WebSVN – HelenOS-historic – Diff – /kernel/trunk/generic/src/ipc/sysipc.c


/*
 * Copyright (C) 2006 Ondrej Palkovsky
 * 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.
 */
 
#include <arch.h>
#include <proc/task.h>
 
#include <errno.h>
#include <mm/page.h>
#include <memstr.h>
#include <debug.h>
#include <ipc/ipc.h>
#include <ipc/sysipc.h>
#include <ipc/irq.h>
#include <ipc/ipcrsc.h>
#include <arch/interrupt.h>
 
#include <print.h>
#include <arch.h>
#include <proc/thread.h>
 
#define GET_CHECK_PHONE(phone,phoneid,err) { \
      if (phoneid > IPC_MAX_PHONES) { err; } \
      phone = &TASK->phones[phoneid]; \
}
 
#define STRUCT_TO_USPACE(dst,src) copy_to_uspace(dst,src,sizeof(*(src)))
 
/** Return true if the method is a system method */
static inline int is_system_method(__native method)
{
    if (method <= IPC_M_LAST_SYSTEM)
        return 1;
    return 0;
}
 
/** Return true if the message with this method is forwardable
 *
 * - some system messages may be forwarded, for some of them
 *   it is useless
 */
static inline int is_forwardable(__native method)
{
    if (method == IPC_M_PHONE_HUNGUP)
        return 0; /* This message is meant only for the receiver */
    return 1;
}
 
/****************************************************/
/* Functions that preprocess answer before sending
 * it to the recepient
 */
 
/** Return true if the caller (ipc_answer) should save
 * the old call contents for answer_preprocess
 */
static inline int answer_need_old(call_t *call)
{
    if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME)
        return 1;
    if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO)
        return 1;
    return 0;
}
 
/** Interpret process answer as control information */
static inline void answer_preprocess(call_t *answer, ipc_data_t *olddata)
{
    int phoneid;
 
    if (IPC_GET_RETVAL(answer->data) == EHANGUP) {
        /* In case of forward, hangup the forwared phone,
         * not the originator
         */
        spinlock_lock(&answer->data.phone->lock);
        spinlock_lock(&TASK->answerbox.lock);
        if (answer->data.phone->callee) {
            list_remove(&answer->data.phone->list);
            answer->data.phone->callee = 0;
        }
        spinlock_unlock(&TASK->answerbox.lock);
        spinlock_unlock(&answer->data.phone->lock);
    }
 
    if (!olddata)
        return;
 
    if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) {
        phoneid = IPC_GET_ARG3(*olddata);
        if (IPC_GET_RETVAL(answer->data)) {
            /* The connection was not accepted */
            phone_dealloc(phoneid);
        } else {
            /* The connection was accepted */
            phone_connect(phoneid,&answer->sender->answerbox);
            /* Set 'phone identification' as arg3 of response */
            IPC_SET_ARG3(answer->data, (__native)&TASK->phones[phoneid]);
        }
    } else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) {
        /* If the users accepted call, connect */
        if (!IPC_GET_RETVAL(answer->data)) {
            ipc_phone_connect((phone_t *)IPC_GET_ARG3(*olddata),
                      &TASK->answerbox);
        }
    }
}
 
/** Called before the request is sent
 *
 * @return 0 - no error, -1 - report error to user
 */
static int request_preprocess(call_t *call)
{
    int newphid;
 
    switch (IPC_GET_METHOD(call->data)) {
    case IPC_M_CONNECT_ME_TO:
        newphid = phone_alloc();
        if (newphid < 0)
            return ELIMIT;
        /* Set arg3 for server */
        IPC_SET_ARG3(call->data, (__native)&TASK->phones[newphid]);
        call->flags |= IPC_CALL_CONN_ME_TO;
        call->private = newphid;
        break;
    default:
        break;
    }
    return 0;
}
 
/****************************************************/
/* Functions called to process received call/answer
 * before passing to uspace
 */
 
/** Do basic kernel processing of received call answer */
static void process_answer(call_t *call)
{
    if (IPC_GET_RETVAL(call->data) == EHANGUP && \
        call->flags & IPC_CALL_FORWARDED)
        IPC_SET_RETVAL(call->data, EFORWARD);
 
    if (call->flags & IPC_CALL_CONN_ME_TO) {
        if (IPC_GET_RETVAL(call->data))
            phone_dealloc(call->private);
        else
            IPC_SET_ARG3(call->data, call->private);
    }
}
 
/** Do basic kernel processing of received call request
 *
 * @return 0 - the call should be passed to userspace, 1 - ignore call
 */
static int process_request(answerbox_t *box,call_t *call)
{
    int phoneid;
 
    if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) {
        phoneid = phone_alloc();
        if (phoneid < 0) { /* Failed to allocate phone */
            IPC_SET_RETVAL(call->data, ELIMIT);
            ipc_answer(box,call);
            return -1;
        }
        IPC_SET_ARG3(call->data, phoneid);
    }
    return 0;
}
 
/** Send a call over IPC, wait for reply, return to user
 *
 * @return Call identification, returns -1 on fatal error,
           -2 on 'Too many async request, handle answers first
 */
__native sys_ipc_call_sync_fast(__native phoneid, __native method,
                __native arg1, ipc_data_t *data)
{
    call_t call;
    phone_t *phone;
    int res;
 
