Imported from ../bash-2.0.tar.gz.

sig.h

@@ -0,0 +1,121 @@
+/* sig.h -- header file for signal handler definitions. */
+
+/* Copyright (C) 1994 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* Make sure that this is included *after* config.h! */
+
+#if !defined (_SIG_H_)
+#  define _SIG_H_
+
+#include "stdc.h"
+
+#if !defined (SIGABRT) && defined (SIGIOT)
+#  define SIGABRT SIGIOT
+#endif
+
+#define sighandler RETSIGTYPE
+typedef RETSIGTYPE SigHandler ();
+
+#if defined (VOID_SIGHANDLER)
+#  define SIGRETURN(n)	return
+#else
+#  define SIGRETURN(n)	return(n)
+#endif /* !VOID_SIGHANDLER */
+
+/* Here is a definition for set_signal_handler () which simply expands to
+   a call to signal () for non-Posix systems.  The code for set_signal_handler
+   in the Posix case resides in general.c. */
+#if !defined (HAVE_POSIX_SIGNALS)
+#  define set_signal_handler(sig, handler) (SigHandler *)signal (sig, handler)
+#else
+extern SigHandler *set_signal_handler ();	/* in sig.c */
+#endif /* _POSIX_VERSION */
+
+/* Definitions used by the job control code. */
+#if defined (JOB_CONTROL)
+
+#if !defined (SIGCHLD) && defined (SIGCLD)
+#  define SIGCHLD SIGCLD
+#endif
+
+#if !defined (HAVE_POSIX_SIGNALS) && !defined (sigmask)
+#  define sigmask(x) (1 << ((x)-1))
+#endif /* !HAVE_POSIX_SIGNALS && !sigmask */
+
+#if !defined (HAVE_POSIX_SIGNALS)
+#  if !defined (SIG_BLOCK)
+#    define SIG_BLOCK 2
+#    define SIG_SETMASK 3
+#  endif /* SIG_BLOCK */
+
+/* sigset_t defined in config.h */
+
+/* Make sure there is nothing inside the signal set. */
+#  define sigemptyset(set) (*(set) = 0)
+
+/* Initialize the signal set to hold all signals. */
+#  define sigfillset(set) (*set) = sigmask (NSIG) - 1
+
+/* Add SIG to the contents of SET. */
+#  define sigaddset(set, sig) *(set) |= sigmask (sig)
+
+/* Delete SIG from signal set SET. */
+#  define sigdelset(set, sig) *(set) &= ~sigmask (sig)
+
+/* Is SIG a member of the signal set SET? */
+#  define sigismember(set, sig) ((*(set) & sigmask (sig)) != 0)
+
+/* Suspend the process until the reception of one of the signals
+   not present in SET. */
+#  define sigsuspend(set) sigpause (*(set))
+#endif /* !HAVE_POSIX_SIGNALS */
+
+/* These definitions are used both in POSIX and non-POSIX implementations. */
+
+#define BLOCK_SIGNAL(sig, nvar, ovar) \
+  sigemptyset (&nvar); \
+  sigaddset (&nvar, sig); \
+  sigemptyset (&ovar); \
+  sigprocmask (SIG_BLOCK, &nvar, &ovar)
+
+#if defined (HAVE_POSIX_SIGNALS)
+#  define BLOCK_CHILD(nvar, ovar) \
+	BLOCK_SIGNAL (SIGCHLD, nvar, ovar)
+#  define UNBLOCK_CHILD(ovar) \
+	sigprocmask (SIG_SETMASK, &ovar, (sigset_t *) NULL)
+#else /* !HAVE_POSIX_SIGNALS */
+#  define BLOCK_CHILD(nvar, ovar) ovar = sigblock (sigmask (SIGCHLD))
+#  define UNBLOCK_CHILD(ovar) sigsetmask (ovar)
+#endif /* !HAVE_POSIX_SIGNALS */
+
+#endif /* JOB_CONTROL */
+
+/* Functions from sig.c. */
+extern sighandler termination_unwind_protect __P((int));
+extern sighandler sigint_sighandler __P((int));
+extern void initialize_signals __P((void));
+extern void reinitialize_signals __P((void));
+extern void reset_terminating_signals __P((void));
+extern void throw_to_top_level __P((void));
+extern void jump_to_top_level __P((int));
+
+/* Functions defined in trap.c. */
+extern SigHandler *set_sigint_handler __P((void));
+
+#endif /* _SIG_H_ */