1/* This file contains functions which implement those POSIX and Linux functions 2 * that MinGW and Microsoft don't provide. The implementations contain just enough 3 * functionality to support fio. 4 */ 5 6#include <arpa/inet.h> 7#include <netinet/in.h> 8#include <windows.h> 9#include <stddef.h> 10#include <string.h> 11#include <stdlib.h> 12#include <unistd.h> 13#include <dirent.h> 14#include <pthread.h> 15#include <time.h> 16#include <semaphore.h> 17#include <sys/shm.h> 18#include <sys/mman.h> 19#include <sys/uio.h> 20#include <sys/resource.h> 21#include <sys/poll.h> 22#include <sys/wait.h> 23#include <setjmp.h> 24 25#include "../os-windows.h" 26#include "../../lib/hweight.h" 27 28extern unsigned long mtime_since_now(struct timeval *); 29extern void fio_gettime(struct timeval *, void *); 30 31/* These aren't defined in the MinGW headers */ 32HRESULT WINAPI StringCchCopyA( 33 char *pszDest, 34 size_t cchDest, 35 const char *pszSrc); 36 37HRESULT WINAPI StringCchPrintfA( 38 char *pszDest, 39 size_t cchDest, 40 const char *pszFormat, 41 ...); 42 43int vsprintf_s( 44 char *buffer, 45 size_t numberOfElements, 46 const char *format, 47 va_list argptr); 48 49int win_to_posix_error(DWORD winerr) 50{ 51 switch (winerr) 52 { 53 case ERROR_FILE_NOT_FOUND: return ENOENT; 54 case ERROR_PATH_NOT_FOUND: return ENOENT; 55 case ERROR_ACCESS_DENIED: return EACCES; 56 case ERROR_INVALID_HANDLE: return EBADF; 57 case ERROR_NOT_ENOUGH_MEMORY: return ENOMEM; 58 case ERROR_INVALID_DATA: return EINVAL; 59 case ERROR_OUTOFMEMORY: return ENOMEM; 60 case ERROR_INVALID_DRIVE: return ENODEV; 61 case ERROR_NOT_SAME_DEVICE: return EXDEV; 62 case ERROR_WRITE_PROTECT: return EROFS; 63 case ERROR_BAD_UNIT: return ENODEV; 64 case ERROR_SHARING_VIOLATION: return EACCES; 65 case ERROR_LOCK_VIOLATION: return EACCES; 66 case ERROR_SHARING_BUFFER_EXCEEDED: return ENOLCK; 67 case ERROR_HANDLE_DISK_FULL: return ENOSPC; 68 case ERROR_NOT_SUPPORTED: return ENOSYS; 69 case ERROR_FILE_EXISTS: return EEXIST; 70 case ERROR_CANNOT_MAKE: return EPERM; 71 case ERROR_INVALID_PARAMETER: return EINVAL; 72 case ERROR_NO_PROC_SLOTS: return EAGAIN; 73 case ERROR_BROKEN_PIPE: return EPIPE; 74 case ERROR_OPEN_FAILED: return EIO; 75 case ERROR_NO_MORE_SEARCH_HANDLES: return ENFILE; 76 case ERROR_CALL_NOT_IMPLEMENTED: return ENOSYS; 77 case ERROR_INVALID_NAME: return ENOENT; 78 case ERROR_WAIT_NO_CHILDREN: return ECHILD; 79 case ERROR_CHILD_NOT_COMPLETE: return EBUSY; 80 case ERROR_DIR_NOT_EMPTY: return ENOTEMPTY; 81 case ERROR_SIGNAL_REFUSED: return EIO; 82 case ERROR_BAD_PATHNAME: return ENOENT; 83 case ERROR_SIGNAL_PENDING: return EBUSY; 84 case ERROR_MAX_THRDS_REACHED: return EAGAIN; 85 case ERROR_BUSY: return EBUSY; 86 case ERROR_ALREADY_EXISTS: return EEXIST; 87 case ERROR_NO_SIGNAL_SENT: return EIO; 88 case ERROR_FILENAME_EXCED_RANGE: return EINVAL; 89 case ERROR_META_EXPANSION_TOO_LONG: return EINVAL; 90 case ERROR_INVALID_SIGNAL_NUMBER: return EINVAL; 91 case ERROR_THREAD_1_INACTIVE: return EINVAL; 92 case ERROR_BAD_PIPE: return EINVAL; 93 case ERROR_PIPE_BUSY: return EBUSY; 94 case ERROR_NO_DATA: return