3 #include <shlwapi.h> /* for PathMatchSpecW() */
6 #include "win32_common.h"
8 #ifdef ENABLE_ERROR_MESSAGES
10 win32_error(DWORD err_code)
14 nchars = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM |
15 FORMAT_MESSAGE_ALLOCATE_BUFFER,
17 (wchar_t*)&buffer, 0, NULL);
19 ERROR("Error printing error message! "
20 "Computer will self-destruct in 3 seconds.");
22 ERROR("Win32 error: %ls", buffer);
26 #endif /* ENABLE_ERROR_MESSAGES */
29 win32_error_to_errno(DWORD err_code)
31 /* This mapping is that used in Cygwin.
32 * Some of these choices are arbitrary. */
34 case ERROR_ACCESS_DENIED:
36 case ERROR_ACTIVE_CONNECTIONS:
38 case ERROR_ALREADY_EXISTS:
40 case ERROR_BAD_DEVICE:
42 case ERROR_BAD_EXE_FORMAT:
44 case ERROR_BAD_NETPATH:
46 case ERROR_BAD_NET_NAME:
48 case ERROR_BAD_NET_RESP:
50 case ERROR_BAD_PATHNAME:
56 case ERROR_BAD_USERNAME:
58 case ERROR_BEGINNING_OF_MEDIA:
60 case ERROR_BROKEN_PIPE:
66 case ERROR_CALL_NOT_IMPLEMENTED:
68 case ERROR_CANNOT_MAKE:
70 case ERROR_CHILD_NOT_COMPLETE:
72 case ERROR_COMMITMENT_LIMIT:
76 case ERROR_DEVICE_DOOR_OPEN:
78 case ERROR_DEVICE_IN_USE:
80 case ERROR_DEVICE_REQUIRES_CLEANING:
84 case ERROR_DIR_NOT_EMPTY:
86 case ERROR_DISK_CORRUPT:
94 case ERROR_EAS_DIDNT_FIT:
97 case ERROR_EAS_NOT_SUPPORTED:
100 case ERROR_EA_LIST_INCONSISTENT:
102 case ERROR_EA_TABLE_FULL:
104 case ERROR_END_OF_MEDIA:
106 case ERROR_EOM_OVERFLOW:
108 case ERROR_EXE_MACHINE_TYPE_MISMATCH:
110 case ERROR_EXE_MARKED_INVALID:
112 case ERROR_FILEMARK_DETECTED:
114 case ERROR_FILENAME_EXCED_RANGE:
116 case ERROR_FILE_CORRUPT:
118 case ERROR_FILE_EXISTS:
120 case ERROR_FILE_INVALID:
122 case ERROR_FILE_NOT_FOUND:
124 case ERROR_HANDLE_DISK_FULL:
127 case ERROR_HANDLE_EOF:
130 case ERROR_INVALID_ADDRESS:
132 case ERROR_INVALID_AT_INTERRUPT_TIME:
134 case ERROR_INVALID_BLOCK_LENGTH:
136 case ERROR_INVALID_DATA:
138 case ERROR_INVALID_DRIVE:
140 case ERROR_INVALID_EA_NAME:
142 case ERROR_INVALID_EXE_SIGNATURE:
145 case ERROR_INVALID_FUNCTION:
148 case ERROR_INVALID_HANDLE:
150 case ERROR_INVALID_NAME:
152 case ERROR_INVALID_PARAMETER:
154 case ERROR_INVALID_SIGNAL_NUMBER:
156 case ERROR_IOPL_NOT_ENABLED:
158 case ERROR_IO_DEVICE:
160 case ERROR_IO_INCOMPLETE:
162 case ERROR_IO_PENDING:
164 case ERROR_LOCK_VIOLATION:
166 case ERROR_MAX_THRDS_REACHED:
168 case ERROR_META_EXPANSION_TOO_LONG:
170 case ERROR_MOD_NOT_FOUND:
173 case ERROR_MORE_DATA:
176 case ERROR_NEGATIVE_SEEK:
178 case ERROR_NETNAME_DELETED:
182 case ERROR_NONE_MAPPED:
184 case ERROR_NONPAGED_SYSTEM_RESOURCES:
187 case ERROR_NOT_CONNECTED:
190 case ERROR_NOT_ENOUGH_MEMORY:
192 case ERROR_NOT_OWNER:
195 case ERROR_NOT_READY:
198 case ERROR_NOT_SAME_DEVICE:
200 case ERROR_NOT_SUPPORTED:
204 case ERROR_NO_DATA_DETECTED:
207 case ERROR_NO_MEDIA_IN_DRIVE:
211 case ERROR_NO_MORE_FILES:
215 case ERROR_NO_MORE_ITEMS:
218 case ERROR_NO_MORE_SEARCH_HANDLES:
