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File: fs/cifs/cifs_debug.c
Instrumentation mode: function-decision-multicondition
TER: 4 % ( 12/337)

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			1	/*
			2	*   fs/cifs_debug.c
			3	*
			4	*   Copyright (C) International Business Machines  Corp., 2000,2005
			5	*
			6	*   Modified by Steve French (sfrench@us.ibm.com)
			7	*
			8	*   This program is free software;  you can redistribute it and/or modify
			9	*   it under the terms of the GNU General Public License as published by
			10	*   the Free Software Foundation; either version 2 of the License, or
			11	*   (at your option) any later version.
			12	*
			13	*   This program is distributed in the hope that it will be useful,
			14	*   but WITHOUT ANY WARRANTY;  without even the implied warranty of
			15	*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
			16	*   the GNU General Public License for more details.
			17	*
			18	*   You should have received a copy of the GNU General Public License
			19	*   along with this program;  if not, write to the Free Software
			20	*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
			21	*/
			22	#include <linux/fs.h>
			23	#include <linux/string.h>
			24	#include <linux/ctype.h>
			25	#include <linux/module.h>
			26	#include <linux/proc_fs.h>
			27	#include <asm/uaccess.h>
			28	#include "cifspdu.h"
			29	#include "cifsglob.h"
			30	#include "cifsproto.h"
			31	#include "cifs_debug.h"
			32	#include "cifsfs.h"
			33
			34	void
0	0	-	35	cifs_dump_mem(char *label, void *data, int length)
			36	{
			37	int i, j;
			38	int *intptr = data;
			39	char *charptr = data;
			40	char buf[10], line[80];
			41
			42	printk(KERN_DEBUG "%s: dump of %d bytes of data at 0x%p\n\n",
			43	label, length, data);
0	0	-	44	for (i = 0; i < length; i += 16) {
			45	line[0] = 0;
0	0	-	46	for (j = 0; (j < 4) && (i + j * 4 < length); j++) {
0		-	46	(T) && (T)
	0	-	46	(T) && (F)
	0	-	46	(F) && (_)
			47	sprintf(buf, " %08x", intptr[i / 4 + j]);
			48	strcat(line, buf);
			49	}
			50	buf[0] = ' ';
			51	buf[2] = 0;
0	0	-	52	for (j = 0; (j < 16) && (i + j < length); j++) {
0		-	52	(T) && (T)
	0	-	52	(T) && (F)
	0	-	52	(F) && (_)
			53	buf[1] = isprint(charptr[i + j]) ? charptr[i + j] : '.';
0	0	-	53	ternary-?: ( ( ( _ctype [ ( int ) ( unsign..
			54	strcat(line, buf);
			55	}
			56	printk(KERN_DEBUG "%s\n", line);
			57	}
			58	}
			59
			60	#ifdef CONFIG_PROC_FS
			61	static int
0	0	-	62	cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
			63	int count, int *eof, void *data)
			64	{
			65	struct list_head *tmp;
			66	struct list_head *tmp1;
			67	struct mid_q_entry * mid_entry;
			68	struct cifsSesInfo *ses;
			69	struct cifsTconInfo *tcon;
			70	int i;
			71	int length = 0;
			72	char * original_buf = buf;
			73
			74	*beginBuffer = buf + offset;
			75
			76
			77	length =
			78	sprintf(buf,
			79	"Display Internal CIFS Data Structures for Debugging\n"
			80	"---------------------------------------------------\n");
			81	buf += length;
			82	length = sprintf(buf,"CIFS Version %s\n",CIFS_VERSION);
			83	buf += length;
			84	length = sprintf(buf,"Active VFS Requests: %d\n", GlobalTotalActiveXid);
			85	buf += length;
			86	length = sprintf(buf, "Servers:");
			87	buf += length;
			88
			89	i = 0;
			90	read_lock(&GlobalSMBSeslock);
			90	do
0	0	-	90	do-while (0)
0	0	-	90	do-while (0)
0	0	-	91	list_for_each(tmp, &GlobalSMBSessionList) {
			92	i++;
			93	ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
			94	if((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
0	0	-	95	(ses->serverNOS == NULL)) {
