[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/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");
}