220 case ERROR_NO_PROC_SLOTS:
222 case ERROR_NO_SIGNAL_SENT:
224 case ERROR_NO_SYSTEM_RESOURCES:
228 case ERROR_OPEN_FAILED:
230 case ERROR_OPEN_FILES:
232 case ERROR_OUTOFMEMORY:
234 case ERROR_PAGED_SYSTEM_RESOURCES:
236 case ERROR_PAGEFILE_QUOTA:
238 case ERROR_PATH_NOT_FOUND:
240 case ERROR_PIPE_BUSY:
242 case ERROR_PIPE_CONNECTED:
245 case ERROR_PIPE_LISTENING:
247 case ERROR_PIPE_NOT_CONNECTED:
250 case ERROR_POSSIBLE_DEADLOCK:
252 case ERROR_PRIVILEGE_NOT_HELD:
254 case ERROR_PROCESS_ABORTED:
256 case ERROR_PROC_NOT_FOUND:
259 case ERROR_REM_NOT_LIST:
262 case ERROR_SECTOR_NOT_FOUND:
266 case ERROR_SETMARK_DETECTED:
268 case ERROR_SHARING_BUFFER_EXCEEDED:
270 case ERROR_SHARING_VIOLATION:
272 case ERROR_SIGNAL_PENDING:
274 case ERROR_SIGNAL_REFUSED:
277 case ERROR_SXS_CANT_GEN_ACTCTX:
280 case ERROR_THREAD_1_INACTIVE:
282 case ERROR_TOO_MANY_LINKS:
284 case ERROR_TOO_MANY_OPEN_FILES:
286 case ERROR_WAIT_NO_CHILDREN:
288 case ERROR_WORKING_SET_QUOTA:
290 case ERROR_WRITE_PROTECT:
298 set_errno_from_GetLastError()
300 errno = win32_error_to_errno(GetLastError());
303 /* Replacement for POSIX fsync() */
309 h = (HANDLE)_get_osfhandle(fd);
310 if (h == INVALID_HANDLE_VALUE)
312 if (!FlushFileBuffers(h))
316 set_errno_from_GetLastError();
321 /* Use the Win32 API to get the number of processors */
323 win32_get_number_of_processors()
326 GetSystemInfo(&sysinfo);
327 return sysinfo.dwNumberOfProcessors;
330 /* Replacement for POSIX-2008 realpath(). Warning: partial functionality only
331 * (resolved_path must be NULL). Also I highly doubt that GetFullPathName
332 * really does the right thing under all circumstances. */
334 realpath(const wchar_t *path, wchar_t *resolved_path)
338 wimlib_assert(resolved_path == NULL);
340 ret = GetFullPathNameW(path, 0, NULL, NULL);
342 err = GetLastError();
346 resolved_path = TMALLOC(ret);
349 ret = GetFullPathNameW(path, ret, resolved_path, NULL);
351 err = GetLastError();
353 resolved_path = NULL;
358 errno = win32_error_to_errno(err);
360 return resolved_path;
363 /* rename() on Windows fails if the destination file exists. And we need to
364 * make it work on wide characters. Fix it. */
366 win32_rename_replacement(const wchar_t *oldpath, const wchar_t *newpath)
368 if (MoveFileExW(oldpath, newpath, MOVEFILE_REPLACE_EXISTING)) {
371 set_errno_from_GetLastError();
376 /* Replacement for POSIX fnmatch() (partial functionality only) */
378 fnmatch(const wchar_t *pattern, const wchar_t *string, int flags)
380 if (PathMatchSpecW(string, pattern))
386 /* truncate() replacement */
388 win32_truncate_replacement(const wchar_t *path, off_t size)
390 DWORD err = NO_ERROR;
391 LARGE_INTEGER liOffset;
393 HANDLE h = win32_open_existing_file(path, GENERIC_WRITE);
394 if (h == INVALID_HANDLE_VALUE)
397 liOffset.QuadPart = size;
398 if (!SetFilePointerEx(h, liOffset, NULL, FILE_BEGIN))
