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Atari Mega Archive 1
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Atari Mega Archive - Volume 1.iso
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gnu
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include
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incl98.zoo
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device.h
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C/C++ Source or Header
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1993-07-10
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/* File to describe user definable devices. */
#ifndef _DEVICE_H
#define _DEVICE_H
#ifndef _COMPILER_H
#include <compiler.h>
#endif
#ifndef _TYPES_H
#include <types.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef long (*devfunc_t)();
struct _device {
char *dosnm, /* name under DOS (e.g. "CON:") */
*unxnm; /* name under UNIX (e.g. "console") */
dev_t dev; /* device number (e.g. 0xffff) */
devfunc_t open, close, read, write, ioctl;
struct _device *next;
};
/*
* Pseudo-device interface stuff. New devices can be hooked into the chain
* that's rooted at __devices. All unx2dos and low level i/o functions use this
* chain in determining whether files are devices or disk files, as does stat().
* The major device number of user-supplied devices must *NOT* be 0 or 0xff,
* both of which are reserved.
*/
#define mkdev(major,minor) ((dev_t)((((major) << 8) & 0xff00)|((minor) & 0x00ff)))
/* major/minor defined in <types.h> */
extern struct _device *__devices;
__EXTERN void _install_device __PROTO((struct _device *d));
__EXTERN struct _device *_dev_fd __PROTO((int fd));
__EXTERN struct _device *_dev_dosname __PROTO((const char *dosnm));
__EXTERN struct _device *_dev_unxname __PROTO((const char *unm));
#ifdef __cplusplus
}
#endif
#endif /* _DEVICE_H */