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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/ipv6/addrconf.c
View File

@@ -62,6 +62,7 @@
#include <linux/notifier.h>
#include <linux/string.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/snmp.h>
@@ -2827,14 +2828,14 @@ static const struct file_operations if6_fops = {
int __init if6_proc_init(void)
{
if (!proc_net_fops_create("if_inet6", S_IRUGO, &if6_fops))
if (!proc_net_fops_create(&init_net, "if_inet6", S_IRUGO, &if6_fops))
return -ENOMEM;
return 0;
}
void if6_proc_exit(void)
{
proc_net_remove("if_inet6");
proc_net_remove(&init_net, "if_inet6");
}
#endif /* CONFIG_PROC_FS */
@@ -4293,6 +4294,6 @@ void __exit addrconf_cleanup(void)
rtnl_unlock();
#ifdef CONFIG_PROC_FS
proc_net_remove("if_inet6");
proc_net_remove(&init_net, "if_inet6");
#endif
}