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 | ||
| 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 * | |
| 97a4feb4 | 105 | ncp_reply_data(struct ncp_server *server, int offset) |
| 1da177e4 LT |
106 | { |
| 107 | return &(server->packet[sizeof(struct ncp_reply_header) + offset]); | |
| 108 | } | |
| 109 | ||
| 2e54eb96 | 110 | static inline u8 BVAL(const void *data) |
| 1da177e4 | 111 | { |
| 2e54eb96 | 112 | return *(const u8 *)data; |
| 1da177e4 LT |
113 | } |
| 114 | ||
| 97a4feb4 | 115 | static u8 ncp_reply_byte(struct ncp_server *server, int offset) |
| 1da177e4 | 116 | { |
| 2e54eb96 | 117 | return *(const u8 *)ncp_reply_data(server, offset); |
| 1da177e4 LT |
118 | } |
| 119 | ||
| 2e54eb96 | 120 | static inline u16 WVAL_LH(const void *data) |
| 1da177e4 | 121 | { |
| 97a4feb4 | 122 | return get_unaligned_le16(data); |
| 1da177e4 LT |
123 | } |
| 124 | ||
| 97a4feb4 HH |
125 | static u16 |
| 126 | ncp_reply_le16(struct ncp_server *server, int offset) | |
| 1da177e4 | 127 | { |
| 97a4feb4 | 128 | return get_unaligned_le16(ncp_reply_data(server, offset)); |
| 1da177e4 LT |
129 | } |
| 130 | ||
| 97a4feb4 HH |
131 | static u16 |
| 132 | ncp_reply_be16(struct ncp_server *server, int offset) | |
| 1da177e4 | 133 | { |
| 97a4feb4 | 134 | return get_unaligned_be16(ncp_reply_data(server, offset)); |
| 1da177e4 LT |
135 | } |
| 136 | ||
| 2e54eb96 | 137 | static inline u32 DVAL_LH(const void *data) |
| 1da177e4 | 138 | { |
| 97a4feb4 | 139 | return get_unaligned_le32(data); |
| 1da177e4 LT |
140 | } |
| 141 | ||
| 142 | static __le32 | |
| 97a4feb4 | 143 | ncp_reply_dword(struct ncp_server *server, int offset) |
| 1da177e4 | 144 | { |
| 97a4feb4 | 145 | return get_unaligned((__le32 *)ncp_reply_data(server, offset)); |
| 1da177e4 LT |
146 | } |
| 147 | ||
| 148 | static inline __u32 ncp_reply_dword_lh(struct ncp_server* server, int offset) { | |
| 149 | return le32_to_cpu(ncp_reply_dword(server, offset)); | |
| 150 | } | |
| 151 | ||
| 152 | int | |
| 153 | ncp_negotiate_buffersize(struct ncp_server *server, int size, int *target) | |
| 154 | { | |
| 155 | int result; | |
| 156 | ||
| 157 | ncp_init_request(server); | |
| 158 | ncp_add_be16(server, size); | |
| 159 | ||
| 160 | if ((result = ncp_request(server, 33)) != 0) { | |
| 161 | ncp_unlock_server(server); | |
| 162 | return result; | |
| 163 | } | |
| 164 | *target = min_t(unsigned int, ncp_reply_be16(server, 0), size); | |
| 165 | ||
| 166 | ncp_unlock_server(server); | |
| 167 | return 0; | |
| 168 | } | |
| 169 | ||
| 170 | ||
| 171 | /* options: | |
| 172 | * bit 0 ipx checksum | |
| 173 | * bit 1 packet signing | |
| 174 | */ | |
| 175 | int | |
| 176 | ncp_negotiate_size_and_options(struct ncp_server *server, | |
| 177 | int size, int options, int *ret_size, int *ret_options) { | |
| 178 | int result; | |
| 179 | ||
| 180 | /* there is minimum */ | |
| 181 | if (size < NCP_BLOCK_SIZE) size = NCP_BLOCK_SIZE; | |
| 182 | ||
| 183 | ncp_init_request(server); | |
| 184 | ncp_add_be16(server, size); | |
| 185 | ncp_add_byte(server, options); | |
| 186 | ||
| 187 | if ((result = ncp_request(server, 0x61)) != 0) | |
| 188 | { | |
| 189 | ncp_unlock_server(server); | |
| 190 | return result; | |
| 191 | } | |
| 192 | ||
| 193 | /* NCP over UDP returns 0 (!!!) */ | |
| 194 | result = ncp_reply_be16(server, 0); | |
| 195 | if (result >= NCP_BLOCK_SIZE) | |
| 196 | size = min(result, size); | |
| 197 | *ret_size = size; | |
| 198 | *ret_options = ncp_reply_byte(server, 4); | |
| 199 | ||
| 200 | ncp_unlock_server(server); | |
| 201 | return 0; | |
| 202 | } | |
| 203 | ||
| 204 | int ncp_get_volume_info_with_number(struct ncp_server* server, | |
| 205 | int n, struct ncp_volume_info* target) { | |
| 206 | int result; | |
| 207 | int len; | |
| 208 | ||
| 209 | ncp_init_request_s(server, 44); | |
| 210 | ncp_add_byte(server, n); | |
| 211 | ||
| 212 | if ((result = ncp_request(server, 22)) != 0) { | |
| 213 | goto out; | |
| 214 | } | |
| 215 | target->total_blocks = ncp_reply_dword_lh(server, 0); | |
| 216 | target->free_blocks = ncp_reply_dword_lh(server, 4); | |
| 217 | target->purgeable_blocks = ncp_reply_dword_lh(server, 8); | |
| 218 | target->not_yet_purgeable_blocks = ncp_reply_dword_lh(server, 12); | |
| 219 | target->total_dir_entries = ncp_reply_dword_lh(server, 16); | |
| 220 | target->available_dir_entries = ncp_reply_dword_lh(server, 20); | |
| 221 | target->sectors_per_block = ncp_reply_byte(server, 28); | |
| 222 | ||
| 223 | memset(&(target->volume_name), 0, sizeof(target->volume_name)); | |
| 224 | ||
| 225 | result = -EIO; | |
| 226 | len = ncp_reply_byte(server, 29); | |
| 227 | if (len > NCP_VOLNAME_LEN) { | |
| 228 | DPRINTK("ncpfs: volume name too long: %d\n", len); | |
| 229 | goto out; | |
| 230 | } | |
| 231 | memcpy(&(target->volume_name), ncp_reply_data(server, 30), len); | |
| 232 | result = 0; | |
| 233 | out: | |
| 234 | ncp_unlock_server(server); | |
| 235 | return result; | |
| 236 | } | |
| 237 | ||
| 238 | int ncp_get_directory_info(struct ncp_server* server, __u8 n, | |
| 239 | struct ncp_volume_info* target) { | |
| 240 | int result; | |
| 241 | int len; | |
| 242 | ||
| 243 | ncp_init_request_s(server, 45); | |
| 244 | ncp_add_byte(server, n); | |
| 245 | ||
| 246 | if ((result = ncp_request(server, 22)) != 0) { | |
| 247 | goto out; | |
| 248 | } | |
| 249 | target->total_blocks = ncp_reply_dword_lh(server, 0); | |
| 250 | target->free_blocks = ncp_reply_dword_lh(server, 4); | |
| 251 | target->purgeable_blocks = 0; | |
| 252 | target->not_yet_purgeable_blocks = 0; | |
