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/*
* 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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2013 Nexenta Systems, Inc. All rights reserved.
*/
/*
* LanMan share door server
*/
#include <door.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <syslog.h>
#include <string.h>
#include <strings.h>
#include <pthread.h>
#include <smbsrv/libsmb.h>
#include <smbsrv/smb_share.h>
#include <smbsrv/smbinfo.h>
#include "smbd.h"
#define SMB_SHARE_DSRV_VERSION 1
#define SMB_SHARE_DSRV_COOKIE ((void*)(0xdeadbeef^SMB_SHARE_DSRV_VERSION))
static int smb_share_dsrv_fd = -1;
static pthread_mutex_t smb_share_dsrv_mtx = PTHREAD_MUTEX_INITIALIZER;
static smbd_door_t smb_share_sdh;
static void smbd_share_dispatch(void *, char *, size_t, door_desc_t *, uint_t);
/*
* Start the LanMan share door service.
* Returns 0 on success. Otherwise, -1.
*/
int
smbd_share_start(void)
{
int newfd;
const char *door_name;
(void) pthread_mutex_lock(&smb_share_dsrv_mtx);
if (smb_share_dsrv_fd != -1) {
syslog(LOG_ERR, "smbd_share_start: duplicate");
(void) pthread_mutex_unlock(&smb_share_dsrv_mtx);
return (smb_share_dsrv_fd);
}
smbd_door_init(&smb_share_sdh, "share");
if ((smb_share_dsrv_fd = door_create(smbd_share_dispatch,
SMB_SHARE_DSRV_COOKIE, (DOOR_UNREF | DOOR_REFUSE_DESC))) < 0) {
syslog(LOG_ERR, "smbd_share_start: door_create: %s",
strerror(errno));
(void) pthread_mutex_unlock(&smb_share_dsrv_mtx);
return (-1);
}
door_name = getenv("SMB_SHARE_DNAME");
if (door_name == NULL)
door_name = SMB_SHARE_DNAME;
(void) unlink(door_name);
if ((newfd = creat(door_name, 0644)) < 0) {
syslog(LOG_ERR, "smbd_share_start: open: %s",
strerror(errno));
(void) door_revoke(smb_share_dsrv_fd);
smb_share_dsrv_fd = -1;
(void) pthread_mutex_unlock(&smb_share_dsrv_mtx);
return (-1);
}
(void) close(newfd);
(void) fdetach(door_name);
if (fattach(smb_share_dsrv_fd, door_name) < 0) {
syslog(LOG_ERR, "smbd_share_start: fattach: %s",
strerror(errno));
(void) door_revoke(smb_share_dsrv_fd);
smb_share_dsrv_fd = -1;
(void) pthread_mutex_unlock(&smb_share_dsrv_mtx);
return (-1);
}
(void) pthread_mutex_unlock(&smb_share_dsrv_mtx);
return (smb_share_dsrv_fd);
}
/*
* Stop the LanMan share door service.
*/
void
smbd_share_stop(void)
{
(void) pthread_mutex_lock(&smb_share_dsrv_mtx);
smbd_door_fini(&smb_share_sdh);
if (smb_share_dsrv_fd != -1) {
const char *door_name;
door_name = getenv("SMB_SHARE_DNAME");
if (door_name == NULL)
door_name = SMB_SHARE_DNAME;
(void) fdetach(door_name);
(void) door_revoke(smb_share_dsrv_fd);
smb_share_dsrv_fd = -1;
}
(void) pthread_mutex_unlock(&smb_share_dsrv_mtx);
}
/*
* This function with which the LMSHARE door is associated
* will invoke the appropriate CIFS share management function
* based on the request type of the door call.
