98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
/* unionwait.h -- definitions for using a `union wait' on systems without
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one. */
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/* Copyright (C) 1996 Free Software Foundation, Inc.
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This file is part of GNU Bash, the Bourne Again SHell.
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Bash is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Bash is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Bash. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _UNIONWAIT_H
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#define _UNIONWAIT_H
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#if !defined (WORDS_BIGENDIAN)
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union wait
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{
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int w_status; /* used in syscall */
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/* Terminated process status. */
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struct
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{
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unsigned short
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w_Termsig : 7, /* termination signal */
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w_Coredump : 1, /* core dump indicator */
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w_Retcode : 8, /* exit code if w_termsig==0 */
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w_Fill1 : 16; /* high 16 bits unused */
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} w_T;
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/* Stopped process status. Returned
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only for traced children unless requested
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with the WUNTRACED option bit. */
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struct
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{
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unsigned short
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w_Stopval : 8, /* == W_STOPPED if stopped */
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w_Stopsig : 8, /* actually zero on XENIX */
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w_Fill2 : 16; /* high 16 bits unused */
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} w_S;
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};
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#else /* WORDS_BIGENDIAN */
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/* This is for big-endian machines like the IBM RT, HP 9000, or Sun-3 */
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union wait
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{
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int w_status; /* used in syscall */
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/* Terminated process status. */
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struct
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{
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unsigned short w_Fill1 : 16; /* high 16 bits unused */
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unsigned w_Retcode : 8; /* exit code if w_termsig==0 */
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unsigned w_Coredump : 1; /* core dump indicator */
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unsigned w_Termsig : 7; /* termination signal */
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} w_T;
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/* Stopped process status. Returned
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only for traced children unless requested
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with the WUNTRACED option bit. */
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struct
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{
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unsigned short w_Fill2 : 16; /* high 16 bits unused */
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unsigned w_Stopsig : 8; /* signal that stopped us */
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unsigned w_Stopval : 8; /* == W_STOPPED if stopped */
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} w_S;
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};
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#endif /* WORDS_BIGENDIAN */
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#define w_termsig w_T.w_Termsig
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#define w_coredump w_T.w_Coredump
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#define w_retcode w_T.w_Retcode
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#define w_stopval w_S.w_Stopval
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#define w_stopsig w_S.w_Stopsig
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#define WSTOPPED 0177
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#define WIFSTOPPED(x) ((x).w_stopval == WSTOPPED)
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#define WIFEXITED(x) ((x).w_stopval != WSTOPPED && (x).w_termsig == 0)
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#define WIFSIGNALED(x) ((x).w_stopval != WSTOPPED && (x).w_termsig != 0)
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#define WTERMSIG(x) ((x).w_termsig)
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#define WSTOPSIG(x) ((x).w_stopsig)
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#define WEXITSTATUS(x) ((x).w_retcode)
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#define WIFCORED(x) ((x).w_coredump)
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#endif /* _UNIONWAIT_H */
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