0		-	95	(T) || (_) || (_)
0		-	95	(F) || (T) || (_)
0		-	95	(F) || (F) || (T)
	0	-	95	(F) || (F) || (F)
			96	buf += sprintf("\nentry for %s not fully displayed\n\t",
			97	ses->serverName);
			98
			99	} else {
			100	length =
			101	sprintf(buf,
			102	"\n%d) Name: %s  Domain: %s Mounts: %d OS: %s  \n\tNOS: %s\tCapability: 0x%x\n\tSMB session status: %d\t",
			103	i, ses->serverName, ses->serverDomain,
			104	atomic_read(&ses->inUse),
			105	ses->serverOS, ses->serverNOS,
			106	ses->capabilities,ses->status);
			107	buf += length;
			108	}
0	0	-	109	if(ses->server) {
			110	buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
			111	ses->server->tcpStatus,
			112	atomic_read(&ses->server->socketUseCount),
			113	ses->server->secMode,
			114	atomic_read(&ses->server->inFlight));
			115
			116	#ifdef CONFIG_CIFS_STATS2
			117	buf += sprintf(buf, " In Send: %d In MaxReq Wait: %d",
			118	atomic_read(&ses->server->inSend),
			119	atomic_read(&ses->server->num_waiters));
			120	#endif
			121
			122	length = sprintf(buf, "\nMIDs:\n");
			123	buf += length;
			124
			125	spin_lock(&GlobalMid_Lock);
			125	do
0	0	-	125	do-while (0)
0	0	-	125	do-while (0)
0	0	-	126	list_for_each(tmp1, &ses->server->pending_mid_q) {
			127	mid_entry = list_entry(tmp1, struct
			128	mid_q_entry,
			129	qhead);
0	0	-	130	if(mid_entry) {
			131	length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",
			132	mid_entry->midState,
			133	(int)mid_entry->command,
			134	mid_entry->pid,
			135	mid_entry->tsk,
			136	mid_entry->mid);
			137	buf += length;
			138	}
			139	}
			140	spin_unlock(&GlobalMid_Lock);
			140	do
0	0	-	140	do-while (0)
0	0	-	140	do-while (0)
			141	}
			142
			143	}
			144	read_unlock(&GlobalSMBSeslock);
			144	do
0	0	-	144	do-while (0)
0	0	-	144	do-while (0)
			145	sprintf(buf, "\n");
			146	buf++;
			147
			148	length = sprintf(buf, "Shares:");
			149	buf += length;
			150
			151	i = 0;
			152	read_lock(&GlobalSMBSeslock);
			152	do
0	0	-	152	do-while (0)
0	0	-	152	do-while (0)
0	0	-	153	list_for_each(tmp, &GlobalTreeConnectionList) {
			154	__u32 dev_type;
			155	i++;
			156	tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
			157	dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
			158	length =
			159	sprintf(buf,
			160	"\n%d) %s Uses: %d Type: %s DevInfo: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
			161	i, tcon->treeName,
			162	atomic_read(&tcon->useCount),
			163	tcon->nativeFileSystem,
			164	le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
			165	le32_to_cpu(tcon->fsAttrInfo.Attributes),
			166	le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
			167	tcon->tidStatus);
			168	buf += length;
0	0	-	169	if (dev_type == FILE_DEVICE_DISK)
			170	length = sprintf(buf, " type: DISK ");
0	0	-	171	else if (dev_type == FILE_DEVICE_CD_ROM)
			172	length = sprintf(buf, " type: CDROM ");
			173	else
			174	length =
			175	sprintf(buf, " type: %d ", dev_type);
			176	buf += length;
0	0	-	177	if(tcon->tidStatus == CifsNeedReconnect) {
			178	buf += sprintf(buf, "\tDISCONNECTED ");
			179	length += 14;
			180	}
			181	}
			182	read_unlock(&GlobalSMBSeslock);
			182	do
0	0	-	182	do-while (0)
0	0	-	182	do-while (0)
			183
			184	length = sprintf(buf, "\n");
			185	buf += length;
			186
			187	/* BB add code to dump additional info such as TCP session info now */
			188	/* Now calculate total size of returned data */
			189	length = buf - original_buf;
			190
0	0	-	191	if(offset + count >= length)
			192	*eof = 1;
0	0	-	193	if(length < offset) {
			194	*eof = 1;
0		-	195	return 0;
			196	} else {
			197	length = length - offset;
