seatd/common/drm.c

#include <sys/ioctl.h>
#include <sys/types.h>

#ifdef __linux__
#include <sys/sysmacros.h>
#endif

#include "drm.h"

// From libdrm
#define DRM_IOCTL_BASE	      'd'
#define DRM_IO(nr)	      _IO(DRM_IOCTL_BASE, nr)
#define DRM_IOCTL_SET_MASTER  DRM_IO(0x1e)
#define DRM_IOCTL_DROP_MASTER DRM_IO(0x1f)

int drm_set_master(int fd) {
	return ioctl(fd, DRM_IOCTL_SET_MASTER, 0);
}

int drm_drop_master(int fd) {
	return ioctl(fd, DRM_IOCTL_DROP_MASTER, 0);
}

int dev_is_drm(dev_t device) {
	return major(device) == 226;
}