1 files changed, 52 insertions, 0 deletions
diff --git a/src/v4l2/v4l2_camera_file.cpp b/src/v4l2/v4l2_camera_file.cpp
new file mode 100644
index 00000000..d8fe854b
--- /dev/null
+++ b/src/v4l2/v4l2_camera_file.cpp
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Google Inc.
+ *
+ * V4L2 compatibility camera file information
+ */
+
+#include "v4l2_camera_file.h"
+
+#include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <linux/videodev2.h>
+
+#include "v4l2_camera_proxy.h"
+
+using namespace libcamera;
+
+V4L2CameraFile::V4L2CameraFile(int dirfd, const char *path, int efd,
+			       bool nonBlocking, V4L2CameraProxy *proxy)
+	: proxy_(proxy), nonBlocking_(nonBlocking), efd_(efd),
+	  priority_(V4L2_PRIORITY_DEFAULT)
+{
+	proxy_->open(this);
+
+	if (path[0] != '/') {
+		if (dirfd == AT_FDCWD) {
+			char *cwd = getcwd(nullptr, 0);
+			if (cwd) {
+				description_ = std::string(cwd) + "/";
+				free(cwd);
+			} else {
+				description_ = std::string("(unreachable)/");
+			}
+		} else {
+			description_ = "(dirfd:" + std::to_string(dirfd) + ")/";
+		}
+	}
+
+	description_ += std::string(path) + " (fd:" + std::to_string(efd) + ")";
+}
+
+V4L2CameraFile::~V4L2CameraFile()
+{
+	proxy_->close(this);
+}
+
+const std::string &V4L2CameraFile::description() const
+{
+	return description_;
+}