/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include <u.h>#include <libc.h>#include <draw.h> /* * Default version: treat as file name */ Subfont*_getsubfont(Display *d, char *name){	int fd;	Subfont *f; 	fd = open(name, OREAD);			if(fd < 0){		fprint(2, "getsubfont: can't open %s: %r\n", name);		return 0;	}	/*	 * unlock display so i/o happens with display released, unless	 * user is doing his own locking, in which case this could break things.	 * _getsubfont is called only from string.c and stringwidth.c,	 * which are known to be safe to have this done.	 */	if(d && d->locking == 0)		unlockdisplay(d);	f = readsubfont(d, name, fd, d && d->locking==0);	if(d && d->locking == 0)		lockdisplay(d);	if(f == 0)		fprint(2, "getsubfont: can't read %s: %r\n", name);	close(fd);	setmalloctag(f, getcallerpc(&d));	return f;}