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authorAn-Cheng Huang <ancheng@vyatta.com>2007-11-12 13:06:02 -0800
committerAn-Cheng Huang <ancheng@vyatta.com>2007-11-12 13:06:02 -0800
commitb7fc9e0f6d6105ba2203f219743d4b269415e84b (patch)
treeef6586dfc62798c2b17487b443864699aca55f31 /trap.h
downloadvyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.tar.gz
vyatta-bash-b7fc9e0f6d6105ba2203f219743d4b269415e84b.zip
initial import from bash_3.1dfsg.orig.tar.gz
Diffstat (limited to 'trap.h')
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1 files changed, 98 insertions, 0 deletions
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+/* trap.h -- data structures used in the trap mechanism. */
+
+/* Copyright (C) 1993 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 2, 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; see the file COPYING. If not, write to the Free Software
+ Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+#if !defined (_TRAP_H_)
+#define _TRAP_H_
+
+#include "stdc.h"
+
+#if !defined (SIG_DFL)
+#include "bashtypes.h"
+#include <signal.h>
+#endif /* SIG_DFL */
+
+#if !defined (NSIG)
+#define NSIG 64
+#endif /* !NSIG */
+
+#define NO_SIG -1
+#define DEFAULT_SIG SIG_DFL
+#define IGNORE_SIG SIG_IGN
+
+/* Special shell trap names. */
+#define DEBUG_TRAP NSIG
+#define ERROR_TRAP NSIG+1
+#define RETURN_TRAP NSIG+2
+#define EXIT_TRAP 0
+
+/* system signals plus special bash traps */
+#define BASH_NSIG NSIG+3
+
+/* Flags values for decode_signal() */
+#define DSIG_SIGPREFIX 0x01 /* don't alllow `SIG' PREFIX */
+#define DSIG_NOCASE 0x02 /* case-insensitive comparison */
+
+#define signal_object_p(x,f) (decode_signal (x,f) != NO_SIG)
+
+#define TRAP_STRING(s) \
+ (signal_is_trapped (s) && signal_is_ignored (s) == 0) ? trap_list[s] \
+ : (char *)NULL
+
+extern char *trap_list[];
+
+/* Externally-visible functions declared in trap.c. */
+extern void initialize_traps __P((void));
+
+extern void run_pending_traps __P((void));
+
+extern void maybe_set_sigchld_trap __P((char *));
+extern void set_sigchld_trap __P((char *));
+
+extern void set_debug_trap __P((char *));
+extern void set_error_trap __P((char *));
+extern void set_return_trap __P((char *));
+
+extern void set_sigint_trap __P((char *));
+extern void set_signal __P((int, char *));
+
+extern void restore_default_signal __P((int));
+extern void ignore_signal __P((int));
+extern int run_exit_trap __P((void));
+extern void run_trap_cleanup __P((int));
+extern int run_debug_trap __P((void));
+extern void run_error_trap __P((void));
+extern void run_return_trap __P((void));
+
+extern void free_trap_strings __P((void));
+extern void reset_signal_handlers __P((void));
+extern void restore_original_signals __P((void));
+
+extern char *signal_name __P((int));
+
+extern int decode_signal __P((char *, int));
+extern void run_interrupt_trap __P((void));
+extern int maybe_call_trap_handler __P((int));
+extern int signal_is_trapped __P((int));
+extern int signal_is_ignored __P((int));
+extern int signal_is_special __P((int));
+extern void set_signal_ignored __P((int));
+extern int signal_in_progress __P((int));
+
+#endif /* _TRAP_H_ */