Rev 2734 | Rev 2741 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
2671 | jermar | 1 | /* |
2684 | jermar | 2 | * Copyright (c) 2008 Jakub Jermar |
2671 | jermar | 3 | * All rights reserved. |
4 | * |
||
5 | * Redistribution and use in source and binary forms, with or without |
||
6 | * modification, are permitted provided that the following conditions |
||
7 | * are met: |
||
8 | * |
||
9 | * - Redistributions of source code must retain the above copyright |
||
10 | * notice, this list of conditions and the following disclaimer. |
||
11 | * - Redistributions in binary form must reproduce the above copyright |
||
12 | * notice, this list of conditions and the following disclaimer in the |
||
13 | * documentation and/or other materials provided with the distribution. |
||
14 | * - The name of the author may not be used to endorse or promote products |
||
15 | * derived from this software without specific prior written permission. |
||
16 | * |
||
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
27 | */ |
||
28 | |||
29 | /** @addtogroup libc |
||
30 | * @{ |
||
31 | */ |
||
32 | /** @file |
||
33 | */ |
||
34 | |||
35 | #include <vfs.h> |
||
2694 | jermar | 36 | #include <stdlib.h> |
2674 | jermar | 37 | #include <unistd.h> |
2694 | jermar | 38 | #include <dirent.h> |
2674 | jermar | 39 | #include <fcntl.h> |
2707 | jermar | 40 | #include <sys/stat.h> |
41 | #include <sys/types.h> |
||
2671 | jermar | 42 | #include <ipc/ipc.h> |
43 | #include <ipc/services.h> |
||
44 | #include <async.h> |
||
45 | #include <atomic.h> |
||
46 | #include <futex.h> |
||
47 | #include <errno.h> |
||
48 | #include <string.h> |
||
49 | #include "../../srv/vfs/vfs.h" |
||
50 | |||
51 | int vfs_phone = -1; |
||
52 | atomic_t vfs_phone_futex = FUTEX_INITIALIZER; |
||
53 | |||
54 | static int vfs_connect(void) |
||
55 | { |
||
56 | if (vfs_phone < 0) |
||
57 | vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0); |
||
58 | return vfs_phone; |
||
59 | } |
||
60 | |||
61 | int mount(const char *fs_name, const char *mp, const char *dev) |
||
62 | { |
||
63 | int res; |
||
64 | ipcarg_t rc; |
||
65 | aid_t req; |
||
66 | |||
67 | int dev_handle = 0; /* TODO */ |
||
68 | |||
69 | futex_down(&vfs_phone_futex); |
||
70 | async_serialize_start(); |
||
71 | if (vfs_phone < 0) { |
||
72 | res = vfs_connect(); |
||
73 | if (res < 0) { |
||
74 | async_serialize_end(); |
||
75 | futex_up(&vfs_phone_futex); |
||
76 | return res; |
||
77 | } |
||
78 | } |
||
79 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
||
2678 | jermar | 80 | rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name)); |
2671 | jermar | 81 | if (rc != EOK) { |
82 | async_wait_for(req, NULL); |
||
83 | async_serialize_end(); |
||
84 | futex_up(&vfs_phone_futex); |
||
85 | return (int) rc; |
||
86 | } |
||
2678 | jermar | 87 | rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp)); |
2671 | jermar | 88 | if (rc != EOK) { |
89 | async_wait_for(req, NULL); |
||
90 | async_serialize_end(); |
||
91 | futex_up(&vfs_phone_futex); |
||
92 | return (int) rc; |
||
93 | } |
||
94 | async_wait_for(req, &rc); |
||
95 | async_serialize_end(); |
||
96 | futex_up(&vfs_phone_futex); |
||
97 | return (int) rc; |
||
98 | } |
||
99 | |||
2700 | jermar | 100 | static int _open(const char *path, int lflag, int oflag, ...) |
2671 | jermar | 101 | { |
102 | int res; |
||
103 | ipcarg_t rc; |
||
104 | ipc_call_t answer; |
||
105 | aid_t req; |
||
106 | |||
107 | futex_down(&vfs_phone_futex); |
||
108 | async_serialize_start(); |
||
109 | if (vfs_phone < 0) { |
||
110 | res = vfs_connect(); |
||
111 | if (res < 0) { |
||
112 | async_serialize_end(); |
||
113 | futex_up(&vfs_phone_futex); |
||
114 | return res; |
||
115 | } |
||
116 | } |
||
2700 | jermar | 117 | req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer); |
2693 | jermar | 118 | rc = ipc_data_write_start(vfs_phone, path, strlen(path)); |
