From 6c258a7ae5dbc70e30cf14950d64f56d5c1a3fc2 Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Mon, 5 Jun 2023 12:04:39 +0200
Subject: [PATCH] server: add wl_display_remove_socket_fd()

Undoes wl_display_add_socket_fd(). Useful for protocols such as:
https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/68

Signed-off-by: Simon Ser <contact@emersion.fr>
---
 src/wayland-server-core.h |  3 +++
 src/wayland-server.c      | 31 +++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/src/wayland-server-core.h b/src/wayland-server-core.h
index df958211..2cb55b0b 100644
--- a/src/wayland-server-core.h
+++ b/src/wayland-server-core.h
@@ -205,6 +205,9 @@ wl_display_add_socket_auto(struct wl_display *display);
 int
 wl_display_add_socket_fd(struct wl_display *display, int sock_fd);
 
+int
+wl_display_remove_socket_fd(struct wl_display *display, int sock_fd);
+
 void
 wl_display_terminate(struct wl_display *display);
 
diff --git a/src/wayland-server.c b/src/wayland-server.c
index 2edf621a..4d86667c 100644
--- a/src/wayland-server.c
+++ b/src/wayland-server.c
@@ -1777,6 +1777,37 @@ wl_display_add_socket_fd(struct wl_display *display, int sock_fd)
 	return 0;
 }
 
+/** Remove a socket fd from the Wayland display.
+ *
+ * \param display Wayland display to which the socket should be added.
+ * \param sock_fd The socket file descriptor to be removed
+ * \return 0 if success. -1 if failed.
+ *
+ * Remove a socket fd previously added via wl_display_add_socket_fd().
+ *
+ * \memberof wl_display
+ * \since 1.22.90
+ */
+WL_EXPORT int
+wl_display_remove_socket_fd(struct wl_display *display, int sock_fd)
+{
+	struct wl_socket *s;
+	bool found;
+
+	found = false;
+	wl_list_for_each(s, &display->socket_list, link) {
+		if (s->fd == sock_fd) {
+			found = true;
+			break;
+		}
+	}
+	if (!found)
+		return -1;
+
+	wl_socket_destroy(s);
+	return 0;
+}
+
 /** Add a socket to Wayland display for the clients to connect.
  *
  * \param display Wayland display to which the socket should be added.