tests/cp/cp-mv-enotsup-xattr.sh

   1 #!/bin/sh
   2 # Ensure that mv, cp -a and cp --preserve=xattr(all) options do work
   3 # as expected on file systems without their support and do show correct
   4 # diagnostics when required
   5
   6 # Copyright (C) 2009-2018 Free Software Foundation, Inc.
   7
   8 # This program is free software: you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation, either version 3 of the License, or
  11 # (at your option) any later version.
  12
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  20
  21 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  22 print_ver_ cp mv
  23
  24 require_root_
  25
  26 cwd=$(pwd)
  27 cleanup_() { cd /; umount "$cwd/noxattr"; umount "$cwd/xattr"; }
  28
  29 skip=0
  30
  31 # Mount an ext2 loopback file system at $WHERE with $OPTS
  32 make_fs() {
  33   where="$1"
  34   opts="$2"
  35
  36   fs="$where.bin"
  37
  38   dd if=/dev/zero of="$fs" bs=8192 count=200 > /dev/null 2>&1 \
  39                                                  || skip=1
  40   mkdir "$where"                                 || skip=1
  41   mkfs -t ext2 -F "$fs" ||
  42     skip_ "failed to create ext2 file system"
  43   mount -oloop,$opts "$fs" "$where"              || skip=1
  44   echo test > "$where"/f                         || skip=1
  45   test -s "$where"/f                             || skip=1
  46
  47   test $skip = 1 &&
  48     skip_ "insufficient mount/ext2 support"
  49 }
  50
  51 make_fs noxattr nouser_xattr
  52 make_fs xattr   user_xattr
  53
  54 # testing xattr name-value pair
  55 xattr_name="user.foo"
  56 xattr_value="bar"
  57 xattr_pair="$xattr_name=\"$xattr_value\""
  58
  59 echo test > xattr/a || framework_failure_
  60 getfattr -d xattr/a >out_a || skip_ "failed to get xattr of file"
  61 grep -F "$xattr_pair" out_a >/dev/null && framework_failure_
  62 setfattr -n "$xattr_name" -v "$xattr_value" xattr/a >out_a \
  63   || skip_ "failed to set xattr of file"
  64 getfattr -d xattr/a >out_a || skip_ "failed to get xattr of file"
  65 grep -F "$xattr_pair" out_a >/dev/null \
  66   || skip_ "failed to set xattr of file"
  67
  68
  69 # This should pass without diagnostics
  70 cp -a xattr/a noxattr/ 2>err || fail=1
  71 test -s noxattr/a   || fail=1  # destination file must not be empty
  72 compare /dev/null err || fail=1
  73
  74 rm -f err noxattr/a
  75
  76 # This should pass without diagnostics (new file)
  77 cp --preserve=all xattr/a noxattr/ 2>err || fail=1
  78 test -s noxattr/a   || fail=1  # destination file must not be empty
  79 compare /dev/null err || fail=1
  80
  81 # This should pass without diagnostics (existing file)
  82 cp --preserve=all xattr/a noxattr/ 2>err || fail=1
  83 test -s noxattr/a   || fail=1  # destination file must not be empty
  84 compare /dev/null err || fail=1
  85
  86 rm -f err noxattr/a
  87
  88 # This should fail with corresponding diagnostics
  89 cp -a --preserve=xattr xattr/a noxattr/ 2>err && fail=1
  90 if grep '^#define USE_XATTR 1' $CONFIG_HEADER > /dev/null; then
  91 cat <<\EOF > exp
  92 cp: setting attributes for 'noxattr/a': Operation not supported
  93 EOF
  94 else
  95 cat <<\EOF > exp
  96 cp: cannot preserve extended attributes, cp is built without xattr support
  97 EOF
  98 fi
  99
 100 compare exp err     || fail=1
 101
 102 rm -f err noxattr/a
 103
 104 # This should pass without diagnostics
 105 mv xattr/a noxattr/ 2>err || fail=1
 106 test -s noxattr/a         || fail=1  # destination file must not be empty
 107 compare /dev/null err || fail=1
 108
 109 # This should pass and copy xattrs of the symlink
 110 # since the xattrs used here are not in the 'user.' namespace.
 111 # Up to and including coreutils-8.22 xattrs of symlinks
 112 # were not copied across file systems.
 113 ln -s 'foo' xattr/symlink || framework_failure_
 114 # Note 'user.' namespace is only supported on regular files/dirs
 115 # so use the 'trusted.' namespace here
 116 txattr='trusted.overlay.whiteout'
 117 if setfattr -hn "$txattr" -v y xattr/symlink; then
 118   # Note only root can read the 'trusted.' namespace
 119   if getfattr -h -m- -d xattr/symlink | grep -F "$txattr"; then
 120     mv xattr/symlink noxattr/ 2>err || fail=1
 121     if grep '^#define USE_XATTR 1' $CONFIG_HEADER > /dev/null; then
 122       getfattr -h -m- -d noxattr/symlink | grep -F "$txattr" || fail=1
 123     fi
 124     compare /dev/null err || fail=1
 125   else
 126     echo "failed to get '$txattr' xattr. skipping symlink check" >&2
 127   fi
 128 else
 129   echo "failed to set '$txattr' xattr. skipping symlink check" >&2
 130 fi
 131
 132 Exit $fail