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Diffstat (limited to '')
| -rw-r--r-- | g10/signal.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/g10/signal.c b/g10/signal.c deleted file mode 100644 index 0517ba648..000000000 --- a/g10/signal.c +++ /dev/null @@ -1,217 +0,0 @@ -/* signal.c - signal handling - * Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc. - * - * This file is part of GnuPG. - * - * GnuPG 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 of the License, or - * (at your option) any later version. - * - * GnuPG 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 this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include <config.h> -#include <stdio.h> -#include <stdlib.h> -#include <signal.h> -#include <unistd.h> -#include <string.h> -#include <errno.h> -#include <assert.h> - -#include "options.h" -#include "errors.h" -#include "memory.h" -#include "util.h" -#include "main.h" -#include "ttyio.h" - - -static volatile int caught_fatal_sig = 0; -static volatile int caught_sigusr1 = 0; - -static void -init_one_signal (int sig, RETSIGTYPE (*handler)(int), int check_ign ) -{ - #ifndef HAVE_DOSISH_SYSTEM - #ifdef HAVE_SIGACTION - struct sigaction oact, nact; - - if (check_ign) { - /* we don't want to change an IGN handler */ - sigaction (sig, NULL, &oact ); - if (oact.sa_handler == SIG_IGN ) - return; - } - - nact.sa_handler = handler; - sigemptyset (&nact.sa_mask); - nact.sa_flags = 0; - sigaction ( sig, &nact, NULL); - #else - RETSIGTYPE (*ohandler)(int); - - ohandler = signal (sig, handler); - if (check_ign && ohandler == SIG_IGN) { - /* Change it back if it was already set to IGN */ - signal (sig, SIG_IGN); - } - #endif - #endif /*!HAVE_DOSISH_SYSTEM*/ -} - -static const char * -get_signal_name( int signum ) -{ - #if defined(SYS_SIGLIST_DECLARED) && defined(NSIG) - return (signum >= 0 && signum < NSIG) ? sys_siglist[signum] : "?"; - #else - return "some signal"; - #endif -} - - -static RETSIGTYPE -got_fatal_signal( int sig ) -{ - const char *s; - - if( caught_fatal_sig ) - raise( sig ); - caught_fatal_sig = 1; - - secmem_term(); - /* better don't transtale these messages */ - write(2, "\n", 1 ); - s = log_get_name(); if( s ) write(2, s, strlen(s) ); - write(2, ": ", 2 ); - s = get_signal_name(sig); write(2, s, strlen(s) ); - write(2, " caught ... exiting\n", 20 ); - - /* reset action to default action and raise signal again */ - init_one_signal (sig, SIG_DFL, 0); - remove_lockfiles (); -#ifdef __riscos__ - close_fds (); -#endif /* __riscos__ */ - raise( sig ); -} - - -static RETSIGTYPE -got_usr_signal( int sig ) -{ - caught_sigusr1 = 1; -} - - -void -init_signals() -{ - #ifndef HAVE_DOSISH_SYSTEM - init_one_signal (SIGINT, got_fatal_signal, 1 ); - init_one_signal (SIGHUP, got_fatal_signal, 1 ); - init_one_signal (SIGTERM, got_fatal_signal, 1 ); - init_one_signal (SIGQUIT, got_fatal_signal, 1 ); - init_one_signal (SIGSEGV, got_fatal_signal, 1 ); - init_one_signal (SIGUSR1, got_usr_signal, 0 ); - init_one_signal (SIGPIPE, SIG_IGN, 0 ); - #endif -} - - -void -pause_on_sigusr( int which ) -{ - #ifndef HAVE_DOSISH_SYSTEM - #ifdef HAVE_SIGPROCMASK - sigset_t mask, oldmask; - - assert( which == 1 ); - sigemptyset( &mask ); - sigaddset( &mask, SIGUSR1 ); - - sigprocmask( SIG_BLOCK, &mask, &oldmask ); - while( !caught_sigusr1 ) - sigsuspend( &oldmask ); - caught_sigusr1 = 0; - sigprocmask( SIG_UNBLOCK, &mask, NULL ); - #else - assert (which == 1); - sighold (SIGUSR1); - while (!caught_sigusr1) - sigpause(SIGUSR1); - caught_sigusr1 = 0; - sigrelse(SIGUSR1); ???? - #endif /*!HAVE_SIGPROCMASK*/ - #endif -} - - -static void -do_block( int block ) -{ - #ifndef HAVE_DOSISH_SYSTEM - static int is_blocked; - #ifdef HAVE_SIGPROCMASK - static sigset_t oldmask; - - if( block ) { - sigset_t newmask; - - if( is_blocked ) - log_bug("signals are already blocked\n"); - sigfillset( &newmask ); - sigprocmask( SIG_BLOCK, &newmask, &oldmask ); - is_blocked = 1; - } - else { - if( !is_blocked ) - log_bug("signals are not blocked\n"); - sigprocmask( SIG_SETMASK, &oldmask, NULL ); - is_blocked = 0; - } - #else /*!HAVE_SIGPROCMASK*/ - static void (*disposition[MAXSIG])(); - int sig; - - if( block ) { - if( is_blocked ) - log_bug("signals are already blocked\n"); - for (sig=1; sig < MAXSIG; sig++) { - disposition[sig] = sigset (sig, SIG_HOLD); - } - is_blocked = 1; - } - else { - if( !is_blocked ) - log_bug("signals are not blocked\n"); - for (sig=1; sig < MAXSIG; sig++) { - sigset (sig, disposition[sig]); - } - is_blocked = 0; - } - #endif /*!HAVE_SIGPROCMASK*/ - #endif /*HAVE_DOSISH_SYSTEM*/ -} - - -void -block_all_signals() -{ - do_block(1); -} - -void -unblock_all_signals() -{ - do_block(0); -} |