Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * ncplib_kernel.c | |
3 | * | |
4 | * Copyright (C) 1995, 1996 by Volker Lendecke | |
5 | * Modified for big endian by J.F. Chadima and David S. Miller | |
6 | * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache | |
7 | * Modified 1999 Wolfram Pienkoss for NLS | |
8 | * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info | |
9 | * | |
10 | */ | |
11 | ||
12 | ||
13 | #include <linux/config.h> | |
14 | ||
15 | #include "ncplib_kernel.h" | |
16 | ||
17 | static inline void assert_server_locked(struct ncp_server *server) | |
18 | { | |
19 | if (server->lock == 0) { | |
20 | DPRINTK("ncpfs: server not locked!\n"); | |
21 | } | |
22 | } | |
23 | ||
24 | static void ncp_add_byte(struct ncp_server *server, __u8 x) | |
25 | { | |
26 | assert_server_locked(server); | |
27 | *(__u8 *) (&(server->packet[server->current_size])) = x; | |
28 | server->current_size += 1; | |
29 | return; | |
30 | } | |
31 | ||
32 | static void ncp_add_word(struct ncp_server *server, __le16 x) | |
33 | { | |
34 | assert_server_locked(server); | |
35 | put_unaligned(x, (__le16 *) (&(server->packet[server->current_size]))); | |
36 | server->current_size += 2; | |
37 | return; | |
38 | } | |
39 | ||
40 | static void ncp_add_be16(struct ncp_server *server, __u16 x) | |
41 | { | |
42 | assert_server_locked(server); | |
43 | put_unaligned(cpu_to_be16(x), (__be16 *) (&(server->packet[server->current_size]))); | |
44 | server->current_size += 2; | |
45 | } | |
46 | ||
47 | static void ncp_add_dword(struct ncp_server *server, __le32 x) | |
48 | { | |
49 | assert_server_locked(server); | |
50 | put_unaligned(x, (__le32 *) (&(server->packet[server->current_size]))); | |
51 | server->current_size += 4; | |
52 | return; | |
53 | } | |
54 | ||
55 | static void ncp_add_be32(struct ncp_server *server, __u32 x) | |
56 | { | |
57 | assert_server_locked(server); | |
58 | put_unaligned(cpu_to_be32(x), (__be32 *)(&(server->packet[server->current_size]))); | |
59 | server->current_size += 4; | |
60 | } | |
61 | ||
62 | static inline void ncp_add_dword_lh(struct ncp_server *server, __u32 x) { | |
63 | ncp_add_dword(server, cpu_to_le32(x)); | |
64 | } | |
65 | ||
66 | static void ncp_add_mem(struct ncp_server *server, const void *source, int size) | |
67 | { | |
68 | assert_server_locked(server); | |
69 | memcpy(&(server->packet[server->current_size]), source, size); | |
70 | server->current_size += size; | |
71 | return; | |
72 | } | |
73 | ||
74 | static void ncp_add_pstring(struct ncp_server *server, const char *s) | |
75 | { | |
76 | int len = strlen(s); | |
77 | assert_server_locked(server); | |
78 | if (len > 255) { | |
79 | DPRINTK("ncpfs: string too long: %s\n", s); | |
80 | len = 255; | |
81 | } | |
82 | ncp_add_byte(server, len); | |
83 | ncp_add_mem(server, s, len); | |
84 | return; | |
85 | } | |
86 | ||
87 | static inline void ncp_init_request(struct ncp_server *server) | |
88 | { | |
89 | ncp_lock_server(server); | |
90 | ||
91 | server->current_size = sizeof(struct ncp_request_header); | |
92 | server->has_subfunction = 0; | |
93 | } | |
94 | ||
95 | static inline void ncp_init_request_s(struct ncp_server *server, int subfunction) | |
96 | { | |
97 | ncp_lock_server(server); | |
98 | ||
99 | server->current_size = sizeof(struct ncp_request_header) + 2; | |
100 | ncp_add_byte(server, subfunction); | |
101 | ||
102 | server->has_subfunction = 1; | |
103 | } | |
104 | ||
105 | static inline char * | |
106 | ncp_reply_data(struct ncp_server *server, int offset) | |
107 | { | |
108 | return &(server->packet[sizeof(struct ncp_reply_header) + offset]); | |
109 | } | |
110 | ||
111 | static inline __u8 BVAL(void* data) | |
112 | { | |
113 | return get_unaligned((__u8*)data); | |
114 | } | |
115 | ||
116 | static __u8 | |
117 | ncp_reply_byte(struct ncp_server *server, int offset) | |
118 | { | |
119 | return get_unaligned((__u8 *) ncp_reply_data(server, offset)); | |
120 | } | |
121 | ||
122 | static inline __u16 WVAL_LH(void* data) | |
123 | { | |
124 | return le16_to_cpu(get_unaligned((__le16*)data)); | |
125 | } | |
126 | ||
127 | static __u16 | |
128 | ncp_reply_le16(struct ncp_server *server, int offset) | |
129 | { | |
130 | return le16_to_cpu(get_unaligned((__le16 *) ncp_reply_data(server, offset))); | |
131 | } | |
132 | ||
133 | static __u16 | |
134 | ncp_reply_be16(struct ncp_server *server, int offset) | |
135 | { | |
136 | return be16_to_cpu(get_unaligned((__be16 *) ncp_reply_data(server, offset))); | |
137 | } | |
138 | ||
139 | static inline __u32 DVAL_LH(void* data) | |
140 | { | |
141 | return le32_to_cpu(get_unaligned((__le32*)data)); | |
142 | } | |
143 | ||
144 | static __le32 | |
145 | ncp_reply_dword(struct ncp_server *server, int offset) | |
146 | { | |
147 | return get_unaligned((__le32 *) ncp_reply_data(server, offset)); | |
148 | } | |
149 | ||
150 | static inline __u32 ncp_reply_dword_lh(struct ncp_server* server, int offset) { | |
151 | return le32_to_cpu(ncp_reply_dword(server, offset)); | |
152 | } | |
153 | ||
154 | int | |
155 | ncp_negotiate_buffersize(struct ncp_server *server, int size, int *target) | |
156 | { | |
157 | int result; | |
158 | ||
159 | ncp_init_request(server); | |
160 | ncp_add_be16(server, size); | |
161 | ||
162 | if ((result = ncp_request(server, 33)) != 0) { | |
163 | ncp_unlock_server(server); | |
164 | return result; | |
165 | } | |
166 | *target = min_t(unsigned int, ncp_reply_be16(server, 0), size); | |
167 | ||
168 | ncp_unlock_server(server); | |
169 | return 0; | |
