change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/kernel/ucount.c
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@@ -1,9 +1,4 @@
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-/*
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- *  This program is free software; you can redistribute it and/or
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- *  modify it under the terms of the GNU General Public License as
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- *  published by the Free Software Foundation, version 2 of the
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- *  License.
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- */
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+// SPDX-License-Identifier: GPL-2.0-only
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 #include <linux/stat.h>
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 #include <linux/sysctl.h>
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@@ -57,16 +52,14 @@
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 	.permissions = set_permissions,
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 };
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-static int zero = 0;
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-static int int_max = INT_MAX;
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 #define UCOUNT_ENTRY(name)				\
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 	{						\
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 		.procname	= name,			\
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 		.maxlen		= sizeof(int),		\
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 		.mode		= 0644,			\
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 		.proc_handler	= proc_dointvec_minmax,	\
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-		.extra1		= &zero,		\
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-		.extra2		= &int_max,		\
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+		.extra1		= SYSCTL_ZERO,		\
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+		.extra2		= SYSCTL_INT_MAX,	\
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 	}
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 static struct ctl_table user_table[] = {
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 	UCOUNT_ENTRY("max_user_namespaces"),
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@@ -76,6 +69,7 @@
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 	UCOUNT_ENTRY("max_net_namespaces"),
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 	UCOUNT_ENTRY("max_mnt_namespaces"),
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 	UCOUNT_ENTRY("max_cgroup_namespaces"),
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+	UCOUNT_ENTRY("max_time_namespaces"),
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 #ifdef CONFIG_INOTIFY_USER
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 	UCOUNT_ENTRY("max_inotify_instances"),
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 	UCOUNT_ENTRY("max_inotify_watches"),
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@@ -88,6 +82,8 @@
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 {
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 #ifdef CONFIG_SYSCTL
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 	struct ctl_table *tbl;
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+
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+	BUILD_BUG_ON(ARRAY_SIZE(user_table) != UCOUNT_COUNTS + 1);
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 	setup_sysctl_set(&ns->set, &set_root, set_is_seen);
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 	tbl = kmemdup(user_table, sizeof(user_table), GFP_KERNEL);
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 	if (tbl) {