jehanne/sys/src/lib/draw/newwindow.c

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/*
* 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.
*/
2018-01-06 01:08:25 +01:00
/* Portions of this file are Copyright (C) 2015-2018 Giacomo Tesio <giacomo@tesio.it>
* See /doc/license/gpl-2.0.txt for details about the licensing.
*/
#include <u.h>
#include <lib9.h>
#include <envvars.h>
#include <draw.h>
/* Connect us to new window, if possible */
int
newwindow(char *str)
{
int fd;
char *wsys;
char buf[256];
wsys = getenv(ENV_WSYS);
if(wsys == nil)
return -1;
fd = open(wsys, ORDWR);
free(wsys);
if(fd < 0)
return -1;
rfork(RFNAMEG);
if(str)
snprint(buf, sizeof buf, "new %s", str);
else
strcpy(buf, "new");
return mount(fd, -1, "/dev", MBEFORE, buf, '9');
}