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