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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 | * All rights reserved. |
4 | * All rights reserved. |
4 | * |
5 | * |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
7 | * modification, are permitted provided that the following conditions |
7 | * are met: |
8 | * are met: |
8 | * |
9 | * |
9 | * - Redistributions of source code must retain the above copyright |
10 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * documentation and/or other materials provided with the distribution. |
14 | * - 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 |
15 | * derived from this software without specific prior written permission. |
16 | * derived from this software without specific prior written permission. |
16 | * |
17 | * |
17 | * 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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * 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, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * 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, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (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 |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
28 | */ |
28 | 29 | ||
29 | /** @addtogroup libc |
30 | /** @addtogroup libc |
30 | * @{ |
31 | * @{ |
31 | */ |
32 | */ |
32 | /** @file |
33 | /** @file |
33 | */ |
34 | */ |
34 | 35 | ||
35 | #include <task.h> |
36 | #include <task.h> |
- | 37 | #include <ipc/ipc.h> |
|
- | 38 | #include <ipc/loader.h> |
|
36 | #include <libc.h> |
39 | #include <libc.h> |
- | 40 | #include <string.h> |
|
- | 41 | #include <stdlib.h> |
|
- | 42 | #include <async.h> |
|
- | 43 | #include <errno.h> |
|
- | 44 | #include <vfs/vfs.h> |
|
37 | 45 | ||
38 | task_id_t task_get_id(void) |
46 | task_id_t task_get_id(void) |
39 | { |
47 | { |
40 | task_id_t task_id; |
48 | task_id_t task_id; |
41 | 49 | ||
42 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
50 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
43 | 51 | ||
44 | return task_id; |
52 | return task_id; |
45 | } |
53 | } |
46 | 54 | ||
47 | int task_spawn(void *image, size_t size) |
55 | static int task_spawn_loader(void) |
48 | { |
56 | { |
- | 57 | int phone_id, rc; |
|
- | 58 | ||
49 | return __SYSCALL2(SYS_TASK_SPAWN, (sysarg_t) image, (sysarg_t) size); |
59 | rc = __SYSCALL1(SYS_PROGRAM_SPAWN_LOADER, (sysarg_t) &phone_id); |
- | 60 | if (rc != 0) |
|
- | 61 | return rc; |
|
- | 62 | ||
- | 63 | return phone_id; |
|
- | 64 | } |
|
- | 65 | ||
- | 66 | static int loader_set_args(int phone_id, const char *argv[]) |
|
- | 67 | { |
|
- | 68 | aid_t req; |
|
- | 69 | ipc_call_t answer; |
|
- | 70 | ipcarg_t rc; |
|
- | 71 | ||
- | 72 | const char **ap; |
|
- | 73 | char *dp; |
|
- | 74 | char *arg_buf; |
|
- | 75 | size_t buffer_size; |
|
- | 76 | size_t len; |
|
- | 77 | ||
- | 78 | /* |
|
- | 79 | * Serialize the arguments into a single array. First |
|
- | 80 | * compute size of the buffer needed. |
|
- | 81 | */ |
|
- | 82 | ap = argv; |
|
- | 83 | buffer_size = 0; |
|
- | 84 | while (*ap != NULL) { |
|
- | 85 | buffer_size += strlen(*ap) + 1; |
|
- | 86 | ++ap; |
|
