1 files changed, 104 insertions, 0 deletions
diff --git a/bits/waitstatus.h b/bits/waitstatus.h
new file mode 100644
index 0000000000..8e97f2702c
--- /dev/null
+++ b/bits/waitstatus.h
@@ -0,0 +1,104 @@
+/* Definitions of status bits for `wait' et al.
+   Copyright (C) 1992, 1994, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_WAIT_H
+#error "Never use <bits/waitstatus.h> directly; include <sys/wait.h> instead."
+#endif
+
+
+/* Everything extant so far uses these same bits.  */
+
+
+/* If WIFEXITED(STATUS), the low-order 8 bits of the status.  */
+#define	__WEXITSTATUS(status)	(((status) & 0xff00) >> 8)
+
+/* If WIFSIGNALED(STATUS), the terminating signal.  */
+#define	__WTERMSIG(status)	((status) & 0x7f)
+
+/* If WIFSTOPPED(STATUS), the signal that stopped the child.  */
+#define	__WSTOPSIG(status)	__WEXITSTATUS(status)
+
+/* Nonzero if STATUS indicates normal termination.  */
+#define	__WIFEXITED(status)	(__WTERMSIG(status) == 0)
+
+/* Nonzero if STATUS indicates termination by a signal.  */
+#ifdef	__GNUC__
+#define	__WIFSIGNALED(status)						      \
+  (__extension__ ({ int __status = (status);				      \
+		    !__WIFSTOPPED(__status) && !__WIFEXITED(__status); }))
+#else	/* Not GCC.  */
+#define	__WIFSIGNALED(status)	(!__WIFSTOPPED(status) && !__WIFEXITED(status))
+#endif	/* GCC.  */
+
+/* Nonzero if STATUS indicates the child is stopped.  */
+#define	__WIFSTOPPED(status)	(((status) & 0xff) == 0x7f)
+
+/* Nonzero if STATUS indicates the child dumped core.  */
+#define	__WCOREDUMP(status)	((status) & __WCOREFLAG)
+
+/* Macros for constructing status values.  */
+#define	__W_EXITCODE(ret, sig)	((ret) << 8 | (sig))
+#define	__W_STOPCODE(sig)	((sig) << 8 | 0x7f)
+#define	__WCOREFLAG		0x80
+
+
+#ifdef	__USE_BSD
+
+#include <endian.h>
+
+union wait
+  {
+    int w_status;
+    struct
+      {
+#if	__BYTE_ORDER == __LITTLE_ENDIAN
+	unsigned int __w_termsig:7; /* Terminating signal.  */
+	unsigned int __w_coredump:1; /* Set if dumped core.  */
+	unsigned int __w_retcode:8; /* Return code if exited normally.  */
+	unsigned int:16;
+#endif				/* Little endian.  */
+#if	__BYTE_ORDER == __BIG_ENDIAN
+	unsigned int:16;
+	unsigned int __w_retcode:8;
+	unsigned int __w_coredump:1;
+	unsigned int __w_termsig:7;
+#endif				/* Big endian.  */
+      } __wait_terminated;
+    struct
+      {
+#if	__BYTE_ORDER == __LITTLE_ENDIAN
+	unsigned int __w_stopval:8; /* W_STOPPED if stopped.  */
+	unsigned int __w_stopsig:8; /* Stopping signal.  */
+	unsigned int:16;
+#endif				/* Little endian.  */
+#if	__BYTE_ORDER == __BIG_ENDIAN
+	unsigned int:16;
+	unsigned int __w_stopsig:8; /* Stopping signal.  */
+	unsigned int __w_stopval:8; /* W_STOPPED if stopped.  */
+#endif				/* Big endian.  */
+      } __wait_stopped;
+  };
+
+#define	w_termsig	__wait_terminated.__w_termsig
+#define	w_coredump	__wait_terminated.__w_coredump
+#define	w_retcode	__wait_terminated.__w_retcode
+#define	w_stopsig	__wait_stopped.__w_stopsig
+#define	w_stopval	__wait_stopped.__w_stopval
+
+#endif	/* Use BSD.  */