Rev 3492 | 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 | * |
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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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| 1653 | cejka | 28 | */ |
| 29 | |||
| 1866 | jermar | 30 | /** @addtogroup libc |
| 1653 | cejka | 31 | * @{ |
| 32 | */ |
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| 33 | /** @file |
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| 1175 | jermar | 34 | */ |
| 35 | |||
| 36 | #include <task.h> |
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| 37 | #include <libc.h> |
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| 3222 | svoboda | 38 | #include <stdlib.h> |
| 39 | #include <errno.h> |
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| 3492 | rimsky | 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; |
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| 45 | |||
| 1228 | jermar | 46 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
| 1175 | jermar | 47 | |
| 48 | return task_id; |
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| 49 | } |
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| 1653 | cejka | 50 | |
| 3492 | rimsky | 51 | /** Create a new task by running an executable from the filesystem. |
| 3222 | svoboda | 52 | * |
| 3492 | rimsky | 53 | * This is really just a convenience wrapper over the more complicated |
| 54 | * loader API. |
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| 55 | * |
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| 3222 | svoboda | 56 | * @param path pathname of the binary to execute |
| 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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| 3492 | rimsky | 60 | task_id_t task_spawn(const char *path, char *const argv[]) |
| 3222 | svoboda | 61 | { |
| 3492 | rimsky | 62 | loader_t *ldr; |
| 63 | task_id_t task_id; |
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| 3222 | svoboda | 64 | int rc; |
| 65 | |||
| 3492 | rimsky | 66 | /* Spawn a program loader. */ |
| 3593 | rimsky | 67 | ldr = loader_spawn(path); |
| 3492 | rimsky | 68 | if (ldr == NULL) |
| 3306 | jermar | 69 | return 0; |
| 70 | |||
| 3492 | rimsky | 71 | /* Get task ID. */ |
| 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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| 3222 | svoboda | 75 | |
| 3492 | rimsky | 76 | /* Send program pathname. */ |
| 77 | rc = loader_set_pathname(ldr, path); |
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| 3306 | jermar | 78 | if (rc != EOK) |
| 3492 | rimsky | 79 | goto error; |
| 3222 | svoboda | 80 | |
| 3492 | rimsky | 81 | /* Send arguments. */ |
| 82 | rc = loader_set_args(ldr, argv); |
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| 83 | if (rc != EOK) |
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| 3306 | jermar | 84 | goto error; |
| 3222 | svoboda | 85 | |
| 3492 | rimsky | 86 | /* Load the program. */ |
| 87 | rc = loader_load_program(ldr); |
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| 3306 | jermar | 88 | if (rc != EOK) |
| 89 | goto error; |
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| 3222 | svoboda | 90 | |
| 3492 | rimsky | 91 | /* Run it. */ |
| 92 | /* Load the program. */ |
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| 93 | rc = loader_run(ldr); |
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| 3306 | jermar | 94 | if (rc != EOK) |
| 95 | goto error; |
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| 3222 | svoboda | 96 | |
| 97 | /* Success */ |
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| 98 | |||
| 3492 | rimsky | 99 | free(ldr); |
| 100 | return task_id; |
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| 101 | |||
| 3222 | svoboda | 102 | /* Error exit */ |
| 103 | error: |
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| 3492 | rimsky | 104 | loader_abort(ldr); |
| 105 | free(ldr); |
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| 106 | |||
| 3222 | svoboda | 107 | return 0; |
| 108 | } |
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| 109 | |||
| 1866 | jermar | 110 | /** @} |
| 1653 | cejka | 111 | */ |