git://bbs.cooldavid.org / net-next-2.6.git / blame
| 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 | ||
| 848 | /* Search for everything */ | |
| 849 | int ncp_search_for_file_or_subdir(struct ncp_server *server, | |
| 850 | struct nw_search_sequence *seq, | |
| 851 | struct nw_info_struct *target) | |
| 852 | { | |
| 853 | int result; | |
| 854 | ||
| 855 | ncp_init_request(server); | |
| 856 | ncp_add_byte(server, 3); /* subfunction */ | |
| 857 | ncp_add_byte(server, server->name_space[seq->volNumber]); | |
| 858 | ncp_add_byte(server, 0); /* data stream (???) */ | |
| 859 | ncp_add_word(server, cpu_to_le16(0x8006)); /* Search attribs */ | |
| 860 | ncp_add_dword(server, RIM_ALL); /* return info mask */ | |
| 861 | ncp_add_mem(server, seq, 9); | |
| 862 | #ifdef CONFIG_NCPFS_NFS_NS | |
| 863 | if (server->name_space[seq->volNumber] == NW_NS_NFS) { | |
| 864 | ncp_add_byte(server, 0); /* 0 byte pattern */ | |
| 865 | } else | |
| 866 | #endif | |
| 867 | { | |
| 868 | ncp_add_byte(server, 2); /* 2 byte pattern */ | |
| 869 | ncp_add_byte(server, 0xff); /* following is a wildcard */ | |
| 870 | ncp_add_byte(server, '*'); | |
| 871 | } | |
| 872 | ||
| 873 | if ((result = ncp_request(server, 87)) != 0) | |
| 874 | goto out; | |
| 875 | memcpy(seq, ncp_reply_data(server, 0), sizeof(*seq)); | |
| 876 | ncp_extract_file_info(ncp_reply_data(server, 10), target); | |
| 877 | ||
| 878 | ncp_unlock_server(server); | |
| 879 | ||
| 880 | result = ncp_obtain_nfs_info(server, target); | |
| 881 | return result; | |
| 882 | ||
| 883 | out: | |
| 884 | ncp_unlock_server(server); | |
| 885 | return result; | |
| 886 | } | |
| 887 | ||
| 888 | int ncp_search_for_fileset(struct ncp_server *server, | |
| 889 | struct nw_search_sequence *seq, | |
| 890 | int* more, | |
| 891 | int* cnt, | |
| 892 | char* buffer, | |
| 893 | size_t bufsize, | |
| 894 | char** rbuf, | |
| 895 | size_t* rsize) | |
| 896 | { | |
| 897 | int result; | |
| 898 | ||
| 899 | ncp_init_request(server); | |
| 900 | ncp_add_byte(server, 20); | |
| 901 | ncp_add_byte(server, server->name_space[seq->volNumber]); | |
| 902 | ncp_add_byte(server, 0); /* datastream */ | |
| 903 | ncp_add_word(server, cpu_to_le16(0x8006)); | |
| 904 | ncp_add_dword(server, RIM_ALL); | |
| 905 | ncp_add_word(server, cpu_to_le16(32767)); /* max returned items */ | |
| 906 | ncp_add_mem(server, seq, 9); | |
| 907 | #ifdef CONFIG_NCPFS_NFS_NS | |
| 908 | if (server->name_space[seq->volNumber] == NW_NS_NFS) { | |
| 909 | ncp_add_byte(server, 0); /* 0 byte pattern */ | |
| 910 | } else | |
| 911 | #endif | |
| 912 | { | |
| 913 | ncp_add_byte(server, 2); /* 2 byte pattern */ | |
| 914 | ncp_add_byte(server, 0xff); /* following is a wildcard */ | |
| 915 | ncp_add_byte(server, '*'); | |
| 916 | } | |
| 917 | result = ncp_request2(server, 87, buffer, bufsize); | |
| 918 | if (result) { | |
| 919 | ncp_unlock_server(server); | |
