#ifndef _NTIOAPI_H

/**
 * All operations on the file are performed synchronously.
 * Waits in the system to synchronize I/O queuing and completion are not subject to alerts.
 * This flag also causes the I/O system to maintain the file position context.
 * If this flag is set, the DesiredAccess SYNCHRONIZE flag also must be set.
 */
#define FILE_SYNCHRONOUS_IO_NONALERT        0x00000020

#endif
View code on GitHub