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-rw-r--r--contrib/libreadline/signals.c334
1 files changed, 0 insertions, 334 deletions
diff --git a/contrib/libreadline/signals.c b/contrib/libreadline/signals.c
deleted file mode 100644
index 2fe79532d8d1..000000000000
--- a/contrib/libreadline/signals.c
+++ /dev/null
@@ -1,334 +0,0 @@
-/* signals.c -- signal handling support for readline. */
-
-/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
-
- This file is part of the GNU Readline Library, a library for
- reading lines of text with interactive input and history editing.
-
- 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
- (at your option) any later version.
-
- The GNU Readline Library 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.
-
- 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. */
-#define READLINE_LIBRARY
-
-#if defined (HAVE_CONFIG_H)
-# include <config.h>
-#endif
-
-#include <stdio.h> /* Just for NULL. Yuck. */
-#include <sys/types.h>
-#include <signal.h>
-
-#if defined (HAVE_UNISTD_H)
-# include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-
-/* System-specific feature definitions and include files. */
-#include "rldefs.h"
-
-#if defined (GWINSZ_IN_SYS_IOCTL)
-# 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"
-
-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 (RETSIGTYPE)
-# if defined (VOID_SIGHANDLER)
-# define RETSIGTYPE void
-# else
-# define RETSIGTYPE int
-# endif /* !VOID_SIGHANDLER */
-#endif /* !RETSIGTYPE */
-
-#if defined (VOID_SIGHANDLER)
-# define SIGHANDLER_RETURN return
-#else
-# define SIGHANDLER_RETURN return (0)
-#endif
-
-/* This typedef is equivalant to the one for Function; it allows us
- to say SigHandler *foo = signal (SIGKILL, SIG_IGN); */
-typedef RETSIGTYPE SigHandler ();
-
-static SigHandler *rl_set_sighandler ();
-
-/* **************************************************************** */
-/* */
-/* Signal Handling */
-/* */
-/* **************************************************************** */
-
-#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; } sighandler_cxt;
-# define sigemptyset(m)
-#endif /* !HAVE_POSIX_SIGNALS */
-
-static sighandler_cxt old_int, old_alrm;
-
-#if !defined (SHELL)
-static sighandler_cxt old_tstp, old_ttou, old_ttin, old_term;
-#endif /* !SHELL */
-
-#if defined (SIGWINCH)
-static sighandler_cxt old_winch;
-#endif
-
-/* Readline signal handler functions. */
-
-static RETSIGTYPE
-rl_signal_handler (sig)
- int sig;
-{
-#if defined (HAVE_POSIX_SIGNALS)
- sigset_t set;
-#else /* !HAVE_POSIX_SIGNALS */
-# if defined (HAVE_BSD_SIGNALS)
- long omask;
-# endif /* HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
-#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)
- rl_set_sighandler (sig, SIG_IGN, (sighandler_cxt *)NULL);
-#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
-
- switch (sig)
- {
- case SIGINT:
- {
- register HIST_ENTRY *entry;
-
- free_undo_list ();
-
- entry = current_history ();
- if (entry)
- entry->data = (char *)NULL;
- }
- _rl_kill_kbd_macro ();
- rl_clear_message ();
- _rl_init_argument ();
-
-#if defined (SIGTSTP)
- case SIGTSTP:
- case SIGTTOU:
- case SIGTTIN:
-#endif /* SIGTSTP */
- case SIGALRM:
- case SIGTERM:
- _rl_clean_up_for_exit ();
- (*rl_deprep_term_function) ();
- rl_clear_signals ();
- rl_pending_input = 0;
-
-#if defined (HAVE_POSIX_SIGNALS)
- sigprocmask (SIG_BLOCK, (sigset_t *)NULL, &set);
- sigdelset (&set, sig);
-#else /* !HAVE_POSIX_SIGNALS */
-# if defined (HAVE_BSD_SIGNALS)
- omask = sigblock (0);
-# endif /* HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
- kill (getpid (), sig);
-
- /* Let the signal that we just sent through. */
-#if defined (HAVE_POSIX_SIGNALS)
- sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL);
-#else /* !HAVE_POSIX_SIGNALS */
-# if defined (HAVE_BSD_SIGNALS)
- sigsetmask (omask & ~(sigmask (sig)));
-# endif /* HAVE_BSD_SIGNALS */
-#endif /* !HAVE_POSIX_SIGNALS */
-