			198	}
0	0	-	199	if (length > count)
			200	length = count;
			201
0		-	202	return length;
			203	}
			204
			205	#ifdef CONFIG_CIFS_STATS
			206
			207	static int
			208	cifs_stats_write(struct file *file, const char __user *buffer,
			209	unsigned long count, void *data)
			210	{
			211	char c;
			212	int rc;
			213	struct list_head *tmp;
			214	struct cifsTconInfo *tcon;
			215
			216	rc = get_user(c, buffer);
			217	if (rc)
			218	return rc;
			219
			220	if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
			221	read_lock(&GlobalSMBSeslock);
			222	#ifdef CONFIG_CIFS_STATS2
			223	atomic_set(&totBufAllocCount, 0);
			224	atomic_set(&totSmBufAllocCount, 0);
			225	#endif /* CONFIG_CIFS_STATS2 */
			226	list_for_each(tmp, &GlobalTreeConnectionList) {
			227	tcon = list_entry(tmp, struct cifsTconInfo,
			228	cifsConnectionList);
			229	atomic_set(&tcon->num_smbs_sent, 0);
			230	atomic_set(&tcon->num_writes, 0);
			231	atomic_set(&tcon->num_reads, 0);
			232	atomic_set(&tcon->num_oplock_brks, 0);
			233	atomic_set(&tcon->num_opens, 0);
			234	atomic_set(&tcon->num_closes, 0);
			235	atomic_set(&tcon->num_deletes, 0);
			236	atomic_set(&tcon->num_mkdirs, 0);
			237	atomic_set(&tcon->num_rmdirs, 0);
			238	atomic_set(&tcon->num_renames, 0);
			239	atomic_set(&tcon->num_t2renames, 0);
			240	atomic_set(&tcon->num_ffirst, 0);
			241	atomic_set(&tcon->num_fnext, 0);
			242	atomic_set(&tcon->num_fclose, 0);
			243	atomic_set(&tcon->num_hardlinks, 0);
			244	atomic_set(&tcon->num_symlinks, 0);
			245	atomic_set(&tcon->num_locks, 0);
			246	}
			247	read_unlock(&GlobalSMBSeslock);
			248	}
			249
			250	return count;
			251	}
			252
			253	static int
			254	cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
			255	int count, int *eof, void *data)
			256	{
			257	int item_length,i,length;
			258	struct list_head *tmp;
			259	struct cifsTconInfo *tcon;
			260
			261	*beginBuffer = buf + offset;
			262
			263	length = sprintf(buf,
			264	"Resources in use\nCIFS Session: %d\n",
			265	sesInfoAllocCount.counter);
			266	buf += length;
			267	item_length =
			268	sprintf(buf,"Share (unique mount targets): %d\n",
			269	tconInfoAllocCount.counter);
			270	length += item_length;
			271	buf += item_length;
			272	item_length =
			273	sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
			274	bufAllocCount.counter,
			275	cifs_min_rcv + tcpSesAllocCount.counter);
			276	length += item_length;
			277	buf += item_length;
			278	item_length =
			279	sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
			280	smBufAllocCount.counter,cifs_min_small);
			281	length += item_length;
			282	buf += item_length;
			283	#ifdef CONFIG_CIFS_STATS2
			284	item_length = sprintf(buf, "Total Large %d Small %d Allocations\n",
			285	atomic_read(&totBufAllocCount),
			286	atomic_read(&totSmBufAllocCount));
			287	length += item_length;
			288	buf += item_length;
			289	#endif /* CONFIG_CIFS_STATS2 */
			290
			291	item_length =
			292	sprintf(buf,"Operations (MIDs): %d\n",
			293	midCount.counter);
			294	length += item_length;
			295	buf += item_length;
			296	item_length = sprintf(buf,
			297	"\n%d session %d share reconnects\n",
			298	tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
			299	length += item_length;
			300	buf += item_length;
			301
			302	item_length = sprintf(buf,
			303	"Total vfs operations: %d maximum at one time: %d\n",
			304	GlobalCurrentXid,GlobalMaxActiveXid);
			305	length += item_length;
			306	buf += item_length;
			307
			308	i = 0;
			309	read_lock(&GlobalSMBSeslock);
			310	list_for_each(tmp, &GlobalTreeConnectionList) {
