Alexandre Lision | ddd731e | 2014-01-31 11:50:08 -0500 | [diff] [blame] | 1 | // Copyright (C) 2006-2010 David Sugar, Tycho Softworks. |
| 2 | // |
| 3 | // This file is part of GNU uCommon C++. |
| 4 | // |
| 5 | // GNU uCommon C++ is free software: you can redistribute it and/or modify |
| 6 | // it under the terms of the GNU Lesser General Public License as published |
| 7 | // by the Free Software Foundation, either version 3 of the License, or |
| 8 | // (at your option) any later version. |
| 9 | // |
| 10 | // GNU uCommon C++ is distributed in the hope that it will be useful, |
| 11 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | // GNU Lesser General Public License for more details. |
| 14 | // |
| 15 | // You should have received a copy of the GNU Lesser General Public License |
| 16 | // along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>. |
| 17 | |
| 18 | #ifndef _MSC_VER |
| 19 | #include <sys/stat.h> |
| 20 | #endif |
| 21 | |
| 22 | #ifndef _XOPEN_SOURCE |
| 23 | #define _XOPEN_SOURCE 600 |
| 24 | #endif |
| 25 | |
| 26 | #include <ucommon-config.h> |
| 27 | |
| 28 | // broken BSD; XOPEN should not imply _POSIX_C_SOURCE, |
| 29 | // _POSIX_C_SOURCE should not stop __BSD_VISIBLE |
| 30 | |
| 31 | #define u_int unsigned int |
| 32 | #define u_short unsigned short |
| 33 | #define u_long unsigned long |
| 34 | #define u_char unsigned char |
| 35 | |
| 36 | #include <ucommon/export.h> |
| 37 | #include <ucommon/thread.h> |
| 38 | #include <ucommon/fsys.h> |
| 39 | #include <ucommon/string.h> |
| 40 | #include <ucommon/memory.h> |
| 41 | #include <ucommon/shell.h> |
| 42 | |
| 43 | #ifdef HAVE_SYSLOG_H |
| 44 | #include <syslog.h> |
| 45 | #endif |
| 46 | |
| 47 | #ifdef HAVE_LINUX_VERSION_H |
| 48 | #include <linux/version.h> |
| 49 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8) |
| 50 | #ifdef HAVE_POSIX_FADVISE |
| 51 | #undef HAVE_POSIX_FADVISE |
| 52 | #endif |
| 53 | #endif |
| 54 | #endif |
| 55 | |
| 56 | #include <stdio.h> |
| 57 | #include <fcntl.h> |
| 58 | #include <errno.h> |
| 59 | #include <string.h> |
| 60 | #include <ctype.h> |
| 61 | |
| 62 | #ifdef HAVE_POSIX_FADVISE |
| 63 | #ifndef POSIX_FADV_RANDOM |
| 64 | #undef HAVE_POSIX_FADVISE |
| 65 | #endif |
| 66 | #endif |
| 67 | |
| 68 | #ifdef HAVE_DIRENT_H |
| 69 | #include <dirent.h> |
| 70 | #endif |
| 71 | |
| 72 | #ifdef _MSWINDOWS_ |
| 73 | #include <direct.h> |
| 74 | #include <winioctl.h> |
| 75 | #include <io.h> |
| 76 | #endif |
| 77 | |
| 78 | #ifdef HAVE_SYS_INOTIFY_H |
| 79 | #include <sys/inotify.h> |
| 80 | #endif |
| 81 | |
| 82 | #ifdef HAVE_SYS_EVENT_H |
| 83 | #include <sys/event.h> |
| 84 | #endif |
| 85 | |
| 86 | using namespace UCOMMON_NAMESPACE; |
| 87 | |
| 88 | const fsys::offset_t fsys::end = (offset_t)(-1); |
| 89 | |
| 90 | #ifdef _MSWINDOWS_ |
| 91 | |
| 92 | // removed from some sdk versions... |
| 93 | struct LOCAL_REPARSE_DATA_BUFFER |
| 94 | { |
| 95 | DWORD ReparseTag; |
| 96 | WORD ReparseDataLength; |
| 97 | WORD Reserved; |
| 98 | |
| 99 | // IO_REPARSE_TAG_MOUNT_POINT specifics follow |
| 100 | WORD SubstituteNameOffset; |
| 101 | WORD SubstituteNameLength; |
| 102 | WORD PrintNameOffset; |
| 103 | WORD PrintNameLength; |
| 104 | WCHAR PathBuffer[1]; |
| 105 | }; |
| 106 | |
| 107 | int fsys::remapError(void) |
| 108 | { |
| 109 | DWORD err = GetLastError(); |
| 110 | |
| 111 | switch(err) |
| 112 | { |
| 113 | case ERROR_FILE_NOT_FOUND: |
| 114 | case ERROR_PATH_NOT_FOUND: |
| 115 | case ERROR_INVALID_NAME: |
| 116 | case ERROR_BAD_PATHNAME: |
| 117 | return ENOENT; |
| 118 | case ERROR_TOO_MANY_OPEN_FILES: |
| 119 | return EMFILE; |
| 120 | case ERROR_ACCESS_DENIED: |
| 121 | case ERROR_WRITE_PROTECT: |
| 122 | case ERROR_SHARING_VIOLATION: |
| 123 | case ERROR_LOCK_VIOLATION: |
| 124 | return EACCES; |
| 125 | case ERROR_INVALID_HANDLE: |
| 126 | return EBADF; |
| 127 | case ERROR_NOT_ENOUGH_MEMORY: |
| 128 | case ERROR_OUTOFMEMORY: |
| 129 | return ENOMEM; |
| 130 | case ERROR_INVALID_DRIVE: |
| 131 | case ERROR_BAD_UNIT: |
| 132 | case ERROR_BAD_DEVICE: |
| 133 | return ENODEV; |
| 134 | case ERROR_NOT_SAME_DEVICE: |
| 135 | return EXDEV; |
| 136 | case ERROR_NOT_SUPPORTED: |
| 137 | case ERROR_CALL_NOT_IMPLEMENTED: |
| 138 | return ENOSYS; |
| 139 | case ERROR_END_OF_MEDIA: |
| 140 | case ERROR_EOM_OVERFLOW: |
| 141 | case ERROR_HANDLE_DISK_FULL: |
| 142 | case ERROR_DISK_FULL: |
| 143 | return ENOSPC; |
| 144 | case ERROR_BAD_NETPATH: |
| 145 | case ERROR_BAD_NET_NAME: |
| 146 | return EACCES; |
| 147 | case ERROR_FILE_EXISTS: |
| 148 | case ERROR_ALREADY_EXISTS: |
| 149 | return EEXIST; |
| 150 | case ERROR_CANNOT_MAKE: |
| 151 | case ERROR_NOT_OWNER: |
| 152 | return EPERM; |
| 153 | case ERROR_NO_PROC_SLOTS: |
| 154 | return EAGAIN; |
| 155 | case ERROR_BROKEN_PIPE: |
| 156 | case ERROR_NO_DATA: |
| 157 | return EPIPE; |
| 158 | case ERROR_OPEN_FAILED: |
| 159 | return EIO; |
| 160 | case ERROR_NOACCESS: |
| 161 | return EFAULT; |
| 162 | case ERROR_IO_DEVICE: |
| 163 | case ERROR_CRC: |
| 164 | case ERROR_NO_SIGNAL_SENT: |
| 165 | return EIO; |
| 166 | case ERROR_CHILD_NOT_COMPLETE: |
| 167 | case ERROR_SIGNAL_PENDING: |
| 168 | case ERROR_BUSY: |
| 169 | return EBUSY; |
| 170 | case ERROR_DIR_NOT_EMPTY: |
| 171 | return ENOTEMPTY; |
| 172 | case ERROR_DIRECTORY: |
| 173 | return ENOTDIR; |
| 174 | default: |
| 175 | return EINVAL; |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | int dir::create(const char *path, unsigned perms) |
| 180 | { |
| 181 | if(!CreateDirectory(path, NULL)) |
| 182 | return remapError(); |
| 183 | |
| 184 | if(perms & 06) |
| 185 | perms |= 01; |
| 186 | if(perms & 060) |
| 187 | perms |= 010; |
| 188 | if(perms & 0600) |
| 189 | perms |= 0100; |
| 190 | |
| 191 | return mode(path, perms); |
| 192 | } |
| 193 | |
| 194 | fd_t fsys::null(void) |
| 195 | { |
| 196 | SECURITY_ATTRIBUTES sattr; |
| 197 | |
| 198 | sattr.nLength = sizeof(SECURITY_ATTRIBUTES); |
| 199 | sattr.bInheritHandle = TRUE; |
