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[CONNECTOR]: Use netlink_has_listeners() to avoind unnecessary allocations.
[linux-2.6/verdex.git] / fs / ncpfs / ncplib_kernel.c
blobc755e1848a42366d0a08d4e379680b3fc2665a86
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
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
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