| 253 | target->total_dir_entries = ncp_reply_dword_lh(server, 8); | |
| 254 | target->available_dir_entries = ncp_reply_dword_lh(server, 12); | |
| 255 | target->sectors_per_block = ncp_reply_byte(server, 20); | |
| 256 | ||
| 257 | memset(&(target->volume_name), 0, sizeof(target->volume_name)); | |
| 258 | ||
| 259 | result = -EIO; | |
| 260 | len = ncp_reply_byte(server, 21); | |
| 261 | if (len > NCP_VOLNAME_LEN) { | |
| 262 | DPRINTK("ncpfs: volume name too long: %d\n", len); | |
| 263 | goto out; | |
| 264 | } | |
| 265 | memcpy(&(target->volume_name), ncp_reply_data(server, 22), len); | |
| 266 | result = 0; | |
| 267 | out: | |
| 268 | ncp_unlock_server(server); | |
| 269 | return result; | |
| 270 | } | |
| 271 | ||
| 272 | int | |
| 273 | ncp_close_file(struct ncp_server *server, const char *file_id) | |
| 274 | { | |
| 275 | int result; | |
| 276 | ||
| 277 | ncp_init_request(server); | |
| 278 | ncp_add_byte(server, 0); | |
| 279 | ncp_add_mem(server, file_id, 6); | |
| 280 | ||
| 281 | result = ncp_request(server, 66); | |
| 282 | ncp_unlock_server(server); | |
| 283 | return result; | |
| 284 | } | |
| 285 | ||
| 286 | int | |
| 287 | ncp_make_closed(struct inode *inode) | |
| 288 | { | |
| 289 | int err; | |
| 290 | ||
| 291 | err = 0; | |
| 8e3f9045 | 292 | mutex_lock(&NCP_FINFO(inode)->open_mutex); |
| 1da177e4 LT |
293 | if (atomic_read(&NCP_FINFO(inode)->opened) == 1) { |
| 294 | atomic_set(&NCP_FINFO(inode)->opened, 0); | |
| 295 | err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle); | |
| 296 | ||
| 297 | if (!err) | |
| 298 | PPRINTK("ncp_make_closed: volnum=%d, dirent=%u, error=%d\n", | |
| 299 | NCP_FINFO(inode)->volNumber, | |
| 300 | NCP_FINFO(inode)->dirEntNum, err); | |
| 301 | } | |
| 8e3f9045 | 302 | mutex_unlock(&NCP_FINFO(inode)->open_mutex); |
| 1da177e4 LT |
303 | return err; |
| 304 | } | |
| 305 | ||
| 306 | static void ncp_add_handle_path(struct ncp_server *server, __u8 vol_num, | |
| 307 | __le32 dir_base, int have_dir_base, | |
| 308 | const char *path) | |
| 309 | { | |
| 310 | ncp_add_byte(server, vol_num); | |
| 311 | ncp_add_dword(server, dir_base); | |
| 312 | if (have_dir_base != 0) { | |
| 313 | ncp_add_byte(server, 1); /* dir_base */ | |
| 314 | } else { | |
| 315 | ncp_add_byte(server, 0xff); /* no handle */ | |
| 316 | } | |
| 317 | if (path != NULL) { | |
| 318 | ncp_add_byte(server, 1); /* 1 component */ | |
| 319 | ncp_add_pstring(server, path); | |
| 320 | } else { | |
| 321 | ncp_add_byte(server, 0); | |
| 322 | } | |
| 323 | } | |
| 324 | ||
| 325 | int ncp_dirhandle_alloc(struct ncp_server* server, __u8 volnum, __le32 dirent, | |
| 326 | __u8* dirhandle) { | |
| 327 | int result; | |
| 328 | ||
| 329 | ncp_init_request(server); | |
| 330 | ncp_add_byte(server, 12); /* subfunction */ | |
| 331 | ncp_add_byte(server, NW_NS_DOS); | |
| 332 | ncp_add_byte(server, 0); | |
| 333 | ncp_add_word(server, 0); | |
| 334 | ncp_add_handle_path(server, volnum, dirent, 1, NULL); | |
| 335 | if ((result = ncp_request(server, 87)) == 0) { | |
| 336 | *dirhandle = ncp_reply_byte(server, 0); | |
| 337 | } | |
| 338 | ncp_unlock_server(server); | |
| 339 | return result; | |
| 340 | } | |
| 341 | ||
| 342 | int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) { | |
| 343 | int result; | |
| 344 | ||
| 345 | ncp_init_request_s(server, 20); | |
| 346 | ncp_add_byte(server, dirhandle); | |
| 347 | result = ncp_request(server, 22); | |
| 348 | ncp_unlock_server(server); | |
| 349 | return result; | |
| 350 | } | |
| 351 | ||
| 2e54eb96 | 352 | void ncp_extract_file_info(const void *structure, struct nw_info_struct *target) |
| 1da177e4 | 353 | { |
| 2e54eb96 | 354 | const __u8 *name_len; |
| 1da177e4 LT |
355 | const int info_struct_size = offsetof(struct nw_info_struct, nameLen); |
| 356 | ||
| 357 | memcpy(target, structure, info_struct_size); | |
| 358 | name_len = structure + info_struct_size; | |
| 359 | target->nameLen = *name_len; | |
| 360 | memcpy(target->entryName, name_len + 1, *name_len); | |
| 361 | target->entryName[*name_len] = '\0'; | |
| 362 | target->volNumber = le32_to_cpu(target->volNumber); | |
| 363 | return; | |
| 364 | } | |
| 365 | ||
| 366 | #ifdef CONFIG_NCPFS_NFS_NS | |
| 2e54eb96 | 367 | static inline void ncp_extract_nfs_info(const unsigned char *structure, |
| 1da177e4 LT |
368 | struct nw_nfs_info *target) |
| 369 | { | |
| 370 | target->mode = DVAL_LH(structure); | |
| 371 | target->rdev = DVAL_LH(structure + 8); | |
| 372 | } | |
| 373 | #endif | |
| 374 | ||
| 375 | int ncp_obtain_nfs_info(struct ncp_server *server, | |
| 376 | struct nw_info_struct *target) | |
| 377 | ||
| 378 | { | |
| 379 | int result = 0; | |
| 380 | #ifdef CONFIG_NCPFS_NFS_NS | |
| 381 | __u32 volnum = target->volNumber; | |
| 382 | ||
| 383 | if (ncp_is_nfs_extras(server, volnum)) { | |
| 384 | ncp_init_request(server); | |
| 385 | ncp_add_byte(server, 19); /* subfunction */ | |
| 386 | ncp_add_byte(server, server->name_space[volnum]); | |
| 387 | ncp_add_byte(server, NW_NS_NFS); | |
| 388 | ncp_add_byte(server, 0); | |
| 389 | ncp_add_byte(server, volnum); | |
| 390 | ncp_add_dword(server, target->dirEntNum); | |
| 391 | /* We must retrieve both nlinks and rdev, otherwise some server versions | |
| 392 | report zeroes instead of valid data */ | |
| 393 | ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); | |
| 394 | ||
| 395 | if ((result = ncp_request(server, 87)) == 0) { | |
| 396 | ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs); | |
| 397 | DPRINTK(KERN_DEBUG | |
| 398 | "ncp_obtain_nfs_info: (%s) mode=0%o, rdev=0x%x\n", | |