    GET_CHECK_PHONE(phone, phoneid, return ENOENT);
 
    ipc_call_static_init(&call);
    IPC_SET_METHOD(call.data, method);
    IPC_SET_ARG1(call.data, arg1);
 
    if (!(res=request_preprocess(&call))) {
        ipc_call_sync(phone, &call);
        process_answer(&call);
    } else
        IPC_SET_RETVAL(call.data, res);
    STRUCT_TO_USPACE(&data->args, &call.data.args);
 
    return 0;
}
 
/** Synchronous IPC call allowing to send whole message */
__native sys_ipc_call_sync(__native phoneid, ipc_data_t *question,
               ipc_data_t *reply)
{
    call_t call;
    phone_t *phone;
    int res;
 
    ipc_call_static_init(&call);
    copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args));
 
    GET_CHECK_PHONE(phone, phoneid, return ENOENT);
 
    if (!(res=request_preprocess(&call))) {
        ipc_call_sync(phone, &call);
        process_answer(&call);
    } else
        IPC_SET_RETVAL(call.data, res);
 
    STRUCT_TO_USPACE(&reply->args, &call.data.args);
 
    return 0;
}
 
/** Check that the task did not exceed allowed limit
 *
 * @return 0 - Limit OK,   -1 - limit exceeded
 */
static int check_call_limit(void)
{
    if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) {
        atomic_dec(&TASK->active_calls);
        return -1;
    }
    return 0;
}
 
/** Send an asynchronous call over ipc
 *
 * @return Call identification, returns -1 on fatal error,
           -2 on 'Too many async request, handle answers first
 */
__native sys_ipc_call_async_fast(__native phoneid, __native method,
                 __native arg1, __native arg2)
{
    call_t *call;
    phone_t *phone;
    int res;
 
    if (check_call_limit())
        return IPC_CALLRET_TEMPORARY;
 
    GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);
 
    call = ipc_call_alloc(0);
    IPC_SET_METHOD(call->data, method);
    IPC_SET_ARG1(call->data, arg1);
    IPC_SET_ARG2(call->data, arg2);
 
    if (!(res=request_preprocess(call)))
        ipc_call(phone, call);
    else
        ipc_backsend_err(phone, call, res);
 
    return (__native) call;
}
 
/** Synchronous IPC call allowing to send whole message
 *
 * @return The same as sys_ipc_call_async
 */
__native sys_ipc_call_async(__native phoneid, ipc_data_t *data)
{
    call_t *call;
    phone_t *phone;
    int res;
 
    if (check_call_limit())
        return IPC_CALLRET_TEMPORARY;
 
    GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);
 
    call = ipc_call_alloc(0);
    copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args));
    if (!(res=request_preprocess(call)))
        ipc_call(phone, call);
    else
        ipc_backsend_err(phone, call, res);
 
    return (__native) call;
}
 
/** Forward received call to another destination
 *
 * The arg1 and arg2 are changed in the forwarded message
 *
 * Warning: If implementing non-fast version, make sure that
 *          arg3 is not rewritten for certain system IPC
 */
__native sys_ipc_forward_fast(__native callid, __native phoneid,
                  __native method, __native arg1)
{
    call_t *call;
    phone_t *phone;
 
    call = get_call(callid);
    if (!call)
        return ENOENT;
 
    call->flags |= IPC_CALL_FORWARDED;
 
    GET_CHECK_PHONE(phone, phoneid, {
        IPC_SET_RETVAL(call->data, EFORWARD);
        ipc_answer(&TASK->answerbox, call);
        return ENOENT;
    });    
 
    if (!is_forwardable(IPC_GET_METHOD(call->data))) {
        IPC_SET_RETVAL(call->data, EFORWARD);
        ipc_answer(&TASK->answerbox, call);
        return EPERM;
    }
 
    /* Userspace is not allowed to change method of system methods
     * on forward, allow changing ARG1 and ARG2 by means of method and arg1
     */
    if (is_system_method(IPC_GET_METHOD(call->data))) {
        if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME)
            phone_dealloc(IPC_GET_ARG3(call->data));
 
        IPC_SET_ARG1(call->data, method);
        IPC_SET_ARG2(call->data, arg1);
    } else {
        IPC_SET_METHOD(call->data, method);
        IPC_SET_ARG1(call->data, arg1);
    }
 
    return ipc_forward(call, phone, &TASK->answerbox);
}
 
/** Send IPC answer */
__native sys_ipc_answer_fast(__native callid, __native retval,
                 __native arg1, __native arg2)
{
    call_t *call;
    ipc_data_t saved_data;
    int saveddata = 0;
 
    call = get_call(callid);
    if (!call)
        return ENOENT;
 
    if (answer_need_old(call)) {
        memcpy(&saved_data, &call->data, sizeof(call->data));
        saveddata = 1;
    }
 
    IPC_SET_RETVAL(call->data, retval);
    IPC_SET_ARG1(call->data, arg1);
    IPC_SET_ARG2(call->data, arg2);
    answer_preprocess(call, saveddata ? &saved_data : NULL);
 
    ipc_answer(&TASK->answerbox, call);
    return 0;
}
 
/** Send IPC answer */
__native sys_ipc_answer(__native callid, ipc_data_t *data)
{
    call_t *call;
    ipc_data_t saved_data;
    int saveddata = 0;
 
    call = get_call(callid);
    if (!call)
        return ENOENT;
 
    if (answer_need_old(call)) {
        memcpy(&saved_data, &call->data, sizeof(call->data));
        saveddata = 1;
    }
    copy_from_uspace(&call->data.args, &data->args,
             sizeof(call->data.args));
 
    answer_preprocess(call, saveddata ? &saved_data : NULL);
   
    ipc_answer(&TASK->answerbox, call);
 
    return 0;
}
 
/** Hang up the phone
 *
 */
__native sys_ipc_hangup(int phoneid)
{
    phone_t *phone;
 
