Commit | Line | Data |
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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 | ||
1da177e4 LT |
13 | |
14 | #include "ncplib_kernel.h" | |
15 | ||
16 | static inline void assert_server_locked(struct ncp_server *server) | |
17 | { | |
18 | if (server->lock == 0) { | |
19 | DPRINTK("ncpfs: server not locked!\n"); | |
20 | } | |
21 | } | |
22 | ||
23 | static void ncp_add_byte(struct ncp_server *server, __u8 x) | |
24 | { | |
25 | assert_server_locked(server); | |
26 | *(__u8 *) (&(server->packet[server->current_size])) = x; | |
27 | server->current_size += 1; | |
28 | return; | |
29 | } | |
30 | ||
31 | static void ncp_add_word(struct ncp_server *server, __le16 x) | |
32 | { | |
33 | assert_server_locked(server); | |
34 | put_unaligned(x, (__le16 *) (&(server->packet[server->current_size]))); | |
35 | server->current_size += 2; | |
36 | return; | |
37 | } | |
38 | ||
39 | static void ncp_add_be16(struct ncp_server *server, __u16 x) | |
40 | { | |
41 | assert_server_locked(server); | |
42 | put_unaligned(cpu_to_be16(x), (__be16 *) (&(server->packet[server->current_size]))); | |
43 | server->current_size += 2; | |
44 | } | |
45 | ||
46 | static void ncp_add_dword(struct ncp_server *server, __le32 x) | |
47 | { | |
48 | assert_server_locked(server); | |
49 | put_unaligned(x, (__le32 *) (&(server->packet[server->current_size]))); | |
50 | server->current_size += 4; | |
51 | return; | |
52 | } | |
53 | ||
54 | static void ncp_add_be32(struct ncp_server *server, __u32 x) | |
55 | { | |
56 | assert_server_locked(server); | |
57 | put_unaligned(cpu_to_be32(x), (__be32 *)(&(server->packet[server->current_size]))); | |
58 | server->current_size += 4; | |
59 | } | |
60 | ||
61 | static inline void ncp_add_dword_lh(struct ncp_server *server, __u32 x) { | |
62 | ncp_add_dword(server, cpu_to_le32(x)); | |
63 | } | |
64 | ||
65 | static void ncp_add_mem(struct ncp_server *server, const void *source, int size) | |
66 | { | |
67 | assert_server_locked(server); | |
68 | memcpy(&(server->packet[server->current_size]), source, size); | |
69 | server->current_size += size; | |
70 | return; | |
71 | } | |
72 | ||
73 | static void ncp_add_pstring(struct ncp_server *server, const char *s) | |
74 | { | |
75 | int len = strlen(s); | |
76 | assert_server_locked(server); | |
77 | if (len > 255) { | |
78 | DPRINTK("ncpfs: string too long: %s\n", s); | |
79 | len = 255; | |
80 | } | |
81 | ncp_add_byte(server, len); | |
82 | ncp_add_mem(server, s, len); | |
83 | return; | |
84 | } | |
85 | ||
86 | static inline void ncp_init_request(struct ncp_server *server) | |
87 | { | |
88 | ncp_lock_server(server); | |
89 | ||
90 | server->current_size = sizeof(struct ncp_request_header); | |
91 | server->has_subfunction = 0; | |
92 | } | |
93 | ||
94 | static inline void ncp_init_request_s(struct ncp_server *server, int subfunction) | |
95 | { | |
96 | ncp_lock_server(server); | |
97 | ||
98 | server->current_size = sizeof(struct ncp_request_header) + 2; | |
99 | ncp_add_byte(server, subfunction); | |
100 | ||
101 | server->has_subfunction = 1; | |
102 | } | |
103 | ||
104 | static inline char * | |
105 | ncp_reply_data(struct ncp_server *server, int offset) | |
106 | { | |
107 | return &(server->packet[sizeof(struct ncp_reply_header) + offset]); | |
108 | } | |
109 | ||
110 | static inline __u8 BVAL(void* data) | |
111 | { | |
112 | return get_unaligned((__u8*)data); | |
113 | } | |
114 | ||
115 | static __u8 | |
116 | ncp_reply_byte(struct ncp_server *server, int offset) | |
117 | { | |
118 | return get_unaligned((__u8 *) ncp_reply_data(server, offset)); | |
119 | } | |
120 | ||
121 | static inline __u16 WVAL_LH(void* data) | |
122 | { | |
123 | return le16_to_cpu(get_unaligned((__le16*)data)); | |
124 | } | |
125 | ||
126 | static __u16 | |
127 | ncp_reply_le16(struct ncp_server *server, int offset) | |
128 | { | |
129 | return le16_to_cpu(get_unaligned((__le16 *) ncp_reply_data(server, offset))); | |
130 | } | |
131 | ||
132 | static __u16 | |
133 | ncp_reply_be16(struct ncp_server *server, int offset) | |
134 | { | |
135 | return be16_to_cpu(get_unaligned((__be16 *) ncp_reply_data(server, offset))); | |
136 | } | |
137 | ||
138 | static inline __u32 DVAL_LH(void* data) | |
139 | { | |
140 | return le32_to_cpu(get_unaligned((__le32*)data)); | |
141 | } | |
142 | ||
143 | static __le32 | |
144 | ncp_reply_dword(struct ncp_server *server, int offset) | |
145 | { | |
146 | return get_unaligned((__le32 *) ncp_reply_data(server, offset)); | |
147 | } | |
148 | ||
149 | static inline __u32 ncp_reply_dword_lh(struct ncp_server* server, int offset) { | |
150 | return le32_to_cpu(ncp_reply_dword(server, offset)); | |
151 | } | |
152 | ||
153 | int | |
154 | ncp_negotiate_buffersize(struct ncp_server *server, int size, int *target) | |
155 | { | |
156 | int result; | |
157 | ||
158 | ncp_init_request(server); | |
159 | ncp_add_be16(server, size); | |
160 | ||
161 | if ((result = ncp_request(server, 33)) != 0) { | |
162 | ncp_unlock_server(server); | |
163 | return result; | |
164 | } | |
165 | *target = min_t(unsigned int, ncp_reply_be16(server, 0), size); | |
166 | ||
167 | ncp_unlock_server(server); | |
168 | return 0; | |
169 | } | |
170 | ||
171 | ||
172 | /* options: | |
173 | * bit 0 ipx checksum | |
174 | * bit 1 packet signing | |
175 | */ | |
176 | int | |
177 | ncp_negotiate_size_and_options(struct ncp_server *server, | |
178 | int size, int options, int *ret_size, int *ret_options) { | |
