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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 <ipc/ipc.h> |
37 | #include <ipc/ipc.h> |
| 38 | #include <ipc/loader.h> |
38 | #include <ipc/loader.h> |
| 39 | #include <libc.h> |
39 | #include <libc.h> |
| 40 | #include <string.h> |
40 | #include <string.h> |
| - | 41 | #include <stdlib.h> |
|
| 41 | #include <async.h> |
42 | #include <async.h> |
| 42 | #include <errno.h> |
43 | #include <errno.h> |
| 43 | 44 | ||
| 44 | task_id_t task_get_id(void) |
45 | task_id_t task_get_id(void) |
| 45 | { |
46 | { |
| 46 | task_id_t task_id; |
47 | task_id_t task_id; |
| 47 | 48 | ||
| 48 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
49 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
| 49 | 50 | ||
| 50 | return task_id; |
51 | return task_id; |
| 51 | } |
52 | } |
| 52 | 53 | ||
| 53 | static int task_spawn_loader(void) |
54 | static int task_spawn_loader(void) |
| 54 | { |
55 | { |
| 55 | int phone_id, rc; |
56 | int phone_id, rc; |
| 56 | 57 | ||
| 57 | rc = __SYSCALL1(SYS_TASK_SPAWN_LOADER, (sysarg_t) &phone_id); |
58 | rc = __SYSCALL1(SYS_TASK_SPAWN_LOADER, (sysarg_t) &phone_id); |
| 58 | if (rc != 0) |
59 | if (rc != 0) |
| 59 | return rc; |
60 | return rc; |
| 60 | 61 | ||
| 61 | return phone_id; |
62 | return phone_id; |
| 62 | } |
63 | } |
| 63 | 64 | ||
| - | 65 | static int loader_set_args(int phone_id, const char *argv[]) |
|
| - | 66 | { |
|
| - | 67 | aid_t req; |
|
| - | 68 | ipc_call_t answer; |
|
| - | 69 | int rc; |
|
| - | 70 | ||
| - | 71 | const char **ap; |
|
| - | 72 | char *dp; |
|
| - | 73 | char *arg_buf; |
|
| - | 74 | size_t buffer_size; |
|
| - | 75 | size_t len; |
|
| - | 76 | ||
| - | 77 | /* |
|
| - | 78 | * Serialize the arguments into a single array. First |
|
| - | 79 | * compute size of the buffer needed. |
|
| - | 80 | */ |
|
| - | 81 | ap = argv; |
|
| - | 82 | buffer_size = 0; |
|
| - | 83 | while (*ap != NULL) { |
|
| - | 84 | buffer_size += strlen(*ap) + 1; |
|
| - | 85 | ++ap; |
|
| - | 86 | } |
|
| - | 87 | ||
| - | 88 | arg_buf = malloc(buffer_size); |
|
| - | 89 | if (arg_buf == NULL) return ENOMEM; |
|
| - | 90 | ||
| - | 91 | /* Now fill the buffer with null-terminated argument strings */ |
|
| - | 92 | ap = argv; |
|
| - | 93 | dp = arg_buf; |
|
| - | 94 | while (*ap != NULL) { |
|
| - | 95 | strcpy(dp, *ap); |
|
| - | 96 | dp += strlen(*ap) + 1; |
|
| - | 97 | ||
| - | 98 | ++ap; |
|
| - | 99 | } |
|
| - | 100 | ||
| - | 101 | /* Send serialized arguments to the loader */ |
|
| - | 102 | ||
| - | 103 | req = async_send_0(phone_id, LOADER_SET_ARGS, &answer); |
|
| - | 104 | rc = ipc_data_write_start(phone_id, (void *)arg_buf, buffer_size); |
|
| - | 105 | if (rc != EOK) { |
|
| - | 106 | async_wait_for(req, NULL); |
|
| - | 107 | return rc; |
|
| - | 108 | } |
|
| - | 109 | ||
| - | 110 | async_wait_for(req, &rc); |
|
| - | 111 | if (rc != EOK) return rc; |
|
| - | 112 | ||
| - | 113 | /* Free temporary buffer */ |
|
| - | 114 | free(arg_buf); |
|
| - | 115 | ||
| - | 116 | return EOK; |
|
| - | 117 | } |
|
| - | 118 | ||
| 64 | /** Create a new task by running an executable from VFS. |
119 | /** Create a new task by running an executable from VFS. |
| 65 | * |
120 | * |
