[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/ibmveth.c b/drivers/net/ibmveth.c
index 78e28ad..0c35d72 100644
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -47,6 +47,7 @@
#include <linux/mm.h>
#include <linux/ethtool.h>
#include <linux/proc_fs.h>
+#include <net/net_namespace.h>
#include <asm/semaphore.h>
#include <asm/hvcall.h>
#include <asm/atomic.h>
@@ -97,7 +98,7 @@
static struct kobj_type ktype_veth_pool;
#ifdef CONFIG_PROC_FS
-#define IBMVETH_PROC_DIR "net/ibmveth"
+#define IBMVETH_PROC_DIR "ibmveth"
static struct proc_dir_entry *ibmveth_proc_dir;
#endif
@@ -1091,7 +1092,7 @@
#ifdef CONFIG_PROC_FS
static void ibmveth_proc_register_driver(void)
{
- ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, NULL);
+ ibmveth_proc_dir = proc_mkdir(IBMVETH_PROC_DIR, init_net.proc_net);
if (ibmveth_proc_dir) {
SET_MODULE_OWNER(ibmveth_proc_dir);
}
@@ -1099,7 +1100,7 @@
static void ibmveth_proc_unregister_driver(void)
{
- remove_proc_entry(IBMVETH_PROC_DIR, NULL);
+ remove_proc_entry(IBMVETH_PROC_DIR, init_net.proc_net);
}
static void *ibmveth_seq_start(struct seq_file *seq, loff_t *pos)