| 282,7 → 282,6 |
|---|
| int dev_handle = IPC_GET_ARG1(*request); |
| unsigned long index = IPC_GET_ARG2(*request); |
| off_t pos = IPC_GET_ARG3(*request); |
| size_t size = IPC_GET_ARG4(*request); |
| |
| /* |
| * Lookup the respective dentry. |
| 297,38 → 296,18 |
|---|
| dh_link); |
| |
| /* |
| * Receive the communication area. |
| * Receive the read request. |
| */ |
| ipc_callid_t callid; |
| ipc_call_t call; |
| callid = async_get_call(&call); |
| if (IPC_GET_METHOD(call) != IPC_M_AS_AREA_SEND) { |
| size_t size; |
| if (!ipc_data_read_receive(&callid, size)) { |
| ipc_answer_0(callid, EINVAL); |
| ipc_answer_0(rid, EINVAL); |
| return; |
| } |
| |
| int flags = IPC_GET_ARG3(call); |
| if (!(flags & AS_AREA_WRITE)) { |
| ipc_answer_0(callid, EINVAL); |
| ipc_answer_0(rid, EINVAL); |
| return; |
| } |
| size_t sz = IPC_GET_ARG2(call); |
| uint8_t *buf = as_get_mappable_page(sz); |
| if (!buf) { |
| ipc_answer_0(callid, ENOMEM); |
| ipc_answer_0(rid, ENOMEM); |
| return; |
| } |
| ipc_answer_1(callid, EOK, buf); /* commit to share the area */ |
| |
| size_t bytes = max(0, min(dentry->size - pos, size)); |
| memcpy(buf, dentry->data + pos, bytes); |
| |
| (void) as_area_destroy(buf); |
| |
| ipc_answer_1(rid, EOK, bytes); |
| (void) ipc_data_read_deliver(callid, dentry->data + pos, bytes); |
| } |
| |
| /** |