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samba-mirror/source3/modules/vfs_smb_traffic_analyzer.c
Holger Hetterich 81c6b878b1 Added an exact description of the V2 protocol.
I don't think it should have it's place the man page, because this is
developer information.
2010-03-16 09:52:09 -04:00

785 lines
22 KiB
C

/*
* traffic-analyzer VFS module. Measure the smb traffic users create
* on the net.
*
* Copyright (C) Holger Hetterich, 2008
* Copyright (C) Jeremy Allison, 2008
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "../lib/crypto/crypto.h"
/* abstraction for the send_over_network function */
enum sock_type {INTERNET_SOCKET = 0, UNIX_DOMAIN_SOCKET};
#define LOCAL_PATHNAME "/var/tmp/stadsocket"
/*
* Protocol version 2.0 description
*
* The following table shows the exact assembly of the 2.0 protocol.
*
* -->Header<--
* The protocol header is always send first, and contains various
* information about the data block to come.
* The header is always of fixed length, and will be send unencrypted.
*
* Byte Number/Bytes Description
* 00-02 Contains always the string "V2."
* 03 This byte contains a possible subrelease number of the
* protocol. This enables the receiver to make a version
* check to ensure the compatibility and allows us to
* release 2.x versions of the protocol with bugfixes or
* enhancements.
* 04 Usually, this byte contains the character '0'. If the
* VFS module is configured for anonymization, this is
* set to 'A'. This information can be useful for the
* receiver.
* 05 Usually, this byte contains the character '0'. If the
* VFS module is configured for encryption of the data,
* this byte is set to 'E'.
* 06-09 These bytes contain the character '0' by default, and
* are reserved for possible future extensions. They have
* no function in 2.0.
* 10-27 17 bytes containing a string representation of the
* number of bytes to come in the following data block.
* It is right aligned and filled from the left with '0'.
*
* -->Data Block<--
* The data block is send immediately after the header was send. It's length
* is exactly what was given in bytes 11-28 from in the header.
*
* The data block may be send encrypted.
*
* To make the data block easy for the receiver to read, it is divided into
* several sub-blocks, each with it's own header of four byte length. In each
* of the sub-headers, a string representation of the length of this block is
* to be found.
*
* Thus the formal structure is very simple:
*
* [HEADER]data[HEADER]data[HEADER]data[END]
*
* whereas [END] is exactly at the position given in bytes 11-28 of the
* header.
*
* Some data the VFS module is capturing is of use for any VFS operation.
* Therefore, there is a "common set" of data, that will be send with any
* data block. The following provides a list of this data.
* - the VFS function identifier (see VFS function ifentifier table below).
* - a timestamp to the millisecond.
* - the username (as text) who runs the VFS operation.
* - the SID of the user who run the VFS operation.
* - the domain under which the VFS operation has happened.
