The GNU Readline Library 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 1, or
+ as published by the Free Software Foundation; either version 2, or
(at your option) any later version.
The GNU Readline Library is distributed in the hope that it will be
The GNU General Public License is often shipped with GNU software, and
is generally kept in a file called COPYING or LICENSE. If you do not
have a copy of the license, write to the Free Software Foundation,
- 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_H)
# include <sys/ioctl.h>
#endif /* GWINSZ_IN_SYS_IOCTL */
-#if defined (__GO32__)
-# undef HANDLE_SIGNALS
-#endif /* __GO32__ */
-
#if defined (HANDLE_SIGNALS)
/* Some standard library routines. */
#include "readline.h"
#include "history.h"
+#include "rlprivate.h"
+
#if !defined (RETSIGTYPE)
# if defined (VOID_SIGHANDLER)
# define RETSIGTYPE void
# define SIGHANDLER_RETURN return (0)
#endif
-/* This typedef is equivalant to the one for Function; it allows us
+/* This typedef is equivalent to the one for Function; it allows us
to say SigHandler *foo = signal (SIGKILL, SIG_IGN); */
typedef RETSIGTYPE SigHandler ();
-extern int readline_echoing_p;
-extern int rl_pending_input;
-extern int _rl_meta_flag;
-
-extern void free_undo_list ();
-extern void _rl_get_screen_size ();
-extern void _rl_redisplay_after_sigwinch ();
-extern void _rl_clean_up_for_exit ();
-extern void _rl_kill_kbd_macro ();
-extern void _rl_init_argument ();
-extern void rl_deprep_terminal (), rl_prep_terminal ();
+#if defined (HAVE_POSIX_SIGNALS)
+typedef struct sigaction sighandler_cxt;
+# define rl_sigaction(s, nh, oh) sigaction(s, nh, oh)
+#else
+typedef struct { SigHandler *sa_handler; int sa_mask, sa_flags; } sighandler_cxt;
+# define sigemptyset(m)
+#endif /* !HAVE_POSIX_SIGNALS */
-static SigHandler *rl_set_sighandler ();
+static SigHandler *rl_set_sighandler PARAMS((int, SigHandler *, sighandler_cxt *));
+static void rl_maybe_set_sighandler PARAMS((int, SigHandler *, sighandler_cxt *));
/* Exported variables for use by applications. */
#endif
static int signals_set_flag;
+#ifdef SIGWINCH
static int sigwinch_set_flag;
+#endif
/* **************************************************************** */
/* */
/* */
/* **************************************************************** */
-#if defined (HAVE_POSIX_SIGNALS)
-typedef struct sigaction sighandler_cxt;
-# define rl_sigaction(s, nh, oh) sigaction(s, nh, oh)
-#else
-typedef struct { SigHandler *sa_handler; int sa_mask, sa_flags; } sighandler_cxt;
-# define sigemptyset(m)
-#endif /* !HAVE_POSIX_SIGNALS */
-
static sighandler_cxt old_int, old_term, old_alrm, old_quit;
#if defined (SIGTSTP)
static sighandler_cxt old_tstp, old_ttou, old_ttin;
# endif /* !HAVE_BSD_SIGNALS */
#endif /* !HAVE_POSIX_SIGNALS */
+ RL_SETSTATE(RL_STATE_SIGHANDLER);
+
#if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
/* Since the signal will not be blocked while we are in the signal
handler, ignore it until rl_clear_signals resets the catcher. */
- if (sig == SIGINT || sig == SIGALRM)
+ if (sig == SIGINT
+#ifdef SIGALRM
+ || sig == SIGALRM
+#endif
+ )
rl_set_sighandler (sig, SIG_IGN, &dummy_cxt);
#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
case SIGTTOU:
case SIGTTIN:
