[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/net/sysctl_net.c b/ap/os/linux/linux-3.4.x/net/sysctl_net.c
new file mode 100644
index 0000000..c3e65ae
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/sysctl_net.c
@@ -0,0 +1,124 @@
+/* -*- 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]
+ *
+ * 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/export.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 ctl_table_set *
+net_ctl_header_lookup(struct ctl_table_root *root, struct nsproxy *namespaces)
+{
+ return &namespaces->net_ns->sysctls;
+}
+
+static int is_seen(struct ctl_table_set *set)
+{
+ return ¤t->nsproxy->net_ns->sysctls == set;
+}
+
+/* Return standard mode bits for table entry. */
+static int net_ctl_permissions(struct ctl_table_root *root,
+ struct nsproxy *nsproxy,
+ struct ctl_table *table)
+{
+ /* Allow network administrator to have same access as root. */
+ if (capable(CAP_NET_ADMIN)) {
+ int mode = (table->mode >> 6) & 7;
+ return (mode << 6) | (mode << 3) | mode;
+ }
+ return table->mode;
+}
+
+static struct ctl_table_root net_sysctl_root = {
+ .lookup = net_ctl_header_lookup,
+ .permissions = net_ctl_permissions,
+};
+
+static int net_ctl_ro_header_perms(struct ctl_table_root *root,
+ struct nsproxy *namespaces, struct ctl_table *table)
+{
+ if (net_eq(namespaces->net_ns, &init_net))
+ return table->mode;
+ else
+ return table->mode & ~0222;
+}
+
+static struct ctl_table_root net_sysctl_ro_root = {
+ .permissions = net_ctl_ro_header_perms,
+};
+
+static int __net_init sysctl_net_init(struct net *net)
+{
+ setup_sysctl_set(&net->sysctls, &net_sysctl_root, is_seen);
+ return 0;
+}
+
+static void __net_exit sysctl_net_exit(struct net *net)
+{
+ retire_sysctl_set(&net->sysctls);
+}
+
+static struct pernet_operations sysctl_pernet_ops = {
+ .init = sysctl_net_init,
+ .exit = sysctl_net_exit,
+};
+
+static __init int net_sysctl_init(void)
+{
+ int ret;
+ ret = register_pernet_subsys(&sysctl_pernet_ops);
+ if (ret)
+ goto out;
+ setup_sysctl_set(&net_sysctl_ro_root.default_set, &net_sysctl_ro_root, NULL);
+ register_sysctl_root(&net_sysctl_ro_root);
+ register_sysctl_root(&net_sysctl_root);
+out:
+ return ret;
+}
+subsys_initcall(net_sysctl_init);
+
+struct ctl_table_header *register_net_sysctl_table(struct net *net,
+ const struct ctl_path *path, struct ctl_table *table)
+{
+ return __register_sysctl_paths(&net->sysctls, path, table);
+}
+EXPORT_SYMBOL_GPL(register_net_sysctl_table);
+
+struct ctl_table_header *register_net_sysctl_rotable(const
+ struct ctl_path *path, struct ctl_table *table)
+{
+ return __register_sysctl_paths(&net_sysctl_ro_root.default_set,
+ path, table);
+}
+EXPORT_SYMBOL_GPL(register_net_sysctl_rotable);
+
+void unregister_net_sysctl_table(struct ctl_table_header *header)
+{
+ unregister_sysctl_table(header);
+}
+EXPORT_SYMBOL_GPL(unregister_net_sysctl_table);