| 200 | sattr.lpSecurityDescriptor = NULL; |
| 201 | |
| 202 | return CreateFile("nul", GENERIC_READ|GENERIC_WRITE, FILE_SHARE_READ|FILE_SHARE_WRITE, &sattr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| 203 | } |
| 204 | |
| 205 | int fsys::pipe(fd_t& input, fd_t& output, size_t size) |
| 206 | { |
| 207 | input = output = NULL; |
| 208 | SECURITY_ATTRIBUTES sattr; |
| 209 | |
| 210 | sattr.nLength = sizeof(SECURITY_ATTRIBUTES); |
| 211 | sattr.bInheritHandle = TRUE; |
| 212 | sattr.lpSecurityDescriptor = NULL; |
| 213 | |
| 214 | if(!CreatePipe(&input, &output, &sattr, size)) |
| 215 | return remapError(); |
| 216 | |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | int fsys::info(const char *path, struct stat *buf) |
| 221 | { |
| 222 | if(_stat(path, (struct _stat *)(buf))) |
| 223 | return remapError(); |
| 224 | return 0; |
| 225 | } |
| 226 | |
| 227 | int fsys::trunc(offset_t offset) |
| 228 | { |
| 229 | if(fsys::seek(offset) != 0) |
| 230 | return remapError(); |
| 231 | |
| 232 | if(SetEndOfFile(fd)) |
| 233 | return 0; |
| 234 | |
| 235 | return remapError(); |
| 236 | } |
| 237 | |
| 238 | int fsys::info(struct stat *buf) |
| 239 | { |
| 240 | int fn = _open_osfhandle((intptr_t)(fd), O_RDONLY); |
| 241 | |
| 242 | int rtn = _fstat(fn, (struct _stat *)(buf)); |
| 243 | _close(fn); |
| 244 | if(rtn) |
| 245 | error = remapError(); |
| 246 | return rtn; |
| 247 | } |
| 248 | |
| 249 | int fsys::prefix(const char *path) |
| 250 | { |
| 251 | if (_chdir(path)) |
| 252 | return remapError(); |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | int fsys::prefix(char *path, size_t len) |
| 257 | { |
| 258 | if (_getcwd(path, len)) |
| 259 | return remapError(); |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | int fsys::mode(const char *path, unsigned value) |
| 264 | { |
| 265 | if(_chmod(path, value)) |
| 266 | return remapError(); |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | bool fsys::is_exists(const char *path) |
| 271 | { |
| 272 | if(_access(path, F_OK)) |
| 273 | return false; |
| 274 | return true; |
| 275 | } |
| 276 | |
| 277 | bool fsys::is_readable(const char *path) |
| 278 | { |
| 279 | if(_access(path, R_OK)) |
| 280 | return false; |
| 281 | return true; |
| 282 | } |
| 283 | |
| 284 | bool fsys::is_writable(const char *path) |
| 285 | { |
| 286 | if(_access(path, W_OK)) |
| 287 | return false; |
| 288 | return true; |
| 289 | } |
| 290 | |
| 291 | bool fsys::is_executable(const char *path) |
| 292 | { |
| 293 | path = strrchr(path, '.'); |
| 294 | |
| 295 | if(!path) |
| 296 | return false; |
| 297 | |
| 298 | if(eq_case(path, ".exe")) |
| 299 | return true; |
| 300 | |
| 301 | if(eq_case(path, ".bat")) |
| 302 | return true; |
| 303 | |
| 304 | if(eq_case(path, ".com")) |
| 305 | return true; |
| 306 | |
| 307 | if(eq_case(path, ".cmd")) |
| 308 | return true; |
| 309 | |
| 310 | if(eq_case(path, ".ps1")) |
| 311 | return true; |
| 312 | |
| 313 | return false; |
| 314 | } |
| 315 | |
| 316 | bool fsys::is_tty(fd_t fd) |
| 317 | { |
| 318 | if(fd == INVALID_HANDLE_VALUE) |
| 319 | return false; |
| 320 | DWORD type = GetFileType(fd); |
| 321 | if(type == FILE_TYPE_CHAR) |
| 322 | return true; |
| 323 | return false; |
| 324 | } |
| 325 | |
| 326 | bool fsys::is_tty(void) |
| 327 | { |
| 328 | error = 0; |
| 329 | if(fd == INVALID_HANDLE_VALUE) |
| 330 | return false; |
| 331 | DWORD type = GetFileType(fd); |
| 332 | if(!type) |
| 333 | error = remapError(); |
| 334 | if(type == FILE_TYPE_CHAR) |
| 335 | return true; |
| 336 | return false; |
| 337 | } |
| 338 | |
| 339 | void dir::close(void) |
| 340 | { |
| 341 | error = 0; |
| 342 | |
| 343 | if(ptr) { |
| 344 | if(::FindClose(fd)) { |
| 345 | delete ptr; |
| 346 | ptr = NULL; |
| 347 | fd = INVALID_HANDLE_VALUE; |
| 348 | } |
| 349 | else |
| 350 | error = remapError(); |
| 351 | } |
| 352 | else |
| 353 | error = EBADF; |
| 354 | } |
| 355 | |
| 356 | int fsys::close(void) |
| 357 | { |
| 358 | error = 0; |
| 359 | |
| 360 | if(fd == INVALID_HANDLE_VALUE) |
| 361 | return EBADF; |
| 362 | |
| 363 | if(::CloseHandle(fd)) |
| 364 | fd = INVALID_HANDLE_VALUE; |
| 365 | else |
| 366 | error = remapError(); |
| 367 | return error; |
| 368 | } |
| 369 | |
| 370 | ssize_t dir::read(char *buf, size_t len) |
| 371 | { |
| 372 | ssize_t rtn = -1; |
| 373 | if(ptr) { |
| 374 | snprintf((char *)buf, len, ptr->cFileName); |
| 375 | rtn = strlen(ptr->cFileName); |
| 376 | if(!FindNextFile(fd, ptr)) |
| 377 | close(); |
| 378 | return rtn; |
| 379 | } |
| 380 | return -1; |
| 381 | } |
| 382 | |
| 383 | ssize_t fsys::read(void *buf, size_t len) |
| 384 | { |
| 385 | ssize_t rtn = -1; |
| 386 | DWORD count; |
| 387 | |
| 388 | if(ReadFile(fd, (LPVOID) buf, (DWORD)len, &count, NULL)) |
| 389 | rtn = count; |
| 390 | else |
| 391 | error = remapError(); |
| 392 | |
| 393 | return rtn; |
| 394 | } |
| 395 | |
| 396 | ssize_t fsys::write(const void *buf, size_t len) |
| 397 | { |
| 398 | ssize_t rtn = -1; |
| 399 | DWORD count; |
| 400 | |
| 401 | if(WriteFile(fd, (LPVOID) buf, (DWORD)len, &count, NULL)) |
| 402 | rtn = count; |
| 403 | else |
| 404 | error = remapError(); |
| 405 | |
| 406 | return rtn; |
| 407 | } |
| 408 | |
| 409 | int fsys::sync(void) |
| 410 | { |
| 411 | return 0; |
| 412 | } |
| 413 | |
| 414 | fd_t fsys::input(const char *path) |
| 415 | { |
| 416 | SECURITY_ATTRIBUTES sattr; |
| 417 | |
| 418 | sattr.nLength = sizeof(SECURITY_ATTRIBUTES); |
| 419 | sattr.bInheritHandle = TRUE; |
| 420 | sattr.lpSecurityDescriptor = NULL; |
| 421 | |
| 422 | return CreateFile(path, GENERIC_READ, FILE_SHARE_READ, &sattr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| 423 | } |
| 424 | |
| 425 | fd_t fsys::output(const char *path) |
| 426 | { |
| 427 | SECURITY_ATTRIBUTES sattr; |
| 428 | |
| 429 | sattr.nLength = sizeof(SECURITY_ATTRIBUTES); |
| 430 | sattr.bInheritHandle = TRUE; |
| 431 | sattr.lpSecurityDescriptor = NULL; |
| 432 | |
| 433 | return CreateFile(path, GENERIC_WRITE, 0, &sattr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