- | 87 | } |
|
- | 88 | ||
- | 89 | arg_buf = malloc(buffer_size); |
|
- | 90 | if (arg_buf == NULL) return ENOMEM; |
|
- | 91 | ||
- | 92 | /* Now fill the buffer with null-terminated argument strings */ |
|
- | 93 | ap = argv; |
|
- | 94 | dp = arg_buf; |
|
- | 95 | while (*ap != NULL) { |
|
- | 96 | strcpy(dp, *ap); |
|
- | 97 | dp += strlen(*ap) + 1; |
|
- | 98 | ||
- | 99 | ++ap; |
|
- | 100 | } |
|
- | 101 | ||
- | 102 | /* Send serialized arguments to the loader */ |
|
- | 103 | ||
- | 104 | req = async_send_0(phone_id, LOADER_SET_ARGS, &answer); |
|
- | 105 | rc = ipc_data_write_start(phone_id, (void *)arg_buf, buffer_size); |
|
- | 106 | if (rc != EOK) { |
|
- | 107 | async_wait_for(req, NULL); |
|
- | 108 | return rc; |
|
- | 109 | } |
|
- | 110 | ||
- | 111 | async_wait_for(req, &rc); |
|
- | 112 | if (rc != EOK) return rc; |
|
- | 113 | ||
- | 114 | /* Free temporary buffer */ |
|
- | 115 | free(arg_buf); |
|
- | 116 | ||
- | 117 | return EOK; |
|
- | 118 | } |
|
- | 119 | ||
- | 120 | /** Create a new task by running an executable from VFS. |
|
- | 121 | * |
|
- | 122 | * @param path pathname of the binary to execute |
|
- | 123 | * @param argv command-line arguments |
|
- | 124 | * @return ID of the newly created task or zero on error. |
|
- | 125 | */ |
|
- | 126 | task_id_t task_spawn(const char *path, const char *argv[]) |
|
- | 127 | { |
|
- | 128 | int phone_id; |
|
- | 129 | ipc_call_t answer; |
|
- | 130 | aid_t req; |
|
- | 131 | int rc; |
|
- | 132 | ipcarg_t retval; |
|
- | 133 | ||
- | 134 | char *pa; |
|
- | 135 | size_t pa_len; |
|
- | 136 | ||
- | 137 | pa = absolutize(path, &pa_len); |
|
- | 138 | if (!pa) |
|
- | 139 | return 0; |
|
- | 140 | ||
- | 141 | /* Spawn a program loader */ |
|
- | 142 | phone_id = task_spawn_loader(); |
|
- | 143 | if (phone_id < 0) |
|
- | 144 | return 0; |
|
- | 145 | ||
- | 146 | /* |
|
- | 147 | * Say hello so that the loader knows the incoming connection's |
|
- | 148 | * phone hash. |
|
- | 149 | */ |
|
- | 150 | rc = async_req_0_0(phone_id, LOADER_HELLO); |
|
- | 151 | if (rc != EOK) |
|
- | 152 | return 0; |
|
- | 153 | ||
- | 154 | /* Send program pathname */ |
|
- | 155 | req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer); |
|
- | 156 | rc = ipc_data_write_start(phone_id, (void *)pa, pa_len); |
|
- | 157 | if (rc != EOK) { |
|
- | 158 | async_wait_for(req, NULL); |
|
- | 159 | return 1; |
|
- | 160 | } |
|
- | 161 | ||
- | 162 | async_wait_for(req, &retval); |
|
- | 163 | if (retval != EOK) |
|
- | 164 | goto error; |
|
- | 165 | ||
- | 166 | /* Send arguments */ |
|
- | 167 | rc = loader_set_args(phone_id, argv); |
|
- | 168 | if (rc != EOK) |
|
- | 169 | goto error; |
|
- | 170 | ||
- | 171 | /* Request loader to start the program */ |
|
- | 172 | rc = async_req_0_0(phone_id, LOADER_RUN); |
|
- | 173 | if (rc != EOK) |
|
- | 174 | goto error; |
|
- | 175 | ||
- | 176 | /* Success */ |
|
- | 177 | ipc_hangup(phone_id); |
|
- | 178 | return 1; |
|
- | 179 | ||
- | 180 | /* Error exit */ |
|
- | 181 | error: |
|
- | 182 | ipc_hangup(phone_id); |
|
- | 183 | return 0; |
|
50 | } |
184 | } |
51 | 185 | ||
52 | /** @} |
186 | /** @} |
53 | */ |
187 | */ |
54 | 188 |