test 196, add a testcase for renames across project boundaries

Make sure rename across project boundaries is rejected and doesn't
cause hangs.  Based on a report and testcase from Arkadiusz Miskiewicz.

Signed-off-by: Christoph Hellwig <hch@lst.de>

196

@@ -0,0 +1,86 @@
+#! /bin/sh
+# FS QA Test No. 196
+#
+# Make sure renames accross project boundaries are properly rejected
+# and that we don't use the wrong lock flags internally.
+#
+# Based on a report and testcase from Arkadiusz Miskiewicz <arekm@maven.pl>
+#
+#-----------------------------------------------------------------------
+# Copyright (c) 2008 Christoph Hellwig.
+#-----------------------------------------------------------------------
+#
+# creator
+owner=hch@lst.de
+
+seq=`basename $0`
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+
+_cleanup()
+{
+	cd /
+	umount $SCRATCH_MNT
+	rm -f $tmp.*
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+. ./common.quota
+
+# real QA test starts here
+_supported_fs xfs
+_supported_os Linux
+
+_require_scratch
+_require_quota
+
+#
+# Setup temporary replacements for /etc/projects and /etc/projid
+#
+cat >$tmp.projects <<EOF
+42:$SCRATCH_MNT/t
+EOF
+
+cat >$tmp.projid <<EOF
+answer:42
+EOF
+
+#
+# And make sure we always use our replacements
+#
+quota_cmd="xfs_quota -D $tmp.projects -P $tmp.projid"
+
+_scratch_mkfs_xfs >/dev/null 2>&1
+_qmount_option "pquota"
+_qmount
+
+#
+# Create the project root
+#
+mkdir $SCRATCH_MNT/t
+
+$quota_cmd -x -c 'project -s answer' $SCRATCH_MNT >/dev/null 2>&1
+$quota_cmd -x -c 'limit -p bhard=100m answer' $SCRATCH_MNT
+
+touch $SCRATCH_MNT/test
+
+#
+# Try renaming a file into the project.  This should fail.
+#
+# We repeat this a couple thousand times as a single rename couldn't
+# always trigger the wrong unlock flags bug we had in older kernels.
+#
+for i in `seq 1 2000`; do
+    src/rename test t/test
+done
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0

group

@@ -298,3 +298,4 @@ atime
 193 metadata auto
 194 rw auto
 195 ioctl dump auto
+196 quota auto

src/Makefile

@@ -9,7 +9,7 @@ TARGETS = dirstress fill fill2 getpagesize holes lstat64 \
 	nametest permname randholes runas truncfile usemem \
 	mmapcat append_reader append_writer dirperf metaperf \
 	devzero feature alloc fault fstest t_access_root \
-	godown resvtest writemod makeextents itrash \
+	godown resvtest writemod makeextents itrash rename \
 	multi_open_unlink dmiperf unwritten_sync genhashnames
 
 LINUX_TARGETS = loggen xfsctl bstat t_mtab getdevicesize \

src/rename.c

@@ -0,0 +1,21 @@
+/*
+ * A trivial shell command wrapping rename(2).
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+	if (argc != 3) {
+		fprintf(stderr, "usage: rename <from> <to>\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (rename(argv[1], argv[2]) == -1) {
+		perror("rename");
+		exit(EXIT_FAILURE);
+	}
+
+	exit(0);
+}