kernel/fs/fifo.cpp

240 	int	open_mode;
246 			open_mode |= O_NONBLOCK;
248 			open_mode &= ~(int)O_NONBLOCK;
661 	int openMode = cookie->open_mode;
890 	cookie->open_mode = openMode;
939 		inode, cookie, *_length, cookie->open_mode);
961 		(cookie->open_mode & O_NONBLOCK) != 0, is_called_via_syscall(),
995 		(cookie->open_mode & O_NONBLOCK) != 0, is_called_via_syscall());
1131 	cookie->open_mode = (cookie->open_mode & ~(O_APPEND | O_NONBLOCK)) | flags;
1148 	return inode->Select(event, sync, cookie->open_mode);
1164 	return inode->Deselect(event, sync, cookie->open_mode);