root/fs/sysctls.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 const 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_sysctls(void)
{
        register_sysctl_init("fs", fs_shared_sysctls);
        return 0;
}

early_initcall(init_fs_sysctls);