linux-kernel - [PATCH 0/2] proc: proc_setattr for /proc/$PID/net

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Message-Id: <20230624-proc-net-setattr-v1-0-73176812adee@weissschuh.net>
Date:   Sat, 24 Jun 2023 12:30:45 +0200
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, Zhangjin Wu <falcon@...ylab.org>,
        Arnd Bergmann <arnd@...db.de>,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH 0/2] proc: proc_setattr for /proc/$PID/net

/proc/$PID/net currently allows the setting of file attributes,
in contrast to other /proc/$PID/ files and directories.

This would break the nolibc testsuite so the first patch in the series
removes the offending testcase.
The "fix" for nolibc-test is intentionally kept trivial as the series
will most likely go through the filesystem tree and if conflicts arise,
it is obvious on how to resolve them.

Technically this can lead to breakage of nolibc-test if an old
nolibc-test is used with a newer kernel containing the fix.

Note:

Except for /proc itself this is the only "struct inode_operations" in
fs/proc/ that is missing an implementation of setattr().

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
Thomas Weißschuh (2):
      selftests/nolibc: drop test chmod_net
      proc: use generic setattr() for /proc/$PID/net

 fs/proc/proc_net.c                           | 1 +
 tools/testing/selftests/nolibc/nolibc-test.c | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)
---
base-commit: a92b7d26c743b9dc06d520f863d624e94978a1d9
change-id: 20230624-proc-net-setattr-8f0a6b8eb2f5

Best regards,
-- 
Thomas Weißschuh <linux@...ssschuh.net>