179 | int result; | |
180 | ||
181 | /* there is minimum */ | |
182 | if (size < NCP_BLOCK_SIZE) size = NCP_BLOCK_SIZE; | |
183 | ||
184 | ncp_init_request(server); | |
185 | ncp_add_be16(server, size); | |
186 | ncp_add_byte(server, options); | |
187 | ||
188 | if ((result = ncp_request(server, 0x61)) != 0) | |
189 | { | |
190 | ncp_unlock_server(server); | |
191 | return result; | |
192 | } | |
193 | ||
194 | /* NCP over UDP returns 0 (!!!) */ | |
195 | result = ncp_reply_be16(server, 0); | |
196 | if (result >= NCP_BLOCK_SIZE) | |
197 | size = min(result, size); | |
198 | *ret_size = size; | |
199 | *ret_options = ncp_reply_byte(server, 4); | |
200 | ||
201 | ncp_unlock_server(server); | |
202 | return 0; | |
203 | } | |
204 | ||
205 | int ncp_get_volume_info_with_number(struct ncp_server* server, | |
206 | int n, struct ncp_volume_info* target) { | |
207 | int result; | |
208 | int len; | |
209 | ||
210 | ncp_init_request_s(server, 44); | |
211 | ncp_add_byte(server, n); | |
212 | ||
213 | if ((result = ncp_request(server, 22)) != 0) { | |
214 | goto out; | |
215 | } | |
216 | target->total_blocks = ncp_reply_dword_lh(server, 0); | |
217 | target->free_blocks = ncp_reply_dword_lh(server, 4); | |
218 | target->purgeable_blocks = ncp_reply_dword_lh(server, 8); | |
219 | target->not_yet_purgeable_blocks = ncp_reply_dword_lh(server, 12); | |
220 | target->total_dir_entries = ncp_reply_dword_lh(server, 16); | |
221 | target->available_dir_entries = ncp_reply_dword_lh(server, 20); | |
222 | target->sectors_per_block = ncp_reply_byte(server, 28); | |
223 | ||
224 | memset(&(target->volume_name), 0, sizeof(target->volume_name)); | |
225 | ||
226 | result = -EIO; | |
227 | len = ncp_reply_byte(server, 29); | |
228 | if (len > NCP_VOLNAME_LEN) { | |
229 | DPRINTK("ncpfs: volume name too long: %d\n", len); | |
230 | goto out; | |
231 | } | |
232 | memcpy(&(target->volume_name), ncp_reply_data(server, 30), len); | |
233 | result = 0; | |
234 | out: | |
235 | ncp_unlock_server(server); | |
236 | return result; | |
237 | } | |
238 | ||
239 | int ncp_get_directory_info(struct ncp_server* server, __u8 n, | |
240 | struct ncp_volume_info* target) { | |
241 | int result; | |
242 | int len; | |
243 | ||
244 | ncp_init_request_s(server, 45); | |
245 | ncp_add_byte(server, n); | |
246 | ||
247 | if ((result = ncp_request(server, 22)) != 0) { | |
248 | goto out; | |
249 | } | |
250 | target->total_blocks = ncp_reply_dword_lh(server, 0); | |
251 | target->free_blocks = ncp_reply_dword_lh(server, 4); | |
252 | target->purgeable_blocks = 0; | |
253 | target->not_yet_purgeable_blocks = 0; | |
254 | target->total_dir_entries = ncp_reply_dword_lh(server, 8); | |
255 | target->available_dir_entries = ncp_reply_dword_lh(server, 12); | |
256 | target->sectors_per_block = ncp_reply_byte(server, 20); | |
257 | ||
258 | memset(&(target->volume_name), 0, sizeof(target->volume_name)); | |
259 | ||
260 | result = -EIO; | |
261 | len = ncp_reply_byte(server, 21); | |
262 | if (len > NCP_VOLNAME_LEN) { | |
263 | DPRINTK("ncpfs: volume name too long: %d\n", len); | |
264 | goto out; | |
265 | } | |
266 | memcpy(&(target->volume_name), ncp_reply_data(server, 22), len); | |
267 | result = 0; | |
268 | out: | |
269 | ncp_unlock_server(server); | |
270 | return result; | |
271 | } | |
272 | ||
273 | int | |
274 | ncp_close_file(struct ncp_server *server, const char *file_id) | |
275 | { | |
276 | int result; | |
277 | ||
278 | ncp_init_request(server); | |
279 | ncp_add_byte(server, 0); | |
280 | ncp_add_mem(server, file_id, 6); | |
281 | ||
282 | result = ncp_request(server, 66); | |
283 | ncp_unlock_server(server); | |
284 | return result; | |
285 | } | |
286 | ||
287 | int | |
288 | ncp_make_closed(struct inode *inode) | |
289 | { | |
290 | int err; | |
291 | ||
292 | err = 0; | |
8e3f9045 | 293 | mutex_lock(&NCP_FINFO(inode)->open_mutex); |
1da177e4 LT |
294 | if (atomic_read(&NCP_FINFO(inode)->opened) == 1) { |
295 | atomic_set(&NCP_FINFO(inode)->opened, 0); | |
296 | err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle); | |
297 | ||
298 | if (!err) | |
299 | PPRINTK("ncp_make_closed: volnum=%d, dirent=%u, error=%d\n", | |
300 | NCP_FINFO(inode)->volNumber, | |
301 | NCP_FINFO(inode)->dirEntNum, err); | |
302 | } | |
8e3f9045 | 303 | mutex_unlock(&NCP_FINFO(inode)->open_mutex); |
1da177e4 LT |
304 | return err; |
305 | } | |
306 | ||
307 | static void ncp_add_handle_path(struct ncp_server *server, __u8 vol_num, | |
308 | __le32 dir_base, int have_dir_base, | |
309 | const char *path) | |
310 | { | |
311 | ncp_add_byte(server, vol_num); | |
312 | ncp_add_dword(server, dir_base); | |
313 | if (have_dir_base != 0) { | |
314 | ncp_add_byte(server, 1); /* dir_base */ | |
315 | } else { | |
316 | ncp_add_byte(server, 0xff); /* no handle */ | |
317 | } | |
318 | if (path != NULL) { | |
319 | ncp_add_byte(server, 1); /* 1 component */ | |
320 | ncp_add_pstring(server, path); | |
321 | } else { | |
322 | ncp_add_byte(server, 0); | |
323 | } | |
324 | } | |
325 | ||
326 | int ncp_dirhandle_alloc(struct ncp_server* server, __u8 volnum, __le32 dirent, | |
327 | __u8* dirhandle) { | |
328 | int result; | |
329 | ||
330 | ncp_init_request(server); | |
331 | ncp_add_byte(server, 12); /* subfunction */ | |
332 | ncp_add_byte(server, NW_NS_DOS); | |
333 | ncp_add_byte(server, 0); | |
334 | ncp_add_word(server, 0); | |
335 | ncp_add_handle_path(server, volnum, dirent, 1, NULL); | |
336 | if ((result = ncp_request(server, 87)) == 0) { | |
