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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/llc/llc_proc.c
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@@ -17,6 +17,7 @@
#include <linux/proc_fs.h>
#include <linux/errno.h>
#include <linux/seq_file.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/llc.h>
#include <net/llc_c_ac.h>
@@ -231,7 +232,7 @@ int __init llc_proc_init(void)
int rc = -ENOMEM;
struct proc_dir_entry *p;
llc_proc_dir = proc_mkdir("llc", proc_net);
llc_proc_dir = proc_mkdir("llc", init_net.proc_net);
if (!llc_proc_dir)
goto out;
llc_proc_dir->owner = THIS_MODULE;
@@ -254,7 +255,7 @@ out:
out_core:
remove_proc_entry("socket", llc_proc_dir);
out_socket:
remove_proc_entry("llc", proc_net);
remove_proc_entry("llc", init_net.proc_net);
goto out;
}
@@ -262,5 +263,5 @@ void llc_proc_exit(void)
{
remove_proc_entry("socket", llc_proc_dir);
remove_proc_entry("core", llc_proc_dir);
remove_proc_entry("llc", proc_net);
remove_proc_entry("llc", init_net.proc_net);
}