[Aggregator] Daemon mode (-D)

owlps-aggregator/owlps-aggregator.h

@@ -9,7 +9,7 @@
 
 
 /* Arguments & program configuration */
-#define OPTIONS "a:Ac:C:f:hi:k:K:l:o:p:qt:vV" // getopt string
+#define OPTIONS "a:Ac:C:Df:hi:k:K:l:o:p:qt:vV" // getopt string
 #define DEFAULT_CONFIG_FILE "/usr/local/etc/owlps/owlps-aggregator.conf"
 #define DEFAULT_AGGREGATE_TIMEOUT 1500 // milliseconds
 #define DEFAULT_KEEP_TIMEOUT 3000 // milliseconds

owlps-aggregator/owlps-aggregatord.c

@@ -102,6 +102,14 @@ int main(int argc, char **argv)
         }
     }
 
+  if (cfg_getbool(cfg, "daemon"))
+    {
+      if (VERBOSE_WARNING)
+        fprintf(stderr, "Detaching to background...\n") ;
+      if (daemon(0, 0))
+        perror("Cannot daemonize") ;
+    }
+
   ret = read_loop(sockfd) ;
 
   /* Wait for the threads to terminate */
@@ -197,6 +205,9 @@ int parse_config_file(int argc, char **argv)
   // Config file options for confuse
   cfg_opt_t opts[] =
     {
+      // Daemon mode
+      CFG_BOOL("daemon", cfg_false, CFGF_NONE),
+
       // Verbose level
       CFG_INT("verbose", 0, CFGF_NONE),
 
@@ -307,6 +318,9 @@ int parse_command_line(int argc, char **argv)
         case 'C' :
           cfg_setint(cfg, "ap_check_interval", strtol(optarg, NULL, 0)) ;
           break ;
+        case 'D' :
+          cfg_setbool(cfg, "daemon", cfg_true) ;
+          break ;
         case 'f' : // Config file
           break ; // (already parsed)
         case 'i' :
@@ -1309,6 +1323,7 @@ void print_usage()
   printf("Usage:\n"
          "\t%s"
          " [-f config_file]"
+         " [-D]"
          " [-v[v[v[v]]] | -q]"
          " -o output_file"
          " [-i positionner_ip]"
@@ -1330,6 +1345,7 @@ void print_usage()
          "\t-V\t\tShow version information.\n"
          "\t-f config_file\tUse 'config_file' instead of the default"
          " configuration file (%s).\n"
+         "\t-D\t\tDaemon mode.\n"
          "\t-v\t\tBe verbose. You can use this option up to 4 times to"
          " increase the level of verbosity (1 = warnings, 2 = useful"
          " information, 3 = too much information, 4 = displays the"