
  29 while :; do
  30   ls -i1 "$t" > tmp
  31   if test $? = 0; then
  32     # Extract the inode number from the first line of output from ls -i1.
  33     # This value comes from dirent.d_ino, on systems with d_ino support.
  34     d_ino=`sed -n '1s/^ *\([0-9][0-9]*\) .*/\1/p;q' tmp`
  35
  36     # Extract the name of the corresponding directory entry.
  37     file=`sed -n '1s/^ *[0-9][0-9]*  *//p;q' tmp`
  38
  39     # Get its inode number (stat.st_ino) via stat(1)'s call to lstat.
  40     st_ino=`stat --format=%i "$t/$file"`
  41
  42     # Make sure that they are the same.
  43     # We know from experience that there may be mismatches on some
  44     # buggy file systems, at mount points.
  45     # Note that when a directory contains only entries whose names
  46     # start with ".", d_ino and file will both be empty.  In that case,
  47     # skip the test.
  48     if test -n "$d_ino" && test "$d_ino" != "$st_ino"; then
  49       echo "$0: test failed: $t/$file: d_ino($d_ino) != st_ino($st_ino)
  50         This may indicate a flaw in your kernel or file system implementation.
  51         The flaw isn't serious for coreutils, but it might break other tools,
  52         so you should report it to your operating system vendor." 1>&2
  53
  54       fail=1
  55       break
  56     fi
  57   fi
  58
  59   t=`(cd "$t/.."; pwd)`
  60   dev_ino=`stat --format=%d-%i "$t"`
  61   test $dev_ino = $root_dev_ino && break
  62 done
  63
  64 Exit $fail