external/subpack/net/vnstat2/patches/100-noexit.patch

--- a/src/daemon.c
+++ b/src/daemon.c
@@ -252,6 +252,7 @@ void initdstate(DSTATE *s)
 	s->sync = 0;
 	s->forcesave = 0;
 	s->noadd = 0;
+	s->noexit = 0;
 	s->initdb = 0;
 	s->iflisthash = 0;
 	s->cfgfile[0] = '\0';
@@ -282,6 +283,9 @@ void preparedatabase(DSTATE *s)
 	}
 
 	if (s->noadd) {
+		if (s->noexit) {
+			return;
+		}
 		printf("No interfaces found in database, exiting.\n");
 		exit(EXIT_FAILURE);
 	}
@@ -300,6 +304,9 @@ void preparedatabase(DSTATE *s)
 	}
 
 	if (!addinterfaces(s) && s->dbifcount == 0) {
+		if (s->noexit) {
+			return;
+		}
 		printf("Nothing to do, exiting.\n");
 		exit(EXIT_FAILURE);
 	}
--- a/src/daemon.h
+++ b/src/daemon.h
@@ -4,7 +4,7 @@
 typedef struct {
 	int updateinterval, saveinterval;
 	short running, dodbsave, rundaemon;
-	short dbsaved, showhelp, sync, forcesave, noadd, initdb;
+	short dbsaved, showhelp, sync, forcesave, noadd, noexit, initdb;
 	short bootdetected, cleanuphour, dbretrycount;
 	uint32_t iflisthash;
 	uint64_t dbifcount;
--- a/src/vnstatd.c
+++ b/src/vnstatd.c
@@ -249,6 +249,7 @@ void showhelp(void)
 	printf("      --config <config file>   select used config file\n");
 	printf("      --noadd                  prevent startup if database has no interfaces\n");
 	printf("      --alwaysadd [mode]       automatically start monitoring all new interfaces\n");
+	printf("      --noexit                 keep running even when database has no interfaces\n");
 	printf("      --initdb                 create empty database and exit\n\n");
 
 	printf("See also \"man vnstatd\".\n");
@@ -322,6 +323,8 @@ void parseargs(DSTATE *s, int argc, char
 			} else {
 				cfg.alwaysadd = 1;
 			}
+		} else if (strcmp(argv[currentarg], "--noexit") == 0) {
+			s->noexit = 1;
 		} else if (strcmp(argv[currentarg], "--initdb") == 0) {
 			s->initdb = 1;
 			s->showhelp = 0;