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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.
*/
#include <sys/list.h>
#include <assert.h>
#include <alloca.h>
#include <door.h>
#include <errno.h>
#include <syslog.h>
#include <unistd.h>
#include <stdio.h>
#include <synch.h>
#include <string.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pthread.h>
#include <strings.h>
#include <umem.h>
#include <smbsrv/smb_door.h>
#include <smbsrv/smb_xdr.h>
#include <smbsrv/smb_token.h>
#include <smbsrv/libmlsvc.h>
#include <smbsrv/libsmbns.h>
#include "smbd.h"
/*
* Special version of smb_door_dispatch() for the
* "fake" smbsrv (running in user space).
*
* This is called via function pointer from
* smbsrv: smb_kdoor_upcall()
*
* The args and response go RPC encoded, just so we can
* borrow some of the common doorsvc code, even though
* there's no need for RPC encoding in this scenario.
*/
int
fksmbd_door_dispatch(smb_doorarg_t *da)
{
smbd_arg_t dop_arg;
smb_doorhdr_t *hdr;
char *rbuf = NULL;
char *argp = da->da_arg.data_ptr;
size_t arg_size = da->da_arg.data_size;
size_t hdr_size, rsize;
/*
* Decode
*
* da->da_arg.data_ptr = (arg data, xdr encoded)
* da->da_arg.data_size = (arg data len)
*/
bzero(&dop_arg, sizeof (smbd_arg_t));
hdr = &dop_arg.hdr;
hdr_size = xdr_sizeof(smb_doorhdr_xdr, hdr);
if ((argp == NULL) || (arg_size < hdr_size)) {
syslog(LOG_DEBUG, "fksmbd_door_dispatch: bad args");
return (-1);
}
if (smb_doorhdr_decode(hdr, (uint8_t *)argp, hdr_size) == -1) {
syslog(LOG_DEBUG, "smbd_door_dispatch: header decode failed");
return (-1);
}
if ((hdr->dh_magic != SMB_DOOR_HDR_MAGIC) ||
(hdr->dh_flags != SMB_DF_FAKE_KERNEL)) {
syslog(LOG_DEBUG, "fksmbd_door_dispatch: invalid header");
return (-1);
}
dop_arg.opname = smb_doorhdr_opname(hdr->dh_op);
dop_arg.data = argp + hdr_size;
dop_arg.datalen = hdr->dh_datalen;
if (hdr->dh_op == SMB_DR_ASYNC_RESPONSE) {
/*
* ASYNC_RESPONSE is not used here.
*/
syslog(LOG_DEBUG, "fksmbd_door_dispatch: ASYNC?");
return (-1);
}
/*
* Dispatch
*
* Call the common smbd_doorsvc.c code.
*/
(void) smbd_door_dispatch_op(&dop_arg);
/*
* Encode
*
* da->da_arg.rbuf = (return data buf)
* da->da_arg.rsize = (return data size)
*
* Note that the return data buffer initially
* points to the same buffer as the args.
* If that's not large enough, umem_alloc.
*/
rsize = dop_arg.rsize + hdr_size;
rbuf = umem_alloc(rsize, UMEM_DEFAULT);
if (rbuf == NULL) {
syslog(LOG_DEBUG, "fksmbd_door_dispatch[%s]: alloc %m",
dop_arg.opname);
return (-1);
}
/* Copy caller's return data after the header. */
if (dop_arg.rbuf != NULL) {
(void) memcpy(rbuf + hdr_size, dop_arg.rbuf, dop_arg.rsize);
free(dop_arg.rbuf);
}
hdr->dh_datalen = dop_arg.rsize;
(void) smb_doorhdr_encode(hdr, (uint8_t *)rbuf, hdr_size);
/* Let's update da->da_hdr too. */
da->da_hdr = *hdr;
/*
* Was door_return()
* NB: The "fake kernel" smbsrv code will umem_free rbuf.
*/
da->da_arg.rbuf = rbuf;
da->da_arg.rsize = rsize;
return (0);
}
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