    GET_CHECK_PHONE(phone, phoneid, return ENOENT);
 
    if (ipc_phone_hangup(phone))
        return -1;
 
    return 0;
}
 
/** Wait for incoming ipc call or answer
 *
 * @param calldata Pointer to buffer where the call/answer data is stored
 * @param flags
 * @return Callid, if callid & 1, then the call is answer
 */
__native sys_ipc_wait_for_call(ipc_data_t *calldata, __native flags)
{
    call_t *call;
 
restart:   
    call = ipc_wait_for_call(&TASK->answerbox, flags);
    if (!call)
        return 0;
 
    if (call->flags & IPC_CALL_NOTIF) {
        ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));
        STRUCT_TO_USPACE(&calldata->args, &call->data.args);
        ipc_call_free(call);
       
        return ((__native)call) | IPC_CALLID_NOTIFICATION;
    }
 
    if (call->flags & IPC_CALL_ANSWERED) {
        process_answer(call);
 
        ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));
 
        atomic_dec(&TASK->active_calls);
 
        if (call->flags & IPC_CALL_DISCARD_ANSWER) {
            ipc_call_free(call);
            goto restart;
        }
 
        STRUCT_TO_USPACE(&calldata->args, &call->data.args);
        ipc_call_free(call);
 
        return ((__native)call) | IPC_CALLID_ANSWERED;
    }
 
    if (process_request(&TASK->answerbox, call))
        goto restart;
 
    /* Include phone address('id') of the caller in the request,
     * copy whole call->data, not only call->data.args */
    STRUCT_TO_USPACE(calldata, &call->data);
    return (__native)call;
}
 
/** Connect irq handler to task */
__native sys_ipc_register_irq(__native irq, irq_code_t *ucode)
{
    if (irq >= IRQ_COUNT)
        return -ELIMIT;
 
    irq_ipc_bind_arch(irq);
 
    return ipc_irq_register(&TASK->answerbox, irq, ucode);
}
 
/* Disconnect irq handler from task */
__native sys_ipc_unregister_irq(__native irq)
{
    if (irq >= IRQ_COUNT)
        return -ELIMIT;
 
    ipc_irq_unregister(&TASK->answerbox, irq);
 
