| | 1 | // SPDX-License-Identifier: GPL-2.0 |
| | 2 | /* |
| | 3 | * ncplib_kernel.c |
| | 4 | * |
| | 5 | * Copyright (C) 1995, 1996 by Volker Lendecke |
| | 6 | * Modified for big endian by J.F. Chadima and David S. Miller |
| | 7 | * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache |
| | 8 | * Modified 1999 Wolfram Pienkoss for NLS |
| | 9 | * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info |
| | 10 | * |
| | 11 | */ |
| | 12 | |
| | 13 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| | 14 | |
| | 15 | #include "ncp_fs.h" |
| | 16 | |
| | 17 | static inline void assert_server_locked(struct ncp_server *server) |
| | 18 | { |
| | 19 | if (server->lock == 0) { |
| | 20 | ncp_dbg(1, "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 | ncp_dbg(1, "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(const void *data) |
| | 112 | { |
| | 113 | return *(const u8 *)data; |
| | 114 | } |
| | 115 | |
| | 116 | static u8 ncp_reply_byte(struct ncp_server *server, int offset) |
| | 117 | { |
| | 118 | return *(const u8 *)ncp_reply_data(server, offset); |
| | 119 | } |
| | 120 | |
| | 121 | static inline u16 WVAL_LH(const void *data) |
| | 122 | { |
| | 123 | return get_unaligned_le16(data); |
| | 124 | } |
| | 125 | |
| | 126 | static u16 |
| | 127 | ncp_reply_le16(struct ncp_server *server, int offset) |
| | 128 | { |
| | 129 | return get_unaligned_le16(ncp_reply_data(server, offset)); |
| | 130 | } |
| | 131 | |
| | 132 | static u16 |
| | 133 | ncp_reply_be16(struct ncp_server *server, int offset) |
| | 134 | { |
| | 135 | return get_unaligned_be16(ncp_reply_data(server, offset)); |
| | 136 | } |
| | 137 | |
| | 138 | static inline u32 DVAL_LH(const void *data) |
| | 139 | { |
| | 140 | return get_unaligned_le32(data); |
| | 141 | } |
| | 142 | |
| | 143 | static __le32 |
| | 144 | ncp_reply_dword(struct ncp_server *server, int offset) |
| | 145 | { |
| | 146 | return get_unaligned((__le32 *)ncp_reply_data(server, offset)); |
| | 147 | } |
| | 148 | |
| | 149 | static inline __u32 ncp_reply_dword_lh(struct ncp_server* server, int offset) { |
| | 150 | return le32_to_cpu(ncp_reply_dword(server, offset)); |
| | 151 | } |
| | 152 | |
| | 153 | int |
| | 154 | ncp_negotiate_buffersize(struct ncp_server *server, int size, int *target) |
| | 155 | { |
| | 156 | int result; |
| | 157 | |
| | 158 | ncp_init_request(server); |
| | 159 | ncp_add_be16(server, size); |
| | 160 | |
| | 161 | if ((result = ncp_request(server, 33)) != 0) { |
| | 162 | ncp_unlock_server(server); |
| | 163 | return result; |
| | 164 | } |
| | 165 | *target = min_t(unsigned int, ncp_reply_be16(server, 0), size); |
| | 166 | |
| | 167 | ncp_unlock_server(server); |
| | 168 | return 0; |
| | 169 | } |
| | 170 | |
| | 171 | |
| | 172 | /* options: |
| | 173 | * bit 0 ipx checksum |
| | 174 | * bit 1 packet signing |
| | 175 | */ |
| | 176 | int |
| | 177 | ncp_negotiate_size_and_options(struct ncp_server *server, |
| | 178 | int size, int options, int *ret_size, int *ret_options) { |
| | 179 | int result; |
| | 180 | |
| | 181 | /* there is minimum */ |
| | 182 | if (size < NCP_BLOCK_SIZE) size = NCP_BLOCK_SIZE; |
| | 183 | |
| | 184 | ncp_init_request(server); |
| | 185 | ncp_add_be16(server, size); |
| | 186 | ncp_add_byte(server, options); |
| | 187 | |
| | 188 | if ((result = ncp_request(server, 0x61)) != 0) |
| | 189 | { |
| | 190 | ncp_unlock_server(server); |
| | 191 | return result; |
| | 192 | } |
| | 193 | |
| | 194 | /* NCP over UDP returns 0 (!!!) */ |
| | 195 | result = ncp_reply_be16(server, 0); |
| | 196 | if (result >= NCP_BLOCK_SIZE) |
| | 197 | size = min(result, size); |
| | 198 | *ret_size = size; |
| | 199 | *ret_options = ncp_reply_byte(server, 4); |
| | 200 | |
| | 201 | ncp_unlock_server(server); |
| | 202 | return 0; |
| | 203 | } |
| | 204 | |
| | 205 | int ncp_get_volume_info_with_number(struct ncp_server* server, |
| | 206 | int n, struct ncp_volume_info* target) { |
| | 207 | int result; |
| | 208 | int len; |
| | 209 | |
| | 210 | ncp_init_request_s(server, 44); |
| | 211 | ncp_add_byte(server, n); |
| | 212 | |
| | 213 | if ((result = ncp_request(server, 22)) != 0) { |
| | 214 | goto out; |
| | 215 | } |
| | 216 | target->total_blocks = ncp_reply_dword_lh(server, 0); |
| | 217 | target->free_blocks = ncp_reply_dword_lh(server, 4); |
| | 218 | target->purgeable_blocks = ncp_reply_dword_lh(server, 8); |
| | 219 | target->not_yet_purgeable_blocks = ncp_reply_dword_lh(server, 12); |
| | 220 | target->total_dir_entries = ncp_reply_dword_lh(server, 16); |
| | 221 | target->available_dir_entries = ncp_reply_dword_lh(server, 20); |
| | 222 | target->sectors_per_block = ncp_reply_byte(server, 28); |
| | 223 | |
| | 224 | memset(&(target->volume_name), 0, sizeof(target->volume_name)); |
| | 225 | |
| | 226 | result = -EIO; |
| | 227 | len = ncp_reply_byte(server, 29); |
| | 228 | if (len > NCP_VOLNAME_LEN) { |
| | 229 | ncp_dbg(1, "volume name too long: %d\n", len); |
| | 230 | goto out; |
| | 231 | } |
| | 232 | memcpy(&(target->volume_name), ncp_reply_data(server, 30), len); |
