aboutsummaryrefslogtreecommitdiffstats
path: root/fs/cifs/cifs_debug.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/cifs/cifs_debug.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/cifs/cifs_debug.c')
-rw-r--r--fs/cifs/cifs_debug.c805
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 00000000000..db28b561cd4
--- /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