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| 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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| 3469 | svoboda | 40 | #include <loader/loader.h> |
| 3983 | svoboda | 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; |
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| 46 | |||
| 1228 | jermar | 47 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
| 1175 | jermar | 48 | |
| 49 | return task_id; |
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| 50 | } |
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| 1653 | cejka | 51 | |
| 3983 | svoboda | 52 | /** Set the task name. |
| 53 | * |
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| 54 | * @param name The new name, typically the command used to execute the |
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| 55 | * program. |
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| 56 | * @return Zero on success or negative error code. |
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| 57 | */ |
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| 58 | int task_set_name(const char *name) |
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| 59 | { |
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| 60 | return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, strlen(name)); |
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| 61 | } |
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| 62 | |||
| 3469 | svoboda | 63 | /** Create a new task by running an executable from the filesystem. |
| 3222 | svoboda | 64 | * |
| 3469 | svoboda | 65 | * This is really just a convenience wrapper over the more complicated |
| 66 | * loader API. |
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| 67 | * |
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| 3222 | svoboda | 68 | * @param path pathname of the binary to execute |
| 69 | * @param argv command-line arguments |
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| 70 | * @return ID of the newly created task or zero on error. |
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| 71 | */ |
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| 3462 | svoboda | 72 | task_id_t task_spawn(const char *path, char *const argv[]) |
| 3222 | svoboda | 73 | { |
| 3469 | svoboda | 74 | loader_t *ldr; |
| 75 | task_id_t task_id; |
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| 3222 | svoboda | 76 | int rc; |
| 77 | |||
| 3896 | svoboda | 78 | /* Connect to a program loader. */ |
| 79 | ldr = loader_connect(); |
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| 3469 | svoboda | 80 | if (ldr == NULL) |
| 3306 | jermar | 81 | return 0; |
| 3222 | svoboda | 82 | |
| 3469 | svoboda | 83 | /* Get task ID. */ |
| 84 | rc = loader_get_task_id(ldr, &task_id); |
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| 3306 | jermar | 85 | if (rc != EOK) |
| 3447 | svoboda | 86 | goto error; |
| 87 | |||
| 3470 | svoboda | 88 | /* Send program pathname. */ |
| 3469 | svoboda | 89 | rc = loader_set_pathname(ldr, path); |
| 90 | if (rc != EOK) |
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| 3306 | jermar | 91 | goto error; |
| 3222 | svoboda | 92 | |
| 3470 | svoboda | 93 | /* Send arguments. */ |
| 3469 | svoboda | 94 | rc = loader_set_args(ldr, argv); |
| 3306 | jermar | 95 | if (rc != EOK) |
| 96 | goto error; |
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| 3222 | svoboda | 97 | |
| 3470 | svoboda | 98 | /* Load the program. */ |
| 99 | rc = loader_load_program(ldr); |
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| 3306 | jermar | 100 | if (rc != EOK) |
| 101 | goto error; |
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| 3222 | svoboda | 102 | |
| 3470 | svoboda | 103 | /* Run it. */ |
| 104 | rc = loader_run(ldr); |
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| 105 | if (rc != EOK) |
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| 106 | goto error; |
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| 107 | |||
| 3222 | svoboda | 108 | /* Success */ |
| 3470 | svoboda | 109 | |
| 110 | free(ldr); |
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| 3447 | svoboda | 111 | return task_id; |
| 3222 | svoboda | 112 | |
| 113 | /* Error exit */ |
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| 114 | error: |
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| 3469 | svoboda | 115 | loader_abort(ldr); |
| 3470 | svoboda | 116 | free(ldr); |
| 117 | |||
| 3222 | svoboda | 118 | return 0; |
| 119 | } |
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| 120 | |||
| 1866 | jermar | 121 | /** @} |
| 1653 | cejka | 122 | */ |