337 | *dirhandle = ncp_reply_byte(server, 0); | |
338 | } | |
339 | ncp_unlock_server(server); | |
340 | return result; | |
341 | } | |
342 | ||
343 | int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) { | |
344 | int result; | |
345 | ||
346 | ncp_init_request_s(server, 20); | |
347 | ncp_add_byte(server, dirhandle); | |
348 | result = ncp_request(server, 22); | |
349 | ncp_unlock_server(server); | |
350 | return result; | |
351 | } | |
352 | ||
353 | void ncp_extract_file_info(void *structure, struct nw_info_struct *target) | |
354 | { | |
355 | __u8 *name_len; | |
356 | const int info_struct_size = offsetof(struct nw_info_struct, nameLen); | |
357 | ||
358 | memcpy(target, structure, info_struct_size); | |
359 | name_len = structure + info_struct_size; | |
360 | target->nameLen = *name_len; | |
361 | memcpy(target->entryName, name_len + 1, *name_len); | |
362 | target->entryName[*name_len] = '\0'; | |
363 | target->volNumber = le32_to_cpu(target->volNumber); | |
364 | return; | |
365 | } | |
366 | ||
367 | #ifdef CONFIG_NCPFS_NFS_NS | |
368 | static inline void ncp_extract_nfs_info(unsigned char *structure, | |
369 | struct nw_nfs_info *target) | |
370 | { | |
371 | target->mode = DVAL_LH(structure); | |
372 | target->rdev = DVAL_LH(structure + 8); | |
373 | } | |
374 | #endif | |
375 | ||
376 | int ncp_obtain_nfs_info(struct ncp_server *server, | |
377 | struct nw_info_struct *target) | |
378 | ||
379 | { | |
380 | int result = 0; | |
381 | #ifdef CONFIG_NCPFS_NFS_NS | |
382 | __u32 volnum = target->volNumber; | |
383 | ||
384 | if (ncp_is_nfs_extras(server, volnum)) { | |
385 | ncp_init_request(server); | |
386 | ncp_add_byte(server, 19); /* subfunction */ | |
387 | ncp_add_byte(server, server->name_space[volnum]); | |
388 | ncp_add_byte(server, NW_NS_NFS); | |
389 | ncp_add_byte(server, 0); | |
390 | ncp_add_byte(server, volnum); | |
391 | ncp_add_dword(server, target->dirEntNum); | |
392 | /* We must retrieve both nlinks and rdev, otherwise some server versions | |
393 | report zeroes instead of valid data */ | |
394 | ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); | |
395 | ||
396 | if ((result = ncp_request(server, 87)) == 0) { | |
397 | ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs); | |
398 | DPRINTK(KERN_DEBUG | |
399 | "ncp_obtain_nfs_info: (%s) mode=0%o, rdev=0x%x\n", | |
400 | target->entryName, target->nfs.mode, | |
401 | target->nfs.rdev); | |
402 | } else { | |
403 | target->nfs.mode = 0; | |
404 | target->nfs.rdev = 0; | |
405 | } | |
406 | ncp_unlock_server(server); | |
407 | ||
408 | } else | |
409 | #endif | |
410 | { | |
411 | target->nfs.mode = 0; | |
412 | target->nfs.rdev = 0; | |
413 | } | |
414 | return result; | |
415 | } | |
416 | ||
417 | /* | |
418 | * Returns information for a (one-component) name relative to | |
419 | * the specified directory. | |
420 | */ | |
421 | int ncp_obtain_info(struct ncp_server *server, struct inode *dir, char *path, | |
422 | struct nw_info_struct *target) | |
423 | { | |
424 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
425 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
426 | int result; | |
427 | ||
428 | if (target == NULL) { | |
429 | printk(KERN_ERR "ncp_obtain_info: invalid call\n"); | |
430 | return -EINVAL; | |
431 | } | |
432 | ncp_init_request(server); | |
433 | ncp_add_byte(server, 6); /* subfunction */ | |
434 | ncp_add_byte(server, server->name_space[volnum]); | |
435 | ncp_add_byte(server, server->name_space[volnum]); /* N.B. twice ?? */ | |
436 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ | |
437 | ncp_add_dword(server, RIM_ALL); | |
438 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
439 | ||
440 | if ((result = ncp_request(server, 87)) != 0) | |
441 | goto out; | |
442 | ncp_extract_file_info(ncp_reply_data(server, 0), target); | |
443 | ncp_unlock_server(server); | |
444 | ||
445 | result = ncp_obtain_nfs_info(server, target); | |
446 | return result; | |
447 | ||
448 | out: | |
449 | ncp_unlock_server(server); | |
450 | return result; | |
451 | } | |
452 | ||
453 | #ifdef CONFIG_NCPFS_NFS_NS | |
454 | static int | |
455 | ncp_obtain_DOS_dir_base(struct ncp_server *server, | |
456 | __u8 volnum, __le32 dirent, | |
457 | char *path, /* At most 1 component */ | |
458 | __le32 *DOS_dir_base) | |
459 | { | |
460 | int result; | |
461 | ||
462 | ncp_init_request(server); | |
463 | ncp_add_byte(server, 6); /* subfunction */ | |
464 | ncp_add_byte(server, server->name_space[volnum]); | |
465 | ncp_add_byte(server, server->name_space[volnum]); | |
466 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ | |
467 | ncp_add_dword(server, RIM_DIRECTORY); | |
468 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
469 | ||
470 | if ((result = ncp_request(server, 87)) == 0) | |
471 | { | |
472 | if (DOS_dir_base) *DOS_dir_base=ncp_reply_dword(server, 0x34); | |
473 | } | |
474 | ncp_unlock_server(server); | |
475 | return result; | |
476 | } | |
477 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
478 | ||
479 | static inline int | |
480 | ncp_get_known_namespace(struct ncp_server *server, __u8 volume) | |
481 | { | |
482 | #if defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) | |
483 | int result; | |
484 | __u8 *namespace; | |
485 | __u16 no_namespaces; | |
486 | ||
487 | ncp_init_request(server); | |
488 | ncp_add_byte(server, 24); /* Subfunction: Get Name Spaces Loaded */ | |
489 | ncp_add_word(server, 0); | |
490 | ncp_add_byte(server, volume); | |
491 | ||
492 | if ((result = ncp_request(server, 87)) != 0) { | |
