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/* Linux version of pwrite so we can have a weak alias */

#include <_ansi.h>

#include <unistd.h>

#include <reent.h>

#include <machine/weakalias.h>

ssize_t

_DEFUN (_pwrite_r, (rptr, fd, buf, n, off),

     struct _reent *rptr _AND

     int fd _AND

     _CONST _PTR buf _AND

     size_t n _AND

     off_t off)

{

  off_t cur_pos;

  _READ_WRITE_RETURN_TYPE num_written;

  if ((cur_pos = _lseek_r (rptr, fd, 0, SEEK_CUR)) == (off_t)-1)

    return -1;

  if (_lseek_r (rptr, fd, off, SEEK_SET) == (off_t)-1)

    return -1;

  num_written = _write_r (rptr, fd, buf, n);

  if (_lseek_r (rptr, fd, cur_pos, SEEK_SET) == (off_t)-1)

    return -1;

  return (ssize_t)num_written;

}

#ifndef _REENT_ONLY

ssize_t

_DEFUN (__libc_pwrite, (fd, buf, n, off),

     int fd _AND

     _CONST _PTR buf _AND

     size_t n _AND

     off_t off)

{

  return _pwrite_r (_REENT, fd, buf, n, off);

}

weak_alias(__libc_pwrite,pwrite)

#endif