EPIPE; 95 case ERROR_MORE_DATA: return EAGAIN; 96 case ERROR_DIRECTORY: return ENOTDIR; 97 case ERROR_PIPE_CONNECTED: return EBUSY; 98 case ERROR_NO_TOKEN: return EINVAL; 99 case ERROR_PROCESS_ABORTED: return EFAULT; 100 case ERROR_BAD_DEVICE: return ENODEV; 101 case ERROR_BAD_USERNAME: return EINVAL; 102 case ERROR_OPEN_FILES: return EAGAIN; 103 case ERROR_ACTIVE_CONNECTIONS: return EAGAIN; 104 case ERROR_DEVICE_IN_USE: return EAGAIN; 105 case ERROR_INVALID_AT_INTERRUPT_TIME: return EINTR; 106 case ERROR_IO_DEVICE: return EIO; 107 case ERROR_NOT_OWNER: return EPERM; 108 case ERROR_END_OF_MEDIA: return ENOSPC; 109 case ERROR_EOM_OVERFLOW: return ENOSPC; 110 case ERROR_BEGINNING_OF_MEDIA: return ESPIPE; 111 case ERROR_SETMARK_DETECTED: return ESPIPE; 112 case ERROR_NO_DATA_DETECTED: return ENOSPC; 113 case ERROR_POSSIBLE_DEADLOCK: return EDEADLOCK; 114 case ERROR_CRC: return EIO; 115 case ERROR_NEGATIVE_SEEK: return EINVAL; 116 case ERROR_DISK_FULL: return ENOSPC; 117 case ERROR_NOACCESS: return EFAULT; 118 case ERROR_FILE_INVALID: return ENXIO; 119 } 120 121 return winerr; 122} 123 124int GetNumLogicalProcessors(void) 125{ 126 SYSTEM_LOGICAL_PROCESSOR_INFORMATION *processor_info = NULL; 127 DWORD len = 0; 128 DWORD num_processors = 0; 129 DWORD error = 0; 130 DWORD i; 131 132 while (!GetLogicalProcessorInformation(processor_info, &len)) { 133 error = GetLastError(); 134 if (error == ERROR_INSUFFICIENT_BUFFER) 135 processor_info = malloc(len); 136 else { 137 log_err("Error: GetLogicalProcessorInformation failed: %d\n", error); 138 return -1; 139 } 140 141 if (processor_info == NULL) { 142 log_err("Error: failed to allocate memory for GetLogicalProcessorInformation"); 143 return -1; 144 } 145 } 146 147 for (i = 0; i < len / sizeof(SYSTEM_LOGICAL_PROCESSOR_INFORMATION); i++) 148 { 149 if (processor_info[i].Relationship == RelationProcessorCore) 150 num_processors += hweight64(processor_info[i].ProcessorMask); 151 } 152 153 free(processor_info); 154 return num_processors; 155} 156 157long sysconf(int name) 158{ 159 long val = -1; 160 long val2 = -1; 161 SYSTEM_INFO sysInfo; 162 MEMORYSTATUSEX status; 163 164 switch (name) 165 { 166 case _SC_NPROCESSORS_ONLN: 167 val = GetNumLogicalProcessors(); 168 if (val == -1) 169 log_err("sysconf(_SC_NPROCESSORS_ONLN) failed\n"); 170 171 break; 172 173 case _SC_PAGESIZE: 174 GetSystemInfo(&sysInfo); 175 val = sysInfo.dwPageSize; 176 break; 177 178 case _SC_PHYS_PAGES: 179 status.dwLength = sizeof(status); 180 val2 = sysconf(_SC_PAGESIZE); 181 if (GlobalMemoryStatusEx(&status) && val2 != -1) 182 val = status.ullTotalPhys / val2; 183 else 184 log_err("sysconf(_SC_PHYS_PAGES) failed\n"); 185 break; 186 default: 187 log_err("sysconf(%d) is not implemented\n", name); 188 break; 189 } 190 191 return val; 192} 193 194char *dl_error = NULL; 195 196int dlclose(void *handle) 197{ 198 return !FreeLibrary((HMODULE)handle); 199} 200 201void *dlopen(const char *file, int mode) 202{ 203 HMODULE hMod; 204 205 hMod = LoadLibrary(file); 206 if (hMod == INVALID_HANDLE_VALUE) 207 dl_error = (char*)"LoadLibrary failed"; 208 else 209 dl_error = NULL; 210 211 return hMod; 212} 213 214void *dlsym(void *handle, const char *name) 215{ 216 FARPROC fnPtr; 217 218 fnPtr = GetProcAddress((HMODULE)handle, name); 219 if (fnPtr == NULL) 220 dl_error = (char*)"GetProcAddress failed"; 221 else 222 dl_error = NULL; 223 224 return fnPtr; 225} 226 227char *dlerror(void) 228{ 229 return dl_error; 230} 231 232int gettimeofday(struct timeval *restrict tp, void *restrict tzp) 233{ 234 FILETIME fileTime; 235 uint64_t unix_time, windows_time; 236 const uint64_t MILLISECONDS_BETWEEN_1601_AND_1970 = 11644473600000; 237 238 /* Ignore the timezone parameter */ 239 (void)tzp; 240 241 /* 242 * Windows time is stored as the number 100 ns intervals since January 1 1601. 243 * Conversion details from http://www.informit.com/articles/article.aspx?p=102236&seqNum=3 244 * Its precision is 100 ns but accuracy is only one clock tick, or normally around 15 ms. 245 */ 246 GetSystemTimeAsFileTime(&fileTime); 247 windows_time = ((uint64_t)fileTime.dwHighDateTime << 32) + fileTime.dwLowDateTime; 248 /* Divide by 10,000 to convert to ms and subtract the time between 1601 and 1970 */ 249 unix_time = (((windows_time)/10000) - MILLISECONDS_BETWEEN_1601_AND_1970); 250 /* unix_time is now the number of milliseconds since 1970 (the Unix epoch) */ 251 tp->tv_sec = unix_time / 1000; 252 tp->tv_usec = (unix_time % 1000) * 1000; 253 return 0; 254} 255 256int sigaction(int sig, const struct sigaction *act, 257 struct sigaction *oact) 258{ 259 int rc = 0; 260 void (*prev_handler)(int); 261 262 prev_handler = signal(sig, act->sa_handler); 263 if (oact != NULL) 264 oact->sa_handler = prev_handler; 265 266 if (prev_handler == SIG_ERR) 267 rc = -1; 268 269 return rc; 270} 271 272int lstat(const char * path, struct stat * buf) 273{ 274 return stat(path, buf); 275} 276 277void *mmap(void *addr, size_t len, int prot, int flags, 278 int fildes, off_t off) 279{ 280 DWORD vaProt = 0; 281 void* allocAddr = NULL; 282 283 if (prot & PROT_NONE) 284 vaProt |= PAGE_NOACCESS; 285 286 if ((prot & PROT_READ) && !(prot & PROT_WRITE)) 287 vaProt |= PAGE_READONLY; 288 289 if (prot & PROT_WRITE) 290 vaProt |= PAGE_READWRITE; 291 292 if ((flags & MAP_ANON) | (flags & MAP_ANONYMOUS)) 293 { 294 allocAddr = VirtualAlloc(addr, len, MEM_COMMIT, vaProt); 295 if (allocAddr == NULL) 296 errno = win_to_posix_error(GetLastError()); 297 } 298 299 return allocAddr; 300} 301 302int munmap(void *addr, size_t len) 303{ 304 if (!VirtualFree(addr, 0, MEM_RELEASE)) { 305 errno = win_to_posix_error(GetLastError()); 306 return -1; 307 } 308 309 return 0; 310} 311 312int fork(void) 313{ 314 log_err("%s is not implemented\n", __func__); 315 errno = ENOSYS; 316 return -1; 317} 318 319pid_t setsid(void) 320{ 321 log_err("%s is not implemented\n", __func__); 322 errno = ENOSYS; 323 return -1; 324} 325 326static HANDLE log_file = INVALID_HANDLE_VALUE; 327 328void openlog(const char *ident, int logopt, int facility) 329{ 330 if (log_file == INVALID_HANDLE_VALUE) 331 log_file = CreateFileA("syslog.txt", GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, 0, NULL); 332} 333 334void closelog(void) 