493 | ncp_unlock_server(server); | |
494 | return NW_NS_DOS; /* not result ?? */ | |
495 | } | |
496 | ||
497 | result = NW_NS_DOS; | |
498 | no_namespaces = ncp_reply_le16(server, 0); | |
499 | namespace = ncp_reply_data(server, 2); | |
500 | ||
501 | while (no_namespaces > 0) { | |
502 | DPRINTK("get_namespaces: found %d on %d\n", *namespace, volume); | |
503 | ||
504 | #ifdef CONFIG_NCPFS_NFS_NS | |
505 | if ((*namespace == NW_NS_NFS) && !(server->m.flags&NCP_MOUNT_NO_NFS)) | |
506 | { | |
507 | result = NW_NS_NFS; | |
508 | break; | |
509 | } | |
510 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
511 | #ifdef CONFIG_NCPFS_OS2_NS | |
512 | if ((*namespace == NW_NS_OS2) && !(server->m.flags&NCP_MOUNT_NO_OS2)) | |
513 | { | |
514 | result = NW_NS_OS2; | |
515 | } | |
516 | #endif /* CONFIG_NCPFS_OS2_NS */ | |
517 | namespace += 1; | |
518 | no_namespaces -= 1; | |
519 | } | |
520 | ncp_unlock_server(server); | |
521 | return result; | |
522 | #else /* neither OS2 nor NFS - only DOS */ | |
523 | return NW_NS_DOS; | |
524 | #endif /* defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) */ | |
525 | } | |
526 | ||
527 | static int | |
528 | ncp_ObtainSpecificDirBase(struct ncp_server *server, | |
529 | __u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base, | |
530 | char *path, /* At most 1 component */ | |
531 | __le32 *dirEntNum, __le32 *DosDirNum) | |
532 | { | |
533 | int result; | |
534 | ||
535 | ncp_init_request(server); | |
536 | ncp_add_byte(server, 6); /* subfunction */ | |
537 | ncp_add_byte(server, nsSrc); | |
538 | ncp_add_byte(server, nsDst); | |
539 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ | |
540 | ncp_add_dword(server, RIM_ALL); | |
541 | ncp_add_handle_path(server, vol_num, dir_base, 1, path); | |
542 | ||
543 | if ((result = ncp_request(server, 87)) != 0) | |
544 | { | |
545 | ncp_unlock_server(server); | |
546 | return result; | |
547 | } | |
548 | ||
549 | if (dirEntNum) | |
550 | *dirEntNum = ncp_reply_dword(server, 0x30); | |
551 | if (DosDirNum) | |
552 | *DosDirNum = ncp_reply_dword(server, 0x34); | |
553 | ncp_unlock_server(server); | |
554 | return 0; | |
555 | } | |
556 | ||
557 | int | |
558 | ncp_mount_subdir(struct ncp_server *server, | |
559 | __u8 volNumber, __u8 srcNS, __le32 dirEntNum, | |
560 | __u32* volume, __le32* newDirEnt, __le32* newDosEnt) | |
561 | { | |
562 | int dstNS; | |
563 | int result; | |
564 | ||
565 | dstNS = ncp_get_known_namespace(server, volNumber); | |
566 | if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber, | |
567 | dirEntNum, NULL, newDirEnt, newDosEnt)) != 0) | |
568 | { | |
569 | return result; | |
570 | } | |
571 | server->name_space[volNumber] = dstNS; | |
572 | *volume = volNumber; | |
573 | server->m.mounted_vol[1] = 0; | |
574 | server->m.mounted_vol[0] = 'X'; | |
575 | return 0; | |
576 | } | |
577 | ||
578 | int | |
579 | ncp_get_volume_root(struct ncp_server *server, const char *volname, | |
580 | __u32* volume, __le32* dirent, __le32* dosdirent) | |
581 | { | |
582 | int result; | |
583 | __u8 volnum; | |
584 | ||
585 | DPRINTK("ncp_get_volume_root: looking up vol %s\n", volname); | |
586 | ||
587 | ncp_init_request(server); | |
588 | ncp_add_byte(server, 22); /* Subfunction: Generate dir handle */ | |
589 | ncp_add_byte(server, 0); /* DOS namespace */ | |
590 | ncp_add_byte(server, 0); /* reserved */ | |
591 | ncp_add_byte(server, 0); /* reserved */ | |
592 | ncp_add_byte(server, 0); /* reserved */ | |
593 | ||
594 | ncp_add_byte(server, 0); /* faked volume number */ | |
595 | ncp_add_dword(server, 0); /* faked dir_base */ | |
596 | ncp_add_byte(server, 0xff); /* Don't have a dir_base */ | |
597 | ncp_add_byte(server, 1); /* 1 path component */ | |
598 | ncp_add_pstring(server, volname); | |
599 | ||
600 | if ((result = ncp_request(server, 87)) != 0) { | |
601 | ncp_unlock_server(server); | |
602 | return result; | |
603 | } | |
604 | *dirent = *dosdirent = ncp_reply_dword(server, 4); | |
605 | volnum = ncp_reply_byte(server, 8); | |
606 | ncp_unlock_server(server); | |
607 | *volume = volnum; | |
608 | ||
609 | server->name_space[volnum] = ncp_get_known_namespace(server, volnum); | |
610 | ||
611 | DPRINTK("lookup_vol: namespace[%d] = %d\n", | |
612 | volnum, server->name_space[volnum]); | |
613 | ||
614 | return 0; | |
615 | } | |
616 | ||
617 | int | |
618 | ncp_lookup_volume(struct ncp_server *server, const char *volname, | |
619 | struct nw_info_struct *target) | |
620 | { | |
621 | int result; | |
622 | ||
623 | memset(target, 0, sizeof(*target)); | |
624 | result = ncp_get_volume_root(server, volname, | |
625 | &target->volNumber, &target->dirEntNum, &target->DosDirNum); | |
626 | if (result) { | |
627 | return result; | |
628 | } | |
629 | target->nameLen = strlen(volname); | |
630 | memcpy(target->entryName, volname, target->nameLen+1); | |
631 | target->attributes = aDIR; | |
632 | /* set dates to Jan 1, 1986 00:00 */ | |
633 | target->creationTime = target->modifyTime = cpu_to_le16(0x0000); | |
634 | target->creationDate = target->modifyDate = target->lastAccessDate = cpu_to_le16(0x0C21); | |
635 | target->nfs.mode = 0; | |
636 | return 0; | |
637 | } | |
638 | ||
639 | int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *server, | |
640 | struct inode *dir, | |
641 | const char *path, | |
642 | __le32 info_mask, | |
643 | const struct nw_modify_dos_info *info) | |
644 | { | |
645 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
