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, 2006-2011 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 . "${srcdir=.}/init.sh"; path_prepend_ ../src
  21 print_ver_ cp
  22
  23 # Unset CDPATH.  Otherwise, output from the `cd dir' command
  24 # can make this test fail.
  25 (unset CDPATH) >/dev/null 2>&1 && unset CDPATH
  26
  27 VERSION_CONTROL=numbered; export VERSION_CONTROL
  28
  29 # Determine whether a hard link to a symlink points to the symlink
  30 # itself or to its referent.  For example, the link from FreeBSD6.1
  31 # does dereference a symlink, but the one from Linux does not.
  32 ln -s no-such dangling-slink
  33 ln dangling-slink hard-link > /dev/null 2>&1 \
  34   && hard_link_to_symlink_does_the_deref=no \
  35   || hard_link_to_symlink_does_the_deref=yes
  36 rm -f no-such dangling-slink hard-link
  37
  38 test $hard_link_to_symlink_does_the_deref = yes \
  39     && remove_these_sed='/^0 -[bf]*l .*sl1 ->/d' \
  40     || remove_these_sed='/^ELIDE NO TEST OUTPUT/d'
  41
  42 exec 3>&1 1> actual
  43
  44 # FIXME: This should be bigger: like more than 8k
  45 contents=XYZ
  46
  47 for args in 'foo symlink' 'symlink foo' 'foo foo' 'sl1 sl2' 'foo hardlink'; do
  48   for options in '' -d -f -df --rem -b -bd -bf -bdf \
  49                  -l -dl -fl -dfl -bl -bdl -bfl -bdfl; do
  50     case $args$options in
  51       # These tests are not portable.
  52       # They all involve making a hard link to a symbolic link.
  53       # In the past, we've skipped the tests that are not portable,
  54       # by doing "continue" here and eliminating the corresponding
  55       # expected output lines below.  Don't do that anymore.
  56       'symlink foo'-dfl)
  57         continue;;
  58       'symlink foo'-bdl)
  59         continue;;
  60       'symlink foo'-bdfl)
  61         continue;;
  62       'sl1 sl2'-dfl)
  63         continue;;
  64       'sl1 sl2'-bd*l)
  65         continue;;
  66       'sl1 sl2'-dl)
  67         continue;;
  68     esac
  69
  70     # cont'd  Instead, skip them only on systems for which link does
  71     # dereference a symlink.  Detect and skip such tests here.
  72     case $hard_link_to_symlink_does_the_deref:$args:$options in
  73       'yes:sl1 sl2:-fl')
  74         continue ;;
  75       'yes:sl1 sl2:-bl')
  76         continue ;;
  77       'yes:sl1 sl2:-bfl')
  78         continue ;;
  79     esac
  80
  81     rm -rf dir
  82     mkdir dir
  83     cd dir
  84     echo $contents > foo
  85     case "$args" in *symlink*) ln -s foo symlink ;; esac
  86     case "$args" in *hardlink*) ln foo hardlink ;; esac
  87     case "$args" in *sl1*) ln -s foo sl1;; esac
  88     case "$args" in *sl2*) ln -s foo sl2;; esac
  89     (
  90       (
  91         # echo 1>&2 cp $options $args
  92         cp $options $args 2>_err
  93         echo $? $options
  94
  95         # Normalize the program name and diagnostics in the error output,
  96         # and put brackets around the output.
  97         if test -s _err; then
  98           sed '
  99             s/^[^:]*:\([^:]*\).*/cp:\1/
 100             1s/^/[/
 101             $s/$/]/
 102           ' _err
 103         fi
 104         # Strip off all but the file names.
 105         ls=`ls -gG --ignore=_err . \
 106             | sed \
 107                 -e '/^total /d' \
 108                 -e 's/^[^ ]*  *[^ ]*  *[^ ]*  *[^ ]*  *[^ ]*  *[^ ]*  *//'`
 109         echo "($ls)"
 110         # Make sure the original is unchanged and that
 111         # the destination is a copy.
 112         for f in $args; do
 113           if test -f $f; then
 114             case "`cat $f`" in
 115               "$contents") ;;
 116               *) echo cp FAILED;;
 117             esac
 118           else
 119             echo symlink-loop
 120           fi
 121         done
 122       ) | tr '\n' ' '
 123       echo
 124     ) | sed 's/  *$//'
 125     cd ..
