Function openHostDevFile

pkg/sentry/devices/nvproxy/nvproxy.go:280–302

(ctx context.Context, relpath string, useDevGofer bool, openFlags uint32)

}

func openHostDevFile(ctx context.Context, relpath string, useDevGofer bool, openFlags uint32) (int32, string, error) {
	if useDevGofer {
		devClient := devutil.GoferClientFromContext(ctx)
		if devClient == nil {
			ctx.Warningf("nvproxy: failed to open device gofer %s: devutil.CtxDevGoferClient is not set", relpath)
			return -1, "", linuxerr.ENOENT
		}
		containerName := devClient.ContainerName()
		hostFD, err := devClient.OpenAt(ctx, relpath, openFlags)
		if err != nil {
			ctx.Warningf("nvproxy: failed to open device gofer %s: %v", relpath, err)
			return -1, "", err
		}
		return int32(hostFD), containerName, nil
	}
	abspath := filepath.Join("/dev", relpath)
	hostFD, err := unix.Openat(-1, abspath, int(openFlags&unix.O_ACCMODE|unix.O_NOFOLLOW), 0)
	if err != nil {
		ctx.Warningf("nvproxy: failed to open host %s: %v", abspath, err)
		return -1, "", err
	}
	return int32(hostFD), "", nil
}