| 434 | } |
| 435 | |
| 436 | fd_t fsys::append(const char *path) |
| 437 | { |
| 438 | SECURITY_ATTRIBUTES sattr; |
| 439 | |
| 440 | sattr.nLength = sizeof(SECURITY_ATTRIBUTES); |
| 441 | sattr.bInheritHandle = TRUE; |
| 442 | sattr.lpSecurityDescriptor = NULL; |
| 443 | |
| 444 | fd_t fd = CreateFile(path, GENERIC_WRITE, 0, &sattr, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
| 445 | |
| 446 | if(fd != INVALID_HANDLE_VALUE) |
| 447 | SetFilePointer(fd, 0, NULL, FILE_END); |
| 448 | |
| 449 | return fd; |
| 450 | } |
| 451 | |
| 452 | void fsys::release(fd_t fd) |
| 453 | { |
| 454 | CloseHandle(fd); |
| 455 | } |
| 456 | |
| 457 | void dir::open(const char *path) |
| 458 | { |
| 459 | close(); |
| 460 | error = 0; |
| 461 | |
| 462 | char tpath[256]; |
| 463 | DWORD attr = GetFileAttributes(path); |
| 464 | |
| 465 | if((attr == (DWORD)~0l) || !(attr & FILE_ATTRIBUTE_DIRECTORY)) { |
| 466 | error = ENOTDIR; |
| 467 | return; |
| 468 | } |
| 469 | |
| 470 | snprintf(tpath, sizeof(tpath), "%s%s", path, "\\*"); |
| 471 | ptr = new WIN32_FIND_DATA; |
| 472 | fd = FindFirstFile(tpath, ptr); |
| 473 | if(fd == INVALID_HANDLE_VALUE) { |
| 474 | delete ptr; |
| 475 | ptr = NULL; |
| 476 | error = remapError(); |
| 477 | } |
| 478 | return; |
| 479 | } |
| 480 | |
| 481 | void fsys::open(const char *path, access_t access) |
| 482 | { |
| 483 | bool append = false; |
| 484 | DWORD amode = 0; |
| 485 | DWORD smode = 0; |
| 486 | DWORD attr = FILE_ATTRIBUTE_NORMAL; |
| 487 | char buf[128]; |
| 488 | |
| 489 | close(); |
| 490 | error = 0; |
| 491 | |
| 492 | if(access == DEVICE) { |
| 493 | #ifdef _MSWINDOWS_ |
| 494 | if(isalpha(path[0]) && path[1] == ':') { |
| 495 | if(!QueryDosDevice(path, buf, sizeof(buf))) { |
| 496 | error = ENODEV; |
| 497 | return; |
| 498 | } |
| 499 | path = buf; |
| 500 | } |
| 501 | #else |
| 502 | if(!strchr(path, '/')) { |
| 503 | if(path[0] == 'S' && isdigit(path[1])) |
| 504 | snprintf(buf, sizeof(buf) "/dev/tty%s", path); |
| 505 | else if(strncmp(path, "USB", 3)) |
| 506 | snprintf(buf, sizeof(buf), "/dev/tty%s", path); |
| 507 | else |
| 508 | snprintf(buf, sizeof(buf), "/dev/%s", path); |
| 509 | |
| 510 | char *cp = strchr(buf, ':'); |
| 511 | if(cp) |
| 512 | *cp = 0; |
| 513 | path = buf; |
| 514 | } |
| 515 | #endif |
| 516 | if(!is_device(buf)) { |
| 517 | error = ENODEV; |
| 518 | return; |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | switch(access) |
| 523 | { |
| 524 | case STREAM: |
| 525 | #ifdef FILE_FLAG_SEQUENTIAL_SCAN |
| 526 | attr |= FILE_FLAG_SEQUENTIAL_SCAN; |
| 527 | #endif |
| 528 | case RDONLY: |
| 529 | amode = GENERIC_READ; |
| 530 | smode = FILE_SHARE_READ; |
| 531 | break; |
| 532 | case WRONLY: |
| 533 | amode = GENERIC_WRITE; |
| 534 | break; |
| 535 | case DEVICE: |
| 536 | smode = FILE_SHARE_READ; |
| 537 | attr |= FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING; |
| 538 | case EXCLUSIVE: |
| 539 | amode = GENERIC_READ | GENERIC_WRITE; |
| 540 | break; |
| 541 | case RANDOM: |
| 542 | attr |= FILE_FLAG_RANDOM_ACCESS; |
| 543 | case REWRITE: |
| 544 | amode = GENERIC_READ | GENERIC_WRITE; |
| 545 | smode = FILE_SHARE_READ; |
| 546 | break; |
| 547 | case APPEND: |
| 548 | amode = GENERIC_WRITE; |
| 549 | append = true; |
| 550 | break; |
| 551 | case SHARED: |
| 552 | amode = GENERIC_READ | GENERIC_WRITE; |
| 553 | smode = FILE_SHARE_READ | FILE_SHARE_WRITE; |
| 554 | break; |
| 555 | } |
| 556 | |
| 557 | fd = CreateFile(path, amode, smode, NULL, OPEN_EXISTING, attr, NULL); |
| 558 | if(fd != INVALID_HANDLE_VALUE && append) |
| 559 | seek(end); |
| 560 | else if(fd == INVALID_HANDLE_VALUE) |
| 561 | error = remapError(); |
| 562 | } |
| 563 | |
| 564 | void fsys::open(const char *path, unsigned fmode, access_t access) |
| 565 | { |
| 566 | bool append = false; |
| 567 | DWORD amode = 0; |
| 568 | DWORD cmode = 0; |
| 569 | DWORD smode = 0; |
| 570 | DWORD attr = FILE_ATTRIBUTE_NORMAL; |
| 571 | |
| 572 | fmode &= 0666; |
| 573 | |
| 574 | close(); |
| 575 | error = 0; |
| 576 | |
| 577 | const char *cp = strrchr(path, '\\'); |
| 578 | const char *cp2 = strrchr(path, '/'); |
| 579 | if(cp2 > cp) |
| 580 | cp = cp2; |
| 581 | |
| 582 | if(!cp) |
| 583 | cp = path; |
| 584 | else |
| 585 | ++cp; |
| 586 | |
| 587 | if(*cp == '.') |
| 588 | attr = FILE_ATTRIBUTE_HIDDEN; |
| 589 | |
| 590 | switch(access) |
| 591 | { |
| 592 | case DEVICE: |
| 593 | error = ENOSYS; |
| 594 | return; |
| 595 | |
| 596 | case RDONLY: |
| 597 | amode = GENERIC_READ; |
| 598 | cmode = OPEN_ALWAYS; |
| 599 | smode = FILE_SHARE_READ; |
| 600 | break; |
| 601 | case STREAM: |
| 602 | case WRONLY: |
| 603 | amode = GENERIC_WRITE; |
| 604 | cmode = CREATE_ALWAYS; |
| 605 | break; |
| 606 | case EXCLUSIVE: |
| 607 | amode = GENERIC_READ | GENERIC_WRITE; |
| 608 | cmode = OPEN_ALWAYS; |
| 609 | break; |
| 610 | case RANDOM: |
| 611 | attr |= FILE_FLAG_RANDOM_ACCESS; |
| 612 | case REWRITE: |
| 613 | amode = GENERIC_READ | GENERIC_WRITE; |
| 614 | cmode = OPEN_ALWAYS; |
| 615 | smode = FILE_SHARE_READ; |
| 616 | break; |
| 617 | case APPEND: |
| 618 | amode = GENERIC_WRITE; |
| 619 | cmode = OPEN_ALWAYS; |
| 620 | append = true; |
| 621 | break; |
| 622 | case SHARED: |
| 623 | amode = GENERIC_READ | GENERIC_WRITE; |
| 624 | cmode = OPEN_ALWAYS; |
| 625 | smode = FILE_SHARE_READ | FILE_SHARE_WRITE; |
| 626 | break; |
| 627 | } |
| 628 | fd = CreateFile(path, amode, smode, NULL, cmode, attr, NULL); |
| 629 | if(fd != INVALID_HANDLE_VALUE && append) |
| 630 | seek(end); |
| 631 | else if(fd == INVALID_HANDLE_VALUE) |
| 632 | error = remapError(); |
| 633 | if(fd != INVALID_HANDLE_VALUE) |
| 634 | mode(path, fmode); |
| 635 | } |
| 636 | |
| 637 | fsys::fsys(const fsys& copy) |
| 638 | { |
| 639 | error = 0; |
| 640 | fd = INVALID_HANDLE_VALUE; |
| 641 | |
| 642 | if(copy.fd == INVALID_HANDLE_VALUE) |
| 643 | return; |
| 644 | |
| 645 | HANDLE pHandle = GetCurrentProcess(); |
