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[Windows] Use `GetFileTime` for `FileAccess` 

Prevents DST from rearranging file times.

(cherry picked from commit 7139f46c9a)
This commit is contained in:
A Thousand Ships 2023-08-16 14:03:34 +02:00 committed by Rémi Verschelde
parent d00e4fbb16
commit 34251cf5b3
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GPG Key ID: C3336907360768E1
1 changed files with 32 additions and 7 deletions
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39
drivers/windows/file_access_windows.cpp
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@ -553,15 +553,40 @@ uint64_t FileAccessWindows::_get_modified_time(const String &p_file) {
file = file.substr(0, file.length() - 1);
}
struct _stat st;
int rv = _wstat((LPCWSTR)(file.utf16().get_data()), &st);
HANDLE handle = CreateFileW((LPCWSTR)(file.utf16().get_data()), GENERIC_READ, FILE_SHARE_READ, nullptr, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, nullptr);
if (rv == 0) {
return st.st_mtime;
} else {
print_verbose("Failed to get modified time for: " + p_file + "");
return 0;
if (handle != INVALID_HANDLE_VALUE) {
FILETIME ft_create, ft_write;
bool status = GetFileTime(handle, &ft_create, nullptr, &ft_write);
CloseHandle(handle);
if (status) {
uint64_t ret = 0;
// If write time is invalid, fallback to creation time.
if (ft_write.dwHighDateTime == 0 && ft_write.dwLowDateTime == 0) {
ret = ft_create.dwHighDateTime;
ret <<= 32;
ret |= ft_create.dwLowDateTime;
} else {
ret = ft_write.dwHighDateTime;
ret <<= 32;
ret |= ft_write.dwLowDateTime;
}
const uint64_t WINDOWS_TICKS_PER_SECOND = 10000000;
const uint64_t TICKS_TO_UNIX_EPOCH = 116444736000000000LL;
if (ret >= TICKS_TO_UNIX_EPOCH) {
return (ret - TICKS_TO_UNIX_EPOCH) / WINDOWS_TICKS_PER_SECOND;
}
}
}
print_verbose("Failed to get modified time for: " + p_file);
return 0;
}
BitField<FileAccess::UnixPermissionFlags> FileAccessWindows::_get_unix_permissions(const String &p_file) {