[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/wanrouter/wanproc.c b/net/wanrouter/wanproc.c
index 236e7ea..f2e54c3 100644
--- a/net/wanrouter/wanproc.c
+++ b/net/wanrouter/wanproc.c
@@ -29,6 +29,7 @@
#include <linux/seq_file.h>
#include <linux/smp_lock.h>
+#include <net/net_namespace.h>
#include <asm/io.h>
#define PROC_STATS_FORMAT "%30s: %12lu\n"
@@ -287,7 +288,7 @@
int __init wanrouter_proc_init(void)
{
struct proc_dir_entry *p;
- proc_router = proc_mkdir(ROUTER_NAME, proc_net);
+ proc_router = proc_mkdir(ROUTER_NAME, init_net.proc_net);
if (!proc_router)
goto fail;
@@ -303,7 +304,7 @@
fail_stat:
remove_proc_entry("config", proc_router);
fail_config:
- remove_proc_entry(ROUTER_NAME, proc_net);
+ remove_proc_entry(ROUTER_NAME, init_net.proc_net);
fail:
return -ENOMEM;
}
@@ -316,7 +317,7 @@
{
remove_proc_entry("config", proc_router);
remove_proc_entry("status", proc_router);
- remove_proc_entry(ROUTER_NAME, proc_net);
+ remove_proc_entry(ROUTER_NAME, init_net.proc_net);
}
/*