/* Generic wait.h */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2007 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
#ifndef _AC_WAIT_H
#define _AC_WAIT_H
#include <sys/types.h>
-#if HAVE_SYS_WAIT_H
+
+#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
+
+#define LDAP_HI(s) (((s) >> 8) & 0377)
+#define LDAP_LO(s) ((s) & 0377)
+
+/* These should work on non-POSIX UNIX platforms,
+ all bets on off on non-POSIX non-UNIX platforms... */
+#ifndef WIFEXITED
+# define WIFEXITED(s) (LDAP_LO(s) == 0)
+#endif
#ifndef WEXITSTATUS
-# define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
+# define WEXITSTATUS(s) LDAP_HI(s)
#endif
-#ifndef WIFEXITED
-# define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
+#ifndef WIFSIGNALED
+# define WIFSIGNALED(s) (LDAP_LO(s) > 0 && LDAP_HI(s) == 0)
+#endif
+#ifndef WTERMSIG
+# define WTERMSIG(s) (LDAP_LO(s) & 0177)
+#endif
+#ifndef WIFSTOPPED
+# define WIFSTOPPED(s) (LDAP_LO(s) == 0177 && LDAP_HI(s) != 0)
+#endif
+#ifndef WSTOPSIG
+# define WSTOPSIG(s) LDAP_HI(s)
+#endif
+
+#ifdef WCONTINUED
+# define WAIT_FLAGS ( WNOHANG | WUNTRACED | WCONTINUED )
+#else
+# define WAIT_FLAGS ( WNOHANG | WUNTRACED )
#endif
#endif /* _AC_WAIT_H */