| 920 | return result; | |
| 921 | } | |
| 922 | if (server->ncp_reply_size < 12) { | |
| 923 | ncp_unlock_server(server); | |
| 924 | return 0xFF; | |
| 925 | } | |
| 926 | *rsize = server->ncp_reply_size - 12; | |
| 927 | ncp_unlock_server(server); | |
| 928 | buffer = buffer + sizeof(struct ncp_reply_header); | |
| 929 | *rbuf = buffer + 12; | |
| 930 | *cnt = WVAL_LH(buffer + 10); | |
| 931 | *more = BVAL(buffer + 9); | |
| 932 | memcpy(seq, buffer, 9); | |
| 933 | return 0; | |
| 934 | } | |
| 935 | ||
| 936 | static int | |
| 937 | ncp_RenameNSEntry(struct ncp_server *server, | |
| 938 | struct inode *old_dir, char *old_name, __le16 old_type, | |
| 939 | struct inode *new_dir, char *new_name) | |
| 940 | { | |
| 941 | int result = -EINVAL; | |
| 942 | ||
| 943 | if ((old_dir == NULL) || (old_name == NULL) || | |
| 944 | (new_dir == NULL) || (new_name == NULL)) | |
| 945 | goto out; | |
| 946 | ||
| 947 | ncp_init_request(server); | |
| 948 | ncp_add_byte(server, 4); /* subfunction */ | |
| 949 | ncp_add_byte(server, server->name_space[NCP_FINFO(old_dir)->volNumber]); | |
| 950 | ncp_add_byte(server, 1); /* rename flag */ | |
| 951 | ncp_add_word(server, old_type); /* search attributes */ | |
| 952 | ||
| 953 | /* source Handle Path */ | |
| 954 | ncp_add_byte(server, NCP_FINFO(old_dir)->volNumber); | |
| 955 | ncp_add_dword(server, NCP_FINFO(old_dir)->dirEntNum); | |
| 956 | ncp_add_byte(server, 1); | |
| 957 | ncp_add_byte(server, 1); /* 1 source component */ | |
| 958 | ||
| 959 | /* dest Handle Path */ | |
| 960 | ncp_add_byte(server, NCP_FINFO(new_dir)->volNumber); | |
| 961 | ncp_add_dword(server, NCP_FINFO(new_dir)->dirEntNum); | |
| 962 | ncp_add_byte(server, 1); | |
| 963 | ncp_add_byte(server, 1); /* 1 destination component */ | |
| 964 | ||
| 965 | /* source path string */ | |
| 966 | ncp_add_pstring(server, old_name); | |
| 967 | /* dest path string */ | |
| 968 | ncp_add_pstring(server, new_name); | |
| 969 | ||
| 970 | result = ncp_request(server, 87); | |
| 971 | ncp_unlock_server(server); | |
| 972 | out: | |
| 973 | return result; | |
| 974 | } | |
| 975 | ||
| 976 | int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, | |
| 977 | struct inode *old_dir, char *old_name, | |
| 978 | struct inode *new_dir, char *new_name) | |
| 979 | { | |
| 980 | int result; | |
| 981 | __le16 old_type = cpu_to_le16(0x06); | |
| 982 | ||
| 983 | /* If somebody can do it atomic, call me... vandrove@vc.cvut.cz */ | |
| 984 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
| 985 | new_dir, new_name); | |
| 986 | if (result == 0xFF) /* File Not Found, try directory */ | |
| 987 | { | |
| 988 | old_type = cpu_to_le16(0x16); | |
| 989 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
| 990 | new_dir, new_name); | |
| 991 | } | |
| 992 | if (result != 0x92) return result; /* All except NO_FILES_RENAMED */ | |
| 993 | result = ncp_del_file_or_subdir(server, new_dir, new_name); | |