170 | } | |
171 | ||
172 | ||
173 | /* options: | |
174 | * bit 0 ipx checksum | |
175 | * bit 1 packet signing | |
176 | */ | |
177 | int | |
178 | ncp_negotiate_size_and_options(struct ncp_server *server, | |
179 | int size, int options, int *ret_size, int *ret_options) { | |
180 | int result; | |
181 | ||
182 | /* there is minimum */ | |
183 | if (size < NCP_BLOCK_SIZE) size = NCP_BLOCK_SIZE; | |
184 | ||
185 | ncp_init_request(server); | |
186 | ncp_add_be16(server, size); | |
187 | ncp_add_byte(server, options); | |
188 | ||
189 | if ((result = ncp_request(server, 0x61)) != 0) | |
190 | { | |
191 | ncp_unlock_server(server); | |
192 | return result; | |
193 | } | |
194 | ||
195 | /* NCP over UDP returns 0 (!!!) */ | |
196 | result = ncp_reply_be16(server, 0); | |
197 | if (result >= NCP_BLOCK_SIZE) | |
198 | size = min(result, size); | |
199 | *ret_size = size; | |
200 | *ret_options = ncp_reply_byte(server, 4); | |
201 | ||
202 | ncp_unlock_server(server); | |
203 | return 0; | |
204 | } | |
205 | ||
206 | int ncp_get_volume_info_with_number(struct ncp_server* server, | |
207 | int n, struct ncp_volume_info* target) { | |
208 | int result; | |
209 | int len; | |
210 | ||
211 | ncp_init_request_s(server, 44); | |
212 | ncp_add_byte(server, n); | |
213 | ||
214 | if ((result = ncp_request(server, 22)) != 0) { | |
215 | goto out; | |
216 | } | |
217 | target->total_blocks = ncp_reply_dword_lh(server, 0); | |
218 | target->free_blocks = ncp_reply_dword_lh(server, 4); | |
219 | target->purgeable_blocks = ncp_reply_dword_lh(server, 8); | |
220 | target->not_yet_purgeable_blocks = ncp_reply_dword_lh(server, 12); | |
221 | target->total_dir_entries = ncp_reply_dword_lh(server, 16); | |
222 | target->available_dir_entries = ncp_reply_dword_lh(server, 20); | |
223 | target->sectors_per_block = ncp_reply_byte(server, 28); | |
224 | ||
225 | memset(&(target->volume_name), 0, sizeof(target->volume_name)); | |
226 | ||
227 | result = -EIO; | |
228 | len = ncp_reply_byte(server, 29); | |
229 | if (len > NCP_VOLNAME_LEN) { | |
230 | DPRINTK("ncpfs: volume name too long: %d\n", len); | |
231 | goto out; | |
232 | } | |
233 | memcpy(&(target->volume_name), ncp_reply_data(server, 30), len); | |
234 | result = 0; | |
235 | out: | |
236 | ncp_unlock_server(server); | |
237 | return result; | |
238 | } | |
239 | ||
240 | int ncp_get_directory_info(struct ncp_server* server, __u8 n, | |
241 | struct ncp_volume_info* target) { | |
242 | int result; | |
243 | int len; | |
244 | ||
245 | ncp_init_request_s(server, 45); | |
246 | ncp_add_byte(server, n); | |
247 | ||
248 | if ((result = ncp_request(server, 22)) != 0) { | |
249 | goto out; | |
250 | } | |
251 | target->total_blocks = ncp_reply_dword_lh(server, 0); | |
252 | target->free_blocks = ncp_reply_dword_lh(server, 4); | |
253 | target->purgeable_blocks = 0; | |
254 | target->not_yet_purgeable_blocks = 0; | |
255 | target->total_dir_entries = ncp_reply_dword_lh(server, 8); | |
256 | target->available_dir_entries = ncp_reply_dword_lh(server, 12); | |
257 | target->sectors_per_block = ncp_reply_byte(server, 20); | |
258 | ||
259 | memset(&(target->volume_name), 0, sizeof(target->volume_name)); | |
260 | ||
261 | result = -EIO; | |
262 | len = ncp_reply_byte(server, 21); | |
263 | if (len > NCP_VOLNAME_LEN) { | |
264 | DPRINTK("ncpfs: volume name too long: %d\n", len); | |
265 | goto out; | |
266 | } | |
267 | memcpy(&(target->volume_name), ncp_reply_data(server, 22), len); | |
268 | result = 0; | |
269 | out: | |
270 | ncp_unlock_server(server); | |
271 | return result; | |
272 | } | |
273 | ||
274 | int | |
275 | ncp_close_file(struct ncp_server *server, const char *file_id) | |
276 | { | |
277 | int result; | |
278 | ||
279 | ncp_init_request(server); | |
280 | ncp_add_byte(server, 0); | |
281 | ncp_add_mem(server, file_id, 6); | |
282 | ||
283 | result = ncp_request(server, 66); | |
284 | ncp_unlock_server(server); | |
285 | return result; | |
286 | } | |
287 | ||
288 | int | |
289 | ncp_make_closed(struct inode *inode) | |
290 | { | |
291 | int err; | |
292 | ||
293 | err = 0; | |
294 | down(&NCP_FINFO(inode)->open_sem); | |
295 | if (atomic_read(&NCP_FINFO(inode)->opened) == 1) { | |
296 | atomic_set(&NCP_FINFO(inode)->opened, 0); | |
297 | err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle); | |
298 | ||
299 | if (!err) | |
300 | PPRINTK("ncp_make_closed: volnum=%d, dirent=%u, error=%d\n", | |
301 | NCP_FINFO(inode)->volNumber, | |
302 | NCP_FINFO(inode)->dirEntNum, err); | |
303 | } | |
304 | up(&NCP_FINFO(inode)->open_sem); | |
305 | return err; | |
306 | } | |
307 | ||
308 | static void ncp_add_handle_path(struct ncp_server *server, __u8 vol_num, | |
309 | __le32 dir_base, int have_dir_base, | |
310 | const char *path) | |
311 | { | |
312 | ncp_add_byte(server, vol_num); | |
313 | ncp_add_dword(server, dir_base); | |
314 | if (have_dir_base != 0) { | |
315 | ncp_add_byte(server, 1); /* dir_base */ | |
316 | } else { | |
317 | ncp_add_byte(server, 0xff); /* no handle */ | |
318 | } | |
319 | if (path != NULL) { | |
320 | ncp_add_byte(server, 1); /* 1 component */ | |
321 | ncp_add_pstring(server, path); | |
322 | } else { | |
323 | ncp_add_byte(server, 0); | |
324 | } | |
325 | } | |
326 | ||
327 | int ncp_dirhandle_alloc(struct ncp_server* server, __u8 volnum, __le32 dirent, | |
328 | __u8* dirhandle) { | |
329 | int result; | |
330 | ||
331 | ncp_init_request(server); | |
332 | ncp_add_byte(server, 12); /* subfunction */ | |
333 | ncp_add_byte(server, NW_NS_DOS); | |
334 | ncp_add_byte(server, 0); | |
