| 1 | /* unionwait.h -- definitions for using a `union wait' on systems without
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| 2 | one. */
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| 3 |
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| 4 | /* Copyright (C) 1996 Free Software Foundation, Inc.
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| 5 |
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| 6 | This file is part of GNU Bash, the Bourne Again SHell.
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| 7 |
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| 8 | Bash is free software; you can redistribute it and/or modify it under
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| 9 | the terms of the GNU General Public License as published by the Free
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| 10 | Software Foundation; either version 2, or (at your option) any later
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| 11 | version.
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| 12 |
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| 13 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY
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| 14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or
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| 15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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| 16 | for more details.
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| 17 |
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| 18 | You should have received a copy of the GNU General Public License along
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| 19 | with Bash; see the file COPYING. If not, write to the Free Software
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| 20 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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| 21 |
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| 22 | #ifndef _UNIONWAIT_H
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| 23 | #define _UNIONWAIT_H
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| 24 |
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| 25 | #if !defined (WORDS_BIGENDIAN)
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| 26 | union wait
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| 27 | {
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| 28 | int w_status; /* used in syscall */
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| 29 |
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| 30 | /* Terminated process status. */
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| 31 | struct
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| 32 | {
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| 33 | unsigned short
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| 34 | w_Termsig : 7, /* termination signal */
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| 35 | w_Coredump : 1, /* core dump indicator */
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| 36 | w_Retcode : 8, /* exit code if w_termsig==0 */
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| 37 | w_Fill1 : 16; /* high 16 bits unused */
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| 38 | } w_T;
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| 39 |
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| 40 | /* Stopped process status. Returned
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| 41 | only for traced children unless requested
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| 42 | with the WUNTRACED option bit. */
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| 43 | struct
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| 44 | {
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| 45 | unsigned short
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| 46 | w_Stopval : 8, /* == W_STOPPED if stopped */
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| 47 | w_Stopsig : 8, /* actually zero on XENIX */
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| 48 | w_Fill2 : 16; /* high 16 bits unused */
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| 49 | } w_S;
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| 50 | };
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| 51 |
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| 52 | #else /* WORDS_BIGENDIAN */
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| 53 |
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| 54 | /* This is for big-endian machines like the IBM RT, HP 9000, or Sun-3 */
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| 55 |
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| 56 | union wait
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| 57 | {
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| 58 | int w_status; /* used in syscall */
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| 59 |
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| 60 | /* Terminated process status. */
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| 61 | struct
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| 62 | {
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| 63 | unsigned short w_Fill1 : 16; /* high 16 bits unused */
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| 64 | unsigned w_Retcode : 8; /* exit code if w_termsig==0 */
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| 65 | unsigned w_Coredump : 1; /* core dump indicator */
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| 66 | unsigned w_Termsig : 7; /* termination signal */
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| 67 | } w_T;
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| 68 |
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| 69 | /* Stopped process status. Returned
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| 70 | only for traced children unless requested
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| 71 | with the WUNTRACED option bit. */
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| 72 | struct
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| 73 | {
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| 74 | unsigned short w_Fill2 : 16; /* high 16 bits unused */
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| 75 | unsigned w_Stopsig : 8; /* signal that stopped us */
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| 76 | unsigned w_Stopval : 8; /* == W_STOPPED if stopped */
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| 77 | } w_S;
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| 78 | };
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| 79 |
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| 80 | #endif /* WORDS_BIGENDIAN */
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| 81 |
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| 82 | #define w_termsig w_T.w_Termsig
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| 83 | #define w_coredump w_T.w_Coredump
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| 84 | #define w_retcode w_T.w_Retcode
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| 85 | #define w_stopval w_S.w_Stopval
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| 86 | #define w_stopsig w_S.w_Stopsig
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| 87 |
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| 88 | #define WSTOPPED 0177
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| 89 | #define WIFSTOPPED(x) ((x).w_stopval == WSTOPPED)
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| 90 | #define WIFEXITED(x) ((x).w_stopval != WSTOPPED && (x).w_termsig == 0)
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| 91 | #define WIFSIGNALED(x) ((x).w_stopval != WSTOPPED && (x).w_termsig != 0)
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| 92 |
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| 93 | #define WTERMSIG(x) ((x).w_termsig)
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| 94 | #define WSTOPSIG(x) ((x).w_stopsig)
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| 95 | #define WEXITSTATUS(x) ((x).w_retcode)
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| 96 | #define WIFCORED(x) ((x).w_coredump)
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| 97 |
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| 98 | #endif /* _UNIONWAIT_H */
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