Subversion Repositories HelenOS

Rev

Rev 3569 | Rev 4344 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1175 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2006 Jakub Jermar
3148 svoboda 3
 * Copyright (c) 2008 Jiri Svoboda
1175 jermar 4
 * All rights reserved.
5
 *
6
 * Redistribution and use in source and binary forms, with or without
7
 * modification, are permitted provided that the following conditions
8
 * are met:
9
 *
10
 * - Redistributions of source code must retain the above copyright
11
 *   notice, this list of conditions and the following disclaimer.
12
 * - Redistributions in binary form must reproduce the above copyright
13
 *   notice, this list of conditions and the following disclaimer in the
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
16
 *   derived from this software without specific prior written permission.
17
 *
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
20
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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
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
27
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1653 cejka 28
 */
29
 
1866 jermar 30
/** @addtogroup libc
1653 cejka 31
 * @{
32
 */
33
/** @file
1175 jermar 34
 */
35
 
36
#include <task.h>
3102 svoboda 37
#include <libc.h>
3174 svoboda 38
#include <stdlib.h>
3004 svoboda 39
#include <errno.h>
3474 svoboda 40
#include <loader/loader.h>
1175 jermar 41
 
1228 jermar 42
task_id_t task_get_id(void)
1175 jermar 43
{
44
    task_id_t task_id;
45
 
1228 jermar 46
    (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
1175 jermar 47
 
48
    return task_id;
49
}
1653 cejka 50
 
3474 svoboda 51
/** Create a new task by running an executable from the filesystem.
3148 svoboda 52
 *
3474 svoboda 53
 * This is really just a convenience wrapper over the more complicated
54
 * loader API.
55
 *
3148 svoboda 56
 * @param path  pathname of the binary to execute
57
 * @param argv  command-line arguments
58
 * @return  ID of the newly created task or zero on error.
59
 */
3474 svoboda 60
task_id_t task_spawn(const char *path, char *const argv[])
3004 svoboda 61
{
3474 svoboda 62
    loader_t *ldr;
63
    task_id_t task_id;
3004 svoboda 64
    int rc;
3148 svoboda 65
 
4343 svoboda 66
    /* Connect to a program loader. */
67
    ldr = loader_connect();
3474 svoboda 68
    if (ldr == NULL)
3403 svoboda 69
        return 0;
70
 
3474 svoboda 71
    /* Get task ID. */
72
    rc = loader_get_task_id(ldr, &task_id);
3403 svoboda 73
    if (rc != EOK)
3448 svoboda 74
        goto error;
75
 
3474 svoboda 76
    /* Send program pathname. */
77
    rc = loader_set_pathname(ldr, path);
78
    if (rc != EOK)
3448 svoboda 79
        goto error;
80
 
3474 svoboda 81
    /* Send arguments. */
82
    rc = loader_set_args(ldr, argv);
83
    if (rc != EOK)
3403 svoboda 84
        goto error;
3004 svoboda 85
 
3474 svoboda 86
    /* Load the program. */
87
    rc = loader_load_program(ldr);
3403 svoboda 88
    if (rc != EOK)
89
        goto error;
3174 svoboda 90
 
3474 svoboda 91
    /* Run it. */
92
    rc = loader_run(ldr);
3403 svoboda 93
    if (rc != EOK)
94
        goto error;
3004 svoboda 95
 
3174 svoboda 96
    /* Success */
3474 svoboda 97
 
98
    free(ldr);
3448 svoboda 99
    return task_id;
3148 svoboda 100
 
3174 svoboda 101
    /* Error exit */
102
error:
3474 svoboda 103
    loader_abort(ldr);
104
    free(ldr);
105
 
3174 svoboda 106
    return 0;
3004 svoboda 107
}
108
 
1866 jermar 109
/** @}
1653 cejka 110
 */