1 files changed, 85 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/recvfrom.c b/sysdeps/mach/hurd/recvfrom.c
new file mode 100644
index 0000000000..09d45c7cc8
--- /dev/null
+++ b/sysdeps/mach/hurd/recvfrom.c
@@ -0,0 +1,85 @@
+/* Copyright (C) 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <sys/socket.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+#include <hurd/socket.h>
+#include <string.h>
+
+/* Read N bytes into BUF through socket FD from peer
+   at address ADDR (which is ADDR_LEN bytes long).
+   Returns the number read or -1 for errors.  */
+int
+DEFUN(recvfrom, (fd, buf, n, flags, addr, addr_len),
+      int fd AND PTR buf AND size_t n AND int flags AND
+      struct sockaddr *addr AND size_t *addr_len)
+{
+  error_t err;
+  mach_port_t addrport;
+  char *bufp = buf;
+  mach_msg_type_number_t nread = n;
+  mach_port_t *ports;
+  mach_msg_type_number_t nports;
+  char *cdata = NULL;
+  mach_msg_type_number_t clen = 0;
+
+  if (err = HURD_DPORT_USE (fd, __socket_recv (port, &addrport,
+					       flags, &bufp, &nread,
+					       &ports, &nports,
+					       &cdata, &clen,
+					       &flags,
+					       n)))
+    return __hurd_dfail (fd, err);
+
+  /* Get address data for the returned address port.  */
+  {
+    char *buf = (char *) addr;
+    mach_msg_type_number_t buflen = *addr_len;
+    int type;
+
+    err = __socket_whatis_address (addrport, &type, &buf, &buflen);
+    __mach_port_deallocate (__mach_task_self (), addrport);
+    if (err)
+      return __hurd_dfail (fd, err);
+
+    if (buf != (char *) addr)
+      {
+	if (*addr_len < buflen)
+	  *addr_len = buflen;
+	memcpy (addr, buf, *addr_len);
+	__vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen);
+      }
+
+    addr->sa_family = type;
+  }
+
+  /* Toss control data; we don't care.  */
+  __vm_deallocate (__mach_task_self (), (vm_address_t) cdata, clen);
+
+  if (bufp != buf)
+    {
+      memcpy (buf, bufp, nread);
+      __vm_deallocate (__mach_task_self (), (vm_address_t) bufp, nread);
+    }
+
+  return nread;
+}
+