1 files changed, 805 insertions, 0 deletions

diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
new file mode 100644
index 000000000000..db28b561cd4b
--- /dev/null
+++ b/fs/cifs/cifs_debug.c
@@ -0,0 +1,805 @@
+/*
+ *   fs/cifs_debug.c
+ *
+ *   Copyright (C) International Business Machines  Corp., 2000,2003
+ *
+ *   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"
+
+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, "Servers:\n");
+        buf += length;
+
+        i = 0;
+        read_lock(&GlobalSMBSeslock);
+        list_for_each(tmp, &GlobalSMBSessionList) {
+                i++;
+                ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
+                length =
+                    sprintf(buf,
+                            "\n%d) Name: %s  Domain: %s Mounts: %d ServerOS: %s  \n\tServerNOS: %s\tCapabilities: 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 Active: %d",
+                                ses->server->tcpStatus,
+                                atomic_read(&ses->server->socketUseCount),
+                                ses->server->secMode,
+                                atomic_read(&ses->server->inFlight));
+                        
+                        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,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, "\nShares:\n");
+        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 Characteristics: 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_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;
+        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,
+                        "\nOpens: %d Deletes: %d\nMkdirs: %d Rmdirs: %d",
+                        atomic_read(&tcon->num_opens),
+                        atomic_read(&tcon->num_deletes),
+                        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;
+        }
+        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 quotaEnabled_read;
+static write_proc_t quotaEnabled_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
+        create_proc_read_entry("Stats", 0, proc_fs_cifs,
+                                cifs_stats_read, NULL);
+#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("ReenableOldCifsReaddirCode", 0, proc_fs_cifs,
+                                quotaEnabled_read, NULL);
+        if (pde)
+                pde->write_proc = quotaEnabled_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("ReenableOldCifsReaddirCode",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;
+
+        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
+quotaEnabled_read(char *page, char **start, off_t off,
+                   int count, int *eof, void *data)
+{
+        int len;
+
+        len = sprintf(page, "%d\n", experimEnabled);
+/* could also check if quotas are enabled in kernel
+        as a whole first */
+        len -= off;
+        *start = page + off;
+
+        if (len > count)
+                len = count;
+        else
+                *eof = 1;
+
+        if (len < 0)
+                len = 0;
+
+        return len;
+}
+static int
+quotaEnabled_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;
+
+        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);
+/* could also check if quotas are enabled in kernel
+        as a whole first */
+        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