1999-06-23 Roland McGrath <roland@baalperazim.frob.com>

	* sysdeps/mach/hurd/read.c (__libc_read): Just call __pread with
	OFFSET argument of (off_t) -1.
	* sysdeps/mach/hurd/write.c (__libc_write): Just call __pwrite with
	OFFSET argument of (off_t) -1.

	* sysdeps/mach/hurd/pwrite.c: New file.
	* sysdeps/mach/hurd/pread.c: New file.

	* hurd/fd-read.c (_hurd_fd_read): Take new parameter OFFSET and
	pass it in the RPC instead of always -1.
	* hurd/fd-write.c (_hurd_fd_write): Likewise.
	* hurd/hurd/fd.h: Update decls.

2 files changed, 64 insertions, 0 deletions

diff --git a/sysdeps/mach/hurd/pread.c b/sysdeps/mach/hurd/pread.c
new file mode 100644
index 0000000000..6deb969506
--- /dev/null
+++ b/sysdeps/mach/hurd/pread.c
@@ -0,0 +1,31 @@
+/* Read block from given position in file without changing file pointer.
+   Hurd version.
+   Copyright (C) 1999 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
+__pread (int fd, void *buf, size_t nbyte, off_t offset)
+{
+  error_t err = HURD_FD_USE (fd, _hurd_fd_read (descriptor,
+						buf, &nbytes, offset));
+  return err ? __hurd_dfail (fd, err) : nbytes;
+}
+weak_alias (__pread, pread)
diff --git a/sysdeps/mach/hurd/pwrite.c b/sysdeps/mach/hurd/pwrite.c
new file mode 100644
index 0000000000..405c1525e7
--- /dev/null
+++ b/sysdeps/mach/hurd/pwrite.c
@@ -0,0 +1,33 @@
+/* Write block at given position in file without changing file pointer.
+   Hurd version.
+   Copyright (C) 1999 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>
+
+/* Write NBYTES of BUF to FD at given position OFFSET without changing
+   the file position.  Return the number written, or -1.  */
+ssize_t
+__pwrite (int fd, const void *buf, size_t nbytes, off_t offset)
+{
+  error_t err = HURD_FD_USE (fd, _hurd_fd_write (descriptor,
+						 buf, &nbytes, offset));
+  return err ? __hurd_dfail (fd, err) : nbytes;
+}
+weak_alias (__pwrite, pwrite)