| 994 | if (result != 0) return -EACCES; | |
| 995 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
| 996 | new_dir, new_name); | |
| 997 | return result; | |
| 998 | } | |
| 999 | ||
| 1000 | ||
| 1001 | /* We have to transfer to/from user space */ | |
| 1002 | int | |
| 1003 | ncp_read_kernel(struct ncp_server *server, const char *file_id, | |
| 1004 | __u32 offset, __u16 to_read, char *target, int *bytes_read) | |
| 1005 | { | |
| 1006 | char *source; | |
| 1007 | int result; | |
| 1008 | ||
| 1009 | ncp_init_request(server); | |
| 1010 | ncp_add_byte(server, 0); | |
| 1011 | ncp_add_mem(server, file_id, 6); | |
| 1012 | ncp_add_be32(server, offset); | |
| 1013 | ncp_add_be16(server, to_read); | |
| 1014 | ||
| 1015 | if ((result = ncp_request(server, 72)) != 0) { | |
| 1016 | goto out; | |
| 1017 | } | |
| 1018 | *bytes_read = ncp_reply_be16(server, 0); | |
| 1019 | source = ncp_reply_data(server, 2 + (offset & 1)); | |
| 1020 | ||
| 1021 | memcpy(target, source, *bytes_read); | |
| 1022 | out: | |
| 1023 | ncp_unlock_server(server); | |
| 1024 | return result; | |
| 1025 | } | |
| 1026 | ||
| 1027 | /* There is a problem... egrep and some other silly tools do: | |
| 1028 | x = mmap(NULL, MAP_PRIVATE, PROT_READ|PROT_WRITE, <ncpfs fd>, 32768); | |
| 1029 | read(<ncpfs fd>, x, 32768); | |
| 1030 | Now copying read result by copy_to_user causes pagefault. This pagefault | |
| 1031 | could not be handled because of server was locked due to read. So we have | |
| 1032 | to use temporary buffer. So ncp_unlock_server must be done before | |
| 1033 | copy_to_user (and for write, copy_from_user must be done before | |
| 1034 | ncp_init_request... same applies for send raw packet ioctl). Because of | |
| 1035 | file is normally read in bigger chunks, caller provides kmalloced | |
| 1036 | (vmalloced) chunk of memory with size >= to_read... | |
| 1037 | */ | |
| 1038 | int | |
| 1039 | ncp_read_bounce(struct ncp_server *server, const char *file_id, | |
| 1040 | __u32 offset, __u16 to_read, char __user *target, int *bytes_read, | |
| 1041 | void* bounce, __u32 bufsize) | |
| 1042 | { | |
| 1043 | int result; | |
| 1044 | ||
| 1045 | ncp_init_request(server); | |
| 1046 | ncp_add_byte(server, 0); | |
| 1047 | ncp_add_mem(server, file_id, 6); | |
| 1048 | ncp_add_be32(server, offset); | |
| 1049 | ncp_add_be16(server, to_read); | |
| 1050 | result = ncp_request2(server, 72, bounce, bufsize); | |
| 1051 | ncp_unlock_server(server); | |
| 1052 | if (!result) { | |
| 1053 | int len = be16_to_cpu(get_unaligned((__be16*)((char*)bounce + | |
| 1054 | sizeof(struct ncp_reply_header)))); | |
| 1055 | result = -EIO; | |
| 1056 | if (len <= to_read) { | |
| 1057 | char* source; | |
| 1058 | ||
| 1059 | source = (char*)bounce + | |
| 1060 | sizeof(struct ncp_reply_header) + 2 + | |
| 1061 | (offset & 1); | |
| 1062 | *bytes_read = len; | |
| 1063 | result = 0; | |
