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fd-write.c

/* _hurd_fd_write -- write to a file descriptor; handles job control et al.
   Copyright (C) 1993,94,95,97,99,2002 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <errno.h>
#include <unistd.h>
#include <hurd.h>
#include <hurd/fd.h>

error_t
_hurd_fd_write (struct hurd_fd *fd,
            const void *buf, size_t *nbytes, loff_t offset)
{
  error_t err;
  mach_msg_type_number_t wrote;

  error_t writefd (io_t port)
    {
      return __io_write (port, buf, *nbytes, offset, &wrote);
    }

  err = HURD_FD_PORT_USE (fd, _hurd_ctty_output (port, ctty, writefd));

  if (! err)
    *nbytes = wrote;

  return err;
}

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