| 1,5 → 1,5 |
|---|
| /* |
| * Copyright (c) 2008 Jakub Jermar |
| * Copyright (c) 2009 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| 122,6 → 122,85 |
|---|
| return IPC_GET_RETVAL(answer); |
| } |
| |
| void fs_node_initialize(fs_node_t *fn) |
| { |
| memset(fn, 0, sizeof(fs_node_t)); |
| } |
| |
| void libfs_mount(libfs_ops_t *ops, ipc_callid_t rid, ipc_call_t *request) |
| { |
| dev_handle_t mp_dev_handle = (dev_handle_t)IPC_GET_ARG1(*request); |
| fs_index_t mp_fs_index = (fs_index_t)IPC_GET_ARG2(*request); |
| fs_handle_t mr_fs_handle = (fs_handle_t)IPC_GET_ARG3(*request); |
| dev_handle_t mr_dev_handle = (dev_handle_t)IPC_GET_ARG4(*request); |
| int res; |
| ipcarg_t rc; |
| |
| ipc_call_t call; |
| ipc_callid_t callid; |
| |
| /* accept the phone */ |
| callid = async_get_call(&call); |
| int mountee_phone = (int)IPC_GET_ARG1(call); |
| if ((IPC_GET_METHOD(call) != IPC_M_CONNECTION_CLONE) || |
| mountee_phone < 0) { |
| ipc_answer_0(callid, EINVAL); |
| ipc_answer_0(rid, EINVAL); |
| return; |
| } |
| ipc_answer_0(callid, EOK); /* acknowledge the mountee_phone */ |
| |
| res = ipc_data_write_receive(&callid, NULL); |
| if (!res) { |
| ipc_hangup(mountee_phone); |
| ipc_answer_0(callid, EINVAL); |
| ipc_answer_0(rid, EINVAL); |
| return; |
| } |
| |
| fs_node_t *fn = ops->node_get(mp_dev_handle, mp_fs_index); |
| if (!fn) { |
| ipc_hangup(mountee_phone); |
| ipc_answer_0(callid, ENOENT); |
| ipc_answer_0(rid, ENOENT); |
| return; |
| } |
| |
| if (fn->mp_data.mp_active) { |
| ipc_hangup(mountee_phone); |
| ops->node_put(fn); |
| ipc_answer_0(callid, EBUSY); |
| ipc_answer_0(rid, EBUSY); |
| return; |
| } |
| |
| rc = async_req_0_0(mountee_phone, IPC_M_CONNECT_ME); |
| if (rc != 0) { |
| ipc_hangup(mountee_phone); |
| ops->node_put(fn); |
| ipc_answer_0(callid, rc); |
| ipc_answer_0(rid, rc); |
| return; |
| } |
| |
| ipc_call_t answer; |
| aid_t msg = async_send_1(mountee_phone, VFS_MOUNTED, mr_dev_handle, |
| &answer); |
| ipc_forward_fast(callid, mountee_phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
| async_wait_for(msg, &rc); |
| |
| if (rc == EOK) { |
| fn->mp_data.mp_active = true; |
| fn->mp_data.fs_handle = mr_fs_handle; |
| fn->mp_data.dev_handle = mr_dev_handle; |
| fn->mp_data.phone = mountee_phone; |
| } |
| /* |
| * Do not release the FS node so that it stays in memory. |
| */ |
| ipc_answer_0(rid, rc); |
| } |
| |
| /** Lookup VFS triplet by name in the file system name space. |
| * |
| * The path passed in the PLB must be in the canonical file system path format |
| 137,8 → 216,9 |
|---|
| void libfs_lookup(libfs_ops_t *ops, fs_handle_t fs_handle, ipc_callid_t rid, |
| ipc_call_t *request) |
| { |
| unsigned next = IPC_GET_ARG1(*request); |
| unsigned first = IPC_GET_ARG1(*request); |
| unsigned last = IPC_GET_ARG2(*request); |
| unsigned next = first; |
| dev_handle_t dev_handle = IPC_GET_ARG3(*request); |
| int lflag = IPC_GET_ARG4(*request); |
| fs_index_t index = IPC_GET_ARG5(*request); /* when L_LINK specified */ |
| 152,6 → 232,14 |
|---|
| fs_node_t *cur = ops->root_get(dev_handle); |
| fs_node_t *tmp = NULL; |
| |
| if (cur->mp_data.mp_active) { |
| ipc_forward_slow(rid, cur->mp_data.phone, VFS_LOOKUP, |
| next, last, cur->mp_data.dev_handle, lflag, index, |
| IPC_FF_ROUTE_FROM_ME); |
| ops->node_put(cur); |
| return; |
| } |
| |
| if (ops->plb_get_char(next) == '/') |
| next++; /* eat slash */ |
| |
| 174,6 → 262,21 |
|---|
| |
| /* match the component */ |
| tmp = ops->match(cur, component); |
| if (tmp && tmp->mp_data.mp_active) { |
| if (next > last) |
| next = last = first; |
| else |
| next--; |
| |
| ipc_forward_slow(rid, tmp->mp_data.phone, VFS_LOOKUP, |
| next, last, tmp->mp_data.dev_handle, lflag, index, |
| IPC_FF_ROUTE_FROM_ME); |
| ops->node_put(cur); |
| ops->node_put(tmp); |
| if (par) |
| ops->node_put(par); |
| return; |
| } |
| |
| /* handle miss: match amongst siblings */ |
| if (!tmp) { |