git: purgatorio

ref: babf901b4a508c3ec5d1f89655f10377bbdf9637
dir: /os/port/nocache.c/

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#include	"u.h"
#include	"../port/lib.h"
#include	"mem.h"
#include	"dat.h"
#include	"fns.h"
#include	"../port/error.h"

/*
 * stubs when no devmnt cache
 */
void
cinit(void)
{
}

void
copen(Chan *c)
{
	c->flag &= ~CCACHE;
}

int
cread(Chan *c, uchar *b, int n, vlong off)
{
	USED(c);
	USED(b);
	USED(n);
	USED(off);
	return 0;
}

void
cwrite(Chan *c, uchar *buf, int n, vlong off)
{
	USED(c);
	USED(buf);
	USED(n);
	USED(off);
}

void
cupdate(Chan *c, uchar *buf,  int n, vlong off)
{
	USED(c);
	USED(buf);
	USED(n);
	USED(off);
}