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457c4cbc5a
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>
150 lines
3.5 KiB
C
150 lines
3.5 KiB
C
/* $Id: diva_didd.c,v 1.13.6.4 2005/02/11 19:40:25 armin Exp $
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*
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* DIDD Interface module for Eicon active cards.
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*
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* Functions are in dadapter.c
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*
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* Copyright 2002-2003 by Armin Schindler (mac@melware.de)
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* Copyright 2002-2003 Cytronics & Melware (info@melware.de)
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/proc_fs.h>
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#include <net/net_namespace.h>
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#include "platform.h"
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#include "di_defs.h"
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#include "dadapter.h"
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#include "divasync.h"
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#include "did_vers.h"
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static char *main_revision = "$Revision: 1.13.6.4 $";
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static char *DRIVERNAME =
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"Eicon DIVA - DIDD table (http://www.melware.net)";
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static char *DRIVERLNAME = "divadidd";
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char *DRIVERRELEASE_DIDD = "2.0";
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MODULE_DESCRIPTION("DIDD table driver for diva drivers");
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MODULE_AUTHOR("Cytronics & Melware, Eicon Networks");
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MODULE_SUPPORTED_DEVICE("Eicon diva drivers");
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MODULE_LICENSE("GPL");
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#define DBG_MINIMUM (DL_LOG + DL_FTL + DL_ERR)
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#define DBG_DEFAULT (DBG_MINIMUM + DL_XLOG + DL_REG)
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extern int diddfunc_init(void);
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extern void diddfunc_finit(void);
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extern void DIVA_DIDD_Read(void *, int);
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static struct proc_dir_entry *proc_didd;
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struct proc_dir_entry *proc_net_eicon = NULL;
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EXPORT_SYMBOL(DIVA_DIDD_Read);
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EXPORT_SYMBOL(proc_net_eicon);
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static char *getrev(const char *revision)
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{
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char *rev;
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char *p;
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if ((p = strchr(revision, ':'))) {
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rev = p + 2;
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p = strchr(rev, '$');
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*--p = 0;
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} else
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rev = "1.0";
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return rev;
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}
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static int
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proc_read(char *page, char **start, off_t off, int count, int *eof,
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void *data)
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{
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int len = 0;
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char tmprev[32];
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strcpy(tmprev, main_revision);
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len += sprintf(page + len, "%s\n", DRIVERNAME);
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len += sprintf(page + len, "name : %s\n", DRIVERLNAME);
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len += sprintf(page + len, "release : %s\n", DRIVERRELEASE_DIDD);
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len += sprintf(page + len, "build : %s(%s)\n",
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diva_didd_common_code_build, DIVA_BUILD);
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len += sprintf(page + len, "revision : %s\n", getrev(tmprev));
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if (off + count >= len)
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*eof = 1;
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if (len < off)
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return 0;
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*start = page + off;
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return ((count < len - off) ? count : len - off);
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}
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static int DIVA_INIT_FUNCTION create_proc(void)
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{
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proc_net_eicon = proc_mkdir("eicon", init_net.proc_net);
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if (proc_net_eicon) {
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if ((proc_didd =
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create_proc_entry(DRIVERLNAME, S_IFREG | S_IRUGO,
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proc_net_eicon))) {
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proc_didd->read_proc = proc_read;
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}
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return (1);
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}
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return (0);
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}
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static void remove_proc(void)
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{
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remove_proc_entry(DRIVERLNAME, proc_net_eicon);
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remove_proc_entry("eicon", init_net.proc_net);
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}
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static int DIVA_INIT_FUNCTION divadidd_init(void)
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{
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char tmprev[32];
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int ret = 0;
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printk(KERN_INFO "%s\n", DRIVERNAME);
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printk(KERN_INFO "%s: Rel:%s Rev:", DRIVERLNAME, DRIVERRELEASE_DIDD);
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strcpy(tmprev, main_revision);
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printk("%s Build:%s(%s)\n", getrev(tmprev),
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diva_didd_common_code_build, DIVA_BUILD);
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if (!create_proc()) {
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printk(KERN_ERR "%s: could not create proc entry\n",
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DRIVERLNAME);
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ret = -EIO;
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goto out;
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}
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if (!diddfunc_init()) {
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printk(KERN_ERR "%s: failed to connect to DIDD.\n",
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DRIVERLNAME);
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#ifdef MODULE
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remove_proc();
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#endif
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ret = -EIO;
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goto out;
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}
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out:
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return (ret);
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}
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static void DIVA_EXIT_FUNCTION divadidd_exit(void)
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{
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diddfunc_finit();
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remove_proc();
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printk(KERN_INFO "%s: module unloaded.\n", DRIVERLNAME);
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}
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module_init(divadidd_init);
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module_exit(divadidd_exit);
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