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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Jakub Jermar |
2 | * Copyright (c) 2006 Jakub Jermar |
3 | * Copyright (c) 2008 Jiri Svoboda |
3 | * Copyright (c) 2008 Jiri Svoboda |
4 | * All rights reserved. |
4 | * All rights reserved. |
5 | * |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
8 | * are met: |
9 | * |
9 | * |
10 | * - Redistributions of source code must retain the above copyright |
10 | * - Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * - Redistributions in binary form must reproduce the above copyright |
12 | * - Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
14 | * documentation and/or other materials provided with the distribution. |
15 | * - The name of the author may not be used to endorse or promote products |
15 | * - The name of the author may not be used to endorse or promote products |
16 | * derived from this software without specific prior written permission. |
16 | * derived from this software without specific prior written permission. |
17 | * |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
28 | */ |
29 | 29 | ||
30 | /** @addtogroup libc |
30 | /** @addtogroup libc |
31 | * @{ |
31 | * @{ |
32 | */ |
32 | */ |
33 | /** @file |
33 | /** @file |
34 | */ |
34 | */ |
35 | 35 | ||
36 | #include <task.h> |
36 | #include <task.h> |
37 | #include <libc.h> |
37 | #include <libc.h> |
38 | #include <stdlib.h> |
38 | #include <stdlib.h> |
39 | #include <errno.h> |
39 | #include <errno.h> |
40 | #include <loader/loader.h> |
40 | #include <loader/loader.h> |
41 | #include <string.h> |
41 | #include <string.h> |
42 | 42 | ||
43 | task_id_t task_get_id(void) |
43 | task_id_t task_get_id(void) |
44 | { |
44 | { |
45 | task_id_t task_id; |
45 | task_id_t task_id; |
46 | 46 | ||
47 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
47 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
48 | 48 | ||
49 | return task_id; |
49 | return task_id; |
50 | } |
50 | } |
51 | 51 | ||
52 | /** Set the task name. |
52 | /** Set the task name. |
53 | * |
53 | * |
54 | * @param name The new name, typically the command used to execute the |
54 | * @param name The new name, typically the command used to execute the |
55 | * program. |
55 | * program. |
56 | * @return Zero on success or negative error code. |
56 | * @return Zero on success or negative error code. |
57 | */ |
57 | */ |
58 | int task_set_name(const char *name) |
58 | int task_set_name(const char *name) |
59 | { |
59 | { |
60 | return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, strlen(name)); |
60 | return __SYSCALL2(SYS_TASK_SET_NAME, (sysarg_t) name, str_size(name)); |
61 | } |
61 | } |
62 | 62 | ||
63 | /** Create a new task by running an executable from the filesystem. |
63 | /** Create a new task by running an executable from the filesystem. |
64 | * |
64 | * |
65 | * This is really just a convenience wrapper over the more complicated |
65 | * This is really just a convenience wrapper over the more complicated |
66 | * loader API. |
66 | * loader API. |
67 | * |
67 | * |
68 | * @param path pathname of the binary to execute |
68 | * @param path pathname of the binary to execute |
69 | * @param argv command-line arguments |
69 | * @param argv command-line arguments |
70 | * @return ID of the newly created task or zero on error. |
70 | * @return ID of the newly created task or zero on error. |
71 | */ |
71 | */ |
72 | task_id_t task_spawn(const char *path, char *const argv[]) |
72 | task_id_t task_spawn(const char *path, char *const argv[]) |
73 | { |
73 | { |
74 | loader_t *ldr; |
74 | loader_t *ldr; |
75 | task_id_t task_id; |
75 | task_id_t task_id; |
76 | int rc; |
76 | int rc; |
77 | 77 | ||
78 | /* Connect to a program loader. */ |
78 | /* Connect to a program loader. */ |
79 | ldr = loader_connect(); |
79 | ldr = loader_connect(); |
80 | if (ldr == NULL) |
80 | if (ldr == NULL) |
81 | return 0; |
81 | return 0; |
82 | 82 | ||
83 | /* Get task ID. */ |
83 | /* Get task ID. */ |
84 | rc = loader_get_task_id(ldr, &task_id); |
84 | rc = loader_get_task_id(ldr, &task_id); |
85 | if (rc != EOK) |
85 | if (rc != EOK) |
86 | goto error; |
86 | goto error; |
87 | 87 | ||
88 | /* Send program pathname. */ |
88 | /* Send program pathname. */ |
89 | rc = loader_set_pathname(ldr, path); |
89 | rc = loader_set_pathname(ldr, path); |
90 | if (rc != EOK) |
90 | if (rc != EOK) |
91 | goto error; |
91 | goto error; |
92 | 92 | ||
93 | /* Send arguments. */ |
93 | /* Send arguments. */ |
94 | rc = loader_set_args(ldr, argv); |
94 | rc = loader_set_args(ldr, argv); |
95 | if (rc != EOK) |
95 | if (rc != EOK) |
96 | goto error; |
96 | goto error; |
97 | 97 | ||
98 | /* Load the program. */ |
98 | /* Load the program. */ |
99 | rc = loader_load_program(ldr); |
99 | rc = loader_load_program(ldr); |
100 | if (rc != EOK) |
100 | if (rc != EOK) |
101 | goto error; |
101 | goto error; |
102 | 102 | ||
103 | /* Run it. */ |
103 | /* Run it. */ |
104 | rc = loader_run(ldr); |
104 | rc = loader_run(ldr); |
105 | if (rc != EOK) |
105 | if (rc != EOK) |
106 | goto error; |
106 | goto error; |
107 | 107 | ||
108 | /* Success */ |
108 | /* Success */ |
109 | 109 | ||
110 | free(ldr); |
110 | free(ldr); |
111 | return task_id; |
111 | return task_id; |
112 | 112 | ||
113 | /* Error exit */ |
113 | /* Error exit */ |
114 | error: |
114 | error: |
115 | loader_abort(ldr); |
115 | loader_abort(ldr); |
116 | free(ldr); |
116 | free(ldr); |
117 | 117 | ||
118 | return 0; |
118 | return 0; |
119 | } |
119 | } |
120 | 120 | ||
121 | /** @} |
121 | /** @} |
122 | */ |
122 | */ |
123 | 123 |