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| 32 | */ |
32 | */ |
| 33 | /** @file |
33 | /** @file |
| 34 | */ |
34 | */ |
| 35 | 35 | ||
| 36 | #include <task.h> |
36 | #include <task.h> |
| 37 | #include <ipc/ipc.h> |
- | |
| 38 | #include <ipc/loader.h> |
- | |
| 39 | #include <libc.h> |
37 | #include <libc.h> |
| 40 | #include <string.h> |
- | |
| 41 | #include <stdlib.h> |
38 | #include <stdlib.h> |
| 42 | #include <async.h> |
- | |
| 43 | #include <errno.h> |
39 | #include <errno.h> |
| 44 | #include <vfs/vfs.h> |
40 | #include <loader/loader.h> |
| 45 | 41 | ||
| 46 | task_id_t task_get_id(void) |
42 | task_id_t task_get_id(void) |
| 47 | { |
43 | { |
| 48 | task_id_t task_id; |
44 | task_id_t task_id; |
| 49 | 45 | ||
| 50 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
46 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
| 51 | 47 | ||
| 52 | return task_id; |
48 | return task_id; |
| 53 | } |
49 | } |
| 54 | 50 | ||
| 55 | static int task_spawn_loader(void) |
- | |
| 56 | { |
- | |
| 57 | int phone_id, rc; |
- | |
| 58 | - | ||
| 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 |
51 | /** Create a new task by running an executable from the filesystem. |
| 80 | * compute size of the buffer needed. |
- | |
| 81 | */ |
52 | * |
| 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 */ |
53 | * This is really just a convenience wrapper over the more complicated |
| 93 | ap = argv; |
- | |
| 94 | dp = arg_buf; |
54 | * loader API. |
| 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 | * |
55 | * |
| 122 | * @param path pathname of the binary to execute |
56 | * @param path pathname of the binary to execute |
| 123 | * @param argv command-line arguments |
57 | * @param argv command-line arguments |
| 124 | * @return ID of the newly created task or zero on error. |
58 | * @return ID of the newly created task or zero on error. |
| 125 | */ |
59 | */ |
| 126 | task_id_t task_spawn(const char *path, const char *argv[]) |
60 | task_id_t task_spawn(const char *path, char *const argv[]) |
| 127 | { |
61 | { |
| 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; |
62 | loader_t *ldr; |
| 136 | task_id_t task_id; |
63 | task_id_t task_id; |
| - | 64 | int rc; |
|
| 137 | 65 | ||
| 138 | pa = absolutize(path, &pa_len); |
- | |
| 139 | if (!pa) |
- | |
| 140 | return 0; |
- | |
| 141 | - | ||
| 142 | /* Spawn a program loader */ |
66 | /* Spawn a program loader. */ |
| 143 | phone_id = task_spawn_loader(); |
67 | ldr = loader_spawn(); |
| 144 | if (phone_id < 0) |
- | |
| 145 | return 0; |
- | |
| 146 | - | ||
| 147 | /* |
- | |
| 148 | * Say hello so that the loader knows the incoming connection's |
- | |
| 149 | * phone hash. |
- | |
| 150 | */ |
- | |
| 151 | rc = async_req_0_0(phone_id, LOADER_HELLO); |
- | |
| 152 | if (rc != EOK) |
68 | if (ldr == NULL) |
| 153 | return 0; |
69 | return 0; |
| 154 | 70 | ||
| 155 | /* Get task ID. */ |
71 | /* Get task ID. */ |
| 156 | req = async_send_0(phone_id, LOADER_GET_TASKID, &answer); |
- | |
| 157 | rc = ipc_data_read_start(phone_id, &task_id, sizeof(task_id)); |
72 | rc = loader_get_task_id(ldr, &task_id); |
| 158 | if (rc != EOK) { |
73 | if (rc != EOK) |
| 159 | async_wait_for(req, NULL); |
- | |
| 160 | goto error; |
74 | goto error; |
| 161 | } |
- | |
| 162 | 75 | ||
| - | 76 | /* Send program pathname. */ |
|
| 163 | async_wait_for(req, &retval); |
77 | rc = loader_set_pathname(ldr, path); |
| 164 | if (retval != EOK) |
78 | if (rc != EOK) |
| 165 | goto error; |
79 | goto error; |
| 166 | 80 | ||
| 167 | /* Send program pathname */ |
81 | /* Send arguments. */ |
| 168 | req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer); |
- | |
| 169 | rc = ipc_data_write_start(phone_id, (void *)pa, pa_len); |
82 | rc = loader_set_args(ldr, argv); |
| 170 | if (rc != EOK) { |
83 | if (rc != EOK) |
| 171 | async_wait_for(req, NULL); |
- | |
| 172 | return 1; |
- | |
| 173 | } |
- | |
| 174 | - | ||
| 175 | async_wait_for(req, &retval); |
- | |
| 176 | if (retval != EOK) |
- | |
| 177 | goto error; |
84 | goto error; |
| 178 | 85 | ||
| 179 | /* Send arguments */ |
86 | /* Load the program. */ |
| 180 | rc = loader_set_args(phone_id, argv); |
87 | rc = loader_load_program(ldr); |
| 181 | if (rc != EOK) |
88 | if (rc != EOK) |
| 182 | goto error; |
89 | goto error; |
| 183 | 90 | ||
| - | 91 | /* Run it. */ |
|
| 184 | /* Request loader to start the program */ |
92 | /* Load the program. */ |
| 185 | rc = async_req_0_0(phone_id, LOADER_RUN); |
93 | rc = loader_run(ldr); |
| 186 | if (rc != EOK) |
94 | if (rc != EOK) |
| 187 | goto error; |
95 | goto error; |
| 188 | 96 | ||
| 189 | /* Success */ |
97 | /* Success */ |
| - | 98 | ||
| 190 | ipc_hangup(phone_id); |
99 | free(ldr); |
| 191 | return task_id; |
100 | return task_id; |
| 192 | 101 | ||
| 193 | /* Error exit */ |
102 | /* Error exit */ |
| 194 | error: |
103 | error: |
| 195 | ipc_hangup(phone_id); |
104 | loader_abort(ldr); |
| - | 105 | free(ldr); |
|
| - | 106 | ||
| 196 | return 0; |
107 | return 0; |
| 197 | } |
108 | } |
| 198 | 109 | ||
| 199 | /** @} |
110 | /** @} |
| 200 | */ |
111 | */ |