From 4c502b005bfd24821e817c134e8a442a5f4606de Mon Sep 17 00:00:00 2001 From: Ivo Timmermans Date: Tue, 28 Nov 2000 08:59:27 +0000 Subject: [PATCH] Use sigaction to set signal handlers, the previous commit (1.1.2.16) already contained a large portion of what should have gone in this one. --- src/process.c | 39 +++++++++++++++++++++++---------------- 1 file changed, 23 insertions(+), 16 deletions(-) diff --git a/src/process.c b/src/process.c index 013b24df..695f1f7e 100644 --- a/src/process.c +++ b/src/process.c @@ -17,7 +17,7 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: process.c,v 1.1.2.16 2000/11/26 22:42:34 zarq Exp $ + $Id: process.c,v 1.1.2.17 2000/11/28 08:59:27 zarq Exp $ */ #include "config.h" @@ -54,6 +54,8 @@ extern char *identname; extern char *pidfilename; extern char **g_argv; +sigset_t emptysigset; + void memory_full(int size) { syslog(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exiting."), size); @@ -263,7 +265,7 @@ cp } else /* Something strange happened */ { - syslog(LOG_ERR, _("Process %d (%s) terminated abnormaly"), pid, name); + syslog(LOG_ERR, _("Process %d (%s) terminated abnormally"), pid, name); return -1; } } @@ -285,7 +287,7 @@ cp */ RETSIGTYPE -sigterm_handler(int a, siginfo_t *info, void *) +sigterm_handler(int a, siginfo_t *info, void *b) { if(debug_lvl > DEBUG_NOTHING) syslog(LOG_NOTICE, _("Got TERM signal")); @@ -294,7 +296,7 @@ sigterm_handler(int a, siginfo_t *info, void *) } RETSIGTYPE -sigquit_handler(int a, siginfo_t *info, void *) +sigquit_handler(int a, siginfo_t *info, void *b) { if(debug_lvl > DEBUG_NOTHING) syslog(LOG_NOTICE, _("Got QUIT signal")); @@ -302,7 +304,7 @@ sigquit_handler(int a, siginfo_t *info, void *) } RETSIGTYPE -sigsegv_square(int a, siginfo_t *info, void *) +sigsegv_square(int a, siginfo_t *info, void *b) { syslog(LOG_ERR, _("Got another SEGV signal: not restarting")); cp_trace(); @@ -310,15 +312,21 @@ sigsegv_square(int a, siginfo_t *info, void *) } RETSIGTYPE -sigsegv_handler(int a, siginfo_t *info, void *) +sigsegv_handler(int a, siginfo_t *info, void *b) { + struct sigaction act; syslog(LOG_ERR, _("Got SEGV signal")); cp_trace(); if(do_detach) { syslog(LOG_NOTICE, _("Trying to re-execute in 5 seconds...")); - signal(SIGSEGV, sigsegv_square); + + act.sa_handler = NULL; + act.sa_mask = emptysigset; + act.sa_flags = SA_SIGINFO; + act.sa_sigaction = sigsegv_square; + close_network_connections(); sleep(5); remove_pid(pidfilename); @@ -332,7 +340,7 @@ sigsegv_handler(int a, siginfo_t *info, void *) } RETSIGTYPE -sighup_handler(int a, siginfo_t *info, void *) +sighup_handler(int a, siginfo_t *info, void *b) { if(debug_lvl > DEBUG_NOTHING) syslog(LOG_NOTICE, _("Got HUP signal")); @@ -340,7 +348,7 @@ sighup_handler(int a, siginfo_t *info, void *) } RETSIGTYPE -sigint_handler(int a, siginfo_t *info, void *) +sigint_handler(int a, siginfo_t *info, void *b) { if(debug_lvl > DEBUG_NOTHING) syslog(LOG_NOTICE, _("Got INT signal, exiting")); @@ -348,19 +356,19 @@ sigint_handler(int a, siginfo_t *info, void *) } RETSIGTYPE -sigusr1_handler(int a, siginfo_t *info, void *) +sigusr1_handler(int a, siginfo_t *info, void *b) { dump_connection_list(); } RETSIGTYPE -sigusr2_handler(int a, siginfo_t *info, void *) +sigusr2_handler(int a, siginfo_t *info, void *b) { dump_subnet_list(); } RETSIGTYPE -sighuh(int a, siginfo_t *info, void *) +unexpected_signal_handler(int a, siginfo_t *info, void *b) { syslog(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a)); cp_trace(); @@ -386,19 +394,18 @@ void setup_signals(void) { int i; - sigset_t a; struct sigaction act; - sigemptyset(&a); + sigemptyset(&emptysigset); act.sa_handler = NULL; - act.sa_mask = a; + act.sa_mask = emptysigset; act.sa_flags = SA_SIGINFO; /* Set a default signal handler for every signal, errors will be ignored. */ for(i = 0; i < NSIG; i++) { - act.sa_sigaction = sighuh_handler; + act.sa_sigaction = unexpected_signal_handler; sigaction(sighandlers[i].signal, &act, NULL); } -- 2.20.1