diff options
Diffstat (limited to 'readline/signals.c')
| -rw-r--r-- | readline/signals.c | 40 |
1 files changed, 34 insertions, 6 deletions
diff --git a/readline/signals.c b/readline/signals.c index 0a1468b..f344ed8 100644 --- a/readline/signals.c +++ b/readline/signals.c @@ -1,6 +1,6 @@ /* signals.c -- signal handling support for readline. */ -/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc. +/* Copyright (C) 1987-2005 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. @@ -73,6 +73,10 @@ typedef struct { SigHandler *sa_handler; int sa_mask, sa_flags; } sighandler_cxt # define sigemptyset(m) #endif /* !HAVE_POSIX_SIGNALS */ +#ifndef SA_RESTART +# define SA_RESTART 0 +#endif + static SigHandler *rl_set_sighandler PARAMS((int, SigHandler *, sighandler_cxt *)); static void rl_maybe_set_sighandler PARAMS((int, SigHandler *, sighandler_cxt *)); @@ -85,6 +89,8 @@ int rl_catch_signals = 1; /* If non-zero, readline will install a signal handler for SIGWINCH. */ #ifdef SIGWINCH int rl_catch_sigwinch = 1; +#else +int rl_catch_sigwinch = 0; /* for the readline state struct in readline.c */ #endif static int signals_set_flag; @@ -125,7 +131,11 @@ rl_signal_handler (sig) #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 defined (SIGALRM) if (sig == SIGINT || sig == SIGALRM) +# else + if (sig == SIGINT) +# endif rl_set_sighandler (sig, SIG_IGN, &dummy_cxt); #endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */ @@ -135,14 +145,18 @@ rl_signal_handler (sig) rl_free_line_state (); /* FALLTHROUGH */ + case SIGTERM: #if defined (SIGTSTP) case SIGTSTP: case SIGTTOU: case SIGTTIN: #endif /* SIGTSTP */ +#if defined (SIGALRM) case SIGALRM: - case SIGTERM: +#endif +#if defined (SIGQUIT) case SIGQUIT: +#endif rl_cleanup_after_signal (); #if defined (HAVE_POSIX_SIGNALS) @@ -158,7 +172,11 @@ rl_signal_handler (sig) signal (sig, SIG_ACK); #endif +#if defined (HAVE_KILL) kill (getpid (), sig); +#else + raise (sig); /* assume we have raise */ +#endif /* Let the signal that we just sent through. */ #if defined (HAVE_POSIX_SIGNALS) @@ -233,7 +251,7 @@ rl_set_sighandler (sig, handler, ohandler) struct sigaction act; act.sa_handler = handler; - act.sa_flags = 0; /* XXX - should we set SA_RESTART for SIGWINCH? */ + act.sa_flags = (sig == SIGWINCH) ? SA_RESTART : 0; sigemptyset (&act.sa_mask); sigemptyset (&ohandler->sa_mask); sigaction (sig, &act, &old_handler); @@ -275,8 +293,11 @@ rl_set_signals () { rl_maybe_set_sighandler (SIGINT, rl_signal_handler, &old_int); rl_maybe_set_sighandler (SIGTERM, rl_signal_handler, &old_term); +#if defined (SIGQUIT) rl_maybe_set_sighandler (SIGQUIT, rl_signal_handler, &old_quit); +#endif +#if defined (SIGALRM) oh = rl_set_sighandler (SIGALRM, rl_signal_handler, &old_alrm); if (oh == (SigHandler *)SIG_IGN) rl_sigaction (SIGALRM, &old_alrm, &dummy); @@ -288,6 +309,7 @@ rl_set_signals () 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); @@ -326,8 +348,12 @@ rl_clear_signals () rl_sigaction (SIGINT, &old_int, &dummy); rl_sigaction (SIGTERM, &old_term, &dummy); +#if defined (SIGQUIT) rl_sigaction (SIGQUIT, &old_quit, &dummy); +#endif +#if defined (SIGALRM) rl_sigaction (SIGALRM, &old_alrm, &dummy); +#endif #if defined (SIGTSTP) rl_sigaction (SIGTSTP, &old_tstp, &dummy); @@ -362,7 +388,8 @@ void rl_cleanup_after_signal () { _rl_clean_up_for_exit (); - (*rl_deprep_term_function) (); + if (rl_deprep_term_function) + (*rl_deprep_term_function) (); rl_clear_signals (); rl_clear_pending_input (); } @@ -371,7 +398,8 @@ rl_cleanup_after_signal () void rl_reset_after_signal () { - (*rl_prep_term_function) (_rl_meta_flag); + if (rl_prep_term_function) + (*rl_prep_term_function) (_rl_meta_flag); rl_set_signals (); } @@ -392,7 +420,7 @@ rl_free_line_state () _rl_kill_kbd_macro (); rl_clear_message (); - _rl_init_argument (); + _rl_reset_argument (); } #endif /* HANDLE_SIGNALS */ |