335 | ncp_add_word(server, 0); | |
336 | ncp_add_handle_path(server, volnum, dirent, 1, NULL); | |
337 | if ((result = ncp_request(server, 87)) == 0) { | |
338 | *dirhandle = ncp_reply_byte(server, 0); | |
339 | } | |
340 | ncp_unlock_server(server); | |
341 | return result; | |
342 | } | |
343 | ||
344 | int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) { | |
345 | int result; | |
346 | ||
347 | ncp_init_request_s(server, 20); | |
348 | ncp_add_byte(server, dirhandle); | |
349 | result = ncp_request(server, 22); | |
350 | ncp_unlock_server(server); | |
351 | return result; | |
352 | } | |
353 | ||
354 | void ncp_extract_file_info(void *structure, struct nw_info_struct *target) | |
355 | { | |
356 | __u8 *name_len; | |
357 | const int info_struct_size = offsetof(struct nw_info_struct, nameLen); | |
358 | ||
359 | memcpy(target, structure, info_struct_size); | |
360 | name_len = structure + info_struct_size; | |
361 | target->nameLen = *name_len; | |
362 | memcpy(target->entryName, name_len + 1, *name_len); | |
363 | target->entryName[*name_len] = '\0'; | |
364 | target->volNumber = le32_to_cpu(target->volNumber); | |
365 | return; | |
366 | } | |
367 | ||
368 | #ifdef CONFIG_NCPFS_NFS_NS | |
369 | static inline void ncp_extract_nfs_info(unsigned char *structure, | |
370 | struct nw_nfs_info *target) | |
371 | { | |
372 | target->mode = DVAL_LH(structure); | |
373 | target->rdev = DVAL_LH(structure + 8); | |
374 | } | |
375 | #endif | |
376 | ||
377 | int ncp_obtain_nfs_info(struct ncp_server *server, | |
378 | struct nw_info_struct *target) | |
379 | ||
380 | { | |
381 | int result = 0; | |
382 | #ifdef CONFIG_NCPFS_NFS_NS | |
383 | __u32 volnum = target->volNumber; | |
384 | ||
385 | if (ncp_is_nfs_extras(server, volnum)) { | |
386 | ncp_init_request(server); | |
387 | ncp_add_byte(server, 19); /* subfunction */ | |
388 | ncp_add_byte(server, server->name_space[volnum]); | |
389 | ncp_add_byte(server, NW_NS_NFS); | |
390 | ncp_add_byte(server, 0); | |
391 | ncp_add_byte(server, volnum); | |
392 | ncp_add_dword(server, target->dirEntNum); | |
393 | /* We must retrieve both nlinks and rdev, otherwise some server versions | |
394 | report zeroes instead of valid data */ | |
395 | ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); | |
396 | ||
397 | if ((result = ncp_request(server, 87)) == 0) { | |
398 | ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs); | |
399 | DPRINTK(KERN_DEBUG | |
400 | "ncp_obtain_nfs_info: (%s) mode=0%o, rdev=0x%x\n", | |
401 | target->entryName, target->nfs.mode, | |
402 | target->nfs.rdev); | |
403 | } else { | |
404 | target->nfs.mode = 0; | |
405 | target->nfs.rdev = 0; | |
406 | } | |
407 | ncp_unlock_server(server); | |
408 | ||
409 | } else | |
410 | #endif | |
411 | { | |
412 | target->nfs.mode = 0; | |
413 | target->nfs.rdev = 0; | |
414 | } | |
415 | return result; | |
416 | } | |
417 | ||
418 | /* | |
419 | * Returns information for a (one-component) name relative to | |
420 | * the specified directory. | |
421 | */ | |
422 | int ncp_obtain_info(struct ncp_server *server, struct inode *dir, char *path, | |
423 | struct nw_info_struct *target) | |
424 | { | |
425 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
426 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
427 | int result; | |
428 | ||
429 | if (target == NULL) { | |
430 | printk(KERN_ERR "ncp_obtain_info: invalid call\n"); | |
431 | return -EINVAL; | |
432 | } | |
433 | ncp_init_request(server); | |
434 | ncp_add_byte(server, 6); /* subfunction */ | |
435 | ncp_add_byte(server, server->name_space[volnum]); | |
436 | ncp_add_byte(server, server->name_space[volnum]); /* N.B. twice ?? */ | |
437 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ | |
438 | ncp_add_dword(server, RIM_ALL); | |
439 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
440 | ||
441 | if ((result = ncp_request(server, 87)) != 0) | |
442 | goto out; | |
443 | ncp_extract_file_info(ncp_reply_data(server, 0), target); | |
444 | ncp_unlock_server(server); | |
445 | ||
446 | result = ncp_obtain_nfs_info(server, target); | |
447 | return result; | |
448 | ||
449 | out: | |
450 | ncp_unlock_server(server); | |
451 | return result; | |
452 | } | |
453 | ||
454 | #ifdef CONFIG_NCPFS_NFS_NS | |
455 | static int | |
456 | ncp_obtain_DOS_dir_base(struct ncp_server *server, | |
457 | __u8 volnum, __le32 dirent, | |
458 | char *path, /* At most 1 component */ | |
459 | __le32 *DOS_dir_base) | |
460 | { | |
461 | int result; | |
462 | ||
463 | ncp_init_request(server); | |
464 | ncp_add_byte(server, 6); /* subfunction */ | |
465 | ncp_add_byte(server, server->name_space[volnum]); | |
466 | ncp_add_byte(server, server->name_space[volnum]); | |
467 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ | |
468 | ncp_add_dword(server, RIM_DIRECTORY); | |
469 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
470 | ||
471 | if ((result = ncp_request(server, 87)) == 0) | |
472 | { | |
473 | if (DOS_dir_base) *DOS_dir_base=ncp_reply_dword(server, 0x34); | |
474 | } | |
475 | ncp_unlock_server(server); | |
476 | return result; | |
477 | } | |
478 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
479 | ||
480 | static inline int | |
481 | ncp_get_known_namespace(struct ncp_server *server, __u8 volume) | |
482 | { | |
483 | #if defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) | |
484 | int result; | |
485 | __u8 *namespace; | |
486 | __u16 no_namespaces; | |
487 | ||
488 | ncp_init_request(server); | |
489 | ncp_add_byte(server, 24); /* Subfunction: Get Name Spaces Loaded */ | |
