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/* 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
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