399 goto fail_close_handle;
401 if (!SetEndOfFile(h))
402 goto fail_close_handle;
407 err = GetLastError();
411 err = GetLastError();
412 errno = win32_error_to_errno(err);
417 /* This really could be replaced with _wcserror_s, but this doesn't seem to
418 * actually be available in MSVCRT.DLL on Windows XP (perhaps it's statically
419 * linked in by Visual Studio...?). */
421 win32_strerror_r_replacement(int errnum, wchar_t *buf, size_t buflen)
423 static pthread_mutex_t strerror_lock = PTHREAD_MUTEX_INITIALIZER;
425 pthread_mutex_lock(&strerror_lock);
426 mbstowcs(buf, strerror(errnum), buflen);
427 buf[buflen - 1] = '\0';
428 pthread_mutex_unlock(&strerror_lock);
433 do_pread_or_pwrite(int fd, void *buf, size_t count, off_t offset,
437 LARGE_INTEGER orig_offset;
438 DWORD bytes_read_or_written;
439 LARGE_INTEGER relative_offset;
440 OVERLAPPED overlapped;
443 wimlib_assert(count <= 0xffffffff);
445 h = (HANDLE)_get_osfhandle(fd);
446 if (h == INVALID_HANDLE_VALUE)
449 /* Get original position */
450 relative_offset.QuadPart = 0;
451 if (!SetFilePointerEx(h, relative_offset, &orig_offset, FILE_CURRENT))
454 memset(&overlapped, 0, sizeof(overlapped));
455 overlapped.Offset = offset;
456 overlapped.OffsetHigh = offset >> 32;
458 /* Do the read or write at the specified offset */
460 bret = WriteFile(h, buf, count, &bytes_read_or_written, &overlapped);
462 bret = ReadFile(h, buf, count, &bytes_read_or_written, &overlapped);
466 /* Restore the original position */
467 if (!SetFilePointerEx(h, orig_offset, NULL, FILE_BEGIN))
470 return bytes_read_or_written;
472 set_errno_from_GetLastError();
477 /* Dumb Windows implementation of pread(). It temporarily changes the file
478 * offset, so it is not safe to use with readers/writers on the same file
481 win32_pread(int fd, void *buf, size_t count, off_t offset)
483 return do_pread_or_pwrite(fd, buf, count, offset, false);
486 /* Dumb Windows implementation of pwrite(). It temporarily changes the file
487 * offset, so it is not safe to use with readers/writers on the same file
490 win32_pwrite(int fd, const void *buf, size_t count, off_t offset)
492 return do_pread_or_pwrite(fd, (void*)buf, count, offset, true);
495 /* Dumb Windows implementation of writev(). It writes the vectors one at a
498 win32_writev(int fd, const struct iovec *iov, int iovcnt)
500 ssize_t total_bytes_written = 0;
506 for (int i = 0; i < iovcnt; i++) {
507 ssize_t bytes_written;
509 bytes_written = write(fd, iov[i].iov_base, iov[i].iov_len);
510 if (bytes_written >= 0)
511 total_bytes_written += bytes_written;
512 if (bytes_written != iov[i].iov_len) {
513 if (total_bytes_written == 0)
514 total_bytes_written = -1;
518 return total_bytes_written;
521 /* Given a path, which may not yet exist, get a set of flags that describe the
522 * features of the volume the path is on. */