| | 233 | result = 0; |
| | 234 | out: |
| | 235 | ncp_unlock_server(server); |
| | 236 | return result; |
| | 237 | } |
| | 238 | |
| | 239 | int ncp_get_directory_info(struct ncp_server* server, __u8 n, |
| | 240 | struct ncp_volume_info* target) { |
| | 241 | int result; |
| | 242 | int len; |
| | 243 | |
| | 244 | ncp_init_request_s(server, 45); |
| | 245 | ncp_add_byte(server, n); |
| | 246 | |
| | 247 | if ((result = ncp_request(server, 22)) != 0) { |
| | 248 | goto out; |
| | 249 | } |
| | 250 | target->total_blocks = ncp_reply_dword_lh(server, 0); |
| | 251 | target->free_blocks = ncp_reply_dword_lh(server, 4); |
| | 252 | target->purgeable_blocks = 0; |
| | 253 | target->not_yet_purgeable_blocks = 0; |
| | 254 | target->total_dir_entries = ncp_reply_dword_lh(server, 8); |
| | 255 | target->available_dir_entries = ncp_reply_dword_lh(server, 12); |
| | 256 | target->sectors_per_block = ncp_reply_byte(server, 20); |
| | 257 | |
| | 258 | memset(&(target->volume_name), 0, sizeof(target->volume_name)); |
| | 259 | |
| | 260 | result = -EIO; |
| | 261 | len = ncp_reply_byte(server, 21); |
| | 262 | if (len > NCP_VOLNAME_LEN) { |
| | 263 | ncp_dbg(1, "volume name too long: %d\n", len); |
| | 264 | goto out; |
| | 265 | } |
| | 266 | memcpy(&(target->volume_name), ncp_reply_data(server, 22), len); |
| | 267 | result = 0; |
| | 268 | out: |
| | 269 | ncp_unlock_server(server); |
| | 270 | return result; |
| | 271 | } |
| | 272 | |
| | 273 | int |
| | 274 | ncp_close_file(struct ncp_server *server, const char *file_id) |
| | 275 | { |
| | 276 | int result; |
| | 277 | |
| | 278 | ncp_init_request(server); |
| | 279 | ncp_add_byte(server, 0); |
| | 280 | ncp_add_mem(server, file_id, 6); |
| | 281 | |
| | 282 | result = ncp_request(server, 66); |
| | 283 | ncp_unlock_server(server); |
| | 284 | return result; |
| | 285 | } |
| | 286 | |
| | 287 | int |
| | 288 | ncp_make_closed(struct inode *inode) |
| | 289 | { |
| | 290 | int err; |
| | 291 | |
| | 292 | err = 0; |
| | 293 | mutex_lock(&NCP_FINFO(inode)->open_mutex); |
| | 294 | if (atomic_read(&NCP_FINFO(inode)->opened) == 1) { |
| | 295 | atomic_set(&NCP_FINFO(inode)->opened, 0); |
| | 296 | err = ncp_close_file(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle); |
| | 297 | |
| | 298 | if (!err) |
| | 299 | ncp_vdbg("volnum=%d, dirent=%u, error=%d\n", |
| | 300 | NCP_FINFO(inode)->volNumber, |
| | 301 | NCP_FINFO(inode)->dirEntNum, err); |
| | 302 | } |
| | 303 | mutex_unlock(&NCP_FINFO(inode)->open_mutex); |
| | 304 | return err; |
| | 305 | } |
| | 306 | |
| | 307 | static void ncp_add_handle_path(struct ncp_server *server, __u8 vol_num, |
| | 308 | __le32 dir_base, int have_dir_base, |
| | 309 | const char *path) |
| | 310 | { |
| | 311 | ncp_add_byte(server, vol_num); |
| | 312 | ncp_add_dword(server, dir_base); |
| | 313 | if (have_dir_base != 0) { |
| | 314 | ncp_add_byte(server, 1); /* dir_base */ |
| | 315 | } else { |
| | 316 | ncp_add_byte(server, 0xff); /* no handle */ |
| | 317 | } |
| | 318 | if (path != NULL) { |
| | 319 | ncp_add_byte(server, 1); /* 1 component */ |
| | 320 | ncp_add_pstring(server, path); |
| | 321 | } else { |
| | 322 | ncp_add_byte(server, 0); |
| | 323 | } |
| | 324 | } |
| | 325 | |
| | 326 | int ncp_dirhandle_alloc(struct ncp_server* server, __u8 volnum, __le32 dirent, |
| | 327 | __u8* dirhandle) { |
| | 328 | int result; |
| | 329 | |
| | 330 | ncp_init_request(server); |
| | 331 | ncp_add_byte(server, 12); /* subfunction */ |
| | 332 | ncp_add_byte(server, NW_NS_DOS); |
| | 333 | ncp_add_byte(server, 0); |
| | 334 | ncp_add_word(server, 0); |
| | 335 | ncp_add_handle_path(server, volnum, dirent, 1, NULL); |
| | 336 | if ((result = ncp_request(server, 87)) == 0) { |
| | 337 | *dirhandle = ncp_reply_byte(server, 0); |
| | 338 | } |
| | 339 | ncp_unlock_server(server); |
| | 340 | return result; |
| | 341 | } |
| | 342 | |
| | 343 | int ncp_dirhandle_free(struct ncp_server* server, __u8 dirhandle) { |
| | 344 | int result; |
| | 345 | |
| | 346 | ncp_init_request_s(server, 20); |
| | 347 | ncp_add_byte(server, dirhandle); |
| | 348 | result = ncp_request(server, 22); |
| | 349 | ncp_unlock_server(server); |
| | 350 | return result; |
| | 351 | } |
| | 352 | |
| | 353 | void ncp_extract_file_info(const void *structure, struct nw_info_struct *target) |
| | 354 | { |
| | 355 | const __u8 *name_len; |
| | 356 | const int info_struct_size = offsetof(struct nw_info_struct, nameLen); |
| | 357 | |
| | 358 | memcpy(target, structure, info_struct_size); |
| | 359 | name_len = structure + info_struct_size; |
| | 360 | target->nameLen = *name_len; |
| | 361 | memcpy(target->entryName, name_len + 1, *name_len); |
| | 362 | target->entryName[*name_len] = '\0'; |
| | 363 | target->volNumber = le32_to_cpu(target->volNumber); |
| | 364 | return; |
| | 365 | } |
| | 366 | |
| | 367 | #ifdef CONFIG_NCPFS_NFS_NS |
| | 368 | static inline void ncp_extract_nfs_info(const unsigned char *structure, |
| | 369 | struct nw_nfs_info *target) |
| | 370 | { |
| | 371 | target->mode = DVAL_LH(structure); |