| 399 | target->entryName, target->nfs.mode, | |
| 400 | target->nfs.rdev); | |
| 401 | } else { | |
| 402 | target->nfs.mode = 0; | |
| 403 | target->nfs.rdev = 0; | |
| 404 | } | |
| 405 | ncp_unlock_server(server); | |
| 406 | ||
| 407 | } else | |
| 408 | #endif | |
| 409 | { | |
| 410 | target->nfs.mode = 0; | |
| 411 | target->nfs.rdev = 0; | |
| 412 | } | |
| 413 | return result; | |
| 414 | } | |
| 415 | ||
| 416 | /* | |
| 417 | * Returns information for a (one-component) name relative to | |
| 418 | * the specified directory. | |
| 419 | */ | |
| 2e54eb96 | 420 | int ncp_obtain_info(struct ncp_server *server, struct inode *dir, const char *path, |
| 1da177e4 LT |
421 | struct nw_info_struct *target) |
| 422 | { | |
| 423 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
| 424 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
| 425 | int result; | |
| 426 | ||
| 427 | if (target == NULL) { | |
| 428 | printk(KERN_ERR "ncp_obtain_info: invalid call\n"); | |
| 429 | return -EINVAL; | |
| 430 | } | |
| 431 | ncp_init_request(server); | |
| 432 | ncp_add_byte(server, 6); /* subfunction */ | |
| 433 | ncp_add_byte(server, server->name_space[volnum]); | |
| 434 | ncp_add_byte(server, server->name_space[volnum]); /* N.B. twice ?? */ | |
| 435 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ | |
| 436 | ncp_add_dword(server, RIM_ALL); | |
| 437 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
| 438 | ||
| 439 | if ((result = ncp_request(server, 87)) != 0) | |
| 440 | goto out; | |
| 441 | ncp_extract_file_info(ncp_reply_data(server, 0), target); | |
| 442 | ncp_unlock_server(server); | |
| 443 | ||
| 444 | result = ncp_obtain_nfs_info(server, target); | |
| 445 | return result; | |
| 446 | ||
| 447 | out: | |
| 448 | ncp_unlock_server(server); | |
| 449 | return result; | |
| 450 | } | |
| 451 | ||
| 452 | #ifdef CONFIG_NCPFS_NFS_NS | |
| 453 | static int | |
| 454 | ncp_obtain_DOS_dir_base(struct ncp_server *server, | |
| 2e54eb96 PV |
455 | __u8 ns, __u8 volnum, __le32 dirent, |
| 456 | const char *path, /* At most 1 component */ | |
| 1da177e4 LT |
457 | __le32 *DOS_dir_base) |
| 458 | { | |
| 459 | int result; | |
| 460 | ||
| 461 | ncp_init_request(server); | |
| 462 | ncp_add_byte(server, 6); /* subfunction */ | |
| 2e54eb96 PV |
463 | ncp_add_byte(server, ns); |
| 464 | ncp_add_byte(server, ns); | |
| 1da177e4 LT |
465 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ |
| 466 | ncp_add_dword(server, RIM_DIRECTORY); | |
| 467 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
| 468 | ||
| 469 | if ((result = ncp_request(server, 87)) == 0) | |
| 470 | { | |
| 471 | if (DOS_dir_base) *DOS_dir_base=ncp_reply_dword(server, 0x34); | |
| 472 | } | |
| 473 | ncp_unlock_server(server); | |
| 474 | return result; | |
| 475 | } | |
| 476 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
| 477 | ||
| 478 | static inline int | |
| 479 | ncp_get_known_namespace(struct ncp_server *server, __u8 volume) | |
| 480 | { | |
| 481 | #if defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) | |
| 482 | int result; | |
| 483 | __u8 *namespace; | |
| 484 | __u16 no_namespaces; | |
| 485 | ||
| 486 | ncp_init_request(server); | |
| 487 | ncp_add_byte(server, 24); /* Subfunction: Get Name Spaces Loaded */ | |
| 488 | ncp_add_word(server, 0); | |
| 489 | ncp_add_byte(server, volume); | |
| 490 | ||
| 491 | if ((result = ncp_request(server, 87)) != 0) { | |
| 492 | ncp_unlock_server(server); | |
| 493 | return NW_NS_DOS; /* not result ?? */ | |
| 494 | } | |
| 495 | ||
| 496 | result = NW_NS_DOS; | |
| 497 | no_namespaces = ncp_reply_le16(server, 0); | |
| 498 | namespace = ncp_reply_data(server, 2); | |
| 499 | ||
| 500 | while (no_namespaces > 0) { | |
| 501 | DPRINTK("get_namespaces: found %d on %d\n", *namespace, volume); | |
| 502 | ||
| 503 | #ifdef CONFIG_NCPFS_NFS_NS | |
| 504 | if ((*namespace == NW_NS_NFS) && !(server->m.flags&NCP_MOUNT_NO_NFS)) | |
| 505 | { | |
| 506 | result = NW_NS_NFS; | |
| 507 | break; | |
| 508 | } | |
| 509 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
| 510 | #ifdef CONFIG_NCPFS_OS2_NS | |
| 511 | if ((*namespace == NW_NS_OS2) && !(server->m.flags&NCP_MOUNT_NO_OS2)) | |
| 512 | { | |
| 513 | result = NW_NS_OS2; | |
| 514 | } | |
| 515 | #endif /* CONFIG_NCPFS_OS2_NS */ | |
| 516 | namespace += 1; | |
| 517 | no_namespaces -= 1; | |
| 518 | } | |
| 519 | ncp_unlock_server(server); | |
| 520 | return result; | |
| 521 | #else /* neither OS2 nor NFS - only DOS */ | |
| 522 | return NW_NS_DOS; | |
| 523 | #endif /* defined(CONFIG_NCPFS_OS2_NS) || defined(CONFIG_NCPFS_NFS_NS) */ | |
| 524 | } | |
| 525 | ||
| 2e54eb96 PV |
526 | int |
| 527 | ncp_update_known_namespace(struct ncp_server *server, __u8 volume, int *ret_ns) | |
| 528 | { | |
| 529 | int ns = ncp_get_known_namespace(server, volume); | |
| 530 | ||
| 531 | if (ret_ns) | |
| 532 | *ret_ns = ns; | |
| 533 | ||
| 534 | DPRINTK("lookup_vol: namespace[%d] = %d\n", | |
| 535 | volume, server->name_space[volume]); | |
| 536 | ||
| 537 | if (server->name_space[volume] == ns) | |
| 538 | return 0; | |
| 539 | server->name_space[volume] = ns; | |
| 540 | return 1; | |
| 541 | } | |
| 542 | ||
| 1da177e4 LT |
543 | static int |
| 544 | ncp_ObtainSpecificDirBase(struct ncp_server *server, | |
| 545 | __u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base, | |
| 2e54eb96 | 546 | const char *path, /* At most 1 component */ |
| 1da177e4 LT |
547 | __le32 *dirEntNum, __le32 *DosDirNum) |
| 548 | { | |
| 549 | int result; | |
| 550 | ||
| 551 | ncp_init_request(server); | |