    return 0;
}
 

Rev 1258	Rev 1281
1	/*	1	/*
2	* Copyright (C) 2006 Ondrej Palkovsky	2	* Copyright (C) 2006 Ondrej Palkovsky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	13	* documentation and/or other materials provided with the distribution.
14	* - The name of the author may not be used to endorse or promote products	14	* - The name of the author may not be used to endorse or promote products
15	* derived from this software without specific prior written permission.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	#include <arch.h>	29	#include <arch.h>
30	#include <proc/task.h>	30	#include <proc/task.h>
31		31
32	#include <errno.h>	32	#include <errno.h>
33	#include <mm/page.h>	33	#include <mm/page.h>
34	#include <memstr.h>	34	#include <memstr.h>
35	#include <debug.h>	35	#include <debug.h>
36	#include <ipc/ipc.h>	36	#include <ipc/ipc.h>
37	#include <ipc/sysipc.h>	37	#include <ipc/sysipc.h>
-		38	#include <ipc/irq.h>
38	#include <ipc/ipcrsc.h>	39	#include <ipc/ipcrsc.h>
39	#include <arch/interrupt.h>	40	#include <arch/interrupt.h>
40		41
41	#include <print.h>	42	#include <print.h>
42	#include <arch.h>	43	#include <arch.h>
43	#include <proc/thread.h>	44	#include <proc/thread.h>
44		45
45	#define GET_CHECK_PHONE(phone,phoneid,err) { \	46	#define GET_CHECK_PHONE(phone,phoneid,err) { \
46	if (phoneid > IPC_MAX_PHONES) { err; } \	47	if (phoneid > IPC_MAX_PHONES) { err; } \
47	phone = &TASK->phones[phoneid]; \	48	phone = &TASK->phones[phoneid]; \
48	}	49	}
49		50
50	#define STRUCT_TO_USPACE(dst,src) copy_to_uspace(dst,src,sizeof(*(src)))	51	#define STRUCT_TO_USPACE(dst,src) copy_to_uspace(dst,src,sizeof(*(src)))
51		52
52	/** Return true if the method is a system method */	53	/** Return true if the method is a system method */
53	static inline int is_system_method(__native method)	54	static inline int is_system_method(__native method)
54	{	55	{
55	if (method <= IPC_M_LAST_SYSTEM)	56	if (method <= IPC_M_LAST_SYSTEM)
56	return 1;	57	return 1;
57	return 0;	58	return 0;
58	}	59	}
59		60
60	/** Return true if the message with this method is forwardable	61	/** Return true if the message with this method is forwardable
61	*	62	*
62	* - some system messages may be forwarded, for some of them	63	* - some system messages may be forwarded, for some of them
63	* it is useless	64	* it is useless
64	*/	65	*/
65	static inline int is_forwardable(__native method)	66	static inline int is_forwardable(__native method)
66	{	67	{
67	if (method == IPC_M_PHONE_HUNGUP)	68	if (method == IPC_M_PHONE_HUNGUP)
68	return 0; /* This message is meant only for the receiver */	69	return 0; /* This message is meant only for the receiver */
69	return 1;	70	return 1;
70	}	71	}
71		72
72	/****************************************************/	73	/****************************************************/
73	/* Functions that preprocess answer before sending	74	/* Functions that preprocess answer before sending
74	* it to the recepient	75	* it to the recepient
75	*/	76	*/
76		77
77	/** Return true if the caller (ipc_answer) should save	78	/** Return true if the caller (ipc_answer) should save
78	* the old call contents for answer_preprocess	79	* the old call contents for answer_preprocess
79	*/	80	*/
80	static inline int answer_need_old(call_t *call)	81	static inline int answer_need_old(call_t *call)
81	{	82	{
82	if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME)	83	if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME)
83	return 1;	84	return 1;
84	if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO)	85	if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_ME_TO)
85	return 1;	86	return 1;
86	return 0;	87	return 0;
87	}	88	}
88		89
89	/** Interpret process answer as control information */	90	/** Interpret process answer as control information */
90	static inline void answer_preprocess(call_t answer, ipc_data_t olddata)	91	static inline void answer_preprocess(call_t answer, ipc_data_t olddata)
91	{	92	{
92	int phoneid;	93	int phoneid;
93		94
94	if (IPC_GET_RETVAL(answer->data) == EHANGUP) {	95	if (IPC_GET_RETVAL(answer->data) == EHANGUP) {
95	/* In case of forward, hangup the forwared phone,	96	/* In case of forward, hangup the forwared phone,
96	* not the originator	97	* not the originator
97	*/	98	*/
98	spinlock_lock(&answer->data.phone->lock);	99	spinlock_lock(&answer->data.phone->lock);
99	spinlock_lock(&TASK->answerbox.lock);	100	spinlock_lock(&TASK->answerbox.lock);
100	if (answer->data.phone->callee) {	101	if (answer->data.phone->callee) {
101	list_remove(&answer->data.phone->list);	102	list_remove(&answer->data.phone->list);
102	answer->data.phone->callee = 0;	103	answer->data.phone->callee = 0;
103	}	104	}
104	spinlock_unlock(&TASK->answerbox.lock);	105	spinlock_unlock(&TASK->answerbox.lock);
105	spinlock_unlock(&answer->data.phone->lock);	106	spinlock_unlock(&answer->data.phone->lock);
106	}	107	}
107		108
108	if (!olddata)	109	if (!olddata)
109	return;	110	return;
110		111
111	if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) {	112	if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) {
