| 1 | /*
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| 2 | * Copyright (c) 2006 Jakub Jermar
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| 3 | * Copyright (c) 2008 Jiri Svoboda
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * Redistribution and use in source and binary forms, with or without
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| 7 | * modification, are permitted provided that the following conditions
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| 8 | * are met:
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| 9 | *
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| 10 | * - Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * - Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | * - The name of the author may not be used to endorse or promote products
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| 16 | * derived from this software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 28 | */
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| 29 |
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| 30 | /** @addtogroup libc
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| 31 | * @{
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| 32 | */
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| 33 | /** @file
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| 34 | */
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| 35 |
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| 36 | #include <task.h>
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| 37 | #include <libc.h>
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| 38 | #include <stdlib.h>
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| 39 | #include <errno.h>
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| 40 | #include <loader/loader.h>
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| 41 |
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| 42 | task_id_t task_get_id(void)
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| 43 | {
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| 44 | task_id_t task_id;
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| 45 |
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| 46 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id);
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| 47 |
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| 48 | return task_id;
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| 49 | }
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| 50 |
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| 51 | /** Create a new task by running an executable from the filesystem.
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| 52 | *
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| 53 | * This is really just a convenience wrapper over the more complicated
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| 54 | * loader API.
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| 55 | *
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| 56 | * @param path pathname of the binary to execute
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| 57 | * @param argv command-line arguments
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| 58 | * @return ID of the newly created task or zero on error.
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| 59 | */
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| 60 | task_id_t task_spawn(const char *path, char *const argv[])
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| 61 | {
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| 62 | loader_t *ldr;
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| 63 | task_id_t task_id;
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| 64 | int rc;
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| 65 |
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| 66 | /* Spawn a program loader. */
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| 67 | ldr = loader_spawn(path);
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| 68 | if (ldr == NULL)
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| 69 | return 0;
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| 70 |
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| 71 | /* Get task ID. */
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| 72 | rc = loader_get_task_id(ldr, &task_id);
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| 73 | if (rc != EOK)
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| 74 | goto error;
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| 75 |
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| 76 | /* Send program pathname. */
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| 77 | rc = loader_set_pathname(ldr, path);
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| 78 | if (rc != EOK)
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| 79 | goto error;
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| 80 |
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| 81 | /* Send arguments. */
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| 82 | rc = loader_set_args(ldr, argv);
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| 83 | if (rc != EOK)
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| 84 | goto error;
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| 85 |
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| 86 | /* Load the program. */
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| 87 | rc = loader_load_program(ldr);
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| 88 | if (rc != EOK)
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| 89 | goto error;
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| 90 |
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| 91 | /* Run it. */
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| 92 | /* Load the program. */
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| 93 | rc = loader_run(ldr);
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| 94 | if (rc != EOK)
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| 95 | goto error;
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| 96 |
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| 97 | /* Success */
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| 98 |
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| 99 | free(ldr);
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| 100 | return task_id;
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| 101 |
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| 102 | /* Error exit */
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| 103 | error:
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| 104 | loader_abort(ldr);
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| 105 | free(ldr);
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| 106 |
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| 107 | return 0;
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| 108 | }
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| 109 |
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| 110 | /** @}
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| 111 | */
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