2671 | jermar | 119 | if (rc != EOK) { |
120 | async_wait_for(req, NULL); |
||
121 | async_serialize_end(); |
||
122 | futex_up(&vfs_phone_futex); |
||
123 | return (int) rc; |
||
124 | } |
||
125 | async_wait_for(req, &rc); |
||
126 | async_serialize_end(); |
||
127 | futex_up(&vfs_phone_futex); |
||
128 | return (int) IPC_GET_ARG1(answer); |
||
129 | } |
||
130 | |||
2700 | jermar | 131 | int open(const char *path, int oflag, ...) |
132 | { |
||
133 | return _open(path, L_FILE, oflag); |
||
134 | } |
||
135 | |||
2707 | jermar | 136 | int close(int fildes) |
137 | { |
||
2734 | jermar | 138 | int res; |
139 | ipcarg_t rc; |
||
140 | |||
141 | futex_down(&vfs_phone_futex); |
||
142 | async_serialize_start(); |
||
143 | if (vfs_phone < 0) { |
||
144 | res = vfs_connect(); |
||
145 | if (res < 0) { |
||
146 | async_serialize_end(); |
||
147 | futex_up(&vfs_phone_futex); |
||
148 | return res; |
||
149 | } |
||
150 | } |
||
151 | |||
152 | rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes); |
||
153 | |||
154 | async_serialize_end(); |
||
155 | futex_up(&vfs_phone_futex); |
||
156 | |||
157 | return (int)rc; |
||
2707 | jermar | 158 | } |
159 | |||
2671 | jermar | 160 | ssize_t read(int fildes, void *buf, size_t nbyte) |
161 | { |
||
162 | int res; |
||
163 | ipcarg_t rc; |
||
164 | ipc_call_t answer; |
||
165 | aid_t req; |
||
166 | |||
167 | futex_down(&vfs_phone_futex); |
||
168 | async_serialize_start(); |
||
169 | if (vfs_phone < 0) { |
||
170 | res = vfs_connect(); |
||
171 | if (res < 0) { |
||
172 | async_serialize_end(); |
||
173 | futex_up(&vfs_phone_futex); |
||
174 | return res; |
||
175 | } |
||
176 | } |
||
2674 | jermar | 177 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
2678 | jermar | 178 | if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) { |
2671 | jermar | 179 | async_wait_for(req, NULL); |
180 | async_serialize_end(); |
||
181 | futex_up(&vfs_phone_futex); |
||
182 | return (ssize_t) rc; |
||
183 | } |
||
184 | async_wait_for(req, &rc); |
||
185 | async_serialize_end(); |
||
186 | futex_up(&vfs_phone_futex); |
||
2710 | jermar | 187 | if (rc == EOK) |
188 | return (ssize_t) IPC_GET_ARG1(answer); |
||
189 | else |
||
190 | return -1; |
||
2671 | jermar | 191 | } |
192 | |||
2674 | jermar | 193 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
194 | { |
||
195 | int res; |
||
196 | ipcarg_t rc; |
||
197 | ipc_call_t answer; |
||
198 | aid_t req; |
||
199 | |||
200 | futex_down(&vfs_phone_futex); |
||
201 | async_serialize_start(); |
||
202 | if (vfs_phone < 0) { |
||
203 | res = vfs_connect(); |
||
204 | if (res < 0) { |
||
205 | async_serialize_end(); |
||
206 | futex_up(&vfs_phone_futex); |
||
207 | return res; |
||
208 | } |
||
209 | } |
||
210 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
||
2678 | jermar | 211 | if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) { |
2674 | jermar | 212 | async_wait_for(req, NULL); |
213 | async_serialize_end(); |
||
214 | futex_up(&vfs_phone_futex); |
||
215 | return (ssize_t) rc; |
||
216 | } |
||
217 | async_wait_for(req, &rc); |
||
218 | async_serialize_end(); |
||
219 | futex_up(&vfs_phone_futex); |
||
2710 | jermar | 220 | if (rc == EOK) |
221 | return (ssize_t) IPC_GET_ARG1(answer); |
||
222 | else |
||
223 | return -1; |
||
2674 | jermar | 224 | } |
2684 | jermar | 225 | |
226 | off_t lseek(int fildes, off_t offset, int whence) |
||
227 | { |
||
228 | int res; |
||
229 | ipcarg_t rc; |
||
230 | |||
231 | futex_down(&vfs_phone_futex); |
||
232 | async_serialize_start(); |
||
233 | if (vfs_phone < 0) { |
||
234 | res = vfs_connect(); |
||
235 | if (res < 0) { |
||
236 | async_serialize_end(); |
||
237 | futex_up(&vfs_phone_futex); |
||
238 | return res; |
||
239 | } |
||
240 | } |
||
241 | |||
242 | off_t newoffs; |
||
243 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
||
2707 | jermar | 244 | (ipcarg_t)&newoffs); |
2684 | jermar | 245 | |
246 | async_serialize_end(); |
