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path: root/arclib/prom.c
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#include <stdio.h>
#include "arc.h"
#include "prom.h"

int prom_open(char *name, int mode, FILE *stream) {
	/* Translate mode to Arc variant */
	int	amode=OpenReadOnly;
	if (mode == O_RDWR)
		amode=OpenReadWrite;
	return ArcOpen(name, amode, stream);
}

int prom_close(FILE stream) {
	return ArcClose(stream);
}

int prom_seek(FILE stream, long long position, int whence) {
	LARGEINTEGER	apos;
	SEEKMODE	amode=SeekAbsolute;

	/* Translate generic positioning to ARC positioning */
	if (whence == SEEK_CUR)
		amode=SeekRelative;

	/* Translate 64 bit long long to Arc representation */
	apos.HighPart=position>>32;
	apos.LowPart=position&0xffffffff;

	return ArcSeek(stream, &apos, amode);
}

int prom_write(FILE stream, char *string, unsigned long len, unsigned long *rlen) {
	return ArcWrite(stream, string, len, rlen);
}

int prom_read(FILE stream, char *string, unsigned long len, unsigned long *rlen) {
	return ArcRead(stream, string, len, rlen);
}