[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/802/tr.c b/net/802/tr.c
index e56e61a..032c31e 100644
--- a/net/802/tr.c
+++ b/net/802/tr.c
@@ -36,6 +36,7 @@
#include <linux/seq_file.h>
#include <linux/init.h>
#include <net/arp.h>
+#include <net/net_namespace.h>
static void tr_add_rif_info(struct trh_hdr *trh, struct net_device *dev);
static void rif_check_expire(unsigned long dummy);
@@ -639,7 +640,7 @@
rif_timer.function = rif_check_expire;
add_timer(&rif_timer);
- proc_net_fops_create("tr_rif", S_IRUGO, &rif_seq_fops);
+ proc_net_fops_create(&init_net, "tr_rif", S_IRUGO, &rif_seq_fops);
return 0;
}