[NET]: Make /proc/net per network namespace
This patch makes /proc/net per network namespace. It modifies the global
variables proc_net and proc_net_stat to be per network namespace.
The proc_net file helpers are modified to take a network namespace argument,
and all of their callers are fixed to pass &init_net for that argument.
This ensures that all of the /proc/net files are only visible and
usable in the initial network namespace until the code behind them
has been updated to be handle multiple network namespaces.
Making /proc/net per namespace is necessary as at least some files
in /proc/net depend upon the set of network devices which is per
network namespace, and even more files in /proc/net have contents
that are relevant to a single network namespace.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index ed76d4a..625d595 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -128,6 +128,7 @@
#include <linux/stat.h>
#include <linux/init.h>
#include <linux/poll.h>
+#include <net/net_namespace.h>
#include <net/neighbour.h>
#include <net/dst.h>
#include <net/fib_rules.h>
@@ -2399,7 +2400,7 @@
dev_add_pack(&dn_dix_packet_type);
register_netdevice_notifier(&dn_dev_notifier);
- proc_net_fops_create("decnet", S_IRUGO, &dn_socket_seq_fops);
+ proc_net_fops_create(&init_net, "decnet", S_IRUGO, &dn_socket_seq_fops);
dn_register_sysctl();
out:
return rc;
@@ -2428,7 +2429,7 @@
dn_neigh_cleanup();
dn_fib_cleanup();
- proc_net_remove("decnet");
+ proc_net_remove(&init_net, "decnet");
proto_unregister(&dn_proto);
}
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 8def682..83cb076 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -42,6 +42,7 @@
#include <linux/notifier.h>
#include <asm/uaccess.h>
#include <asm/system.h>
+#include <net/net_namespace.h>
#include <net/neighbour.h>
#include <net/dst.h>
#include <net/flow.h>
@@ -1462,7 +1463,7 @@
rtnl_register(PF_DECnet, RTM_DELADDR, dn_nl_deladdr, NULL);
rtnl_register(PF_DECnet, RTM_GETADDR, NULL, dn_nl_dump_ifaddr);
- proc_net_fops_create("decnet_dev", S_IRUGO, &dn_dev_seq_fops);
+ proc_net_fops_create(&init_net, "decnet_dev", S_IRUGO, &dn_dev_seq_fops);
#ifdef CONFIG_SYSCTL
{
@@ -1483,7 +1484,7 @@
}
#endif /* CONFIG_SYSCTL */
- proc_net_remove("decnet_dev");
+ proc_net_remove(&init_net, "decnet_dev");
dn_dev_devices_off();
}
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 174d8a7..a424a8d 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -38,6 +38,7 @@
#include <linux/rcupdate.h>
#include <linux/jhash.h>
#include <asm/atomic.h>
+#include <net/net_namespace.h>
#include <net/neighbour.h>
#include <net/dst.h>
#include <net/flow.h>
@@ -611,11 +612,11 @@
void __init dn_neigh_init(void)
{
neigh_table_init(&dn_neigh_table);
- proc_net_fops_create("decnet_neigh", S_IRUGO, &dn_neigh_seq_fops);
+ proc_net_fops_create(&init_net, "decnet_neigh", S_IRUGO, &dn_neigh_seq_fops);
}
void __exit dn_neigh_cleanup(void)
{
- proc_net_remove("decnet_neigh");
+ proc_net_remove(&init_net, "decnet_neigh");
neigh_table_clear(&dn_neigh_table);
}
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index a4a6209..4cfea95 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -77,6 +77,7 @@
#include <linux/rcupdate.h>
#include <linux/times.h>
#include <asm/errno.h>
+#include <net/net_namespace.h>
#include <net/netlink.h>
#include <net/neighbour.h>
#include <net/dst.h>
@@ -1814,7 +1815,7 @@
dn_dst_ops.gc_thresh = (dn_rt_hash_mask + 1);
- proc_net_fops_create("decnet_cache", S_IRUGO, &dn_rt_cache_seq_fops);
+ proc_net_fops_create(&init_net, "decnet_cache", S_IRUGO, &dn_rt_cache_seq_fops);
#ifdef CONFIG_DECNET_ROUTER
rtnl_register(PF_DECnet, RTM_GETROUTE, dn_cache_getroute, dn_fib_dump);
@@ -1829,6 +1830,6 @@
del_timer(&dn_route_timer);
dn_run_flush(0);
- proc_net_remove("decnet_cache");
+ proc_net_remove(&init_net, "decnet_cache");
}