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From: Eric Biggers <ebiggers@kernel.org>
To: fstests@vger.kernel.org
Cc: linux-fscrypt@vger.kernel.org,
	linux-f2fs-devel@lists.sourceforge.net,
	Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <yuchao0@huawei.com>,
	Daeho Jeong <daeho43@gmail.com>
Subject: [PATCH 4/5] common/f2fs: add _require_scratch_f2fs_compression()
Date: Wed, 30 Sep 2020 17:25:06 -0700
Message-ID: <20201001002508.328866-5-ebiggers@kernel.org> (raw)
In-Reply-To: <20201001002508.328866-1-ebiggers@kernel.org>

From: Eric Biggers <ebiggers@google.com>

Create the file common/f2fs, which will contain f2fs-specific utilities.

Then add a function _require_scratch_f2fs_compression(), which checks
for f2fs compression support on the scratch filesystem.

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 common/f2fs | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 common/f2fs

diff --git a/common/f2fs b/common/f2fs
new file mode 100644
index 00000000..1b39d8ce
--- /dev/null
+++ b/common/f2fs
@@ -0,0 +1,27 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0-only
+# Copyright 2020 Google LLC
+
+# Require f2fs compression support on the scratch filesystem.
+# Optionally, check for support for a specific compression algorithm.
+_require_scratch_f2fs_compression()
+{
+	local algorithm=$1
+
+	_require_scratch
+
+	if [ ! -e /sys/fs/f2fs/features/compression ]; then
+		_notrun "Kernel doesn't support f2fs compression"
+	fi
+	# Note: '-O compression' is only accepted when used in
+	# combination with extra_attr.
+	if ! _scratch_mkfs -O compression,extra_attr >> $seqres.full; then
+		_notrun "f2fs-tools doesn't support compression"
+	fi
+	if [ -n "$algorithm" ]; then
+		if ! _scratch_mount "-o compress_algorithm=$algorithm"; then
+			_notrun "Kernel doesn't support $algorithm compression algorithm for f2fs"
+		fi
+		_scratch_unmount
+	fi
+}
-- 
2.28.0


  parent reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01  0:25 [PATCH 0/5] xfstests: test f2fs compression+encryption Eric Biggers
2020-10-01  0:25 ` [PATCH 1/5] fscrypt-crypt-util: clean up parsing --block-size and --inode-number Eric Biggers
2020-10-01  0:25 ` [PATCH 2/5] fscrypt-crypt-util: fix IV incrementing for --iv-ino-lblk-32 Eric Biggers
2020-10-01  0:25 ` [PATCH 3/5] fscrypt-crypt-util: add --block-number option Eric Biggers
2020-10-01  0:25 ` Eric Biggers [this message]
2020-10-01  0:25 ` [PATCH 5/5] f2fs: verify ciphertext of compressed+encrypted file Eric Biggers
2020-10-07  3:48 ` [PATCH 0/5] xfstests: test f2fs compression+encryption Eric Biggers
2020-10-07  4:27   ` [f2fs-dev] " Daeho Jeong

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