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Rev 3022 Rev 4055
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/*
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/*
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 * Copyright (c) 2006 Jakub Jermar
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 * Copyright (c) 2006 Jakub Jermar
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 * Copyright (c) 2008 Jiri Svoboda
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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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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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 *
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 *
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 * - Redistributions of source code must retain the above copyright
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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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 *   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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 * - 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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 *   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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 *   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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 * - 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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 *   derived from this software without specific prior written permission.
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 *
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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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * 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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 * (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.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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/** @addtogroup libc
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/** @addtogroup libc
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 * @{
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 * @{
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 */
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 */
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/** @file
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/** @file
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 */
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 */
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#include <task.h>
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#include <task.h>
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#include <libc.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>
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task_id_t task_get_id(void)
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task_id_t task_get_id(void)
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{
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{
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    task_id_t task_id;
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    task_id_t task_id;
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    (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
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    (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
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    return task_id;
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    return task_id;
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}
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}
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/** 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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 * @return  Zero on success or negative error code.
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 */
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int task_set_name(const char *name)
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{
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    return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, strlen(name));
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}
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/** Create a new task by running an executable from the filesystem.
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 *
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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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 * @return  ID of the newly created task or zero on error.
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 */
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task_id_t task_spawn(const char *path, char *const argv[])
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{
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    loader_t *ldr;
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    task_id_t task_id;
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    int rc;
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    /* Connect to a program loader. */
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    ldr = loader_connect();
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    if (ldr == NULL)
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        return 0;
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    /* Get task ID. */
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    rc = loader_get_task_id(ldr, &task_id);
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    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)
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        goto error;
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    /* Send arguments. */
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    rc = loader_set_args(ldr, argv);
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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);
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    if (rc != EOK)
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        goto error;
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    /* Run it. */
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    rc = loader_run(ldr);
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    if (rc != EOK)
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        goto error;
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    /* Success */
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    free(ldr);
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    return task_id;
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    /* Error exit */
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error:
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    loader_abort(ldr);
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    free(ldr);
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    return 0;
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}
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/** @}
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/** @}
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 */
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 */
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