WebSVN – HelenOS – Diff – /trunk/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>
#include <ipc/ns.h>
#include <macros.h>
#include <async.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 args[])
{
    /* Connect to a program loader. */
    loader_t *ldr = loader_connect();
    if (ldr == NULL)
        return 0;
   
    /* Get task ID. */
    task_id_t task_id;
    int 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, args);
    if (rc != EOK)
        goto error;
   
   
    /* Send default files */
    fdi_node_t *files[4];
    fdi_node_t stdin_node;
    fdi_node_t stdout_node;
    fdi_node_t stderr_node;
   
    if ((stdin != NULL) && (stdin != &stdin_null)) {
        fnode(stdin, &stdin_node);
        files[0] = &stdin_node;
    } else
        files[0] = NULL;
   
    if ((stdout != NULL) && (stdout != &stdout_klog)) {
        fnode(stdout, &stdout_node);
        files[1] = &stdout_node;
    } else
        files[1] = NULL;
   
    if ((stderr != NULL) && (stderr != &stdout_klog)) {
        fnode(stderr, &stderr_node);
        files[2] = &stderr_node;
    } else
        files[2] = NULL;
   
    files[3] = NULL;
   
    rc = loader_set_files(ldr, files);
    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:
    /* Error exit */
    loader_abort(ldr);
    free(ldr);
   
    return 0;
}
 
int task_wait(task_id_t id)
{
    return (int) async_req_2_0(PHONE_NS, NS_TASK_WAIT, LOWER32(id), UPPER32(id));
}
 