524 win32_get_vol_flags(const wchar_t *path, unsigned *vol_flags_ret)
530 if (path[0] != L'\0' && path[0] != L'\\' &&
531 path[0] != L'/' && path[1] == L':')
533 /* Path starts with a drive letter; use it. */
534 volume = alloca(4 * sizeof(wchar_t));
540 /* Path does not start with a drive letter; use the volume of
541 * the current working directory. */
544 bret = GetVolumeInformationW(volume, /* lpRootPathName */
545 NULL, /* lpVolumeNameBuffer */
546 0, /* nVolumeNameSize */
547 NULL, /* lpVolumeSerialNumber */
548 NULL, /* lpMaximumComponentLength */
549 &vol_flags, /* lpFileSystemFlags */
550 NULL, /* lpFileSystemNameBuffer */
551 0); /* nFileSystemNameSize */
553 DWORD err = GetLastError();
554 WARNING("Failed to get volume information for path \"%ls\"", path);
556 vol_flags = 0xffffffff;
559 DEBUG("using vol_flags = %x", vol_flags);
560 *vol_flags_ret = vol_flags;
565 win32_open_existing_file(const wchar_t *path, DWORD dwDesiredAccess)
567 return CreateFileW(path,
570 NULL, /* lpSecurityAttributes */
572 FILE_FLAG_BACKUP_SEMANTICS |
573 FILE_FLAG_OPEN_REPARSE_POINT,
574 NULL /* hTemplateFile */);
578 win32_open_file_data_only(const wchar_t *path)
580 return win32_open_existing_file(path, FILE_READ_DATA);
583 /* Pointers to functions that are not available on all targetted versions of
584 * Windows (XP and later). NOTE: The WINAPI annotations seem to be important; I
585 * assume it specifies a certain calling convention. */
587 /* Vista and later */
588 HANDLE (WINAPI *win32func_FindFirstStreamW)(LPCWSTR lpFileName,
589 STREAM_INFO_LEVELS InfoLevel,
590 LPVOID lpFindStreamData,
591 DWORD dwFlags) = NULL;
593 /* Vista and later */
594 BOOL (WINAPI *win32func_FindNextStreamW)(HANDLE hFindStream,
595 LPVOID lpFindStreamData) = NULL;
597 static HMODULE hKernel32 = NULL;
599 /* Try to dynamically load some functions */
605 if (hKernel32 == NULL) {
606 DEBUG("Loading Kernel32.dll");
607 hKernel32 = LoadLibraryW(L"Kernel32.dll");
608 if (hKernel32 == NULL) {
609 err = GetLastError();
610 WARNING("Can't load Kernel32.dll");
616 DEBUG("Looking for FindFirstStreamW");
617 win32func_FindFirstStreamW = (void*)GetProcAddress(hKernel32, "FindFirstStreamW");
618 if (!win32func_FindFirstStreamW) {
619 WARNING("Could not find function FindFirstStreamW() in Kernel32.dll!");
620 WARNING("Capturing alternate data streams will not be supported.");
624 DEBUG("Looking for FindNextStreamW");
625 win32func_FindNextStreamW = (void*)GetProcAddress(hKernel32, "FindNextStreamW");
626 if (!win32func_FindNextStreamW) {
627 WARNING("Could not find function FindNextStreamW() in Kernel32.dll!");
628 WARNING("Capturing alternate data streams will not be supported.");
629 win32func_FindFirstStreamW = NULL;
634 win32_global_cleanup()
636 if (hKernel32 != NULL) {
637 DEBUG("Closing Kernel32.dll");
638 FreeLibrary(hKernel32);
643 #endif /* __WIN32__ */