Subversion Repositories HelenOS

Rev

Rev 3386 | Rev 4581 | 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
3222 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>
37
#include <libc.h>
3222 svoboda 38
#include <stdlib.h>
39
#include <errno.h>
4153 mejdrech 40
#include <loader/loader.h>
41
#include <string.h>
1175 jermar 42
 
1228 jermar 43
task_id_t task_get_id(void)
1175 jermar 44
{
45
    task_id_t task_id;
46
 
1228 jermar 47
    (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
1175 jermar 48
 
49
    return task_id;
50
}
1653 cejka 51
 
4153 mejdrech 52
/** Set the task name.
53
 *
54
 * @param name  The new name, typically the command used to execute the
55
 *      program.
56
 * @return  Zero on success or negative error code.
57
 */
58
int task_set_name(const char *name)
3073 decky 59
{
4153 mejdrech 60
    return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, strlen(name));
3073 decky 61
}
62
 
4153 mejdrech 63
/** Create a new task by running an executable from the filesystem.
3222 svoboda 64
 *
4153 mejdrech 65
 * This is really just a convenience wrapper over the more complicated
66
 * loader API.
67
 *
3222 svoboda 68
 * @param path  pathname of the binary to execute
69
 * @param argv  command-line arguments
70
 * @return  ID of the newly created task or zero on error.
71
 */
4153 mejdrech 72
task_id_t task_spawn(const char *path, char *const argv[])
3222 svoboda 73
{
4153 mejdrech 74
    loader_t *ldr;
75
    task_id_t task_id;
3222 svoboda 76
    int rc;
77
 
4153 mejdrech 78
    /* Connect to a program loader. */
79
    ldr = loader_connect();
80
    if (ldr == NULL)
3306 jermar 81
        return 0;
82
 
4153 mejdrech 83
    /* Get task ID. */
84
    rc = loader_get_task_id(ldr, &task_id);
85
    if (rc != EOK)
86
        goto error;
3222 svoboda 87
 
4153 mejdrech 88
    /* Send program pathname. */
89
    rc = loader_set_pathname(ldr, path);
3306 jermar 90
    if (rc != EOK)
4153 mejdrech 91
        goto error;
3222 svoboda 92
 
4153 mejdrech 93
    /* Send arguments. */
94
    rc = loader_set_args(ldr, argv);
95
    if (rc != EOK)
3306 jermar 96
        goto error;
3222 svoboda 97
 
4153 mejdrech 98
    /* Load the program. */
99
    rc = loader_load_program(ldr);
3306 jermar 100
    if (rc != EOK)
101
        goto error;
3222 svoboda 102
 
4153 mejdrech 103
    /* Run it. */
104
    rc = loader_run(ldr);
3306 jermar 105
    if (rc != EOK)
106
        goto error;
3222 svoboda 107
 
108
    /* Success */
109
 
4153 mejdrech 110
    free(ldr);
111
    return task_id;
112
 
3222 svoboda 113
    /* Error exit */
114
error:
4153 mejdrech 115
    loader_abort(ldr);
116
    free(ldr);
117
 
3222 svoboda 118
    return 0;
119
}
120
 
1866 jermar 121
/** @}
1653 cejka 122
 */