| 552 | ncp_add_byte(server, 6); /* subfunction */ | |
| 553 | ncp_add_byte(server, nsSrc); | |
| 554 | ncp_add_byte(server, nsDst); | |
| 555 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ | |
| 556 | ncp_add_dword(server, RIM_ALL); | |
| 557 | ncp_add_handle_path(server, vol_num, dir_base, 1, path); | |
| 558 | ||
| 559 | if ((result = ncp_request(server, 87)) != 0) | |
| 560 | { | |
| 561 | ncp_unlock_server(server); | |
| 562 | return result; | |
| 563 | } | |
| 564 | ||
| 565 | if (dirEntNum) | |
| 566 | *dirEntNum = ncp_reply_dword(server, 0x30); | |
| 567 | if (DosDirNum) | |
| 568 | *DosDirNum = ncp_reply_dword(server, 0x34); | |
| 569 | ncp_unlock_server(server); | |
| 570 | return 0; | |
| 571 | } | |
| 572 | ||
| 573 | int | |
| 574 | ncp_mount_subdir(struct ncp_server *server, | |
| 575 | __u8 volNumber, __u8 srcNS, __le32 dirEntNum, | |
| 576 | __u32* volume, __le32* newDirEnt, __le32* newDosEnt) | |
| 577 | { | |
| 578 | int dstNS; | |
| 579 | int result; | |
| 2e54eb96 PV |
580 | |
| 581 | ncp_update_known_namespace(server, volNumber, &dstNS); | |
| 1da177e4 LT |
582 | if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber, |
| 583 | dirEntNum, NULL, newDirEnt, newDosEnt)) != 0) | |
| 584 | { | |
| 585 | return result; | |
| 586 | } | |
| 1da177e4 LT |
587 | *volume = volNumber; |
| 588 | server->m.mounted_vol[1] = 0; | |
| 589 | server->m.mounted_vol[0] = 'X'; | |
| 590 | return 0; | |
| 591 | } | |
| 592 | ||
| 593 | int | |
| 2e54eb96 PV |
594 | ncp_get_volume_root(struct ncp_server *server, |
| 595 | const char *volname, __u32* volume, __le32* dirent, __le32* dosdirent) | |
| 1da177e4 LT |
596 | { |
| 597 | int result; | |
| 1da177e4 LT |
598 | |
| 599 | DPRINTK("ncp_get_volume_root: looking up vol %s\n", volname); | |
| 600 | ||
| 601 | ncp_init_request(server); | |
| 602 | ncp_add_byte(server, 22); /* Subfunction: Generate dir handle */ | |
| 603 | ncp_add_byte(server, 0); /* DOS namespace */ | |
| 604 | ncp_add_byte(server, 0); /* reserved */ | |
| 605 | ncp_add_byte(server, 0); /* reserved */ | |
| 606 | ncp_add_byte(server, 0); /* reserved */ | |
| 607 | ||
| 608 | ncp_add_byte(server, 0); /* faked volume number */ | |
| 609 | ncp_add_dword(server, 0); /* faked dir_base */ | |
| 610 | ncp_add_byte(server, 0xff); /* Don't have a dir_base */ | |
| 611 | ncp_add_byte(server, 1); /* 1 path component */ | |
| 612 | ncp_add_pstring(server, volname); | |
| 613 | ||
| 614 | if ((result = ncp_request(server, 87)) != 0) { | |
| 615 | ncp_unlock_server(server); | |
| 616 | return result; | |
| 617 | } | |
| 618 | *dirent = *dosdirent = ncp_reply_dword(server, 4); | |
| 2e54eb96 | 619 | *volume = ncp_reply_byte(server, 8); |
| 1da177e4 | 620 | ncp_unlock_server(server); |
| 1da177e4 LT |
621 | return 0; |
| 622 | } | |
| 623 | ||
| 624 | int | |
| 2e54eb96 PV |
625 | ncp_lookup_volume(struct ncp_server *server, |
| 626 | const char *volname, struct nw_info_struct *target) | |
| 1da177e4 LT |
627 | { |
| 628 | int result; | |
| 629 | ||
| 630 | memset(target, 0, sizeof(*target)); | |
| 631 | result = ncp_get_volume_root(server, volname, | |
| 632 | &target->volNumber, &target->dirEntNum, &target->DosDirNum); | |
| 633 | if (result) { | |
| 634 | return result; | |
| 635 | } | |
| 2e54eb96 | 636 | ncp_update_known_namespace(server, target->volNumber, NULL); |
| 1da177e4 LT |
637 | target->nameLen = strlen(volname); |
| 638 | memcpy(target->entryName, volname, target->nameLen+1); | |
| 639 | target->attributes = aDIR; | |
| 640 | /* set dates to Jan 1, 1986 00:00 */ | |
| 641 | target->creationTime = target->modifyTime = cpu_to_le16(0x0000); | |
| 642 | target->creationDate = target->modifyDate = target->lastAccessDate = cpu_to_le16(0x0C21); | |
| 643 | target->nfs.mode = 0; | |
| 644 | return 0; | |
| 645 | } | |
| 646 | ||
| 647 | int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *server, | |
| 648 | struct inode *dir, | |
| 649 | const char *path, | |
| 650 | __le32 info_mask, | |
| 651 | const struct nw_modify_dos_info *info) | |
| 652 | { | |
| 653 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
| 654 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
| 655 | int result; | |
| 656 | ||
| 657 | ncp_init_request(server); | |
| 658 | ncp_add_byte(server, 7); /* subfunction */ | |
| 659 | ncp_add_byte(server, server->name_space[volnum]); | |
| 660 | ncp_add_byte(server, 0); /* reserved */ | |
| 661 | ncp_add_word(server, cpu_to_le16(0x8006)); /* search attribs: all */ | |
| 662 | ||
| 663 | ncp_add_dword(server, info_mask); | |
| 664 | ncp_add_mem(server, info, sizeof(*info)); | |
| 665 | ncp_add_handle_path(server, volnum, dirent, 1, path); | |
| 666 | ||
| 667 | result = ncp_request(server, 87); | |
| 668 | ncp_unlock_server(server); | |
| 669 | return result; | |
| 670 | } | |
| 671 | ||
| 672 | int ncp_modify_file_or_subdir_dos_info(struct ncp_server *server, | |
| 673 | struct inode *dir, | |
| 674 | __le32 info_mask, | |
| 675 | const struct nw_modify_dos_info *info) | |
| 676 | { | |
| 677 | return ncp_modify_file_or_subdir_dos_info_path(server, dir, NULL, | |
| 678 | info_mask, info); | |
| 679 | } | |
| 680 | ||
| 681 | #ifdef CONFIG_NCPFS_NFS_NS | |
| 682 | int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, | |
| 683 | __u32 mode, __u32 rdev) | |
| 684 | ||
| 685 | { | |
| 686 | int result = 0; | |
| 687 | ||
| 2e54eb96 | 688 | ncp_init_request(server); |
| 1da177e4 | 689 | if (server->name_space[volnum] == NW_NS_NFS) { |
| 1da177e4 LT |
690 | ncp_add_byte(server, 25); /* subfunction */ |
| 691 | ncp_add_byte(server, server->name_space[volnum]); | |