112	phoneid = IPC_GET_ARG3(*olddata);	113	phoneid = IPC_GET_ARG3(*olddata);
113	if (IPC_GET_RETVAL(answer->data)) {	114	if (IPC_GET_RETVAL(answer->data)) {
114	/* The connection was not accepted */	115	/* The connection was not accepted */
115	phone_dealloc(phoneid);	116	phone_dealloc(phoneid);
116	} else {	117	} else {
117	/* The connection was accepted */	118	/* The connection was accepted */
118	phone_connect(phoneid,&answer->sender->answerbox);	119	phone_connect(phoneid,&answer->sender->answerbox);
119	/* Set 'phone identification' as arg3 of response */	120	/* Set 'phone identification' as arg3 of response */
120	IPC_SET_ARG3(answer->data, (__native)&TASK->phones[phoneid]);	121	IPC_SET_ARG3(answer->data, (__native)&TASK->phones[phoneid]);
121	}	122	}
122	} else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) {	123	} else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) {
123	/* If the users accepted call, connect */	124	/* If the users accepted call, connect */
124	if (!IPC_GET_RETVAL(answer->data)) {	125	if (!IPC_GET_RETVAL(answer->data)) {
125	ipc_phone_connect((phone_t )IPC_GET_ARG3(olddata),	126	ipc_phone_connect((phone_t )IPC_GET_ARG3(olddata),
126	&TASK->answerbox);	127	&TASK->answerbox);
127	}	128	}
128	}	129	}
129	}	130	}
130		131
131	/** Called before the request is sent	132	/** Called before the request is sent
132	*	133	*
133	* @return 0 - no error, -1 - report error to user	134	* @return 0 - no error, -1 - report error to user
134	*/	135	*/
135	static int request_preprocess(call_t *call)	136	static int request_preprocess(call_t *call)
136	{	137	{
137	int newphid;	138	int newphid;
138		139
139	switch (IPC_GET_METHOD(call->data)) {	140	switch (IPC_GET_METHOD(call->data)) {
140	case IPC_M_CONNECT_ME_TO:	141	case IPC_M_CONNECT_ME_TO:
141	newphid = phone_alloc();	142	newphid = phone_alloc();
142	if (newphid < 0)	143	if (newphid < 0)
143	return ELIMIT;	144	return ELIMIT;
144	/* Set arg3 for server */	145	/* Set arg3 for server */
145	IPC_SET_ARG3(call->data, (__native)&TASK->phones[newphid]);	146	IPC_SET_ARG3(call->data, (__native)&TASK->phones[newphid]);
146	call->flags \|= IPC_CALL_CONN_ME_TO;	147	call->flags \|= IPC_CALL_CONN_ME_TO;
147	call->private = newphid;	148	call->private = newphid;
148	break;	149	break;
149	default:	150	default:
150	break;	151	break;
151	}	152	}
152	return 0;	153	return 0;
153	}	154	}
154		155
155	/****************************************************/	156	/****************************************************/
156	/* Functions called to process received call/answer	157	/* Functions called to process received call/answer
157	* before passing to uspace	158	* before passing to uspace
158	*/	159	*/
159		160
160	/** Do basic kernel processing of received call answer */	161	/** Do basic kernel processing of received call answer */
161	static void process_answer(call_t *call)	162	static void process_answer(call_t *call)
162	{	163	{
163	if (IPC_GET_RETVAL(call->data) == EHANGUP && \	164	if (IPC_GET_RETVAL(call->data) == EHANGUP && \
164	call->flags & IPC_CALL_FORWARDED)	165	call->flags & IPC_CALL_FORWARDED)
165	IPC_SET_RETVAL(call->data, EFORWARD);	166	IPC_SET_RETVAL(call->data, EFORWARD);
166		167
167	if (call->flags & IPC_CALL_CONN_ME_TO) {	168	if (call->flags & IPC_CALL_CONN_ME_TO) {
168	if (IPC_GET_RETVAL(call->data))	169	if (IPC_GET_RETVAL(call->data))
169	phone_dealloc(call->private);	170	phone_dealloc(call->private);
170	else	171	else
171	IPC_SET_ARG3(call->data, call->private);	172	IPC_SET_ARG3(call->data, call->private);
172	}	173	}
173	}	174	}
174		175
175	/** Do basic kernel processing of received call request	176	/** Do basic kernel processing of received call request
176	*	177	*
177	* @return 0 - the call should be passed to userspace, 1 - ignore call	178	* @return 0 - the call should be passed to userspace, 1 - ignore call
178	*/	179	*/
179	static int process_request(answerbox_t box,call_t call)	180	static int process_request(answerbox_t box,call_t call)
180	{	181	{
181	int phoneid;	182	int phoneid;
182		183
183	if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) {	184	if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) {
184	phoneid = phone_alloc();	185	phoneid = phone_alloc();
185	if (phoneid < 0) { /* Failed to allocate phone */	186	if (phoneid < 0) { /* Failed to allocate phone */
186	IPC_SET_RETVAL(call->data, ELIMIT);	187	IPC_SET_RETVAL(call->data, ELIMIT);
187	ipc_answer(box,call);	188	ipc_answer(box,call);
188	return -1;	189	return -1;
189	}	190	}
190	IPC_SET_ARG3(call->data, phoneid);	191	IPC_SET_ARG3(call->data, phoneid);
191	}	192	}
192	return 0;	193	return 0;
193	}	194	}
194		195
195	/** Send a call over IPC, wait for reply, return to user	196	/** Send a call over IPC, wait for reply, return to user
196	*	197	*
197	* @return Call identification, returns -1 on fatal error,	198	* @return Call identification, returns -1 on fatal error,
198	-2 on 'Too many async request, handle answers first	199	-2 on 'Too many async request, handle answers first
199	*/	200	*/