335{ 336 CloseHandle(log_file); 337 log_file = INVALID_HANDLE_VALUE; 338} 339 340void syslog(int priority, const char *message, ... /* argument */) 341{ 342 va_list v; 343 int len; 344 char *output; 345 DWORD bytes_written; 346 347 if (log_file == INVALID_HANDLE_VALUE) { 348 log_file = CreateFileA("syslog.txt", GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_ALWAYS, 0, NULL); 349 } 350 351 if (log_file == INVALID_HANDLE_VALUE) { 352 log_err("syslog: failed to open log file\n"); 353 return; 354 } 355 356 va_start(v, message); 357 len = _vscprintf(message, v); 358 output = malloc(len + sizeof(char)); 359 vsprintf(output, message, v); 360 WriteFile(log_file, output, len, &bytes_written, NULL); 361 va_end(v); 362 free(output); 363} 364 365int kill(pid_t pid, int sig) 366{ 367 errno = ESRCH; 368 return -1; 369} 370 371/* 372 * This is assumed to be used only by the network code, 373 * and so doesn't try and handle any of the other cases 374 */ 375int fcntl(int fildes, int cmd, ...) 376{ 377 /* 378 * non-blocking mode doesn't work the same as in BSD sockets, 379 * so ignore it. 380 */ 381#if 0 382 va_list ap; 383 int val, opt, status; 384 385 if (cmd == F_GETFL) 386 return 0; 387 else if (cmd != F_SETFL) { 388 errno = EINVAL; 389 return -1; 390 } 391 392 va_start(ap, 1); 393 394 opt = va_arg(ap, int); 395 if (opt & O_NONBLOCK) 396 val = 1; 397 else 398 val = 0; 399 400 status = ioctlsocket((SOCKET)fildes, opt, &val); 401 402 if (status == SOCKET_ERROR) { 403 errno = EINVAL; 404 val = -1; 405 } 406 407 va_end(ap); 408 409 return val; 410#endif 411return 0; 412} 413 414/* 415 * Get the value of a local clock source. 416 * This implementation supports 2 clocks: CLOCK_MONOTONIC provides high-accuracy 417 * relative time, while CLOCK_REALTIME provides a low-accuracy wall time. 418 */ 419int clock_gettime(clockid_t clock_id, struct timespec *tp) 420{ 421 int rc = 0; 422 423 if (clock_id == CLOCK_MONOTONIC) 424 { 425 static LARGE_INTEGER freq = {{0,0}}; 426 LARGE_INTEGER counts; 427 uint64_t t; 428 429 QueryPerformanceCounter(&counts); 430 if (freq.QuadPart == 0) 431 QueryPerformanceFrequency(&freq); 432 433 tp->tv_sec = counts.QuadPart / freq.QuadPart; 434 /* Get the difference between the number of ns stored 435 * in 'tv_sec' and that stored in 'counts' */ 436 t = tp->tv_sec * freq.QuadPart; 437 t = counts.QuadPart - t; 438 /* 't' now contains the number of cycles since the last second. 439 * We want the number of nanoseconds, so multiply out by 1,000,000,000 440 * and then divide by the frequency. */ 441 t *= 1000000000; 442 tp->tv_nsec = t / freq.QuadPart; 443 } 444 else if (clock_id == CLOCK_REALTIME) 445 { 446 /* clock_gettime(CLOCK_REALTIME,...) is just an alias for gettimeofday with a 447 * higher-precision field. */ 448 struct timeval tv; 449 gettimeofday(&tv, NULL); 450 tp->tv_sec = tv.tv_sec; 451 tp->tv_nsec = tv.tv_usec * 1000; 452 } else { 453 errno = EINVAL; 454 rc = -1; 455 } 456 457 return rc; 458} 459 460int mlock(const void * addr, size_t len) 461{ 462 SIZE_T min, max; 463 BOOL success; 464 HANDLE process = GetCurrentProcess(); 465 466 success = GetProcessWorkingSetSize(process, &min, &max); 467 if (!success) { 468 errno = win_to_posix_error(GetLastError()); 469 return -1; 470 } 471 472 min += len; 473 max += len; 474 success = SetProcessWorkingSetSize(process, min, max); 475 if (!success) { 476 errno = win_to_posix_error(GetLastError()); 477 return -1; 478 } 479 480 success = VirtualLock((LPVOID)addr, len); 481 if (!success) { 482 errno = win_to_posix_error(GetLastError()); 483 return -1; 484 } 485 486 return 0; 487} 488 489int munlock(const void * addr, size_t len) 490{ 491 BOOL success = VirtualUnlock((LPVOID)addr, len); 492 if (!success) { 493 errno = win_to_posix_error(GetLastError()); 494 return -1; 495 } 496 497 return 0; 498} 499 500pid_t waitpid(pid_t pid, int *stat_loc, int options) 501{ 502 log_err("%s is not implemented\n", __func__); 503 errno = ENOSYS; 504 return -1; 505} 506 507int usleep(useconds_t useconds) 508{ 509 Sleep(useconds / 1000); 510 return 0; 511} 512 513char *basename(char *path) 514{ 515 static char name[MAX_PATH]; 516 int i; 517 518 if (path == NULL || strlen(path) == 0) 519 return (char*)"."; 520 521 i = strlen(path) - 1; 522 523 while (path[i] != '\\' && path[i] != '/' && i >= 0) 524 i--; 525 526 strncpy(name, path + i + 1, MAX_PATH); 527 528 return name; 529} 530 531int fsync(int fildes) 532{ 533 HANDLE hFile = (HANDLE)_get_osfhandle(fildes); 534 if (!FlushFileBuffers(hFile)) { 535 errno = win_to_posix_error(GetLastError()); 536 return -1; 537 } 538 539 return 0; 540} 541 542int nFileMappings = 0; 543HANDLE fileMappings[1024]; 544 545int shmget(key_t key, size_t size, int shmflg) 546{ 547 int mapid = -1; 548 uint32_t size_low = size & 0xFFFFFFFF; 549 uint32_t size_high = ((uint64_t)size) >> 32; 550 HANDLE hMapping = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, (PAGE_EXECUTE_READWRITE | SEC_RESERVE), size_high, size_low, NULL); 551 if (hMapping != NULL) { 552 fileMappings[nFileMappings] = hMapping; 553 mapid = nFileMappings; 554 nFileMappings++; 555 } else { 556 errno = ENOSYS; 557 } 558 559 return mapid; 560} 561 562void *shmat(int shmid, const void *shmaddr, int shmflg) 563{ 564 void* mapAddr; 565 MEMORY_BASIC_INFORMATION memInfo; 566 mapAddr = MapViewOfFile(fileMappings[shmid], FILE_MAP_ALL_ACCESS, 0, 0, 0); 567 if (mapAddr == NULL) { 568 errno = win_to_posix_error(GetLastError()); 569 return (void*)-1; 570 } 571 572 if (VirtualQuery(mapAddr, &memInfo, sizeof(memInfo)) == 0) { 573 errno = win_to_posix_error(GetLastError()); 574 return (void*)-1; 575 } 576 577 mapAddr = VirtualAlloc(mapAddr, memInfo.RegionSize, MEM_COMMIT, PAGE_READWRITE); 578 if (mapAddr == NULL) { 579 errno = win_to_posix_error(GetLastError()); 580 return (void*)-1; 581 } 582 583 return mapAddr; 584} 585 586int shmdt(const void *shmaddr) 587{ 588 if (!UnmapViewOfFile(shmaddr)) { 589 errno = win_to_posix_error(GetLastError()); 590 return -1; 591 } 592 593 return 0; 594} 595 596int shmctl(int shmid, int cmd, struct shmid_ds *buf) 597{ 598 if (cmd == IPC_RMID) { 599 fileMappings[shmid] = INVALID_HANDLE_VALUE; 600 return 0; 601 } else { 602 log_err("%s is not implemented\n", __func__); 