1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * NET4: Sysctl interface to net af_unix subsystem.
5 * Authors: Mike Shaver.
9 #include <linux/slab.h>
10 #include <linux/sysctl.h>
12 #include <net/af_unix.h>
14 static struct ctl_table unix_table[] = {
16 .procname = "max_dgram_qlen",
17 .data = &init_net.unx.sysctl_max_dgram_qlen,
18 .maxlen = sizeof(int),
20 .proc_handler = proc_dointvec
25 int __net_init unix_sysctl_register(struct net *net)
27 struct ctl_table *table;
29 table = kmemdup(unix_table, sizeof(unix_table), GFP_KERNEL);
33 /* Don't export sysctls to unprivileged users */
34 if (net->user_ns != &init_user_ns)
35 table[0].procname = NULL;
37 table[0].data = &net->unx.sysctl_max_dgram_qlen;
38 net->unx.ctl = register_net_sysctl(net, "net/unix", table);
39 if (net->unx.ctl == NULL)
50 void unix_sysctl_unregister(struct net *net)
52 struct ctl_table *table;
54 table = net->unx.ctl->ctl_table_arg;
55 unregister_net_sysctl_table(net->unx.ctl);