200	__native sys_ipc_call_sync_fast(__native phoneid, __native method,	201	__native sys_ipc_call_sync_fast(__native phoneid, __native method,
201	__native arg1, ipc_data_t *data)	202	__native arg1, ipc_data_t *data)
202	{	203	{
203	call_t call;	204	call_t call;
204	phone_t *phone;	205	phone_t *phone;
205	int res;	206	int res;
206		207
207	GET_CHECK_PHONE(phone, phoneid, return ENOENT);	208	GET_CHECK_PHONE(phone, phoneid, return ENOENT);
208		209
209	ipc_call_static_init(&call);	210	ipc_call_static_init(&call);
210	IPC_SET_METHOD(call.data, method);	211	IPC_SET_METHOD(call.data, method);
211	IPC_SET_ARG1(call.data, arg1);	212	IPC_SET_ARG1(call.data, arg1);
212		213
213	if (!(res=request_preprocess(&call))) {	214	if (!(res=request_preprocess(&call))) {
214	ipc_call_sync(phone, &call);	215	ipc_call_sync(phone, &call);
215	process_answer(&call);	216	process_answer(&call);
216	} else	217	} else
217	IPC_SET_RETVAL(call.data, res);	218	IPC_SET_RETVAL(call.data, res);
218	STRUCT_TO_USPACE(&data->args, &call.data.args);	219	STRUCT_TO_USPACE(&data->args, &call.data.args);
219		220
220	return 0;	221	return 0;
221	}	222	}
222		223
223	/** Synchronous IPC call allowing to send whole message */	224	/** Synchronous IPC call allowing to send whole message */
224	__native sys_ipc_call_sync(__native phoneid, ipc_data_t *question,	225	__native sys_ipc_call_sync(__native phoneid, ipc_data_t *question,
225	ipc_data_t *reply)	226	ipc_data_t *reply)
226	{	227	{
227	call_t call;	228	call_t call;
228	phone_t *phone;	229	phone_t *phone;
229	int res;	230	int res;
230		231
231	ipc_call_static_init(&call);	232	ipc_call_static_init(&call);
232	copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args));	233	copy_from_uspace(&call.data.args, &question->args, sizeof(call.data.args));
233		234
234	GET_CHECK_PHONE(phone, phoneid, return ENOENT);	235	GET_CHECK_PHONE(phone, phoneid, return ENOENT);
235		236
236	if (!(res=request_preprocess(&call))) {	237	if (!(res=request_preprocess(&call))) {
237	ipc_call_sync(phone, &call);	238	ipc_call_sync(phone, &call);
238	process_answer(&call);	239	process_answer(&call);
239	} else	240	} else
240	IPC_SET_RETVAL(call.data, res);	241	IPC_SET_RETVAL(call.data, res);
241		242
242	STRUCT_TO_USPACE(&reply->args, &call.data.args);	243	STRUCT_TO_USPACE(&reply->args, &call.data.args);
243		244
244	return 0;	245	return 0;
245	}	246	}
246		247
247	/** Check that the task did not exceed allowed limit	248	/** Check that the task did not exceed allowed limit
248	*	249	*
249	* @return 0 - Limit OK, -1 - limit exceeded	250	* @return 0 - Limit OK, -1 - limit exceeded
250	*/	251	*/
251	static int check_call_limit(void)	252	static int check_call_limit(void)
252	{	253	{
253	if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) {	254	if (atomic_preinc(&TASK->active_calls) > IPC_MAX_ASYNC_CALLS) {
254	atomic_dec(&TASK->active_calls);	255	atomic_dec(&TASK->active_calls);
255	return -1;	256	return -1;
256	}	257	}
257	return 0;	258	return 0;
258	}	259	}
259		260
260	/** Send an asynchronous call over ipc	261	/** Send an asynchronous call over ipc
261	*	262	*
262	* @return Call identification, returns -1 on fatal error,	263	* @return Call identification, returns -1 on fatal error,
263	-2 on 'Too many async request, handle answers first	264	-2 on 'Too many async request, handle answers first
264	*/	265	*/
265	__native sys_ipc_call_async_fast(__native phoneid, __native method,	266	__native sys_ipc_call_async_fast(__native phoneid, __native method,
266	__native arg1, __native arg2)	267	__native arg1, __native arg2)
267	{	268	{
268	call_t *call;	269	call_t *call;
269	phone_t *phone;	270	phone_t *phone;
270	int res;	271	int res;
271		272
272	if (check_call_limit())	273	if (check_call_limit())
273	return IPC_CALLRET_TEMPORARY;	274	return IPC_CALLRET_TEMPORARY;
274		275
275	GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);	276	GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);
276		277
277	call = ipc_call_alloc(0);	278	call = ipc_call_alloc(0);
278	IPC_SET_METHOD(call->data, method);	279	IPC_SET_METHOD(call->data, method);
279	IPC_SET_ARG1(call->data, arg1);	280	IPC_SET_ARG1(call->data, arg1);
280	IPC_SET_ARG2(call->data, arg2);	281	IPC_SET_ARG2(call->data, arg2);
281		282
282	if (!(res=request_preprocess(call)))	283	if (!(res=request_preprocess(call)))
283	ipc_call(phone, call);	284	ipc_call(phone, call);
284	else	285	else
285	ipc_backsend_err(phone, call, res);	286	ipc_backsend_err(phone, call, res);
286		287
287	return (__native) call;	288	return (__native) call;
288	}	289	}
289		290
290	/** Synchronous IPC call allowing to send whole message	291	/** Synchronous IPC call allowing to send whole message
291	*	292	*
292	* @return The same as sys_ipc_call_async	293	* @return The same as sys_ipc_call_async
293	*/	294	*/
294	__native sys_ipc_call_async(__native phoneid, ipc_data_t *data)	295	__native sys_ipc_call_async(__native phoneid, ipc_data_t *data)
295	{	296	{
296	call_t *call;	297	call_t *call;
297	phone_t *phone;	298	phone_t *phone;
298	int res;	299	int res;
299		300
300	if (check_call_limit())	301	if (check_call_limit())
301	return IPC_CALLRET_TEMPORARY;	302	return IPC_CALLRET_TEMPORARY;
