tests/cp/same-file

   1 #!/bin/sh
   2 # Test some of cp's options and how cp handles situations in
   3 # which a naive implementation might overwrite the source file.
   4
   5 # Copyright (C) 1998-2000, 2002-2004, 2006-2010 Free Software Foundation, Inc.
   6
   7 # This program is free software: you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 if test "$VERBOSE" = yes; then
  21   set -x
  22   cp --version
  23 fi
  24
  25 . $srcdir/test-lib.sh
  26
  27 # Unset CDPATH.  Otherwise, output from the `cd dir' command
  28 # can make this test fail.
  29 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
  30
  31 VERSION_CONTROL=numbered; export VERSION_CONTROL
  32
  33 # Determine whether a hard link to a symlink points to the symlink
  34 # itself or to its referent.  For example, the link from FreeBSD6.1
  35 # does dereference a symlink, but the one from Linux does not.
  36 ln -s no-such dangling-slink
  37 ln dangling-slink hard-link > /dev/null 2>&1 \
  38   && hard_link_to_symlink_does_the_deref=no \
  39   || hard_link_to_symlink_does_the_deref=yes
  40 rm -f no-such dangling-slink hard-link
  41
  42 test $hard_link_to_symlink_does_the_deref = yes \
  43     && remove_these_sed='/^0 -[bf]*l .*sl1 ->/d' \
  44     || remove_these_sed='/^ELIDE NO TEST OUTPUT/d'
  45
  46 actual=actual-$$
  47 expected=expected-$$
  48
  49 exec 1> $actual
  50
  51 # FIXME: This should be bigger: like more than 8k
  52 contents=XYZ
  53
  54 for args in 'foo symlink' 'symlink foo' 'foo foo' 'sl1 sl2' 'foo hardlink'; do
  55   for options in '' -d -f -df --rem -b -bd -bf -bdf \
  56                  -l -dl -fl -dfl -bl -bdl -bfl -bdfl; do
  57     case $args$options in
  58       # These tests are not portable.
  59       # They all involve making a hard link to a symbolic link.
  60       # In the past, we've skipped the tests that are not portable,
  61       # by doing "continue" here and eliminating the corresponding
  62       # expected output lines below.  Don't do that anymore.
  63       'symlink foo'-dfl)
  64         continue;;
  65       'symlink foo'-bdl)
  66         continue;;
  67       'symlink foo'-bdfl)
  68         continue;;
  69       'sl1 sl2'-dfl)
  70         continue;;
  71       'sl1 sl2'-bd*l)
  72         continue;;
  73       'sl1 sl2'-dl)
  74         continue;;
  75     esac
  76
  77     # cont'd  Instead, skip them only on systems for which link does
  78     # dereference a symlink.  Detect and skip such tests here.
  79     case $hard_link_to_symlink_does_the_deref:$args:$options in
  80       'yes:sl1 sl2:-fl')
  81         continue ;;
  82       'yes:sl1 sl2:-bl')
  83         continue ;;
  84       'yes:sl1 sl2:-bfl')
  85         continue ;;
  86     esac
  87
  88     rm -rf dir
  89     mkdir dir
  90     cd dir
  91     echo $contents > foo
  92     case "$args" in *symlink*) ln -s foo symlink ;; esac
  93     case "$args" in *hardlink*) ln foo hardlink ;; esac
  94     case "$args" in *sl1*) ln -s foo sl1;; esac
  95     case "$args" in *sl2*) ln -s foo sl2;; esac
  96     (
  97       (
  98         # echo 1>&2 cp $options $args
  99         cp $options $args 2>_err
 100         echo $? $options
 101
 102         # Normalize the program name and diagnostics in the error output,
 103         # and put brackets around the output.
 104         if test -s _err; then
 105           sed '
 106             s/^[^:]*:\([^:]*\).*/cp:\1/
 107             1s/^/[/
 108             $s/$/]/
 109           ' _err
 110         fi
 111         # Strip off all but the file names.
 112         ls=`ls -gG --ignore=_err . \
 113             | sed \
 114                 -e '/^total /d' \
 115                 -e 's/^[^ ]*  *[^ ]*  *[^ ]*  *[^ ]*  *[^ ]*  *[^ ]*  *//'`
 116         echo "($ls)"
 117         # Make sure the original is unchanged and that
 118         # the destination is a copy.
 119         for f in $args; do
 120           if test -f $f; then
 121             case "`cat $f`" in
 122               "$contents") ;;
 123               *) echo cp FAILED;;
 124             esac
 125           else
 126             echo symlink-loop
 127           fi
 128         done
 129       ) | tr '\n' ' '
 130       echo
 131     ) | sed 's/  *$//'
 132     cd ..