490 | ncp_add_word(server, 0); | |
491 | ncp_add_byte(server, volume); | |
492 | ||
493 | if ((result = ncp_request(server, 87)) != 0) { | |
494 | ncp_unlock_server(server); | |
495 | return NW_NS_DOS; /* not result ?? */ | |
496 | } | |
497 | ||
498 | result = NW_NS_DOS; | |
499 | no_namespaces = ncp_reply_le16(server, 0); | |
500 | namespace = ncp_reply_data(server, 2); | |
501 | ||
502 | while (no_namespaces > 0) { | |
503 | DPRINTK("get_namespaces: found %d on %d\n", *namespace, volume); | |
504 | ||
505 | #ifdef CONFIG_NCPFS_NFS_NS | |
506 | if ((*namespace == NW_NS_NFS) && !(server->m.flags&NCP_MOUNT_NO_NFS)) | |
507 | { | |
508 | result = NW_NS_NFS; | |
509 | break; | |
510 | } | |
511 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
512 | #ifdef CONFIG_NCPFS_OS2_NS | |
513 | if ((*namespace == NW_NS_OS2) && !(server->m.flags&NCP_MOUNT_NO_OS2)) | |
514 | { | |
515 | result = NW_NS_OS2; | |
516 | } | |
517 | #endif /* CONFIG_NCPFS_OS2_NS */ | |
518 | namespace += 1; | |
519 | no_namespaces -= 1; | |
520 | } | |
521 | ncp_unlock_server(server); | |
522 | return result; | |
523 | #else /* neither OS2 nor NFS - only DOS */ | |
524 | return NW_NS_DOS; | |
525 | #endif /* defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) */ | |
526 | } | |
527 | ||
528 | static int | |
529 | ncp_ObtainSpecificDirBase(struct ncp_server *server, | |
530 | __u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base, | |
531 | char *path, /* At most 1 component */ | |
532 | __le32 *dirEntNum, __le32 *DosDirNum) | |
533 | { | |
534 | int result; | |
535 | ||
536 | ncp_init_request(server); | |
537 | ncp_add_byte(server, 6); /* subfunction */ | |
538 | ncp_add_byte(server, nsSrc); | |
539 | ncp_add_byte(server, nsDst); | |
540 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ | |
541 | ncp_add_dword(server, RIM_ALL); | |
542 | ncp_add_handle_path(server, vol_num, dir_base, 1, path); | |
543 | ||
544 | if ((result = ncp_request(server, 87)) != 0) | |
545 | { | |
546 | ncp_unlock_server(server); | |
547 | return result; | |
548 | } | |
549 | ||
550 | if (dirEntNum) | |
551 | *dirEntNum = ncp_reply_dword(server, 0x30); | |
552 | if (DosDirNum) | |
553 | *DosDirNum = ncp_reply_dword(server, 0x34); | |
554 | ncp_unlock_server(server); | |
555 | return 0; | |
556 | } | |
557 | ||
558 | int | |
559 | ncp_mount_subdir(struct ncp_server *server, | |
560 | __u8 volNumber, __u8 srcNS, __le32 dirEntNum, | |
561 | __u32* volume, __le32* newDirEnt, __le32* newDosEnt) | |
562 | { | |
563 | int dstNS; | |
564 | int result; | |
565 | ||
566 | dstNS = ncp_get_known_namespace(server, volNumber); | |
567 | if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber, | |
568 | dirEntNum, NULL, newDirEnt, newDosEnt)) != 0) | |
569 | { | |
570 | return result; | |
571 | } | |
572 | server->name_space[volNumber] = dstNS; | |
573 | *volume = volNumber; | |
574 | server->m.mounted_vol[1] = 0; | |
575 | server->m.mounted_vol[0] = 'X'; | |
576 | return 0; | |
577 | } | |
578 | ||
579 | int | |
580 | ncp_get_volume_root(struct ncp_server *server, const char *volname, | |
581 | __u32* volume, __le32* dirent, __le32* dosdirent) | |
582 | { | |
583 | int result; | |
584 | __u8 volnum; | |
585 | ||
586 | DPRINTK("ncp_get_volume_root: looking up vol %s\n", volname); | |
587 | ||
588 | ncp_init_request(server); | |
589 | ncp_add_byte(server, 22); /* Subfunction: Generate dir handle */ | |
590 | ncp_add_byte(server, 0); /* DOS namespace */ | |
591 | ncp_add_byte(server, 0); /* reserved */ | |
592 | ncp_add_byte(server, 0); /* reserved */ | |
593 | ncp_add_byte(server, 0); /* reserved */ | |
594 | ||
595 | ncp_add_byte(server, 0); /* faked volume number */ | |
596 | ncp_add_dword(server, 0); /* faked dir_base */ | |
597 | ncp_add_byte(server, 0xff); /* Don't have a dir_base */ | |
598 | ncp_add_byte(server, 1); /* 1 path component */ | |
599 | ncp_add_pstring(server, volname); | |
600 | ||
601 | if ((result = ncp_request(server, 87)) != 0) { | |
602 | ncp_unlock_server(server); | |
603 | return result; | |
604 | } | |
605 | *dirent = *dosdirent = ncp_reply_dword(server, 4); | |
606 | volnum = ncp_reply_byte(server, 8); | |
607 | ncp_unlock_server(server); | |
608 | *volume = volnum; | |
609 | ||
610 | server->name_space[volnum] = ncp_get_known_namespace(server, volnum); | |
611 | ||
612 | DPRINTK("lookup_vol: namespace[%d] = %d\n", | |
613 | volnum, server->name_space[volnum]); | |
614 | ||
615 | return 0; | |
616 | } | |
617 | ||
618 | int | |
619 | ncp_lookup_volume(struct ncp_server *server, const char *volname, | |
620 | struct nw_info_struct *target) | |
621 | { | |
622 | int result; | |
623 | ||
624 | memset(target, 0, sizeof(*target)); | |
625 | result = ncp_get_volume_root(server, volname, | |
626 | &target->volNumber, &target->dirEntNum, &target->DosDirNum); | |
627 | if (result) { | |
628 | return result; | |
629 | } | |
630 | target->nameLen = strlen(volname); | |
631 | memcpy(target->entryName, volname, target->nameLen+1); | |
632 | target->attributes = aDIR; | |
633 | /* set dates to Jan 1, 1986 00:00 */ | |
634 | target->creationTime = target->modifyTime = cpu_to_le16(0x0000); | |
635 | target->creationDate = target->modifyDate = target->lastAccessDate = cpu_to_le16(0x0C21); | |
636 | target->nfs.mode = 0; | |
637 | return 0; | |
638 | } | |
639 | ||
640 | int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *server, | |
641 | struct inode *dir, | |
642 | const char *path, | |
643 | __le32 info_mask, | |
644 | const struct nw_modify_dos_info *info) | |
