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linux/fs/cifs/cifs_debug.c

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/*
* 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\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_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->serverOS == NULL) ||
(ses->serverNOS == NULL)) {
buf += sprintf("\nentry for %s not fully displayed\n\t",
ses->serverName);
} else {
length =
sprintf(buf,
"\n%d) Name: %s Domain: %s Mounts: %d OS: %s \n\tNOS: %s\tCapability: 0x%x\n\tSMB session status: %d\t",
i, ses->serverName, ses->serverDomain,
atomic_read(&ses->inUse),
ses->serverOS, ses->serverNOS,
ses->capabilities,ses->status);
buf += length;
}
if(ses->server) {
buf += sprintf(buf, "TCP status: %d\n\tLocal Users To Server: %d SecMode: 0x%x Req On Wire: %d",
ses->server->tcpStatus,
atomic_read(&ses->server->socketUseCount),
ses->server->secMode,
atomic_read(&ses->server->inFlight));
#ifdef CONFIG_CIFS_STATS2
buf += sprintf(buf, " In Send: %d In MaxReq Wait: %d",
atomic_read(&ses->server->inSend),
atomic_read(&ses->server->num_waiters));
#endif
length = sprintf(buf, "\nMIDs:\n");
buf += length;
spin_lock(&GlobalMid_Lock);
list_for_each(tmp1, &ses->server->pending_mid_q) {
mid_entry = list_entry(tmp1, struct
mid_q_entry,
qhead);
if(mid_entry) {
length = sprintf(buf,"State: %d com: %d pid: %d tsk: %p mid %d\n",
mid_entry->midState,
(int)mid_entry->command,
mid_entry->pid,
mid_entry->tsk,
mid_entry->mid);
buf += length;
}
}
spin_unlock(&GlobalMid_Lock);
}
}
read_unlock(&GlobalSMBSeslock);
sprintf(buf, "\n");
buf++;
length = sprintf(buf, "Shares:");
buf += length;
i = 0;
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalTreeConnectionList) {
__u32 dev_type;
i++;
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
length =
sprintf(buf,
"\n%d) %s Uses: %d Type: %s DevInfo: 0x%x Attributes: 0x%x\nPathComponentMax: %d Status: %d",
i, tcon->treeName,
atomic_read(&tcon->useCount),
tcon->nativeFileSystem,
le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
le32_to_cpu(tcon->fsAttrInfo.Attributes),
le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
tcon->tidStatus);
buf += length;
if (dev_type == FILE_DEVICE_DISK)
length = sprintf(buf, " type: DISK ");
else if (dev_type == FILE_DEVICE_CD_ROM)
length = sprintf(buf, " type: CDROM ");
else
length =
sprintf(buf, " type: %d ", dev_type);
buf += length;
if(tcon->tidStatus == CifsNeedReconnect) {
buf += sprintf(buf, "\tDISCONNECTED ");
length += 14;
}
}
read_unlock(&GlobalSMBSeslock);
length = sprintf(buf, "\n");
buf += length;
/* BB add code to dump additional info such as TCP session info now */
/* Now calculate total size of returned data */
length = buf - original_buf;
if(offset + count >= length)
*eof = 1;
if(length < offset) {
*eof = 1;
return 0;
} else {
length = length - offset;
}
if (length > count)
length = count;
return length;
}
#ifdef CONFIG_CIFS_STATS
static int
cifs_stats_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
struct list_head *tmp;
struct cifsTconInfo *tcon;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
read_lock(&GlobalSMBSeslock);
#ifdef CONFIG_CIFS_STATS2
atomic_set(&totBufAllocCount, 0);
atomic_set(&totSmBufAllocCount, 0);
#endif /* CONFIG_CIFS_STATS2 */
list_for_each(tmp, &GlobalTreeConnectionList) {
tcon = list_entry(tmp, struct cifsTconInfo,
cifsConnectionList);
atomic_set(&tcon->num_smbs_sent, 0);
atomic_set(&tcon->num_writes, 0);
atomic_set(&tcon->num_reads, 0);
atomic_set(&tcon->num_oplock_brks, 0);
atomic_set(&tcon->num_opens, 0);
atomic_set(&tcon->num_closes, 0);
atomic_set(&tcon->num_deletes, 0);
atomic_set(&tcon->num_mkdirs, 0);
