#! /bin/sh

# Copyright (C) 2002 by Martin Pool <mbp@samba.org>

# This program is distributable under the terms of the GNU GPL (see
# COPYING).

# Test rsync handling of hardlinks.  By default, rsync does not detect
# hard links and they get sent as separate files.  If you specify -H,
# then hard links are detected and linked together on the receiver.

. "$suitedir/rsync.fns"

outfile="$scratchdir/rsync.out"

# Build some hardlinks

fromdir="$scratchdir/from"
todir="$scratchdir/to"

# TODO: Need to test whether hardlinks are possible on this OS/filesystem

mkdir "$fromdir"
name1="$fromdir/name1"
name2="$fromdir/name2"
name3="$fromdir/name3"
name4="$fromdir/name4"
echo "This is the file" > "$name1"
ln "$name1" "$name2" || fail "Can't create hardlink"
ln "$name2" "$name3" || fail "Can't create hardlink"
cp "$name2" "$name4" || fail "Can't copy file"
cat $srcdir/*.c >"$fromdir/text"

checkit "$RSYNC -aHivv '$fromdir/' '$todir/'" "$fromdir" "$todir"

echo "extra extra" >>"$todir/name1"

checkit "$RSYNC -aHivv --no-whole-file '$fromdir/' '$todir/'" "$fromdir" "$todir"

# Add a new link in a new subdirectory to test that we don't try to link
# the files before the directory gets created.
mkdir "$fromdir/subdir"
ln "$name1" "$fromdir/subdir/new-file"
rm "$todir/text"

checkit "$RSYNC -aHivv '$fromdir/' '$todir/'" "$fromdir" "$todir"

# Do some duplicate copies using --link-dest and --copy-dest to test that
# we hard-link all locally-inherited items.
checkit "$RSYNC -aHivv --link-dest='$todir' '$fromdir/' '$chkdir/'" "$todir" "$chkdir"

rm -rf "$chkdir"
checkit "$RSYNC -aHivv --copy-dest='$todir' '$fromdir/' '$chkdir/'" "$fromdir" "$chkdir"

# Create a hard link that has only one part in the hierarchy.
echo "This is another file" >"$fromdir/solo"
ln "$fromdir/solo" "$chkdir/solo" || fail "Can't create hardlink"

# Make sure that the checksum data doesn't slide due to an HLINK_BUMP() change.
$RSYNC -aHivc "$fromdir/" "$chkdir/" | tee "$outfile"
grep solo "$outfile" && test_fail "Erroneous copy of solo file occurred!"

# Make sure there's nothing wrong with sending a single file with -H
# enabled (this has broken twice so far, so we need this test).
rm -rf "$todir"
$RSYNC -aHivv "$name1" "$todir/"
diff $diffopt "$name1" "$todir" || test_fail "solo copy of name1 failed"

# The script would have aborted on error, so getting here means we've won.
exit 0