kernel/generic/src/ipc/ops/concttome.c

   1 /*
   2  * Copyright (c) 2006 Ondrej Palkovsky
   3  * Copyright (c) 2012 Jakub Jermar
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * - Redistributions of source code must retain the above copyright
  11  *   notice, this list of conditions and the following disclaimer.
  12  * - Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in the
  14  *   documentation and/or other materials provided with the distribution.
  15  * - The name of the author may not be used to endorse or promote products
  16  *   derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 /** @addtogroup genericipc
  31  * @{
  32  */
  33 /** @file
  34  */
  35
  36 #include <ipc/sysipc_ops.h>
  37 #include <ipc/ipc.h>
  38 #include <ipc/ipcrsc.h>
  39 #include <abi/errno.h>
  40 #include <arch.h>
  41
  42 static int request_process(call_t *call, answerbox_t *box)
  43 {
  44         cap_handle_t phone_handle = phone_alloc(TASK);
  45
  46         IPC_SET_ARG5(call->data, phone_handle);
  47
  48         return EOK;
  49 }
  50
  51 static int answer_cleanup(call_t *answer, ipc_data_t *olddata)
  52 {
  53         cap_handle_t phone_handle = (cap_handle_t) IPC_GET_ARG5(*olddata);
  54
  55         if (phone_handle >= 0)
  56                 phone_dealloc(phone_handle);
  57
  58         return EOK;
  59 }
  60
  61 static int answer_preprocess(call_t *answer, ipc_data_t *olddata)
  62 {
  63         cap_handle_t phone_handle = (cap_handle_t) IPC_GET_ARG5(*olddata);
  64
  65         if (IPC_GET_RETVAL(answer->data) != EOK) {
  66                 /* The connection was not accepted */
  67                 answer_cleanup(answer, olddata);
  68         } else if (phone_handle >= 0) {
  69                 /* The connection was accepted */
  70                 if (phone_connect(phone_handle, &answer->sender->answerbox)) {
  71                         /* Set 'phone hash' as ARG5 of response */
  72                         kobject_t *phone_obj = kobject_get(TASK, phone_handle,
  73                             KOBJECT_TYPE_PHONE);
  74                         IPC_SET_ARG5(answer->data,
  75                             (sysarg_t) phone_obj->phone);
  76                         kobject_put(phone_obj);
  77                 } else {
  78                         /* The answerbox is shutting down. */
  79                         IPC_SET_RETVAL(answer->data, ENOENT);
  80                         answer_cleanup(answer, olddata);
  81                 }
  82         } else {
  83                 IPC_SET_RETVAL(answer->data, ELIMIT);
  84         }
  85
  86         return EOK;
  87 }
  88
  89
  90 sysipc_ops_t ipc_m_connect_to_me_ops = {
  91         .request_preprocess = null_request_preprocess,
  92         .request_forget = null_request_forget,
  93         .request_process = request_process,
  94         .answer_cleanup = answer_cleanup,
  95         .answer_preprocess = answer_preprocess,
  96         .answer_process = null_answer_process,
  97 };
  98
  99 /** @}
 100  */