linux/net/irda/irproc.c
Eric W. Biederman 457c4cbc5a [NET]: Make /proc/net per network namespace
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>
2007-10-10 16:49:06 -07:00

102 lines
2.6 KiB
C

/*********************************************************************
*
* Filename: irproc.c
* Version: 1.0
* Description: Various entries in the /proc file system
* Status: Experimental.
* Author: Thomas Davis, <ratbert@radiks.net>
* Created at: Sat Feb 21 21:33:24 1998
* Modified at: Sun Nov 14 08:54:54 1999
* Modified by: Dag Brattli <dagb@cs.uit.no>
*
* Copyright (c) 1998-1999, Dag Brattli <dagb@cs.uit.no>
* Copyright (c) 1998, Thomas Davis, <ratbert@radiks.net>,
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* I, Thomas Davis, provide no warranty for any of this software.
* This material is provided "AS-IS" and at no charge.
*
********************************************************************/
#include <linux/miscdevice.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/module.h>
#include <linux/init.h>
#include <net/net_namespace.h>
#include <net/irda/irda.h>
#include <net/irda/irlap.h>
#include <net/irda/irlmp.h>
extern struct file_operations discovery_seq_fops;
extern struct file_operations irlap_seq_fops;
extern struct file_operations irlmp_seq_fops;
extern struct file_operations irttp_seq_fops;
extern struct file_operations irias_seq_fops;
struct irda_entry {
const char *name;
struct file_operations *fops;
};
struct proc_dir_entry *proc_irda;
EXPORT_SYMBOL(proc_irda);
static struct irda_entry irda_dirs[] = {
{"discovery", &discovery_seq_fops},
{"irttp", &irttp_seq_fops},
{"irlmp", &irlmp_seq_fops},
{"irlap", &irlap_seq_fops},
{"irias", &irias_seq_fops},
};
/*
* Function irda_proc_register (void)
*
* Register irda entry in /proc file system
*
*/
void __init irda_proc_register(void)
{
int i;
struct proc_dir_entry *d;
proc_irda = proc_mkdir("irda", init_net.proc_net);
if (proc_irda == NULL)
return;
proc_irda->owner = THIS_MODULE;
for (i=0; i<ARRAY_SIZE(irda_dirs); i++) {
d = create_proc_entry(irda_dirs[i].name, 0, proc_irda);
if (d)
d->proc_fops = irda_dirs[i].fops;
}
}
/*
* Function irda_proc_unregister (void)
*
* Unregister irda entry in /proc file system
*
*/
void irda_proc_unregister(void)
{
int i;
if (proc_irda) {
for (i=0; i<ARRAY_SIZE(irda_dirs); i++)
remove_proc_entry(irda_dirs[i].name, proc_irda);
remove_proc_entry("irda", init_net.proc_net);
proc_irda = NULL;
}
}