645 | { | |
646 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
647 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
648 | int result; | |
649 | ||
650 | ncp_init_request(server); | |
651 | ncp_add_byte(server, 7); /* subfunction */ | |
652 | ncp_add_byte(server, server->name_space[volnum]); | |
653 | ncp_add_byte(server, 0); /* reserved */ | |
654 | ncp_add_word(server, cpu_to_le16(0x8006)); /* search attribs: all */ | |
655 | ||
656 | ncp_add_dword(server, info_mask); | |
657 | ncp_add_mem(server, info, sizeof(*info)); | |
658 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
659 | ||
660 | result = ncp_request(server, 87); | |
661 | ncp_unlock_server(server); | |
662 | return result; | |
663 | } | |
664 | ||
665 | int ncp_modify_file_or_subdir_dos_info(struct ncp_server *server, | |
666 | struct inode *dir, | |
667 | __le32 info_mask, | |
668 | const struct nw_modify_dos_info *info) | |
669 | { | |
670 | return ncp_modify_file_or_subdir_dos_info_path(server, dir, NULL, | |
671 | info_mask, info); | |
672 | } | |
673 | ||
674 | #ifdef CONFIG_NCPFS_NFS_NS | |
675 | int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, | |
676 | __u32 mode, __u32 rdev) | |
677 | ||
678 | { | |
679 | int result = 0; | |
680 | ||
681 | if (server->name_space[volnum] == NW_NS_NFS) { | |
682 | ncp_init_request(server); | |
683 | ncp_add_byte(server, 25); /* subfunction */ | |
684 | ncp_add_byte(server, server->name_space[volnum]); | |
685 | ncp_add_byte(server, NW_NS_NFS); | |
686 | ncp_add_byte(server, volnum); | |
687 | ncp_add_dword(server, dirent); | |
688 | /* we must always operate on both nlinks and rdev, otherwise | |
689 | rdev is not set */ | |
690 | ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); | |
691 | ncp_add_dword_lh(server, mode); | |
692 | ncp_add_dword_lh(server, 1); /* nlinks */ | |
693 | ncp_add_dword_lh(server, rdev); | |
694 | result = ncp_request(server, 87); | |
695 | ncp_unlock_server(server); | |
696 | } | |
697 | return result; | |
698 | } | |
699 | #endif | |
700 | ||
701 | ||
702 | static int | |
703 | ncp_DeleteNSEntry(struct ncp_server *server, | |
704 | __u8 have_dir_base, __u8 volnum, __le32 dirent, | |
705 | char* name, __u8 ns, __le16 attr) | |
706 | { | |
707 | int result; | |
708 | ||
709 | ncp_init_request(server); | |
710 | ncp_add_byte(server, 8); /* subfunction */ | |
711 | ncp_add_byte(server, ns); | |
712 | ncp_add_byte(server, 0); /* reserved */ | |
713 | ncp_add_word(server, attr); /* search attribs: all */ | |
714 | ncp_add_handle_path(server, volnum, dirent, have_dir_base, name); | |
715 | ||
716 | result = ncp_request(server, 87); | |
717 | ncp_unlock_server(server); | |
718 | return result; | |
719 | } | |
720 | ||
721 | int | |
722 | ncp_del_file_or_subdir2(struct ncp_server *server, | |
723 | struct dentry *dentry) | |
724 | { | |
725 | struct inode *inode = dentry->d_inode; | |
726 | __u8 volnum; | |
727 | __le32 dirent; | |
728 | ||
729 | if (!inode) { | |
730 | #ifdef CONFIG_NCPFS_DEBUGDENTRY | |
731 | PRINTK("ncpfs: ncpdel2: dentry->d_inode == NULL\n"); | |
732 | #endif | |
733 | return 0xFF; /* Any error */ | |
734 | } | |
735 | volnum = NCP_FINFO(inode)->volNumber; | |
736 | dirent = NCP_FINFO(inode)->DosDirNum; | |
737 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); | |
738 | } | |
739 | ||
740 | int | |
741 | ncp_del_file_or_subdir(struct ncp_server *server, | |
742 | struct inode *dir, char *name) | |
743 | { | |
744 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
745 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
746 | ||
747 | #ifdef CONFIG_NCPFS_NFS_NS | |
748 | if (server->name_space[volnum]==NW_NS_NFS) | |
749 | { | |
750 | int result; | |
751 | ||
752 | result=ncp_obtain_DOS_dir_base(server, volnum, dirent, name, &dirent); | |
753 | if (result) return result; | |
754 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); | |
755 | } | |
756 | else | |
757 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
758 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, server->name_space[volnum], cpu_to_le16(0x8006)); | |
759 | } | |
760 | ||
761 | static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6]) | |
762 | { | |
763 | __le16 *dest = (__le16 *) ret; | |
764 | dest[1] = cpu_to_le16(v0); | |
765 | dest[2] = cpu_to_le16(v1); | |
766 | dest[0] = cpu_to_le16(v0 + 1); | |
767 | return; | |
768 | } | |
769 | ||
770 | /* If both dir and name are NULL, then in target there's already a | |
771 | looked-up entry that wants to be opened. */ | |
772 | int ncp_open_create_file_or_subdir(struct ncp_server *server, | |
773 | struct inode *dir, char *name, | |
774 | int open_create_mode, | |
775 | __le32 create_attributes, | |
776 | __le16 desired_acc_rights, | |
777 | struct ncp_entry_info *target) | |
778 | { | |
779 | __le16 search_attribs = cpu_to_le16(0x0006); | |
780 | __u8 volnum; | |
781 | __le32 dirent; | |
782 | int result; | |
783 | ||
784 | volnum = NCP_FINFO(dir)->volNumber; | |
785 | dirent = NCP_FINFO(dir)->dirEntNum; | |
786 | ||
787 | if ((create_attributes & aDIR) != 0) { | |
788 | search_attribs |= cpu_to_le16(0x8000); | |
789 | } | |
790 | ncp_init_request(server); | |
791 | ncp_add_byte(server, 1); /* subfunction */ | |
792 | ncp_add_byte(server, server->name_space[volnum]); | |
793 | ncp_add_byte(server, open_create_mode); | |
794 | ncp_add_word(server, search_attribs); | |
795 | ncp_add_dword(server, RIM_ALL); | |
796 | ncp_add_dword(server, create_attributes); | |
797 | /* The desired acc rights seem to be the inherited rights mask | |
