serval-dna/main.c
Andrew Bettison 21f51965c1 Overhaul Makefile and header files
Make .o files in separate subdirectories for servald and library
Factor struct __sourceloc and __WHENCE__ from "log.h" into "whence.h"
Factor sid_t etc from "serval.h" into "serval_types.h"
Factor rhizome_bid_t etc from "rhizome.h" into "rhizome_types.h"
Do not include "serval.h" in library sources
Add log_stderr.c and logMessage.c for stand-alone executables
2014-05-26 15:36:26 +09:30

72 lines
2.2 KiB
C

/*
Serval DNA daemon
Copyright (C) 2012 Serval Project Inc.
This program 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.
This program 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <signal.h>
#include "serval.h"
#include "conf.h"
static void crash_handler(int signal);
int main(int argc, char **argv)
{
#if defined WIN32
WSADATA wsa_data;
WSAStartup(MAKEWORD(1,1), &wsa_data);
#endif
/* Catch crash signals so that we can log a backtrace before expiring. */
struct sigaction sig;
sig.sa_handler = crash_handler;
sigemptyset(&sig.sa_mask); // Don't block any signals during handler
sig.sa_flags = SA_NODEFER | SA_RESETHAND; // So the signal handler can kill the process by re-sending the same signal to itself
sigaction(SIGSEGV, &sig, NULL);
sigaction(SIGFPE, &sig, NULL);
sigaction(SIGILL, &sig, NULL);
sigaction(SIGBUS, &sig, NULL);
sigaction(SIGABRT, &sig, NULL);
/* Setup i/o signal handlers */
signal(SIGPIPE,sigPipeHandler);
signal(SIGIO,sigIoHandler);
srandomdev();
cf_init();
int status = parseCommandLine(NULL, argv[0], argc - 1, (const char*const*)&argv[1]);
#if defined WIN32
WSACleanup();
#endif
return status;
}
char crash_handler_clue[1024] = "no clue";
static void crash_handler(int signal)
{
LOGF(LOG_LEVEL_FATAL, "Caught signal %s", alloca_signal_name(signal));
LOGF(LOG_LEVEL_FATAL, "The following clue may help: %s", crash_handler_clue);
dump_stack(LOG_LEVEL_FATAL);
BACKTRACE;
// Now die of the same signal, so that our exit status reflects the cause.
INFOF("Re-sending signal %d to self", signal);
kill(getpid(), signal);
// If that didn't work, then die normally.
INFOF("exit(%d)", -signal);
exit(-signal);
}