Rev 4370 | Rev 4414 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 4370 | Rev 4409 | ||
---|---|---|---|
Line 1... | Line 1... | ||
1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jakub Jermar |
2 | * Copyright (c) 2009 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
Line 120... | Line 120... | ||
120 | async_set_client_connection(conn); |
120 | async_set_client_connection(conn); |
121 | 121 | ||
122 | return IPC_GET_RETVAL(answer); |
122 | return IPC_GET_RETVAL(answer); |
123 | } |
123 | } |
124 | 124 | ||
- | 125 | void fs_node_initialize(fs_node_t *fn) |
|
- | 126 | { |
|
- | 127 | memset(fn, 0, sizeof(fs_node_t)); |
|
- | 128 | } |
|
- | 129 | ||
- | 130 | void libfs_mount(libfs_ops_t *ops, ipc_callid_t rid, ipc_call_t *request) |
|
- | 131 | { |
|
- | 132 | dev_handle_t mp_dev_handle = (dev_handle_t)IPC_GET_ARG1(*request); |
|
- | 133 | fs_index_t mp_fs_index = (fs_index_t)IPC_GET_ARG2(*request); |
|
- | 134 | fs_handle_t mr_fs_handle = (fs_handle_t)IPC_GET_ARG3(*request); |
|
- | 135 | dev_handle_t mr_dev_handle = (dev_handle_t)IPC_GET_ARG4(*request); |
|
- | 136 | int res; |
|
- | 137 | ipcarg_t rc; |
|
- | 138 | ||
- | 139 | ipc_call_t call; |
|
- | 140 | ipc_callid_t callid; |
|
- | 141 | ||
- | 142 | /* accept the phone */ |
|
- | 143 | callid = async_get_call(&call); |
|
- | 144 | int mountee_phone = (int)IPC_GET_ARG1(call); |
|
- | 145 | if ((IPC_GET_METHOD(call) != IPC_M_CONNECTION_CLONE) || |
|
- | 146 | mountee_phone < 0) { |
|
- | 147 | ipc_answer_0(callid, EINVAL); |
|
- | 148 | ipc_answer_0(rid, EINVAL); |
|
- | 149 | return; |
|
- | 150 | } |
|
- | 151 | ipc_answer_0(callid, EOK); /* acknowledge the mountee_phone */ |
|
- | 152 | ||
- | 153 | res = ipc_data_write_receive(&callid, NULL); |
|
- | 154 | if (!res) { |
|
- | 155 | ipc_hangup(mountee_phone); |
|
- | 156 | ipc_answer_0(callid, EINVAL); |
|
- | 157 | ipc_answer_0(rid, EINVAL); |
|
- | 158 | return; |
|
- | 159 | } |
|
- | 160 | ||
- | 161 | fs_node_t *fn = ops->node_get(mp_dev_handle, mp_fs_index); |
|
- | 162 | if (!fn) { |
|
- | 163 | ipc_hangup(mountee_phone); |
|
- | 164 | ipc_answer_0(callid, ENOENT); |
|
- | 165 | ipc_answer_0(rid, ENOENT); |
|
- | 166 | return; |
|
- | 167 | } |
|
- | 168 | ||
- | 169 | if (fn->mp_data.mp_active) { |
|
- | 170 | ipc_hangup(mountee_phone); |
|
- | 171 | ops->node_put(fn); |
|
- | 172 | ipc_answer_0(callid, EBUSY); |
|
- | 173 | ipc_answer_0(rid, EBUSY); |
|
- | 174 | return; |
|
- | 175 | } |
|
- | 176 | ||
- | 177 | rc = async_req_0_0(mountee_phone, IPC_M_CONNECT_ME); |
|
- | 178 | if (rc != 0) { |
|
- | 179 | ipc_hangup(mountee_phone); |
|
- | 180 | ops->node_put(fn); |
|
- | 181 | ipc_answer_0(callid, rc); |
|
- | 182 | ipc_answer_0(rid, rc); |
|
- | 183 | return; |
|
- | 184 | } |
|
- | 185 | ||
- | 186 | ipc_call_t answer; |
|
- | 187 | aid_t msg = async_send_1(mountee_phone, VFS_MOUNTED, mr_dev_handle, |
|
- | 188 | &answer); |
|
- | 189 | ipc_forward_fast(callid, mountee_phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
|
- | 190 | async_wait_for(msg, &rc); |
|
- | 191 | ||
- | 192 | if (rc == EOK) { |
|
- | 193 | fn->mp_data.mp_active = true; |
|
- | 194 | fn->mp_data.fs_handle = mr_fs_handle; |
|
- | 195 | fn->mp_data.dev_handle = mr_dev_handle; |
|
- | 196 | fn->mp_data.phone = mountee_phone; |
|
- | 197 | } |
|
- | 198 | /* |
|
- | 199 | * Do not release the FS node so that it stays in memory. |
|
- | 200 | */ |
|
- | 201 | ipc_answer_0(rid, rc); |
|
- | 202 | } |
|
- | 203 | ||
125 | /** Lookup VFS triplet by name in the file system name space. |
