1 files changed, 83 insertions, 0 deletions
diff --git a/tests/drmtest.c b/tests/drmtest.c
new file mode 100644
index 00000000..cae99a0c
--- /dev/null
+++ b/tests/drmtest.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright © 2007 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Eric Anholt <eric@anholt.net>
+ *
+ */
+
+#include <fcntl.h>
+#include "drmtest.h"
+
+/** Open the first DRM device we can find, searching up to 16 device nodes */
+int drm_open_any(void)
+{
+	char name[20];
+	int i, fd;
+
+	for (i = 0; i < 16; i++) {
+		sprintf(name, "/dev/dri/card%d", i);
+		fd = open(name, O_RDWR);
+		if (fd != -1)
+			return fd;
+	}
+	abort();
+}
+
+
+/**
+ * Open the first DRM device we can find where we end up being the master.
+ */
+int drm_open_any_master(void)
+{
+	char name[20];
+	int i, fd;
+
+	for (i = 0; i < 16; i++) {
+		drm_client_t client;
+		int ret;
+
+		sprintf(name, "/dev/dri/card%d", i);
+		fd = open(name, O_RDWR);
+		if (fd == -1)
+			continue;
+
+		/* Check that we're the only opener and authed. */
+		client.idx = 0;
+		ret = ioctl(fd, DRM_IOCTL_GET_CLIENT, &client);
+		assert (ret == 0);
+		if (!client.auth) {
+			close(fd);
+			continue;
+		}
+		client.idx = 1;
+		ret = ioctl(fd, DRM_IOCTL_GET_CLIENT, &client);
+		if (ret != -1 || errno != EINVAL) {
+			close(fd);
+			continue;
+		}
+		return fd;
+	}
+	fprintf(stderr, "Couldn't find an un-controlled DRM device\n");
+	abort();
+}
+