| 646 | if(!DuplicateHandle(pHandle, copy.fd, pHandle, &fd, 0, FALSE, DUPLICATE_SAME_ACCESS)) { |
| 647 | fd = INVALID_HANDLE_VALUE; |
| 648 | error = remapError(); |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | int fsys::inherit(fd_t& from, bool enable) |
| 653 | { |
| 654 | HANDLE pHandle = GetCurrentProcess(); |
| 655 | |
| 656 | if(!enable) { |
| 657 | if(!SetHandleInformation(from, HANDLE_FLAG_INHERIT, 0)) |
| 658 | return remapError(); |
| 659 | return 0; |
| 660 | } |
| 661 | |
| 662 | fd_t fd; |
| 663 | if(DuplicateHandle(pHandle, from, pHandle, &fd, 0, TRUE, DUPLICATE_SAME_ACCESS)) { |
| 664 | release(from); |
| 665 | from = fd; |
| 666 | return 0; |
| 667 | } |
| 668 | |
| 669 | return remapError(); |
| 670 | } |
| 671 | |
| 672 | void fsys::operator=(fd_t from) |
| 673 | { |
| 674 | HANDLE pHandle = GetCurrentProcess(); |
| 675 | |
| 676 | if(fd != INVALID_HANDLE_VALUE) { |
| 677 | if(!CloseHandle(fd)) { |
| 678 | error = remapError(); |
| 679 | return; |
| 680 | } |
| 681 | } |
| 682 | if(DuplicateHandle(pHandle, from, pHandle, &fd, 0, FALSE, DUPLICATE_SAME_ACCESS)) |
| 683 | error = 0; |
| 684 | else { |
| 685 | fd = INVALID_HANDLE_VALUE; |
| 686 | error = remapError(); |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | void fsys::operator=(const fsys& from) |
| 691 | { |
| 692 | HANDLE pHandle = GetCurrentProcess(); |
| 693 | |
| 694 | if(fd != INVALID_HANDLE_VALUE) { |
| 695 | if(!CloseHandle(fd)) { |
| 696 | error = remapError(); |
| 697 | return; |
| 698 | } |
| 699 | } |
| 700 | if(DuplicateHandle(pHandle, from.fd, pHandle, &fd, 0, FALSE, DUPLICATE_SAME_ACCESS)) |
| 701 | error = 0; |
| 702 | else { |
| 703 | fd = INVALID_HANDLE_VALUE; |
| 704 | error = remapError(); |
| 705 | } |
| 706 | } |
| 707 | |
| 708 | int fsys::drop(offset_t size) |
| 709 | { |
| 710 | error = ENOSYS; |
| 711 | return ENOSYS; |
| 712 | } |
| 713 | |
| 714 | int fsys::seek(offset_t pos) |
| 715 | { |
| 716 | DWORD rpos = pos; |
| 717 | int mode = FILE_BEGIN; |
| 718 | |
| 719 | if(rpos == (DWORD)end) { |
| 720 | rpos = 0; |
| 721 | mode = FILE_END; |
| 722 | } |
| 723 | if(SetFilePointer(fd, rpos, NULL, mode) == INVALID_SET_FILE_POINTER) { |
| 724 | error = remapError(); |
| 725 | return error; |
| 726 | } |
| 727 | return 0; |
| 728 | } |
| 729 | |
| 730 | #else |
| 731 | |
| 732 | ssize_t dir::read(char *buf, size_t len) |
| 733 | { |
| 734 | if(ptr) { |
| 735 | dirent *entry = ::readdir((DIR *)ptr); |
| 736 | |
| 737 | if(!entry) |
| 738 | return 0; |
| 739 | |
| 740 | String::set((char *)buf, len, entry->d_name); |
| 741 | return strlen(entry->d_name); |
| 742 | } |
| 743 | return -1; |
| 744 | } |
| 745 | |
| 746 | ssize_t fsys::read(void *buf, size_t len) |
| 747 | { |
| 748 | #ifdef __PTH__ |
| 749 | int rtn = ::pth_read(fd, buf, len); |
| 750 | #else |
| 751 | int rtn = ::read(fd, buf, len); |
| 752 | #endif |
| 753 | |
| 754 | if(rtn < 0) |
| 755 | error = remapError(); |
| 756 | return rtn; |
| 757 | } |
| 758 | |
| 759 | int fsys::sync(void) |
| 760 | { |
| 761 | int rtn = ::fsync(fd); |
| 762 | if(rtn < 0) |
| 763 | error = remapError(); |
| 764 | else |
| 765 | return 0; |
| 766 | return error; |
| 767 | } |
| 768 | |
| 769 | ssize_t fsys::write(const void *buf, size_t len) |
| 770 | { |
| 771 | #ifdef __PTH__ |
| 772 | int rtn = pth_write(fd, buf, len); |
| 773 | #else |
| 774 | int rtn = ::write(fd, buf, len); |
| 775 | #endif |
| 776 | |
| 777 | if(rtn < 0) |
| 778 | error = remapError(); |
| 779 | return rtn; |
| 780 | } |
| 781 | |
| 782 | fd_t fsys::null(void) |
| 783 | { |
| 784 | return ::open("/dev/null", O_RDWR); |
| 785 | } |
| 786 | |
| 787 | int fsys::pipe(fd_t& input, fd_t& output, size_t size) |
| 788 | { |
| 789 | input = output = -1; |
| 790 | int pfd[2]; |
| 791 | if(::pipe(pfd)) |
| 792 | return remapError(); |
| 793 | input = pfd[0]; |
| 794 | output = pfd[1]; |
| 795 | return 0; |
| 796 | } |
| 797 | |
| 798 | bool fsys::is_tty(fd_t fd) |
| 799 | { |
| 800 | if(isatty(fd)) |
| 801 | return true; |
| 802 | return false; |
| 803 | } |
| 804 | |
| 805 | bool fsys::is_tty(void) |
| 806 | { |
| 807 | if(isatty(fd)) |
| 808 | return true; |
| 809 | return false; |
| 810 | } |
| 811 | |
| 812 | void dir::close(void) |
| 813 | { |
| 814 | error = 0; |
| 815 | if(ptr) { |
| 816 | if(::closedir((DIR *)ptr)) |
| 817 | error = remapError(); |
| 818 | ptr = NULL; |
| 819 | } |
| 820 | else |
| 821 | error = EBADF; |
| 822 | } |
| 823 | |
| 824 | int fsys::close(void) |
| 825 | { |
| 826 | error = 0; |
| 827 | if(fd != INVALID_HANDLE_VALUE) { |
| 828 | if(::close(fd) == 0) |
| 829 | fd = INVALID_HANDLE_VALUE; |
| 830 | else |
| 831 | error = remapError(); |
| 832 | } |
| 833 | else |
| 834 | return EBADF; // not opened, but state still error free |
| 835 | return error; |
| 836 | } |
| 837 | |
| 838 | fd_t fsys::input(const char *path) |
| 839 | { |
| 840 | return ::open(path, O_RDONLY); |
| 841 | } |
| 842 | |
| 843 | fd_t fsys::output(const char *path) |
| 844 | { |
| 845 | return ::open(path, O_WRONLY | O_CREAT | O_TRUNC, EVERYONE); |
| 846 | } |
| 847 | |
| 848 | fd_t fsys::append(const char *path) |
| 849 | { |
| 850 | return ::open(path, O_WRONLY | O_CREAT | O_APPEND, EVERYONE); |
| 851 | } |
| 852 | |
| 853 | void fsys::release(fd_t fd) |
| 854 | { |
| 855 | ::close(fd); |
| 856 | } |
| 857 | |
| 858 | void fsys::open(const char *path, unsigned fmode, access_t access) |
| 859 | { |
| 860 | unsigned flags = 0; |
| 861 | |
| 862 | close(); |
| 863 | error = 0; |
| 864 | |
| 865 | switch(access) |
| 866 | { |
| 867 | case DEVICE: |
| 868 | error = ENOSYS; |
| 869 | return; |
| 870 | |
| 871 | case RDONLY: |
| 872 | flags = O_RDONLY | O_CREAT; |
| 873 | break; |
| 874 | case STREAM: |
| 875 | case WRONLY: |
| 876 | flags = O_WRONLY | O_CREAT | O_TRUNC; |
| 877 | break; |
| 878 | case RANDOM: |
| 879 | case SHARED: |
| 880 | case REWRITE: |
| 881 | case EXCLUSIVE: |
| 882 | flags = O_RDWR | O_CREAT; |
| 883 | break; |
| 884 | case APPEND: |
| 885 | flags = O_RDWR | O_APPEND | O_CREAT; |
| 886 | break; |
