misc/bsd-compat.c

   1 /* BSD-compatible versions of functions where BSD and POSIX.1 conflict.
   2
   3 Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
   4 This file is part of the GNU C Library.
   5
   6 The GNU C Library is free software; you can redistribute it and/or
   7 modify it under the terms of the GNU Library General Public License as
   8 published by the Free Software Foundation; either version 2 of the
   9 License, or (at your option) any later version.
  10
  11 The GNU C Library is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 Library General Public License for more details.
  15
  16 You should have received a copy of the GNU Library General Public
  17 License along with the GNU C Library; see the file COPYING.LIB.  If
  18 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  19 Cambridge, MA 02139, USA.  */
  20
  21 #define _BSD_SOURCE
  22
  23 #include <ansidecl.h>
  24 #include <sys/types.h>
  25 #include <unistd.h>
  26 #include <gnu-stabs.h>
  27 #include <limits.h>
  28 #include <setjmp.h>
  29
  30 #undef  getpgrp
  31 function_alias(getpgrp, __getpgrp, pid_t, (pid),
  32                DEFUN(getpgrp, (pid), pid_t pid))
  33
  34 /* These entry points allow for things compiled for another C library
  35    that want the BSD-compatible definitions.  (Of course, their jmp_buf
  36    must be big enough.)  */
  37
  38 #undef  longjmp
  39 #ifdef __STDC__
  40 #define void __NORETURN void
  41 #endif
  42 function_alias_void(longjmp, siglongjmp, (env, val),
  43                     DEFUN(longjmp, (env, val), CONST jmp_buf env AND int val))
  44
  45 #undef  setjmp
  46 int
  47 DEFUN(setjmp, (env), jmp_buf env)
  48 {
  49   return sigsetjmp (env, 1);
  50 }