core file is limited by a system by default

Config.cpp

@@ -62,7 +62,7 @@ namespace config {
 
     options_description limits("Limits options");
     limits.add_options()
-      ("limits.coresize",         value<uint32_t>()->default_value(0),    "Maximum size of corefile in Kb (0 - disable coredumps)")
+      ("limits.coresize",         value<uint32_t>()->default_value(0),    "Maximum size of corefile in Kb (0 - use system limit)")
       ("limits.openfiles",        value<uint16_t>()->default_value(0),    "Maximum number of open files (0 - use system default)")
       ("limits.transittunnels",   value<uint16_t>()->default_value(2500), "Maximum active transit sessions (default:2500)")
       ;

DaemonLinux.cpp

@@ -102,6 +102,8 @@ namespace i2p
 				LogPrint(eLogError, "Daemon: limits.openfiles exceeds system limit: ", limit.rlim_max);
 			}
 			uint32_t cfsize; i2p::config::GetOption("limits.coresize", cfsize);
+			if (cfsize) // core file size set
+			{	
 	  			cfsize *= 1024;
 				getrlimit(RLIMIT_CORE, &limit);
 				if (cfsize <= limit.rlim_max) {
@@ -116,6 +118,7 @@ namespace i2p
 				} else {
 					LogPrint(eLogError, "Daemon: limits.coresize exceeds system limit: ", limit.rlim_max);
 				}
+			}	
 
 			// Pidfile
 			// this code is c-styled and a bit ugly, but we need fd for locking pidfile

docs/configuration.md

@@ -88,6 +88,8 @@ All options below still possible in cmdline, but better write it in config file:
 * --addressbook.subscriptions=  - AddressBook subscriptions URLs, separated by comma
 
 * --limits.transittunnels=  - Override maximum number of transit tunnels. 2500 by default   
+* --limits.openfiles=	- Maximum size of corefile in Kb (0 - use system limit)  
+* --limits.coresize=	- Maximum size of corefile in Kb (0 - use system limit)  
 
 Config files
 ------------