| 887 | } |
| 888 | fd = ::open(path, flags, fmode); |
| 889 | if(fd == INVALID_HANDLE_VALUE) |
| 890 | error = remapError(); |
| 891 | #ifdef HAVE_POSIX_FADVISE |
| 892 | else { |
| 893 | if(access == RANDOM) |
| 894 | posix_fadvise(fd, (off_t)0, (off_t)0, POSIX_FADV_RANDOM); |
| 895 | } |
| 896 | #endif |
| 897 | } |
| 898 | |
| 899 | int dir::create(const char *path, unsigned perms) |
| 900 | { |
| 901 | if(perms & 06) |
| 902 | perms |= 01; |
| 903 | if(perms & 060) |
| 904 | perms |= 010; |
| 905 | if(perms & 0600) |
| 906 | perms |= 0100; |
| 907 | |
| 908 | if(::mkdir(path, perms)) |
| 909 | return remapError(); |
| 910 | return 0; |
| 911 | } |
| 912 | |
| 913 | void dir::open(const char *path) |
| 914 | { |
| 915 | close(); |
| 916 | error = 0; |
| 917 | |
| 918 | ptr = opendir(path); |
| 919 | if(!ptr) |
| 920 | error = remapError(); |
| 921 | } |
| 922 | |
| 923 | void fsys::open(const char *path, access_t access) |
| 924 | { |
| 925 | unsigned flags = 0; |
| 926 | |
| 927 | close(); |
| 928 | error = 0; |
| 929 | |
| 930 | switch(access) |
| 931 | { |
| 932 | case STREAM: |
| 933 | #if defined(O_STREAMING) |
| 934 | flags = O_RDONLY | O_STREAMING; |
| 935 | break; |
| 936 | #endif |
| 937 | case RDONLY: |
| 938 | flags = O_RDONLY; |
| 939 | break; |
| 940 | case WRONLY: |
| 941 | flags = O_WRONLY; |
| 942 | break; |
| 943 | case EXCLUSIVE: |
| 944 | case RANDOM: |
| 945 | case SHARED: |
| 946 | case REWRITE: |
| 947 | case DEVICE: |
| 948 | flags = O_RDWR | O_NONBLOCK; |
| 949 | break; |
| 950 | case APPEND: |
| 951 | flags = O_RDWR | O_APPEND; |
| 952 | break; |
| 953 | } |
| 954 | fd = ::open(path, flags); |
| 955 | if(fd == INVALID_HANDLE_VALUE) { |
| 956 | error = remapError(); |
| 957 | return; |
| 958 | } |
| 959 | #ifdef HAVE_POSIX_FADVISE |
| 960 | // Linux kernel bug prevents use of POSIX_FADV_NOREUSE in streaming... |
| 961 | if(access == STREAM) |
| 962 | posix_fadvise(fd, (off_t)0, (off_t)0, POSIX_FADV_SEQUENTIAL); |
| 963 | else if(access == RANDOM) |
| 964 | posix_fadvise(fd, (off_t)0, (off_t)0, POSIX_FADV_RANDOM); |
| 965 | #endif |
| 966 | if(access == DEVICE) { |
| 967 | flags = fcntl(fd, F_GETFL); |
| 968 | flags &= ~O_NONBLOCK; |
| 969 | fcntl(fd, F_SETFL, flags); |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | int fsys::info(const char *path, struct stat *ino) |
| 974 | { |
| 975 | if(::stat(path, ino)) |
| 976 | return remapError(); |
| 977 | return 0; |
| 978 | } |
| 979 | |
| 980 | #ifdef HAVE_FTRUNCATE |
| 981 | int fsys::trunc(offset_t offset) |
| 982 | { |
| 983 | if(fsys::seek(offset) != 0) |
| 984 | return remapError(); |
| 985 | |
| 986 | if(::ftruncate(fd, offset) == 0) |
| 987 | return 0; |
| 988 | return remapError(); |
| 989 | } |
| 990 | #else |
| 991 | int fsys::trunc(offset_t offset) |
| 992 | { |
| 993 | if(fsys::seek(offset) != 0) |
| 994 | return remapError(); |
| 995 | |
| 996 | return ENOSYS; |
| 997 | } |
| 998 | #endif |
| 999 | |
| 1000 | int fsys::info(struct stat *ino) |
| 1001 | { |
| 1002 | if(::fstat(fd, ino)) { |
| 1003 | error = remapError(); |
| 1004 | return error; |
| 1005 | } |
| 1006 | return 0; |
| 1007 | } |
| 1008 | |
| 1009 | int fsys::prefix(const char *path) |
| 1010 | { |
| 1011 | if(::chdir(path)) |
| 1012 | return remapError(); |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | int fsys::prefix(char *path, size_t len) |
| 1017 | { |
| 1018 | if(::getcwd(path, len)) |
| 1019 | return remapError(); |
| 1020 | return 0; |
| 1021 | } |
| 1022 | |
| 1023 | int fsys::mode(const char *path, unsigned value) |
| 1024 | { |
| 1025 | if(::chmod(path, value)) |
| 1026 | return remapError(); |
| 1027 | return 0; |
| 1028 | } |
| 1029 | |
| 1030 | bool fsys::is_exists(const char *path) |
| 1031 | { |
| 1032 | if(::access(path, F_OK)) |
| 1033 | return false; |
| 1034 | |
| 1035 | return true; |
| 1036 | } |
| 1037 | |
| 1038 | bool fsys::is_readable(const char *path) |
| 1039 | { |
| 1040 | if(::access(path, R_OK)) |
| 1041 | return false; |
| 1042 | |
| 1043 | return true; |
| 1044 | } |
| 1045 | |
| 1046 | bool fsys::is_writable(const char *path) |
| 1047 | { |
| 1048 | if(::access(path, W_OK)) |
| 1049 | return false; |
| 1050 | |
| 1051 | return true; |
| 1052 | } |
| 1053 | |
| 1054 | bool fsys::is_executable(const char *path) |
| 1055 | { |
| 1056 | if(is_dir(path)) |
| 1057 | return false; |
| 1058 | |
| 1059 | if(::access(path, X_OK)) |
| 1060 | return false; |
| 1061 | |
| 1062 | return true; |
| 1063 | } |
| 1064 | |
| 1065 | fsys::fsys(const fsys& copy) |
| 1066 | { |
| 1067 | fd = INVALID_HANDLE_VALUE; |
| 1068 | error = 0; |
| 1069 | |
| 1070 | if(copy.fd != INVALID_HANDLE_VALUE) { |
| 1071 | fd = ::dup(copy.fd); |
| 1072 | } |
| 1073 | else |
| 1074 | fd = INVALID_HANDLE_VALUE; |
| 1075 | } |
| 1076 | |
| 1077 | int fsys::inherit(fd_t& fd, bool enable) |
| 1078 | { |
| 1079 | unsigned long flags; |
| 1080 | if(fd > -1) { |
| 1081 | flags = fcntl(fd, F_GETFL); |
| 1082 | if(enable) |
| 1083 | flags &= ~FD_CLOEXEC; |
| 1084 | else |
| 1085 | flags |= FD_CLOEXEC; |
| 1086 | if(fcntl(fd, F_SETFL, flags)) |
| 1087 | return remapError(); |
| 1088 | } |
| 1089 | return 0; |
| 1090 | } |
| 1091 | |
| 1092 | void fsys::operator=(fd_t from) |
| 1093 | { |
| 1094 | close(); |
| 1095 | if(fd == INVALID_HANDLE_VALUE && from != INVALID_HANDLE_VALUE) { |
| 1096 | fd = ::dup(from); |
| 1097 | if(fd == INVALID_HANDLE_VALUE) |
| 1098 | error = remapError(); |
| 1099 | } |
| 1100 | } |
| 1101 | |
| 1102 | void fsys::operator=(const fsys& from) |
| 1103 | { |
| 1104 | close(); |
| 1105 | if(fd == INVALID_HANDLE_VALUE && from.fd != INVALID_HANDLE_VALUE) { |
| 1106 | fd = ::dup(from.fd); |
| 1107 | if(fd == INVALID_HANDLE_VALUE) |
| 1108 | error = remapError(); |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | int fsys::drop(offset_t size) |
| 1113 | { |
| 1114 | #ifdef HAVE_POSIX_FADVISE |
| 1115 | if(posix_fadvise(fd, (off_t)0, size, POSIX_FADV_DONTNEED)) { |
| 1116 | error = remapError(); |
| 1117 | return error; |
