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Centos-kernel-stream-9/fs/sysctls.c
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Chris von Recklinghausen f6ed5ea18b fs: move namespace sysctls and declare fs base directory
Bugzilla: https://bugzilla.redhat.com/2160210

commit ab171b952c6e065779687b44041038efdadb3915
Author: Luis Chamberlain <mcgrof@kernel.org>
Date:   Fri Jan 21 22:13:27 2022 -0800

    fs: move namespace sysctls and declare fs base directory

    This moves the namespace sysctls to its own file as part of the
    kernel/sysctl.c spring cleaning

    Since we have now removed all sysctls for "fs", we now have to declare
    it on the filesystem code, we do that using the new helper, which
    reduces boiler plate code.

    We rename init_fs_shared_sysctls() to init_fs_sysctls() to reflect that
    now fs/sysctls.c is taking on the burden of being the first to register
    the base directory as well.

    Lastly, since init code will load in the order in which we link it we
    have to move the sysctl code to be linked in early, so that its early
    init routine runs prior to other fs code.  This way, other filesystem
    code can register their own sysctls using the helpers after this:

      * register_sysctl_init()
      * register_sysctl()

    Link: https://lkml.kernel.org/r/20211129211943.640266-3-mcgrof@kernel.org
    Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
    Cc: Al Viro <viro@zeniv.linux.org.uk>
    Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
    Cc: Antti Palosaari <crope@iki.fi>
    Cc: Christian Brauner <christian.brauner@ubuntu.com>
    Cc: "David S. Miller" <davem@davemloft.net>
    Cc: Eric Biederman <ebiederm@xmission.com>
    Cc: Eric Biggers <ebiggers@google.com>
    Cc: Iurii Zaikin <yzaikin@google.com>
    Cc: Kees Cook <keescook@chromium.org>
    Cc: Lukas Middendorf <kernel@tuxforce.de>
    Cc: Masami Hiramatsu <mhiramat@kernel.org>
    Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
    Cc: Stephen Kitt <steve@sk2.org>
    Cc: Xiaoming Ni <nixiaoming@huawei.com>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Chris von Recklinghausen <crecklin@redhat.com>
2023-03-24 11:18:32 -04:00

40 lines
809 B
C

// SPDX-License-Identifier: GPL-2.0
/*
* /proc/sys/fs shared sysctls
*
* These sysctls are shared between different filesystems.
*/
#include <linux/init.h>
#include <linux/sysctl.h>
static struct ctl_table fs_shared_sysctls[] = {
{
.procname = "overflowuid",
.data = &fs_overflowuid,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_MAXOLDUID,
},
{
.procname = "overflowgid",
.data = &fs_overflowgid,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_MAXOLDUID,
},
{ }
};
DECLARE_SYSCTL_BASE(fs, fs_shared_sysctls);
static int __init init_fs_sysctls(void)
{
return register_sysctl_base(fs);
}
early_initcall(init_fs_sysctls);