1 files changed, 33 insertions, 0 deletions
diff --git a/src/sysdeps/tryaccept4.c b/src/sysdeps/tryaccept4.c
new file mode 100644
index 0000000..e27eb1a
--- /dev/null
+++ b/src/sysdeps/tryaccept4.c
@@ -0,0 +1,33 @@
+/* ISC license. */
+
+#undef _POSIX_C_SOURCE
+#undef _XOPEN_SOURCE
+
+#ifndef _XPG4_2
+# define _XPG4_2
+#endif
+
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
+
+#include <sys/types.h>
+
+#if defined(__FreeBSD__)
+# include <sys/param.h>
+#endif
+
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+int main (void)
+{
+  struct sockaddr blah ;
+  socklen_t blahlen = sizeof(blah) ;
+  int fd = open("/dev/null", O_RDONLY | O_NONBLOCK) ;
+  if (fd < 0) return 111 ;
+  if ((accept4(fd, &blah, &blahlen, SOCK_NONBLOCK) < 0) && (errno != ENOTSOCK)) return 1 ;
+  return 0 ;
+}