| 692 | ncp_add_byte(server, NW_NS_NFS); | |
| 693 | ncp_add_byte(server, volnum); | |
| 694 | ncp_add_dword(server, dirent); | |
| 695 | /* we must always operate on both nlinks and rdev, otherwise | |
| 696 | rdev is not set */ | |
| 697 | ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); | |
| 698 | ncp_add_dword_lh(server, mode); | |
| 699 | ncp_add_dword_lh(server, 1); /* nlinks */ | |
| 700 | ncp_add_dword_lh(server, rdev); | |
| 701 | result = ncp_request(server, 87); | |
| 1da177e4 | 702 | } |
| 2e54eb96 | 703 | ncp_unlock_server(server); |
| 1da177e4 LT |
704 | return result; |
| 705 | } | |
| 706 | #endif | |
| 707 | ||
| 708 | ||
| 709 | static int | |
| 710 | ncp_DeleteNSEntry(struct ncp_server *server, | |
| 711 | __u8 have_dir_base, __u8 volnum, __le32 dirent, | |
| 2e54eb96 | 712 | const char* name, __u8 ns, __le16 attr) |
| 1da177e4 LT |
713 | { |
| 714 | int result; | |
| 715 | ||
| 716 | ncp_init_request(server); | |
| 717 | ncp_add_byte(server, 8); /* subfunction */ | |
| 718 | ncp_add_byte(server, ns); | |
| 719 | ncp_add_byte(server, 0); /* reserved */ | |
| 720 | ncp_add_word(server, attr); /* search attribs: all */ | |
| 721 | ncp_add_handle_path(server, volnum, dirent, have_dir_base, name); | |
| 722 | ||
| 723 | result = ncp_request(server, 87); | |
| 724 | ncp_unlock_server(server); | |
| 725 | return result; | |
| 726 | } | |
| 727 | ||
| 728 | int | |
| 729 | ncp_del_file_or_subdir2(struct ncp_server *server, | |
| 730 | struct dentry *dentry) | |
| 731 | { | |
| 732 | struct inode *inode = dentry->d_inode; | |
| 733 | __u8 volnum; | |
| 734 | __le32 dirent; | |
| 735 | ||
| 736 | if (!inode) { | |
| 1da177e4 LT |
737 | return 0xFF; /* Any error */ |
| 738 | } | |
| 739 | volnum = NCP_FINFO(inode)->volNumber; | |
| 740 | dirent = NCP_FINFO(inode)->DosDirNum; | |
| 741 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); | |
| 742 | } | |
| 743 | ||
| 744 | int | |
| 745 | ncp_del_file_or_subdir(struct ncp_server *server, | |
| 2e54eb96 | 746 | struct inode *dir, const char *name) |
| 1da177e4 LT |
747 | { |
| 748 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
| 749 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
| 2e54eb96 | 750 | int name_space; |
| 1da177e4 | 751 | |
| 2e54eb96 | 752 | name_space = server->name_space[volnum]; |
| 1da177e4 | 753 | #ifdef CONFIG_NCPFS_NFS_NS |
| 2e54eb96 | 754 | if (name_space == NW_NS_NFS) |
| 1da177e4 LT |
755 | { |
| 756 | int result; | |
| 757 | ||
| 2e54eb96 | 758 | result=ncp_obtain_DOS_dir_base(server, name_space, volnum, dirent, name, &dirent); |
| 1da177e4 | 759 | if (result) return result; |
| 2e54eb96 PV |
760 | name = NULL; |
| 761 | name_space = NW_NS_DOS; | |
| 1da177e4 | 762 | } |
| 1da177e4 | 763 | #endif /* CONFIG_NCPFS_NFS_NS */ |
| 2e54eb96 | 764 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, name_space, cpu_to_le16(0x8006)); |
| 1da177e4 LT |
765 | } |
| 766 | ||
| 767 | static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6]) | |
| 768 | { | |
| 769 | __le16 *dest = (__le16 *) ret; | |
| 770 | dest[1] = cpu_to_le16(v0); | |
| 771 | dest[2] = cpu_to_le16(v1); | |
| 772 | dest[0] = cpu_to_le16(v0 + 1); | |
| 773 | return; | |
| 774 | } | |
| 775 | ||
| 776 | /* If both dir and name are NULL, then in target there's already a | |
| 777 | looked-up entry that wants to be opened. */ | |
| 778 | int ncp_open_create_file_or_subdir(struct ncp_server *server, | |
| 2e54eb96 | 779 | struct inode *dir, const char *name, |
| 1da177e4 LT |
780 | int open_create_mode, |
| 781 | __le32 create_attributes, | |
| 782 | __le16 desired_acc_rights, | |
| 783 | struct ncp_entry_info *target) | |
| 784 | { | |
| 785 | __le16 search_attribs = cpu_to_le16(0x0006); | |
| 786 | __u8 volnum; | |
| 787 | __le32 dirent; | |
| 788 | int result; | |
| 789 | ||
| 790 | volnum = NCP_FINFO(dir)->volNumber; | |
| 791 | dirent = NCP_FINFO(dir)->dirEntNum; | |
| 792 | ||
| 793 | if ((create_attributes & aDIR) != 0) { | |
| 794 | search_attribs |= cpu_to_le16(0x8000); | |
| 795 | } | |
| 796 | ncp_init_request(server); | |
| 797 | ncp_add_byte(server, 1); /* subfunction */ | |
| 798 | ncp_add_byte(server, server->name_space[volnum]); | |
| 799 | ncp_add_byte(server, open_create_mode); | |
| 800 | ncp_add_word(server, search_attribs); | |
| 801 | ncp_add_dword(server, RIM_ALL); | |
| 802 | ncp_add_dword(server, create_attributes); | |
| 803 | /* The desired acc rights seem to be the inherited rights mask | |
| 804 | for directories */ | |
| 805 | ncp_add_word(server, desired_acc_rights); | |
| 806 | ncp_add_handle_path(server, volnum, dirent, 1, name); | |
| 807 | ||
| 808 | if ((result = ncp_request(server, 87)) != 0) | |
| 809 | goto out; | |
| 810 | if (!(create_attributes & aDIR)) | |
| 811 | target->opened = 1; | |
| 812 | ||
| 813 | /* in target there's a new finfo to fill */ | |
| 814 | ncp_extract_file_info(ncp_reply_data(server, 6), &(target->i)); | |
| 815 | target->volume = target->i.volNumber; | |
| 816 | ConvertToNWfromDWORD(ncp_reply_le16(server, 0), | |
| 817 | ncp_reply_le16(server, 2), | |
| 818 | target->file_handle); | |
| 819 | ||
| 820 | ncp_unlock_server(server); | |
| 821 | ||
| 822 | (void)ncp_obtain_nfs_info(server, &(target->i)); | |
| 823 | return 0; | |
| 824 | ||
| 825 | out: | |
| 826 | ncp_unlock_server(server); | |
| 827 | return result; | |
| 828 | } | |
| 829 | ||
| 830 | int | |
| 831 | ncp_initialize_search(struct ncp_server *server, struct inode *dir, | |
| 832 | struct nw_search_sequence *target) | |
| 833 | { | |
| 834 | __u8 volnum = NCP_FINFO(dir)->volNumber; | |