798 | for directories */ | |
799 | ncp_add_word(server, desired_acc_rights); | |
800 | ncp_add_handle_path(server, volnum, dirent, 1, name); | |
801 | ||
802 | if ((result = ncp_request(server, 87)) != 0) | |
803 | goto out; | |
804 | if (!(create_attributes & aDIR)) | |
805 | target->opened = 1; | |
806 | ||
807 | /* in target there's a new finfo to fill */ | |
808 | ncp_extract_file_info(ncp_reply_data(server, 6), &(target->i)); | |
809 | target->volume = target->i.volNumber; | |
810 | ConvertToNWfromDWORD(ncp_reply_le16(server, 0), | |
811 | ncp_reply_le16(server, 2), | |
812 | target->file_handle); | |
813 | ||
814 | ncp_unlock_server(server); | |
815 | ||
816 | (void)ncp_obtain_nfs_info(server, &(target->i)); | |
817 | return 0; | |
818 | ||
819 | out: | |
820 | ncp_unlock_server(server); | |
821 | return result; | |
822 | } | |
823 | ||
824 | int | |
825 | ncp_initialize_search(struct ncp_server *server, struct inode *dir, | |
826 | struct nw_search_sequence *target) | |
827 | { | |
828 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
829 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
830 | int result; | |
831 | ||
832 | ncp_init_request(server); | |
833 | ncp_add_byte(server, 2); /* subfunction */ | |
834 | ncp_add_byte(server, server->name_space[volnum]); | |
835 | ncp_add_byte(server, 0); /* reserved */ | |
836 | ncp_add_handle_path(server, volnum, dirent, 1, NULL); | |
837 | ||
838 | result = ncp_request(server, 87); | |
839 | if (result) | |
840 | goto out; | |
841 | memcpy(target, ncp_reply_data(server, 0), sizeof(*target)); | |
842 | ||
843 | out: | |
844 | ncp_unlock_server(server); | |
845 | return result; | |
846 | } | |
847 | ||
1da177e4 LT |
848 | int ncp_search_for_fileset(struct ncp_server *server, |
849 | struct nw_search_sequence *seq, | |
850 | int* more, | |
851 | int* cnt, | |
852 | char* buffer, | |
853 | size_t bufsize, | |
854 | char** rbuf, | |
855 | size_t* rsize) | |
856 | { | |
857 | int result; | |
858 | ||
859 | ncp_init_request(server); | |
860 | ncp_add_byte(server, 20); | |
861 | ncp_add_byte(server, server->name_space[seq->volNumber]); | |
862 | ncp_add_byte(server, 0); /* datastream */ | |
863 | ncp_add_word(server, cpu_to_le16(0x8006)); | |
864 | ncp_add_dword(server, RIM_ALL); | |
865 | ncp_add_word(server, cpu_to_le16(32767)); /* max returned items */ | |
866 | ncp_add_mem(server, seq, 9); | |
867 | #ifdef CONFIG_NCPFS_NFS_NS | |
868 | if (server->name_space[seq->volNumber] == NW_NS_NFS) { | |
869 | ncp_add_byte(server, 0); /* 0 byte pattern */ | |
870 | } else | |
871 | #endif | |
872 | { | |
873 | ncp_add_byte(server, 2); /* 2 byte pattern */ | |
874 | ncp_add_byte(server, 0xff); /* following is a wildcard */ | |
875 | ncp_add_byte(server, '*'); | |
876 | } | |
877 | result = ncp_request2(server, 87, buffer, bufsize); | |
878 | if (result) { | |
879 | ncp_unlock_server(server); | |
880 | return result; | |
881 | } | |
882 | if (server->ncp_reply_size < 12) { | |
883 | ncp_unlock_server(server); | |
884 | return 0xFF; | |
885 | } | |
886 | *rsize = server->ncp_reply_size - 12; | |
887 | ncp_unlock_server(server); | |
888 | buffer = buffer + sizeof(struct ncp_reply_header); | |
889 | *rbuf = buffer + 12; | |
890 | *cnt = WVAL_LH(buffer + 10); | |
891 | *more = BVAL(buffer + 9); | |
892 | memcpy(seq, buffer, 9); | |
893 | return 0; | |
894 | } | |
895 | ||
896 | static int | |
897 | ncp_RenameNSEntry(struct ncp_server *server, | |
898 | struct inode *old_dir, char *old_name, __le16 old_type, | |
899 | struct inode *new_dir, char *new_name) | |
900 | { | |
901 | int result = -EINVAL; | |
902 | ||
903 | if ((old_dir == NULL) || (old_name == NULL) || | |
904 | (new_dir == NULL) || (new_name == NULL)) | |
905 | goto out; | |
906 | ||
907 | ncp_init_request(server); | |
908 | ncp_add_byte(server, 4); /* subfunction */ | |
909 | ncp_add_byte(server, server->name_space[NCP_FINFO(old_dir)->volNumber]); | |
910 | ncp_add_byte(server, 1); /* rename flag */ | |
911 | ncp_add_word(server, old_type); /* search attributes */ | |
912 | ||
913 | /* source Handle Path */ | |
914 | ncp_add_byte(server, NCP_FINFO(old_dir)->volNumber); | |
915 | ncp_add_dword(server, NCP_FINFO(old_dir)->dirEntNum); | |
916 | ncp_add_byte(server, 1); | |
917 | ncp_add_byte(server, 1); /* 1 source component */ | |
918 | ||
919 | /* dest Handle Path */ | |
920 | ncp_add_byte(server, NCP_FINFO(new_dir)->volNumber); | |
921 | ncp_add_dword(server, NCP_FINFO(new_dir)->dirEntNum); | |
922 | ncp_add_byte(server, 1); | |
923 | ncp_add_byte(server, 1); /* 1 destination component */ | |
924 | ||
925 | /* source path string */ | |
926 | ncp_add_pstring(server, old_name); | |
927 | /* dest path string */ | |
928 | ncp_add_pstring(server, new_name); | |
929 | ||
930 | result = ncp_request(server, 87); | |
931 | ncp_unlock_server(server); | |
932 | out: | |
933 | return result; | |
934 | } | |
935 | ||
936 | int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, | |
937 | struct inode *old_dir, char *old_name, | |
938 | struct inode *new_dir, char *new_name) | |
939 | { | |
940 | int result; | |
941 | __le16 old_type = cpu_to_le16(0x06); | |
942 | ||
943 | /* If somebody can do it atomic, call me... vandrove@vc.cvut.cz */ | |
944 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
945 | new_dir, new_name); | |
946 | if (result == 0xFF) /* File Not Found, try directory */ | |
947 | { | |
948 | old_type = cpu_to_le16(0x16); | |
949 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
950 | new_dir, new_name); | |
