WebSVN – HelenOS – Diff – /branches/network/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>
#include <string.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;
}
 
/** Set the task name.
 *
 * @param name  The new name, typically the command used to execute the
 *      program.
 * @return  Zero on success or negative error code.
 */
int task_set_name(const char *name)
{
    return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, str_size(name));
}
 
/** 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;
 
    /* Connect to a program loader. */
    ldr = loader_connect();
    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. */
    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 4153	Rev 4263
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	#include <string.h>	41	#include <string.h>
42		42
43	task_id_t task_get_id(void)	43	task_id_t task_get_id(void)
44	{	44	{
45	task_id_t task_id;	45	task_id_t task_id;
46		46
47	(void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);	47	(void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
48		48
49	return task_id;	49	return task_id;
50	}	50	}
51		51
52	/** Set the task name.	52	/** Set the task name.
53	*	53	*
54	* @param name The new name, typically the command used to execute the	54	* @param name The new name, typically the command used to execute the
55	* program.	55	* program.
56	* @return Zero on success or negative error code.	56	* @return Zero on success or negative error code.
57	*/	57	*/
58	int task_set_name(const char *name)	58	int task_set_name(const char *name)
59	{	59	{
60	return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, strlen(name));	60	return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, str_size(name));
61	}	61	}
62		62
63	/** Create a new task by running an executable from the filesystem.	63	/** Create a new task by running an executable from the filesystem.
64	*	64	*
65	* This is really just a convenience wrapper over the more complicated	65	* This is really just a convenience wrapper over the more complicated
66	* loader API.	66	* loader API.
67	*	67	*
68	* @param path pathname of the binary to execute	68	* @param path pathname of the binary to execute
69	* @param argv command-line arguments	69	* @param argv command-line arguments
70	* @return ID of the newly created task or zero on error.	70	* @return ID of the newly created task or zero on error.
71	*/	71	*/
72	task_id_t task_spawn(const char path, char const argv[])	72	task_id_t task_spawn(const char path, char const argv[])
73	{	73	{
74	loader_t *ldr;	74	loader_t *ldr;
75	task_id_t task_id;	75	task_id_t task_id;
76	int rc;	76	int rc;
77		77
78	/* Connect to a program loader. */	78	/* Connect to a program loader. */
79	ldr = loader_connect();	79	ldr = loader_connect();
80	if (ldr == NULL)	80	if (ldr == NULL)
81	return 0;	81	return 0;
82		82
83	/* Get task ID. */	83	/* Get task ID. */
84	rc = loader_get_task_id(ldr, &task_id);	84	rc = loader_get_task_id(ldr, &task_id);
85	if (rc != EOK)	85	if (rc != EOK)
86	goto error;	86	goto error;
87		87
88	/* Send program pathname. */	88	/* Send program pathname. */
89	rc = loader_set_pathname(ldr, path);	89	rc = loader_set_pathname(ldr, path);
90	if (rc != EOK)	90	if (rc != EOK)
91	goto error;	91	goto error;
92		92
93	/* Send arguments. */	93	/* Send arguments. */
94	rc = loader_set_args(ldr, argv);	94	rc = loader_set_args(ldr, argv);
95	if (rc != EOK)	95	if (rc != EOK)
96	goto error;	96	goto error;
97		97
98	/* Load the program. */	98	/* Load the program. */
99	rc = loader_load_program(ldr);	99	rc = loader_load_program(ldr);
100	if (rc != EOK)	100	if (rc != EOK)
101	goto error;	101	goto error;
102		102
103	/* Run it. */	103	/* Run it. */
104	rc = loader_run(ldr);	104	rc = loader_run(ldr);
105	if (rc != EOK)	105	if (rc != EOK)
106	goto error;	106	goto error;
107		107
108	/* Success */	108	/* Success */
109		109
110	free(ldr);	110	free(ldr);
111	return task_id;	111	return task_id;
112		112
113	/* Error exit */	113	/* Error exit */
114	error:	114	error:
115	loader_abort(ldr);	115	loader_abort(ldr);
116	free(ldr);	116	free(ldr);
117		117
118	return 0;	118	return 0;
119	}	119	}
120		120
121	/** @}	121	/** @}
122	*/	122	*/
123		123

Subversion Repositories HelenOS

(root)/branches/network/uspace/lib/libc/generic/task.c – Rev 4153 → 4263