| 835 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; | |
| 836 | int result; | |
| 837 | ||
| 838 | ncp_init_request(server); | |
| 839 | ncp_add_byte(server, 2); /* subfunction */ | |
| 840 | ncp_add_byte(server, server->name_space[volnum]); | |
| 841 | ncp_add_byte(server, 0); /* reserved */ | |
| 842 | ncp_add_handle_path(server, volnum, dirent, 1, NULL); | |
| 843 | ||
| 844 | result = ncp_request(server, 87); | |
| 845 | if (result) | |
| 846 | goto out; | |
| 847 | memcpy(target, ncp_reply_data(server, 0), sizeof(*target)); | |
| 848 | ||
| 849 | out: | |
| 850 | ncp_unlock_server(server); | |
| 851 | return result; | |
| 852 | } | |
| 853 | ||
| 1da177e4 LT |
854 | int ncp_search_for_fileset(struct ncp_server *server, |
| 855 | struct nw_search_sequence *seq, | |
| 856 | int* more, | |
| 857 | int* cnt, | |
| 858 | char* buffer, | |
| 859 | size_t bufsize, | |
| 860 | char** rbuf, | |
| 861 | size_t* rsize) | |
| 862 | { | |
| 863 | int result; | |
| 864 | ||
| 865 | ncp_init_request(server); | |
| 866 | ncp_add_byte(server, 20); | |
| 867 | ncp_add_byte(server, server->name_space[seq->volNumber]); | |
| 868 | ncp_add_byte(server, 0); /* datastream */ | |
| 869 | ncp_add_word(server, cpu_to_le16(0x8006)); | |
| 870 | ncp_add_dword(server, RIM_ALL); | |
| 871 | ncp_add_word(server, cpu_to_le16(32767)); /* max returned items */ | |
| 872 | ncp_add_mem(server, seq, 9); | |
| 873 | #ifdef CONFIG_NCPFS_NFS_NS | |
| 874 | if (server->name_space[seq->volNumber] == NW_NS_NFS) { | |
| 875 | ncp_add_byte(server, 0); /* 0 byte pattern */ | |
| 876 | } else | |
| 877 | #endif | |
| 878 | { | |
| 879 | ncp_add_byte(server, 2); /* 2 byte pattern */ | |
| 880 | ncp_add_byte(server, 0xff); /* following is a wildcard */ | |
| 881 | ncp_add_byte(server, '*'); | |
| 882 | } | |
| 883 | result = ncp_request2(server, 87, buffer, bufsize); | |
| 884 | if (result) { | |
| 885 | ncp_unlock_server(server); | |
| 886 | return result; | |
| 887 | } | |
| 888 | if (server->ncp_reply_size < 12) { | |
| 889 | ncp_unlock_server(server); | |
| 890 | return 0xFF; | |
| 891 | } | |
| 892 | *rsize = server->ncp_reply_size - 12; | |
| 893 | ncp_unlock_server(server); | |
| 894 | buffer = buffer + sizeof(struct ncp_reply_header); | |
| 895 | *rbuf = buffer + 12; | |
| 896 | *cnt = WVAL_LH(buffer + 10); | |
| 897 | *more = BVAL(buffer + 9); | |
| 898 | memcpy(seq, buffer, 9); | |
| 899 | return 0; | |
| 900 | } | |
| 901 | ||
| 902 | static int | |
| 903 | ncp_RenameNSEntry(struct ncp_server *server, | |
| 2e54eb96 PV |
904 | struct inode *old_dir, const char *old_name, __le16 old_type, |
| 905 | struct inode *new_dir, const char *new_name) | |
| 1da177e4 LT |
906 | { |
| 907 | int result = -EINVAL; | |
| 908 | ||
| 909 | if ((old_dir == NULL) || (old_name == NULL) || | |
| 910 | (new_dir == NULL) || (new_name == NULL)) | |
| 911 | goto out; | |
| 912 | ||
| 913 | ncp_init_request(server); | |
| 914 | ncp_add_byte(server, 4); /* subfunction */ | |
| 915 | ncp_add_byte(server, server->name_space[NCP_FINFO(old_dir)->volNumber]); | |
| 916 | ncp_add_byte(server, 1); /* rename flag */ | |
| 917 | ncp_add_word(server, old_type); /* search attributes */ | |
| 918 | ||
| 919 | /* source Handle Path */ | |
| 920 | ncp_add_byte(server, NCP_FINFO(old_dir)->volNumber); | |
| 921 | ncp_add_dword(server, NCP_FINFO(old_dir)->dirEntNum); | |
| 922 | ncp_add_byte(server, 1); | |
| 923 | ncp_add_byte(server, 1); /* 1 source component */ | |
| 924 | ||
| 925 | /* dest Handle Path */ | |
| 926 | ncp_add_byte(server, NCP_FINFO(new_dir)->volNumber); | |
| 927 | ncp_add_dword(server, NCP_FINFO(new_dir)->dirEntNum); | |
| 928 | ncp_add_byte(server, 1); | |
| 929 | ncp_add_byte(server, 1); /* 1 destination component */ | |
| 930 | ||
| 931 | /* source path string */ | |
| 932 | ncp_add_pstring(server, old_name); | |
| 933 | /* dest path string */ | |
| 934 | ncp_add_pstring(server, new_name); | |
| 935 | ||
| 936 | result = ncp_request(server, 87); | |
| 937 | ncp_unlock_server(server); | |
| 938 | out: | |
| 939 | return result; | |
| 940 | } | |
| 941 | ||
| 942 | int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, | |
| 2e54eb96 PV |
943 | struct inode *old_dir, const char *old_name, |
| 944 | struct inode *new_dir, const char *new_name) | |
| 1da177e4 LT |
945 | { |
| 946 | int result; | |
| 947 | __le16 old_type = cpu_to_le16(0x06); | |
| 948 | ||
| 949 | /* If somebody can do it atomic, call me... vandrove@vc.cvut.cz */ | |
| 950 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
| 951 | new_dir, new_name); | |
| 952 | if (result == 0xFF) /* File Not Found, try directory */ | |
| 953 | { | |
| 954 | old_type = cpu_to_le16(0x16); | |
| 955 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
| 956 | new_dir, new_name); | |
| 957 | } | |
| 958 | if (result != 0x92) return result; /* All except NO_FILES_RENAMED */ | |
| 959 | result = ncp_del_file_or_subdir(server, new_dir, new_name); | |
| 960 | if (result != 0) return -EACCES; | |
| 961 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, | |
| 962 | new_dir, new_name); | |
| 963 | return result; | |
| 964 | } | |
| 965 | ||
| 966 | ||
| 967 | /* We have to transfer to/from user space */ | |
| 968 | int | |
| 969 | ncp_read_kernel(struct ncp_server *server, const char *file_id, | |
| 970 | __u32 offset, __u16 to_read, char *target, int *bytes_read) | |
| 971 | { | |
| 2e54eb96 | 972 | const char *source; |
| 1da177e4 LT |
973 | int result; |
| 974 | ||
| 975 | ncp_init_request(server); | |
| 976 | ncp_add_byte(server, 0); | |
| 977 | ncp_add_mem(server, file_id, 6); | |