| | 372 | target->rdev = DVAL_LH(structure + 8); |
| | 373 | } |
| | 374 | #endif |
| | 375 | |
| | 376 | int ncp_obtain_nfs_info(struct ncp_server *server, |
| | 377 | struct nw_info_struct *target) |
| | 378 | |
| | 379 | { |
| | 380 | int result = 0; |
| | 381 | #ifdef CONFIG_NCPFS_NFS_NS |
| | 382 | __u32 volnum = target->volNumber; |
| | 383 | |
| | 384 | if (ncp_is_nfs_extras(server, volnum)) { |
| | 385 | ncp_init_request(server); |
| | 386 | ncp_add_byte(server, 19); /* subfunction */ |
| | 387 | ncp_add_byte(server, server->name_space[volnum]); |
| | 388 | ncp_add_byte(server, NW_NS_NFS); |
| | 389 | ncp_add_byte(server, 0); |
| | 390 | ncp_add_byte(server, volnum); |
| | 391 | ncp_add_dword(server, target->dirEntNum); |
| | 392 | /* We must retrieve both nlinks and rdev, otherwise some server versions |
| | 393 | report zeroes instead of valid data */ |
| | 394 | ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); |
| | 395 | |
| | 396 | if ((result = ncp_request(server, 87)) == 0) { |
| | 397 | ncp_extract_nfs_info(ncp_reply_data(server, 0), &target->nfs); |
| | 398 | ncp_dbg(1, "(%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 | */ |
| | 420 | int ncp_obtain_info(struct ncp_server *server, struct inode *dir, const char *path, |
| | 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 | pr_err("%s: invalid call\n", __func__); |
| | 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, |
| | 455 | __u8 ns, __u8 volnum, __le32 dirent, |
| | 456 | const char *path, /* At most 1 component */ |
| | 457 | __le32 *DOS_dir_base) |
| | 458 | { |
| | 459 | int result; |
| | 460 | |
| | 461 | ncp_init_request(server); |
| | 462 | ncp_add_byte(server, 6); /* subfunction */ |
| | 463 | ncp_add_byte(server, ns); |
| | 464 | ncp_add_byte(server, ns); |
| | 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 | ncp_dbg(1, "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 | |
| | 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 | ncp_dbg(1, "namespace[%d] = %d\n", volume, server->name_space[volume]); |
| | 535 | |
| | 536 | if (server->name_space[volume] == ns) |
| | 537 | return 0; |
| | 538 | server->name_space[volume] = ns; |
| | 539 | return 1; |
| | 540 | } |
| | 541 | |
| | 542 | static int |
| | 543 | ncp_ObtainSpecificDirBase(struct ncp_server *server, |
| | 544 | __u8 nsSrc, __u8 nsDst, __u8 vol_num, __le32 dir_base, |
| | 545 | const char *path, /* At most 1 component */ |
| | 546 | __le32 *dirEntNum, __le32 *DosDirNum) |
| | 547 | { |
| | 548 | int result; |
| | 549 | |
| | 550 | ncp_init_request(server); |
| | 551 | ncp_add_byte(server, 6); /* subfunction */ |
| | 552 | ncp_add_byte(server, nsSrc); |
| | 553 | ncp_add_byte(server, nsDst); |
| | 554 | ncp_add_word(server, cpu_to_le16(0x8006)); /* get all */ |
| | 555 | ncp_add_dword(server, RIM_ALL); |
| | 556 | ncp_add_handle_path(server, vol_num, dir_base, 1, path); |
| | 557 | |
| | 558 | if ((result = ncp_request(server, 87)) != 0) |
| | 559 | { |
| | 560 | ncp_unlock_server(server); |
| | 561 | return result; |
| | 562 | } |
| | 563 | |
| | 564 | if (dirEntNum) |
| | 565 | *dirEntNum = ncp_reply_dword(server, 0x30); |
| | 566 | if (DosDirNum) |
| | 567 | *DosDirNum = ncp_reply_dword(server, 0x34); |
| | 568 | ncp_unlock_server(server); |
| | 569 | return 0; |
| | 570 | } |
| | 571 | |
| | 572 | int |
| | 573 | ncp_mount_subdir(struct ncp_server *server, |
| | 574 | __u8 volNumber, __u8 srcNS, __le32 dirEntNum, |
| | 575 | __u32* volume, __le32* newDirEnt, __le32* newDosEnt) |
| | 576 | { |
| | 577 | int dstNS; |
| | 578 | int result; |
| | 579 | |
| | 580 | ncp_update_known_namespace(server, volNumber, &dstNS); |
| | 581 | if ((result = ncp_ObtainSpecificDirBase(server, srcNS, dstNS, volNumber, |
| | 582 | dirEntNum, NULL, newDirEnt, newDosEnt)) != 0) |
| | 583 | { |
| | 584 | return result; |
| | 585 | } |
| | 586 | *volume = volNumber; |
| | 587 | server->m.mounted_vol[1] = 0; |
| | 588 | server->m.mounted_vol[0] = 'X'; |
| | 589 | return 0; |
| | 590 | } |
| | 591 | |
| | 592 | int |
| | 593 | ncp_get_volume_root(struct ncp_server *server, |
| | 594 | const char *volname, __u32* volume, __le32* dirent, __le32* dosdirent) |
| | 595 | { |
| | 596 | int result; |
| | 597 | |
| | 598 | ncp_dbg(1, "looking up vol %s\n", volname); |
| | 599 | |
| | 600 | ncp_init_request(server); |
| | 601 | ncp_add_byte(server, 22); /* Subfunction: Generate dir handle */ |
| | 602 | ncp_add_byte(server, 0); /* DOS namespace */ |
| | 603 | ncp_add_byte(server, 0); /* reserved */ |
| | 604 | ncp_add_byte(server, 0); /* reserved */ |
| | 605 | ncp_add_byte(server, 0); /* reserved */ |
| | 606 | |
| | 607 | ncp_add_byte(server, 0); /* faked volume number */ |
| | 608 | ncp_add_dword(server, 0); /* faked dir_base */ |
| | 609 | ncp_add_byte(server, 0xff); /* Don't have a dir_base */ |
| | 610 | ncp_add_byte(server, 1); /* 1 path component */ |
| | 611 | ncp_add_pstring(server, volname); |
| | 612 | |
| | 613 | if ((result = ncp_request(server, 87)) != 0) { |
| | 614 | ncp_unlock_server(server); |