| 1118 | } |
| 1119 | return 0; |
| 1120 | #else |
| 1121 | error = ENOSYS; |
| 1122 | return ENOSYS; |
| 1123 | #endif |
| 1124 | } |
| 1125 | |
| 1126 | int fsys::seek(offset_t pos) |
| 1127 | { |
| 1128 | unsigned long rpos = pos; |
| 1129 | int mode = SEEK_SET; |
| 1130 | |
| 1131 | if(rpos == (unsigned long)end) { |
| 1132 | rpos = 0; |
| 1133 | mode = SEEK_END; |
| 1134 | } |
| 1135 | if(lseek(fd, rpos, mode) == ~0l) { |
| 1136 | error = remapError(); |
| 1137 | return error; |
| 1138 | } |
| 1139 | return 0; |
| 1140 | } |
| 1141 | |
| 1142 | #endif |
| 1143 | |
| 1144 | dso::dso() |
| 1145 | { |
| 1146 | ptr = 0; |
| 1147 | error = 0; |
| 1148 | } |
| 1149 | |
| 1150 | dso::dso(const char *path) |
| 1151 | { |
| 1152 | ptr = 0; |
| 1153 | error = 0; |
| 1154 | map(path); |
| 1155 | } |
| 1156 | |
| 1157 | dso::~dso() |
| 1158 | { |
| 1159 | release(); |
| 1160 | } |
| 1161 | |
| 1162 | dir::dir() : |
| 1163 | fsys() |
| 1164 | { |
| 1165 | ptr = NULL; |
| 1166 | } |
| 1167 | |
| 1168 | dir::~dir() |
| 1169 | { |
| 1170 | close(); |
| 1171 | } |
| 1172 | |
| 1173 | fsys::fsys() |
| 1174 | { |
| 1175 | fd = INVALID_HANDLE_VALUE; |
| 1176 | error = 0; |
| 1177 | } |
| 1178 | |
| 1179 | dir::dir(const char *path) : |
| 1180 | fsys() |
| 1181 | { |
| 1182 | ptr = NULL; |
| 1183 | open(path); |
| 1184 | } |
| 1185 | |
| 1186 | fsys::fsys(const char *path, access_t access) |
| 1187 | { |
| 1188 | fd = INVALID_HANDLE_VALUE; |
| 1189 | open(path, access); |
| 1190 | } |
| 1191 | |
| 1192 | fsys::fsys(const char *path, unsigned fmode, access_t access) |
| 1193 | { |
| 1194 | fd = INVALID_HANDLE_VALUE; |
| 1195 | open(path, fmode, access); |
| 1196 | } |
| 1197 | |
| 1198 | fsys::~fsys() |
| 1199 | { |
| 1200 | close(); |
| 1201 | } |
| 1202 | |
| 1203 | void fsys::operator*=(fd_t& from) |
| 1204 | { |
| 1205 | if(fd != INVALID_HANDLE_VALUE) |
| 1206 | close(); |
| 1207 | fd = from; |
| 1208 | from = INVALID_HANDLE_VALUE; |
| 1209 | } |
| 1210 | |
| 1211 | int fsys::linkinfo(const char *path, char *buffer, size_t size) |
| 1212 | { |
| 1213 | #if defined(_MSWINDOWS_) |
| 1214 | HANDLE h; |
| 1215 | char reparse[MAXIMUM_REPARSE_DATA_BUFFER_SIZE]; |
| 1216 | DWORD rsize; |
| 1217 | |
| 1218 | if(!fsys::is_link(path)) |
| 1219 | return EINVAL; |
| 1220 | |
| 1221 | h = CreateFile(path, GENERIC_READ, 0, 0, OPEN_EXISTING, |
| 1222 | FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, 0); |
| 1223 | |
| 1224 | if(!h || h == INVALID_HANDLE_VALUE) |
| 1225 | return EINVAL; |
| 1226 | |
| 1227 | memset(reparse, 0, sizeof(reparse)); |
| 1228 | LOCAL_REPARSE_DATA_BUFFER *rb = (LOCAL_REPARSE_DATA_BUFFER*)&reparse; |
| 1229 | |
| 1230 | if(!DeviceIoControl(h, FSCTL_GET_REPARSE_POINT, NULL, 0, (LPVOID *)rb, MAXIMUM_REPARSE_DATA_BUFFER_SIZE, &rsize, 0)) { |
| 1231 | CloseHandle(h); |
| 1232 | return remapError(); |
| 1233 | } |
| 1234 | |
| 1235 | #ifdef UNICODE |
| 1236 | String::set(buffer, size, rb.PathBuffer); |
| 1237 | #else |
| 1238 | WideCharToMultiByte(CP_THREAD_ACP, 0, rb->PathBuffer, rb->SubstituteNameLength / sizeof(WCHAR) + 1, buffer, size, "", FALSE); |
| 1239 | #endif |
| 1240 | CloseHandle(h); |
| 1241 | return 0; |
| 1242 | #elif defined(HAVE_READLINK) |
| 1243 | if(::readlink(path, buffer, size)) |
| 1244 | return remapError(); |
| 1245 | return 0; |
| 1246 | #else |
| 1247 | return EINVAL; |
| 1248 | #endif |
| 1249 | } |
| 1250 | |
| 1251 | int fsys::hardlink(const char *path, const char *target) |
| 1252 | { |
| 1253 | #ifdef _MSWINDOWS_ |
| 1254 | if(!CreateHardLink(target, path, NULL)) |
| 1255 | return remapError(); |
| 1256 | return 0; |
| 1257 | #else |
| 1258 | if(::link(path, target)) |
| 1259 | return remapError(); |
| 1260 | return 0; |
| 1261 | #endif |
| 1262 | } |
| 1263 | |
| 1264 | int fsys::link(const char *path, const char *target) |
| 1265 | { |
| 1266 | #if defined(_MSWINDOWS_) |
| 1267 | TCHAR dest[512]; |
| 1268 | HANDLE h; |
| 1269 | char reparse[MAXIMUM_REPARSE_DATA_BUFFER_SIZE]; |
| 1270 | char *part; |
| 1271 | DWORD size; |
| 1272 | WORD len; |
| 1273 | |
| 1274 | lstrcpy(dest, "\\??\\"); |
| 1275 | if(!GetFullPathName(path, sizeof(dest) - (4 * sizeof(TCHAR)), &dest[4], &part) || GetFileAttributes(&dest[4]) == INVALID_FILE_ATTRIBUTES) |
| 1276 | return remapError(); |
| 1277 | |
| 1278 | memset(reparse, 0, sizeof(reparse)); |
| 1279 | LOCAL_REPARSE_DATA_BUFFER *rb = (LOCAL_REPARSE_DATA_BUFFER*)&reparse; |
| 1280 | |
| 1281 | if(!MultiByteToWideChar(CP_THREAD_ACP, MB_PRECOMPOSED, dest, lstrlenA(dest) + 1, rb->PathBuffer, lstrlenA(dest) + 1)) |
| 1282 | return remapError(); |
| 1283 | |
| 1284 | len = lstrlenW(rb->PathBuffer) * 2; |
| 1285 | rb->ReparseTag = IO_REPARSE_TAG_MOUNT_POINT; |
| 1286 | rb->ReparseDataLength = len + 12; |
| 1287 | rb->SubstituteNameLength = len; |
| 1288 | rb->PrintNameOffset = len + 2; |
| 1289 | h = CreateFile(target, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, |
| 1290 | FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, 0); |
| 1291 | if(!h || h == INVALID_HANDLE_VALUE) |
| 1292 | return hardlink(path, target); |
| 1293 | if(!DeviceIoControl(h, FSCTL_SET_REPARSE_POINT, (LPVOID)rb, rb->ReparseDataLength + FIELD_OFFSET(LOCAL_REPARSE_DATA_BUFFER, SubstituteNameOffset), NULL, 0, &size, 0)) { |
| 1294 | CloseHandle(h); |
| 1295 | return hardlink(path, target); |
| 1296 | } |
| 1297 | CloseHandle(h); |
| 1298 | return 0; |
| 1299 | #elif defined(HAVE_SYMLINK) |
| 1300 | if(::symlink(path, target)) |
| 1301 | return remapError(); |
| 1302 | return 0; |
| 1303 | #else |
| 1304 | if(::link(path, target)) |
| 1305 | return remapError(); |
| 1306 | return 0; |
| 1307 | #endif |
| 1308 | } |
| 1309 | |
| 1310 | int fsys::unlink(const char *path) |
| 1311 | { |
| 1312 | #ifdef _MSWINDOWS_ |
| 1313 | HANDLE h = INVALID_HANDLE_VALUE; |
| 1314 | if(is_link(path)) |
| 1315 | h = CreateFile(path, GENERIC_READ | GENERIC_WRITE, 0, 0, OPEN_EXISTING, |
| 1316 | FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OPEN_REPARSE_POINT, 0); |
