* sysdeps/mach/hurd/fork.c (LOSE): Put `goto lose' in dead code

	so the label is not considered unused.

	* sysdeps/mach/hurd/pwrite64.c: New file.
	* sysdeps/mach/hurd/pread64.c: New file.

	* sysdeps/mach/hurd/pread.c
	(__libc_pread): Define this name, with __pread as an alias.
	* sysdeps/mach/hurd/pwrite.c
	(__libc_pwrite): Define this name, with __pwrite as an alias.

	Implement POSIX "shared memory objects" as regular
	files residing in the /var/run/shm/ directory.
	This works on any system that supports _POSIX_MAPPED_FILES,
	to make it also support _POSIX_SHARED_MEMORY_OBJECTS.
	* sysdeps/posix/shm_open.c: New file.
	* sysdeps/posix/shm_unlink.c: New file.
	* sysdeps/mach/hurd/bits/posix_opt.h
	(_POSIX_SHARED_MEMORY_OBJECTS): Define it.

	* rt/aio_notify.c (__aio_notify_only) [! _POSIX_REALTIME_SIGNALS]:
	Use raise instead of __aio_sigqueue.

1 files changed, 43 insertions, 0 deletions

diff --git a/sysdeps/mach/hurd/pwrite64.c b/sysdeps/mach/hurd/pwrite64.c
new file mode 100644
index 0000000000..7cca3d8172
--- /dev/null
+++ b/sysdeps/mach/hurd/pwrite64.c
@@ -0,0 +1,43 @@
+/* Write block to given position in file without changing file pointer.
+   Hurd version.
+   Copyright (C) 2001 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <unistd.h>
+
+ssize_t
+__libc_pwrite64 (int fd, const void *buf, size_t nbyte, off64_t offset)
+{
+  /* XXX We don't really support large files on the Hurd.  So if
+     OFFSET doesn't fit in an `off_t', we'll return `-1' and set
+     errno.  EOVERFLOW probably isn't the right error value, but seems
+     appropriate here.  */
+  if ((off_t) offset != offset)
+    {
+      __set_errno (EOVERFLOW);
+      return -1;
+    }
+
+  return __libc_pwrite (fd, buf, nbyte, offset);
+}
+
+#ifndef __libc_pwrite64
+weak_alias (__libc_pwrite64, __pwrite64)
+weak_alias (__libc_pwrite64, pwrite64)
+#endif