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>
#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) && (fnode(stdin, &stdin_node) == EOK))
        files[0] = &stdin_node;
    else
        files[0] = NULL;
   
    if ((stdout != NULL) && (fnode(stdout, &stdout_node) == EOK))
        files[1] = &stdout_node;
    else
        files[1] = NULL;
   
    if ((stderr != NULL) && (fnode(stderr, &stderr_node) == EOK))
        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, task_exit_t *texit, int *retval)
{
    ipcarg_t te, rv;
    int rc;
 
    rc = (int) async_req_2_2(PHONE_NS, NS_TASK_WAIT, LOWER32(id),
        UPPER32(id), &te, &rv);
    *texit = te;
    *retval = rv;
 
    return rc;
}
 
int task_retval(int val)
{
    return (int) async_req_1_0(PHONE_NS, NS_RETVAL, val);
}
 
/** @}
 */
 

Rev 4581	Rev 4718
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	fdi_node_t *files[4];	103	fdi_node_t *files[4];
104	fdi_node_t stdin_node;	104	fdi_node_t stdin_node;
105	fdi_node_t stdout_node;	105	fdi_node_t stdout_node;
106	fdi_node_t stderr_node;	106	fdi_node_t stderr_node;
107		107
108	if ((stdin != NULL) && (fnode(stdin, &stdin_node) == EOK))	108	if ((stdin != NULL) && (fnode(stdin, &stdin_node) == EOK))
109	files[0] = &stdin_node;	109	files[0] = &stdin_node;
110	else	110	else
111	files[0] = NULL;	111	files[0] = NULL;
112		112
113	if ((stdout != NULL) && (fnode(stdout, &stdout_node) == EOK))	113	if ((stdout != NULL) && (fnode(stdout, &stdout_node) == EOK))
114	files[1] = &stdout_node;	114	files[1] = &stdout_node;
115	else	115	else
116	files[1] = NULL;	116	files[1] = NULL;
117		117
118	if ((stderr != NULL) && (fnode(stderr, &stderr_node) == EOK))	118	if ((stderr != NULL) && (fnode(stderr, &stderr_node) == EOK))
119	files[2] = &stderr_node;	119	files[2] = &stderr_node;
120	else	120	else
121	files[2] = NULL;	121	files[2] = NULL;
122		122
123	files[3] = NULL;	123	files[3] = NULL;
124		124
125	rc = loader_set_files(ldr, files);	125	rc = loader_set_files(ldr, files);
126	if (rc != EOK)	126	if (rc != EOK)
127	goto error;	127	goto error;
128		128
129	/* Load the program. */	129	/* Load the program. */
130	rc = loader_load_program(ldr);	130	rc = loader_load_program(ldr);
131	if (rc != EOK)	131	if (rc != EOK)
132	goto error;	132	goto error;
133		133
134	/* Run it. */	134	/* Run it. */
135	rc = loader_run(ldr);	135	rc = loader_run(ldr);
136	if (rc != EOK)	136	if (rc != EOK)
137	goto error;	137	goto error;
138		138
139	/* Success */	139	/* Success */
140	free(ldr);	140	free(ldr);
141	return task_id;	141	return task_id;
142		142
143	error:	143	error:
144	/* Error exit */	144	/* Error exit */
145	loader_abort(ldr);	145	loader_abort(ldr);
146	free(ldr);	146	free(ldr);
147		147
148	return 0;	148	return 0;
149	}	149	}
150		150
151	int task_wait(task_id_t id)	151	int task_wait(task_id_t id, task_exit_t texit, int retval)
152	{	152	{
-		153	ipcarg_t te, rv;
-		154	int rc;
-		155
153	return (int) async_req_2_0(PHONE_NS, NS_TASK_WAIT, LOWER32(id), UPPER32(id));	156	rc = (int) async_req_2_2(PHONE_NS, NS_TASK_WAIT, LOWER32(id),
-		157	UPPER32(id), &te, &rv);
-		158	*texit = te;
-		159	*retval = rv;
-		160
-		161	return rc;
-		162	}
-		163
-		164	int task_retval(int val)
-		165	{
-		166	return (int) async_req_1_0(PHONE_NS, NS_RETVAL, val);
154	}	167	}
155		168
156	/** @}	169	/** @}
157	*/	170	*/
158		171

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(root)/branches/network/uspace/lib/libc/generic/task.c – Rev 4581 → 4718