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From: Nikolay Borisov <nborisov@suse.com>
To: fstests@vger.kernel.org
Cc: linux-btrfs@vger.kernel.org, Nikolay Borisov <nborisov@suse.com>
Subject: [PATCH V2 2/2] btrfs: Add test for rename/exchange behavior between subvolumes
Date: Mon, 30 Aug 2021 15:23:06 +0300	[thread overview]
Message-ID: <20210830122306.882081-2-nborisov@suse.com> (raw)
In-Reply-To: <20210830122306.882081-1-nborisov@suse.com>

This tests ensures that renames/exchanges across subvolumes work only
for other subvolumes and are otherwise forbidden and fail.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
---
Changes in V2:
 * Added cross-subvol rename tests
 * Added cross-subvol subvolume rename test
 * Added ordinary volume rename test
 * Removed explicit sync

 tests/btrfs/246     | 43 +++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/246.out | 27 +++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100755 tests/btrfs/246
 create mode 100644 tests/btrfs/246.out

diff --git a/tests/btrfs/246 b/tests/btrfs/246
new file mode 100755
index 000000000000..eeb12bb457a8
--- /dev/null
+++ b/tests/btrfs/246
@@ -0,0 +1,43 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2021 SUSE Linux Products GmbH.  All Rights Reserved.
+#
+# FS QA Test 246
+#
+# Tests rename exchange behavior when subvolumes are involved. This is also a
+# regression test for 3f79f6f6247c ("btrfs: prevent rename2 from exchanging a
+# subvol with a directory from different parents").
+#
+. ./common/preamble
+_begin_fstest auto quick rename subvol
+
+# Import common functions.
+ . ./common/renameat2
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs btrfs
+_require_renameat2 exchange
+_require_scratch
+
+_scratch_mkfs >> $seqres.full 2>&1
+_scratch_mount
+
+# Create 2 subvols to use as parents for the rename ops
+$BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/subvol1 1>/dev/null
+$BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/subvol2 1>/dev/null
+
+# Ensure cross subvol ops are forbidden
+_rename_tests_source_dest $SCRATCH_MNT/subvol1/src $SCRATCH_MNT/subvol2/dst "cross-subvol" "-x"
+
+# Prepare a subvolume and a directory whose parents are different subvolumes
+$BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/subvol1/sub-subvol 1>/dev/null
+mkdir $SCRATCH_MNT/subvol2/dir
+
+# Ensure exchanging a subvol with a dir when both parents are different fails
+$here/src/renameat2 -x $SCRATCH_MNT/subvol1/sub-subvol $SCRATCH_MNT/subvol2/dir
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/246.out b/tests/btrfs/246.out
new file mode 100644
index 000000000000..d50dc28b1b40
--- /dev/null
+++ b/tests/btrfs/246.out
@@ -0,0 +1,27 @@
+QA output created by 246
+cross-subvol none/none -> No such file or directory
+cross-subvol none/regu -> No such file or directory
+cross-subvol none/symb -> No such file or directory
+cross-subvol none/dire -> No such file or directory
+cross-subvol none/tree -> No such file or directory
+cross-subvol regu/none -> No such file or directory
+cross-subvol regu/regu -> Invalid cross-device link
+cross-subvol regu/symb -> Invalid cross-device link
+cross-subvol regu/dire -> Invalid cross-device link
+cross-subvol regu/tree -> Invalid cross-device link
+cross-subvol symb/none -> No such file or directory
+cross-subvol symb/regu -> Invalid cross-device link
+cross-subvol symb/symb -> Invalid cross-device link
+cross-subvol symb/dire -> Invalid cross-device link
+cross-subvol symb/tree -> Invalid cross-device link
+cross-subvol dire/none -> No such file or directory
+cross-subvol dire/regu -> Invalid cross-device link
+cross-subvol dire/symb -> Invalid cross-device link
+cross-subvol dire/dire -> Invalid cross-device link
+cross-subvol dire/tree -> Invalid cross-device link
+cross-subvol tree/none -> No such file or directory
+cross-subvol tree/regu -> Invalid cross-device link
+cross-subvol tree/symb -> Invalid cross-device link
+cross-subvol tree/dire -> Invalid cross-device link
+cross-subvol tree/tree -> Invalid cross-device link
+Invalid cross-device link
--
2.17.1


  reply	other threads:[~2021-08-30 12:23 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-30 12:23 [PATCH 1/2] common/renameat2: Make _rename_tests_source_dest take flags as 4th arguement Nikolay Borisov
2021-08-30 12:23 ` Nikolay Borisov [this message]
2021-08-30 15:01   ` [PATCH V2 2/2] btrfs: Add test for rename/exchange behavior between subvolumes Filipe Manana
2021-08-30 15:03     ` Filipe Manana
2021-08-30 15:34     ` Nikolay Borisov
2021-08-30 15:36   ` [PATCH v2] " Nikolay Borisov
2021-09-03 16:23     ` Filipe Manana

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