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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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17
net/ipv4/fib_trie.c
View File

@@ -73,6 +73,7 @@
#include <linux/netlink.h>
#include <linux/init.h>
#include <linux/list.h>
#include <net/net_namespace.h>
#include <net/ip.h>
#include <net/protocol.h>
#include <net/route.h>
@@ -2530,30 +2531,30 @@ static const struct file_operations fib_route_fops = {
int __init fib_proc_init(void)
{
if (!proc_net_fops_create("fib_trie", S_IRUGO, &fib_trie_fops))
if (!proc_net_fops_create(&init_net, "fib_trie", S_IRUGO, &fib_trie_fops))
goto out1;
if (!proc_net_fops_create("fib_triestat", S_IRUGO, &fib_triestat_fops))
if (!proc_net_fops_create(&init_net, "fib_triestat", S_IRUGO, &fib_triestat_fops))
goto out2;
if (!proc_net_fops_create("route", S_IRUGO, &fib_route_fops))
if (!proc_net_fops_create(&init_net, "route", S_IRUGO, &fib_route_fops))
goto out3;
return 0;
out3:
proc_net_remove("fib_triestat");
proc_net_remove(&init_net, "fib_triestat");
out2:
proc_net_remove("fib_trie");
proc_net_remove(&init_net, "fib_trie");
out1:
return -ENOMEM;
}
void __init fib_proc_exit(void)
{
proc_net_remove("fib_trie");
proc_net_remove("fib_triestat");
proc_net_remove("route");
proc_net_remove(&init_net, "fib_trie");
proc_net_remove(&init_net, "fib_triestat");
proc_net_remove(&init_net, "route");
}
#endif /* CONFIG_PROC_FS */