glibc/sysdeps/mach/hurd/pwrite.c
Roland McGrath 8b2134db5e 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.
1999-06-22 23:56:08 +00:00

34 lines
1.4 KiB
C

/* 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)