| 1 | /** |
| 2 | * This file has no copyright assigned and is placed in the Public Domain. |
| 3 | * This file is part of the mingw-w64 runtime package. |
| 4 | * No warranty is given; refer to the file DISCLAIMER.PD within this package. |
| 5 | */ |
| 6 | |
| 7 | #include <sys/stat.h> |
| 8 | #include <string.h> |
| 9 | #include <wchar.h> |
| 10 | #include <errno.h> |
| 11 | #include <fcntl.h> |
| 12 | #include <windows.h> |
| 13 | #include "__mingw_fix_stat.h" |
| 14 | |
| 15 | #ifdef MINGW_FIX_STAT_IS_WIDE |
| 16 | int __mingw_fix_wstat_fallback_fd(int ret, const wchar_t *filename, unsigned short mode) |
| 17 | #else |
| 18 | int __mingw_fix_stat_fallback_fd(int ret, const char *filename, unsigned short mode) |
| 19 | #endif |
| 20 | { |
| 21 | int fd = -1; |
| 22 | |
| 23 | /* |
| 24 | * CRT _stat does not handle paths with ? and * characters and returns ENOENT. |
| 25 | * This prevents _stat from working on paths like \\?\C:\foo.txt. |
| 26 | * CRT _stat incorrectly sets S_IFREG for pipe and char devices. |
| 27 | * For these cases open specified filename and return its fd which will be passed to CRT fstat() by caller. |
| 28 | */ |
| 29 | if ((ret < 0 && errno == ENOENT && __MINGW_STR_PBRK((filename), "?*")) || (ret == 0 && S_ISREG(mode))) { |
| 30 | HANDLE handle = __MINGW_CREATE_FILE((filename), FILE_READ_ATTRIBUTES, FILE_SHARE_VALID_FLAGS, NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL); |
| 31 | if (handle != NULL && handle != INVALID_HANDLE_VALUE) { |
| 32 | /* Open filename and return fd if CRT _stat failed or if the file is not regular disk file. */ |
| 33 | if (ret < 0 || GetFileType(handle) != FILE_TYPE_DISK) { |
| 34 | int saved_errno = errno; |
| 35 | fd = _open_osfhandle((intptr_t)handle, O_RDONLY); |
| 36 | errno = saved_errno; |
| 37 | } |
| 38 | if (fd < 0) |
| 39 | CloseHandle(handle); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | return fd; |
| 44 | } |