603 } 604 errno = ENOSYS; 605 return -1; 606} 607 608int setuid(uid_t uid) 609{ 610 log_err("%s is not implemented\n", __func__); 611 errno = ENOSYS; 612 return -1; 613} 614 615int setgid(gid_t gid) 616{ 617 log_err("%s is not implemented\n", __func__); 618 errno = ENOSYS; 619 return -1; 620} 621 622int nice(int incr) 623{ 624 if (incr != 0) { 625 errno = EINVAL; 626 return -1; 627 } 628 629 return 0; 630} 631 632int getrusage(int who, struct rusage *r_usage) 633{ 634 const uint64_t SECONDS_BETWEEN_1601_AND_1970 = 11644473600; 635 FILETIME cTime, eTime, kTime, uTime; 636 time_t time; 637 HANDLE h; 638 639 memset(r_usage, 0, sizeof(*r_usage)); 640 641 if (who == RUSAGE_SELF) { 642 h = GetCurrentProcess(); 643 GetProcessTimes(h, &cTime, &eTime, &kTime, &uTime); 644 } else if (who == RUSAGE_THREAD) { 645 h = GetCurrentThread(); 646 GetThreadTimes(h, &cTime, &eTime, &kTime, &uTime); 647 } else { 648 log_err("fio: getrusage %d is not implemented\n", who); 649 return -1; 650 } 651 652 time = ((uint64_t)uTime.dwHighDateTime << 32) + uTime.dwLowDateTime; 653 /* Divide by 10,000,000 to get the number of seconds and move the epoch from 654 * 1601 to 1970 */ 655 time = (time_t)(((time)/10000000) - SECONDS_BETWEEN_1601_AND_1970); 656 r_usage->ru_utime.tv_sec = time; 657 /* getrusage() doesn't care about anything other than seconds, so set tv_usec to 0 */ 658 r_usage->ru_utime.tv_usec = 0; 659 time = ((uint64_t)kTime.dwHighDateTime << 32) + kTime.dwLowDateTime; 660 /* Divide by 10,000,000 to get the number of seconds and move the epoch from 661 * 1601 to 1970 */ 662 time = (time_t)(((time)/10000000) - SECONDS_BETWEEN_1601_AND_1970); 663 r_usage->ru_stime.tv_sec = time; 664 r_usage->ru_stime.tv_usec = 0; 665 return 0; 666} 667 668int posix_madvise(void *addr, size_t len, int advice) 669{ 670 log_err("%s is not implemented\n", __func__); 671 return ENOSYS; 672} 673 674/* Windows doesn't support advice for memory pages. Just ignore it. */ 675int msync(void *addr, size_t len, int flags) 676{ 677 errno = ENOSYS; 678 return -1; 679} 680 681int fdatasync(int fildes) 682{ 683 return fsync(fildes); 684} 685 686ssize_t pwrite(int fildes, const void *buf, size_t nbyte, 687 off_t offset) 688{ 689 int64_t pos = _telli64(fildes); 690 ssize_t len = _write(fildes, buf, nbyte); 691 _lseeki64(fildes, pos, SEEK_SET); 692 return len; 693} 694 695ssize_t pread(int fildes, void *buf, size_t nbyte, off_t offset) 696{ 697 int64_t pos = _telli64(fildes); 698 ssize_t len = read(fildes, buf, nbyte); 699 _lseeki64(fildes, pos, SEEK_SET); 700 return len; 701} 702 703ssize_t readv(int fildes, const struct iovec *iov, int iovcnt) 704{ 705 log_err("%s is not implemented\n", __func__); 706 errno = ENOSYS; 707 return -1; 708} 709 710ssize_t writev(int fildes, const struct iovec *iov, int iovcnt) 711{ 712 int i; 713 DWORD bytes_written = 0; 714 for (i = 0; i < iovcnt; i++) 715 { 716 int len = send((SOCKET)fildes, iov[i].iov_base, iov[i].iov_len, 0); 717 if (len == SOCKET_ERROR) 718 { 719 DWORD err = GetLastError(); 720 errno = win_to_posix_error(err); 721 bytes_written = -1; 722 break; 723 } 724 bytes_written += len; 725 } 726 727 return bytes_written; 728} 729 730long long strtoll(const char *restrict str, char **restrict endptr, 731 int base) 732{ 733 return _strtoi64(str, endptr, base); 734} 735 736int poll(struct pollfd fds[], nfds_t nfds, int timeout) 737{ 738 struct timeval tv; 739 struct timeval *to = NULL; 740 fd_set readfds, writefds, exceptfds; 741 int i; 742 int rc; 743 744 if (timeout != -1) { 745 to = &tv; 746 to->tv_sec = timeout / 1000; 747 to->tv_usec = (timeout % 1000) * 1000; 748 } 749 750 FD_ZERO(&readfds); 751 FD_ZERO(&writefds); 752 FD_ZERO(&exceptfds); 753 754 for (i = 0; i < nfds; i++) 755 { 756 if (fds[i].fd < 0) { 757 fds[i].revents = 0; 758 continue; 759 } 760 761 if (fds[i].events & POLLIN) 762 FD_SET(fds[i].fd, &readfds); 763 764 if (fds[i].events & POLLOUT) 765 FD_SET(fds[i].fd, &writefds); 766 767 FD_SET(fds[i].fd, &exceptfds); 768 } 769 rc = select(nfds, &readfds, &writefds, &exceptfds, to); 770 771 if (rc != SOCKET_ERROR) { 772 for (i = 0; i < nfds; i++) 773 { 774 if (fds[i].fd < 0) { 775 continue; 776 } 777 778 if ((fds[i].events & POLLIN) && FD_ISSET(fds[i].fd, &readfds)) 779 fds[i].revents |= POLLIN; 780 781 if ((fds[i].events & POLLOUT) && FD_ISSET(fds[i].fd, &writefds)) 782 fds[i].revents |= POLLOUT; 783 784 if (FD_ISSET(fds[i].fd, &exceptfds)) 785 fds[i].revents |= POLLHUP; 786 } 787 } 788 return rc; 789} 790 791int nanosleep(const struct timespec *rqtp, struct timespec *rmtp) 792{ 793 struct timeval tv; 794 DWORD ms_remaining; 795 DWORD ms_total = (rqtp->tv_sec * 1000) + (rqtp->tv_nsec / 1000000.0); 796 797 if (ms_total == 0) 798 ms_total = 1; 799 800 ms_remaining = ms_total; 801 802 /* Since Sleep() can sleep for less than the requested time, add a loop to 803 ensure we only return after the requested length of time has elapsed */ 804 do { 805 fio_gettime(&tv, NULL); 806 Sleep(ms_remaining); 807 ms_remaining = ms_total - mtime_since_now(&tv); 808 } while (ms_remaining > 0 && ms_remaining < ms_total); 809 810 /* this implementation will never sleep for less than the requested time */ 811 if (rmtp != NULL) { 812 rmtp->tv_sec = 0; 813 rmtp->tv_nsec = 0; 814 } 815 816 return 0; 817} 818 819DIR *opendir(const char *dirname) 820{ 821 struct dirent_ctx *dc = NULL; 822 823 /* See if we can open it. If not, we'll return an error here */ 824 HANDLE file = CreateFileA(dirname, 0, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); 825 if (file != INVALID_HANDLE_VALUE) { 826 CloseHandle(file); 827 dc = (struct dirent_ctx*)malloc(sizeof(struct dirent_ctx)); 828 StringCchCopyA(dc->dirname, MAX_PATH, dirname); 829 dc->find_handle = INVALID_HANDLE_VALUE; 830 } else { 831 DWORD error = GetLastError(); 832 if (error == ERROR_FILE_NOT_FOUND) 833 errno = ENOENT; 834 835 else if (error == ERROR_PATH_NOT_FOUND) 836 errno = ENOTDIR; 837 else if (error == ERROR_TOO_MANY_OPEN_FILES) 838 errno = ENFILE; 839 else if (error == ERROR_ACCESS_DENIED) 840 errno = EACCES; 841 else 842 errno = error; 843 } 844 845 return dc; 846} 847 848int closedir(DIR *dirp) 849{ 850 if (dirp != NULL && dirp->find_handle != INVALID_HANDLE_VALUE) 851 