libdrm: add prime fd->handle and handle->fd interfaces

[glsdk/libdrm.git] / xf86drm.c

diff --git a/xf86drm.c b/xf86drm.c
index 6ea068f4627fd7ce3ce649f7be05fed56cfd3e0a..2a74c807cc61c8d241eb7c1bc8a4da24f26f9e1a 100644 (file)
--- a/xf86drm.c
+++ b/xf86drm.c
@@ -2542,3 +2542,34 @@ char *drmGetDeviceNameFromFd(int fd)
 
        return strdup(name);
 }
+
+int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd)
+{
+       struct drm_prime_handle args;
+       int ret;
+
+       args.handle = handle;
+       args.flags = flags;
+       ret = drmIoctl(fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
+       if (ret)
+               return ret;
+
+       *prime_fd = args.fd;
+       return 0;
+}
+
+int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle)
+{
+       struct drm_prime_handle args;
+       int ret;
+
+       args.fd = prime_fd;
+       args.flags = 0;
+       ret = drmIoctl(fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &args);
+       if (ret)
+               return ret;
+
+       *handle = args.handle;
+       return 0;
+}
+