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Rev 2760 | Rev 2763 | ||
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Line 139... | Line 139... | ||
139 | { |
139 | { |
140 | unsigned next = IPC_GET_ARG1(*request); |
140 | unsigned next = IPC_GET_ARG1(*request); |
141 | unsigned last = IPC_GET_ARG2(*request); |
141 | unsigned last = IPC_GET_ARG2(*request); |
142 | int dev_handle = IPC_GET_ARG3(*request); |
142 | int dev_handle = IPC_GET_ARG3(*request); |
143 | int lflag = IPC_GET_ARG4(*request); |
143 | int lflag = IPC_GET_ARG4(*request); |
- | 144 | int index = IPC_GET_ARG5(*request); /* when L_LINK specified */ |
|
144 | 145 | ||
145 | if (last < next) |
146 | if (last < next) |
146 | last += PLB_SIZE; |
147 | last += PLB_SIZE; |
147 | 148 | ||
148 | void *par = NULL; |
149 | void *par = NULL; |
Line 178... | Line 179... | ||
178 | while (tmp && !ops->match(cur, tmp, component)) |
179 | while (tmp && !ops->match(cur, tmp, component)) |
179 | tmp = ops->sibling_get(tmp); |
180 | tmp = ops->sibling_get(tmp); |
180 | 181 | ||
181 | /* handle miss: match amongst siblings */ |
182 | /* handle miss: match amongst siblings */ |
182 | if (!tmp) { |
183 | if (!tmp) { |
- | 184 | if (next <= last) { |
|
- | 185 | /* there are unprocessed components */ |
|
- | 186 | ipc_answer_0(rid, ENOENT); |
|
- | 187 | return; |
|
- | 188 | } |
|
- | 189 | /* miss in the last component */ |
|
183 | if ((next > last) && (lflag & L_CREATE)) { |
190 | if (lflag & (L_CREATE | L_LINK)) { |
184 | /* no components left and L_CREATE specified */ |
191 | /* request to create a new link */ |
185 | if (!ops->is_directory(cur)) { |
192 | if (!ops->is_directory(cur)) { |
186 | ipc_answer_0(rid, ENOTDIR); |
193 | ipc_answer_0(rid, ENOTDIR); |
187 | return; |
194 | return; |
188 | } |
195 | } |
- | 196 | void *nodep; |
|
- | 197 | if (lflag & L_CREATE) |
|
189 | void *nodep = ops->create(lflag); |
198 | nodep = ops->create(lflag); |
- | 199 | else |
|
- | 200 | nodep = ops->node_get(fs_handle, |
|
- | 201 | dev_handle, index); |
|
190 | if (nodep) { |
202 | if (nodep) { |
191 | if (!ops->link(cur, nodep, component)) { |
203 | if (!ops->link(cur, nodep, component)) { |
- | 204 | if (lflag & L_CREATE) |
|
192 | ops->destroy(nodep); |
205 | ops->destroy(nodep); |
193 | ipc_answer_0(rid, ENOSPC); |
206 | ipc_answer_0(rid, ENOSPC); |
194 | } else { |
207 | } else { |
195 | ipc_answer_5(rid, EOK, |
208 | ipc_answer_5(rid, EOK, |
196 | fs_handle, dev_handle, |
209 | fs_handle, dev_handle, |
197 | ops->index_get(nodep), 0, |
210 | ops->index_get(nodep), |
- | 211 | ops->size_get(nodep), |
|
198 | ops->lnkcnt_get(nodep)); |
212 | ops->lnkcnt_get(nodep)); |
199 | } |
213 | } |
200 | } else { |
214 | } else { |
201 | ipc_answer_0(rid, ENOSPC); |
215 | ipc_answer_0(rid, ENOSPC); |
202 | } |
216 | } |
203 | return; |
217 | return; |
- | 218 | } else if (lflag & L_PARENT) { |
|
- | 219 | /* return parent */ |
|
- | 220 | ipc_answer_5(rid, EOK, fs_handle, dev_handle, |
|
- | 221 | ops->index_get(cur), ops->size_get(cur), |
|
- | 222 | ops->lnkcnt_get(cur)); |
|
204 | } |
223 | } |
205 | ipc_answer_0(rid, ENOENT); |
224 | ipc_answer_0(rid, ENOENT); |
206 | return; |
225 | return; |
207 | } |
226 | } |
208 | 227 | ||
209 | /* descend one level */ |
228 | /* descend one level */ |