| | 615 | return result; |
| | 616 | } |
| | 617 | *dirent = *dosdirent = ncp_reply_dword(server, 4); |
| | 618 | *volume = ncp_reply_byte(server, 8); |
| | 619 | ncp_unlock_server(server); |
| | 620 | return 0; |
| | 621 | } |
| | 622 | |
| | 623 | int |
| | 624 | ncp_lookup_volume(struct ncp_server *server, |
| | 625 | const char *volname, struct nw_info_struct *target) |
| | 626 | { |
| | 627 | int result; |
| | 628 | |
| | 629 | memset(target, 0, sizeof(*target)); |
| | 630 | result = ncp_get_volume_root(server, volname, |
| | 631 | &target->volNumber, &target->dirEntNum, &target->DosDirNum); |
| | 632 | if (result) { |
| | 633 | return result; |
| | 634 | } |
| | 635 | ncp_update_known_namespace(server, target->volNumber, NULL); |
| | 636 | target->nameLen = strlen(volname); |
| | 637 | memcpy(target->entryName, volname, target->nameLen+1); |
| | 638 | target->attributes = aDIR; |
| | 639 | /* set dates to Jan 1, 1986 00:00 */ |
| | 640 | target->creationTime = target->modifyTime = cpu_to_le16(0x0000); |
| | 641 | target->creationDate = target->modifyDate = target->lastAccessDate = cpu_to_le16(0x0C21); |
| | 642 | target->nfs.mode = 0; |
| | 643 | return 0; |
| | 644 | } |
| | 645 | |
| | 646 | int ncp_modify_file_or_subdir_dos_info_path(struct ncp_server *server, |
| | 647 | struct inode *dir, |
| | 648 | const char *path, |
| | 649 | __le32 info_mask, |
| | 650 | const struct nw_modify_dos_info *info) |
| | 651 | { |
| | 652 | __u8 volnum = NCP_FINFO(dir)->volNumber; |
| | 653 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; |
| | 654 | int result; |
| | 655 | |
| | 656 | ncp_init_request(server); |
| | 657 | ncp_add_byte(server, 7); /* subfunction */ |
| | 658 | ncp_add_byte(server, server->name_space[volnum]); |
| | 659 | ncp_add_byte(server, 0); /* reserved */ |
| | 660 | ncp_add_word(server, cpu_to_le16(0x8006)); /* search attribs: all */ |
| | 661 | |
| | 662 | ncp_add_dword(server, info_mask); |
| | 663 | ncp_add_mem(server, info, sizeof(*info)); |
| | 664 | ncp_add_handle_path(server, volnum, dirent, 1, path); |
| | 665 | |
| | 666 | result = ncp_request(server, 87); |
| | 667 | ncp_unlock_server(server); |
| | 668 | return result; |
| | 669 | } |
| | 670 | |
| | 671 | int ncp_modify_file_or_subdir_dos_info(struct ncp_server *server, |
| | 672 | struct inode *dir, |
| | 673 | __le32 info_mask, |
| | 674 | const struct nw_modify_dos_info *info) |
| | 675 | { |
| | 676 | return ncp_modify_file_or_subdir_dos_info_path(server, dir, NULL, |
| | 677 | info_mask, info); |
| | 678 | } |
| | 679 | |
| | 680 | #ifdef CONFIG_NCPFS_NFS_NS |
| | 681 | int ncp_modify_nfs_info(struct ncp_server *server, __u8 volnum, __le32 dirent, |
| | 682 | __u32 mode, __u32 rdev) |
| | 683 | |
| | 684 | { |
| | 685 | int result = 0; |
| | 686 | |
| | 687 | ncp_init_request(server); |
| | 688 | if (server->name_space[volnum] == NW_NS_NFS) { |
| | 689 | ncp_add_byte(server, 25); /* subfunction */ |
| | 690 | ncp_add_byte(server, server->name_space[volnum]); |
| | 691 | ncp_add_byte(server, NW_NS_NFS); |
| | 692 | ncp_add_byte(server, volnum); |
| | 693 | ncp_add_dword(server, dirent); |
| | 694 | /* we must always operate on both nlinks and rdev, otherwise |
| | 695 | rdev is not set */ |
| | 696 | ncp_add_dword_lh(server, NSIBM_NFS_MODE | NSIBM_NFS_NLINKS | NSIBM_NFS_RDEV); |
| | 697 | ncp_add_dword_lh(server, mode); |
| | 698 | ncp_add_dword_lh(server, 1); /* nlinks */ |
| | 699 | ncp_add_dword_lh(server, rdev); |
| | 700 | result = ncp_request(server, 87); |
| | 701 | } |
| | 702 | ncp_unlock_server(server); |
| | 703 | return result; |
| | 704 | } |
| | 705 | #endif |
| | 706 | |
| | 707 | |
| | 708 | static int |
| | 709 | ncp_DeleteNSEntry(struct ncp_server *server, |
| | 710 | __u8 have_dir_base, __u8 volnum, __le32 dirent, |
| | 711 | const char* name, __u8 ns, __le16 attr) |
| | 712 | { |
| | 713 | int result; |
| | 714 | |
| | 715 | ncp_init_request(server); |
| | 716 | ncp_add_byte(server, 8); /* subfunction */ |
| | 717 | ncp_add_byte(server, ns); |
| | 718 | ncp_add_byte(server, 0); /* reserved */ |
| | 719 | ncp_add_word(server, attr); /* search attribs: all */ |
| | 720 | ncp_add_handle_path(server, volnum, dirent, have_dir_base, name); |
| | 721 | |
| | 722 | result = ncp_request(server, 87); |
| | 723 | ncp_unlock_server(server); |
| | 724 | return result; |
| | 725 | } |
| | 726 | |
| | 727 | int |
| | 728 | ncp_del_file_or_subdir2(struct ncp_server *server, |
| | 729 | struct dentry *dentry) |
| | 730 | { |
| | 731 | struct inode *inode = d_inode(dentry); |
| | 732 | __u8 volnum; |
| | 733 | __le32 dirent; |
| | 734 | |
| | 735 | if (!inode) { |
| | 736 | return 0xFF; /* Any error */ |
| | 737 | } |
| | 738 | volnum = NCP_FINFO(inode)->volNumber; |
| | 739 | dirent = NCP_FINFO(inode)->DosDirNum; |
| | 740 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, NULL, NW_NS_DOS, cpu_to_le16(0x8006)); |
| | 741 | } |
| | 742 | |
| | 743 | int |
| | 744 | ncp_del_file_or_subdir(struct ncp_server *server, |
| | 745 | struct inode *dir, const char *name) |
