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Rewriting signal handler, adding pid file support.

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This commit is contained in:
Meeh 2014-02-05 09:45:57 +01:00
parent 0dbb2ac557
commit 6afc32510b
1 changed files with 57 additions and 32 deletions
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59
i2p.cpp
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@ -25,8 +25,11 @@
int running = 1;
#ifndef _WIN32
void handle_sighup(int n)
void handle_signal(int sig)
{
switch (sig)
{
case SIGHUP:
if (i2p::util::config::GetArg("daemon", 0) == 1)
{
static bool first=true;
@ -38,10 +41,13 @@ void handle_sighup(int n)
}
LogPrint("Reloading config.");
i2p::util::filesystem::ReadConfigFile(i2p::util::config::mapArgs, i2p::util::config::mapMultiArgs);
}
void handle_shutdown(int sig)
{
break;
case SIGABRT:
case SIGTERM:
case SIGINT:
running = 0; // Exit loop
break;
}
}
#endif
@ -62,15 +68,6 @@ int main( int argc, char* argv[] )
i2p::util::filesystem::ReadConfigFile(i2p::util::config::mapArgs, i2p::util::config::mapMultiArgs);
#ifndef _WIN32
struct sigaction sa;
sa.sa_handler = handle_sighup;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGHUP,&sa,0) == -1)
{
LogPrint("Failed to install SIGHUP handler.");
}
if (i2p::util::config::GetArg("-daemon", 0) == 1)
{
pid_t pid;
@ -92,12 +89,36 @@ int main( int argc, char* argv[] )
LogPrint("Error, could not create process group.");
return -1;
}
chdir(i2p::util::filesystem::GetDataDir().string().c_str());
}
// Handle shutdown
signal(SIGABRT, &handle_shutdown);
signal(SIGTERM, &handle_shutdown);
signal(SIGINT, &handle_shutdown);
// Pidfile
std::string pidfile = i2p::util::filesystem::GetDataDir().string();
pidfile.append("/i2pd.pid");
int pidFilehandle = open(pidfile.c_str(), O_RDWR|O_CREAT, 0600);
if (pidFilehandle == -1 )
{
LogPrint("Error, could not create pid file (", pidfile, ")\nIs an instance already running?");
return -1;
}
if (lockf(pidFilehandle,F_TLOCK,0) == -1)
{
LogPrint("Error, could not create pid file (", pidfile, ")\nIs an instance already running?");
return -1;
}
char pid[10];
sprintf(pid,"%d\n",getpid());
write(pidFilehandle, pid, strlen(pid));
// Signal handler
struct sigaction sa;
sa.sa_handler = handle_signal;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sigaction(SIGHUP,&sa,0);
sigaction(SIGABRT,&sa,0);
sigaction(SIGTERM,&sa,0);
sigaction(SIGINT,&sa,0);
#endif
if (i2p::util::config::GetArg("-log", 0) == 1)
@ -140,5 +161,9 @@ int main( int argc, char* argv[] )
{
fclose (stdout);
}
#ifndef _WIN32
close(pidFilehandle);
unlink(pidfile.c_str());
#endif
return 0;
}