/** @}
 */
 

Rev 4491	Rev 4492
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	#include <ipc/ns.h>	42	#include <ipc/ns.h>
43	#include <macros.h>	43	#include <macros.h>
44	#include <async.h>	44	#include <async.h>
45		45
46	task_id_t task_get_id(void)	46	task_id_t task_get_id(void)
47	{	47	{
48	task_id_t task_id;	48	task_id_t task_id;
49	(void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);	49	(void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
50		50
51	return task_id;	51	return task_id;
52	}	52	}
53		53
54	/** Set the task name.	54	/** Set the task name.
55	*	55	*
56	* @param name The new name, typically the command used to execute the	56	* @param name The new name, typically the command used to execute the
57	* program.	57	* program.
58	*	58	*
59	* @return Zero on success or negative error code.	59	* @return Zero on success or negative error code.
60	*	60	*
61	*/	61	*/
62	int task_set_name(const char *name)	62	int task_set_name(const char *name)
63	{	63	{
64	return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, str_size(name));	64	return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, str_size(name));
65	}	65	}
66		66
67	/** Create a new task by running an executable from the filesystem.	67	/** Create a new task by running an executable from the filesystem.
68	*	68	*
69	* This is really just a convenience wrapper over the more complicated	69	* This is really just a convenience wrapper over the more complicated
70	* loader API.	70	* loader API.
71	*	71	*
72	* @param path pathname of the binary to execute	72	* @param path pathname of the binary to execute
73	* @param argv command-line arguments	73	* @param argv command-line arguments
74	*	74	*
75	* @return ID of the newly created task or zero on error.	75	* @return ID of the newly created task or zero on error.
76	*	76	*
77	*/	77	*/
78	task_id_t task_spawn(const char path, char const args[])	78	task_id_t task_spawn(const char path, char const args[])
79	{	79	{
80	/* Connect to a program loader. */	80	/* Connect to a program loader. */
81	loader_t *ldr = loader_connect();	81	loader_t *ldr = loader_connect();
82	if (ldr == NULL)	82	if (ldr == NULL)
83	return 0;	83	return 0;
84		84
85	/* Get task ID. */	85	/* Get task ID. */
86	task_id_t task_id;	86	task_id_t task_id;
87	int rc = loader_get_task_id(ldr, &task_id);	87	int rc = loader_get_task_id(ldr, &task_id);
88	if (rc != EOK)	88	if (rc != EOK)
89	goto error;	89	goto error;
90		90
91	/* Send program pathname. */	91	/* Send program pathname. */
92	rc = loader_set_pathname(ldr, path);	92	rc = loader_set_pathname(ldr, path);
93	if (rc != EOK)	93	if (rc != EOK)
94	goto error;	94	goto error;
95		95
96	/* Send arguments. */	96	/* Send arguments. */
97	rc = loader_set_args(ldr, args);	97	rc = loader_set_args(ldr, args);
98	if (rc != EOK)	98	if (rc != EOK)
99	goto error;	99	goto error;
100		100
101		101
102	/* Send default files */	102	/* Send default files */
103	inode_t *files[4];	103	fdi_node_t *files[4];
104	inode_t stdin_node;	104	fdi_node_t stdin_node;
105	inode_t stdout_node;	105	fdi_node_t stdout_node;
106	inode_t stderr_node;	106	fdi_node_t stderr_node;
107		107
108	if ((stdin != NULL) && (stdin != &stdin_null)) {	108	if ((stdin != NULL) && (stdin != &stdin_null)) {
109	fnode(stdin, &stdin_node);	109	fnode(stdin, &stdin_node);
110	files[0] = &stdin_node;	110	files[0] = &stdin_node;
111	} else	111	} else
112	files[0] = NULL;	112	files[0] = NULL;
113		113
114	if ((stdout != NULL) && (stdout != &stdout_klog)) {	114	if ((stdout != NULL) && (stdout != &stdout_klog)) {
115	fnode(stdout, &stdout_node);	115	fnode(stdout, &stdout_node);
116	files[1] = &stdout_node;	116	files[1] = &stdout_node;
117	} else	117	} else
118	files[1] = NULL;	118	files[1] = NULL;
119		119
120	if ((stderr != NULL) && (stderr != &stdout_klog)) {	120	if ((stderr != NULL) && (stderr != &stdout_klog)) {
121	fnode(stderr, &stderr_node);	121	fnode(stderr, &stderr_node);
122	files[2] = &stderr_node;	122	files[2] = &stderr_node;
123	} else	123	} else
124	files[2] = NULL;	124	files[2] = NULL;
125		125
126	files[3] = NULL;	126	files[3] = NULL;
127		127
128	rc = loader_set_files(ldr, files);	128	rc = loader_set_files(ldr, files);
129	if (rc != EOK)	129	if (rc != EOK)
130	goto error;	130	goto error;
131		131
132	/* Load the program. */	132	/* Load the program. */
133	rc = loader_load_program(ldr);	133	rc = loader_load_program(ldr);
134	if (rc != EOK)	134	if (rc != EOK)
135	goto error;	135	goto error;
136		136
137	/* Run it. */	137	/* Run it. */
138	rc = loader_run(ldr);	138	rc = loader_run(ldr);
139	if (rc != EOK)	139	if (rc != EOK)
140	goto error;	140	goto error;
141		141
142	/* Success */	142	/* Success */
143	free(ldr);	143	free(ldr);
144	return task_id;	144	return task_id;
145		145
146	error:	146	error:
147	/* Error exit */	147	/* Error exit */
148	loader_abort(ldr);	148	loader_abort(ldr);
149	free(ldr);	149	free(ldr);
150		150
151	return 0;	151	return 0;
152	}	152	}
153		153
154	int task_wait(task_id_t id)	154	int task_wait(task_id_t id)
155	{	155	{
156	return (int) async_req_2_0(PHONE_NS, NS_TASK_WAIT, LOWER32(id), UPPER32(id));	156	return (int) async_req_2_0(PHONE_NS, NS_TASK_WAIT, LOWER32(id), UPPER32(id));
157	}	157	}
158		158
159	/** @}	159	/** @}
160	*/	160	*/
161		161

Subversion Repositories HelenOS

(root)/trunk/uspace/lib/libc/generic/task.c @ 3896 – Rev 4491 → 4492