- (*rl_prep_term_function) (_rl_meta_flag);
- rl_set_signals ();
- }
-
- SIGHANDLER_RETURN;
-}
-
-#if defined (SIGWINCH)
-static RETSIGTYPE
-rl_handle_sigwinch (sig)
- int sig;
-{
- SigHandler *oh;
-
- if (readline_echoing_p)
- {
- _rl_get_screen_size (fileno (rl_instream), 1);
- _rl_redisplay_after_sigwinch ();
- }
-
- /* If another sigwinch handler has been installed, call it. */
- oh = (SigHandler *)old_winch.sa_handler;
- if (oh && oh != (SigHandler *)SIG_IGN && oh != (SigHandler *)SIG_DFL)
- (*oh) (sig);
-
- SIGHANDLER_RETURN;
-}
-#endif /* SIGWINCH */
-
-/* Functions to manage signal handling. */
-
-#if !defined (HAVE_POSIX_SIGNALS)
-static int
-rl_sigaction (sig, nh, oh)
- int sig;
- sighandler_cxt *nh, *oh;
-{
- oh->sa_handler = signal (sig, nh->sa_handler);
- return 0;
-}
-#endif /* !HAVE_POSIX_SIGNALS */
-
-/* Set up a readline-specific signal handler, saving the old signal
- information in OHANDLER. Return the old signal handler, like
- signal(). */
-static SigHandler *
-rl_set_sighandler (sig, handler, ohandler)
- int sig;
- SigHandler *handler;
- sighandler_cxt *ohandler;
-{
-#if defined (HAVE_POSIX_SIGNALS)
- struct sigaction act;
-
- act.sa_handler = handler;
- act.sa_flags = 0;
- sigemptyset (&act.sa_mask);
- sigemptyset (&ohandler->sa_mask);
- sigaction (sig, &act, ohandler);
-#else
- ohandler->sa_handler = (SigHandler *)signal (sig, handler);
-#endif /* !HAVE_POSIX_SIGNALS */
- return (ohandler->sa_handler);
-}
-
-int
-rl_set_signals ()
-{
- sighandler_cxt dummy;
- SigHandler *oh;
-
-#if defined (HAVE_POSIX_SIGNALS)
- sigemptyset (&dummy.sa_mask);
-#endif
-
- oh = rl_set_sighandler (SIGINT, rl_signal_handler, &old_int);
- if (oh == (SigHandler *)SIG_IGN)
- rl_sigaction (SIGINT, &old_int, &dummy);
-
- oh = rl_set_sighandler (SIGALRM, rl_signal_handler, &old_alrm);
- if (oh == (SigHandler *)SIG_IGN)
- rl_sigaction (SIGALRM, &old_alrm, &dummy);
-#if defined (HAVE_POSIX_SIGNALS) && defined (SA_RESTART)
- /* If the application using readline has already installed a signal
- handler with SA_RESTART, SIGALRM will cause reads to be restarted
- automatically, so readline should just get out of the way. Since
- we tested for SIG_IGN above, we can just test for SIG_DFL here. */
- if (oh != (SigHandler *)SIG_DFL && (old_alrm.sa_flags & SA_RESTART))
- rl_sigaction (SIGALRM, &old_alrm, &dummy);
-#endif /* HAVE_POSIX_SIGNALS */
-
-#if !defined (SHELL)
-
-#if defined (SIGTSTP)
- oh = rl_set_sighandler (SIGTSTP, rl_signal_handler, &old_tstp);
- if (oh == (SigHandler *)SIG_IGN)
- rl_sigaction (SIGTSTP, &old_tstp, &dummy);
-#else
- oh = (SigHandler *)NULL;
-#endif /* SIGTSTP */
-
-#if defined (SIGTTOU)
- rl_set_sighandler (SIGTTOU, rl_signal_handler, &old_ttou);
- rl_set_sighandler (SIGTTIN, rl_signal_handler, &old_ttin);
-
- if (oh == (SigHandler *)SIG_IGN)
- {
- rl_set_sighandler (SIGTTOU, SIG_IGN, &dummy);
- rl_set_sighandler (SIGTTIN, SIG_IGN, &dummy);
- }
-#endif /* SIGTTOU */
-
- /* Handle SIGTERM if we're not being compiled as part of bash. */
- rl_set_sighandler (SIGTERM, rl_signal_handler, &old_term);
-#endif /* !SHELL */
-
-#if defined (SIGWINCH)
- rl_set_sighandler (SIGWINCH, rl_handle_sigwinch, &old_winch);
-#endif /* SIGWINCH */
-
- return 0;
-}
-
-int
-rl_clear_signals ()
-{
- sighandler_cxt dummy;
-
-#if defined (HAVE_POSIX_SIGNALS)
- sigemptyset (&dummy.sa_mask);
-#endif
-
- rl_sigaction (SIGINT, &old_int, &dummy);
- rl_sigaction (SIGALRM, &old_alrm, &dummy);
-
-#if !defined (SHELL)
-
-#if defined (SIGTSTP)
- rl_sigaction (SIGTSTP, &old_tstp, &dummy);
-#endif
-
-#if defined (SIGTTOU)
- rl_sigaction (SIGTTOU, &old_ttou, &dummy);
- rl_sigaction (SIGTTIN, &old_ttin, &dummy);
-#endif /* SIGTTOU */
-
- rl_sigaction (SIGTERM, &old_term, &dummy);
-
-#endif /* !SHELL */
-
-#if defined (SIGWINCH)
- sigemptyset (&dummy.sa_mask);
- rl_sigaction (SIGWINCH, &old_winch, &dummy);
-#endif
-
- return 0;
-}
-#endif /* HANDLE_SIGNALS */
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