Subversion Repositories openrisc_2011-10-31

/* Linux version of pread so we can have a weak_alias */

#include <_ansi.h>

#include <unistd.h>

#include <reent.h>

#include <machine/weakalias.h>

ssize_t

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

     struct _reent *rptr _AND

     int fd _AND

     _PTR buf _AND

     size_t n _AND

     off_t off)

{

  off_t cur_pos;

  _READ_WRITE_RETURN_TYPE num_read;

  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_read = _read_r (rptr, fd, buf, n);

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

    return -1;

  return (ssize_t)num_read;

}

#ifndef _REENT_ONLY

ssize_t

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

     int fd _AND

     _PTR buf _AND

     size_t n _AND

     off_t off)

{

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

}

weak_alias(__libc_pread,pread)

#endif