302		303
303	GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);	304	GET_CHECK_PHONE(phone, phoneid, return IPC_CALLRET_FATAL);
304		305
305	call = ipc_call_alloc(0);	306	call = ipc_call_alloc(0);
306	copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args));	307	copy_from_uspace(&call->data.args, &data->args, sizeof(call->data.args));
307	if (!(res=request_preprocess(call)))	308	if (!(res=request_preprocess(call)))
308	ipc_call(phone, call);	309	ipc_call(phone, call);
309	else	310	else
310	ipc_backsend_err(phone, call, res);	311	ipc_backsend_err(phone, call, res);
311		312
312	return (__native) call;	313	return (__native) call;
313	}	314	}
314		315
315	/** Forward received call to another destination	316	/** Forward received call to another destination
316	*	317	*
317	* The arg1 and arg2 are changed in the forwarded message	318	* The arg1 and arg2 are changed in the forwarded message
318	*	319	*
319	* Warning: If implementing non-fast version, make sure that	320	* Warning: If implementing non-fast version, make sure that
320	* arg3 is not rewritten for certain system IPC	321	* arg3 is not rewritten for certain system IPC
321	*/	322	*/
322	__native sys_ipc_forward_fast(__native callid, __native phoneid,	323	__native sys_ipc_forward_fast(__native callid, __native phoneid,
323	__native method, __native arg1)	324	__native method, __native arg1)
324	{	325	{
325	call_t *call;	326	call_t *call;
326	phone_t *phone;	327	phone_t *phone;
327		328
328	call = get_call(callid);	329	call = get_call(callid);
329	if (!call)	330	if (!call)
330	return ENOENT;	331	return ENOENT;
331		332
332	call->flags \|= IPC_CALL_FORWARDED;	333	call->flags \|= IPC_CALL_FORWARDED;
333		334
334	GET_CHECK_PHONE(phone, phoneid, {	335	GET_CHECK_PHONE(phone, phoneid, {
335	IPC_SET_RETVAL(call->data, EFORWARD);	336	IPC_SET_RETVAL(call->data, EFORWARD);
336	ipc_answer(&TASK->answerbox, call);	337	ipc_answer(&TASK->answerbox, call);
337	return ENOENT;	338	return ENOENT;
338	});	339	});
339		340
340	if (!is_forwardable(IPC_GET_METHOD(call->data))) {	341	if (!is_forwardable(IPC_GET_METHOD(call->data))) {
341	IPC_SET_RETVAL(call->data, EFORWARD);	342	IPC_SET_RETVAL(call->data, EFORWARD);
342	ipc_answer(&TASK->answerbox, call);	343	ipc_answer(&TASK->answerbox, call);
343	return EPERM;	344	return EPERM;
344	}	345	}
345		346
346	/* Userspace is not allowed to change method of system methods	347	/* Userspace is not allowed to change method of system methods
347	* on forward, allow changing ARG1 and ARG2 by means of method and arg1	348	* on forward, allow changing ARG1 and ARG2 by means of method and arg1
348	*/	349	*/
349	if (is_system_method(IPC_GET_METHOD(call->data))) {	350	if (is_system_method(IPC_GET_METHOD(call->data))) {
350	if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME)	351	if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME)
351	phone_dealloc(IPC_GET_ARG3(call->data));	352	phone_dealloc(IPC_GET_ARG3(call->data));
352		353
353	IPC_SET_ARG1(call->data, method);	354	IPC_SET_ARG1(call->data, method);
354	IPC_SET_ARG2(call->data, arg1);	355	IPC_SET_ARG2(call->data, arg1);
355	} else {	356	} else {
356	IPC_SET_METHOD(call->data, method);	357	IPC_SET_METHOD(call->data, method);
357	IPC_SET_ARG1(call->data, arg1);	358	IPC_SET_ARG1(call->data, arg1);
358	}	359	}
359		360
360	return ipc_forward(call, phone, &TASK->answerbox);	361	return ipc_forward(call, phone, &TASK->answerbox);
361	}	362	}
362		363
363	/** Send IPC answer */	364	/** Send IPC answer */
364	__native sys_ipc_answer_fast(__native callid, __native retval,	365	__native sys_ipc_answer_fast(__native callid, __native retval,
365	__native arg1, __native arg2)	366	__native arg1, __native arg2)
366	{	367	{
367	call_t *call;	368	call_t *call;
368	ipc_data_t saved_data;	369	ipc_data_t saved_data;
369	int saveddata = 0;	370	int saveddata = 0;
370		371
371	call = get_call(callid);	372	call = get_call(callid);
372	if (!call)	373	if (!call)
373	return ENOENT;	374	return ENOENT;
374		375
375	if (answer_need_old(call)) {	376	if (answer_need_old(call)) {
376	memcpy(&saved_data, &call->data, sizeof(call->data));	377	memcpy(&saved_data, &call->data, sizeof(call->data));
377	saveddata = 1;	378	saveddata = 1;
378	}	379	}
379		380
380	IPC_SET_RETVAL(call->data, retval);	381	IPC_SET_RETVAL(call->data, retval);
381	IPC_SET_ARG1(call->data, arg1);	382	IPC_SET_ARG1(call->data, arg1);
382	IPC_SET_ARG2(call->data, arg2);	383	IPC_SET_ARG2(call->data, arg2);
383	answer_preprocess(call, saveddata ? &saved_data : NULL);	384	answer_preprocess(call, saveddata ? &saved_data : NULL);
384		385
385	ipc_answer(&TASK->answerbox, call);	386	ipc_answer(&TASK->answerbox, call);
386	return 0;	387	return 0;
387	}	388	}
388		389
389	/** Send IPC answer */	390	/** Send IPC answer */
390	__native sys_ipc_answer(__native callid, ipc_data_t *data)	391	__native sys_ipc_answer(__native callid, ipc_data_t *data)
391	{	392	{
392	call_t *call;	393	call_t *call;
393	ipc_data_t saved_data;	394	ipc_data_t saved_data;
394	int saveddata = 0;	395	int saveddata = 0;
395		396
