Function windows_lock_open

src/daemon/service.c:886–910

}

static HANDLE windows_lock_open(const wchar_t *path) {
    for (unsigned int attempt = 0; attempt < 100; attempt++) {
        HANDLE file = CreateFileW(
            /* Read access is sufficient for LockFileEx. Keeping this handle
             * read-only makes it share-compatible with the brief DACL repair
             * handle, whose FILE_SHARE_READ still admits every live locker. */
            path, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING,
            FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OPEN_REPARSE_POINT, NULL);
        if (file != INVALID_HANDLE_VALUE) {
            LARGE_INTEGER size;
            if (windows_log_handle_valid(file, &size)) {
                (void)SetHandleInformation(file, HANDLE_FLAG_INHERIT, 0);
                return file;
            }
            (void)CloseHandle(file);
            return INVALID_HANDLE_VALUE;
        }
        DWORD error = GetLastError();
        if (error != ERROR_SHARING_VIOLATION && error != ERROR_LOCK_VIOLATION) {
            return INVALID_HANDLE_VALUE;
        }
        Sleep(2);
    }
    return INVALID_HANDLE_VALUE;
}

static bool windows_lock_exclusive(HANDLE file, OVERLAPPED *range) {
    memset(range, 0, sizeof(*range));