#include <u.h>
#include <libc.h>
#include <fis.h>

typedef struct Sfisx Sfisx;
struct Sfisx {
	uvlong	sectors;
	uint	secsize;
	char	serial[20];
	char	firmware[8];
	char	model[8];
	uvlong	wwn;
	Sfis;
};

int
idss0(Sfis *f, ushort *id)
{
	uint sw, i;

	if(f->sig>>16 == 0xeb14)
		return 0;
	f->lsectsz = 512;
	f->physshift = 0;
	i = id16(id, 106);

	print("word 106 %.4ux [valid=%d]\n", i, i>>14 == 1);
	print("  multiple log/phys? %d\n", (i& 1<<13) != 0);
	if((i& 1<<13) != 0)
		print("  log/phys %d\n", 1<<(i&7));
	sw = id32(id, 117);
	print("  logical sector size %d [valid=%d]\n", sw*2, (i & 1<<12) != 0);
	return 0;

/*
	if(i >> 14 != 1)
		return f->lsectsz;
	if((sw = id32(id, 117)) >= 256)
		f->lsectsz = sw * 2;
	if(i & 1<<13)
		f->physshift = i & 7;
	return f->lsectsz * (1<<f->physshift);
*/
}

void
main(void)
{
	char buf[1024], buf2[128], *s2;
	ushort *id;
	int n, i, l;
	Sfisx *f;

	s2 = "az> ";
	l = strlen(s2);

	n = read(0, buf, sizeof buf);
	if(n < 512)
		sysfatal("bad ident: %r");

	/* fix my mistake in asking for buffer */
	for(i = 0; i <= n-l; i++)
		if(memcmp(buf+i, s2, l) == 0){
			memcpy(buf+i, buf+i+l, n-(i+l));
			n -= l;
		}

	if(n != 512)
		sysfatal("bad ident: %d bytes\n", n);
//	write(1, buf, 512);

	f = malloc(sizeof *f);
	if(f == nil)
		sysfatal("malloc");
	memset(f, 0, sizeof *f);

	id = (ushort*)buf;
	f->sectors = idfeat(f, id);
	f->secsize = idss(f, id);
	f->wwn = idwwn(f, id);

	idmove(f->serial, id+10, 20);
	idmove(f->firmware, id+23, 8);
	idmove(f->model, id+27, 40);

	print("%,lld %d-byte sectors\n", f->sectors, f->secsize);
	print("serial: %s\n", f->serial);
	print("firmware: %s\n", f->firmware);
	print("model: %s\n", f->model);
	pflag(buf2, buf2+sizeof buf2, f);
	print("pflag: %s\n", buf2);
	idss0(f, id);

	exits("");
}