| | 746 | { |
| | 747 | __u8 volnum = NCP_FINFO(dir)->volNumber; |
| | 748 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; |
| | 749 | int name_space; |
| | 750 | |
| | 751 | name_space = server->name_space[volnum]; |
| | 752 | #ifdef CONFIG_NCPFS_NFS_NS |
| | 753 | if (name_space == NW_NS_NFS) |
| | 754 | { |
| | 755 | int result; |
| | 756 | |
| | 757 | result=ncp_obtain_DOS_dir_base(server, name_space, volnum, dirent, name, &dirent); |
| | 758 | if (result) return result; |
| | 759 | name = NULL; |
| | 760 | name_space = NW_NS_DOS; |
| | 761 | } |
| | 762 | #endif /* CONFIG_NCPFS_NFS_NS */ |
| | 763 | return ncp_DeleteNSEntry(server, 1, volnum, dirent, name, name_space, cpu_to_le16(0x8006)); |
| | 764 | } |
| | 765 | |
| | 766 | static inline void ConvertToNWfromDWORD(__u16 v0, __u16 v1, __u8 ret[6]) |
| | 767 | { |
| | 768 | __le16 *dest = (__le16 *) ret; |
| | 769 | dest[1] = cpu_to_le16(v0); |
| | 770 | dest[2] = cpu_to_le16(v1); |
| | 771 | dest[0] = cpu_to_le16(v0 + 1); |
| | 772 | return; |
| | 773 | } |
| | 774 | |
| | 775 | /* If both dir and name are NULL, then in target there's already a |
| | 776 | looked-up entry that wants to be opened. */ |
| | 777 | int ncp_open_create_file_or_subdir(struct ncp_server *server, |
| | 778 | struct inode *dir, const char *name, |
| | 779 | int open_create_mode, |
| | 780 | __le32 create_attributes, |
| | 781 | __le16 desired_acc_rights, |
| | 782 | struct ncp_entry_info *target) |
| | 783 | { |
| | 784 | __le16 search_attribs = cpu_to_le16(0x0006); |
| | 785 | __u8 volnum; |
| | 786 | __le32 dirent; |
| | 787 | int result; |
| | 788 | |
| | 789 | volnum = NCP_FINFO(dir)->volNumber; |
| | 790 | dirent = NCP_FINFO(dir)->dirEntNum; |
| | 791 | |
| | 792 | if ((create_attributes & aDIR) != 0) { |
| | 793 | search_attribs |= cpu_to_le16(0x8000); |
| | 794 | } |
| | 795 | ncp_init_request(server); |
| | 796 | ncp_add_byte(server, 1); /* subfunction */ |
| | 797 | ncp_add_byte(server, server->name_space[volnum]); |
| | 798 | ncp_add_byte(server, open_create_mode); |
| | 799 | ncp_add_word(server, search_attribs); |
| | 800 | ncp_add_dword(server, RIM_ALL); |
| | 801 | ncp_add_dword(server, create_attributes); |
| | 802 | /* The desired acc rights seem to be the inherited rights mask |
| | 803 | for directories */ |
| | 804 | ncp_add_word(server, desired_acc_rights); |
| | 805 | ncp_add_handle_path(server, volnum, dirent, 1, name); |
| | 806 | |
| | 807 | if ((result = ncp_request(server, 87)) != 0) |
| | 808 | goto out; |
| | 809 | if (!(create_attributes & aDIR)) |
| | 810 | target->opened = 1; |
| | 811 | |
| | 812 | /* in target there's a new finfo to fill */ |
| | 813 | ncp_extract_file_info(ncp_reply_data(server, 6), &(target->i)); |
| | 814 | target->volume = target->i.volNumber; |
| | 815 | ConvertToNWfromDWORD(ncp_reply_le16(server, 0), |
| | 816 | ncp_reply_le16(server, 2), |
| | 817 | target->file_handle); |
| | 818 | |
| | 819 | ncp_unlock_server(server); |
| | 820 | |
| | 821 | (void)ncp_obtain_nfs_info(server, &(target->i)); |
| | 822 | return 0; |
| | 823 | |
| | 824 | out: |
| | 825 | ncp_unlock_server(server); |
| | 826 | return result; |
| | 827 | } |
| | 828 | |
| | 829 | int |
| | 830 | ncp_initialize_search(struct ncp_server *server, struct inode *dir, |
| | 831 | struct nw_search_sequence *target) |
| | 832 | { |
| | 833 | __u8 volnum = NCP_FINFO(dir)->volNumber; |
| | 834 | __le32 dirent = NCP_FINFO(dir)->dirEntNum; |
| | 835 | int result; |
| | 836 | |
| | 837 | ncp_init_request(server); |
| | 838 | ncp_add_byte(server, 2); /* subfunction */ |
| | 839 | ncp_add_byte(server, server->name_space[volnum]); |
| | 840 | ncp_add_byte(server, 0); /* reserved */ |
| | 841 | ncp_add_handle_path(server, volnum, dirent, 1, NULL); |
| | 842 | |
| | 843 | result = ncp_request(server, 87); |
| | 844 | if (result) |
| | 845 | goto out; |
| | 846 | memcpy(target, ncp_reply_data(server, 0), sizeof(*target)); |
| | 847 | |
| | 848 | out: |
| | 849 | ncp_unlock_server(server); |
| | 850 | return result; |
| | 851 | } |
| | 852 | |
| | 853 | int ncp_search_for_fileset(struct ncp_server *server, |
| | 854 | struct nw_search_sequence *seq, |
| | 855 | int* more, |
| | 856 | int* cnt, |
| | 857 | char* buffer, |
| | 858 | size_t bufsize, |
| | 859 | char** rbuf, |
| | 860 | size_t* rsize) |
| | 861 | { |
| | 862 | int result; |
| | 863 | |
| | 864 | ncp_init_request(server); |
| | 865 | ncp_add_byte(server, 20); |
| | 866 | ncp_add_byte(server, server->name_space[seq->volNumber]); |
| | 867 | ncp_add_byte(server, 0); /* datastream */ |
| | 868 | ncp_add_word(server, cpu_to_le16(0x8006)); |
| | 869 | ncp_add_dword(server, RIM_ALL); |
| | 870 | ncp_add_word(server, cpu_to_le16(32767)); /* max returned items */ |
| | 871 | ncp_add_mem(server, seq, 9); |
| | 872 | #ifdef CONFIG_NCPFS_NFS_NS |
| | 873 | if (server->name_space[seq->volNumber] == NW_NS_NFS) { |
| | 874 | ncp_add_byte(server, 0); /* 0 byte pattern */ |
| | 875 | } else |
| | 876 | #endif |
| | 877 | { |
| | 878 | ncp_add_byte(server, 2); /* 2 byte pattern */ |
