Changeset 431d6d6 in mainline
- Timestamp:
- 2011-05-07T11:10:17Z (13 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- e5165a3
- Parents:
- 8594505
- Location:
- uspace
- Files:
-
- 4 edited
Legend:
- Unmodified
- Added
- Removed
-
uspace/lib/c/generic/devman.c
r8594505 r431d6d6 374 374 } 375 375 376 int devman_get_device_path(devman_handle_t handle, char *path, size_t path_size) 377 { 378 int phone = devman_get_phone(DEVMAN_CLIENT, 0); 379 380 if (phone < 0) 381 return phone; 382 383 async_serialize_start(); 384 385 ipc_call_t answer; 386 aid_t req = async_send_1(phone, DEVMAN_DEVICE_GET_DEVICE_PATH, 387 handle, &answer); 388 389 ipc_call_t data_request_call; 390 aid_t data_request = async_data_read(phone, path, path_size, 391 &data_request_call); 392 if (data_request == 0) { 393 async_wait_for(req, NULL); 394 async_serialize_end(); 395 return ENOMEM; 396 } 397 398 sysarg_t data_request_rc; 399 sysarg_t opening_request_rc; 400 async_wait_for(data_request, &data_request_rc); 401 async_wait_for(req, &opening_request_rc); 402 403 async_serialize_end(); 404 405 if (data_request_rc != EOK) { 406 /* Prefer the return code of the opening request. */ 407 if (opening_request_rc != EOK) { 408 return (int) opening_request_rc; 409 } else { 410 return (int) data_request_rc; 411 } 412 } 413 if (opening_request_rc != EOK) { 414 return (int) opening_request_rc; 415 } 416 417 path[path_size - 1] = 0; 418 419 if (IPC_GET_ARG2(data_request_call) >= path_size) { 420 return ELIMIT; 421 } 422 423 return EOK; 424 } 425 376 426 377 427 /** @} -
uspace/lib/c/include/devman.h
r8594505 r431d6d6 55 55 extern int devman_device_get_handle_by_class(const char *, const char *, 56 56 devman_handle_t *, unsigned int); 57 extern int devman_get_device_path(devman_handle_t, char *, size_t); 57 58 58 59 extern int devman_add_device_to_class(devman_handle_t, const char *); -
uspace/lib/c/include/ipc/devman.h
r8594505 r431d6d6 149 149 typedef enum { 150 150 DEVMAN_DEVICE_GET_HANDLE = IPC_FIRST_USER_METHOD, 151 DEVMAN_DEVICE_GET_HANDLE_BY_CLASS 151 DEVMAN_DEVICE_GET_HANDLE_BY_CLASS, 152 DEVMAN_DEVICE_GET_DEVICE_PATH 152 153 } client_to_devman_t; 153 154 -
uspace/srv/devman/main.c
r8594505 r431d6d6 515 515 } 516 516 517 /** Find device path by its handle. */ 518 static void devman_get_device_path_by_handle(ipc_callid_t iid, 519 ipc_call_t *icall) 520 { 521 devman_handle_t handle = IPC_GET_ARG1(*icall); 522 523 fun_node_t *fun = find_fun_node(&device_tree, handle); 524 if (fun == NULL) { 525 async_answer_0(iid, ENOMEM); 526 return; 527 } 528 529 ipc_callid_t data_callid; 530 size_t data_len; 531 if (!async_data_read_receive(&data_callid, &data_len)) { 532 async_answer_0(iid, EINVAL); 533 return; 534 } 535 536 void *buffer = malloc(data_len); 537 if (buffer == NULL) { 538 async_answer_0(data_callid, ENOMEM); 539 async_answer_0(iid, ENOMEM); 540 return; 541 } 542 543 size_t sent_length = str_size(fun->pathname); 544 if (sent_length > data_len) { 545 sent_length = data_len; 546 } 547 548 async_data_read_finalize(data_callid, fun->pathname, sent_length); 549 async_answer_0(iid, EOK); 550 551 free(buffer); 552 } 553 517 554 518 555 /** Function for handling connections from a client to the device manager. */ … … 536 573 case DEVMAN_DEVICE_GET_HANDLE_BY_CLASS: 537 574 devman_function_get_handle_by_class(callid, &call); 575 break; 576 case DEVMAN_DEVICE_GET_DEVICE_PATH: 577 devman_get_device_path_by_handle(callid, &call); 538 578 break; 539 579 default:
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