[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);
}