[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/drivers/net/pppoe.c b/drivers/net/pppoe.c
index 9b30cd6..ee8ce19 100644
--- a/drivers/net/pppoe.c
+++ b/drivers/net/pppoe.c
@@ -78,6 +78,7 @@
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <net/net_namespace.h>
#include <net/sock.h>
#include <asm/uaccess.h>
@@ -1042,7 +1043,7 @@
{
struct proc_dir_entry *p;
- p = create_proc_entry("net/pppoe", S_IRUGO, NULL);
+ p = create_proc_entry("pppoe", S_IRUGO, init_net.proc_net);
if (!p)
return -ENOMEM;
@@ -1113,7 +1114,7 @@
dev_remove_pack(&pppoes_ptype);
dev_remove_pack(&pppoed_ptype);
unregister_netdevice_notifier(&pppoe_notifier);
- remove_proc_entry("net/pppoe", NULL);
+ remove_proc_entry("pppoe", init_net.proc_net);
proto_unregister(&pppoe_sk_proto);
}
