b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * CDDL HEADER START
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross *
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * The contents of this file are subject to the terms of the
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Common Development and Distribution License (the "License").
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * You may not use this file except in compliance with the License.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross *
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * or http://www.opensolaris.org/os/licensing.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * See the License for the specific language governing permissions
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * and limitations under the License.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross *
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * When distributing Covered Code, include this CDDL HEADER in each
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * If applicable, add the following below this CDDL HEADER, with the
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * fields enclosed by brackets "[]" replaced with your own identifying
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * information: Portions Copyright [yyyy] [name of copyright owner]
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross *
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * CDDL HEADER END
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * "Upcall" glue for the fake (user-mode) smbsrv module.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <sys/types.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <sys/kmem.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <sys/ddi.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <sys/sunddi.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <sys/cmn_err.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <sys/door.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <smbsrv/smb_kproto.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross#include <smbsrv/smb_door.h>
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic int smb_kdoor_encode(smb_doorarg_t *);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic int smb_kdoor_decode(smb_doorarg_t *);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic void smb_kdoor_sethdr(smb_doorarg_t *, uint32_t);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic boolean_t smb_kdoor_chkhdr(smb_doorarg_t *, smb_doorhdr_t *);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic void smb_kdoor_free(door_arg_t *);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossvoid
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_init(smb_server_t *sv)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross sv->sv_kdoor_id = -1;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross mutex_init(&sv->sv_kdoor_mutex, NULL, MUTEX_DEFAULT, NULL);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cv_init(&sv->sv_kdoor_cv, NULL, CV_DEFAULT, NULL);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossvoid
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_fini(smb_server_t *sv)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross smb_kdoor_close(sv);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cv_destroy(&sv->sv_kdoor_cv);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross mutex_destroy(&sv->sv_kdoor_mutex);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * In the "fake kernen", our "upcalls" don't use the
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * real door, but just call via a function pointer.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * This is where we setup that pointer, which is
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * fksmbd_door_dispatch()
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossvoid
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossfksmb_kdoor_open(smb_server_t *sv, void *varg)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross sv->sv_kdoor_hd = varg;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossvoid
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_close(smb_server_t *sv)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross sv->sv_kdoor_hd = NULL;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross sv->sv_kdoor_id = -1;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/* ARGSUSED */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossint
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_upcall(smb_server_t *sv, uint32_t cmd,
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross void *req_data, xdrproc_t req_xdr,
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross void *rsp_data, xdrproc_t rsp_xdr)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross smb_doorarg_t da;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross fksmb_kdoor_disp_func_t *func;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross int rc;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross bzero(&da, sizeof (smb_doorarg_t));
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da.da_opcode = cmd;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da.da_opname = smb_doorhdr_opname(cmd);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da.da_req_xdr = req_xdr;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da.da_rsp_xdr = rsp_xdr;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da.da_req_data = req_data;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da.da_rsp_data = rsp_data;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if ((req_data == NULL && req_xdr != NULL) ||
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross (rsp_data == NULL && rsp_xdr != NULL)) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cmn_err(CE_WARN, "smb_kdoor_upcall[%s]: invalid param",
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da.da_opname);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (-1);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross /* NB: no ASYNC, nor event stuff */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross func = (fksmb_kdoor_disp_func_t *)(sv->sv_kdoor_hd);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (func == NULL)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (EFAULT);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if ((rc = smb_kdoor_encode(&da)) != 0)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross goto out;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross /*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * The "upcall" (just call via function pointer)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * i.e. see: fksmbd_door_dispatch()
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if ((rc = (*func)(&da)) != 0)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross goto out;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross rc = smb_kdoor_decode(&da);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossout:
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross smb_kdoor_free(&da.da_arg);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (rc);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/* no smb_kdoor_send, smb_kdoor_receive */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/* no smb_kdoor_upcall_private */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic int
