1 files changed, 103 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/mach/hurd/recvfrom.c b/REORG.TODO/sysdeps/mach/hurd/recvfrom.c
new file mode 100644
index 0000000000..4b909174ff
--- /dev/null
+++ b/REORG.TODO/sysdeps/mach/hurd/recvfrom.c
@@ -0,0 +1,103 @@
+/* Copyright (C) 1994-2017 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <hurd.h>
+#include <hurd/fd.h>
+#include <hurd/socket.h>
+
+/* Read N bytes into BUF through socket FD.
+   If ADDR is not NULL, fill in *ADDR_LEN bytes of it with tha address of
+   the sender, and store the actual size of the address in *ADDR_LEN.
+   Returns the number of bytes read or -1 for errors.  */
+ssize_t
+__recvfrom (int fd, void *buf, size_t n, int flags, __SOCKADDR_ARG addrarg,
+	    socklen_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 = 0;
+  char *cdata = NULL;
+  mach_msg_type_number_t clen = 0;
+  struct sockaddr *addr = addrarg.__sockaddr__;
+
+  if (err = HURD_DPORT_USE (fd, __socket_recv (port, &addrport,
+					       flags, &bufp, &nread,
+					       &ports, &nports,
+					       &cdata, &clen,
+					       &flags,
+					       n)))
+    return __hurd_sockfail (fd, flags, err);
+
+  /* Get address data for the returned address port if requested.  */
+  if (addr != NULL && addrport != MACH_PORT_NULL)
+    {
+      char *buf = (char *) addr;
+      mach_msg_type_number_t buflen = *addr_len;
+      int type;
+
+      err = __socket_whatis_address (addrport, &type, &buf, &buflen);
+      if (err == EOPNOTSUPP)
+	/* If the protocol server can't tell us the address, just return a
+	   zero-length one.  */
+	{
+	  buf = (char *)addr;
+	  buflen = 0;
+	  err = 0;
+	}
+
+      if (err)
+	{
+	  __mach_port_deallocate (__mach_task_self (), addrport);
+	  return __hurd_sockfail (fd, flags, err);
+	}
+
+      if (*addr_len > buflen)
+	*addr_len = buflen;
+
+      if (buf != (char *) addr)
+	{
+	  memcpy (addr, buf, *addr_len);
+	  __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen);
+	}
+
+      if (buflen > 0)
+	addr->sa_family = type;
+    }
+  else if (addr_len != NULL)
+    *addr_len = 0;
+
+  __mach_port_deallocate (__mach_task_self (), addrport);
+
+  /* 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;
+}
+
+weak_alias (__recvfrom, recvfrom)