libcamera: ipc_unixsocket: Use UniqueFD for a file descriptor

IPCUnixSocket::create() creates two file descriptors. One of
them is stored in IPCUnixSocket and the other is returned to a
caller. This clarifies the ownership using UniqueFD.

Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/include/libcamera/internal/ipc_unixsocket.h b/include/libcamera/internal/ipc_unixsocket.h
index 5010b66a..3963d182 100644
--- a/include/libcamera/internal/ipc_unixsocket.h
+++ b/include/libcamera/internal/ipc_unixsocket.h
@@ -12,6 +12,7 @@
 #include <vector>
 
 #include <libcamera/base/signal.h>
+#include <libcamera/base/unique_fd.h>
 
 namespace libcamera {
 
@@ -28,8 +29,8 @@ public:
 	IPCUnixSocket();
 	~IPCUnixSocket();
 
-	int create();
-	int bind(int fd);
+	UniqueFD create();
+	int bind(UniqueFD fd);
 	void close();
 	bool isBound() const;
 
@@ -49,7 +50,7 @@ private:
 
 	void dataNotifier();
 
-	int fd_;
+	UniqueFD fd_;
 	bool headerReceived_;
 	struct Header header_;
 	EventNotifier *notifier_;