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_encode(smb_doorarg_t *da)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross XDR xdrs;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross char *buf;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross uint32_t len;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross len = xdr_sizeof(smb_doorhdr_xdr, &da->da_hdr);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (da->da_req_xdr != NULL)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross len += xdr_sizeof(da->da_req_xdr, da->da_req_data);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross smb_kdoor_sethdr(da, len);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross buf = kmem_zalloc(len, KM_SLEEP);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdrmem_create(&xdrs, buf, len, XDR_ENCODE);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (!smb_doorhdr_xdr(&xdrs, &da->da_hdr)) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cmn_err(CE_WARN, "smb_kdoor_encode[%s]: header encode failed",
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_opname);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross kmem_free(buf, len);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdr_destroy(&xdrs);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (-1);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (da->da_req_xdr != NULL) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (!da->da_req_xdr(&xdrs, da->da_req_data)) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cmn_err(CE_WARN, "smb_kdoor_encode[%s]: encode failed",
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_opname);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross kmem_free(buf, len);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdr_destroy(&xdrs);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (-1);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_arg.data_ptr = buf;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_arg.data_size = len;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_arg.desc_ptr = NULL;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_arg.desc_num = 0;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_arg.rbuf = buf;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_arg.rsize = len;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdr_destroy(&xdrs);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (0);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Decode the response in rbuf and rsize.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic int
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_decode(smb_doorarg_t *da)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross XDR xdrs;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross smb_doorhdr_t hdr;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross char *rbuf = da->da_arg.rbuf;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross uint32_t rsize = da->da_arg.rsize;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (rbuf == NULL || rsize == 0) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cmn_err(CE_WARN, "smb_kdoor_decode[%s]: invalid param",
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_opname);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (-1);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdrmem_create(&xdrs, rbuf, rsize, XDR_DECODE);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (!smb_doorhdr_xdr(&xdrs, &hdr)) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cmn_err(CE_WARN, "smb_kdoor_decode[%s]: header decode failed",
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_opname);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdr_destroy(&xdrs);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (-1);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (!smb_kdoor_chkhdr(da, &hdr)) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdr_destroy(&xdrs);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (-1);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (hdr.dh_datalen != 0 && da->da_rsp_xdr != NULL) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (!da->da_rsp_xdr(&xdrs, da->da_rsp_data)) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cmn_err(CE_WARN, "smb_kdoor_decode[%s]: decode failed",
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_opname);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdr_destroy(&xdrs);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (-1);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross xdr_destroy(&xdrs);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (0);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic void
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_sethdr(smb_doorarg_t *da, uint32_t datalen)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross smb_doorhdr_t *hdr = &da->da_hdr;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross bzero(hdr, sizeof (smb_doorhdr_t));
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross hdr->dh_magic = SMB_DOOR_HDR_MAGIC;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross hdr->dh_flags = da->da_flags | SMB_DF_FAKE_KERNEL;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross hdr->dh_op = da->da_opcode;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross /* hdr->dh_txid = 0 (not used) */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross hdr->dh_datalen = datalen;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross hdr->dh_door_rc = SMB_DOP_NOT_CALLED;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic boolean_t
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_chkhdr(smb_doorarg_t *da, smb_doorhdr_t *hdr)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if ((hdr->dh_magic != SMB_DOOR_HDR_MAGIC) ||
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross (hdr->dh_op != da->da_hdr.dh_op) ||
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross (hdr->dh_txid != da->da_hdr.dh_txid)) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cmn_err(CE_WARN, "smb_kdoor_chkhdr[%s]: invalid header",
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_opname);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (B_FALSE);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross switch (hdr->dh_door_rc) {
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross case SMB_DOP_SUCCESS:
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross break;
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross /* SMB_DOP_EMPTYBUF is a "normal" error (silent). */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross case SMB_DOP_EMPTYBUF:
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (B_FALSE);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross default:
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross cmn_err(CE_WARN, "smb_kdoor_chkhdr[%s]: call failed: %u",
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross da->da_opname, hdr->dh_door_rc);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (B_FALSE);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross }
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross return (B_TRUE);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross/*
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * Free both the argument and result door buffers regardless of the status
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * of the up-call. The doorfs allocates a new buffer if the result buffer
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross * passed by the client is too small.
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross */
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rossstatic void
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Rosssmb_kdoor_free(door_arg_t *arg)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross{
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (arg->rbuf != NULL && arg->rbuf != arg->data_ptr)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross kmem_free(arg->rbuf, arg->rsize);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross if (arg->data_ptr != NULL)
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross kmem_free(arg->data_ptr, arg->data_size);
b819cea2f73f98c5662230cc9affc8cc84f77fcfGordon Ross}