| 1 | /*
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| 2 | * Copyright (c) 2006 Ondrej Palkovsky
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| 3 | * Copyright (c) 2012 Jakub Jermar
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * - Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * - The name of the author may not be used to endorse or promote products
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| 16 | * derived from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | /** @addtogroup kernel_generic_ipc
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| 31 | * @{
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| 32 | */
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| 33 | /** @file
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| 34 | */
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| 35 |
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| 36 | #include <ipc/sysipc_ops.h>
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| 37 | #include <ipc/ipc.h>
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| 38 | #include <ipc/ipcrsc.h>
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| 39 | #include <abi/errno.h>
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| 40 | #include <arch.h>
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| 41 |
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| 42 | static int request_process(call_t *call, answerbox_t *box)
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| 43 | {
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| 44 | cap_phone_handle_t phandle = CAP_NIL;
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| 45 | kobject_t *pobj = NULL;
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| 46 | errno_t rc = phone_alloc(TASK, false, &phandle, &pobj);
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| 47 | if (rc == EOK) {
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| 48 | /*
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| 49 | * Set the sender-assigned label to the new phone.
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| 50 | */
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| 51 | phone_from_kobject(pobj)->label = ipc_get_arg5(&call->data);
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| 52 | }
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| 53 | call->priv = (sysarg_t) pobj;
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| 54 | ipc_set_arg5(&call->data, cap_handle_raw(phandle));
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| 55 | return 0;
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| 56 | }
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| 57 |
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| 58 | static errno_t answer_cleanup(call_t *answer, ipc_data_t *olddata)
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| 59 | {
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| 60 | cap_phone_handle_t phandle = (cap_handle_t) ipc_get_arg5(olddata);
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| 61 | kobject_t *pobj = (kobject_t *) answer->priv;
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| 62 |
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| 63 | if (cap_handle_valid(phandle)) {
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| 64 | kobject_put(pobj);
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| 65 | cap_free(TASK, phandle);
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| 66 | }
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| 67 |
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| 68 | return EOK;
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| 69 | }
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| 70 |
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| 71 | static errno_t answer_preprocess(call_t *answer, ipc_data_t *olddata)
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| 72 | {
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| 73 | cap_phone_handle_t phandle = (cap_handle_t) ipc_get_arg5(olddata);
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| 74 | kobject_t *pobj = (kobject_t *) answer->priv;
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| 75 |
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| 76 | if (ipc_get_retval(&answer->data) != EOK) {
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| 77 | /* The connection was not accepted */
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| 78 | answer_cleanup(answer, olddata);
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| 79 | } else if (cap_handle_valid(phandle)) {
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| 80 | /*
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| 81 | * The connection was accepted
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| 82 | */
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| 83 |
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| 84 | /*
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| 85 | * We need to create another reference as the one we have now
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| 86 | * will be consumed by ipc_phone_connect().
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| 87 | */
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| 88 | kobject_add_ref(pobj);
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| 89 |
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| 90 | if (ipc_phone_connect(phone_from_kobject(pobj),
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| 91 | &answer->sender->answerbox)) {
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| 92 | /* Pass the reference to the capability */
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| 93 | cap_publish(TASK, phandle, pobj);
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| 94 | } else {
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| 95 | /* The answerbox is shutting down. */
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| 96 | ipc_set_retval(&answer->data, ENOENT);
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| 97 | answer_cleanup(answer, olddata);
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| 98 | }
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| 99 | } else {
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| 100 | ipc_set_retval(&answer->data, ELIMIT);
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| 101 | }
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| 102 |
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| 103 | return EOK;
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| 104 | }
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| 105 |
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| 106 | sysipc_ops_t ipc_m_connect_to_me_ops = {
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| 107 | .request_preprocess = null_request_preprocess,
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| 108 | .request_forget = null_request_forget,
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| 109 | .request_process = request_process,
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| 110 | .answer_cleanup = answer_cleanup,
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| 111 | .answer_preprocess = answer_preprocess,
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| 112 | .answer_process = null_answer_process,
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| 113 | };
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| 114 |
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| 115 | /** @}
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| 116 | */
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