qemu/ui/udmabuf.c
Philippe Mathieu-Daudé b956577af1 ui/console: Restrict udmabuf_fd() to Linux
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210823100454.615816-3-philmd@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-08-31 14:31:43 +02:00

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;
}