951 | } | |
952 | if (result != 0x92) return result; /* All except NO_FILES_RENAMED */ | |
953 | result = ncp_del_file_or_subdir(server, new_dir, new_name); | |
954 | if (result != 0) return -EACCES; | |
955 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
956 | new_dir, new_name); | |
957 | return result; | |
958 | } | |
959 | ||
960 | ||
961 | /* We have to transfer to/from user space */ | |
962 | int | |
963 | ncp_read_kernel(struct ncp_server *server, const char *file_id, | |
964 | __u32 offset, __u16 to_read, char *target, int *bytes_read) | |
965 | { | |
966 | char *source; | |
967 | int result; | |
968 | ||
969 | ncp_init_request(server); | |
970 | ncp_add_byte(server, 0); | |
971 | ncp_add_mem(server, file_id, 6); | |
972 | ncp_add_be32(server, offset); | |
973 | ncp_add_be16(server, to_read); | |
974 | ||
975 | if ((result = ncp_request(server, 72)) != 0) { | |
976 | goto out; | |
977 | } | |
978 | *bytes_read = ncp_reply_be16(server, 0); | |
979 | source = ncp_reply_data(server, 2 + (offset & 1)); | |
980 | ||
981 | memcpy(target, source, *bytes_read); | |
982 | out: | |
983 | ncp_unlock_server(server); | |
984 | return result; | |
985 | } | |
986 | ||
987 | /* There is a problem... egrep and some other silly tools do: | |
988 | x = mmap(NULL, MAP_PRIVATE, PROT_READ|PROT_WRITE, <ncpfs fd>, 32768); | |
989 | read(<ncpfs fd>, x, 32768); | |
990 | Now copying read result by copy_to_user causes pagefault. This pagefault | |
991 | could not be handled because of server was locked due to read. So we have | |
992 | to use temporary buffer. So ncp_unlock_server must be done before | |
993 | copy_to_user (and for write, copy_from_user must be done before | |
994 | ncp_init_request... same applies for send raw packet ioctl). Because of | |
995 | file is normally read in bigger chunks, caller provides kmalloced | |
996 | (vmalloced) chunk of memory with size >= to_read... | |
997 | */ | |
998 | int | |
999 | ncp_read_bounce(struct ncp_server *server, const char *file_id, | |
1000 | __u32 offset, __u16 to_read, char __user *target, int *bytes_read, | |
1001 | void* bounce, __u32 bufsize) | |
1002 | { | |
1003 | int result; | |
1004 | ||
1005 | ncp_init_request(server); | |
1006 | ncp_add_byte(server, 0); | |
1007 | ncp_add_mem(server, file_id, 6); | |
1008 | ncp_add_be32(server, offset); | |
1009 | ncp_add_be16(server, to_read); | |
1010 | result = ncp_request2(server, 72, bounce, bufsize); | |
1011 | ncp_unlock_server(server); | |
1012 | if (!result) { | |
1013 | int len = be16_to_cpu(get_unaligned((__be16*)((char*)bounce + | |
1014 | sizeof(struct ncp_reply_header)))); | |
1015 | result = -EIO; | |
1016 | if (len <= to_read) { | |
1017 | char* source; | |
1018 | ||
1019 | source = (char*)bounce + | |
1020 | sizeof(struct ncp_reply_header) + 2 + | |
1021 | (offset & 1); | |
1022 | *bytes_read = len; | |
1023 | result = 0; | |
1024 | if (copy_to_user(target, source, len)) | |
1025 | result = -EFAULT; | |
1026 | } | |
1027 | } | |
1028 | return result; | |
1029 | } | |
1030 | ||
1031 | int | |
1032 | ncp_write_kernel(struct ncp_server *server, const char *file_id, | |
1033 | __u32 offset, __u16 to_write, | |
1034 | const char *source, int *bytes_written) | |
1035 | { | |
1036 | int result; | |
1037 | ||
1038 | ncp_init_request(server); | |
1039 | ncp_add_byte(server, 0); | |
1040 | ncp_add_mem(server, file_id, 6); | |
1041 | ncp_add_be32(server, offset); | |
1042 | ncp_add_be16(server, to_write); | |
1043 | ncp_add_mem(server, source, to_write); | |
1044 | ||
1045 | if ((result = ncp_request(server, 73)) == 0) | |
1046 | *bytes_written = to_write; | |
1047 | ncp_unlock_server(server); | |
1048 | return result; | |
1049 | } | |
1050 | ||
1051 | #ifdef CONFIG_NCPFS_IOCTL_LOCKING | |
1052 | int | |
1053 | ncp_LogPhysicalRecord(struct ncp_server *server, const char *file_id, | |
1054 | __u8 locktype, __u32 offset, __u32 length, __u16 timeout) | |
1055 | { | |
1056 | int result; | |
1057 | ||
1058 | ncp_init_request(server); | |
1059 | ncp_add_byte(server, locktype); | |
1060 | ncp_add_mem(server, file_id, 6); | |
1061 | ncp_add_be32(server, offset); | |
1062 | ncp_add_be32(server, length); | |
1063 | ncp_add_be16(server, timeout); | |
1064 | ||
1065 | if ((result = ncp_request(server, 0x1A)) != 0) | |
1066 | { | |
1067 | ncp_unlock_server(server); | |
1068 | return result; | |
1069 | } | |
1070 | ncp_unlock_server(server); | |
1071 | return 0; | |
1072 | } | |
1073 | ||
1074 | int | |
1075 | ncp_ClearPhysicalRecord(struct ncp_server *server, const char *file_id, | |
1076 | __u32 offset, __u32 length) | |
1077 | { | |
1078 | int result; | |
1079 | ||
1080 | ncp_init_request(server); | |
1081 | ncp_add_byte(server, 0); /* who knows... lanalyzer says that */ | |
1082 | ncp_add_mem(server, file_id, 6); | |
1083 | ncp_add_be32(server, offset); | |
1084 | ncp_add_be32(server, length); | |
1085 | ||
1086 | if ((result = ncp_request(server, 0x1E)) != 0) | |
1087 | { | |
1088 | ncp_unlock_server(server); | |
1089 | return result; | |
1090 | } | |
1091 | ncp_unlock_server(server); | |
1092 | return 0; | |
1093 | } | |
1094 | #endif /* CONFIG_NCPFS_IOCTL_LOCKING */ | |
1095 | ||
1096 | #ifdef CONFIG_NCPFS_NLS | |
1097 | /* This are the NLS conversion routines with inspirations and code parts | |
1098 | * from the vfat file system and hints from Petr Vandrovec. | |
1099 | */ | |
1100 | ||
1101 | int | |
1102 | ncp__io2vol(struct ncp_server *server, unsigned char *vname, unsigned int *vlen, | |
1103 | const unsigned char *iname, unsigned int ilen, int cc) | |