FindClose(dirp->find_handle); 852 853 free(dirp); 854 return 0; 855} 856 857struct dirent *readdir(DIR *dirp) 858{ 859 static struct dirent de; 860 WIN32_FIND_DATA find_data; 861 862 if (dirp == NULL) 863 return NULL; 864 865 if (dirp->find_handle == INVALID_HANDLE_VALUE) { 866 char search_pattern[MAX_PATH]; 867 StringCchPrintfA(search_pattern, MAX_PATH, "%s\\*", dirp->dirname); 868 dirp->find_handle = FindFirstFileA(search_pattern, &find_data); 869 if (dirp->find_handle == INVALID_HANDLE_VALUE) 870 return NULL; 871 } else { 872 if (!FindNextFile(dirp->find_handle, &find_data)) 873 return NULL; 874 } 875 876 StringCchCopyA(de.d_name, MAX_PATH, find_data.cFileName); 877 de.d_ino = 0; 878 879 return &de; 880} 881 882uid_t geteuid(void) 883{ 884 log_err("%s is not implemented\n", __func__); 885 errno = ENOSYS; 886 return -1; 887} 888 889in_addr_t inet_network(const char *cp) 890{ 891 in_addr_t hbo; 892 in_addr_t nbo = inet_addr(cp); 893 hbo = ((nbo & 0xFF) << 24) + ((nbo & 0xFF00) << 8) + ((nbo & 0xFF0000) >> 8) + ((nbo & 0xFF000000) >> 24); 894 return hbo; 895} 896 897const char* inet_ntop(int af, const void *restrict src, 898 char *restrict dst, socklen_t size) 899{ 900 INT status = SOCKET_ERROR; 901 WSADATA wsd; 902 char *ret = NULL; 903 904 if (af != AF_INET && af != AF_INET6) { 905 errno = EAFNOSUPPORT; 906 return NULL; 907 } 908 909 WSAStartup(MAKEWORD(2,2), &wsd); 910 911 if (af == AF_INET) { 912 struct sockaddr_in si; 913 DWORD len = size; 914 memset(&si, 0, sizeof(si)); 915 si.sin_family = af; 916 memcpy(&si.sin_addr, src, sizeof(si.sin_addr)); 917 status = WSAAddressToString((struct sockaddr*)&si, sizeof(si), NULL, dst, &len); 918 } else if (af == AF_INET6) { 919 struct sockaddr_in6 si6; 920 DWORD len = size; 921 memset(&si6, 0, sizeof(si6)); 922 si6.sin6_family = af; 923 memcpy(&si6.sin6_addr, src, sizeof(si6.sin6_addr)); 924 status = WSAAddressToString((struct sockaddr*)&si6, sizeof(si6), NULL, dst, &len); 925 } 926 927 if (status != SOCKET_ERROR) 928 ret = dst; 929 else 930 errno = ENOSPC; 931 932 WSACleanup(); 933 934 return ret; 935} 936 937int inet_pton(int af, const char *restrict src, void *restrict dst) 938{ 939 INT status = SOCKET_ERROR; 940 WSADATA wsd; 941 int ret = 1; 942 943 if (af != AF_INET && af != AF_INET6) { 944 errno = EAFNOSUPPORT; 945 return -1; 946 } 947 948 WSAStartup(MAKEWORD(2,2), &wsd); 949 950 if (af == AF_INET) { 951 struct sockaddr_in si; 952 INT len = sizeof(si); 953 memset(&si, 0, sizeof(si)); 954 si.sin_family = af; 955 status = WSAStringToAddressA((char*)src, af, NULL, (struct sockaddr*)&si, &len); 956 if (status != SOCKET_ERROR) 957 memcpy(dst, &si.sin_addr, sizeof(si.sin_addr)); 958 } else if (af == AF_INET6) { 959 struct sockaddr_in6 si6; 960 INT len = sizeof(si6); 961 memset(&si6, 0, sizeof(si6)); 962 si6.sin6_family = af; 963 status = WSAStringToAddressA((char*)src, af, NULL, (struct sockaddr*)&si6, &len); 964 if (status != SOCKET_ERROR) 965 memcpy(dst, &si6.sin6_addr, sizeof(si6.sin6_addr)); 966 } 967 968 if (status == SOCKET_ERROR) { 969 errno = ENOSPC; 970 ret = 0; 971 } 972 973 WSACleanup(); 974 975 return ret; 976} 977