+/*========== logging ==========*/
+
+static void logcore(int sysloglevel, const char *fmt, ...)
+ __attribute__((__format__(printf,2,3)));
+static void logcore(int sysloglevel, const char *fmt, ...) {
+ va_list al;
+ va_start(al,fmt);
+ if (become_daemon) {
+ vsyslog(sysloglevel,fmt,al);
+ } else {
+ vfprintf(stderr,fmt,al);
+ putc('\n',stderr);
+ }
+ va_end(al);
+}
+
+static void logv(int sysloglevel, const char *pfx, int errnoval,
+ int exitstatus, const char *fmt, va_list al)
+ __attribute__((__format__(printf,5,0)));
+static void logv(int sysloglevel, const char *pfx, int errnoval,
+ int exitstatus, const char *fmt, va_list al) {
+ char msgbuf[256];
+ vsnprintf(msgbuf,sizeof(msgbuf), fmt,al);
+ msgbuf[sizeof(msgbuf)-1]= 0;
+
+ if (sysloglevel >= LOG_ERR && (errnoval==EACCES || errnoval==EPERM))
+ sysloglevel= LOG_ERR; /* run by wrong user, probably */
+
+ logcore(sysloglevel, "<%s>%s: %s%s%s",
+ sitename, pfx, msgbuf,
+ errnoval>=0 ? ": " : "",
+ errnoval>=0 ? strerror(errnoval) : "");
+}
+
+#define logwrap(fn, pfx, sysloglevel, err, estatus) \
+ static void fn(const char *fmt, ...) \
+ __attribute__((__format__(printf,1,2))); \
+ static void fn(const char *fmt, ...) { \
+ va_list al; \
+ va_start(al,fmt); \
+ logv(sysloglevel, pfx, err, estatus, fmt, al); \
+ }
+
+logwrap(sysdie, " critical", LOG_CRIT, errno, 16);
+logwrap(die, " critical", LOG_CRIT, -1, 16);
+
+logwrap(sysfatal, " fatal", LOG_ERR, errno, 12);
+logwrap(fatal, " fatal", LOG_ERR, -1, 12);
+
+logwrap(syswarn, " warning", LOG_WARNING, errno, 0);
+logwrap(warn, " warning", LOG_WARNING, -1, 0);
+
+logwrap(notice, "", LOG_NOTICE, -1, 0);
+logwrap(info, " info", LOG_INFO, -1, 0);
+logwrap(debug, " debug", LOG_DEBUG, -1, 0);
+
+