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1 | /* |
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/slab.h> |
14 | #include <linux/sysctl.h> |
15 | |
16 | #include <net/af_unix.h> |
17 | |
18 | static struct ctl_table unix_table[] = { |
19 | { |
20 | .procname = "max_dgram_qlen", |
21 | .data = &init_net.unx.sysctl_max_dgram_qlen, |
22 | .maxlen = sizeof(int), |
23 | .mode = 0644, |
24 | .proc_handler = proc_dointvec |
25 | }, |
26 | { } |
27 | }; |
28 | |
29 | int __net_init unix_sysctl_register(struct net *net) |
30 | { |
31 | struct ctl_table *table; |
32 | |
33 | table = kmemdup(unix_table, sizeof(unix_table), GFP_KERNEL); |
34 | if (table == NULL) |
35 | goto err_alloc; |
36 | |
37 | /* Don't export sysctls to unprivileged users */ |
38 | if (net->user_ns != &init_user_ns) |
39 | table[0].procname = NULL; |
40 | |
41 | table[0].data = &net->unx.sysctl_max_dgram_qlen; |
42 | net->unx.ctl = register_net_sysctl(net, "net/unix", table); |
43 | if (net->unx.ctl == NULL) |
44 | goto err_reg; |
45 | |
46 | return 0; |
47 | |
48 | err_reg: |
49 | kfree(table); |
50 | err_alloc: |
51 | return -ENOMEM; |
52 | } |
53 | |
54 | void unix_sysctl_unregister(struct net *net) |
55 | { |
56 | struct ctl_table *table; |
57 | |
58 | table = net->unx.ctl->ctl_table_arg; |
59 | unregister_net_sysctl_table(net->unx.ctl); |
60 | kfree(table); |
61 | } |
62 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9