qemu/ui/udmabuf.c

30 lines
588 B
C

/*
* udmabuf helper functions.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "ui/console.h"
#include <fcntl.h>
#include <sys/ioctl.h>
int udmabuf_fd(void)
{
static bool first = true;
static int udmabuf;
if (!first) {
return udmabuf;
}
first = false;
udmabuf = open("/dev/udmabuf", O_RDWR);
if (udmabuf < 0) {
warn_report("open /dev/udmabuf: %s", strerror(errno));
}
return udmabuf;
}