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https://github.com/freebsd/freebsd-src
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2ffd30f7ee
These weren't removed when $FreeBSD$ was removed. They aren't needed and now are a style(9) nonconformity. Sponsored by: Netflix
139 lines
3.9 KiB
C
139 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2003 Silicon Graphics International Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_backend.c#3 $
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*/
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/*
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* CTL backend driver registration routines
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*
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* Author: Ken Merry <ken@FreeBSD.org>
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/types.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/queue.h>
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#include <sys/sysctl.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_da.h>
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#include <cam/ctl/ctl_io.h>
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#include <cam/ctl/ctl.h>
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#include <cam/ctl/ctl_frontend.h>
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#include <cam/ctl/ctl_backend.h>
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#include <cam/ctl/ctl_ioctl.h>
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#include <cam/ctl/ctl_ha.h>
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#include <cam/ctl/ctl_private.h>
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#include <cam/ctl/ctl_debug.h>
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extern struct ctl_softc *control_softc;
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int
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ctl_backend_register(struct ctl_backend_driver *be)
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{
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struct ctl_softc *softc = control_softc;
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struct ctl_backend_driver *be_tmp;
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int error;
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/* Sanity check, make sure this isn't a duplicate registration. */
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mtx_lock(&softc->ctl_lock);
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STAILQ_FOREACH(be_tmp, &softc->be_list, links) {
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if (strcmp(be_tmp->name, be->name) == 0) {
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mtx_unlock(&softc->ctl_lock);
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return (-1);
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}
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}
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mtx_unlock(&softc->ctl_lock);
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#ifdef CS_BE_CONFIG_MOVE_DONE_IS_NOT_USED
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be->config_move_done = ctl_config_move_done;
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#endif
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/* Call the backend's initialization routine. */
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if (be->init != NULL) {
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if ((error = be->init()) != 0) {
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printf("%s backend init error: %d\n",
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be->name, error);
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return (error);
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}
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}
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mtx_lock(&softc->ctl_lock);
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STAILQ_INSERT_TAIL(&softc->be_list, be, links);
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softc->num_backends++;
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mtx_unlock(&softc->ctl_lock);
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return (0);
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}
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int
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ctl_backend_deregister(struct ctl_backend_driver *be)
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{
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struct ctl_softc *softc = control_softc;
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int error;
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/* Call the backend's shutdown routine. */
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if (be->shutdown != NULL) {
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if ((error = be->shutdown()) != 0) {
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printf("%s backend shutdown error: %d\n",
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be->name, error);
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return (error);
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}
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}
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mtx_lock(&softc->ctl_lock);
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STAILQ_REMOVE(&softc->be_list, be, ctl_backend_driver, links);
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softc->num_backends--;
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mtx_unlock(&softc->ctl_lock);
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return (0);
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}
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struct ctl_backend_driver *
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ctl_backend_find(char *backend_name)
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{
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struct ctl_softc *softc = control_softc;
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struct ctl_backend_driver *be_tmp;
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mtx_lock(&softc->ctl_lock);
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STAILQ_FOREACH(be_tmp, &softc->be_list, links) {
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if (strcmp(be_tmp->name, backend_name) == 0) {
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mtx_unlock(&softc->ctl_lock);
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return (be_tmp);
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}
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}
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mtx_unlock(&softc->ctl_lock);
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return (NULL);
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}
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