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[NET]: Make /proc/net per network namespace

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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>
This commit is contained in:
Eric W. Biederman
2007-09-12 12:01:34 +02:00
committed by David S. Miller
parent 07feaebfcc
commit 457c4cbc5a
84 changed files with 342 additions and 261 deletions
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5
net/8021q/vlanproc.c
View File

@@ -33,6 +33,7 @@
#include <linux/fs.h>
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
#include <net/net_namespace.h>
#include "vlanproc.h"
#include "vlan.h"
@@ -143,7 +144,7 @@ void vlan_proc_cleanup(void)
remove_proc_entry(name_conf, proc_vlan_dir);
if (proc_vlan_dir)
proc_net_remove(name_root);
proc_net_remove(&init_net, name_root);
/* Dynamically added entries should be cleaned up as their vlan_device
* is removed, so we should not have to take care of it here...
@@ -156,7 +157,7 @@ void vlan_proc_cleanup(void)
int __init vlan_proc_init(void)
{
proc_vlan_dir = proc_mkdir(name_root, proc_net);
proc_vlan_dir = proc_mkdir(name_root, init_net.proc_net);
if (proc_vlan_dir) {
proc_vlan_conf = create_proc_entry(name_conf,
S_IFREG|S_IRUSR|S_IWUSR,