WebSVN – HelenOS – Diff – /branches/sparc/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 <libc.h>
#include <stdlib.h>
#include <errno.h>
#include <loader/loader.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;
}
 
/** Create a new task by running an executable from the filesystem.
 *
 * This is really just a convenience wrapper over the more complicated
 * loader API.
 *
 * @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(const char *path, char *const argv[])
{
    loader_t *ldr;
    task_id_t task_id;
    int rc;
 
    /* Spawn a program loader. */  
    ldr = loader_spawn(path);
    if (ldr == NULL)
        return 0;
 
    /* Get task ID. */
    rc = loader_get_task_id(ldr, &task_id);
    if (rc != EOK)
        goto error;
 
    /* Send program pathname. */
    rc = loader_set_pathname(ldr, path);
    if (rc != EOK)
        goto error;
 
    /* Send arguments. */
    rc = loader_set_args(ldr, argv);
    if (rc != EOK)
        goto error;
 
    /* Load the program. */
    rc = loader_load_program(ldr);
    if (rc != EOK)
        goto error;
 
    /* Run it. */
    /* Load the program. */
    rc = loader_run(ldr);
    if (rc != EOK)
        goto error;
 
    /* Success */
 
    free(ldr);
    return task_id;
 
    /* Error exit */
error:
    loader_abort(ldr);
    free(ldr);
 
    return 0;
}
 
/** @}
 */
 

Rev 3492	Rev 3593
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 <libc.h>	37	#include <libc.h>
38	#include <stdlib.h>	38	#include <stdlib.h>
39	#include <errno.h>	39	#include <errno.h>
40	#include <loader/loader.h>	40	#include <loader/loader.h>
41		41
42	task_id_t task_get_id(void)	42	task_id_t task_get_id(void)
43	{	43	{
44	task_id_t task_id;	44	task_id_t task_id;
45		45
46	(void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);	46	(void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
47		47
48	return task_id;	48	return task_id;
49	}	49	}
50		50
51	/** Create a new task by running an executable from the filesystem.	51	/** Create a new task by running an executable from the filesystem.
52	*	52	*
53	* This is really just a convenience wrapper over the more complicated	53	* This is really just a convenience wrapper over the more complicated
54	* loader API.	54	* loader API.
55	*	55	*
56	* @param path pathname of the binary to execute	56	* @param path pathname of the binary to execute
57	* @param argv command-line arguments	57	* @param argv command-line arguments
58	* @return ID of the newly created task or zero on error.	58	* @return ID of the newly created task or zero on error.
59	*/	59	*/
60	task_id_t task_spawn(const char path, char const argv[])	60	task_id_t task_spawn(const char path, char const argv[])
61	{	61	{
62	loader_t *ldr;	62	loader_t *ldr;
63	task_id_t task_id;	63	task_id_t task_id;
64	int rc;	64	int rc;
65		65
66	/* Spawn a program loader. */	66	/* Spawn a program loader. */
67	ldr = loader_spawn();	67	ldr = loader_spawn(path);
68	if (ldr == NULL)	68	if (ldr == NULL)
69	return 0;	69	return 0;
70		70
71	/* Get task ID. */	71	/* Get task ID. */
72	rc = loader_get_task_id(ldr, &task_id);	72	rc = loader_get_task_id(ldr, &task_id);
73	if (rc != EOK)	73	if (rc != EOK)
74	goto error;	74	goto error;
75		75
76	/* Send program pathname. */	76	/* Send program pathname. */
77	rc = loader_set_pathname(ldr, path);	77	rc = loader_set_pathname(ldr, path);
78	if (rc != EOK)	78	if (rc != EOK)
79	goto error;	79	goto error;
80		80
81	/* Send arguments. */	81	/* Send arguments. */
82	rc = loader_set_args(ldr, argv);	82	rc = loader_set_args(ldr, argv);
83	if (rc != EOK)	83	if (rc != EOK)
84	goto error;	84	goto error;
85		85
86	/* Load the program. */	86	/* Load the program. */
87	rc = loader_load_program(ldr);	87	rc = loader_load_program(ldr);
88	if (rc != EOK)	88	if (rc != EOK)
89	goto error;	89	goto error;
90		90
91	/* Run it. */	91	/* Run it. */
92	/* Load the program. */	92	/* Load the program. */
93	rc = loader_run(ldr);	93	rc = loader_run(ldr);
94	if (rc != EOK)	94	if (rc != EOK)
95	goto error;	95	goto error;
96		96
97	/* Success */	97	/* Success */
98		98
99	free(ldr);	99	free(ldr);
100	return task_id;	100	return task_id;
101		101
102	/* Error exit */	102	/* Error exit */
103	error:	103	error:
104	loader_abort(ldr);	104	loader_abort(ldr);
105	free(ldr);	105	free(ldr);
106		106
107	return 0;	107	return 0;
108	}	108	}
109		109
110	/** @}	110	/** @}
111	*/	111	*/
112		112

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(root)/branches/sparc/uspace/lib/libc/generic/task.c – Rev 3492 → 3593