*
*/
/* VFS Functions identifier table. In protocol version 2, every vfs */
/* function is given a unique id. */
enum vfs_id {
/* care for the order here, required for compatibility */
/* with protocol version 1. */
vfs_id_read,
vfs_id_pread,
vfs_id_write,
vfs_id_pwrite,
/* end of protocol version 1 identifiers. */
vfs_id_mkdir,
vfs_id_rmdir,
vfs_id_rename,
vfs_id_chdir
};
/* Specific data sets for the VFS functions. */
struct mkdir_data {
const char *path;
mode_t mode;
int result;
};
struct rmdir_data {
const char *path;
int result;
};
struct rename_data {
const char *src;
const char *dst;
int result;
};
struct chdir_data {
const char *path;
int result;
};
/* rw_data used for read/write/pread/pwrite */
struct rw_data {
char *filename;
size_t len;
};
static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
{
connection_struct *conn = handle->conn;
const char *Mode;
Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
"internet_socket");
if (strstr(Mode,"unix_domain_socket")) {
return UNIX_DOMAIN_SOCKET;
} else {
return INTERNET_SOCKET;
}
}
/* Connect to an internet socket */
static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
const char *name, uint16_t port)
{
/* Create a streaming Socket */
int sockfd = -1;
struct addrinfo hints;
struct addrinfo *ailist = NULL;
struct addrinfo *res = NULL;
int ret;
ZERO_STRUCT(hints);
/* By default make sure it supports TCP. */
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_ADDRCONFIG;
ret = getaddrinfo(name,
NULL,
&hints,
&ailist);
if (ret) {
DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
"getaddrinfo failed for name %s [%s]\n",
name,
gai_strerror(ret) ));
return -1;
}
DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
"Port: %i\n", name, port));
for (res = ailist; res; res = res->ai_next) {
struct sockaddr_storage ss;
NTSTATUS status;
if (!res->ai_addr || res->ai_addrlen == 0) {
continue;
}
ZERO_STRUCT(ss);
memcpy(&ss, res->ai_addr, res->ai_addrlen);
status = open_socket_out(&ss, port, 10000, &sockfd);
if (NT_STATUS_IS_OK(status)) {
break;
}
}
if (ailist) {
freeaddrinfo(ailist);
}
if (sockfd == -1) {
DEBUG(1, ("smb_traffic_analyzer: unable to create "
"socket, error is %s",
strerror(errno)));
return -1;
}
return sockfd;
}
/* Connect to a unix domain socket */
static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
const char *name)
{
/* Create the socket to stad */
int len, sock;
struct sockaddr_un remote;
DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
"Unix domain socket mode. Using %s\n",
name ));
if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
"Couldn't create socket, "
"make sure stad is running!\n"));
return -1;
}
remote.sun_family = AF_UNIX;
strlcpy(remote.sun_path, name,
sizeof(remote.sun_path));
len=strlen(remote.sun_path) + sizeof(remote.sun_family);
if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
"Could not connect to "
"socket, make sure\nstad is running!\n"));
close(sock);
return -1;
}
return sock;
}
/* Private data allowing shared connection sockets. */
struct refcounted_sock {
struct refcounted_sock *next, *prev;
char *name;
uint16_t port;
int sock;
unsigned int ref_count;
};
/* The marshaller for the protocol version 2. */
static char *smb_traffic_analyzer_create_string( struct tm *tm, \
int seconds, vfs_handle_struct *handle, \
char *username, int vfs_operation, int count, ... )
{
va_list ap;
char *arg = NULL;
int len;
char *header = NULL;
char *buf = NULL;
char *timestr = NULL;
char *opstr = NULL;
char *userSID = NULL;
/* first create the data that is transfered with any VFS op */
opstr = talloc_asprintf(talloc_tos(), "%i", vfs_operation);
len = strlen(opstr);
buf = talloc_asprintf(talloc_tos(), "%04u%s", len, opstr);
len = strlen( username );
buf = talloc_asprintf_append(buf, "%04u%s", len, username);
userSID = dom_sid_string( talloc_tos(),
&handle->conn->server_info->ptok->user_sids[0]);
len = strlen( userSID );
buf = talloc_asprintf_append(buf, "%04u%s", len, userSID);
len = strlen( handle->conn->connectpath );
buf = talloc_asprintf_append( buf, "%04u%s", len, \
handle->conn->connectpath );
len = strlen( pdb_get_domain(handle->conn->server_info->sam_account) );
