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| 1 | #include <linux/sysctl.h> |
| 2 | #include <linux/slab.h> |
| 3 | #include <net/net_namespace.h> |
| 4 | #include <net/xfrm.h> |
| 5 | |
| 6 | static 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 |
| 15 | static 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 | |
| 43 | int __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 | |
| 66 | out_register: |
| 67 | kfree(table); |
| 68 | out_kmemdup: |
| 69 | return -ENOMEM; |
| 70 | } |
| 71 | |
| 72 | void __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 |
| 81 | int __net_init xfrm_sysctl_init(struct net *net) |
| 82 | { |
| 83 | __xfrm_sysctl_init(net); |
| 84 | return 0; |
| 85 | } |
| 86 | #endif |
| 87 |
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Tags:
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v2.6.34-rc5
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