atomic_set(&tcon->num_rmdirs, 0);
atomic_set(&tcon->num_renames, 0);
atomic_set(&tcon->num_t2renames, 0);
atomic_set(&tcon->num_ffirst, 0);
atomic_set(&tcon->num_fnext, 0);
atomic_set(&tcon->num_fclose, 0);
atomic_set(&tcon->num_hardlinks, 0);
atomic_set(&tcon->num_symlinks, 0);
atomic_set(&tcon->num_locks, 0);
}
read_unlock(&GlobalSMBSeslock);
}
return count;
}
static int
cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
int count, int *eof, void *data)
{
int item_length,i,length;
struct list_head *tmp;
struct cifsTconInfo *tcon;
*beginBuffer = buf + offset;
length = sprintf(buf,
"Resources in use\nCIFS Session: %d\n",
sesInfoAllocCount.counter);
buf += length;
item_length =
sprintf(buf,"Share (unique mount targets): %d\n",
tconInfoAllocCount.counter);
length += item_length;
buf += item_length;
item_length =
sprintf(buf,"SMB Request/Response Buffer: %d Pool size: %d\n",
bufAllocCount.counter,
cifs_min_rcv + tcpSesAllocCount.counter);
length += item_length;
buf += item_length;
item_length =
sprintf(buf,"SMB Small Req/Resp Buffer: %d Pool size: %d\n",
smBufAllocCount.counter,cifs_min_small);
length += item_length;
buf += item_length;
#ifdef CONFIG_CIFS_STATS2
item_length = sprintf(buf, "Total Large %d Small %d Allocations\n",
atomic_read(&totBufAllocCount),
atomic_read(&totSmBufAllocCount));
length += item_length;
buf += item_length;
#endif /* CONFIG_CIFS_STATS2 */
item_length =
sprintf(buf,"Operations (MIDs): %d\n",
midCount.counter);
length += item_length;
buf += item_length;
item_length = sprintf(buf,
"\n%d session %d share reconnects\n",
tcpSesReconnectCount.counter,tconInfoReconnectCount.counter);
length += item_length;
buf += item_length;
item_length = sprintf(buf,
"Total vfs operations: %d maximum at one time: %d\n",
GlobalCurrentXid,GlobalMaxActiveXid);
length += item_length;
buf += item_length;
i = 0;
read_lock(&GlobalSMBSeslock);
list_for_each(tmp, &GlobalTreeConnectionList) {
i++;
tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
item_length = sprintf(buf,"\n%d) %s",i, tcon->treeName);
buf += item_length;
length += item_length;
if(tcon->tidStatus == CifsNeedReconnect) {
buf += sprintf(buf, "\tDISCONNECTED ");
length += 14;
}
item_length = sprintf(buf, "\nSMBs: %d Oplock Breaks: %d",
atomic_read(&tcon->num_smbs_sent),
atomic_read(&tcon->num_oplock_brks));
buf += item_length;
length += item_length;
item_length = sprintf(buf, "\nReads: %d Bytes: %lld",
atomic_read(&tcon->num_reads),
(long long)(tcon->bytes_read));
buf += item_length;
length += item_length;
item_length = sprintf(buf, "\nWrites: %d Bytes: %lld",
atomic_read(&tcon->num_writes),
(long long)(tcon->bytes_written));
buf += item_length;
length += item_length;
item_length = sprintf(buf,
"\nLocks: %d HardLinks: %d Symlinks: %d",
atomic_read(&tcon->num_locks),
atomic_read(&tcon->num_hardlinks),
atomic_read(&tcon->num_symlinks));
buf += item_length;
length += item_length;
item_length = sprintf(buf, "\nOpens: %d Closes: %d Deletes: %d",
atomic_read(&tcon->num_opens),
atomic_read(&tcon->num_closes),
atomic_read(&tcon->num_deletes));
buf += item_length;
length += item_length;
item_length = sprintf(buf, "\nMkdirs: %d Rmdirs: %d",
atomic_read(&tcon->num_mkdirs),
atomic_read(&tcon->num_rmdirs));
buf += item_length;
length += item_length;
item_length = sprintf(buf, "\nRenames: %d T2 Renames %d",
atomic_read(&tcon->num_renames),
atomic_read(&tcon->num_t2renames));
buf += item_length;
length += item_length;
item_length = sprintf(buf, "\nFindFirst: %d FNext %d FClose %d",
atomic_read(&tcon->num_ffirst),
atomic_read(&tcon->num_fnext),
atomic_read(&tcon->num_fclose));
buf += item_length;
length += item_length;
}
read_unlock(&GlobalSMBSeslock);