| 1064 | if (copy_to_user(target, source, len)) | |
| 1065 | result = -EFAULT; | |
| 1066 | } | |
| 1067 | } | |
| 1068 | return result; | |
| 1069 | } | |
| 1070 | ||
| 1071 | int | |
| 1072 | ncp_write_kernel(struct ncp_server *server, const char *file_id, | |
| 1073 | __u32 offset, __u16 to_write, | |
| 1074 | const char *source, int *bytes_written) | |
| 1075 | { | |
| 1076 | int result; | |
| 1077 | ||
| 1078 | ncp_init_request(server); | |
| 1079 | ncp_add_byte(server, 0); | |
| 1080 | ncp_add_mem(server, file_id, 6); | |
| 1081 | ncp_add_be32(server, offset); | |
| 1082 | ncp_add_be16(server, to_write); | |
| 1083 | ncp_add_mem(server, source, to_write); | |
| 1084 | ||
| 1085 | if ((result = ncp_request(server, 73)) == 0) | |
| 1086 | *bytes_written = to_write; | |
| 1087 | ncp_unlock_server(server); | |
| 1088 | return result; | |
| 1089 | } | |
| 1090 | ||
| 1091 | #ifdef CONFIG_NCPFS_IOCTL_LOCKING | |
| 1092 | int | |
| 1093 | ncp_LogPhysicalRecord(struct ncp_server *server, const char *file_id, | |
| 1094 | __u8 locktype, __u32 offset, __u32 length, __u16 timeout) | |
| 1095 | { | |
| 1096 | int result; | |
| 1097 | ||
| 1098 | ncp_init_request(server); | |
| 1099 | ncp_add_byte(server, locktype); | |
| 1100 | ncp_add_mem(server, file_id, 6); | |
| 1101 | ncp_add_be32(server, offset); | |
| 1102 | ncp_add_be32(server, length); | |
| 1103 | ncp_add_be16(server, timeout); | |
| 1104 | ||
| 1105 | if ((result = ncp_request(server, 0x1A)) != 0) | |
| 1106 | { | |
| 1107 | ncp_unlock_server(server); | |
| 1108 | return result; | |
| 1109 | } | |
| 1110 | ncp_unlock_server(server); | |
| 1111 | return 0; | |
| 1112 | } | |
| 1113 | ||
| 1114 | int | |
| 1115 | ncp_ClearPhysicalRecord(struct ncp_server *server, const char *file_id, | |
| 1116 | __u32 offset, __u32 length) | |
| 1117 | { | |
| 1118 | int result; | |
| 1119 | ||
| 1120 | ncp_init_request(server); | |
| 1121 | ncp_add_byte(server, 0); /* who knows... lanalyzer says that */ | |
| 1122 | ncp_add_mem(server, file_id, 6); | |
| 1123 | ncp_add_be32(server, offset); | |
| 1124 | ncp_add_be32(server, length); | |
| 1125 | ||
| 1126 | if ((result = ncp_request(server, 0x1E)) != 0) | |
| 1127 | { | |
| 1128 | ncp_unlock_server(server); | |
| 1129 | return result; | |
| 1130 | } | |
| 1131 | ncp_unlock_server(server); | |
| 1132 | return 0; | |
| 1133 | } | |
| 1134 | #endif /* CONFIG_NCPFS_IOCTL_LOCKING */ | |
| 1135 | ||
| 1136 | #ifdef CONFIG_NCPFS_NLS | |
| 1137 | /* This are the NLS conversion routines with inspirations and code parts | |
| 1138 | * from the vfat file system and hints from Petr Vandrovec. | |
| 1139 | */ | |
| 1140 | ||
| 1141 | int | |
| 1142 | ncp__io2vol(struct ncp_server *server, unsigned char *vname, unsigned int *vlen, | |
| 1143 | const unsigned char *iname, unsigned int ilen, int cc) | |
| 1144 | { | |
| 1145 | struct nls_table *in = server->nls_io; | |
| 1146 | struct nls_table *out = server->nls_vol; | |
