Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 94 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/mach/hurd/socketpair.c b/REORG.TODO/sysdeps/mach/hurd/socketpair.c
new file mode 100644
index 0000000000..f3cbf8c19b
--- /dev/null
+++ b/REORG.TODO/sysdeps/mach/hurd/socketpair.c
@@ -0,0 +1,94 @@
+/* Copyright (C) 1992-2017 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 <fcntl.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <hurd.h>
+#include <hurd/fd.h>
+#include <hurd/socket.h>
+
+/* Create two new sockets, of type TYPE in domain DOMAIN and using
+   protocol PROTOCOL, which are connected to each other, and put file
+   descriptors for them in FDS[0] and FDS[1].  If PROTOCOL is zero,
+   one will be chosen automatically.  Returns 0 on success, -1 for errors.  */
+int
+__socketpair (int domain, int type, int protocol, int fds[2])
+{
+  error_t err;
+  socket_t server, sock1, sock2;
+  int d1, d2;
+
+  if (fds == NULL)
+    return __hurd_fail (EINVAL);
+
+  /* Find the domain's socket server.  */
+  server = _hurd_socket_server (domain, 0);
+  if (server == MACH_PORT_NULL)
+    return -1;
+
+  /* Create two sockets and connect them together.  */
+
+  err = __socket_create (server, type, protocol, &sock1);
+  if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED
+      || err == MIG_BAD_ID || err == EOPNOTSUPP)
+    {
+      /* On the first use of the socket server during the operation,
+	 allow for the old server port dying.  */
+      server = _hurd_socket_server (domain, 1);
+      if (server == MACH_PORT_NULL)
+	return -1;
+      err = __socket_create (server, type, protocol, &sock1);
+    }
+  if (err)
+    return __hurd_fail (err);
+  if (err = __socket_create (server, type, protocol, &sock2))
+    {
+      __mach_port_deallocate (__mach_task_self (), sock1);
+      return __hurd_fail (err);
+    }
+  if (err = __socket_connect2 (sock1, sock2))
+    {
+      __mach_port_deallocate (__mach_task_self (), sock1);
+      __mach_port_deallocate (__mach_task_self (), sock2);
+      return __hurd_fail (err);
+    }
+
+  /* Put the sockets into file descriptors.  */
+
+  d1 = _hurd_intern_fd (sock1, O_IGNORE_CTTY, 1);
+  if (d1 < 0)
+    {
+      __mach_port_deallocate (__mach_task_self (), sock2);
+      return -1;
+    }
+  d2 = _hurd_intern_fd (sock2, O_IGNORE_CTTY, 1);
+  if (d2 < 0)
+    {
+      err = errno;
+      (void) close (d1);
+      return __hurd_fail (err);
+    }
+
+  fds[0] = d1;
+  fds[1] = d2;
+  return 0;
+}
+
+weak_alias (__socketpair, socketpair)