| | 879 | ncp_add_byte(server, 0xff); /* following is a wildcard */ |
| | 880 | ncp_add_byte(server, '*'); |
| | 881 | } |
| | 882 | result = ncp_request2(server, 87, buffer, bufsize); |
| | 883 | if (result) { |
| | 884 | ncp_unlock_server(server); |
| | 885 | return result; |
| | 886 | } |
| | 887 | if (server->ncp_reply_size < 12) { |
| | 888 | ncp_unlock_server(server); |
| | 889 | return 0xFF; |
| | 890 | } |
| | 891 | *rsize = server->ncp_reply_size - 12; |
| | 892 | ncp_unlock_server(server); |
| | 893 | buffer = buffer + sizeof(struct ncp_reply_header); |
| | 894 | *rbuf = buffer + 12; |
| | 895 | *cnt = WVAL_LH(buffer + 10); |
| | 896 | *more = BVAL(buffer + 9); |
| | 897 | memcpy(seq, buffer, 9); |
| | 898 | return 0; |
| | 899 | } |
| | 900 | |
| | 901 | static int |
| | 902 | ncp_RenameNSEntry(struct ncp_server *server, |
| | 903 | struct inode *old_dir, const char *old_name, __le16 old_type, |
| | 904 | struct inode *new_dir, const char *new_name) |
| | 905 | { |
| | 906 | int result = -EINVAL; |
| | 907 | |
| | 908 | if ((old_dir == NULL) || (old_name == NULL) || |
| | 909 | (new_dir == NULL) || (new_name == NULL)) |
| | 910 | goto out; |
| | 911 | |
| | 912 | ncp_init_request(server); |
| | 913 | ncp_add_byte(server, 4); /* subfunction */ |
| | 914 | ncp_add_byte(server, server->name_space[NCP_FINFO(old_dir)->volNumber]); |
| | 915 | ncp_add_byte(server, 1); /* rename flag */ |
| | 916 | ncp_add_word(server, old_type); /* search attributes */ |
| | 917 | |
| | 918 | /* source Handle Path */ |
| | 919 | ncp_add_byte(server, NCP_FINFO(old_dir)->volNumber); |
| | 920 | ncp_add_dword(server, NCP_FINFO(old_dir)->dirEntNum); |
| | 921 | ncp_add_byte(server, 1); |
| | 922 | ncp_add_byte(server, 1); /* 1 source component */ |
| | 923 | |
| | 924 | /* dest Handle Path */ |
| | 925 | ncp_add_byte(server, NCP_FINFO(new_dir)->volNumber); |
| | 926 | ncp_add_dword(server, NCP_FINFO(new_dir)->dirEntNum); |
| | 927 | ncp_add_byte(server, 1); |
| | 928 | ncp_add_byte(server, 1); /* 1 destination component */ |
| | 929 | |
| | 930 | /* source path string */ |
| | 931 | ncp_add_pstring(server, old_name); |
| | 932 | /* dest path string */ |
| | 933 | ncp_add_pstring(server, new_name); |
| | 934 | |
| | 935 | result = ncp_request(server, 87); |
| | 936 | ncp_unlock_server(server); |
| | 937 | out: |
| | 938 | return result; |
| | 939 | } |
| | 940 | |
| | 941 | int ncp_ren_or_mov_file_or_subdir(struct ncp_server *server, |
| | 942 | struct inode *old_dir, const char *old_name, |
| | 943 | struct inode *new_dir, const char *new_name) |
| | 944 | { |
| | 945 | int result; |
| | 946 | __le16 old_type = cpu_to_le16(0x06); |
| | 947 | |
| | 948 | /* If somebody can do it atomic, call me... vandrove@vc.cvut.cz */ |
| | 949 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, |
| | 950 | new_dir, new_name); |
| | 951 | if (result == 0xFF) /* File Not Found, try directory */ |
| | 952 | { |
| | 953 | old_type = cpu_to_le16(0x16); |
| | 954 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, |
| | 955 | new_dir, new_name); |
| | 956 | } |
| | 957 | if (result != 0x92) return result; /* All except NO_FILES_RENAMED */ |
| | 958 | result = ncp_del_file_or_subdir(server, new_dir, new_name); |
| | 959 | if (result != 0) return -EACCES; |
| | 960 | result = ncp_RenameNSEntry(server, old_dir, old_name, old_type, |
| | 961 | new_dir, new_name); |
| | 962 | return result; |
| | 963 | } |
| | 964 | |
| | 965 | |
| | 966 | /* We have to transfer to/from user space */ |
| | 967 | int |
| | 968 | ncp_read_kernel(struct ncp_server *server, const char *file_id, |
| | 969 | __u32 offset, __u16 to_read, char *target, int *bytes_read) |
| | 970 | { |
| | 971 | const char *source; |
| | 972 | int result; |
| | 973 | |
| | 974 | ncp_init_request(server); |
| | 975 | ncp_add_byte(server, 0); |
| | 976 | ncp_add_mem(server, file_id, 6); |
| | 977 | ncp_add_be32(server, offset); |
| | 978 | ncp_add_be16(server, to_read); |
| | 979 | |
| | 980 | if ((result = ncp_request(server, 72)) != 0) { |
| | 981 | goto out; |
| | 982 | } |
| | 983 | *bytes_read = ncp_reply_be16(server, 0); |
| | 984 | if (*bytes_read > to_read) { |
| | 985 | result = -EINVAL; |
| | 986 | goto out; |
| | 987 | } |
| | 988 | source = ncp_reply_data(server, 2 + (offset & 1)); |
| | 989 | |
| | 990 | memcpy(target, source, *bytes_read); |
| | 991 | out: |
| | 992 | ncp_unlock_server(server); |
| | 993 | return result; |
| | 994 | } |
| | 995 | |
| | 996 | /* There is a problem... egrep and some other silly tools do: |
| | 997 | x = mmap(NULL, MAP_PRIVATE, PROT_READ|PROT_WRITE, <ncpfs fd>, 32768); |
| | 998 | read(<ncpfs fd>, x, 32768); |
| | 999 | Now copying read result by copy_to_user causes pagefault. This pagefault |
| | 1000 | could not be handled because of server was locked due to read. So we have |
| | 1001 | to use temporary buffer. So ncp_unlock_server must be done before |
| | 1002 | copy_to_user (and for write, copy_from_user must be done before |
| | 1003 | ncp_init_request... same applies for send raw packet ioctl). Because of |