646 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
647 | int result; | |
648 | ||
649 | ncp_init_request(server); | |
650 | ncp_add_byte(server, 7); /* subfunction */ | |
651 | ncp_add_byte(server, server->name_space[volnum]); | |
652 | ncp_add_byte(server, 0); /* reserved */ | |
653 | ncp_add_word(server, cpu_to_le16(0x8006)); /* search attribs: all */ | |
654 | ||
655 | ncp_add_dword(server, info_mask); | |
656 | ncp_add_mem(server, info, sizeof(*info)); | |
657 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
658 | ||
659 | result = ncp_request(server, 87); | |
660 | ncp_unlock_server(server); | |
661 | return result; | |
662 | } | |
663 | ||
664 | int ncp_modify_file_or_subdir_dos_info(struct ncp_server *server, | |
665 | struct inode *dir, | |
666 | __le32 info_mask, | |
667 | const struct nw_modify_dos_info *info) | |
668 | { | |
669 | return ncp_modify_file_or_subdir_dos_info_path(server, dir, NULL, | |
670 | info_mask, info); | |
671 | } | |
672 | ||
673 | #ifdef CONFIG_NCPFS_NFS_NS | |
674 | int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, | |
675 | __u32 mode, __u32 rdev) | |
676 | ||
677 | { | |
678 | int result = 0; | |
679 | ||
680 | if (server->name_space[volnum] == NW_NS_NFS) { | |
681 | ncp_init_request(server); | |
682 | ncp_add_byte(server, 25); /* subfunction */ | |
683 | ncp_add_byte(server, server->name_space[volnum]); | |
684 | ncp_add_byte(server, NW_NS_NFS); | |
685 | ncp_add_byte(server, volnum); | |
686 | ncp_add_dword(server, dirent); | |
687 | /* we must always operate on both nlinks and rdev, otherwise | |
688 | rdev is not set */ | |
689 | ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); | |
690 | ncp_add_dword_lh(server, mode); | |
691 | ncp_add_dword_lh(server, 1); /* nlinks */ | |
692 | ncp_add_dword_lh(server, rdev); | |
693 | result = ncp_request(server, 87); | |
694 | ncp_unlock_server(server); | |
695 | } | |
696 | return result; | |
697 | } | |
698 | #endif | |
699 | ||
700 | ||
701 | static int | |
702 | ncp_DeleteNSEntry(struct ncp_server *server, | |
703 | __u8 have_dir_base, __u8 volnum, __le32 dirent, | |
704 | char* name, __u8 ns, __le16 attr) | |
705 | { | |
706 | int result; | |
707 | ||
708 | ncp_init_request(server); | |
709 | ncp_add_byte(server, 8); /* subfunction */ | |
710 | ncp_add_byte(server, ns); | |
711 | ncp_add_byte(server, 0); /* reserved */ | |
712 | ncp_add_word(server, attr); /* search attribs: all */ | |
713 | ncp_add_handle_path(server, volnum, dirent, have_dir_base, name); | |
714 | ||
715 | result = ncp_request(server, 87); | |
716 | ncp_unlock_server(server); | |
717 | return result; | |
718 | } | |
719 | ||
720 | int | |
721 | ncp_del_file_or_subdir2(struct ncp_server *server, | |
722 | struct dentry *dentry) | |
723 | { | |
724 | struct inode *inode = dentry->d_inode; | |
725 | __u8 volnum; | |
726 | __le32 dirent; | |
727 | ||
728 | if (!inode) { | |
729 | #ifdef CONFIG_NCPFS_DEBUGDENTRY | |
730 | PRINTK("ncpfs: ncpdel2: dentry->d_inode == NULL\n"); | |
731 | #endif | |
732 | return 0xFF; /* Any error */ | |
733 | } | |
734 | volnum = NCP_FINFO(inode)->volNumber; | |
735 | dirent = NCP_FINFO(inode)->DosDirNum; | |
736 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); | |
737 | } | |
738 | ||
739 | int | |
740 | ncp_del_file_or_subdir(struct ncp_server *server, | |
741 | struct inode *dir, char *name) | |
742 | { | |
743 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
744 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
745 | ||
746 | #ifdef CONFIG_NCPFS_NFS_NS | |
747 | if (server->name_space[volnum]==NW_NS_NFS) | |
748 | { | |
749 | int result; | |
750 | ||
751 | result=ncp_obtain_DOS_dir_base(server, volnum, dirent, name, &dirent); | |
752 | if (result) return result; | |
753 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); | |
754 | } | |
755 | else | |
756 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
757 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, server->name_space[volnum], cpu_to_le16(0x8006)); | |
758 | } | |
759 | ||
760 | static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6]) | |
761 | { | |
762 | __le16 *dest = (__le16 *) ret; | |
763 | dest[1] = cpu_to_le16(v0); | |
764 | dest[2] = cpu_to_le16(v1); | |
765 | dest[0] = cpu_to_le16(v0 + 1); | |
766 | return; | |
767 | } | |
768 | ||
769 | /* If both dir and name are NULL, then in target there's already a | |
770 | looked-up entry that wants to be opened. */ | |
771 | int ncp_open_create_file_or_subdir(struct ncp_server *server, | |
772 | struct inode *dir, char *name, | |
773 | int open_create_mode, | |
774 | __le32 create_attributes, | |
775 | __le16 desired_acc_rights, | |
776 | struct ncp_entry_info *target) | |
777 | { | |
778 | __le16 search_attribs = cpu_to_le16(0x0006); | |
779 | __u8 volnum; | |
780 | __le32 dirent; | |
781 | int result; | |
782 | ||
783 | volnum = NCP_FINFO(dir)->volNumber; | |
784 | dirent = NCP_FINFO(dir)->dirEntNum; | |
785 | ||
786 | if ((create_attributes & aDIR) != 0) { | |
787 | search_attribs |= cpu_to_le16(0x8000); | |
788 | } | |
789 | ncp_init_request(server); | |
790 | ncp_add_byte(server, 1); /* subfunction */ | |
791 | ncp_add_byte(server, server->name_space[volnum]); | |
792 | ncp_add_byte(server, open_create_mode); | |
793 | ncp_add_word(server, search_attribs); | |
794 | ncp_add_dword(server, RIM_ALL); | |
795 | ncp_add_dword(server, create_attributes); | |
796 | /* The desired acc rights seem to be the inherited rights mask | |
797 | for directories */ | |
