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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
net/wanrouter/wanproc.c
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@ -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 @@ static const struct file_operations wandev_fops = {
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 @@ int __init wanrouter_proc_init(void)
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 @@ void wanrouter_proc_cleanup(void)
{
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);
}
/*