| | 1004 | file is normally read in bigger chunks, caller provides kmalloced |
| | 1005 | (vmalloced) chunk of memory with size >= to_read... |
| | 1006 | */ |
| | 1007 | int |
| | 1008 | ncp_read_bounce(struct ncp_server *server, const char *file_id, |
| | 1009 | __u32 offset, __u16 to_read, struct iov_iter *to, |
| | 1010 | int *bytes_read, void *bounce, __u32 bufsize) |
| | 1011 | { |
| | 1012 | int result; |
| | 1013 | |
| | 1014 | ncp_init_request(server); |
| | 1015 | ncp_add_byte(server, 0); |
| | 1016 | ncp_add_mem(server, file_id, 6); |
| | 1017 | ncp_add_be32(server, offset); |
| | 1018 | ncp_add_be16(server, to_read); |
| | 1019 | result = ncp_request2(server, 72, bounce, bufsize); |
| | 1020 | ncp_unlock_server(server); |
| | 1021 | if (!result) { |
| | 1022 | int len = get_unaligned_be16((char *)bounce + |
| | 1023 | sizeof(struct ncp_reply_header)); |
| | 1024 | result = -EIO; |
| | 1025 | if (len <= to_read) { |
| | 1026 | char* source; |
| | 1027 | |
| | 1028 | source = (char*)bounce + |
| | 1029 | sizeof(struct ncp_reply_header) + 2 + |
| | 1030 | (offset & 1); |
| | 1031 | *bytes_read = len; |
| | 1032 | result = 0; |
| | 1033 | if (copy_to_iter(source, len, to) != len) |
| | 1034 | result = -EFAULT; |
| | 1035 | } |
| | 1036 | } |
| | 1037 | return result; |
| | 1038 | } |
| | 1039 | |
| | 1040 | int |
| | 1041 | ncp_write_kernel(struct ncp_server *server, const char *file_id, |
| | 1042 | __u32 offset, __u16 to_write, |
| | 1043 | const char *source, int *bytes_written) |
| | 1044 | { |
| | 1045 | int result; |
| | 1046 | |
| | 1047 | ncp_init_request(server); |
| | 1048 | ncp_add_byte(server, 0); |
| | 1049 | ncp_add_mem(server, file_id, 6); |
| | 1050 | ncp_add_be32(server, offset); |
| | 1051 | ncp_add_be16(server, to_write); |
| | 1052 | ncp_add_mem(server, source, to_write); |
| | 1053 | |
| | 1054 | if ((result = ncp_request(server, 73)) == 0) |
| | 1055 | *bytes_written = to_write; |
| | 1056 | ncp_unlock_server(server); |
| | 1057 | return result; |
| | 1058 | } |
| | 1059 | |
| | 1060 | #ifdef CONFIG_NCPFS_IOCTL_LOCKING |
| | 1061 | int |
| | 1062 | ncp_LogPhysicalRecord(struct ncp_server *server, const char *file_id, |
| | 1063 | __u8 locktype, __u32 offset, __u32 length, __u16 timeout) |
| | 1064 | { |
| | 1065 | int result; |
| | 1066 | |
| | 1067 | ncp_init_request(server); |
| | 1068 | ncp_add_byte(server, locktype); |
| | 1069 | ncp_add_mem(server, file_id, 6); |
| | 1070 | ncp_add_be32(server, offset); |
| | 1071 | ncp_add_be32(server, length); |
| | 1072 | ncp_add_be16(server, timeout); |
| | 1073 | |
| | 1074 | if ((result = ncp_request(server, 0x1A)) != 0) |
| | 1075 | { |
| | 1076 | ncp_unlock_server(server); |
| | 1077 | return result; |
| | 1078 | } |
| | 1079 | ncp_unlock_server(server); |
| | 1080 | return 0; |
| | 1081 | } |
| | 1082 | |
| | 1083 | int |
| | 1084 | ncp_ClearPhysicalRecord(struct ncp_server *server, const char *file_id, |
| | 1085 | __u32 offset, __u32 length) |
| | 1086 | { |
| | 1087 | int result; |
| | 1088 | |
| | 1089 | ncp_init_request(server); |
| | 1090 | ncp_add_byte(server, 0); /* who knows... lanalyzer says that */ |
| | 1091 | ncp_add_mem(server, file_id, 6); |
| | 1092 | ncp_add_be32(server, offset); |
| | 1093 | ncp_add_be32(server, length); |
| | 1094 | |
| | 1095 | if ((result = ncp_request(server, 0x1E)) != 0) |
| | 1096 | { |
| | 1097 | ncp_unlock_server(server); |
| | 1098 | return result; |
| | 1099 | } |
| | 1100 | ncp_unlock_server(server); |
| | 1101 | return 0; |
| | 1102 | } |
| | 1103 | #endif /* CONFIG_NCPFS_IOCTL_LOCKING */ |
| | 1104 | |
| | 1105 | #ifdef CONFIG_NCPFS_NLS |
| | 1106 | /* This are the NLS conversion routines with inspirations and code parts |
| | 1107 | * from the vfat file system and hints from Petr Vandrovec. |
| | 1108 | */ |
| | 1109 | |
| | 1110 | int |
| | 1111 | ncp__io2vol(struct ncp_server *server, unsigned char *vname, unsigned int *vlen, |
| | 1112 | const unsigned char *iname, unsigned int ilen, int cc) |
| | 1113 | { |
| | 1114 | struct nls_table *in = server->nls_io; |
| | 1115 | struct nls_table *out = server->nls_vol; |
| | 1116 | unsigned char *vname_start; |
| | 1117 | unsigned char *vname_end; |
| | 1118 | const unsigned char *iname_end; |
| | 1119 | |
| | 1120 | iname_end = iname + ilen; |
| | 1121 | vname_start = vname; |
| | 1122 | vname_end = vname + *vlen - 1; |
| | 1123 | |
| | 1124 | while (iname < iname_end) { |
| | 1125 | int chl; |
| | 1126 | wchar_t ec; |
| | 1127 | |
| | 1128 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { |
| | 1129 | int k; |
| | 1130 | unicode_t u; |
| | 1131 | |
| | 1132 | k = utf8_to_utf32(iname, iname_end - iname, &u); |
| | 1133 | if (k < 0 || u > MAX_WCHAR_T) |
| | 1134 | return -EINVAL; |
| | 1135 | iname += k; |
| | 1136 | ec = u; |
| | 1137 | } else { |
| | 1138 | if (*iname == NCP_ESC) { |
| | 1139 | int k; |
| | 1140 | |
| | 1141 | if (iname_end - iname < 5) |
| | 1142 | goto nospec; |
| | 1143 | |
| | 1144 | ec = 0; |
| | 1145 | for (k = 1; k < 5; k++) { |
| | 1146 | unsigned char nc; |