| 1147 | unsigned char *vname_start; | |
| 1148 | unsigned char *vname_end; | |
| 1149 | const unsigned char *iname_end; | |
| 1150 | ||
| 1151 | iname_end = iname + ilen; | |
| 1152 | vname_start = vname; | |
| 1153 | vname_end = vname + *vlen - 1; | |
| 1154 | ||
| 1155 | while (iname < iname_end) { | |
| 1156 | int chl; | |
| 1157 | wchar_t ec; | |
| 1158 | ||
| 1159 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { | |
| 1160 | int k; | |
| 1161 | ||
| 1162 | k = utf8_mbtowc(&ec, iname, iname_end - iname); | |
| 1163 | if (k < 0) | |
| 1164 | return -EINVAL; | |
| 1165 | iname += k; | |
| 1166 | } else { | |
| 1167 | if (*iname == NCP_ESC) { | |
| 1168 | int k; | |
| 1169 | ||
| 1170 | if (iname_end - iname < 5) | |
| 1171 | goto nospec; | |
| 1172 | ||
| 1173 | ec = 0; | |
| 1174 | for (k = 1; k < 5; k++) { | |
| 1175 | unsigned char nc; | |
| 1176 | ||
| 1177 | nc = iname[k] - '0'; | |
| 1178 | if (nc >= 10) { | |
| 1179 | nc -= 'A' - '0' - 10; | |
| 1180 | if ((nc < 10) || (nc > 15)) { | |
| 1181 | goto nospec; | |
| 1182 | } | |
| 1183 | } | |
| 1184 | ec = (ec << 4) | nc; | |
| 1185 | } | |
| 1186 | iname += 5; | |
| 1187 | } else { | |
| 1188 | nospec:; | |
| 1189 | if ( (chl = in->char2uni(iname, iname_end - iname, &ec)) < 0) | |
| 1190 | return chl; | |
| 1191 | iname += chl; | |
| 1192 | } | |
| 1193 | } | |
| 1194 | ||
| 1195 | /* unitoupper should be here! */ | |
| 1196 | ||
| 1197 | chl = out->uni2char(ec, vname, vname_end - vname); | |
| 1198 | if (chl < 0) | |
| 1199 | return chl; | |
| 1200 | ||
| 1201 | /* this is wrong... */ | |
| 1202 | if (cc) { | |
| 1203 | int chi; | |
| 1204 | ||
| 1205 | for (chi = 0; chi < chl; chi++){ | |
| 1206 | vname[chi] = ncp_toupper(out, vname[chi]); | |
| 1207 | } | |
| 1208 | } | |
| 1209 | vname += chl; | |
| 1210 | } | |
| 1211 | ||
| 1212 | *vname = 0; | |
| 1213 | *vlen = vname - vname_start; | |
| 1214 | return 0; | |
| 1215 | } | |
| 1216 | ||
| 1217 | int | |
| 1218 | ncp__vol2io(struct ncp_server *server, unsigned char *iname, unsigned int *ilen, | |
| 1219 | const unsigned char *vname, unsigned int vlen, int cc) | |
| 1220 | { | |
| 1221 | struct nls_table *in = server->nls_vol; | |
| 1222 | struct nls_table *out = server->nls_io; | |
| 1223 | const unsigned char *vname_end; | |
| 1224 | unsigned char *iname_start; | |
| 1225 | unsigned char *iname_end; | |
| 1226 | unsigned char *vname_cc; | |
| 1227 | int err; | |
| 1228 | ||
| 1229 | vname_cc = NULL; | |
| 1230 | ||
| 1231 | if (cc) { | |
| 1232 | int i; | |
| 1233 | ||
| 1234 | /* this is wrong! */ | |
| 1235 | vname_cc = kmalloc(vlen, GFP_KERNEL); | |
| 1236 | if (!vname_cc) | |
| 1237 | return -ENOMEM; | |
| 1238 | for (i = 0; i < vlen; i++) | |
| 1239 | vname_cc[i] = ncp_tolower(in, vname[i]); | |
| 1240 | vname = vname_cc; | |
| 1241 | } | |
| 1242 | ||
| 1243 | iname_start = iname; | |
| 1244 | iname_end = iname + *ilen - 1; | |