396	call = get_call(callid);	397	call = get_call(callid);
397	if (!call)	398	if (!call)
398	return ENOENT;	399	return ENOENT;
399		400
400	if (answer_need_old(call)) {	401	if (answer_need_old(call)) {
401	memcpy(&saved_data, &call->data, sizeof(call->data));	402	memcpy(&saved_data, &call->data, sizeof(call->data));
402	saveddata = 1;	403	saveddata = 1;
403	}	404	}
404	copy_from_uspace(&call->data.args, &data->args,	405	copy_from_uspace(&call->data.args, &data->args,
405	sizeof(call->data.args));	406	sizeof(call->data.args));
406		407
407	answer_preprocess(call, saveddata ? &saved_data : NULL);	408	answer_preprocess(call, saveddata ? &saved_data : NULL);
408		409
409	ipc_answer(&TASK->answerbox, call);	410	ipc_answer(&TASK->answerbox, call);
410		411
411	return 0;	412	return 0;
412	}	413	}
413		414
414	/** Hang up the phone	415	/** Hang up the phone
415	*	416	*
416	*/	417	*/
417	__native sys_ipc_hangup(int phoneid)	418	__native sys_ipc_hangup(int phoneid)
418	{	419	{
419	phone_t *phone;	420	phone_t *phone;
420		421
421	GET_CHECK_PHONE(phone, phoneid, return ENOENT);	422	GET_CHECK_PHONE(phone, phoneid, return ENOENT);
422		423
423	if (ipc_phone_hangup(phone))	424	if (ipc_phone_hangup(phone))
424	return -1;	425	return -1;
425		426
426	return 0;	427	return 0;
427	}	428	}
428		429
429	/** Wait for incoming ipc call or answer	430	/** Wait for incoming ipc call or answer
430	*	431	*
431	* @param calldata Pointer to buffer where the call/answer data is stored	432	* @param calldata Pointer to buffer where the call/answer data is stored
432	* @param flags	433	* @param flags
433	* @return Callid, if callid & 1, then the call is answer	434	* @return Callid, if callid & 1, then the call is answer
434	*/	435	*/
435	__native sys_ipc_wait_for_call(ipc_data_t *calldata, __native flags)	436	__native sys_ipc_wait_for_call(ipc_data_t *calldata, __native flags)
436	{	437	{
437	call_t *call;	438	call_t *call;
438		439
439	restart:	440	restart:
440	call = ipc_wait_for_call(&TASK->answerbox, flags);	441	call = ipc_wait_for_call(&TASK->answerbox, flags);
441	if (!call)	442	if (!call)
442	return 0;	443	return 0;
443		444
444	if (call->flags & IPC_CALL_NOTIF) {	445	if (call->flags & IPC_CALL_NOTIF) {
445	ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));	446	ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));
446	STRUCT_TO_USPACE(&calldata->args, &call->data.args);	447	STRUCT_TO_USPACE(&calldata->args, &call->data.args);
447	ipc_call_free(call);	448	ipc_call_free(call);
448		449
449	return ((__native)call) \| IPC_CALLID_NOTIFICATION;	450	return ((__native)call) \| IPC_CALLID_NOTIFICATION;
450	}	451	}
451		452
452	if (call->flags & IPC_CALL_ANSWERED) {	453	if (call->flags & IPC_CALL_ANSWERED) {
453	process_answer(call);	454	process_answer(call);
454		455
455	ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));	456	ASSERT(! (call->flags & IPC_CALL_STATIC_ALLOC));
456		457
457	atomic_dec(&TASK->active_calls);	458	atomic_dec(&TASK->active_calls);
458		459
459	if (call->flags & IPC_CALL_DISCARD_ANSWER) {	460	if (call->flags & IPC_CALL_DISCARD_ANSWER) {
460	ipc_call_free(call);	461	ipc_call_free(call);
461	goto restart;	462	goto restart;
462	}	463	}
463		464
464	STRUCT_TO_USPACE(&calldata->args, &call->data.args);	465	STRUCT_TO_USPACE(&calldata->args, &call->data.args);
465	ipc_call_free(call);	466	ipc_call_free(call);
466		467
467	return ((__native)call) \| IPC_CALLID_ANSWERED;	468	return ((__native)call) \| IPC_CALLID_ANSWERED;
468	}	469	}
469		470
470	if (process_request(&TASK->answerbox, call))	471	if (process_request(&TASK->answerbox, call))
471	goto restart;	472	goto restart;
472		473
473	/* Include phone address('id') of the caller in the request,	474	/* Include phone address('id') of the caller in the request,
474	* copy whole call->data, not only call->data.args */	475	* copy whole call->data, not only call->data.args */
475	STRUCT_TO_USPACE(calldata, &call->data);	476	STRUCT_TO_USPACE(calldata, &call->data);
476	return (__native)call;	477	return (__native)call;
477	}	478	}
478		479
479	/** Connect irq handler to task */	480	/** Connect irq handler to task */
480	__native sys_ipc_register_irq(__native irq)	481	__native sys_ipc_register_irq(__native irq, irq_code_t *ucode)
481	{	482	{
482	if (irq >= IRQ_COUNT)	483	if (irq >= IRQ_COUNT)
483	return -ELIMIT;	484	return -ELIMIT;
484		485
485	irq_ipc_bind_arch(irq);	486	irq_ipc_bind_arch(irq);
-		487
486	return ipc_irq_register(&TASK->answerbox, irq);	488	return ipc_irq_register(&TASK->answerbox, irq, ucode);
487	}	489	}
488		490
489	/* Disconnect irq handler from task */	491	/* Disconnect irq handler from task */
490	__native sys_ipc_unregister_irq(__native irq)	492	__native sys_ipc_unregister_irq(__native irq)
491	{	493	{
492	if (irq >= IRQ_COUNT)	494	if (irq >= IRQ_COUNT)
493	return -ELIMIT;	495	return -ELIMIT;
494		496
495	ipc_irq_unregister(&TASK->answerbox, irq);	497	ipc_irq_unregister(&TASK->answerbox, irq);
496		498
497	return 0;	499	return 0;
498	}	500	}

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/generic/src/ipc/sysipc.c – Rev 1258 → 1281