| 66 | * @param path pathname of the binary to execute |
121 | * @param path pathname of the binary to execute |
| 67 | * @param argv command-line arguments |
122 | * @param argv command-line arguments |
| 68 | * @return ID of the newly created task or zero on error. |
123 | * @return ID of the newly created task or zero on error. |
| 69 | */ |
124 | */ |
| 70 | task_id_t task_spawn_ex(const char *path, const char *argv[]) |
125 | task_id_t task_spawn_ex(const char *path, const char *argv[]) |
| 71 | { |
126 | { |
| 72 | int phone_id; |
127 | int phone_id; |
| 73 | ipc_call_t answer; |
128 | ipc_call_t answer; |
| 74 | aid_t req; |
129 | aid_t req; |
| 75 | int rc; |
130 | int rc; |
| 76 | 131 | ||
| 77 | /* Spawn a program loader */ |
132 | /* Spawn a program loader */ |
| 78 | phone_id = task_spawn_loader(); |
133 | phone_id = task_spawn_loader(); |
| 79 | if (phone_id < 0) return 0; |
134 | if (phone_id < 0) return 0; |
| 80 | 135 | ||
| 81 | /* |
136 | /* |
| 82 | * Say hello so that the loader knows the incoming connection's |
137 | * Say hello so that the loader knows the incoming connection's |
| 83 | * phone hash. |
138 | * phone hash. |
| 84 | */ |
139 | */ |
| 85 | rc = async_req_0_0(phone_id, LOADER_HELLO); |
140 | rc = async_req_0_0(phone_id, LOADER_HELLO); |
| 86 | if (rc != EOK) return 0; |
141 | if (rc != EOK) return 0; |
| 87 | 142 | ||
| 88 | /* Send program pathname */ |
143 | /* Send program pathname */ |
| 89 | req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer); |
144 | req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer); |
| 90 | rc = ipc_data_write_start(phone_id, (void *)path, strlen(path)); |
145 | rc = ipc_data_write_start(phone_id, (void *)path, strlen(path)); |
| 91 | if (rc != EOK) { |
146 | if (rc != EOK) { |
| 92 | async_wait_for(req, NULL); |
147 | async_wait_for(req, NULL); |
| 93 | return 1; |
148 | return 1; |
| 94 | } |
149 | } |
| 95 | 150 | ||
| 96 | async_wait_for(req, &rc); |
151 | async_wait_for(req, &rc); |
| 97 | if (rc != EOK) return 0; |
152 | if (rc != EOK) goto error; |
| - | 153 | ||
| - | 154 | /* Send arguments */ |
|
| - | 155 | rc = loader_set_args(phone_id, argv); |
|
| - | 156 | if (rc != EOK) goto error; |
|
| 98 | 157 | ||
| 99 | /* Request loader to start the program */ |
158 | /* Request loader to start the program */ |
| 100 | rc = async_req_0_0(phone_id, LOADER_RUN); |
159 | rc = async_req_0_0(phone_id, LOADER_RUN); |
| 101 | if (rc != EOK) return 0; |
160 | if (rc != EOK) goto error; |
| 102 | 161 | ||
| - | 162 | /* Success */ |
|
| 103 | ipc_hangup(phone_id); |
163 | ipc_hangup(phone_id); |
| 104 | - | ||
| 105 | return 1; |
164 | return 1; |
| - | 165 | ||
| - | 166 | /* Error exit */ |
|
| - | 167 | error: |
|
| - | 168 | ipc_hangup(phone_id); |
|
| - | 169 | return 0; |
|
| 106 | } |
170 | } |
| 107 | 171 | ||
| 108 | int task_spawn(void *image, size_t size) |
172 | int task_spawn(void *image, size_t size) |
| 109 | { |
173 | { |
| 110 | return __SYSCALL2(SYS_TASK_SPAWN, (sysarg_t) image, (sysarg_t) size); |
174 | return __SYSCALL2(SYS_TASK_SPAWN, (sysarg_t) image, (sysarg_t) size); |
| 111 | } |
175 | } |
| 112 | 176 | ||
| 113 | /** @} |
177 | /** @} |
| 114 | */ |
178 | */ |
| 115 | 179 | ||