blob: 553ef6a487d01f5f1d47818a5cae172dbf0af4c6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * NET4: Sysctl interface to net af_unix subsystem.
3 *
4 * Authors: Mike Shaver.
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#include <linux/mm.h>
13#include <linux/sysctl.h>
14
Arnaldo Carvalho de Melo20380732005-08-16 02:18:02 -030015#include <net/af_unix.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
17static ctl_table unix_table[] = {
18 {
19 .ctl_name = NET_UNIX_MAX_DGRAM_QLEN,
20 .procname = "max_dgram_qlen",
Pavel Emelyanovd392e492007-12-01 23:44:15 +110021 .data = &init_net.sysctl_unix_max_dgram_qlen,
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 .maxlen = sizeof(int),
23 .mode = 0644,
24 .proc_handler = &proc_dointvec
25 },
26 { .ctl_name = 0 }
27};
28
Pavel Emelyanov1d430b92007-12-01 23:45:41 +110029static struct ctl_path unix_path[] = {
30 { .procname = "net", .ctl_name = CTL_NET, },
31 { .procname = "unix", .ctl_name = NET_UNIX, },
32 { },
Linus Torvalds1da177e2005-04-16 15:20:36 -070033};
34
Pavel Emelyanov97577e32007-12-01 23:40:40 +110035int unix_sysctl_register(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -070036{
Pavel Emelyanov1597fbc2007-12-01 23:51:01 +110037 struct ctl_table *table;
38
39 table = kmemdup(unix_table, sizeof(unix_table), GFP_KERNEL);
40 if (table == NULL)
41 goto err_alloc;
42
43 table[0].data = &net->sysctl_unix_max_dgram_qlen;
44 net->unix_ctl = register_net_sysctl_table(net, unix_path, table);
45 if (net->unix_ctl == NULL)
46 goto err_reg;
47
48 return 0;
49
50err_reg:
51 kfree(table);
52err_alloc:
53 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -070054}
55
Pavel Emelyanov97577e32007-12-01 23:40:40 +110056void unix_sysctl_unregister(struct net *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -070057{
Pavel Emelyanov1597fbc2007-12-01 23:51:01 +110058 struct ctl_table *table;
59
60 table = net->unix_ctl->ctl_table_arg;
61 unregister_sysctl_table(net->unix_ctl);
62 kfree(table);
Linus Torvalds1da177e2005-04-16 15:20:36 -070063}
64