/* -*- linux-c -*- * sysctl_net.c: sysctl interface to net subsystem. * * Begun April 1, 1996, Mike Shaver. * Added /proc/sys/net directories for each protocol family. [MS] * * $Log: sysctl_net.c,v $ * Revision 1.2 1996/05/08 20:24:40 shaver * Added bits for NET_BRIDGE and the NET_IPV4_ARP stuff and * NET_IPV4_IP_FORWARD. * * */ #include <linux/mm.h> #include <linux/sysctl.h> #include <linux/nsproxy.h> #include <net/sock.h> #ifdef CONFIG_INET #include <net/ip.h> #endif #ifdef CONFIG_NET #include <linux/if_ether.h> #endif #ifdef CONFIG_TR #include <linux/if_tr.h> #endif static struct list_head * net_ctl_header_lookup(struct ctl_table_root *root, struct nsproxy *namespaces) { return &namespaces->net_ns->sysctl_table_headers; } static struct ctl_table_root net_sysctl_root = { .lookup = net_ctl_header_lookup, }; static int sysctl_net_init(struct net *net) { INIT_LIST_HEAD(&net->sysctl_table_headers); return 0; } static void sysctl_net_exit(struct net *net) { WARN_ON(!list_empty(&net->sysctl_table_headers)); return; } static struct pernet_operations sysctl_pernet_ops = { .init = sysctl_net_init, .exit = sysctl_net_exit, }; static __init int sysctl_init(void) { int ret; ret = register_pernet_subsys(&sysctl_pernet_ops); if (ret) goto out; register_sysctl_root(&net_sysctl_root); out: return ret; } subsys_initcall(sysctl_init); struct ctl_table_header *register_net_sysctl_table(struct net *net, const struct ctl_path *path, struct ctl_table *table) { struct nsproxy namespaces; namespaces = *current->nsproxy; namespaces.net_ns = net; return __register_sysctl_paths(&net_sysctl_root, &namespaces, path, table); } EXPORT_SYMBOL_GPL(register_net_sysctl_table); void unregister_net_sysctl_table(struct ctl_table_header *header) { return unregister_sysctl_table(header); } EXPORT_SYMBOL_GPL(unregister_net_sysctl_table);