			311	i++;
			312	tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
			313	item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
			314	buf += item_length;
			315	length += item_length;
			316	if(tcon->tidStatus == CifsNeedReconnect) {
			317	buf += sprintf(buf, "\tDISCONNECTED ");
			318	length += 14;
			319	}
			320	item_length = sprintf(buf, "\nSMBs: %d Oplock Breaks: %d",
			321	atomic_read(&tcon->num_smbs_sent),
			322	atomic_read(&tcon->num_oplock_brks));
			323	buf += item_length;
			324	length += item_length;
			325	item_length = sprintf(buf, "\nReads:  %d Bytes: %lld",
			326	atomic_read(&tcon->num_reads),
			327	(long long)(tcon->bytes_read));
			328	buf += item_length;
			329	length += item_length;
			330	item_length = sprintf(buf, "\nWrites: %d Bytes: %lld",
			331	atomic_read(&tcon->num_writes),
			332	(long long)(tcon->bytes_written));
			333	buf += item_length;
			334	length += item_length;
			335	item_length = sprintf(buf,
			336	"\nLocks: %d HardLinks: %d Symlinks: %d",
			337	atomic_read(&tcon->num_locks),
			338	atomic_read(&tcon->num_hardlinks),
			339	atomic_read(&tcon->num_symlinks));
			340	buf += item_length;
			341	length += item_length;
			342
			343	item_length = sprintf(buf, "\nOpens: %d Closes: %d Deletes: %d",
			344	atomic_read(&tcon->num_opens),
			345	atomic_read(&tcon->num_closes),
			346	atomic_read(&tcon->num_deletes));
			347	buf += item_length;
			348	length += item_length;
			349	item_length = sprintf(buf, "\nMkdirs: %d Rmdirs: %d",
			350	atomic_read(&tcon->num_mkdirs),
			351	atomic_read(&tcon->num_rmdirs));
			352	buf += item_length;
			353	length += item_length;
			354	item_length = sprintf(buf, "\nRenames: %d T2 Renames %d",
			355	atomic_read(&tcon->num_renames),
			356	atomic_read(&tcon->num_t2renames));
			357	buf += item_length;
			358	length += item_length;
			359	item_length = sprintf(buf, "\nFindFirst: %d FNext %d FClose %d",
			360	atomic_read(&tcon->num_ffirst),
			361	atomic_read(&tcon->num_fnext),
			362	atomic_read(&tcon->num_fclose));
			363	buf += item_length;
			364	length += item_length;
			365	}
			366	read_unlock(&GlobalSMBSeslock);
			367
			368	buf += sprintf(buf,"\n");
			369	length++;
			370
			371	if(offset + count >= length)
			372	*eof = 1;
			373	if(length < offset) {
			374	*eof = 1;
			375	return 0;
			376	} else {
			377	length = length - offset;
			378	}
			379	if (length > count)
			380	length = count;
			381
			382	return length;
			383	}
			384	#endif
			385
			386	static struct proc_dir_entry *proc_fs_cifs;
			387	read_proc_t cifs_txanchor_read;
			388	static read_proc_t cifsFYI_read;
			389	static write_proc_t cifsFYI_write;
			390	static read_proc_t oplockEnabled_read;
			391	static write_proc_t oplockEnabled_write;
			392	static read_proc_t lookupFlag_read;
			393	static write_proc_t lookupFlag_write;
			394	static read_proc_t traceSMB_read;
			395	static write_proc_t traceSMB_write;
			396	static read_proc_t multiuser_mount_read;
			397	static write_proc_t multiuser_mount_write;
			398	static read_proc_t extended_security_read;
			399	static write_proc_t extended_security_write;
			400	static read_proc_t ntlmv2_enabled_read;
			401	static write_proc_t ntlmv2_enabled_write;
			402	static read_proc_t packet_signing_enabled_read;
			403	static write_proc_t packet_signing_enabled_write;
			404	static read_proc_t experimEnabled_read;
			405	static write_proc_t experimEnabled_write;
			406	static read_proc_t linuxExtensionsEnabled_read;
			407	static write_proc_t linuxExtensionsEnabled_write;
			408
			409	void
6	6		410	cifs_proc_init(void)
			411	{