| 1317 | if(!h || h != INVALID_HANDLE_VALUE) { |
| 1318 | REPARSE_GUID_DATA_BUFFER rb; |
| 1319 | memset(&rb, 0, sizeof(rb)); |
| 1320 | DWORD size; |
| 1321 | rb.ReparseTag = IO_REPARSE_TAG_MOUNT_POINT; |
| 1322 | if(!DeviceIoControl(h, FSCTL_DELETE_REPARSE_POINT, &rb, |
| 1323 | REPARSE_GUID_DATA_BUFFER_HEADER_SIZE, NULL, 0, &size, 0)) { |
| 1324 | CloseHandle(h); |
| 1325 | return remapError(); |
| 1326 | } |
| 1327 | CloseHandle(h); |
| 1328 | ::remove(path); |
| 1329 | return 0; |
| 1330 | } |
| 1331 | #endif |
| 1332 | if(::remove(path)) |
| 1333 | return remapError(); |
| 1334 | return 0; |
| 1335 | } |
| 1336 | |
| 1337 | int fsys::erase(const char *path) |
| 1338 | { |
| 1339 | if(is_device(path)) |
| 1340 | return ENOSYS; |
| 1341 | |
| 1342 | if(::remove(path)) |
| 1343 | return remapError(); |
| 1344 | return 0; |
| 1345 | } |
| 1346 | |
| 1347 | int dir::remove(const char *path) |
| 1348 | { |
| 1349 | if(is_device(path)) |
| 1350 | return ENOSYS; |
| 1351 | |
| 1352 | #ifdef _MSWINDOWS_ |
| 1353 | if(RemoveDirectory(path)) |
| 1354 | return 0; |
| 1355 | int error = remapError(); |
| 1356 | if(error == ENOTEMPTY) |
| 1357 | return ENOTEMPTY; |
| 1358 | #else |
| 1359 | if(!::rmdir(path)) |
| 1360 | return 0; |
| 1361 | if(errno != ENOTDIR) |
| 1362 | return errno; |
| 1363 | #endif |
| 1364 | |
| 1365 | if(::remove(path)) |
| 1366 | return remapError(); |
| 1367 | return 0; |
| 1368 | } |
| 1369 | |
| 1370 | int fsys::copy(const char *oldpath, const char *newpath, size_t size) |
| 1371 | { |
| 1372 | int result = 0; |
| 1373 | char *buffer = new char[size]; |
| 1374 | fsys src, dest; |
| 1375 | ssize_t count = size; |
| 1376 | |
| 1377 | if(!buffer) { |
| 1378 | result = ENOMEM; |
| 1379 | goto end; |
| 1380 | } |
| 1381 | |
| 1382 | remove(newpath); |
| 1383 | |
| 1384 | src.open(oldpath, fsys::STREAM); |
| 1385 | if(!is(src)) |
| 1386 | goto end; |
| 1387 | |
| 1388 | dest.open(newpath, GROUP_PUBLIC, fsys::STREAM); |
| 1389 | if(!is(dest)) |
| 1390 | goto end; |
| 1391 | |
| 1392 | while(count > 0) { |
| 1393 | count = src.read(buffer, size); |
| 1394 | if(count < 0) { |
| 1395 | result = src.err(); |
| 1396 | goto end; |
| 1397 | } |
| 1398 | if(count > 0) |
| 1399 | count = dest.write(buffer, size); |
| 1400 | if(count < 0) { |
| 1401 | result = dest.err(); |
| 1402 | goto end; |
| 1403 | } |
| 1404 | } |
| 1405 | |
| 1406 | end: |
| 1407 | if(is(src)) |
| 1408 | src.close(); |
| 1409 | |
| 1410 | if(is(dest)) |
| 1411 | dest.close(); |
| 1412 | |
| 1413 | if(buffer) |
| 1414 | delete[] buffer; |
| 1415 | |
| 1416 | if(result != 0) |
| 1417 | remove(newpath); |
| 1418 | |
| 1419 | return result; |
| 1420 | } |
| 1421 | |
| 1422 | int fsys::rename(const char *oldpath, const char *newpath) |
| 1423 | { |
| 1424 | if(::rename(oldpath, newpath)) |
| 1425 | return remapError(); |
| 1426 | return 0; |
| 1427 | } |
| 1428 | |
| 1429 | int fsys::load(const char *path) |
| 1430 | { |
| 1431 | dso module; |
| 1432 | |
| 1433 | module.map(path); |
| 1434 | #ifdef _MSWINDOWS_ |
| 1435 | if(module.ptr) { |
| 1436 | module.ptr = 0; |
| 1437 | return 0; |
| 1438 | } |
| 1439 | return remapError(); |
| 1440 | #else |
| 1441 | if(module.ptr) { |
| 1442 | module.ptr = 0; |
| 1443 | return 0; |
| 1444 | } |
| 1445 | return module.error; |
| 1446 | #endif |
| 1447 | } |
| 1448 | |
| 1449 | bool fsys::is_file(const char *path) |
| 1450 | { |
| 1451 | #ifdef _MSWINDOWS_ |
| 1452 | DWORD attr = GetFileAttributes(path); |
| 1453 | if(attr == (DWORD)~0l) |
| 1454 | return false; |
| 1455 | |
| 1456 | if(attr & FILE_ATTRIBUTE_DIRECTORY) |
| 1457 | return false; |
| 1458 | |
| 1459 | return true; |
| 1460 | |
| 1461 | #else |
| 1462 | struct stat ino; |
| 1463 | |
| 1464 | if(::stat(path, &ino)) |
| 1465 | return false; |
| 1466 | |
| 1467 | if(S_ISREG(ino.st_mode)) |
| 1468 | return true; |
| 1469 | |
| 1470 | return false; |
| 1471 | #endif |
| 1472 | } |
| 1473 | |
| 1474 | bool fsys::is_link(const char *path) |
| 1475 | { |
| 1476 | #if defined(_MSWINDOWS_) |
| 1477 | DWORD attr = GetFileAttributes(path); |
| 1478 | if (attr == 0xffffffff || !(attr & FILE_ATTRIBUTE_REPARSE_POINT)) |
| 1479 | return false; |
| 1480 | return true; |
| 1481 | #elif defined(HAVE_LSTAT) |
| 1482 | struct stat ino; |
| 1483 | |
| 1484 | if(::lstat(path, &ino)) |
| 1485 | return false; |
| 1486 | |
| 1487 | if(S_ISLNK(ino.st_mode)) |
| 1488 | return true; |
| 1489 | |
| 1490 | return false; |
| 1491 | #else |
| 1492 | return false; |
| 1493 | #endif |
| 1494 | } |
| 1495 | |
| 1496 | bool fsys::is_dir(const char *path) |
| 1497 | { |
| 1498 | #ifdef _MSWINDOWS_ |
| 1499 | DWORD attr = GetFileAttributes(path); |
| 1500 | if(attr == (DWORD)~0l) |
| 1501 | return false; |
| 1502 | |
| 1503 | if(attr & FILE_ATTRIBUTE_DIRECTORY) |
| 1504 | return true; |
| 1505 | |
| 1506 | return false; |
| 1507 | |
| 1508 | #else |
| 1509 | struct stat ino; |
| 1510 | |
| 1511 | if(::stat(path, &ino)) |
| 1512 | return false; |
| 1513 | |
| 1514 | if(S_ISDIR(ino.st_mode)) |
| 1515 | return true; |
| 1516 | |
| 1517 | return false; |
| 1518 | #endif |
| 1519 | } |
| 1520 | |
| 1521 | #ifdef _MSWINDOWS_ |
| 1522 | |
| 1523 | void dso::map(const char *path) |
| 1524 | { |
| 1525 | error = 0; |
| 1526 | ptr = LoadLibrary(path); |
| 1527 | if(!ptr) |
| 1528 | error = ENOEXEC; |
| 1529 | } |
| 1530 | |
| 1531 | void dso::release(void) |
| 1532 | { |
| 1533 | if(ptr) |
| 1534 | FreeLibrary(ptr); |
| 1535 | ptr = 0; |
| 1536 | } |
| 1537 | |
| 1538 | dso::addr_t dso::find(const char *sym) const |
| 1539 | { |
| 1540 | if(ptr == 0) |
| 1541 | return (dso::addr_t)NULL; |
| 1542 | |
| 1543 | return (addr_t)GetProcAddress(ptr, sym); |
| 1544 | } |
| 1545 | |
| 1546 | #elif defined(HAVE_DLFCN_H) |
| 1547 | #include <dlfcn.h> |
| 1548 | |
| 1549 | #ifndef RTLD_GLOBAL |
| 1550 | #define RTLD_GLOBAL 0 |
| 1551 | #endif |
| 1552 | |
| 1553 | void dso::map(const char *path) |
| 1554 | { |
| 1555 | error = 0; |
| 1556 | ptr = dlopen(path, RTLD_NOW | RTLD_GLOBAL); |
