1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*
* main.c
* (c) 2019, Jonas Gunz, jonasgunz.de
* <Description>
* License: MIT
*/
#include "main.h"
int main(int argc, char* argv[])
{
struct prog_params params = parse_args(argc, argv);
log_init_stdout( _LOG_DEBUG );
signal( SIGCHLD, SIG_IGN ); //Ignore sigchld
signal( SIGKILL, terminate);
signal( SIGINT, terminate);
//Fork and write PID to pidfile
if(params.fork)
{
FILE* pidfile = fopen(params.pidfile, "w");
if(!pidfile)
{
LOGPRINTF( _LOG_ERROR, "Unable to open pidfile\n" );
exit(1);
}
pid_t pid = fork();
if(pid < 0)
{
LOGPRINTF( _LOG_ERROR, "fork failed\n" );
exit(1);
}
else if(pid > 0)
{
fprintf( pidfile, "%i", pid );
LOGPRINTF( _LOG_NOTE, "Forked with PID %i\n\n", pid );
if( log_fd == STDIN_FILENO )
LOGPRINTF( _LOG_WARNING, "STDIO will be closed but no logfile is set. No logging possible\n" );
fclose ( pidfile );
exit( 0 );
}
fclose (pidfile);
//Close STDIO
close ( STDIN_FILENO );
close ( STDOUT_FILENO );
close ( STDERR_FILENO );
}//if params.fork
LOGPRINTF(_LOG_DEBUG, "command: %s, %i\n", params.run_argv[0], params.run_argc);
if ( params.serial )
dialup_server( params );
else if ( params.telnet )
telnet_server( params );
return 0;
}
void terminate()
{
log_close();
exit ( 1 );
}
|