path: root/fs/cifs/cifs_debug.c

/*
 *   fs/cifs_debug.c
 *
 *   Copyright (C) International Business Machines  Corp., 2000,2005
 *
 *   Modified by Steve French (sfrench@us.ibm.com)
 *
 *   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.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program;  if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <asm/uaccess.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifsfs.h"

void
cifs_dump_mem(char *label, void *data, int length)
{
	int i, j;
	int *intptr = data;
	char *charptr = data;
	char buf[10], line[80];

	printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n",
		label, length, data);
	for (i = 0; i < length; i += 16) {
		line[0] = 0;
		for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
			sprintf(buf, " %08x", intptr[i / 4 + j]);
			strcat(line, buf);
		}
		buf[0] = ' ';
		buf[2] = 0;
		for (j = 0; (j < 16) && (i + j < length); j++) {
			buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
			strcat(line, buf);
		}
		printk(KERN_DEBUG "%s\n", line);
	}
}

#ifdef CONFIG_CIFS_DEBUG2
void cifs_dump_detail(struct smb_hdr *smb)
{
	cERROR(1, ("Cmd: %d Err: 0x%x Flags: 0x%x Flgs2: 0x%x Mid: %d Pid: %d",
		  smb->Command, smb->Status.CifsError,
		  smb->Flags, smb->Flags2, smb->Mid, smb->Pid));
	cERROR(1, ("smb buf %p len %d", smb, smbCalcSize_LE(smb)));
}


void cifs_dump_mids(struct TCP_Server_Info *server)
{
	struct list_head *tmp;
	struct mid_q_entry *mid_entry;

	if (server == NULL)
		return;

	cERROR(1, ("Dump pending requests:"));
	spin_lock(&GlobalMid_Lock);
	list_for_each(tmp, &server->pending_mid_q) {
		mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
		if (mid_entry) {
			cERROR(1, ("State: %d Cmd: %d Pid: %d Tsk: %p Mid %d",
				mid_entry->midState,
				(int)mid_entry->command,
				mid_entry->pid,
				mid_entry->tsk,
				mid_entry->mid));
#ifdef CONFIG_CIFS_STATS2
			cERROR(1, ("IsLarge: %d buf: %p time rcv: %ld now: %ld",
				mid_entry->largeBuf,
				mid_entry->resp_buf,
				mid_entry->when_received,
				jiffies));
#endif /* STATS2 */
			cERROR(1, ("IsMult: %d IsEnd: %d", mid_entry->multiRsp,
				  mid_entry->multiEnd));
			if (mid_entry->resp_buf) {
				cifs_dump_detail(mid_entry->resp_buf);
				cifs_dump_mem("existing buf: ",
					mid_entry->resp_buf,
					62 /* fixme */);
			}
		}
	}
	spin_unlock(&GlobalMid_Lock);
}
#endif /* CONFIG_CIFS_DEBUG2 */

#ifdef CONFIG_PROC_FS
static int
cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
		     int count, int *eof, void *data)
{
	struct list_head *tmp;
	struct list_head *tmp1;
	struct mid_q_entry *mid_entry;
	struct cifsSesInfo *ses;
	struct cifsTconInfo *tcon;
	int i;
	int length = 0;
	char *original_buf = buf;

	*beginBuffer = buf + offset;

	length =
	    sprintf(buf,
		    "Display Internal CIFS Data Structures for Debugging\n"
		    "---------------------------------------------------\n");
	buf += length;
	length = sprintf(buf, "CIFS Version %s\n", CIFS_VERSION);
	buf += length;
	length = sprintf(buf,
		"Active VFS Requests: %d\n", GlobalTotalActiveXid);
	buf += length;
	length = sprintf(buf, "Servers:");
	buf += length;

	i = 0;
	read_lock(&GlobalSMBSeslock);
	list_for_each(tmp, &GlobalSMBSessionList) {
		i++;
		ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
		if ((ses->serverDomain == NULL) || (ses->serve