[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/core/dev_mcast.c b/net/core/dev_mcast.c
index 20330c5..8e069fc 100644
--- a/net/core/dev_mcast.c
+++ b/net/core/dev_mcast.c
@@ -41,6 +41,7 @@
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/init.h>
+#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/route.h>
#include <linux/skbuff.h>
@@ -254,7 +255,7 @@
void __init dev_mcast_init(void)
{
- proc_net_fops_create("dev_mcast", 0, &dev_mc_seq_fops);
+ proc_net_fops_create(&init_net, "dev_mcast", 0, &dev_mc_seq_fops);
}
EXPORT_SYMBOL(dev_mc_add);