tests/ln/hard-to-sym.sh

   1 #!/bin/sh
   2 # Tests for ln -L/-P.
   3
   4 # Copyright (C) 2009-2017 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 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  20 print_ver_ ln
  21
  22
  23 # ===================================================
  24 # ensure -s silently overrides -L, -P
  25 touch a || framework_failure_
  26 ln -L -s a symlink1 || fail=1
  27 ln -P -s symlink1 symlink2 || fail=1
  28 ln -s -L -P symlink2 symlink3 || fail=1
  29
  30 # ===================================================
  31 # ensure that -L follows symlinks, and overrides -P
  32 if ln -P -L symlink3 hard-to-a; then
  33   ls=$(ls -lG hard-to-a)x
  34   case "$ls" in
  35     *'hard-to-ax') ;;
  36     *'hard-to-a -> '*x) fail=1 ;;
  37     *) framework_failure_ ;;
  38   esac
  39 else
  40   fail=1
  41 fi
  42
  43 # ===================================================
  44 # ensure that -P links (or at least duplicates) symlinks, and overrides -L
  45 if ln -L -P symlink3 hard-to-3; then
  46   ls=$(ls -lG hard-to-3)x
  47   case "$ls" in
  48     *'hard-to-3 -> symlink2x') ;;
  49     *'hard-to-3x') fail=1 ;;
  50     *'hard-to-3 -> '*x) fail=1 ;;
  51     *) framework_failure_ ;;
  52   esac
  53 else
  54   fail=1
  55 fi
  56
  57 # ===================================================
  58 # Create a hard link to a dangling symlink.
  59 ln -s /no-such-dir || framework_failure_
  60 ln -L no-such-dir hard-to-dangle 2>err && fail=1
  61 case $(cat err) in
  62   *" failed to access 'no-such-dir'":*) ;;
  63   *) fail=1 ;;
  64 esac
  65 ln -P no-such-dir hard-to-dangle || fail=1
  66
  67 # ===================================================
  68 # Create a hard link to a symlink to a directory.
  69 mkdir d || framework_failure_
  70 ln -s d link-to-dir || framework_failure_
  71 ln -L link-to-dir hard-to-dir-link 2>err && fail=1
  72 case $(cat err) in
  73   *": link-to-dir: hard link not allowed for directory"*) ;;
  74   *) fail=1 ;;
  75 esac
  76 ln -P link-to-dir/ hard-to-dir-link 2>err && fail=1
  77 case $(cat err) in
  78   *": link-to-dir/: hard link not allowed for directory"*) ;;
  79   *) fail=1 ;;
  80 esac
  81 ln -P link-to-dir hard-to-dir-link || fail=1
  82
  83 Exit $fail