| 1557 | if(ptr == NULL) |
| 1558 | error = ENOEXEC; |
| 1559 | } |
| 1560 | |
| 1561 | void dso::release(void) |
| 1562 | { |
| 1563 | if(ptr) |
| 1564 | dlclose(ptr); |
| 1565 | ptr = NULL; |
| 1566 | } |
| 1567 | |
| 1568 | dso::addr_t dso::find(const char *sym) const |
| 1569 | { |
| 1570 | if(!ptr) |
| 1571 | return (dso::addr_t)NULL; |
| 1572 | |
| 1573 | return (dso::addr_t)dlsym(ptr, (char *)sym); |
| 1574 | } |
| 1575 | |
| 1576 | #elif HAVE_MACH_O_DYLD_H |
| 1577 | #include <mach-o/dyld.h> |
| 1578 | |
| 1579 | void dso::map(const char *path) |
| 1580 | { |
| 1581 | NSObjectFileImage oImage; |
| 1582 | NSSymbol sym = NULL; |
| 1583 | NSModule mod; |
| 1584 | void (*init)(void); |
| 1585 | |
| 1586 | ptr = NULL; |
| 1587 | error = 0; |
| 1588 | |
| 1589 | if(NSCreateObjectFileImageFromFile(path, &oImage) != NSObjectFileImageSuccess) { |
| 1590 | error = ENOEXEC; |
| 1591 | return; |
| 1592 | } |
| 1593 | |
| 1594 | mod = NSLinkModule(oImage, path, NSLINKMODULE_OPTION_BINDNOW | NSLINKMODULE_OPTION_RETURN_ON_ERROR); |
| 1595 | NSDestroyObjectFileImage(oImage); |
| 1596 | if(mod == NULL) { |
| 1597 | error = ENOEXEC; |
| 1598 | return; |
| 1599 | } |
| 1600 | |
| 1601 | sym = NSLookupSymbolInModule(mod, "__init"); |
| 1602 | if(sym) { |
| 1603 | init = (void (*)(void))NSAddressOfSymbol(sym); |
| 1604 | init(); |
| 1605 | } |
| 1606 | ptr = (void *)mod; |
| 1607 | } |
| 1608 | |
| 1609 | void dso::release(void) |
| 1610 | { |
| 1611 | if(!ptr) |
| 1612 | return; |
| 1613 | |
| 1614 | NSModule mod = (NSModule)ptr; |
| 1615 | NSSymbol sym; |
| 1616 | void (*fini)(void); |
| 1617 | ptr = NULL; |
| 1618 | |
| 1619 | sym = NSLookupSymbolInModule(mod, "__fini"); |
| 1620 | if(sym != NULL) { |
| 1621 | fini = (void (*)(void))NSAddressOfSymbol(sym); |
| 1622 | fini(); |
| 1623 | } |
| 1624 | NSUnlinkModule(mod, NSUNLINKMODULE_OPTION_NONE); |
| 1625 | } |
| 1626 | |
| 1627 | dso::addr_t dso::find(const char *sym) const |
| 1628 | { |
| 1629 | if(!ptr) |
| 1630 | return NULL; |
| 1631 | |
| 1632 | NSModule mod = (NSModule)ptr; |
| 1633 | NSSymbol sym; |
| 1634 | |
| 1635 | sym = NSLookupSymbolInModule(mod, sym); |
| 1636 | if(sym != NULL) { |
| 1637 | return (dso::addr_t)NSAddressOfSymbol(sym); |
| 1638 | |
| 1639 | return (dso::addr_t)NULL; |
| 1640 | } |
| 1641 | |
| 1642 | #elif HAVE_SHL_LOAD |
| 1643 | #include <dl.h> |
| 1644 | |
| 1645 | void dso::map(const char *path) |
| 1646 | { |
| 1647 | error = 0; |
| 1648 | ptr = (void *)shl_load(path, BIND_IMMEDIATE, 0l); |
| 1649 | if(!ptr) |
| 1650 | error = ENOEXEC; |
| 1651 | } |
| 1652 | |
| 1653 | dso::addr_t dso::find(const char *sym) const |
| 1654 | { |
| 1655 | if(!ptr) |
| 1656 | return (dso::addr_t)NULL; |
| 1657 | |
| 1658 | shl_t image = (shl_t)ptr; |
| 1659 | |
| 1660 | if(shl_findsym(&image, sym, 0, &value) == 0) |
| 1661 | return (dso::addr_t)value; |
| 1662 | |
| 1663 | return (dso::addr_t)NULL; |
| 1664 | } |
| 1665 | |
| 1666 | void dso::release(void) |
| 1667 | { |
| 1668 | shl_t image = (shl_t)ptr; |
| 1669 | if(ptr) |
| 1670 | shl_unload(image); |
| 1671 | ptr = NULL; |
| 1672 | } |
| 1673 | |
| 1674 | #else |
| 1675 | |
| 1676 | void fsys::map(const char *path) |
| 1677 | { |
| 1678 | error = ENOEXEC; |
| 1679 | ptr = NULL; |
| 1680 | } |
| 1681 | |
| 1682 | void dso::release(void) |
| 1683 | { |
| 1684 | } |
| 1685 | |
| 1686 | dso::addr_t dso::find(const char *sym) const |
| 1687 | { |
| 1688 | return (dso::addr_t)NULL; |
| 1689 | } |
| 1690 | |
| 1691 | #endif |
| 1692 | |
| 1693 | bool fsys::is_device(const char *path) |
| 1694 | { |
| 1695 | if(!path) |
| 1696 | return false; |
| 1697 | |
| 1698 | #ifndef _MSWINDOWS_ |
| 1699 | if(is_dir(path)) |
| 1700 | return false; |
| 1701 | |
| 1702 | if(!strncmp(path, "/dev/", 5)) |
| 1703 | return true; |
| 1704 | |
| 1705 | return false; |
| 1706 | #else |
| 1707 | if(path[1] == ':' && !path[2] && isalpha(*path)) |
| 1708 | return true; |
| 1709 | |
| 1710 | if(!strncmp(path, "com", 3) || !strncmp(path, "lpt", 3)) { |
| 1711 | path += 3; |
| 1712 | while(isdigit(*path)) |
| 1713 | ++path; |
| 1714 | if(!path || *path == ':') |
| 1715 | return true; |
| 1716 | return false; |
| 1717 | } |
| 1718 | |
| 1719 | if(!strcmp(path, "aux") || !strcmp(path, "prn")) { |
| 1720 | if(!path[3] || path[3] == ':') |
| 1721 | return true; |
| 1722 | return false; |
| 1723 | } |
| 1724 | |
| 1725 | if(!strncmp(path, "\\\\.\\", 4)) |
| 1726 | return true; |
| 1727 | |
| 1728 | if(!strnicmp(path, "\\\\?\\Device\\", 12)) |
| 1729 | return true; |
| 1730 | |
| 1731 | return false; |
| 1732 | |
| 1733 | #endif |
| 1734 | } |
| 1735 | |
| 1736 | bool fsys::is_hidden(const char *path) |
| 1737 | { |
| 1738 | #ifdef _MSWINDOWS_ |
| 1739 | DWORD attr = GetFileAttributes(path); |
| 1740 | if(attr == (DWORD)~0l) |
| 1741 | return false; |
| 1742 | |
| 1743 | return ((attr & FILE_ATTRIBUTE_HIDDEN) != 0); |
| 1744 | #else |
| 1745 | const char *cp = strrchr(path, '/'); |
| 1746 | if(cp) |
| 1747 | ++cp; |
| 1748 | else |
| 1749 | cp = path; |
| 1750 | |
| 1751 | if(*cp == '.') |
| 1752 | return true; |
| 1753 | |
| 1754 | return false; |
| 1755 | #endif |
| 1756 | } |
| 1757 | |
| 1758 | fsys::fsys(fd_t handle) |
| 1759 | { |
| 1760 | fd = handle; |
| 1761 | error = 0; |
| 1762 | } |
| 1763 | |
| 1764 | void fsys::set(fd_t handle) |
| 1765 | { |
| 1766 | close(); |
| 1767 | fd = handle; |
| 1768 | error = 0; |
| 1769 | } |
| 1770 | |
| 1771 | fd_t fsys::release(void) |
| 1772 | { |
| 1773 | fd_t save = fd; |
| 1774 | |
| 1775 | fd = INVALID_HANDLE_VALUE; |
| 1776 | error = 0; |
| 1777 | return save; |
| 1778 | } |
| 1779 | |
| 1780 | int fsys::exec(const char *path, char **argv, char **envp) |
| 1781 | { |
| 1782 | shell::pid_t pid = shell::spawn(path, argv, envp); |
| 1783 | return shell::wait(pid); |
| 1784 | } |
| 1785 | |
| 1786 | string_t fsys::prefix(void) |
| 1787 | { |
| 1788 | char buf[256]; |
| 1789 | |
| 1790 | prefix(buf, sizeof(buf)); |
| 1791 | string_t s = buf; |
| 1792 | return s; |
| 1793 | } |