| 1245 | vname_end = vname + vlen; | |
| 1246 | ||
| 1247 | while (vname < vname_end) { | |
| 1248 | wchar_t ec; | |
| 1249 | int chl; | |
| 1250 | ||
| 1251 | if ( (chl = in->char2uni(vname, vname_end - vname, &ec)) < 0) { | |
| 1252 | err = chl; | |
| 1253 | goto quit; | |
| 1254 | } | |
| 1255 | vname += chl; | |
| 1256 | ||
| 1257 | /* unitolower should be here! */ | |
| 1258 | ||
| 1259 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { | |
| 1260 | int k; | |
| 1261 | ||
| 1262 | k = utf8_wctomb(iname, ec, iname_end - iname); | |
| 1263 | if (k < 0) { | |
| 1264 | err = -ENAMETOOLONG; | |
| 1265 | goto quit; | |
| 1266 | } | |
| 1267 | iname += k; | |
| 1268 | } else { | |
| 1269 | if ( (chl = out->uni2char(ec, iname, iname_end - iname)) >= 0) { | |
| 1270 | iname += chl; | |
| 1271 | } else { | |
| 1272 | int k; | |
| 1273 | ||
| 1274 | if (iname_end - iname < 5) { | |
| 1275 | err = -ENAMETOOLONG; | |
| 1276 | goto quit; | |
| 1277 | } | |
| 1278 | *iname = NCP_ESC; | |
| 1279 | for (k = 4; k > 0; k--) { | |
| 1280 | unsigned char v; | |
| 1281 | ||
| 1282 | v = (ec & 0xF) + '0'; | |
| 1283 | if (v > '9') { | |
| 1284 | v += 'A' - '9' - 1; | |
| 1285 | } | |
| 1286 | iname[k] = v; | |
| 1287 | ec >>= 4; | |
| 1288 | } | |
| 1289 | iname += 5; | |
| 1290 | } | |
| 1291 | } | |
| 1292 | } | |
| 1293 | ||
| 1294 | *iname = 0; | |
| 1295 | *ilen = iname - iname_start; | |
| 1296 | err = 0; | |
| 1297 | quit:; | |
| 1298 | if (cc) | |
| 1299 | kfree(vname_cc); | |
| 1300 | return err; | |
| 1301 | } | |
| 1302 | ||
| 1303 | #else | |
| 1304 | ||
| 1305 | int | |
| 1306 | ncp__io2vol(unsigned char *vname, unsigned int *vlen, | |
| 1307 | const unsigned char *iname, unsigned int ilen, int cc) | |
| 1308 | { | |
| 1309 | int i; | |
| 1310 | ||
| 1311 | if (*vlen <= ilen) | |
| 1312 | return -ENAMETOOLONG; | |
| 1313 | ||
| 1314 | if (cc) | |
| 1315 | for (i = 0; i < ilen; i++) { | |
| 1316 | *vname = toupper(*iname); | |
| 1317 | vname++; | |
| 1318 | iname++; | |
| 1319 | } | |
| 1320 | else { | |
| 1321 | memmove(vname, iname, ilen); | |
| 1322 | vname += ilen; | |
| 1323 | } | |
| 1324 | ||
| 1325 | *vlen = ilen; | |
| 1326 | *vname = 0; | |
| 1327 | return 0; | |
| 1328 | } | |
| 1329 | ||
| 1330 | int | |
| 1331 | ncp__vol2io(unsigned char *iname, unsigned int *ilen, | |
| 1332 | const unsigned char *vname, unsigned int vlen, int cc) | |
| 1333 | { | |
| 1334 | int i; | |
| 1335 | ||
| 1336 | if (*ilen <= vlen) | |
| 1337 | return -ENAMETOOLONG; | |
| 1338 | ||
| 1339 | if (cc) | |
| 1340 | for (i = 0; i < vlen; i++) { | |
| 1341 | *iname = tolower(*vname); | |
| 1342 | iname++; | |
| 1343 | vname++; | |
| 1344 | } | |
| 1345 | else { | |
| 1346 | memmove(iname, vname, vlen); | |
| 1347 | iname += vlen; | |
| 1348 | } | |
| 1349 | ||
| 1350 | *ilen = vlen; | |
| 1351 | *iname = 0; | |
| 1352 | return 0; | |
| 1353 | } | |
| 1354 | ||
| 1355 | #endif |