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Message-ID: <20240322154812.215369-1-lizetao1@huawei.com>
Date: Fri, 22 Mar 2024 23:48:07 +0800
From: Li Zetao <lizetao1@...wei.com>
To: <richard@....at>, <chengzhihao1@...wei.com>, <corbet@....net>,
<kent.overstreet@...ux.dev>, <agruenba@...hat.com>
CC: <lizetao1@...wei.com>, <linux-mtd@...ts.infradead.org>,
<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [RFC PATCH v2 0/5] ubifs: Support POSIX Access Control Lists (ACLs)
Hi,
This patchset is base on [1] and [2], adding implementation of ACLs for
ubifs.
Implement ACLs features based on POSIX to solve some difficulties that
require fine-grained access control. At the same time, it is also to
facilitate cross-file system migration.
In order to simplify the implementation, only v2 version POSIX ACLs are
implemented, eliminating the need for in-memory and on-flash format
conversion. And no need to implement security xattr handler in ubifs.
Some testcases have been tested and passed:
* generic testcases (modified version) for acl group in xfstest[3], they are generic/026/053/077/099/105/237/307/318/319/375/389/444/449/529/697.
* tacl_xattr.sh (modified version) in LTP[4].
[1]: https://lore.kernel.org/linux-mtd/1441962597-13543-1-git-send-email-shengyong1@huawei.com/
[2]: https://lore.kernel.org/linux-mtd/1476046382-19185-1-git-send-email-pascal.eberhard@gmail.com/
[3]: https://kernel.googlesource.com/pub/scm/fs/xfs/xfstests-dev/+/refs/heads/master/tests/generic/
[4]: https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/fs/acl/tacl_xattr.sh
Changelog:
v1 -> v2:
* Adjust patch order.
* Modify ubifs_xattr_remove to an external function to remove the
* xattr of ACL.
* Fix handling of updating file mode via ACL.
v1: https://lore.kernel.org/all/20240319161646.2153867-1-lizetao1@huawei.com/
Li Zetao (5):
ubifs: Add ACLs config option
ubifs: Implement POSIX Access Control Lists (ACLs)
ubifs: Initialize or update ACLs for inode
ubifs: Support accessing ACLs through inode_operations
ubifs: Introduce ACLs mount options
Documentation/filesystems/ubifs.rst | 4 +
fs/ubifs/Kconfig | 14 ++
fs/ubifs/Makefile | 1 +
fs/ubifs/acl.c | 192 ++++++++++++++++++++++++++++
fs/ubifs/dir.c | 22 ++++
fs/ubifs/file.c | 6 +
fs/ubifs/super.c | 41 ++++++
fs/ubifs/ubifs.h | 16 +++
fs/ubifs/xattr.c | 3 +-
9 files changed, 297 insertions(+), 2 deletions(-)
create mode 100644 fs/ubifs/acl.c
--
2.34.1
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