mirror of
https://github.com/octoleo/lsyncd.git
synced 2024-09-28 06:59:01 +00:00
89 lines
1.4 KiB
C
89 lines
1.4 KiB
C
/*
|
|
| singal.c from Lsyncd -- the Live (Mirror) Syncing Demon
|
|
|
|
|
|
|
|
| Signal handling.
|
|
|
|
|
|
|
|
| License: GPLv2 (see COPYING) or any later version
|
|
| Authors: Axel Kittenberger <axkibe@gmail.com>
|
|
*/
|
|
|
|
#include "lsyncd.h"
|
|
|
|
#include <signal.h>
|
|
|
|
//#define LUA_USE_APICHECK 1
|
|
//#include <lua.h>
|
|
//#include <lualib.h>
|
|
//#include <lauxlib.h>
|
|
|
|
//#include "log.h"
|
|
//#include "mem.h"
|
|
//#include "util.h"
|
|
//#include "pipe.h"
|
|
//#include "observe.h"
|
|
//#include "time.h"
|
|
|
|
/*
|
|
| Set by TERM or HUP signal handler
|
|
| telling Lsyncd should end or reset ASAP.
|
|
*/
|
|
volatile sig_atomic_t hup = 0;
|
|
volatile sig_atomic_t term = 0;
|
|
volatile sig_atomic_t sigcode = 0;
|
|
|
|
|
|
/*
|
|
| signal handler
|
|
*/
|
|
static void signal_child( int sig )
|
|
{
|
|
// Nothing!
|
|
// This signal handler is just installed so the kernel
|
|
// keeps finished child processes as zombies waiting to be reaped.
|
|
}
|
|
|
|
|
|
/*
|
|
| signal handler
|
|
*/
|
|
static void
|
|
signal_handler( int sig )
|
|
{
|
|
switch( sig )
|
|
{
|
|
case SIGTERM:
|
|
case SIGINT:
|
|
term = 1;
|
|
sigcode = sig;
|
|
return;
|
|
|
|
case SIGHUP:
|
|
hup = 1;
|
|
return;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
| Initializes signal handling.
|
|
|
|
|
| Listens to SIGCHLD, but blocks it until pselect( )
|
|
| opens the signal handler up.
|
|
*/
|
|
void
|
|
signal_init( )
|
|
{
|
|
sigset_t set;
|
|
sigemptyset( &set );
|
|
sigaddset( &set, SIGCHLD );
|
|
signal( SIGCHLD, signal_child );
|
|
sigprocmask( SIG_BLOCK, &set, NULL );
|
|
|
|
signal( SIGHUP, signal_handler );
|
|
signal( SIGTERM, signal_handler );
|
|
signal( SIGINT, signal_handler );
|
|
}
|
|
|