/usr/lib/ats-anairiats-0.2.5/libc/DATS/unistd.dats is in ats-lang-anairiats 0.2.5-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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(* *)
(* Applied Type System *)
(* *)
(* Hongwei Xi *)
(* *)
(***********************************************************************)
(*
** ATS - Unleashing the Potential of Types!
**
** Copyright (C) 2002-2010 Hongwei Xi, Boston University
**
** All rights reserved
**
** ATS is free software; you can redistribute it and/or modify it under
** the terms of the GNU General Public License as published by the Free
** Software Foundation; either version 2.1, or (at your option) any later
** version.
**
** ATS 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 General Public License
** for more details.
**
** You should have received a copy of the GNU General Public License
** along with ATS; see the file COPYING. If not, please write to the
** Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
** 02110-1301, USA.
*)
(* ****** ****** *)
(* author: Hongwei Xi (hwxi AT cs DOT bu DOT edu) *)
(* ****** ****** *)
#define ATS_DYNLOADFLAG 0 // no dynamic loading
(* ****** ****** *)
%{^
extern char **environ ; // in [unistd.h]
extern void _exit (int status) ; // in [unistd.h]
extern pid_t wait (int*) ; // in [sys/wait.h]
%} // end of [%{^]
(* ****** ****** *)
staload TYPES = "libc/sys/SATS/types.sats"
(* ****** ****** *)
staload "libc/SATS/errno.sats"
staload "libc/SATS/stdio.sats"
staload "libc/SATS/unistd.sats"
(* ****** ****** *)
implement
fork_exn () = pid where {
val pid = fork_err ()
val iserr = $TYPES.int_of_pid(pid) < 0
val () = if iserr then let
val errno = int_of (errno_get ())
val () = perror ("fork")
in
exit_errmsg (errno, "exit(ATS): [fork] failed.\n")
end // end of [val]
} // end of [atslib_fork_exn]
(* ****** ****** *)
%{^
ats_void_type
atslib_fork_exec_cloptr_exn
(ats_ptr_type f_child) {
pid_t pid ;
pid = fork () ;
//
if (pid < 0) {
ats_exit_errmsg (errno, "exit(ATS): [fork] failed.\n") ;
} // end of [if]
//
/* this is the parent */
if (pid > 0) { ATS_FREE (f_child) ; return ; }
//
/* this is the child */
((ats_void_type (*)(ats_clo_ptr_type))((ats_clo_ptr_type)f_child)->closure_fun)(f_child) ;
_exit (0) ; /* no need to flush STDIN, STDOUT and STDERR */
//
return ; /* deadcode */
} /* end of [atslib_fork_exec_cloptr] */
/* ****** ****** */
ats_int_type
atslib_fork_exec_and_wait_cloptr_exn
(ats_ptr_type f_child) {
pid_t pid ;
int status ;
//
pid = fork () ;
//
if (pid < 0) {
ats_exit_errmsg (errno, "exit(ATS): [fork] failed.\n") ;
} // end of [if]
//
if (pid > 0) {
ATS_FREE (f_child) ;
if (wait (&status) < 0) return -1 ;
return status ;
} // end of [if]
//
/* this is the child */
((ats_void_type (*)(ats_clo_ptr_type))((ats_clo_ptr_type)f_child)->closure_fun)(f_child) ;
_exit (0) ; /* no need to flush STDIN, STDOUT and STDERR */
//
return 0 ; /* deadcode */
} /* atslib_fork_exec_and_wait_cloptr_exn */
%} // end of [%{^]
/* ****** ****** */
%{^
#define atslib_GETCWD_BUFSZ 64
ats_ptr_type
atslib_getcwd0 () {
char *buf, *res ;
int sz = atslib_GETCWD_BUFSZ ;
//
buf = (char*)ats_malloc_gc(atslib_GETCWD_BUFSZ) ;
//
// HX: this strategy may not be so attractive;
// an alternative is to use pathconf to get the maximum pathname length
//
while (1) {
res = getcwd (buf, sz) ;
if (!res) {
ATS_FREE (buf) ; sz = sz + sz ; buf = ATS_MALLOC (sz) ;
continue ;
} // end of [if]
break ;
} // end of [while]
//
return buf ;
} // end of [atslib_getcwd0]
%} // end of [%{^]
(* ****** ****** *)
%{^
ats_int_type
atslib_pipe (
ats_ptr_type pfd1, ats_ptr_type pfd2
) {
int err ;
int pfd[2] ;
err = pipe(pfd) ;
if (err==0) {
*(int*)pfd1 = pfd[0] ; *(int*)pfd2 = pfd[1] ;
} // end of [if]
return err ;
} // end of [atslib_pipe]
%} // end of [%{^]
(* ****** ****** *)
%{^
ats_ptr_type
atslib_environ_get_arrsz
(size_t *sizep) {
*sizep = atspre_ptrarr_size (environ) ;
return environ;
} // end of [atslib_environ_get_arrsz]
%} // end of [%{^]
(* ****** ****** *)
(* end of [unistd.dats] *)
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