/*
* Copyright (c) 2006 Ondrej Palkovsky
* Copyright (c) 2012 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup kernel_generic_ipc
* @{
*/
/** @file
*/
#include <ipc/sysipc_ops.h>
#include <ipc/ipc.h>
#include <ipc/ipcrsc.h>
#include <abi/errno.h>
#include <arch.h>
static errno_t request_preprocess(call_t *call, phone_t *phone)
{
/*
* Create the new phone and capability, but don't publish them yet.
* That will be done once the phone is connected.
*/
cap_phone_handle_t phandle;
kobject_t *pobj;
errno_t rc = phone_alloc(TASK, false, &phandle, &pobj);
if (rc != EOK) {
call->priv = 0;
return rc;
}
/* Move pobj's reference to call->priv */
call->priv = (sysarg_t) pobj;
pobj = NULL;
/* Remember the handle */
ipc_set_arg5(&call->data, (sysarg_t) phandle);
return EOK;
}
static errno_t request_forget(call_t *call)
{
cap_phone_handle_t phandle = (cap_handle_t) ipc_get_arg5(&call->data);
if (cap_handle_raw(phandle) < 0)
return EOK;
/* Move reference from call->priv to pobj */
kobject_t *pobj = (kobject_t *) call->priv;
call->priv = 0;
/* Drop pobj's reference */
kobject_put(pobj);
cap_free(TASK, phandle);
return EOK;
}
static errno_t answer_preprocess(call_t *answer, ipc_data_t *olddata)
{
/* Get an extra reference for phone */
kobject_t *pobj = (kobject_t *) answer->priv;
kobject_add_ref(pobj);
/* Set the recipient-assigned label */
pobj->phone->label = ipc_get_arg5(&answer->data);
/* Restore phone handle in answer's ARG5 */
ipc_set_arg5(&answer->data, ipc_get_arg5(olddata));
/* If the user accepted the call, connect */
if (ipc_get_retval(&answer->data) == EOK) {
/* Hand over reference from pobj to the answerbox */
(void) ipc_phone_connect(pobj->phone, &TASK->answerbox);
} else {
/* Drop the extra reference */
kobject_put(pobj);
}
return EOK;
}
static errno_t answer_process(call_t *answer)
{
cap_phone_handle_t phandle = (cap_handle_t) ipc_get_arg5(&answer->data);
/* Move the reference from answer->priv to pobj */
kobject_t *pobj = (kobject_t *) answer->priv;
answer->priv = 0;
if (ipc_get_retval(&answer->data)) {
if (cap_handle_raw(phandle) >= 0) {
/*
* Cleanup the unpublished capability and drop
* phone->kobject's reference.
*/
kobject_put(pobj);
cap_free(TASK, phandle);
}
} else {
/*
* Publish the capability. Publishing the capability this late
* is important for ipc_cleanup() where we want to have a
* capability for each phone that wasn't hung up by the user.
*/
cap_publish(TASK, phandle, pobj);
}
return EOK;
}
sysipc_ops_t ipc_m_connect_me_to_ops = {
.request_preprocess = request_preprocess,
.request_forget = request_forget,
.request_process = null_request_process,
.answer_cleanup = null_answer_cleanup,
.answer_preprocess = answer_preprocess,
.answer_process = answer_process,
};
/** @}
*/