 133   done
 134   echo
 135 done
 136
 137 cat <<\EOF | sed "$remove_these_sed" > $expected
 138 1 [cp: `foo' and `symlink' are the same file] (foo symlink -> foo)
 139 1 -d [cp: `foo' and `symlink' are the same file] (foo symlink -> foo)
 140 1 -f [cp: `foo' and `symlink' are the same file] (foo symlink -> foo)
 141 1 -df [cp: `foo' and `symlink' are the same file] (foo symlink -> foo)
 142 0 --rem (foo symlink)
 143 0 -b (foo symlink symlink.~1~ -> foo)
 144 0 -bd (foo symlink symlink.~1~ -> foo)
 145 0 -bf (foo symlink symlink.~1~ -> foo)
 146 0 -bdf (foo symlink symlink.~1~ -> foo)
 147 1 -l [cp: cannot create link `symlink'] (foo symlink -> foo)
 148 0 -dl (foo symlink -> foo)
 149 0 -fl (foo symlink)
 150 0 -dfl (foo symlink)
 151 0 -bl (foo symlink symlink.~1~ -> foo)
 152 0 -bdl (foo symlink symlink.~1~ -> foo)
 153 0 -bfl (foo symlink symlink.~1~ -> foo)
 154 0 -bdfl (foo symlink symlink.~1~ -> foo)
 155
 156 1 [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 157 1 -d [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 158 1 -f [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 159 1 -df [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 160 1 --rem [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 161 1 -b [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 162 0 -bd (foo -> foo foo.~1~ symlink -> foo) symlink-loop symlink-loop
 163 1 -bf [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 164 0 -bdf (foo -> foo foo.~1~ symlink -> foo) symlink-loop symlink-loop
 165 0 -l (foo symlink -> foo)
 166 0 -dl (foo symlink -> foo)
 167 0 -fl (foo symlink -> foo)
 168 0 -bl (foo symlink -> foo)
 169 0 -bfl (foo symlink -> foo)
 170
 171 1 [cp: `foo' and `foo' are the same file] (foo)
 172 1 -d [cp: `foo' and `foo' are the same file] (foo)
 173 1 -f [cp: `foo' and `foo' are the same file] (foo)
 174 1 -df [cp: `foo' and `foo' are the same file] (foo)
 175 1 --rem [cp: `foo' and `foo' are the same file] (foo)
 176 1 -b [cp: `foo' and `foo' are the same file] (foo)
 177 1 -bd [cp: `foo' and `foo' are the same file] (foo)
 178 0 -bf (foo foo.~1~)
 179 0 -bdf (foo foo.~1~)
 180 0 -l (foo)
 181 0 -dl (foo)
 182 0 -fl (foo)
 183 0 -dfl (foo)
 184 0 -bl (foo)
 185 0 -bdl (foo)
 186 0 -bfl (foo foo.~1~)
 187 0 -bdfl (foo foo.~1~)
 188
 189 1 [cp: `sl1' and `sl2' are the same file] (foo sl1 -> foo sl2 -> foo)
 190 0 -d (foo sl1 -> foo sl2 -> foo)
 191 1 -f [cp: `sl1' and `sl2' are the same file] (foo sl1 -> foo sl2 -> foo)
 192 0 -df (foo sl1 -> foo sl2 -> foo)
 193 0 --rem (foo sl1 -> foo sl2)
 194 0 -b (foo sl1 -> foo sl2 sl2.~1~ -> foo)
 195 0 -bd (foo sl1 -> foo sl2 -> foo sl2.~1~ -> foo)
 196 0 -bf (foo sl1 -> foo sl2 sl2.~1~ -> foo)
 197 0 -bdf (foo sl1 -> foo sl2 -> foo sl2.~1~ -> foo)
 198 1 -l [cp: cannot create link `sl2'] (foo sl1 -> foo sl2 -> foo)
 199 0 -fl (foo sl1 -> foo sl2 -> foo)
 200 0 -bl (foo sl1 -> foo sl2 -> foo sl2.~1~ -> foo)
 201 0 -bfl (foo sl1 -> foo sl2 -> foo sl2.~1~ -> foo)
 202
 203 1 [cp: `foo' and `hardlink' are the same file] (foo hardlink)
 204 1 -d [cp: `foo' and `hardlink' are the same file] (foo hardlink)
 205 1 -f [cp: `foo' and `hardlink' are the same file] (foo hardlink)
 206 1 -df [cp: `foo' and `hardlink' are the same file] (foo hardlink)
 207 0 --rem (foo hardlink)
 208 0 -b (foo hardlink hardlink.~1~)
 209 0 -bd (foo hardlink hardlink.~1~)
 210 0 -bf (foo hardlink hardlink.~1~)
 211 0 -bdf (foo hardlink hardlink.~1~)
 212 0 -l (foo hardlink)
 213 0 -dl (foo hardlink)
 214 0 -fl (foo hardlink)
 215 0 -dfl (foo hardlink)
 216 0 -bl (foo hardlink)
 217 0 -bdl (foo hardlink)
 218 0 -bfl (foo hardlink)
 219 0 -bdfl (foo hardlink)
 220
 221 EOF
 222
 223
 224 compare $expected $actual 1>&2 || fail=1
 225
 226 Exit $fail