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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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7
drivers/net/wireless/hostap/hostap_main.c
View File

@ -24,6 +24,7 @@
#include <linux/rtnetlink.h>
#include <linux/wireless.h>
#include <linux/etherdevice.h>
#include <net/net_namespace.h>
#include <net/iw_handler.h>
#include <net/ieee80211.h>
#include <net/ieee80211_crypt.h>
@ -1093,8 +1094,8 @@ struct proc_dir_entry *hostap_proc;
static int __init hostap_init(void)
{
if (proc_net != NULL) {
hostap_proc = proc_mkdir("hostap", proc_net);
if (init_net.proc_net != NULL) {
hostap_proc = proc_mkdir("hostap", init_net.proc_net);
if (!hostap_proc)
printk(KERN_WARNING "Failed to mkdir "
"/proc/net/hostap\n");
@ -1109,7 +1110,7 @@ static void __exit hostap_exit(void)
{
if (hostap_proc != NULL) {
hostap_proc = NULL;
remove_proc_entry("hostap", proc_net);
remove_proc_entry("hostap", init_net.proc_net);
}
}