| 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 kernel_generic_ipc
|
|---|
| 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_phone_handle_t phandle = CAP_NIL;
|
|---|
| 45 | kobject_t *pobj = NULL;
|
|---|
| 46 | errno_t rc = phone_alloc(TASK, false, &phandle, &pobj);
|
|---|
| 47 | if (rc == EOK) {
|
|---|
| 48 | /*
|
|---|
| 49 | * Set the sender-assigned label to the new phone.
|
|---|
| 50 | */
|
|---|
| 51 | pobj->phone->label = ipc_get_arg5(&call->data);
|
|---|
| 52 | }
|
|---|
| 53 | call->priv = (sysarg_t) pobj;
|
|---|
| 54 | ipc_set_arg5(&call->data, cap_handle_raw(phandle));
|
|---|
| 55 | return 0;
|
|---|
| 56 | }
|
|---|
| 57 |
|
|---|
| 58 | static errno_t answer_cleanup(call_t *answer, ipc_data_t *olddata)
|
|---|
| 59 | {
|
|---|
| 60 | cap_phone_handle_t phandle = (cap_handle_t) ipc_get_arg5(olddata);
|
|---|
| 61 | kobject_t *pobj = (kobject_t *) answer->priv;
|
|---|
| 62 |
|
|---|
| 63 | if (cap_handle_valid(phandle)) {
|
|---|
| 64 | kobject_put(pobj);
|
|---|
| 65 | cap_free(TASK, phandle);
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | return EOK;
|
|---|
| 69 | }
|
|---|
| 70 |
|
|---|
| 71 | static errno_t answer_preprocess(call_t *answer, ipc_data_t *olddata)
|
|---|
| 72 | {
|
|---|
| 73 | cap_phone_handle_t phandle = (cap_handle_t) ipc_get_arg5(olddata);
|
|---|
| 74 | kobject_t *pobj = (kobject_t *) answer->priv;
|
|---|
| 75 |
|
|---|
| 76 | if (ipc_get_retval(&answer->data) != EOK) {
|
|---|
| 77 | /* The connection was not accepted */
|
|---|
| 78 | answer_cleanup(answer, olddata);
|
|---|
| 79 | } else if (cap_handle_valid(phandle)) {
|
|---|
| 80 | /*
|
|---|
| 81 | * The connection was accepted
|
|---|
| 82 | */
|
|---|
| 83 |
|
|---|
| 84 | /*
|
|---|
| 85 | * We need to create another reference as the one we have now
|
|---|
| 86 | * will be consumed by ipc_phone_connect().
|
|---|
| 87 | */
|
|---|
| 88 | kobject_add_ref(pobj);
|
|---|
| 89 |
|
|---|
| 90 | if (ipc_phone_connect(pobj->phone,
|
|---|
| 91 | &answer->sender->answerbox)) {
|
|---|
| 92 | /* Pass the reference to the capability */
|
|---|
| 93 | cap_publish(TASK, phandle, pobj);
|
|---|
| 94 | } else {
|
|---|
| 95 | /* The answerbox is shutting down. */
|
|---|
| 96 | ipc_set_retval(&answer->data, ENOENT);
|
|---|
| 97 | answer_cleanup(answer, olddata);
|
|---|
| 98 | }
|
|---|
| 99 | } else {
|
|---|
| 100 | ipc_set_retval(&answer->data, ELIMIT);
|
|---|
| 101 | }
|
|---|
| 102 |
|
|---|
| 103 | return EOK;
|
|---|
| 104 | }
|
|---|
| 105 |
|
|---|
| 106 | sysipc_ops_t ipc_m_connect_to_me_ops = {
|
|---|
| 107 | .request_preprocess = null_request_preprocess,
|
|---|
| 108 | .request_forget = null_request_forget,
|
|---|
| 109 | .request_process = request_process,
|
|---|
| 110 | .answer_cleanup = answer_cleanup,
|
|---|
| 111 | .answer_preprocess = answer_preprocess,
|
|---|
| 112 | .answer_process = null_answer_process,
|
|---|
| 113 | };
|
|---|
| 114 |
|
|---|
| 115 | /** @}
|
|---|
| 116 | */
|
|---|
