WebSVN – HelenOS – Diff – /branches/dynload/uspace/lib/libc/generic/task.c


/*
 * Copyright (c) 2006 Jakub Jermar
 * Copyright (c) 2008 Jiri Svoboda
 * 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 libc
 * @{
 */
/** @file
 */
 
#include <task.h>
#include <ipc/ipc.h>
#include <ipc/loader.h>
#include <libc.h>
#include <string.h>
#include <async.h>
#include <errno.h>
 
task_id_t task_get_id(void)
{
    task_id_t task_id;
 
    (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
 
    return task_id;
}
 
static int task_spawn_loader(void)
{
    int phone_id, rc;
 
    rc = __SYSCALL1(SYS_TASK_SPAWN_LOADER, (sysarg_t) &phone_id);
    if (rc != 0)
        return rc;
 
    return phone_id;
}
 
/** Create a new task by running an executable from VFS.
 *
 * @param path  pathname of the binary to execute
 * @param argv  command-line arguments
 * @return  ID of the newly created task or zero on error.
 */
task_id_t task_spawn_ex(const char *path, const char *argv[])
{
    int phone_id;
    ipc_call_t answer;
    aid_t req;
    int rc;
 
    /* Spawn a program loader */   
    phone_id = task_spawn_loader();
    if (phone_id < 0) return 0;
 
    /*
     * Say hello so that the loader knows the incoming connection's
     * phone hash.
     */
    rc = async_req_0_0(phone_id, LOADER_HELLO);
    if (rc != EOK) return 0;
 
    /* Send program pathname */
    req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer);
    rc = ipc_data_write_start(phone_id, (void *)path, strlen(path));
    if (rc != EOK) {
        async_wait_for(req, NULL);
        return 1;
    }
 
    async_wait_for(req, &rc);
    if (rc != EOK) return 0;
 
    /* Request loader to start the program */  
    rc = async_req_0_0(phone_id, LOADER_RUN);
    if (rc != EOK) return 0;
 
    ipc_hangup(phone_id);
 
    return 1;
}
 
int task_spawn(void *image, size_t size)
{
    return __SYSCALL2(SYS_TASK_SPAWN, (sysarg_t) image, (sysarg_t) size);
}
 
/** @}
 */
 

Rev 3148	Rev 3150
1	/*	1	/*
2	* Copyright (c) 2006 Jakub Jermar	2	* Copyright (c) 2006 Jakub Jermar
3	* Copyright (c) 2008 Jiri Svoboda	3	* Copyright (c) 2008 Jiri Svoboda
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	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	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.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	/** @addtogroup libc	30	/** @addtogroup libc
31	* @{	31	* @{
32	*/	32	*/
33	/** @file	33	/** @file
34	*/	34	*/
35		35
36	#include <task.h>	36	#include <task.h>
37	#include <ipc/ipc.h>	37	#include <ipc/ipc.h>
38	#include <ipc/loader.h>	38	#include <ipc/loader.h>
39	#include <libc.h>	39	#include <libc.h>
40	#include <string.h>	40	#include <string.h>
41	#include <async.h>	41	#include <async.h>
42	#include <errno.h>	42	#include <errno.h>
43		43
44	task_id_t task_get_id(void)	44	task_id_t task_get_id(void)
45	{	45	{
46	task_id_t task_id;	46	task_id_t task_id;
47		47
48	(void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);	48	(void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
49		49
50	return task_id;	50	return task_id;
51	}	51	}
52		52
53	static int task_spawn_loader(void)	53	static int task_spawn_loader(void)
54	{	54	{
55	int phone_id, rc;	55	int phone_id, rc;
56		56
57	rc = __SYSCALL1(SYS_TASK_SPAWN, (sysarg_t) &phone_id);	57	rc = __SYSCALL1(SYS_TASK_SPAWN_LOADER, (sysarg_t) &phone_id);
58	if (rc != 0)	58	if (rc != 0)
59	return rc;	59	return rc;
60		60
61	return phone_id;	61	return phone_id;
62	}	62	}
63		63
64	/** Create a new task by running an executable from VFS.	64	/** Create a new task by running an executable from VFS.
65	*	65	*
66	* @param path pathname of the binary to execute	66	* @param path pathname of the binary to execute
67	* @param argv command-line arguments	67	* @param argv command-line arguments
68	* @return ID of the newly created task or zero on error.	68	* @return ID of the newly created task or zero on error.
69	*/	69	*/
70	task_id_t task_spawn(const char path, const char argv[])	70	task_id_t task_spawn_ex(const char path, const char argv[])
71	{	71	{
72	int phone_id;	72	int phone_id;
73	ipc_call_t answer;	73	ipc_call_t answer;
74	aid_t req;	74	aid_t req;
75	int rc;	75	int rc;
76		76
77	/* Spawn a program loader */	77	/* Spawn a program loader */
78	phone_id = task_spawn_loader();	78	phone_id = task_spawn_loader();
79	if (phone_id < 0) return 0;	79	if (phone_id < 0) return 0;
80		80
81	/*	81	/*
82	* Say hello so that the loader knows the incoming connection's	82	* Say hello so that the loader knows the incoming connection's
83	* phone hash.	83	* phone hash.
84	*/	84	*/
85	rc = async_req_0_0(phone_id, LOADER_HELLO);	85	rc = async_req_0_0(phone_id, LOADER_HELLO);
86	if (rc != EOK) return 0;	86	if (rc != EOK) return 0;
87		87
88	/* Send program pathname */	88	/* Send program pathname */
89	req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer);	89	req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer);
90	rc = ipc_data_write_start(phone_id, (void *)path, strlen(path));	90	rc = ipc_data_write_start(phone_id, (void *)path, strlen(path));
91	if (rc != EOK) {	91	if (rc != EOK) {
92	async_wait_for(req, NULL);	92	async_wait_for(req, NULL);
93	return 1;	93	return 1;
94	}	94	}
95		95
96	async_wait_for(req, &rc);	96	async_wait_for(req, &rc);
97	if (rc != EOK) return 0;	97	if (rc != EOK) return 0;
98		98
99	/* Request loader to start the program */	99	/* Request loader to start the program */
100	rc = async_req_0_0(phone_id, LOADER_RUN);	100	rc = async_req_0_0(phone_id, LOADER_RUN);
101	if (rc != EOK) return 0;	101	if (rc != EOK) return 0;
102		102
103	ipc_hangup(phone_id);	103	ipc_hangup(phone_id);
104		104
105	return 1;	105	return 1;
106	}	106	}
-		107
-		108	int task_spawn(void *image, size_t size)
-		109	{
-		110	return __SYSCALL2(SYS_TASK_SPAWN, (sysarg_t) image, (sysarg_t) size);
-		111	}
107		112
108	/** @}	113	/** @}
109	*/	114	*/
110		115

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(root)/branches/dynload/uspace/lib/libc/generic/task.c – Rev 3148 → 3150