 126   done
 127   echo
 128 done
 129
 130 cat <<\EOF | sed "$remove_these_sed" > expected
 131 1 [cp: `foo' and `symlink' are the same file] (foo symlink -> foo)
 132 1 -d [cp: `foo' and `symlink' are the same file] (foo symlink -> foo)
 133 1 -f [cp: `foo' and `symlink' are the same file] (foo symlink -> foo)
 134 1 -df [cp: `foo' and `symlink' are the same file] (foo symlink -> foo)
 135 0 --rem (foo symlink)
 136 0 -b (foo symlink symlink.~1~ -> foo)
 137 0 -bd (foo symlink symlink.~1~ -> foo)
 138 0 -bf (foo symlink symlink.~1~ -> foo)
 139 0 -bdf (foo symlink symlink.~1~ -> foo)
 140 1 -l [cp: cannot create hard link `symlink' to `foo'] (foo symlink -> foo)
 141 0 -dl (foo symlink -> foo)
 142 0 -fl (foo symlink)
 143 0 -dfl (foo symlink)
 144 0 -bl (foo symlink symlink.~1~ -> foo)
 145 0 -bdl (foo symlink symlink.~1~ -> foo)
 146 0 -bfl (foo symlink symlink.~1~ -> foo)
 147 0 -bdfl (foo symlink symlink.~1~ -> foo)
 148
 149 1 [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 150 1 -d [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 151 1 -f [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 152 1 -df [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 153 1 --rem [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 154 1 -b [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 155 0 -bd (foo -> foo foo.~1~ symlink -> foo) symlink-loop symlink-loop
 156 1 -bf [cp: `symlink' and `foo' are the same file] (foo symlink -> foo)
 157 0 -bdf (foo -> foo foo.~1~ symlink -> foo) symlink-loop symlink-loop
 158 0 -l (foo symlink -> foo)
 159 0 -dl (foo symlink -> foo)
 160 0 -fl (foo symlink -> foo)
 161 0 -bl (foo symlink -> foo)
 162 0 -bfl (foo symlink -> foo)
 163
 164 1 [cp: `foo' and `foo' are the same file] (foo)
 165 1 -d [cp: `foo' and `foo' are the same file] (foo)
 166 1 -f [cp: `foo' and `foo' are the same file] (foo)
 167 1 -df [cp: `foo' and `foo' are the same file] (foo)
 168 1 --rem [cp: `foo' and `foo' are the same file] (foo)
 169 1 -b [cp: `foo' and `foo' are the same file] (foo)
 170 1 -bd [cp: `foo' and `foo' are the same file] (foo)
 171 0 -bf (foo foo.~1~)
 172 0 -bdf (foo foo.~1~)
 173 0 -l (foo)
 174 0 -dl (foo)
 175 0 -fl (foo)
 176 0 -dfl (foo)
 177 0 -bl (foo)
 178 0 -bdl (foo)
 179 0 -bfl (foo foo.~1~)
 180 0 -bdfl (foo foo.~1~)
 181
 182 1 [cp: `sl1' and `sl2' are the same file] (foo sl1 -> foo sl2 -> foo)
 183 0 -d (foo sl1 -> foo sl2 -> foo)
 184 1 -f [cp: `sl1' and `sl2' are the same file] (foo sl1 -> foo sl2 -> foo)
 185 0 -df (foo sl1 -> foo sl2 -> foo)
 186 0 --rem (foo sl1 -> foo sl2)
 187 0 -b (foo sl1 -> foo sl2 sl2.~1~ -> foo)
 188 0 -bd (foo sl1 -> foo sl2 -> foo sl2.~1~ -> foo)
 189 0 -bf (foo sl1 -> foo sl2 sl2.~1~ -> foo)
 190 0 -bdf (foo sl1 -> foo sl2 -> foo sl2.~1~ -> foo)
 191 1 -l [cp: cannot create hard link `sl2' to `sl1'] (foo sl1 -> foo sl2 -> foo)
 192 0 -fl (foo sl1 -> foo sl2 -> foo)
 193 0 -bl (foo sl1 -> foo sl2 -> foo sl2.~1~ -> foo)
 194 0 -bfl (foo sl1 -> foo sl2 -> foo sl2.~1~ -> foo)
 195
 196 1 [cp: `foo' and `hardlink' are the same file] (foo hardlink)
 197 1 -d [cp: `foo' and `hardlink' are the same file] (foo hardlink)
 198 1 -f [cp: `foo' and `hardlink' are the same file] (foo hardlink)
 199 1 -df [cp: `foo' and `hardlink' are the same file] (foo hardlink)
 200 0 --rem (foo hardlink)
 201 0 -b (foo hardlink hardlink.~1~)
 202 0 -bd (foo hardlink hardlink.~1~)
 203 0 -bf (foo hardlink hardlink.~1~)
 204 0 -bdf (foo hardlink hardlink.~1~)
 205 0 -l (foo hardlink)
 206 0 -dl (foo hardlink)
 207 0 -fl (foo hardlink)
 208 0 -dfl (foo hardlink)
 209 0 -bl (foo hardlink)
 210 0 -bdl (foo hardlink)
 211 0 -bfl (foo hardlink)
 212 0 -bdfl (foo hardlink)
 213
 214 EOF
 215
 216 exec 1>&3 3>&-
 217
 218 compare expected actual 1>&2 || fail=1
 219
 220 Exit $fail