1 files changed, 39 insertions, 0 deletions
diff --git a/src/libstddjb/socket_accept4.c b/src/libstddjb/socket_accept4.c
new file mode 100644
index 0000000..e504375
--- /dev/null
+++ b/src/libstddjb/socket_accept4.c
@@ -0,0 +1,39 @@
+/* ISC license. */
+
+#include <skalibs/sysdeps.h>
+#include <skalibs/nonposix.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <errno.h>
+#include <skalibs/uint16.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/socket.h>
+
+int socket_accept4_internal (int s, char *ip, uint16 *port, unsigned int options)
+{
+  struct sockaddr_in sa ;
+  socklen_t dummy = sizeof sa ;
+  register int fd ;
+  do
+#ifdef SKALIBS_HASACCEPT4
+    fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((options & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0)) ;
+#else
+    fd = accept(s, (struct sockaddr *)&sa, &dummy) ;
+#endif
+  while ((fd < 0) && (errno == EINTR)) ;
+  if (fd < 0) return -1 ;
+#ifndef SKALIBS_HASACCEPT4
+  if ((((options & DJBUNIX_FLAG_NB) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
+   || (((options & DJBUNIX_FLAG_COE) ? coe(fd) : uncoe(fd)) < 0))
+  {
+    register int e = errno ;
+    fd_close(fd) ;
+    errno = e ;
+    return -1 ;
+  }
+#endif
+  byte_copy(ip, 4, (char *)&sa.sin_addr.s_addr) ;
+  uint16_unpack_big((char *)&sa.sin_port, port) ;
+  return fd ;
+}