798 | ncp_add_word(server, desired_acc_rights); | |
799 | ncp_add_handle_path(server, volnum, dirent, 1, name); | |
800 | ||
801 | if ((result = ncp_request(server, 87)) != 0) | |
802 | goto out; | |
803 | if (!(create_attributes & aDIR)) | |
804 | target->opened = 1; | |
805 | ||
806 | /* in target there's a new finfo to fill */ | |
807 | ncp_extract_file_info(ncp_reply_data(server, 6), &(target->i)); | |
808 | target->volume = target->i.volNumber; | |
809 | ConvertToNWfromDWORD(ncp_reply_le16(server, 0), | |
810 | ncp_reply_le16(server, 2), | |
811 | target->file_handle); | |
812 | ||
813 | ncp_unlock_server(server); | |
814 | ||
815 | (void)ncp_obtain_nfs_info(server, &(target->i)); | |
816 | return 0; | |
817 | ||
818 | out: | |
819 | ncp_unlock_server(server); | |
820 | return result; | |
821 | } | |
822 | ||
823 | int | |
824 | ncp_initialize_search(struct ncp_server *server, struct inode *dir, | |
825 | struct nw_search_sequence *target) | |
826 | { | |
827 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
828 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
829 | int result; | |
830 | ||
831 | ncp_init_request(server); | |
832 | ncp_add_byte(server, 2); /* subfunction */ | |
833 | ncp_add_byte(server, server->name_space[volnum]); | |
834 | ncp_add_byte(server, 0); /* reserved */ | |
835 | ncp_add_handle_path(server, volnum, dirent, 1, NULL); | |
836 | ||
837 | result = ncp_request(server, 87); | |
838 | if (result) | |
839 | goto out; | |
840 | memcpy(target, ncp_reply_data(server, 0), sizeof(*target)); | |
841 | ||
842 | out: | |
843 | ncp_unlock_server(server); | |
844 | return result; | |
845 | } | |
846 | ||
1da177e4 LT |
847 | int ncp_search_for_fileset(struct ncp_server *server, |
848 | struct nw_search_sequence *seq, | |
849 | int* more, | |
850 | int* cnt, | |
851 | char* buffer, | |
852 | size_t bufsize, | |
853 | char** rbuf, | |
854 | size_t* rsize) | |
855 | { | |
856 | int result; | |
857 | ||
858 | ncp_init_request(server); | |
859 | ncp_add_byte(server, 20); | |
860 | ncp_add_byte(server, server->name_space[seq->volNumber]); | |
861 | ncp_add_byte(server, 0); /* datastream */ | |
862 | ncp_add_word(server, cpu_to_le16(0x8006)); | |
863 | ncp_add_dword(server, RIM_ALL); | |
864 | ncp_add_word(server, cpu_to_le16(32767)); /* max returned items */ | |
865 | ncp_add_mem(server, seq, 9); | |
866 | #ifdef CONFIG_NCPFS_NFS_NS | |
867 | if (server->name_space[seq->volNumber] == NW_NS_NFS) { | |
868 | ncp_add_byte(server, 0); /* 0 byte pattern */ | |
869 | } else | |
870 | #endif | |
871 | { | |
872 | ncp_add_byte(server, 2); /* 2 byte pattern */ | |
873 | ncp_add_byte(server, 0xff); /* following is a wildcard */ | |
874 | ncp_add_byte(server, '*'); | |
875 | } | |
876 | result = ncp_request2(server, 87, buffer, bufsize); | |
877 | if (result) { | |
878 | ncp_unlock_server(server); | |
879 | return result; | |
880 | } | |
881 | if (server->ncp_reply_size < 12) { | |
882 | ncp_unlock_server(server); | |
883 | return 0xFF; | |
884 | } | |
885 | *rsize = server->ncp_reply_size - 12; | |
886 | ncp_unlock_server(server); | |
887 | buffer = buffer + sizeof(struct ncp_reply_header); | |
888 | *rbuf = buffer + 12; | |
889 | *cnt = WVAL_LH(buffer + 10); | |
890 | *more = BVAL(buffer + 9); | |
891 | memcpy(seq, buffer, 9); | |
892 | return 0; | |
893 | } | |
894 | ||
895 | static int | |
896 | ncp_RenameNSEntry(struct ncp_server *server, | |
897 | struct inode *old_dir, char *old_name, __le16 old_type, | |
898 | struct inode *new_dir, char *new_name) | |
899 | { | |
900 | int result = -EINVAL; | |
901 | ||
902 | if ((old_dir == NULL) || (old_name == NULL) || | |
903 | (new_dir == NULL) || (new_name == NULL)) | |
904 | goto out; | |
905 | ||
906 | ncp_init_request(server); | |
907 | ncp_add_byte(server, 4); /* subfunction */ | |
908 | ncp_add_byte(server, server->name_space[NCP_FINFO(old_dir)->volNumber]); | |
909 | ncp_add_byte(server, 1); /* rename flag */ | |
910 | ncp_add_word(server, old_type); /* search attributes */ | |
911 | ||
912 | /* source Handle Path */ | |
913 | ncp_add_byte(server, NCP_FINFO(old_dir)->volNumber); | |
914 | ncp_add_dword(server, NCP_FINFO(old_dir)->dirEntNum); | |
915 | ncp_add_byte(server, 1); | |
916 | ncp_add_byte(server, 1); /* 1 source component */ | |
917 | ||
918 | /* dest Handle Path */ | |
919 | ncp_add_byte(server, NCP_FINFO(new_dir)->volNumber); | |
920 | ncp_add_dword(server, NCP_FINFO(new_dir)->dirEntNum); | |
921 | ncp_add_byte(server, 1); | |
922 | ncp_add_byte(server, 1); /* 1 destination component */ | |
923 | ||
924 | /* source path string */ | |
925 | ncp_add_pstring(server, old_name); | |
926 | /* dest path string */ | |
927 | ncp_add_pstring(server, new_name); | |
928 | ||
929 | result = ncp_request(server, 87); | |
930 | ncp_unlock_server(server); | |
931 | out: | |
932 | return result; | |
933 | } | |
934 | ||
935 | int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, | |
936 | struct inode *old_dir, char *old_name, | |
937 | struct inode *new_dir, char *new_name) | |
938 | { | |
939 | int result; | |
940 | __le16 old_type = cpu_to_le16(0x06); | |
941 | ||
942 | /* If somebody can do it atomic, call me... vandrove@vc.cvut.cz */ | |
943 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
944 | new_dir, new_name); | |
945 | if (result == 0xFF) /* File Not Found, try directory */ | |
946 | { | |
947 | old_type = cpu_to_le16(0x16); | |
948 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
949 | new_dir, new_name); | |
950 | } | |