| | 1147 | |
| | 1148 | nc = iname[k] - '0'; |
| | 1149 | if (nc >= 10) { |
| | 1150 | nc -= 'A' - '0' - 10; |
| | 1151 | if ((nc < 10) || (nc > 15)) { |
| | 1152 | goto nospec; |
| | 1153 | } |
| | 1154 | } |
| | 1155 | ec = (ec << 4) | nc; |
| | 1156 | } |
| | 1157 | iname += 5; |
| | 1158 | } else { |
| | 1159 | nospec:; |
| | 1160 | if ( (chl = in->char2uni(iname, iname_end - iname, &ec)) < 0) |
| | 1161 | return chl; |
| | 1162 | iname += chl; |
| | 1163 | } |
| | 1164 | } |
| | 1165 | |
| | 1166 | /* unitoupper should be here! */ |
| | 1167 | |
| | 1168 | chl = out->uni2char(ec, vname, vname_end - vname); |
| | 1169 | if (chl < 0) |
| | 1170 | return chl; |
| | 1171 | |
| | 1172 | /* this is wrong... */ |
| | 1173 | if (cc) { |
| | 1174 | int chi; |
| | 1175 | |
| | 1176 | for (chi = 0; chi < chl; chi++){ |
| | 1177 | vname[chi] = ncp_toupper(out, vname[chi]); |
| | 1178 | } |
| | 1179 | } |
| | 1180 | vname += chl; |
| | 1181 | } |
| | 1182 | |
| | 1183 | *vname = 0; |
| | 1184 | *vlen = vname - vname_start; |
| | 1185 | return 0; |
| | 1186 | } |
| | 1187 | |
| | 1188 | int |
| | 1189 | ncp__vol2io(struct ncp_server *server, unsigned char *iname, unsigned int *ilen, |
| | 1190 | const unsigned char *vname, unsigned int vlen, int cc) |
| | 1191 | { |
| | 1192 | struct nls_table *in = server->nls_vol; |
| | 1193 | struct nls_table *out = server->nls_io; |
| | 1194 | const unsigned char *vname_end; |
| | 1195 | unsigned char *iname_start; |
| | 1196 | unsigned char *iname_end; |
| | 1197 | unsigned char *vname_cc; |
| | 1198 | int err; |
| | 1199 | |
| | 1200 | vname_cc = NULL; |
| | 1201 | |
| | 1202 | if (cc) { |
| | 1203 | int i; |
| | 1204 | |
| | 1205 | /* this is wrong! */ |
| | 1206 | vname_cc = kmalloc(vlen, GFP_KERNEL); |
| | 1207 | if (!vname_cc) |
| | 1208 | return -ENOMEM; |
| | 1209 | for (i = 0; i < vlen; i++) |
| | 1210 | vname_cc[i] = ncp_tolower(in, vname[i]); |
| | 1211 | vname = vname_cc; |
| | 1212 | } |
| | 1213 | |
| | 1214 | iname_start = iname; |
| | 1215 | iname_end = iname + *ilen - 1; |
| | 1216 | vname_end = vname + vlen; |
| | 1217 | |
| | 1218 | while (vname < vname_end) { |
| | 1219 | wchar_t ec; |
| | 1220 | int chl; |
| | 1221 | |
| | 1222 | if ( (chl = in->char2uni(vname, vname_end - vname, &ec)) < 0) { |
| | 1223 | err = chl; |
| | 1224 | goto quit; |
| | 1225 | } |
| | 1226 | vname += chl; |
| | 1227 | |
| | 1228 | /* unitolower should be here! */ |
| | 1229 | |
| | 1230 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) { |
| | 1231 | int k; |
| | 1232 | |
| | 1233 | k = utf32_to_utf8(ec, iname, iname_end - iname); |
| | 1234 | if (k < 0) { |
| | 1235 | err = -ENAMETOOLONG; |
| | 1236 | goto quit; |
| | 1237 | } |
| | 1238 | iname += k; |
| | 1239 | } else { |
| | 1240 | if ( (chl = out->uni2char(ec, iname, iname_end - iname)) >= 0) { |
| | 1241 | iname += chl; |
| | 1242 | } else { |
| | 1243 | int k; |
| | 1244 | |
| | 1245 | if (iname_end - iname < 5) { |
| | 1246 | err = -ENAMETOOLONG; |
| | 1247 | goto quit; |
| | 1248 | } |
| | 1249 | *iname = NCP_ESC; |
| | 1250 | for (k = 4; k > 0; k--) { |
| | 1251 | unsigned char v; |
| | 1252 | |
| | 1253 | v = (ec & 0xF) + '0'; |
| | 1254 | if (v > '9') { |
| | 1255 | v += 'A' - '9' - 1; |
| | 1256 | } |
| | 1257 | iname[k] = v; |
| | 1258 | ec >>= 4; |
| | 1259 | } |
| | 1260 | iname += 5; |
| | 1261 | } |
| | 1262 | } |
| | 1263 | } |
| | 1264 | |
| | 1265 | *iname = 0; |
| | 1266 | *ilen = iname - iname_start; |
| | 1267 | err = 0; |
| | 1268 | quit:; |
| | 1269 | if (cc) |
| | 1270 | kfree(vname_cc); |
| | 1271 | return err; |
| | 1272 | } |
| | 1273 | |
| | 1274 | #else |
| | 1275 | |
| | 1276 | int |
| | 1277 | ncp__io2vol(unsigned char *vname, unsigned int *vlen, |
| | 1278 | const unsigned char *iname, unsigned int ilen, int cc) |
| | 1279 | { |
| | 1280 | int i; |
| | 1281 | |
| | 1282 | if (*vlen <= ilen) |
| | 1283 | return -ENAMETOOLONG; |
| | 1284 | |
| | 1285 | if (cc) |
| | 1286 | for (i = 0; i < ilen; i++) { |
| | 1287 | *vname = toupper(*iname); |
| | 1288 | vname++; |
| | 1289 | iname++; |
| | 1290 | } |
| | 1291 | else { |
| | 1292 | memmove(vname, iname, ilen); |
| | 1293 | vname += ilen; |
| | 1294 | } |
| | 1295 | |
| | 1296 | *vlen = ilen; |
| | 1297 | *vname = 0; |
| | 1298 | return 0; |
| | 1299 | } |
| | 1300 | |
| | 1301 | int |
| | 1302 | ncp__vol2io(unsigned char *iname, unsigned int *ilen, |
| | 1303 | const unsigned char *vname, unsigned int vlen, int cc) |
| | 1304 | { |
| | 1305 | int i; |
| | 1306 | |
| | 1307 | if (*ilen <= vlen) |
| | 1308 | return -ENAMETOOLONG; |
| | 1309 | |
| | 1310 | if (cc) |
| | 1311 | for (i = 0; i < vlen; i++) { |
| | 1312 | *iname = tolower(*vname); |
| | 1313 | iname++; |
| | 1314 | vname++; |
| | 1315 | } |
| | 1316 | else { |
| | 1317 | memmove(iname, vname, vlen); |
| | 1318 | iname += vlen; |
| | 1319 | } |
| | 1320 | |
| | 1321 | *ilen = vlen; |
| | 1322 | *iname = 0; |
| | 1323 | return 0; |
| | 1324 | } |
| | 1325 | |
| | 1326 | #endif |
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / blame_incremental