buf = talloc_asprintf_append( buf, "%04u%s", len, \
pdb_get_domain(handle->conn->server_info->sam_account) );
timestr = talloc_asprintf(talloc_tos(), \
"%04d-%02d-%02d %02d:%02d:%02d.%03d", \
tm->tm_year+1900, \
tm->tm_mon+1, \
tm->tm_mday, \
tm->tm_hour, \
tm->tm_min, \
tm->tm_sec, \
(int)seconds);
len = strlen( timestr );
buf = talloc_asprintf_append( buf, "%04u%s", len, timestr);
va_start( ap, count );
while ( count-- ) {
arg = va_arg( ap, char * );
/* protocol v2 sends a four byte string */
/* as a header to each block, including */
/* the numbers of bytes to come in the */
/* next string. */
len = strlen( arg );
buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
}
va_end( ap );
return buf;
}
static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
void *data,
enum vfs_id vfs_operation )
{
struct refcounted_sock *rf_sock = NULL;
struct timeval tv;
time_t tv_sec;
struct tm *tm = NULL;
int seconds;
char *str = NULL;
char *username = NULL;
char *header = NULL;
const char *anon_prefix = NULL;
const char *total_anonymization = NULL;
const char *protocol_version = NULL;
bool Write = false;
size_t len;
char state_flags[9] = "000000\0";
SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
if (rf_sock == NULL || rf_sock->sock == -1) {
DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
"closed\n"));
return;
}
GetTimeOfDay(&tv);
tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
tm = localtime(&tv_sec);
if (!tm) {
return;
}
seconds=(float) (tv.tv_usec / 1000);
/* check if anonymization is required */
total_anonymization=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",
"total_anonymization", NULL);
anon_prefix=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",\
"anonymize_prefix", NULL );
if (anon_prefix!=NULL) {
state_flags[1] = 'A';
if (total_anonymization!=NULL) {
username = talloc_asprintf(talloc_tos(),
"%s",
anon_prefix);
} else {
username = talloc_asprintf(talloc_tos(),
"%s%i",
anon_prefix,
str_checksum(
handle->conn->server_info->sanitized_username ) );
}
} else {
username = handle->conn->server_info->sanitized_username;
}
if (!username) {
return;
}
protocol_version = lp_parm_const_string(SNUM(handle->conn),
"smb_traffic_analyzer",
"protocol_version", NULL );
if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
struct rw_data *s_data = (struct rw_data *) data;
/* in case of protocol v1, ignore any vfs operations */
/* except read,pread,write,pwrite, and set the "Write" */
/* bool accordingly, send data and return. */
if ( vfs_operation > vfs_id_pwrite ) return;
if ( vfs_operation <= vfs_id_pread ) Write=false;
else Write=true;
str = talloc_asprintf(talloc_tos(),
"V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
"\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
(unsigned int) s_data->len,
username,
pdb_get_domain(handle->conn->server_info->sam_account),
Write ? 'W' : 'R',
handle->conn->connectpath,
s_data->filename,
tm->tm_year+1900,
tm->tm_mon+1,
tm->tm_mday,
tm->tm_hour,
tm->tm_min,
tm->tm_sec,
(int)seconds);
if (write_data(rf_sock->sock, str, len) != len) {
DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
"error sending V1 protocol data to socket!\n"));
return;
}
} else if ( strcmp( protocol_version, "V2") == 0) {
switch( vfs_operation ) {
case vfs_id_mkdir: ;
str = smb_traffic_analyzer_create_string( tm, \
seconds, handle, username, vfs_id_mkdir, 3,\
((struct mkdir_data *) data)->path, \
talloc_asprintf( talloc_tos(), "%u", \
((struct mkdir_data *) data)->mode), \
talloc_asprintf( talloc_tos(), "%u", \
((struct mkdir_data *) data)->result ));
break;
case vfs_id_rmdir: ;
str = smb_traffic_analyzer_create_string( tm, \
seconds, handle, username, vfs_id_rmdir, 2,\
((struct rmdir_data *) data)->path, \
talloc_asprintf( talloc_tos(), "%u", \
((struct rmdir_data *) data)->result ));
break;
case vfs_id_rename: ;
str = smb_traffic_analyzer_create_string( tm, \
seconds, handle, username, vfs_id_rename, 3,\
((struct rename_data *) data)->src, \
((struct rename_data *) data)->dst,
talloc_asprintf(talloc_tos(), "%u", \
((struct rename_data *) data)->result));
break;
case vfs_id_chdir: ;
