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#include	"u.h"
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#include <errno.h>
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#include	"lib.h"
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#include	"dat.h"
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#include	"fns.h"
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#include	"error.h"
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#undef pread
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#undef pwrite
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Chan*
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lfdchan(int fd)
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{
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	Chan *c;
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	c = newchan();
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	c->type = devno('L', 0);
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	c->aux = (void*)(uintptr)fd;
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	c->name = newcname("fd");
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	c->mode = ORDWR;
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	c->qid.type = 0;
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	c->qid.path = 0;
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	c->qid.vers = 0;
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	c->dev = 0;
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	c->offset = 0;
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	return c;
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}
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int
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lfdfd(int fd)
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{
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	return newfd(lfdchan(fd));
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}
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static Chan*
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lfdattach(char *x)
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{
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	USED(x);
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	error(Egreg);
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	return nil;
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}
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static Walkqid*
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lfdwalk(Chan *c, Chan *nc, char **name, int nname)
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{
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	USED(c);
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	USED(nc);
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	USED(name);
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	USED(nname);
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	error(Egreg);
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	return nil;
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}
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static int
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lfdstat(Chan *c, uchar *dp, int n)
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{
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	USED(c);
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	USED(dp);
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	USED(n);
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	error(Egreg);
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	return -1;
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}
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static Chan*
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lfdopen(Chan *c, int omode)
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{
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	USED(c);
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	USED(omode);
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	error(Egreg);
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	return nil;
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}
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static void
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lfdclose(Chan *c)
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{
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	close((int)(uintptr)c->aux);
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}
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static long
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lfdread(Chan *c, void *buf, long n, vlong off)
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{
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	USED(off);	/* can't pread on pipes */
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	n = read((int)(uintptr)c->aux, buf, n);
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	if(n < 0){
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		iprint("error %d\n", errno);
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		oserror();
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	}
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	return n;
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}
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static long
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lfdwrite(Chan *c, void *buf, long n, vlong off)
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{
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	USED(off);	/* can't pread on pipes */
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	n = write((int)(uintptr)c->aux, buf, n);
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	if(n < 0){
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		iprint("error %d\n", errno);
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		oserror();
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	}
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	return n;
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}
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Dev lfddevtab = {
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	'L',
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	"lfd",
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	devreset,
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	devinit,
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	devshutdown,
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	lfdattach,
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	lfdwalk,
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	lfdstat,
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	lfdopen,
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	devcreate,
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	lfdclose,
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	lfdread,
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	devbread,
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	lfdwrite,
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	devbwrite,
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	devremove,
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	devwstat,
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};