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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.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1653 cejka 28 
 */
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1866 jermar 30 
/** @addtogroup libc
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 * @{
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 */
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/** @file
4470 decky 34 
 */
1175 jermar 35 
 
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#include <task.h>
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#include <libc.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <loader/loader.h>
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#include <string.h>
4470 decky 42 
#include <ipc/ns.h>
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#include <macros.h>
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#include <async.h>
1175 jermar 45 
 
1228 jermar 46 
task_id_t task_get_id(void)
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{
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    task_id_t task_id;
1228 jermar 49 
    (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
4470 decky 50 
 
1175 jermar 51 
    return task_id;
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}
1653 cejka 53 
 
3983 svoboda 54 
/** Set the task name.
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 *
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 * @param name The new name, typically the command used to execute the
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 *             program.
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 *
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 * @return Zero on success or negative error code.
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 *
3983 svoboda 61 
 */
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int task_set_name(const char *name)
63 
{
4256 svoboda 64 
    return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, str_size(name));
3983 svoboda 65 
}
66 
 
3469 svoboda 67 
/** Create a new task by running an executable from the filesystem.
3222 svoboda 68 
 *
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 * This is really just a convenience wrapper over the more complicated
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 * loader API.
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 *
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 * @param path pathname of the binary to execute
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 * @param argv command-line arguments
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 *
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 * @return ID of the newly created task or zero on error.
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 *
3222 svoboda 77 
 */
4470 decky 78 
task_id_t task_spawn(const char *path, char *const args[])
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{
3896 svoboda 80 
    /* Connect to a program loader. */
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    loader_t *ldr = loader_connect();
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    if (ldr == NULL)
3306 jermar 83 
        return 0;
4470 decky 84 
 
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    /* Get task ID. */
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    task_id_t task_id;
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    int rc = loader_get_task_id(ldr, &task_id);
3306 jermar 88 
    if (rc != EOK)
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        goto error;
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    /* Send program pathname. */
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    rc = loader_set_pathname(ldr, path);
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    if (rc != EOK)
3306 jermar 94 
        goto error;
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    /* Send arguments. */
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    rc = loader_set_args(ldr, args);
3306 jermar 98 
    if (rc != EOK)
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        goto error;
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101 
 
102 
    /* Send default files */
4492 jermar 103 
    fdi_node_t *files[4];
104 
    fdi_node_t stdin_node;
105 
    fdi_node_t stdout_node;
106 
    fdi_node_t stderr_node;
4470 decky 107 
 
4508 decky 108 
    if ((stdin != NULL) && (fnode(stdin, &stdin_node) == EOK))
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        files[0] = &stdin_node;
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    else
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        files[0] = NULL;
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4508 decky 113 
    if ((stdout != NULL) && (fnode(stdout, &stdout_node) == EOK))
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        files[1] = &stdout_node;
4508 decky 115 
    else
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        files[1] = NULL;
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4508 decky 118 
    if ((stderr != NULL) && (fnode(stderr, &stderr_node) == EOK))
4470 decky 119 
        files[2] = &stderr_node;
4508 decky 120 
    else
4470 decky 121 
        files[2] = NULL;
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123 
    files[3] = NULL;
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125 
    rc = loader_set_files(ldr, files);
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    if (rc != EOK)
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        goto error;
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    /* Load the program. */
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    rc = loader_load_program(ldr);
3306 jermar 131 
    if (rc != EOK)
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        goto error;
4470 decky 133 
 
3470 svoboda 134 
    /* Run it. */
135 
    rc = loader_run(ldr);
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    if (rc != EOK)
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        goto error;
4470 decky 138 
 
3222 svoboda 139 
    /* Success */
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    free(ldr);
3447 svoboda 141 
    return task_id;
4470 decky 142 
 
143 
error:
3222 svoboda 144 
    /* Error exit */
3469 svoboda 145 
    loader_abort(ldr);
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    free(ldr);
4470 decky 147 
 
3222 svoboda 148 
    return 0;
149 
}
150 
 
4617 svoboda 151 
int task_wait(task_id_t id, int *retval)
4470 decky 152 
{
4617 svoboda 153 
    ipcarg_t rv;
154 
    int rc;
155 
 
156 
    rc = (int) async_req_2_1(PHONE_NS, NS_TASK_WAIT, LOWER32(id),
157 
        UPPER32(id), &rv);
158 
    *retval = rv;
159 
 
160 
    return rc;
4470 decky 161 
}
162 
 
4617 svoboda 163 
int task_retval(int val)
164 
{
4618 svoboda 165 
    return (int) async_req_1_0(PHONE_NS, NS_RETVAL, val);
4617 svoboda 166 
}
167 
 
1866 jermar 168 
/** @}
1653 cejka 169 
 */