*/
/*ARGSUSED*/
static void
smbd_share_dispatch(void *cookie, char *ptr, size_t size, door_desc_t *dp,
uint_t n_desc)
{
uint32_t rc;
int req_type;
char buf[SMB_SHARE_DSIZE];
unsigned int used;
smb_dr_ctx_t *dec_ctx;
smb_dr_ctx_t *enc_ctx;
unsigned int dec_status;
unsigned int enc_status;
char *sharename, *sharename2;
smb_share_t lmshr_info;
smb_shrlist_t lmshr_list;
int offset;
smbd_door_enter(&smb_share_sdh);
if ((cookie != SMB_SHARE_DSRV_COOKIE) || (ptr == NULL) ||
(size < sizeof (uint32_t))) {
smbd_door_return(&smb_share_sdh, NULL, 0, NULL, 0);
}
dec_ctx = smb_dr_decode_start(ptr, size);
enc_ctx = smb_dr_encode_start(buf, sizeof (buf));
req_type = smb_dr_get_uint32(dec_ctx);
switch (req_type) {
case SMB_SHROP_NUM_SHARES:
if ((dec_status = smb_dr_decode_finish(dec_ctx)) != 0)
goto decode_error;
rc = smb_shr_count();
smb_dr_put_int32(enc_ctx, SMB_SHARE_DSUCCESS);
smb_dr_put_uint32(enc_ctx, rc);
break;
case SMB_SHROP_DELETE:
sharename = smb_dr_get_string(dec_ctx);
if ((dec_status = smb_dr_decode_finish(dec_ctx)) != 0) {
smb_dr_free_string(sharename);
goto decode_error;
}
rc = smb_shr_remove(sharename);
smb_dr_put_int32(enc_ctx, SMB_SHARE_DSUCCESS);
smb_dr_put_uint32(enc_ctx, rc);
smb_dr_free_string(sharename);
break;
case SMB_SHROP_RENAME:
sharename = smb_dr_get_string(dec_ctx);
sharename2 = smb_dr_get_string(dec_ctx);
if ((dec_status = smb_dr_decode_finish(dec_ctx)) != 0) {
smb_dr_free_string(sharename);
smb_dr_free_string(sharename2);
goto decode_error;
}
rc = smb_shr_rename(sharename, sharename2);
smb_dr_put_int32(enc_ctx, SMB_SHARE_DSUCCESS);
smb_dr_put_uint32(enc_ctx, rc);
smb_dr_free_string(sharename);
smb_dr_free_string(sharename2);
break;
case SMB_SHROP_ADD:
smb_dr_get_share(dec_ctx, &lmshr_info);
if ((dec_status = smb_dr_decode_finish(dec_ctx)) != 0)
goto decode_error;
rc = smb_shr_add(&lmshr_info);
smb_dr_put_int32(enc_ctx, SMB_SHARE_DSUCCESS);
smb_dr_put_uint32(enc_ctx, rc);
smb_dr_put_share(enc_ctx, &lmshr_info);
break;
case SMB_SHROP_MODIFY:
smb_dr_get_share(dec_ctx, &lmshr_info);
if ((dec_status = smb_dr_decode_finish(dec_ctx)) != 0) {
goto decode_error;
}
rc = smb_shr_modify(&lmshr_info);
smb_dr_put_int32(enc_ctx, SMB_SHARE_DSUCCESS);
smb_dr_put_uint32(enc_ctx, rc);
break;
case SMB_SHROP_LIST:
offset = smb_dr_get_int32(dec_ctx);
if ((dec_status = smb_dr_decode_finish(dec_ctx)) != 0)
goto decode_error;
smb_shr_list(offset, &lmshr_list);
smb_dr_put_int32(enc_ctx, SMB_SHARE_DSUCCESS);
smb_dr_put_buf(enc_ctx, (unsigned char *)&lmshr_list,
sizeof (smb_shrlist_t));
break;
default:
dec_status = smb_dr_decode_finish(dec_ctx);
goto decode_error;
}
if ((enc_status = smb_dr_encode_finish(enc_ctx, &used)) != 0) {
enc_ctx = smb_dr_encode_start(buf, sizeof (buf));
smb_dr_put_int32(enc_ctx, SMB_SHARE_DERROR);
smb_dr_put_uint32(enc_ctx, enc_status);
(void) smb_dr_encode_finish(enc_ctx, &used);
}
smbd_door_return(&smb_share_sdh, buf, used, NULL, 0);
return;
decode_error:
smb_dr_put_int32(enc_ctx, SMB_SHARE_DERROR);
smb_dr_put_uint32(enc_ctx, dec_status);
(void) smb_dr_encode_finish(enc_ctx, &used);
smbd_door_return(&smb_share_sdh, buf, used, NULL, 0);
}
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