projects / thirdparty / bash.git / blame
| Commit | Line | Data |
|---|---|---|
| 726f6388 JA |
1 | /* trap.h -- data structures used in the trap mechanism. */ |
| 2 | ||
| 3 | /* Copyright (C) 1993 Free Software Foundation, Inc. | |
| 4 | ||
| 5 | This file is part of GNU Bash, the Bourne Again SHell. | |
| 6 | ||
| 7 | Bash is free software; you can redistribute it and/or modify it under | |
| 8 | the terms of the GNU General Public License as published by the Free | |
| 9 | Software Foundation; either version 2, or (at your option) any later | |
| 10 | version. | |
| 11 | ||
| 12 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 | for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License along | |
| 18 | with Bash; see the file COPYING. If not, write to the Free Software | |
| bb70624e | 19 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| 726f6388 | 20 | |
| ccc6cda3 JA |
21 | #if !defined (_TRAP_H_) |
| 22 | #define _TRAP_H_ | |
| 726f6388 JA |
23 | |
| 24 | #include "stdc.h" | |
| 25 | ||
| 26 | #if !defined (SIG_DFL) | |
| d166f048 | 27 | #include "bashtypes.h" |
| 726f6388 JA |
28 | #include <signal.h> |
| 29 | #endif /* SIG_DFL */ | |
| 30 | ||
| 31 | #if !defined (NSIG) | |
| 32 | #define NSIG 64 | |
| 33 | #endif /* !NSIG */ | |
| 34 | ||
| 35 | #define NO_SIG -1 | |
| 36 | #define DEFAULT_SIG SIG_DFL | |
| 37 | #define IGNORE_SIG SIG_IGN | |
| 38 | ||
| ccc6cda3 JA |
39 | /* Special shell trap names. */ |
| 40 | #define DEBUG_TRAP NSIG | |
| f73dda09 | 41 | #define ERROR_TRAP NSIG+1 |
| ccc6cda3 JA |
42 | #define EXIT_TRAP 0 |
| 43 | ||
| f73dda09 JA |
44 | /* system signals plus special bash traps */ |
| 45 | #define BASH_NSIG NSIG+2 | |
| 46 | ||
| 726f6388 JA |
47 | #define signal_object_p(x) (decode_signal (x) != NO_SIG) |
| 48 | ||
| f73dda09 JA |
49 | #define TRAP_STRING(s) \ |
| 50 | (signal_is_trapped (s) && signal_is_ignored (s) == 0) ? trap_list[s] \ | |
| 51 | : (char *)NULL | |
| 52 | ||
| ccc6cda3 | 53 | extern char *trap_list[]; |
| 726f6388 JA |
54 | |
| 55 | /* Externally-visible functions declared in trap.c. */ | |
| 56 | extern void initialize_traps __P((void)); | |
| 57 | extern void run_pending_traps __P((void)); | |
| 58 | extern void maybe_set_sigchld_trap __P((char *)); | |
| 59 | extern void set_sigchld_trap __P((char *)); | |
| ccc6cda3 | 60 | extern void set_debug_trap __P((char *)); |
| f73dda09 | 61 | extern void set_error_trap __P((char *)); |
| ccc6cda3 | 62 | extern void set_sigint_trap __P((char *)); |
| 726f6388 JA |
63 | extern void set_signal __P((int, char *)); |
| 64 | extern void restore_default_signal __P((int)); | |
| 65 | extern void ignore_signal __P((int)); | |
| 66 | extern int run_exit_trap __P((void)); | |
| ccc6cda3 JA |
67 | extern void run_trap_cleanup __P((int)); |
| 68 | extern void run_debug_trap __P((void)); | |
| f73dda09 | 69 | extern void run_error_trap __P((void)); |
| 726f6388 JA |
70 | extern void free_trap_strings __P((void)); |
| 71 | extern void reset_signal_handlers __P((void)); | |
| 72 | extern void restore_original_signals __P((void)); | |
| 73 | ||
| 74 | extern char *signal_name __P((int)); | |
| 75 | ||
| 76 | extern int decode_signal __P((char *)); | |
| 77 | extern void run_interrupt_trap __P((void)); | |
| 78 | extern int maybe_call_trap_handler __P((int)); | |
| 79 | extern int signal_is_trapped __P((int)); | |
| 726f6388 | 80 | extern int signal_is_ignored __P((int)); |
| ccc6cda3 JA |
81 | extern int signal_is_special __P((int)); |
| 82 | extern void set_signal_ignored __P((int)); | |
| 726f6388 | 83 | |
| ccc6cda3 | 84 | #endif /* _TRAP_H_ */ |