204 | /** Lookup VFS triplet by name in the file system name space. |
126 | * |
205 | * |
127 | * The path passed in the PLB must be in the canonical file system path format |
206 | * The path passed in the PLB must be in the canonical file system path format |
128 | * as returned by the canonify() function. |
207 | * as returned by the canonify() function. |
129 | * |
208 | * |
Line 135... | Line 214... | ||
135 | * @param request VFS_LOOKUP request data itself. |
214 | * @param request VFS_LOOKUP request data itself. |
136 | */ |
215 | */ |
137 | void libfs_lookup(libfs_ops_t *ops, fs_handle_t fs_handle, ipc_callid_t rid, |
216 | void libfs_lookup(libfs_ops_t *ops, fs_handle_t fs_handle, ipc_callid_t rid, |
138 | ipc_call_t *request) |
217 | ipc_call_t *request) |
139 | { |
218 | { |
140 | unsigned next = IPC_GET_ARG1(*request); |
219 | unsigned first = IPC_GET_ARG1(*request); |
141 | unsigned last = IPC_GET_ARG2(*request); |
220 | unsigned last = IPC_GET_ARG2(*request); |
- | 221 | unsigned next = first; |
|
142 | dev_handle_t dev_handle = IPC_GET_ARG3(*request); |
222 | dev_handle_t dev_handle = IPC_GET_ARG3(*request); |
143 | int lflag = IPC_GET_ARG4(*request); |
223 | int lflag = IPC_GET_ARG4(*request); |
144 | fs_index_t index = IPC_GET_ARG5(*request); /* when L_LINK specified */ |
224 | fs_index_t index = IPC_GET_ARG5(*request); /* when L_LINK specified */ |
145 | char component[NAME_MAX + 1]; |
225 | char component[NAME_MAX + 1]; |
146 | int len; |
226 | int len; |
Line 150... | Line 230... | ||
150 | 230 | ||
151 | fs_node_t *par = NULL; |
231 | fs_node_t *par = NULL; |
152 | fs_node_t *cur = ops->root_get(dev_handle); |
232 | fs_node_t *cur = ops->root_get(dev_handle); |
153 | fs_node_t *tmp = NULL; |
233 | fs_node_t *tmp = NULL; |
154 | 234 | ||
- | 235 | if (cur->mp_data.mp_active) { |
|
- | 236 | ipc_forward_slow(rid, cur->mp_data.phone, VFS_LOOKUP, |
|
- | 237 | next, last, cur->mp_data.dev_handle, lflag, index, |
|
- | 238 | IPC_FF_ROUTE_FROM_ME); |
|
- | 239 | ops->node_put(cur); |
|
- | 240 | return; |
|
- | 241 | } |
|
- | 242 | ||
155 | if (ops->plb_get_char(next) == '/') |
243 | if (ops->plb_get_char(next) == '/') |
156 | next++; /* eat slash */ |
244 | next++; /* eat slash */ |
157 | 245 | ||
158 | while (next <= last && ops->has_children(cur)) { |
246 | while (next <= last && ops->has_children(cur)) { |
159 | /* collect the component */ |
247 | /* collect the component */ |
Line 172... | Line 260... | ||
172 | component[len] = '\0'; |
260 | component[len] = '\0'; |
173 | next++; /* eat slash */ |
261 | next++; /* eat slash */ |
174 | 262 | ||
175 | /* match the component */ |
263 | /* match the component */ |
176 | tmp = ops->match(cur, component); |
264 | tmp = ops->match(cur, component); |
- | 265 | if (tmp && tmp->mp_data.mp_active) { |
|
- | 266 | if (next > last) |
|
- | 267 | next = last = first; |
|
- | 268 | else |
|
- | 269 | next--; |
|
- | 270 | ||
- | 271 | ipc_forward_slow(rid, tmp->mp_data.phone, VFS_LOOKUP, |
|
- | 272 | next, last, tmp->mp_data.dev_handle, lflag, index, |
|
- | 273 | IPC_FF_ROUTE_FROM_ME); |
|
- | 274 | ops->node_put(cur); |
|
- | 275 | ops->node_put(tmp); |
|
- | 276 | if (par) |
|
- | 277 | ops->node_put(par); |
|
- | 278 | return; |
|
- | 279 | } |
|
177 | 280 | ||
178 | /* handle miss: match amongst siblings */ |
281 | /* handle miss: match amongst siblings */ |
179 | if (!tmp) { |
282 | if (!tmp) { |
180 | if (next <= last) { |
283 | if (next <= last) { |
181 | /* there are unprocessed components */ |
284 | /* there are unprocessed components */ |