951 | if (result != 0x92) return result; /* All except NO_FILES_RENAMED */ | |
952 | result = ncp_del_file_or_subdir(server, new_dir, new_name); | |
953 | if (result != 0) return -EACCES; | |
954 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
955 | new_dir, new_name); | |
956 | return result; | |
957 | } | |
958 | ||
959 | ||
960 | /* We have to transfer to/from user space */ | |
961 | int | |
962 | ncp_read_kernel(struct ncp_server *server, const char *file_id, | |
963 | __u32 offset, __u16 to_read, char *target, int *bytes_read) | |
964 | { | |
965 | char *source; | |
966 | int result; | |
967 | ||
968 | ncp_init_request(server); | |
969 | ncp_add_byte(server, 0); | |
970 | ncp_add_mem(server, file_id, 6); | |
971 | ncp_add_be32(server, offset); | |
972 | ncp_add_be16(server, to_read); | |
973 | ||
974 | if ((result = ncp_request(server, 72)) != 0) { | |
975 | goto out; | |
976 | } | |
977 | *bytes_read = ncp_reply_be16(server, 0); | |
978 | source = ncp_reply_data(server, 2 + (offset & 1)); | |
979 | ||
980 | memcpy(target, source, *bytes_read); | |
981 | out: | |
982 | ncp_unlock_server(server); | |
983 | return result; | |
984 | } | |
985 | ||
986 | /* There is a problem... egrep and some other silly tools do: | |
987 | x = mmap(NULL, MAP_PRIVATE, PROT_READ|PROT_WRITE, <ncpfs fd>, 32768); | |
988 | read(<ncpfs fd>, x, 32768); | |
989 | Now copying read result by copy_to_user causes pagefault. This pagefault | |
990 | could not be handled because of server was locked due to read. So we have | |
991 | to use temporary buffer. So ncp_unlock_server must be done before | |
992 | copy_to_user (and for write, copy_from_user must be done before | |
993 | ncp_init_request... same applies for send raw packet ioctl). Because of | |
994 | file is normally read in bigger chunks, caller provides kmalloced | |
995 | (vmalloced) chunk of memory with size >= to_read... | |
996 | */ | |
997 | int | |
998 | ncp_read_bounce(struct ncp_server *server, const char *file_id, | |
999 | __u32 offset, __u16 to_read, char __user *target, int *bytes_read, | |
1000 | void* bounce, __u32 bufsize) | |
1001 | { | |
1002 | int result; | |
1003 | ||
1004 | ncp_init_request(server); | |
1005 | ncp_add_byte(server, 0); | |
1006 | ncp_add_mem(server, file_id, 6); | |
1007 | ncp_add_be32(server, offset); | |
1008 | ncp_add_be16(server, to_read); | |
1009 | result = ncp_request2(server, 72, bounce, bufsize); | |
1010 | ncp_unlock_server(server); | |
1011 | if (!result) { | |
1012 | int len = be16_to_cpu(get_unaligned((__be16*)((char*)bounce + | |
1013 | sizeof(struct ncp_reply_header)))); | |
1014 | result = -EIO; | |
1015 | if (len <= to_read) { | |
1016 | char* source; | |
1017 | ||
1018 | source = (char*)bounce + | |
1019 | sizeof(struct ncp_reply_header) + 2 + | |
1020 | (offset & 1); | |
1021 | *bytes_read = len; | |
1022 | result = 0; | |
1023 | if (copy_to_user(target, source, len)) | |
1024 | result = -EFAULT; | |
1025 | } | |
1026 | } | |
1027 | return result; | |
1028 | } | |
1029 | ||
1030 | int | |
1031 | ncp_write_kernel(struct ncp_server *server, const char *file_id, | |
1032 | __u32 offset, __u16 to_write, | |
1033 | const char *source, int *bytes_written) | |
1034 | { | |
1035 | int result; | |
1036 | ||
1037 | ncp_init_request(server); | |
1038 | ncp_add_byte(server, 0); | |
1039 | ncp_add_mem(server, file_id, 6); | |
1040 | ncp_add_be32(server, offset); | |
1041 | ncp_add_be16(server, to_write); | |
1042 | ncp_add_mem(server, source, to_write); | |
1043 | ||
1044 | if ((result = ncp_request(server, 73)) == 0) | |
1045 | *bytes_written = to_write; | |
1046 | ncp_unlock_server(server); | |
1047 | return result; | |
1048 | } | |
1049 | ||
1050 | #ifdef CONFIG_NCPFS_IOCTL_LOCKING | |
1051 | int | |
1052 | ncp_LogPhysicalRecord(struct ncp_server *server, const char *file_id, | |
1053 | __u8 locktype, __u32 offset, __u32 length, __u16 timeout) | |
1054 | { | |
1055 | int result; | |
1056 | ||
1057 | ncp_init_request(server); | |
1058 | ncp_add_byte(server, locktype); | |
1059 | ncp_add_mem(server, file_id, 6); | |
1060 | ncp_add_be32(server, offset); | |
1061 | ncp_add_be32(server, length); | |
1062 | ncp_add_be16(server, timeout); | |
1063 | ||
1064 | if ((result = ncp_request(server, 0x1A)) != 0) | |
1065 | { | |
1066 | ncp_unlock_server(server); | |
1067 | return result; | |
1068 | } | |
1069 | ncp_unlock_server(server); | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | int | |
1074 | ncp_ClearPhysicalRecord(struct ncp_server *server, const char *file_id, | |
1075 | __u32 offset, __u32 length) | |
1076 | { | |
1077 | int result; | |
1078 | ||
1079 | ncp_init_request(server); | |
1080 | ncp_add_byte(server, 0); /* who knows... lanalyzer says that */ | |
1081 | ncp_add_mem(server, file_id, 6); | |
1082 | ncp_add_be32(server, offset); | |
1083 | ncp_add_be32(server, length); | |
1084 | ||
1085 | if ((result = ncp_request(server, 0x1E)) != 0) | |
1086 | { | |
1087 | ncp_unlock_server(server); | |
1088 | return result; | |
1089 | } | |
1090 | ncp_unlock_server(server); | |
1091 | return 0; | |
1092 | } | |
1093 | #endif /* CONFIG_NCPFS_IOCTL_LOCKING */ | |
1094 | ||
1095 | #ifdef CONFIG_NCPFS_NLS | |
1096 | /* This are the NLS conversion routines with inspirations and code parts | |
1097 | * from the vfat file system and hints from Petr Vandrovec. | |
1098 | */ | |
1099 | ||
1100 | int | |
1101 | ncp__io2vol(struct ncp_server *server, unsigned char *vname, unsigned int *vlen, | |
1102 | const unsigned char *iname, unsigned int ilen, int cc) | |
