add check for abstract sockets (cherry picked from commit 5b657984f4bc5544a8df560adcd224ed243972f1)

1 files changed, 33 insertions, 0 deletions

diff --git a/cmake/modules/CheckForAbstractSockets.c b/cmake/modules/CheckForAbstractSockets.c
new file mode 100644
index 00000000..062b846c
--- /dev/null
+++ b/cmake/modules/CheckForAbstractSockets.c
@@ -0,0 +1,33 @@
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <errno.h>
+
+int main() {
+  int listen_fd;
+  struct sockaddr_un addr;
+
+  listen_fd = socket (PF_UNIX, SOCK_STREAM, 0);
+
+  if (listen_fd < 0)
+    {
+      fprintf (stderr, "socket() failed: %s\n", strerror (errno));
+      exit (1);
+    }
+
+  memset (&addr, '\0', sizeof (addr));
+  addr.sun_family = AF_UNIX;
+  strcpy (addr.sun_path, "X/tmp/dbus-fake-socket-path-used-in-configure-test");
+  addr.sun_path[0] = '\0'; /* this is what makes it abstract */
+
+  if (bind (listen_fd, (struct sockaddr*) &addr, SUN_LEN (&addr)) < 0)
+    {
+      fprintf (stderr, "Abstract socket namespace bind() failed: %s\n",
+                strerror (errno));
+      exit (1);
+    }
+  else
+    exit (0);
+}
\ No newline at end of file