smbd_opipe_doorsvc.c revision 3db3f65c6274eb042354801a308c8e9bc4994553
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <strings.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <door.h>
#include <errno.h>
#include <syslog.h>
#include <pthread.h>
#include <smbsrv/libsmb.h>
#include <smbsrv/mlrpc.h>
#include <smbsrv/libmlrpc.h>
#include <smbsrv/mlsvc.h>
#include <smbsrv/mlsvc_util.h>
static int smbd_opipe_fd = -1;
static int smbd_opipe_cookie = 0x50495045; /* PIPE */
static pthread_mutex_t smbd_opipe_mutex = PTHREAD_MUTEX_INITIALIZER;
static void smbd_opipe_dispatch(void *, char *, size_t, door_desc_t *, uint_t);
/*
* Create the smbd opipe door service.
* Returns the door descriptor on success. Otherwise returns -1.
*/
int
smbd_opipe_dsrv_start(void)
{
(void) pthread_mutex_lock(&smbd_opipe_mutex);
if (smbd_opipe_fd != -1) {
(void) pthread_mutex_unlock(&smbd_opipe_mutex);
errno = EEXIST;
return (-1);
}
errno = 0;
if ((smbd_opipe_fd = door_create(smbd_opipe_dispatch,
&smbd_opipe_cookie, (DOOR_UNREF | DOOR_REFUSE_DESC))) < 0) {
smbd_opipe_fd = -1;
}
(void) pthread_mutex_unlock(&smbd_opipe_mutex);
return (smbd_opipe_fd);
}
/*
* Stop the smbd opipe door service.
*/
void
smbd_opipe_dsrv_stop(void)
{
(void) pthread_mutex_lock(&smbd_opipe_mutex);
if (smbd_opipe_fd != -1) {
(void) door_revoke(smbd_opipe_fd);
smbd_opipe_fd = -1;
}
(void) pthread_mutex_unlock(&smbd_opipe_mutex);
}
/*
* Process smbd opipe requests.
*/
/*ARGSUSED*/
static void
smbd_opipe_dispatch(void *cookie, char *argp, size_t arg_size,
door_desc_t *dd, uint_t n_desc)
{
char buf[SMB_OPIPE_DOOR_BUFSIZE];
smb_opipe_hdr_t hdr;
size_t hdr_size;
uint8_t *data;
uint32_t datalen;
bzero(&hdr, sizeof (smb_opipe_hdr_t));
hdr_size = xdr_sizeof(smb_opipe_hdr_xdr, &hdr);
if ((cookie != &smbd_opipe_cookie) || (argp == NULL) ||
(arg_size < hdr_size)) {
(void) door_return(NULL, 0, NULL, 0);
}
if (smb_opipe_hdr_decode(&hdr, (uint8_t *)argp, hdr_size) == -1)
(void) door_return(NULL, 0, NULL, 0);
if ((hdr.oh_magic != SMB_OPIPE_HDR_MAGIC) || (hdr.oh_fid == 0))
(void) door_return(NULL, 0, NULL, 0);
if (hdr.oh_datalen > SMB_OPIPE_DOOR_BUFSIZE)
hdr.oh_datalen = SMB_OPIPE_DOOR_BUFSIZE;
data = (uint8_t *)argp + hdr_size;
datalen = hdr.oh_datalen;
switch (hdr.oh_op) {
case SMB_OPIPE_OPEN:
hdr.oh_status = ndr_s_open(hdr.oh_fid, data, datalen);
hdr.oh_datalen = 0;
hdr.oh_resid = 0;
datalen = hdr_size;
break;
case SMB_OPIPE_CLOSE:
hdr.oh_status = ndr_s_close(hdr.oh_fid);
hdr.oh_datalen = 0;
hdr.oh_resid = 0;
datalen = hdr_size;
break;
case SMB_OPIPE_READ:
data = (uint8_t *)buf + hdr_size;
datalen = hdr.oh_datalen;
hdr.oh_status = ndr_s_read(hdr.oh_fid, data, &datalen,
&hdr.oh_resid);
hdr.oh_datalen = datalen;
datalen += hdr_size;
break;
case SMB_OPIPE_WRITE:
hdr.oh_status = ndr_s_write(hdr.oh_fid, data, datalen);
hdr.oh_datalen = 0;
hdr.oh_resid = 0;
datalen = hdr_size;
break;
default:
(void) door_return(NULL, 0, NULL, 0);
break;
}
(void) smb_opipe_hdr_encode(&hdr, (uint8_t *)buf, hdr_size);
(void) door_return(buf, datalen, NULL, 0);
}