buf += sprintf(buf,"\n");
length++;
if(offset + count >= length)
*eof = 1;
if(length < offset) {
*eof = 1;
return 0;
} else {
length = length - offset;
}
if (length > count)
length = count;
return length;
}
#endif
static struct proc_dir_entry *proc_fs_cifs;
read_proc_t cifs_txanchor_read;
static read_proc_t cifsFYI_read;
static write_proc_t cifsFYI_write;
static read_proc_t oplockEnabled_read;
static write_proc_t oplockEnabled_write;
static read_proc_t lookupFlag_read;
static write_proc_t lookupFlag_write;
static read_proc_t traceSMB_read;
static write_proc_t traceSMB_write;
static read_proc_t multiuser_mount_read;
static write_proc_t multiuser_mount_write;
static read_proc_t extended_security_read;
static write_proc_t extended_security_write;
static read_proc_t ntlmv2_enabled_read;
static write_proc_t ntlmv2_enabled_write;
static read_proc_t packet_signing_enabled_read;
static write_proc_t packet_signing_enabled_write;
static read_proc_t experimEnabled_read;
static write_proc_t experimEnabled_write;
static read_proc_t linuxExtensionsEnabled_read;
static write_proc_t linuxExtensionsEnabled_write;
void
cifs_proc_init(void)
{
struct proc_dir_entry *pde;
proc_fs_cifs = proc_mkdir("cifs", proc_root_fs);
if (proc_fs_cifs == NULL)
return;
proc_fs_cifs->owner = THIS_MODULE;
create_proc_read_entry("DebugData", 0, proc_fs_cifs,
cifs_debug_data_read, NULL);
#ifdef CONFIG_CIFS_STATS
pde = create_proc_read_entry("Stats", 0, proc_fs_cifs,
cifs_stats_read, NULL);
if (pde)
pde->write_proc = cifs_stats_write;
#endif
pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
cifsFYI_read, NULL);
if (pde)
pde->write_proc = cifsFYI_write;
pde =
create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
traceSMB_read, NULL);
if (pde)
pde->write_proc = traceSMB_write;
pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
oplockEnabled_read, NULL);
if (pde)
pde->write_proc = oplockEnabled_write;
pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
experimEnabled_read, NULL);
if (pde)
pde->write_proc = experimEnabled_write;
pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
linuxExtensionsEnabled_read, NULL);
if (pde)
pde->write_proc = linuxExtensionsEnabled_write;
pde =
create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
multiuser_mount_read, NULL);
if (pde)
pde->write_proc = multiuser_mount_write;
pde =
create_proc_read_entry("ExtendedSecurity", 0, proc_fs_cifs,
extended_security_read, NULL);
if (pde)
pde->write_proc = extended_security_write;
pde =
create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
lookupFlag_read, NULL);
if (pde)
pde->write_proc = lookupFlag_write;
pde =
create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
ntlmv2_enabled_read, NULL);
if (pde)
pde->write_proc = ntlmv2_enabled_write;
pde =
create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
packet_signing_enabled_read, NULL);
if (pde)
pde->write_proc = packet_signing_enabled_write;
}
void
cifs_proc_clean(void)
{
if (proc_fs_cifs == NULL)
return;
remove_proc_entry("DebugData", proc_fs_cifs);
remove_proc_entry("cifsFYI", proc_fs_cifs);
remove_proc_entry("traceSMB", proc_fs_cifs);
#ifdef CONFIG_CIFS_STATS
remove_proc_entry("Stats", proc_fs_cifs);
#endif
remove_proc_entry("MultiuserMount", proc_fs_cifs);
remove_proc_entry("OplockEnabled", proc_fs_cifs);
remove_proc_entry("NTLMV2Enabled",proc_fs_cifs);
remove_proc_entry("ExtendedSecurity",proc_fs_cifs);
remove_proc_entry("PacketSigningEnabled",proc_fs_cifs);
remove_proc_entry("LinuxExtensionsEnabled",proc_fs_cifs);
remove_proc_entry("Experimental",proc_fs_cifs);
remove_proc_entry("LookupCacheEnabled",proc_fs_cifs);
remove_proc_entry("cifs", proc_root_fs);
}
static int
