partition-perm

实战Linux编程的原代码,希望对学驱动的人能有所帮助

#!/bin/sh
# Make sure permissions are preserved when moving from one partition to another.

if test "$VERBOSE" = yes; then
  set -x
  mv --version
fi

. $srcdir/setup
. $srcdir/../envvar-check
. $srcdir/../lang-default

if test -z "$other_partition_tmpdir"; then
  exit 77
fi

pwd=`pwd`
dir=p-perm-$$
trap "cd $pwd; rm -rf $dir $other_partition_tmpdir" 0 1 2 3 15

mkdir $dir

cd $dir
: > file
chmod a=rwx file

umask 077
mv file $other_partition_tmpdir

fail=0
test -f file && fail=1
test -f $other_partition_tmpdir/file || fail=1

# This would have failed with the mv from fileutils-4.0i.
set _ `ls -l $other_partition_tmpdir/file`; shift; mode=$1
test "$mode" = "-rwxrwxrwx" || fail=1

exit $fail