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authorLuis Chamberlain <mcgrof@kernel.org>2022-01-21 22:13:06 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-01-22 08:33:36 +0200
commitd1d8ac9edf10e83f16d13f009439585a1f93ccb2 (patch)
treea63ed488ecd06cc16ef8889f0f3a3881d07ac09d /fs
parent54771613e8a7dbbba2a205ddf1b33e25a290b3fd (diff)
fs: move shared sysctls to fs/sysctls.c
To help with this maintenance let's start by moving sysctls to places where they actually belong. The proc sysctl maintainers do not want to know what sysctl knobs you wish to add for your own piece of code, we just care about the core logic. To help with this maintenance let's start by moving sysctls to places where they actually belong. The proc sysctl maintainers do not want to know what sysctl knobs you wish to add for your own piece of code, we just care about the core logic. So move sysctls which are shared between filesystems into a common file outside of kernel/sysctl.c. Link: https://lkml.kernel.org/r/20211129205548.605569-6-mcgrof@kernel.org Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Antti Palosaari <crope@iki.fi> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Jeff Layton <jlayton@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Lukas Middendorf <kernel@tuxforce.de> 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>
Diffstat (limited to 'fs')
-rw-r--r--fs/Makefile1
-rw-r--r--fs/sysctls.c38
2 files changed, 39 insertions, 0 deletions
diff --git a/fs/Makefile b/fs/Makefile
index 84c5e4cdfee5..ea8770d124da 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -28,6 +28,7 @@ obj-y += notify/
obj-$(CONFIG_EPOLL) += eventpoll.o
obj-y += anon_inodes.o
obj-$(CONFIG_SIGNALFD) += signalfd.o
+obj-$(CONFIG_SYSCTL) += sysctls.o
obj-$(CONFIG_TIMERFD) += timerfd.o
obj-$(CONFIG_EVENTFD) += eventfd.o
obj-$(CONFIG_USERFAULTFD) += userfaultfd.o
diff --git a/fs/sysctls.c b/fs/sysctls.c
new file mode 100644
index 000000000000..54216cd1ecd7
--- /dev/null
+++ b/fs/sysctls.c
@@ -0,0 +1,38 @@
+// 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,
+ },
+ { }
+};
+
+static int __init init_fs_shared_sysctls(void)
+{
+ register_sysctl_init("fs", fs_shared_sysctls);
+ return 0;
+}
+
+early_initcall(init_fs_shared_sysctls);