#include <u.h>#include <libc.h>#include <libg.h> Subfont*subfalloc(int n, int height, int ascent, Fontchar *info, Bitmap *b, ulong q1, ulong q2){	int id, i;	Subfont *f;	uchar *buf, *p, xbuf[3]; 	bneed(0);	/* flush so we can get allocs right */	buf = bneed(15+6*(n+1));	buf[0] = 'k';	BPSHORT(buf+1, n);	buf[3] = height;	buf[4] = ascent;	BPSHORT(buf+5, b->id);	BPLONG(buf+7, q1);	BPLONG(buf+11, q2);	for(p=buf+15,i=0; i<=n; i++,info++,p+=6){		BPSHORT(p, info->x);		p[2] = info->top;		p[3] = info->bottom;		p[4] = info->left;		p[5] = info->width;	}	info -= n+1;	if(!bwrite())		return 0; /* non-fatal out of fonts case */	if(read(bitbltfd, xbuf, 3)!=3 || xbuf[0]!='K')		berror("falloc read");	id = xbuf[1] | (xbuf[2]<<8);	f = malloc(sizeof(Subfont));	if(f == 0){	/* oh bother */		xbuf[0] = 'g';		write(bitbltfd, xbuf, 3);		berror("falloc malloc");	}	f->n = n;	f->height = height;	f->ascent = ascent;	f->info = info;	f->id = id;	free(b);	return f;} voidsubffree(Subfont *f){	uchar *buf; 	buf = bneed(3);	buf[0] = 'g';	buf[1] = f->id;	buf[2] = f->id>>8;	if(f->info)		free(f->info);	/* note: f->info must have been malloc'ed! */	free(f);	bneed(0);	/* make sure resources are freed */}