| 978 | ncp_add_be32(server, offset); | |
| 979 | ncp_add_be16(server, to_read); | |
| 980 | ||
| 981 | if ((result = ncp_request(server, 72)) != 0) { | |
| 982 | goto out; | |
| 983 | } | |
| 984 | *bytes_read = ncp_reply_be16(server, 0); | |
| 985 | source = ncp_reply_data(server, 2 + (offset & 1)); | |
| 986 | ||
| 987 | memcpy(target, source, *bytes_read); | |
| 988 | out: | |
| 989 | ncp_unlock_server(server); | |
| 990 | return result; | |
| 991 | } | |
| 992 | ||
| 993 | /* There is a problem... egrep and some other silly tools do: | |
| 994 | x = mmap(NULL, MAP_PRIVATE, PROT_READ|PROT_WRITE, <ncpfs fd>, 32768); | |
| 995 | read(<ncpfs fd>, x, 32768); | |
| 996 | Now copying read result by copy_to_user causes pagefault. This pagefault | |
| 997 | could not be handled because of server was locked due to read. So we have | |
| 998 | to use temporary buffer. So ncp_unlock_server must be done before | |
| 999 | copy_to_user (and for write, copy_from_user must be done before | |
| 1000 | ncp_init_request... same applies for send raw packet ioctl). Because of | |
| 1001 | file is normally read in bigger chunks, caller provides kmalloced | |
| 1002 | (vmalloced) chunk of memory with size >= to_read... | |
| 1003 | */ | |
| 1004 | int | |
| 1005 | ncp_read_bounce(struct ncp_server *server, const char *file_id, | |
| 1006 | __u32 offset, __u16 to_read, char __user *target, int *bytes_read, | |
| 1007 | void* bounce, __u32 bufsize) | |
| 1008 | { | |
| 1009 | int result; | |
| 1010 | ||
| 1011 | ncp_init_request(server); | |
| 1012 | ncp_add_byte(server, 0); | |
| 1013 | ncp_add_mem(server, file_id, 6); | |
| 1014 | ncp_add_be32(server, offset); | |
| 1015 | ncp_add_be16(server, to_read); | |
| 1016 | result = ncp_request2(server, 72, bounce, bufsize); | |
| 1017 | ncp_unlock_server(server); | |
| 1018 | if (!result) { | |
| 97a4feb4 HH |
1019 | int len = get_unaligned_be16((char *)bounce + |
| 1020 | sizeof(struct ncp_reply_header)); | |
| 1da177e4 LT |
1021 | result = -EIO; |
| 1022 | if (len <= to_read) { | |
| 1023 | char* source; | |
| 1024 | ||
| 1025 | source = (char*)bounce + | |
| 1026 | sizeof(struct ncp_reply_header) + 2 + | |
| 1027 | (offset & 1); | |
| 1028 | *bytes_read = len; | |
| 1029 | result = 0; | |
| 1030 | if (copy_to_user(target, source, len)) | |
| 1031 | result = -EFAULT; | |
| 1032 | } | |
| 1033 | } | |
| 1034 | return result; | |
| 1035 | } | |
| 1036 | ||
| 1037 | int | |
| 1038 | ncp_write_kernel(struct ncp_server *server, const char *file_id, | |
| 1039 | __u32 offset, __u16 to_write, | |
| 1040 | const char *source, int *bytes_written) | |
| 1041 | { | |
| 1042 | int result; | |
| 1043 | ||
| 1044 | ncp_init_request(server); | |
| 1045 | ncp_add_byte(server, 0); | |
| 1046 | ncp_add_mem(server, file_id, 6); | |
| 1047 | ncp_add_be32(server, offset); | |
| 1048 | ncp_add_be16(server, to_write); | |
| 1049 | ncp_add_mem(server, source, to_write); | |
| 1050 | ||
| 1051 | if ((result = ncp_request(server, 73)) == 0) | |
| 1052 | *bytes_written = to_write; | |
| 1053 | ncp_unlock_server(server); | |
| 1054 | return result; | |
| 1055 | } | |
| 1056 | ||
| 1057 | #ifdef CONFIG_NCPFS_IOCTL_LOCKING | |
| 1058 | int | |
| 1059 | ncp_LogPhysicalRecord(struct ncp_server *server, const char *file_id, | |
| 1060 | __u8 locktype, __u32 offset, __u32 length, __u16 timeout) | |
| 1061 | { | |
| 1062 | int result; | |
| 1063 | ||
| 1064 | ncp_init_request(server); | |
| 1065 | ncp_add_byte(server, locktype); | |
| 1066 | ncp_add_mem(server, file_id, 6); | |
| 1067 | ncp_add_be32(server, offset); | |
| 1068 | ncp_add_be32(server, length); | |
| 1069 | ncp_add_be16(server, timeout); | |
| 1070 | ||
| 1071 | if ((result = ncp_request(server, 0x1A)) != 0) | |
| 1072 | { | |
| 1073 | ncp_unlock_server(server); | |
| 1074 | return result; | |
| 1075 | } | |
| 1076 | ncp_unlock_server(server); | |
| 1077 | return 0; | |
| 1078 | } | |
| 1079 | ||
| 1080 | int | |
| 1081 | ncp_ClearPhysicalRecord(struct ncp_server *server, const char *file_id, | |
| 1082 | __u32 offset, __u32 length) | |
| 1083 | { | |
| 1084 | int result; | |
| 1085 | ||
| 1086 | ncp_init_request(server); | |
| 1087 | ncp_add_byte(server, 0); /* who knows... lanalyzer says that */ | |
| 1088 | ncp_add_mem(server, file_id, 6); | |
| 1089 | ncp_add_be32(server, offset); | |
| 1090 | ncp_add_be32(server, length); | |
| 1091 | ||
| 1092 | if ((result = ncp_request(server, 0x1E)) != 0) | |
| 1093 | { | |
| 1094 | ncp_unlock_server(server); | |
| 1095 | return result; | |
| 1096 | } | |
| 1097 | ncp_unlock_server(server); | |
| 1098 | return 0; | |
| 1099 | } | |
| 1100 | #endif /* CONFIG_NCPFS_IOCTL_LOCKING */ | |
| 1101 | ||
| 1102 | #ifdef CONFIG_NCPFS_NLS | |
| 1103 | /* This are the NLS conversion routines with inspirations and code parts | |
| 1104 | * from the vfat file system and hints from Petr Vandrovec. | |
| 1105 | */ | |
| 1106 | ||
| 1107 | int | |
| 1108 | ncp__io2vol(struct ncp_server *server, unsigned char *vname, unsigned int *vlen, | |
| 1109 | const unsigned char *iname, unsigned int ilen, int cc) | |
| 1110 | { | |
| 1111 | struct nls_table *in = server->nls_io; | |
| 1112 | struct nls_table *out = server->nls_vol; | |
| 1113 | unsigned char *vname_start; | |
| 1114 | unsigned char *vname_end; | |
| 1115 | const unsigned char *iname_end; | |
| 1116 | ||
| 1117 | iname_end = iname + ilen; | |
| 1118 | vname_start = vname; | |
| 1119 | vname_end = vname + *vlen - 1; | |
| 1120 | ||
| 1121 | while (iname < iname_end) { | |
| 1122 | int chl; | |
| 1123 | wchar_t ec; | |
| 1124 | ||