||
247 | futex_up(&vfs_phone_futex); |
||
248 | |||
249 | if (rc != EOK) |
||
250 | return (off_t) -1; |
||
251 | |||
252 | return newoffs; |
||
253 | } |
||
254 | |||
2693 | jermar | 255 | int ftruncate(int fildes, off_t length) |
256 | { |
||
257 | int res; |
||
258 | ipcarg_t rc; |
||
259 | |||
260 | futex_down(&vfs_phone_futex); |
||
261 | async_serialize_start(); |
||
262 | if (vfs_phone < 0) { |
||
263 | res = vfs_connect(); |
||
264 | if (res < 0) { |
||
265 | async_serialize_end(); |
||
266 | futex_up(&vfs_phone_futex); |
||
267 | return res; |
||
268 | } |
||
269 | } |
||
270 | rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length); |
||
271 | async_serialize_end(); |
||
272 | futex_up(&vfs_phone_futex); |
||
273 | return (int) rc; |
||
274 | } |
||
275 | |||
2694 | jermar | 276 | DIR *opendir(const char *dirname) |
277 | { |
||
278 | DIR *dirp = malloc(sizeof(DIR)); |
||
279 | if (!dirp) |
||
280 | return NULL; |
||
2700 | jermar | 281 | dirp->fd = _open(dirname, L_DIRECTORY, 0); |
2699 | jermar | 282 | if (dirp->fd < 0) { |
2694 | jermar | 283 | free(dirp); |
284 | return NULL; |
||
285 | } |
||
286 | return dirp; |
||
287 | } |
||
288 | |||
289 | struct dirent *readdir(DIR *dirp) |
||
290 | { |
||
2699 | jermar | 291 | ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1); |
292 | if (len <= 0) |
||
293 | return NULL; |
||
294 | return &dirp->res; |
||
2694 | jermar | 295 | } |
296 | |||
297 | void rewinddir(DIR *dirp) |
||
298 | { |
||
2699 | jermar | 299 | (void) lseek(dirp->fd, 0, SEEK_SET); |
2694 | jermar | 300 | } |
301 | |||
302 | int closedir(DIR *dirp) |
||
303 | { |
||
304 | (void) close(dirp->fd); |
||
305 | free(dirp); |
||
306 | return 0; |
||
307 | } |
||
308 | |||
2707 | jermar | 309 | int mkdir(const char *path, mode_t mode) |
2694 | jermar | 310 | { |
2707 | jermar | 311 | int res; |
312 | ipcarg_t rc; |
||
313 | aid_t req; |
||
314 | |||
315 | futex_down(&vfs_phone_futex); |
||
316 | async_serialize_start(); |
||
317 | if (vfs_phone < 0) { |
||
318 | res = vfs_connect(); |
||
319 | if (res < 0) { |
||
320 | async_serialize_end(); |
||
321 | futex_up(&vfs_phone_futex); |
||
322 | return res; |
||
323 | } |
||
324 | } |
||
2735 | jermar | 325 | req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL); |
2707 | jermar | 326 | rc = ipc_data_write_start(vfs_phone, path, strlen(path)); |
327 | if (rc != EOK) { |
||
328 | async_wait_for(req, NULL); |
||
329 | async_serialize_end(); |
||
330 | futex_up(&vfs_phone_futex); |
||
331 | return (int) rc; |
||
332 | } |
||
333 | async_wait_for(req, &rc); |
||
334 | async_serialize_end(); |
||
335 | futex_up(&vfs_phone_futex); |
||
336 | return EOK; |
||
2694 | jermar | 337 | } |
338 | |||
2735 | jermar | 339 | static int _unlink(const char *path, int lflag) |
340 | { |
||
341 | int res; |
||
342 | ipcarg_t rc; |
||
343 | aid_t req; |
||
344 | |||
345 | futex_down(&vfs_phone_futex); |
||
346 | async_serialize_start(); |
||
347 | if (vfs_phone < 0) { |
||
348 | res = vfs_connect(); |
||
349 | if (res < 0) { |
||
350 | async_serialize_end(); |
||
351 | futex_up(&vfs_phone_futex); |
||
352 | return res; |
||
353 | } |
||
354 | } |
||
355 | req = async_send_0(vfs_phone, VFS_UNLINK, NULL); |
||
356 | rc = ipc_data_write_start(vfs_phone, path, strlen(path)); |
||
357 | if (rc != EOK) { |
||
358 | async_wait_for(req, NULL); |
||
359 | async_serialize_end(); |
||
360 | futex_up(&vfs_phone_futex); |
||
361 | return (int) rc; |
||
362 | } |
||
363 | async_wait_for(req, &rc); |
||
364 | async_serialize_end(); |
||
365 | futex_up(&vfs_phone_futex); |
||
366 | return EOK; |
||
367 | } |
||
368 | |||
369 | int unlink(const char *path) |
||
370 | { |
||
371 | return _unlink(path, L_NONE); |
||
372 | } |
||
373 | |||
374 | int rmdir(const char *path) |
||
375 | { |
||
376 | return _unlink(path, L_DIRECTORY); |
||
377 | } |
||
378 | |||
2671 | jermar | 379 | /** @} |
380 | */ |