			412	struct proc_dir_entry *pde;
			413
			414	proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
0	6	-	415	if (proc_fs_cifs == NULL)
0		-	416	return;
			417
			418	proc_fs_cifs->owner = THIS_MODULE;
			419	create_proc_read_entry("DebugData", 0, proc_fs_cifs,
			420	cifs_debug_data_read, NULL);
			421
			422	#ifdef CONFIG_CIFS_STATS
			423	pde = create_proc_read_entry("Stats", 0, proc_fs_cifs,
			424	cifs_stats_read, NULL);
			425	if (pde)
			426	pde->write_proc = cifs_stats_write;
			427	#endif
			428	pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
			429	cifsFYI_read, NULL);
6	0	-	430	if (pde)
			431	pde->write_proc = cifsFYI_write;
			432
			433	pde =
			434	create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
			435	traceSMB_read, NULL);
6	0	-	436	if (pde)
			437	pde->write_proc = traceSMB_write;
			438
			439	pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
			440	oplockEnabled_read, NULL);
6	0	-	441	if (pde)
			442	pde->write_proc = oplockEnabled_write;
			443
			444	pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
			445	experimEnabled_read, NULL);
6	0	-	446	if (pde)
			447	pde->write_proc = experimEnabled_write;
			448
			449	pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
			450	linuxExtensionsEnabled_read, NULL);
6	0	-	451	if (pde)
			452	pde->write_proc = linuxExtensionsEnabled_write;
			453
			454	pde =
			455	create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
			456	multiuser_mount_read, NULL);
6	0	-	457	if (pde)
			458	pde->write_proc = multiuser_mount_write;
			459
			460	pde =
			461	create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
			462	extended_security_read, NULL);
6	0	-	463	if (pde)
			464	pde->write_proc = extended_security_write;
			465
			466	pde =
			467	create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
			468	lookupFlag_read, NULL);
6	0	-	469	if (pde)
			470	pde->write_proc = lookupFlag_write;
			471
			472	pde =
			473	create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
			474	ntlmv2_enabled_read, NULL);
6	0	-	475	if (pde)
			476	pde->write_proc = ntlmv2_enabled_write;
			477
			478	pde =
			479	create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
			480	packet_signing_enabled_read, NULL);
6	0	-	481	if (pde)
			482	pde->write_proc = packet_signing_enabled_write;
			483	}
			484
			485	void
0	0	-	486	cifs_proc_clean(void)
			487	{
0	0	-	488	if (proc_fs_cifs == NULL)
0		-	489	return;
			490
			491	remove_proc_entry("DebugData", proc_fs_cifs);
			492	remove_proc_entry("cifsFYI", proc_fs_cifs);
			493	remove_proc_entry("traceSMB", proc_fs_cifs);
			494	#ifdef CONFIG_CIFS_STATS
			495	remove_proc_entry("Stats", proc_fs_cifs);
			496	#endif
			497	remove_proc_entry("MultiuserMount", proc_fs_cifs);
			498	remove_proc_entry("OplockEnabled", proc_fs_cifs);
			499	remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
			500	remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
			501	remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
			502	remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
			503	remove_proc_entry("Experimental",proc_fs_cifs);
			504	remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
			505	remove_proc_entry("cifs", proc_root_fs);
			506	}
			507
			508	static int
0	0	-	509	cifsFYI_read(char *page, char **start, off_t off, int count,
			510	int *eof, void *data)
			511	{
			512	int len;
			513
			514	len = sprintf(page, "%d\n", cifsFYI);
			515
			516	len -= off;
			517	*start = page + off;
			518
0	0	-	519	if (len > count)
			520	len = count;
			521	else
			522	*eof = 1;
			523
0	0	-	524	if (len < 0)
			525	len = 0;