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/******************************************************************************
*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Copyright (C) 2005 Rusty Russell IBM Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, version 2 of the
* License.
*/
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <xen/sys/xenbus.h>
#include "xenstored_core.h"
evtchn_port_t xenbus_evtchn(void)
{
int fd;
evtchn_port_t port;
fd = open("/dev/xen/xenbus", O_RDONLY);
if (fd == -1)
return -1;
port = ioctl(fd, IOCTL_XENBUS_XENSTORE_EVTCHN);
close(fd);
return port;
}
void *xenbus_map(void)
{
int fd;
void *addr;
fd = open("/dev/xen/xenbus", O_RDWR);
if (fd == -1)
return NULL;
addr = mmap(NULL, getpagesize(), PROT_READ|PROT_WRITE,
MAP_SHARED, fd, 0);
if (addr == MAP_FAILED)
addr = NULL;
close(fd);
return addr;
}
void xenbus_notify_running(void)
{
int fd;
fd = open("/dev/xen/xenbus", O_RDONLY);
(void) ioctl(fd, IOCTL_XENBUS_NOTIFY_UP);
close(fd);
}
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