Line 212... | Line 231... | ||
212 | tmp = ops->child_get(tmp); |
231 | tmp = ops->child_get(tmp); |
213 | } |
232 | } |
214 | 233 | ||
215 | /* handle miss: excessive components */ |
234 | /* handle miss: excessive components */ |
216 | if (!tmp && next <= last) { |
235 | if (!tmp && next <= last) { |
217 | if (lflag & L_CREATE) { |
236 | if (lflag & (L_CREATE | L_LINK)) { |
218 | if (!ops->is_directory(cur)) { |
237 | if (!ops->is_directory(cur)) { |
219 | ipc_answer_0(rid, ENOTDIR); |
238 | ipc_answer_0(rid, ENOTDIR); |
220 | return; |
239 | return; |
221 | } |
240 | } |
222 | 241 | ||
Line 237... | Line 256... | ||
237 | } |
256 | } |
238 | assert(len); |
257 | assert(len); |
239 | component[len] = '\0'; |
258 | component[len] = '\0'; |
240 | len = 0; |
259 | len = 0; |
241 | 260 | ||
- | 261 | void *nodep; |
|
- | 262 | if (lflag & L_CREATE) |
|
242 | void *nodep = ops->create(lflag); |
263 | nodep = ops->create(lflag); |
- | 264 | else |
|
- | 265 | nodep = ops->node_get(fs_handle, dev_handle, |
|
- | 266 | index); |
|
243 | if (nodep) { |
267 | if (nodep) { |
244 | if (!ops->link(cur, nodep, component)) { |
268 | if (!ops->link(cur, nodep, component)) { |
- | 269 | if (lflag & L_CREATE) |
|
245 | ops->destroy(nodep); |
270 | ops->destroy(nodep); |
246 | ipc_answer_0(rid, ENOSPC); |
271 | ipc_answer_0(rid, ENOSPC); |
247 | } else { |
272 | } else { |
248 | ipc_answer_5(rid, EOK, |
273 | ipc_answer_5(rid, EOK, |
249 | fs_handle, dev_handle, |
274 | fs_handle, dev_handle, |
250 | ops->index_get(nodep), 0, |
275 | ops->index_get(nodep), |
- | 276 | ops->size_get(nodep), |
|
251 | ops->lnkcnt_get(nodep)); |
277 | ops->lnkcnt_get(nodep)); |
252 | } |
278 | } |
253 | } else { |
279 | } else { |
254 | ipc_answer_0(rid, ENOSPC); |
280 | ipc_answer_0(rid, ENOSPC); |
255 | } |
281 | } |
Line 258... | Line 284... | ||
258 | ipc_answer_0(rid, ENOENT); |
284 | ipc_answer_0(rid, ENOENT); |
259 | return; |
285 | return; |
260 | } |
286 | } |
261 | 287 | ||
262 | /* handle hit */ |
288 | /* handle hit */ |
263 | if (lflag & L_DESTROY) { |
289 | if (lflag & L_PARENT) { |
- | 290 | cur = par; |
|
- | 291 | if (!cur) { |
|
- | 292 | ipc_answer_0(rid, ENOENT); |
|
- | 293 | return; |
|
- | 294 | } |
|
- | 295 | } |
|
- | 296 | if (lflag & L_UNLINK) { |
|
264 | unsigned old_lnkcnt = ops->lnkcnt_get(cur); |
297 | unsigned old_lnkcnt = ops->lnkcnt_get(cur); |
265 | int res = ops->unlink(par, cur); |
298 | int res = ops->unlink(par, cur); |
266 | ipc_answer_5(rid, (ipcarg_t)res, fs_handle, dev_handle, |
299 | ipc_answer_5(rid, (ipcarg_t)res, fs_handle, dev_handle, |
267 | ops->index_get(cur), ops->size_get(cur), old_lnkcnt); |
300 | ops->index_get(cur), ops->size_get(cur), old_lnkcnt); |
268 | return; |
301 | return; |
269 | } |
302 | } |
270 | if ((lflag & (L_CREATE | L_EXCLUSIVE)) == (L_CREATE | L_EXCLUSIVE)) { |
303 | if (((lflag & (L_CREATE | L_EXCLUSIVE)) == (L_CREATE | L_EXCLUSIVE)) || |
- | 304 | (lflag & L_LINK)) { |
|
271 | ipc_answer_0(rid, EEXIST); |
305 | ipc_answer_0(rid, EEXIST); |
272 | return; |
306 | return; |
273 | } |
307 | } |
274 | if ((lflag & L_FILE) && (ops->is_directory(cur))) { |
308 | if ((lflag & L_FILE) && (ops->is_directory(cur))) { |
275 | ipc_answer_0(rid, EISDIR); |
309 | ipc_answer_0(rid, EISDIR); |