| 1125 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { | |
| 1126 | int k; | |
| 74675a58 | 1127 | unicode_t u; |
| 1da177e4 | 1128 | |
| 74675a58 AS |
1129 | k = utf8_to_utf32(iname, iname_end - iname, &u); |
| 1130 | if (k < 0 || u > MAX_WCHAR_T) | |
| 1da177e4 LT |
1131 | return -EINVAL; |
| 1132 | iname += k; | |
| 74675a58 | 1133 | ec = u; |
| 1da177e4 LT |
1134 | } else { |
| 1135 | if (*iname == NCP_ESC) { | |
| 1136 | int k; | |
| 1137 | ||
| 1138 | if (iname_end - iname < 5) | |
| 1139 | goto nospec; | |
| 1140 | ||
| 1141 | ec = 0; | |
| 1142 | for (k = 1; k < 5; k++) { | |
| 1143 | unsigned char nc; | |
| 1144 | ||
| 1145 | nc = iname[k] - '0'; | |
| 1146 | if (nc >= 10) { | |
| 1147 | nc -= 'A' - '0' - 10; | |
| 1148 | if ((nc < 10) || (nc > 15)) { | |
| 1149 | goto nospec; | |
| 1150 | } | |
| 1151 | } | |
| 1152 | ec = (ec << 4) | nc; | |
| 1153 | } | |
| 1154 | iname += 5; | |
| 1155 | } else { | |
| 1156 | nospec:; | |
| 1157 | if ( (chl = in->char2uni(iname, iname_end - iname, &ec)) < 0) | |
| 1158 | return chl; | |
| 1159 | iname += chl; | |
| 1160 | } | |
| 1161 | } | |
| 1162 | ||
| 1163 | /* unitoupper should be here! */ | |
| 1164 | ||
| 1165 | chl = out->uni2char(ec, vname, vname_end - vname); | |
| 1166 | if (chl < 0) | |
| 1167 | return chl; | |
| 1168 | ||
| 1169 | /* this is wrong... */ | |
| 1170 | if (cc) { | |
| 1171 | int chi; | |
| 1172 | ||
| 1173 | for (chi = 0; chi < chl; chi++){ | |
| 1174 | vname[chi] = ncp_toupper(out, vname[chi]); | |
| 1175 | } | |
| 1176 | } | |
| 1177 | vname += chl; | |
| 1178 | } | |
| 1179 | ||
| 1180 | *vname = 0; | |
| 1181 | *vlen = vname - vname_start; | |
| 1182 | return 0; | |
| 1183 | } | |
| 1184 | ||
| 1185 | int | |
| 1186 | ncp__vol2io(struct ncp_server *server, unsigned char *iname, unsigned int *ilen, | |
| 1187 | const unsigned char *vname, unsigned int vlen, int cc) | |
| 1188 | { | |
| 1189 | struct nls_table *in = server->nls_vol; | |
| 1190 | struct nls_table *out = server->nls_io; | |
| 1191 | const unsigned char *vname_end; | |
| 1192 | unsigned char *iname_start; | |
| 1193 | unsigned char *iname_end; | |
| 1194 | unsigned char *vname_cc; | |
| 1195 | int err; | |
| 1196 | ||
| 1197 | vname_cc = NULL; | |
| 1198 | ||
| 1199 | if (cc) { | |
| 1200 | int i; | |
| 1201 | ||
| 1202 | /* this is wrong! */ | |
| 1203 | vname_cc = kmalloc(vlen, GFP_KERNEL); | |
| 1204 | if (!vname_cc) | |
| 1205 | return -ENOMEM; | |
| 1206 | for (i = 0; i < vlen; i++) | |
| 1207 | vname_cc[i] = ncp_tolower(in, vname[i]); | |
| 1208 | vname = vname_cc; | |
| 1209 | } | |
| 1210 | ||
| 1211 | iname_start = iname; | |
| 1212 | iname_end = iname + *ilen - 1; | |
| 1213 | vname_end = vname + vlen; | |
| 1214 | ||
| 1215 | while (vname < vname_end) { | |
| 1216 | wchar_t ec; | |
| 1217 | int chl; | |
| 1218 | ||
| 1219 | if ( (chl = in->char2uni(vname, vname_end - vname, &ec)) < 0) { | |
| 1220 | err = chl; | |
| 1221 | goto quit; | |
| 1222 | } | |
| 1223 | vname += chl; | |
| 1224 | ||
| 1225 | /* unitolower should be here! */ | |
| 1226 | ||
| 1227 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { | |
| 1228 | int k; | |
| 1229 | ||
| 74675a58 | 1230 | k = utf32_to_utf8(ec, iname, iname_end - iname); |
| 1da177e4 LT |
1231 | if (k < 0) { |
| 1232 | err = -ENAMETOOLONG; | |
| 1233 | goto quit; | |
| 1234 | } | |
| 1235 | iname += k; | |
| 1236 | } else { | |
| 1237 | if ( (chl = out->uni2char(ec, iname, iname_end - iname)) >= 0) { | |
| 1238 | iname += chl; | |
| 1239 | } else { | |
| 1240 | int k; | |
| 1241 | ||
| 1242 | if (iname_end - iname < 5) { | |
| 1243 | err = -ENAMETOOLONG; | |
| 1244 | goto quit; | |
| 1245 | } | |
| 1246 | *iname = NCP_ESC; | |
| 1247 | for (k = 4; k > 0; k--) { | |
| 1248 | unsigned char v; | |
| 1249 | ||
| 1250 | v = (ec & 0xF) + '0'; | |
| 1251 | if (v > '9') { | |
| 1252 | v += 'A' - '9' - 1; | |
| 1253 | } | |
| 1254 | iname[k] = v; | |
| 1255 | ec >>= 4; | |
| 1256 | } | |
| 1257 | iname += 5; | |
| 1258 | } | |
| 1259 | } | |
| 1260 | } | |
| 1261 | ||
| 1262 | *iname = 0; | |
| 1263 | *ilen = iname - iname_start; | |
| 1264 | err = 0; | |
| 1265 | quit:; | |
| 1266 | if (cc) | |
| 1267 | kfree(vname_cc); | |
| 1268 | return err; | |
| 1269 | } | |
| 1270 | ||
| 1271 | #else | |
| 1272 | ||
| 1273 | int | |
| 1274 | ncp__io2vol(unsigned char *vname, unsigned int *vlen, | |
| 1275 | const unsigned char *iname, unsigned int ilen, int cc) | |
| 1276 | { | |
| 1277 | int i; | |
| 1278 | ||
| 1279 | if (*vlen <= ilen) | |
| 1280 | return -ENAMETOOLONG; | |
| 1281 | ||
| 1282 | if (cc) | |
| 1283 | for (i = 0; i < ilen; i++) { | |
| 1284 | *vname = toupper(*iname); | |
| 1285 | vname++; | |
| 1286 | iname++; | |
| 1287 | } | |
| 1288 | else { | |
| 1289 | memmove(vname, iname, ilen); | |
| 1290 | vname += ilen; | |
| 1291 | } | |
| 1292 | ||
| 1293 | *vlen = ilen; | |
| 1294 | *vname = 0; | |
| 1295 | return 0; | |
| 1296 | } | |
| 1297 | ||
| 1298 | int | |
| 1299 | ncp__vol2io(unsigned char *iname, unsigned int *ilen, | |
| 1300 | const unsigned char *vname, unsigned int vlen, int cc) | |
| 1301 | { | |
| 1302 | int i; | |
| 1303 | ||
| 1304 | if (*ilen <= vlen) | |
| 1305 | return -ENAMETOOLONG; | |
| 1306 | ||
| 1307 | if (cc) | |
| 1308 | for (i = 0; i < vlen; i++) { | |
| 1309 | *iname = tolower(*vname); | |
| 1310 | iname++; | |
| 1311 | vname++; | |
| 1312 | } | |
| 1313 | else { | |
| 1314 | memmove(iname, vname, vlen); | |
| 1315 | iname += vlen; | |
| 1316 | } | |
| 1317 | ||
| 1318 | *ilen = vlen; | |
| 1319 | *iname = 0; | |
| 1320 | return 0; | |
| 1321 | } | |
| 1322 | ||
| 1323 | #endif |