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| Rev 3566 | Rev 3896 | ||
|---|---|---|---|
| Line 188... | Line 188... | ||
| 188 | thread_ready(p->main_thread); |
188 | thread_ready(p->main_thread); |
| 189 | } |
189 | } |
| 190 | 190 | ||
| 191 | /** Syscall for creating a new loader instance from userspace. |
191 | /** Syscall for creating a new loader instance from userspace. |
| 192 | * |
192 | * |
| 193 | * Creates a new task from the program loader image, connects a phone |
193 | * Creates a new task from the program loader image and sets |
| 194 | * to it and stores the phone id into the provided buffer. |
194 | * the task name. |
| 195 | * |
195 | * |
| 196 | * @param uspace_phone_id Userspace address where to store the phone id. |
- | |
| 197 | * @param name Name to set on the new task (typically the same |
196 | * @param name Name to set on the new task (typically the same |
| 198 | * as the command used to execute it). |
197 | * as the command used to execute it). |
| 199 | * |
198 | * |
| 200 | * @return 0 on success or an error code from @ref errno.h. |
199 | * @return 0 on success or an error code from @ref errno.h. |
| 201 | */ |
200 | */ |
| 202 | unative_t sys_program_spawn_loader(int *uspace_phone_id, char *uspace_name, |
201 | unative_t sys_program_spawn_loader(char *uspace_name, size_t name_len) |
| 203 | size_t name_len) |
- | |
| 204 | { |
202 | { |
| 205 | program_t p; |
203 | program_t p; |
| 206 | int fake_id; |
- | |
| 207 | int rc; |
204 | int rc; |
| 208 | int phone_id; |
- | |
| 209 | char namebuf[TASK_NAME_BUFLEN]; |
205 | char namebuf[TASK_NAME_BUFLEN]; |
| 210 | 206 | ||
| 211 | fake_id = 0; |
- | |
| 212 | - | ||
| 213 | /* Before we even try creating the task, see if we can write the id */ |
- | |
| 214 | rc = (unative_t) copy_to_uspace(uspace_phone_id, &fake_id, |
- | |
| 215 | sizeof(fake_id)); |
- | |
| 216 | if (rc != 0) |
- | |
| 217 | return rc; |
- | |
| 218 | - | ||
| 219 | /* Cap length of name and copy it from userspace. */ |
207 | /* Cap length of name and copy it from userspace. */ |
| 220 | 208 | ||
| 221 | if (name_len > THREAD_NAME_BUFLEN - 1) |
209 | if (name_len > THREAD_NAME_BUFLEN - 1) |
| 222 | name_len = THREAD_NAME_BUFLEN - 1; |
210 | name_len = THREAD_NAME_BUFLEN - 1; |
| 223 | 211 | ||
| Line 225... | Line 213... | ||
| 225 | if (rc != 0) |
213 | if (rc != 0) |
| 226 | return (unative_t) rc; |
214 | return (unative_t) rc; |
| 227 | 215 | ||
| 228 | namebuf[name_len] = '\0'; |
216 | namebuf[name_len] = '\0'; |
| 229 | 217 | ||
| 230 | /* Allocate the phone for communicating with the new task. */ |
- | |
| 231 | - | ||
| 232 | phone_id = phone_alloc(); |
- | |
| 233 | if (phone_id < 0) |
- | |
| 234 | return ELIMIT; |
- | |
| 235 | - | ||
| 236 | /* Spawn the new task. */ |
218 | /* Spawn the new task. */ |
| 237 | 219 | ||
| 238 | rc = program_create_loader(&p, namebuf); |
220 | rc = program_create_loader(&p, namebuf); |
| 239 | if (rc != 0) |
221 | if (rc != 0) |
| 240 | return rc; |
222 | return rc; |
| 241 | 223 | ||
| 242 | phone_connect(phone_id, &p.task->answerbox); |
- | |
| 243 | - | ||
| 244 | /* No need to aquire lock before task_ready() */ |
- | |
| 245 | rc = (unative_t) copy_to_uspace(uspace_phone_id, &phone_id, |
- | |
| 246 | sizeof(phone_id)); |
- | |
| 247 | if (rc != 0) { |
- | |
| 248 | /* Ooops */ |
- | |
| 249 | ipc_phone_hangup(&TASK->phones[phone_id]); |
- | |
| 250 | task_kill(p.task->taskid); |
- | |
| 251 | return rc; |
- | |
| 252 | } |
- | |
| 253 | - | ||
| 254 | // FIXME: control the capabilities |
224 | // FIXME: control the capabilities |
| 255 | cap_set(p.task, cap_get(TASK)); |
225 | cap_set(p.task, cap_get(TASK)); |
| 256 | 226 | ||
| 257 | program_ready(&p); |
227 | program_ready(&p); |
| 258 | 228 | ||