#endif /* SIGTSTP */
+#ifdef SIGALRM
case SIGALRM:
+#endif
case SIGTERM:
+#ifdef SIGQUIT
case SIGQUIT:
+#endif
rl_cleanup_after_signal ();
#if defined (HAVE_POSIX_SIGNALS)
# endif /* HAVE_BSD_SIGNALS */
#endif /* !HAVE_POSIX_SIGNALS */
+#if defined (__EMX__)
+ signal (sig, SIG_ACK);
+#endif
+
+ /* If we have the POSIX kill function, use it; otherwise, fall
+ back to the ISO C raise function. (Windows is an example of
+ a platform that has raise, but not kill.) */
+#ifdef HAVE_KILL
kill (getpid (), sig);
+#else
+ raise (sig);
+#endif
/* Let the signal that we just sent through. */
#if defined (HAVE_POSIX_SIGNALS)
rl_reset_after_signal ();
}
+ RL_UNSETSTATE(RL_STATE_SIGHANDLER);
SIGHANDLER_RETURN;
}
rl_set_sighandler (SIGWINCH, rl_sigwinch_handler, &dummy_winch);
#endif
+ RL_SETSTATE(RL_STATE_SIGHANDLER);
rl_resize_terminal ();
/* If another sigwinch handler has been installed, call it. */
if (oh && oh != (SigHandler *)SIG_IGN && oh != (SigHandler *)SIG_DFL)
(*oh) (sig);
+ RL_UNSETSTATE(RL_STATE_SIGHANDLER);
SIGHANDLER_RETURN;
}
#endif /* SIGWINCH */
SigHandler *handler;
sighandler_cxt *ohandler;
{
+ sighandler_cxt old_handler;
#if defined (HAVE_POSIX_SIGNALS)
struct sigaction act;
act.sa_handler = handler;
- act.sa_flags = 0;
+ act.sa_flags = 0; /* XXX - should we set SA_RESTART for SIGWINCH? */
sigemptyset (&act.sa_mask);
sigemptyset (&ohandler->sa_mask);
- sigaction (sig, &act, ohandler);
+ sigaction (sig, &act, &old_handler);
#else
- ohandler->sa_handler = (SigHandler *)signal (sig, handler);
+ old_handler.sa_handler = (SigHandler *)signal (sig, handler);
#endif /* !HAVE_POSIX_SIGNALS */
+
+ /* XXX -- assume we have memcpy */
+ /* If rl_set_signals is called twice in a row, don't set the old handler to
+ rl_signal_handler, because that would cause infinite recursion. */
+ if (handler != rl_signal_handler || old_handler.sa_handler != rl_signal_handler)
+ memcpy (ohandler, &old_handler, sizeof (sighandler_cxt));
+
return (ohandler->sa_handler);
}
{
rl_maybe_set_sighandler (SIGINT, rl_signal_handler, &old_int);
rl_maybe_set_sighandler (SIGTERM, rl_signal_handler, &old_term);
+#ifdef SIGQUIT
rl_maybe_set_sighandler (SIGQUIT, rl_signal_handler, &old_quit);
+#endif
+#ifdef SIGALRM
oh = rl_set_sighandler (SIGALRM, rl_signal_handler, &old_alrm);
if (oh == (SigHandler *)SIG_IGN)
rl_sigaction (SIGALRM, &old_alrm, &dummy);
if (oh != (SigHandler *)SIG_DFL && (old_alrm.sa_flags & SA_RESTART))
rl_sigaction (SIGALRM, &old_alrm, &dummy);
#endif /* HAVE_POSIX_SIGNALS */
+#endif /* SIGALRM */
#if defined (SIGTSTP)
rl_maybe_set_sighandler (SIGTSTP, rl_signal_handler, &old_tstp);
rl_sigaction (SIGINT, &old_int, &dummy);
rl_sigaction (SIGTERM, &old_term, &dummy);
+#ifdef SIGQUIT
rl_sigaction (SIGQUIT, &old_quit, &dummy);
+#endif
+#ifdef SIGALRM
rl_sigaction (SIGALRM, &old_alrm, &dummy);
+#endif
#if defined (SIGTSTP)
rl_sigaction (SIGTSTP, &old_tstp, &dummy);
_rl_clean_up_for_exit ();
(*rl_deprep_term_function) ();
rl_clear_signals ();
- rl_pending_input = 0;
+ rl_clear_pending_input ();
}
/* Reset the terminal and readline state after a signal handler returns. */
{
register HIST_ENTRY *entry;
- free_undo_list ();
+ rl_free_undo_list ();
entry = current_history ();
if (entry)
projects / deliverable / binutils-gdb.git / blobdiff