1104 | { | |
1105 | struct nls_table *in = server->nls_io; | |
1106 | struct nls_table *out = server->nls_vol; | |
1107 | unsigned char *vname_start; | |
1108 | unsigned char *vname_end; | |
1109 | const unsigned char *iname_end; | |
1110 | ||
1111 | iname_end = iname + ilen; | |
1112 | vname_start = vname; | |
1113 | vname_end = vname + *vlen - 1; | |
1114 | ||
1115 | while (iname < iname_end) { | |
1116 | int chl; | |
1117 | wchar_t ec; | |
1118 | ||
1119 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { | |
1120 | int k; | |
1121 | ||
1122 | k = utf8_mbtowc(&ec, iname, iname_end - iname); | |
1123 | if (k < 0) | |
1124 | return -EINVAL; | |
1125 | iname += k; | |
1126 | } else { | |
1127 | if (*iname == NCP_ESC) { | |
1128 | int k; | |
1129 | ||
1130 | if (iname_end - iname < 5) | |
1131 | goto nospec; | |
1132 | ||
1133 | ec = 0; | |
1134 | for (k = 1; k < 5; k++) { | |
1135 | unsigned char nc; | |
1136 | ||
1137 | nc = iname[k] - '0'; | |
1138 | if (nc >= 10) { | |
1139 | nc -= 'A' - '0' - 10; | |
1140 | if ((nc < 10) || (nc > 15)) { | |
1141 | goto nospec; | |
1142 | } | |
1143 | } | |
1144 | ec = (ec << 4) | nc; | |
1145 | } | |
1146 | iname += 5; | |
1147 | } else { | |
1148 | nospec:; | |
1149 | if ( (chl = in->char2uni(iname, iname_end - iname, &ec)) < 0) | |
1150 | return chl; | |
1151 | iname += chl; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | /* unitoupper should be here! */ | |
1156 | ||
1157 | chl = out->uni2char(ec, vname, vname_end - vname); | |
1158 | if (chl < 0) | |
1159 | return chl; | |
1160 | ||
1161 | /* this is wrong... */ | |
1162 | if (cc) { | |
1163 | int chi; | |
1164 | ||
1165 | for (chi = 0; chi < chl; chi++){ | |
1166 | vname[chi] = ncp_toupper(out, vname[chi]); | |
1167 | } | |
1168 | } | |
1169 | vname += chl; | |
1170 | } | |
1171 | ||
1172 | *vname = 0; | |
1173 | *vlen = vname - vname_start; | |
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | int | |
1178 | ncp__vol2io(struct ncp_server *server, unsigned char *iname, unsigned int *ilen, | |
1179 | const unsigned char *vname, unsigned int vlen, int cc) | |
1180 | { | |
1181 | struct nls_table *in = server->nls_vol; | |
1182 | struct nls_table *out = server->nls_io; | |
1183 | const unsigned char *vname_end; | |
1184 | unsigned char *iname_start; | |
1185 | unsigned char *iname_end; | |
1186 | unsigned char *vname_cc; | |
1187 | int err; | |
1188 | ||
1189 | vname_cc = NULL; | |
1190 | ||
1191 | if (cc) { | |
1192 | int i; | |
1193 | ||
1194 | /* this is wrong! */ | |
1195 | vname_cc = kmalloc(vlen, GFP_KERNEL); | |
1196 | if (!vname_cc) | |
1197 | return -ENOMEM; | |
1198 | for (i = 0; i < vlen; i++) | |
1199 | vname_cc[i] = ncp_tolower(in, vname[i]); | |
1200 | vname = vname_cc; | |
1201 | } | |
1202 | ||
1203 | iname_start = iname; | |
1204 | iname_end = iname + *ilen - 1; | |
1205 | vname_end = vname + vlen; | |
1206 | ||
1207 | while (vname < vname_end) { | |
1208 | wchar_t ec; | |
1209 | int chl; | |
1210 | ||
1211 | if ( (chl = in->char2uni(vname, vname_end - vname, &ec)) < 0) { | |
1212 | err = chl; | |
1213 | goto quit; | |
1214 | } | |
1215 | vname += chl; | |
1216 | ||
1217 | /* unitolower should be here! */ | |
1218 | ||
1219 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { | |
1220 | int k; | |
1221 | ||
1222 | k = utf8_wctomb(iname, ec, iname_end - iname); | |
1223 | if (k < 0) { | |
1224 | err = -ENAMETOOLONG; | |
1225 | goto quit; | |
1226 | } | |
1227 | iname += k; | |
1228 | } else { | |
1229 | if ( (chl = out->uni2char(ec, iname, iname_end - iname)) >= 0) { | |
1230 | iname += chl; | |
1231 | } else { | |
1232 | int k; | |
1233 | ||
1234 | if (iname_end - iname < 5) { | |
1235 | err = -ENAMETOOLONG; | |
1236 | goto quit; | |
1237 | } | |
1238 | *iname = NCP_ESC; | |
1239 | for (k = 4; k > 0; k--) { | |
1240 | unsigned char v; | |
1241 | ||
1242 | v = (ec & 0xF) + '0'; | |
1243 | if (v > '9') { | |
1244 | v += 'A' - '9' - 1; | |
1245 | } | |
1246 | iname[k] = v; | |
1247 | ec >>= 4; | |
1248 | } | |
1249 | iname += 5; | |
1250 | } | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | *iname = 0; | |
1255 | *ilen = iname - iname_start; | |
1256 | err = 0; | |
1257 | quit:; | |
1258 | if (cc) | |
1259 | kfree(vname_cc); | |
1260 | return err; | |
1261 | } | |
1262 | ||
1263 | #else | |
1264 | ||
1265 | int | |
1266 | ncp__io2vol(unsigned char *vname, unsigned int *vlen, | |
1267 | const unsigned char *iname, unsigned int ilen, int cc) | |
1268 | { | |
1269 | int i; | |
1270 | ||
1271 | if (*vlen <= ilen) | |
1272 | return -ENAMETOOLONG; | |
1273 | ||
1274 | if (cc) | |
1275 | for (i = 0; i < ilen; i++) { | |
1276 | *vname = toupper(*iname); | |
1277 | vname++; | |
1278 | iname++; | |
1279 | } | |
1280 | else { | |
1281 | memmove(vname, iname, ilen); | |
1282 | vname += ilen; | |
1283 | } | |
1284 | ||
1285 | *vlen = ilen; | |
1286 | *vname = 0; | |
1287 | return 0; | |
1288 | } | |
1289 | ||
1290 | int | |
1291 | ncp__vol2io(unsigned char *iname, unsigned int *ilen, | |
1292 | const unsigned char *vname, unsigned int vlen, int cc) | |
1293 | { | |
1294 | int i; | |
1295 | ||
1296 | if (*ilen <= vlen) | |
1297 | return -ENAMETOOLONG; | |
1298 | ||
1299 | if (cc) | |
1300 | for (i = 0; i < vlen; i++) { | |
1301 | *iname = tolower(*vname); | |
1302 | iname++; | |
1303 | vname++; | |
1304 | } | |
1305 | else { | |
1306 | memmove(iname, vname, vlen); | |
1307 | iname += vlen; | |
1308 | } | |
1309 | ||
1310 | *ilen = vlen; | |
1311 | *iname = 0; | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | #endif |