1103 | { | |
1104 | struct nls_table *in = server->nls_io; | |
1105 | struct nls_table *out = server->nls_vol; | |
1106 | unsigned char *vname_start; | |
1107 | unsigned char *vname_end; | |
1108 | const unsigned char *iname_end; | |
1109 | ||
1110 | iname_end = iname + ilen; | |
1111 | vname_start = vname; | |
1112 | vname_end = vname + *vlen - 1; | |
1113 | ||
1114 | while (iname < iname_end) { | |
1115 | int chl; | |
1116 | wchar_t ec; | |
1117 | ||
1118 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { | |
1119 | int k; | |
1120 | ||
1121 | k = utf8_mbtowc(&ec, iname, iname_end - iname); | |
1122 | if (k < 0) | |
1123 | return -EINVAL; | |
1124 | iname += k; | |
1125 | } else { | |
1126 | if (*iname == NCP_ESC) { | |
1127 | int k; | |
1128 | ||
1129 | if (iname_end - iname < 5) | |
1130 | goto nospec; | |
1131 | ||
1132 | ec = 0; | |
1133 | for (k = 1; k < 5; k++) { | |
1134 | unsigned char nc; | |
1135 | ||
1136 | nc = iname[k] - '0'; | |
1137 | if (nc >= 10) { | |
1138 | nc -= 'A' - '0' - 10; | |
1139 | if ((nc < 10) || (nc > 15)) { | |
1140 | goto nospec; | |
1141 | } | |
1142 | } | |
1143 | ec = (ec << 4) | nc; | |
1144 | } | |
1145 | iname += 5; | |
1146 | } else { | |
1147 | nospec:; | |
1148 | if ( (chl = in->char2uni(iname, iname_end - iname, &ec)) < 0) | |
1149 | return chl; | |
1150 | iname += chl; | |
1151 | } | |
1152 | } | |
1153 | ||
1154 | /* unitoupper should be here! */ | |
1155 | ||
1156 | chl = out->uni2char(ec, vname, vname_end - vname); | |
1157 | if (chl < 0) | |
1158 | return chl; | |
1159 | ||
1160 | /* this is wrong... */ | |
1161 | if (cc) { | |
1162 | int chi; | |
1163 | ||
1164 | for (chi = 0; chi < chl; chi++){ | |
1165 | vname[chi] = ncp_toupper(out, vname[chi]); | |
1166 | } | |
1167 | } | |
1168 | vname += chl; | |
1169 | } | |
1170 | ||
1171 | *vname = 0; | |
1172 | *vlen = vname - vname_start; | |
1173 | return 0; | |
1174 | } | |
1175 | ||
1176 | int | |
1177 | ncp__vol2io(struct ncp_server *server, unsigned char *iname, unsigned int *ilen, | |
1178 | const unsigned char *vname, unsigned int vlen, int cc) | |
1179 | { | |
1180 | struct nls_table *in = server->nls_vol; | |
1181 | struct nls_table *out = server->nls_io; | |
1182 | const unsigned char *vname_end; | |
1183 | unsigned char *iname_start; | |
1184 | unsigned char *iname_end; | |
1185 | unsigned char *vname_cc; | |
1186 | int err; | |
1187 | ||
1188 | vname_cc = NULL; | |
1189 | ||
1190 | if (cc) { | |
1191 | int i; | |
1192 | ||
1193 | /* this is wrong! */ | |
1194 | vname_cc = kmalloc(vlen, GFP_KERNEL); | |
1195 | if (!vname_cc) | |
1196 | return -ENOMEM; | |
1197 | for (i = 0; i < vlen; i++) | |
1198 | vname_cc[i] = ncp_tolower(in, vname[i]); | |
1199 | vname = vname_cc; | |
1200 | } | |
1201 | ||
1202 | iname_start = iname; | |
1203 | iname_end = iname + *ilen - 1; | |
1204 | vname_end = vname + vlen; | |
1205 | ||
1206 | while (vname < vname_end) { | |
1207 | wchar_t ec; | |
1208 | int chl; | |
1209 | ||
1210 | if ( (chl = in->char2uni(vname, vname_end - vname, &ec)) < 0) { | |
1211 | err = chl; | |
1212 | goto quit; | |
1213 | } | |
1214 | vname += chl; | |
1215 | ||
1216 | /* unitolower should be here! */ | |
1217 | ||
1218 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { | |
1219 | int k; | |
1220 | ||
1221 | k = utf8_wctomb(iname, ec, iname_end - iname); | |
1222 | if (k < 0) { | |
1223 | err = -ENAMETOOLONG; | |
1224 | goto quit; | |
1225 | } | |
1226 | iname += k; | |
1227 | } else { | |
1228 | if ( (chl = out->uni2char(ec, iname, iname_end - iname)) >= 0) { | |
1229 | iname += chl; | |
1230 | } else { | |
1231 | int k; | |
1232 | ||
1233 | if (iname_end - iname < 5) { | |
1234 | err = -ENAMETOOLONG; | |
1235 | goto quit; | |
1236 | } | |
1237 | *iname = NCP_ESC; | |
1238 | for (k = 4; k > 0; k--) { | |
1239 | unsigned char v; | |
1240 | ||
1241 | v = (ec & 0xF) + '0'; | |
1242 | if (v > '9') { | |
1243 | v += 'A' - '9' - 1; | |
1244 | } | |
1245 | iname[k] = v; | |
1246 | ec >>= 4; | |
1247 | } | |
1248 | iname += 5; | |
1249 | } | |
1250 | } | |
1251 | } | |
1252 | ||
1253 | *iname = 0; | |
1254 | *ilen = iname - iname_start; | |
1255 | err = 0; | |
1256 | quit:; | |
1257 | if (cc) | |
1258 | kfree(vname_cc); | |
1259 | return err; | |
1260 | } | |
1261 | ||
1262 | #else | |
1263 | ||
1264 | int | |
1265 | ncp__io2vol(unsigned char *vname, unsigned int *vlen, | |
1266 | const unsigned char *iname, unsigned int ilen, int cc) | |
1267 | { | |
1268 | int i; | |
1269 | ||
1270 | if (*vlen <= ilen) | |
1271 | return -ENAMETOOLONG; | |
1272 | ||
1273 | if (cc) | |
1274 | for (i = 0; i < ilen; i++) { | |
1275 | *vname = toupper(*iname); | |
1276 | vname++; | |
1277 | iname++; | |
1278 | } | |
1279 | else { | |
1280 | memmove(vname, iname, ilen); | |
1281 | vname += ilen; | |
1282 | } | |
1283 | ||
1284 | *vlen = ilen; | |
1285 | *vname = 0; | |
1286 | return 0; | |
1287 | } | |
1288 | ||
1289 | int | |
1290 | ncp__vol2io(unsigned char *iname, unsigned int *ilen, | |
1291 | const unsigned char *vname, unsigned int vlen, int cc) | |
1292 | { | |
1293 | int i; | |
1294 | ||
1295 | if (*ilen <= vlen) | |
1296 | return -ENAMETOOLONG; | |
1297 | ||
1298 | if (cc) | |
1299 | for (i = 0; i < vlen; i++) { | |
1300 | *iname = tolower(*vname); | |
1301 | iname++; | |
1302 | vname++; | |
1303 | } | |
1304 | else { | |
1305 | memmove(iname, vname, vlen); | |
1306 | iname += vlen; | |
1307 | } | |
1308 | ||
1309 | *ilen = vlen; | |
1310 | *iname = 0; | |
1311 | return 0; | |
1312 | } | |
1313 | ||
1314 | #endif |