minix/include/sys/asynchio.h
2005-06-10 15:12:03 +00:00

40 lines
1.1 KiB
C
Executable file

/* asynchio.h - Asynchronous I/O Author: Kees J. Bot
* 26 Jan 1995
* This is just a fake async I/O library to be used for programs
* written for Minix-vmd that must also run under standard Minix.
* This limits the number of ugly #ifdefs somewhat. The programs must
* be restricted to performing just one service, of course.
*/
#ifndef _SYS__ASYNCHIO_H
#define _SYS__ASYNCHIO_H
#ifndef _ANSI_H
#include <ansi.h>
#endif
#include <sys/time.h>
typedef struct {
char state;
char op;
char fd;
char req;
void *data;
ssize_t count;
int errno;
} asynchio_t;
#define ASYN_NONBLOCK 0x01
#define EINPROGRESS EINTR
#define ASYN_INPROGRESS EINPROGRESS
void asyn_init(asynchio_t *_asyn);
ssize_t asyn_read(asynchio_t *_asyn, int _fd, void *_buf, size_t _len);
ssize_t asyn_write(asynchio_t *_asyn, int _fd, const void *_buf, size_t _len);
int asyn_ioctl(asynchio_t *_asyn, int _fd, unsigned long _request, void *_data);
int asyn_wait(asynchio_t *_asyn, int _flags, struct timeval *to);
int asyn_synch(asynchio_t *_asyn, int _fd);
int asyn_close(asynchio_t *_asyn, int _fd);
#endif /* _SYS__ASYNCHIO_H */