cifsFYI_read(char *page, char **start, off_t off, int count,
int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", cifsFYI);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
cifsFYI_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
cifsFYI = 0;
else if (c == '1' || c == 'y' || c == 'Y')
cifsFYI = 1;
else if((c > '1') && (c <= '9'))
cifsFYI = (int) (c - '0'); /* see cifs_debug.h for meanings */
return count;
}
static int
oplockEnabled_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", oplockEnabled);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
oplockEnabled_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
oplockEnabled = 0;
else if (c == '1' || c == 'y' || c == 'Y')
oplockEnabled = 1;
return count;
}
static int
experimEnabled_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", experimEnabled);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
experimEnabled_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
experimEnabled = 0;
else if (c == '1' || c == 'y' || c == 'Y')
experimEnabled = 1;
else if (c == '2')
experimEnabled = 2;
return count;
}
static int
linuxExtensionsEnabled_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", linuxExtEnabled);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
linuxExtEnabled = 0;
else if (c == '1' || c == 'y' || c == 'Y')
linuxExtEnabled = 1;
return count;
}
static int
lookupFlag_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", lookupCacheEnabled);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
lookupFlag_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
lookupCacheEnabled = 0;
else if (c == '1' || c == 'y' || c == 'Y')
lookupCacheEnabled = 1;
return count;
}
static int
traceSMB_read(char *page, char **start, off_t off, int count,
int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", traceSMB);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
traceSMB_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
traceSMB = 0;
else if (c == '1' || c == 'y' || c == 'Y')
traceSMB = 1;
return count;
}
static int
multiuser_mount_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", multiuser_mount);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
multiuser_mount_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
multiuser_mount = 0;
else if (c == '1' || c == 'y' || c == 'Y')
multiuser_mount = 1;
return count;
}
static int
extended_security_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", extended_security);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
extended_security_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
extended_security = 0;
else if (c == '1' || c == 'y' || c == 'Y')
extended_security = 1;
return count;
}
static int
ntlmv2_enabled_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", ntlmv2_support);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
ntlmv2_enabled_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
ntlmv2_support = 0;
else if (c == '1' || c == 'y' || c == 'Y')
ntlmv2_support = 1;
return count;
}
static int
packet_signing_enabled_read(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int len;
len = sprintf(page, "%d\n", sign_CIFS_PDUs);
len -= off;
*start = page + off;
if (len > count)
len = count;
else
*eof = 1;
if (len < 0)
len = 0;
return len;
}
static int
packet_signing_enabled_write(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
char c;
int rc;
rc = get_user(c, buffer);
if (rc)
return rc;
if (c == '0' || c == 'n' || c == 'N')
sign_CIFS_PDUs = 0;
else if (c == '1' || c == 'y' || c == 'Y')
sign_CIFS_PDUs = 1;
else if (c == '2')
sign_CIFS_PDUs = 2;
return count;
}
#endif
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