str = smb_traffic_analyzer_create_string( tm, \
seconds, handle, username, vfs_id_chdir, 2,\
((struct chdir_data *) data)->path, \
talloc_asprintf(talloc_tos(), "%u", \
((struct chdir_data *) data)->result));
break;
case vfs_id_write:
case vfs_id_pwrite:
case vfs_id_read:
case vfs_id_pread: ;
str = smb_traffic_analyzer_create_string( tm, \
seconds, handle, username, vfs_operation, 2,\
((struct rw_data *) data)->filename, \
talloc_asprintf(talloc_tos(), "%u", \
((struct rw_data *) data)->len));
break;
default:
DEBUG(1, ("smb_traffic_analyzer: error! "
"wrong VFS operation id detected!\n"));
return;
}
} else {
DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
"error, unkown protocol given!\n"));
return;
}
if (!str) {
DEBUG(1, ("smb_traffic_analyzer_send_data: "
"unable to create string to send!\n"));
return;
}
/* If configured, optain the key and run AES encryption */
/* over the data. */
size_t size;
char *akey = secrets_fetch("smb_traffic_analyzer_key", &size);
if ( akey != NULL ) {
char *crypted;
state_flags[2] = 'E';
DEBUG(10, ("smb_traffic_analyzer: a key was found, encrypting "
"data!"));
AES_KEY *key;
samba_AES_set_encrypt_key(akey, 128, key);
samba_AES_encrypt( str, crypted, key );
len = strlen( crypted );
header = talloc_asprintf( talloc_tos(), "V2.%s%017u",
state_flags, len);
DEBUG(10, ("smb_traffic_analyzer_send_data_socket:"
" header created for crypted data: %s", header));
len = strlen(header);
if (write_data(rf_sock->sock, header, len) != len) {
DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
"error sending the header"
" over the socket!\n"));
}
len = strlen(crypted);
if (write_data(rf_sock->sock, crypted, len) != len) {
DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
"error sending crypted data to socket!\n"));
free( crypted );
return ;
}
}
len = strlen(str);
header = talloc_asprintf(talloc_tos(), "V2.%s%017u", state_flags, len);
DEBUG(10, ("smb_traffic_analyzer_send_data_socket: header created:"
"%s\n", header));
len = strlen(header);
if (write_data(rf_sock->sock, header, len) != len) {
DEBUG(1, ("smb_traffic_analyzer_send_data_socket: error "
"sending the header over the socket!\n"));
}
len = strlen(str);
DEBUG(10, ("smb_traffic_analyzer_send_data_socket: going to send "
"data block: %s\n",str));
if (write_data(rf_sock->sock, str, len) != len) {
DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
"error sending data to socket!\n"));
return ;
}
}
static struct refcounted_sock *sock_list;
static void smb_traffic_analyzer_free_data(void **pptr)
{
struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
if (rf_sock == NULL) {
return;
}
rf_sock->ref_count--;
if (rf_sock->ref_count != 0) {
return;
}
if (rf_sock->sock != -1) {
close(rf_sock->sock);
}
DLIST_REMOVE(sock_list, rf_sock);
TALLOC_FREE(rf_sock);
}
static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
const char *service,
const char *user)
{
connection_struct *conn = handle->conn;
enum sock_type st = smb_traffic_analyzer_connMode(handle);
struct refcounted_sock *rf_sock = NULL;
const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
lp_parm_const_string(SNUM(conn),
"smb_traffic_analyzer",
"host", "localhost");
uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
atoi( lp_parm_const_string(SNUM(conn),
"smb_traffic_analyzer", "port", "9430"));
int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
if (ret < 0) {
return ret;
}
/* Are we already connected ? */
for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
if (port == rf_sock->port &&
(strcmp(name, rf_sock->name) == 0)) {
break;
}
}
/* If we're connected already, just increase the
* reference count. */
if (rf_sock) {
rf_sock->ref_count++;
} else {
/* New connection. */
rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
if (rf_sock == NULL) {
SMB_VFS_NEXT_DISCONNECT(handle);
errno = ENOMEM;
return -1;
}
rf_sock->name = talloc_strdup(rf_sock, name);
if (rf_sock->name == NULL) {
SMB_VFS_NEXT_DISCONNECT(handle);
TALLOC_FREE(rf_sock);
errno = ENOMEM;
return -1;
}
rf_sock->port = port;
rf_sock->ref_count = 1;
if (st == UNIX_DOMAIN_SOCKET) {
rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
name);
} else {
rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
name,
port);
}
if (rf_sock->sock == -1) {
SMB_VFS_NEXT_DISCONNECT(handle);
TALLOC_FREE(rf_sock);
return -1;
}
DLIST_ADD(sock_list, rf_sock);
}
/* Store the private data. */
SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
struct refcounted_sock, return -1);
return 0;
}
/* VFS Functions */
static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
const char *path)
{
struct chdir_data s_data;
s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
s_data.path = path;
DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
return s_data.result;
}
static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
const struct smb_filename *smb_fname_src,
const struct smb_filename *smb_fname_dst)
{
struct rename_data s_data;
s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
smb_fname_dst);
s_data.src = smb_fname_src->base_name;
s_data.dst = smb_fname_dst->base_name;
DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
smb_fname_src->base_name,
smb_fname_dst->base_name));
smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
return s_data.result;
}
static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
const char *path)
{
struct rmdir_data s_data;
s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
s_data.path = path;
DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
return s_data.result;
}
static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
const char *path, mode_t mode)
{
struct mkdir_data s_data;
s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
s_data.path = path;
s_data.mode = mode;
DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
smb_traffic_analyzer_send_data(handle,
&s_data,
vfs_id_mkdir);
return s_data.result;
}
static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
files_struct *fsp, void *data, size_t n)
{
struct rw_data s_data;
s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
s_data.filename = fsp->fsp_name->base_name;
DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
smb_traffic_analyzer_send_data(handle,
&s_data,
vfs_id_read);
return s_data.len;
}
static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
{
struct rw_data s_data;
s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
s_data.filename = fsp->fsp_name->base_name;
DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
fsp_str_dbg(fsp)));
smb_traffic_analyzer_send_data(handle,
&s_data,
vfs_id_pread);
return s_data.len;
}
static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
files_struct *fsp, const void *data, size_t n)
{
struct rw_data s_data;
s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
s_data.filename = fsp->fsp_name->base_name;
DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
fsp_str_dbg(fsp)));
smb_traffic_analyzer_send_data(handle,
&s_data,
vfs_id_write);
return s_data.len;
}
static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
{
struct rw_data s_data;
s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
s_data.filename = fsp->fsp_name->base_name;
DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
fsp_str_dbg(fsp)));
smb_traffic_analyzer_send_data(handle,
&s_data,
vfs_id_pwrite);
return s_data.len;
}
static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
.connect_fn = smb_traffic_analyzer_connect,
.vfs_read = smb_traffic_analyzer_read,
.pread = smb_traffic_analyzer_pread,
.write = smb_traffic_analyzer_write,
.pwrite = smb_traffic_analyzer_pwrite,
.mkdir = smb_traffic_analyzer_mkdir,
.rename = smb_traffic_analyzer_rename,
.chdir = smb_traffic_analyzer_chdir
};
/* Module initialization */
NTSTATUS vfs_smb_traffic_analyzer_init(void)
{
NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
"smb_traffic_analyzer",
&vfs_smb_traffic_analyzer_fns);
if (!NT_STATUS_IS_OK(ret)) {
return ret;
}
vfs_smb_traffic_analyzer_debug_level =
debug_add_class("smb_traffic_analyzer");
if (vfs_smb_traffic_analyzer_debug_level == -1) {
vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
"debugging class!\n"));
} else {
DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
"'smb_traffic_analyzer': %d\n", \
vfs_smb_traffic_analyzer_debug_level));
}
return ret;
}