1// SPDX-License-Identifier: GPL-2.0
 2#include <linux/sysctl.h>
 3#include <linux/slab.h>
 4#include <net/net_namespace.h>
 5#include <net/xfrm.h>
 6
 7static void __net_init __xfrm_sysctl_init(struct net *net)
 8{
 9	net->xfrm.sysctl_aevent_etime = XFRM_AE_ETIME;
10	net->xfrm.sysctl_aevent_rseqth = XFRM_AE_SEQT_SIZE;
11	net->xfrm.sysctl_larval_drop = 1;
12	net->xfrm.sysctl_acq_expires = 30;
13}
14
15#ifdef CONFIG_SYSCTL
16static struct ctl_table xfrm_table[] = {
17	{
18		.procname	= "xfrm_aevent_etime",
19		.maxlen		= sizeof(u32),
20		.mode		= 0644,
21		.proc_handler	= proc_douintvec
22	},
23	{
24		.procname	= "xfrm_aevent_rseqth",
25		.maxlen		= sizeof(u32),
26		.mode		= 0644,
27		.proc_handler	= proc_douintvec
28	},
29	{
30		.procname	= "xfrm_larval_drop",
31		.maxlen		= sizeof(int),
32		.mode		= 0644,
33		.proc_handler	= proc_dointvec
34	},
35	{
36		.procname	= "xfrm_acq_expires",
37		.maxlen		= sizeof(int),
38		.mode		= 0644,
39		.proc_handler	= proc_dointvec
40	},
 
41};
42
43int __net_init xfrm_sysctl_init(struct net *net)
44{
45	struct ctl_table *table;
46	size_t table_size = ARRAY_SIZE(xfrm_table);
47
48	__xfrm_sysctl_init(net);
49
50	table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL);
51	if (!table)
52		goto out_kmemdup;
53	table[0].data = &net->xfrm.sysctl_aevent_etime;
54	table[1].data = &net->xfrm.sysctl_aevent_rseqth;
55	table[2].data = &net->xfrm.sysctl_larval_drop;
56	table[3].data = &net->xfrm.sysctl_acq_expires;
57
58	/* Don't export sysctls to unprivileged users */
59	if (net->user_ns != &init_user_ns)
60		table_size = 0;
61
62	net->xfrm.sysctl_hdr = register_net_sysctl_sz(net, "net/core", table,
63						      table_size);
64	if (!net->xfrm.sysctl_hdr)
65		goto out_register;
66	return 0;
67
68out_register:
69	kfree(table);
70out_kmemdup:
71	return -ENOMEM;
72}
73
74void __net_exit xfrm_sysctl_fini(struct net *net)
75{
76	const struct ctl_table *table;
77
78	table = net->xfrm.sysctl_hdr->ctl_table_arg;
79	unregister_net_sysctl_table(net->xfrm.sysctl_hdr);
80	kfree(table);
81}
82#else
83int __net_init xfrm_sysctl_init(struct net *net)
84{
85	__xfrm_sysctl_init(net);
86	return 0;
87}
88#endif

 
 1#include <linux/sysctl.h>
 2#include <linux/slab.h>
 3#include <net/net_namespace.h>
 4#include <net/xfrm.h>
 5
 6static void __net_init __xfrm_sysctl_init(struct net *net)
 7{
 8	net->xfrm.sysctl_aevent_etime = XFRM_AE_ETIME;
 9	net->xfrm.sysctl_aevent_rseqth = XFRM_AE_SEQT_SIZE;
10	net->xfrm.sysctl_larval_drop = 1;
11	net->xfrm.sysctl_acq_expires = 30;
12}
13
14#ifdef CONFIG_SYSCTL
15static struct ctl_table xfrm_table[] = {
16	{
17		.procname	= "xfrm_aevent_etime",
18		.maxlen		= sizeof(u32),
19		.mode		= 0644,
20		.proc_handler	= proc_dointvec
21	},
22	{
23		.procname	= "xfrm_aevent_rseqth",
24		.maxlen		= sizeof(u32),
25		.mode		= 0644,
26		.proc_handler	= proc_dointvec
27	},
28	{
29		.procname	= "xfrm_larval_drop",
30		.maxlen		= sizeof(int),
31		.mode		= 0644,
32		.proc_handler	= proc_dointvec
33	},
34	{
35		.procname	= "xfrm_acq_expires",
36		.maxlen		= sizeof(int),
37		.mode		= 0644,
38		.proc_handler	= proc_dointvec
39	},
40	{}
41};
42
43int __net_init xfrm_sysctl_init(struct net *net)
44{
45	struct ctl_table *table;
 
46
47	__xfrm_sysctl_init(net);
48
49	table = kmemdup(xfrm_table, sizeof(xfrm_table), GFP_KERNEL);
50	if (!table)
51		goto out_kmemdup;
52	table[0].data = &net->xfrm.sysctl_aevent_etime;
53	table[1].data = &net->xfrm.sysctl_aevent_rseqth;
54	table[2].data = &net->xfrm.sysctl_larval_drop;
55	table[3].data = &net->xfrm.sysctl_acq_expires;
56
57	/* Don't export sysctls to unprivileged users */
58	if (net->user_ns != &init_user_ns)
59		table[0].procname = NULL;
60
61	net->xfrm.sysctl_hdr = register_net_sysctl(net, "net/core", table);
 
62	if (!net->xfrm.sysctl_hdr)
63		goto out_register;
64	return 0;
65
66out_register:
67	kfree(table);
68out_kmemdup:
69	return -ENOMEM;
70}
71
72void __net_exit xfrm_sysctl_fini(struct net *net)
73{
74	struct ctl_table *table;
75
76	table = net->xfrm.sysctl_hdr->ctl_table_arg;
77	unregister_net_sysctl_table(net->xfrm.sysctl_hdr);
78	kfree(table);
79}
80#else
81int __net_init xfrm_sysctl_init(struct net *net)
82{
83	__xfrm_sysctl_init(net);
84	return 0;
85}
86#endif