#include <sys/types.h>
+/* In GNU, read and write are bits (unlike BSD). */
+#ifdef __USE_GNU
+#define O_READ O_RDONLY /* Open for reading. */
+#define O_WRITE O_WRONLY /* Open for writing. */
+#define O_NORW 0 /* Open without R/W access. */
+#endif
/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
located on an ext2 file system */
#define O_ACCMODE 0003
#define O_APPEND 00010
#define O_NDELAY O_NONBLOCK
#define O_SYNC 040000
-#define FASYNC 020000 /* fcntl, for BSD compatibility */
+#define O_FSYNC O_SYNC
+#define O_ASYNC 020000 /* fcntl, for BSD compatibility */
#define F_DUPFD 0 /* dup */
#define F_GETFD 1 /* get f_flags */
#ifdef __USE_BSD
#define FAPPEND O_APPEND
#define FFSYNC O_FSYNC
+#define FASYNC O_ASYNC
#define FNONBLOCK O_NONBLOCK
#define FNDELAY O_NDELAY
#endif /* Use BSD. */