/usr/include/x86_64-linux-gnu/bits/waitstatus.h is in libc6-dev 2.27-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | /* Definitions of status bits for `wait' et al.
Copyright (C) 1992-2018 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#if !defined _SYS_WAIT_H && !defined _STDLIB_H
# error "Never include <bits/waitstatus.h> directly; use <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. */
#define __WIFSIGNALED(status) \
(((signed char) (((status) & 0x7f) + 1) >> 1) > 0)
/* Nonzero if STATUS indicates the child is stopped. */
#define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
/* Nonzero if STATUS indicates the child continued after a stop. We only
define this if <bits/waitflags.h> provides the WCONTINUED flag bit. */
#ifdef WCONTINUED
# define __WIFCONTINUED(status) ((status) == __W_CONTINUED)
#endif
/* 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 __W_CONTINUED 0xffff
#define __WCOREFLAG 0x80
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