[PATCH v3 2/6] generic: copy_file_range immutable file test

[Amir Goldstein <amir73il@gmail.com>]

This test case was split out of Dave Chinner's copy_file_range bounds
check test to reduce the requirements for running the bounds check.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
 tests/generic/988     | 59 +++++++++++++++++++++++++++++++++++++++++++
 tests/generic/988.out |  5 ++++
 tests/generic/group   |  1 +
 3 files changed, 65 insertions(+)
 create mode 100755 tests/generic/988
 create mode 100644 tests/generic/988.out

diff --git a/tests/generic/988 b/tests/generic/988
new file mode 100755
index 00000000..0f4ee4ea
--- /dev/null
+++ b/tests/generic/988
@@ -0,0 +1,59 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2018 Red Hat, Inc.  All Rights Reserved.
+#
+# FS QA Test No. 988
+#
+# Check that we cannot copy_file_range() to/from an immutable file
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 7 15
+
+_cleanup()
+{
+	$CHATTR_PROG -i $testdir/immutable > /dev/null 2>&1
+	cd /
+	rm -rf $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# real QA test starts here
+_supported_os Linux
+_supported_fs generic
+
+rm -f $seqres.full
+
+_require_test
+_require_chattr i
+_require_xfs_io_command "copy_range"
+_require_xfs_io_command "chattr"
+
+testdir="$TEST_DIR/test-$seq"
+rm -rf $testdir
+mkdir $testdir
+
+rm -f $seqres.full
+
+$XFS_IO_PROG -f -c "pwrite -S 0x61 0 128k" $testdir/file >> $seqres.full 2>&1
+
+# we have to open the file to be immutable rw and hold it open over the
+# chattr command to set it immutable, otherwise we won't be able to open it for
+# writing after it's been made immutable. (i.e. would exercise file mode checks,
+# not immutable inode flag checks).
+echo immutable file returns EPERM
+$XFS_IO_PROG -f -c "pwrite -S 0x61 0 64k" -c fsync $testdir/immutable | _filter_xfs_io
+$XFS_IO_PROG -f -c "chattr +i" -c "copy_range -l 32k $testdir/file" $testdir/immutable
+$XFS_IO_PROG -f -r -c "chattr -i" $testdir/immutable
+
+# success, all done
+status=0
+exit
diff --git a/tests/generic/988.out b/tests/generic/988.out
new file mode 100644
index 00000000..e74a96bf
--- /dev/null
+++ b/tests/generic/988.out
@@ -0,0 +1,5 @@
+QA output created by 988
+immutable file returns EPERM
+wrote 65536/65536 bytes at offset 0
+XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+copy_range: Operation not permitted
diff --git a/tests/generic/group b/tests/generic/group
index b498eb56..20b95c14 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -550,3 +550,4 @@
 545 auto quick cap
 546 auto quick clone enospc log
 547 auto quick log
+988 auto quick copy_range
-- 
2.17.1