pmcheck plugins: overhead PMDA and pcp-zeroconf package

These two are not available for non-Linux systems, so for systems
like FreeBSD install an alternate plugin that can inform the use why
these components cannot be controlled with pmcheck.

This is a proof of concept, the same approach can be applied to
other "components" that are not unniversally available.

src/pmdas/overhead/GNUmakefile

@@ -53,7 +53,7 @@ install: build-me
 else
 build-me:
 install:
-	$(INSTALL) -m 755 overhead.pmcheck $(PCP_SHARE_DIR)/lib/pmcheck/pmda-overhead
+	$(INSTALL) -m 755 no.overhead.pmcheck $(PCP_SHARE_DIR)/lib/pmcheck/pmda-overhead
 endif
 
 $(CMDTARGET):	$(OBJECTS)

src/pmdas/overhead/no.overhead.pmcheck

@@ -0,0 +1,31 @@
+#!/bin/sh
+#
+# ohead PMDA "plugin" for pmcheck ...
+# this version is for distros/platforms/builds where the PMDA is not
+# available (currently anything other than Linux)
+#
+
+. $PCP_DIR/etc/pcp.env || exit 1
+. $PCP_SHARE_DIR/lib/checkproc.sh
+
+_do_args "$@"
+
+na="not currently available for `uname -s`"
+
+if $lflag
+then
+    [ "$verbose" -gt 0 ] && echo "PCP overhead PMDA - $na" ]
+elif $sflag
+then
+    status=2
+    [ "$verbose" -gt 0 ] && echo "overhead PMDA $na"
+elif $aflag || $dflag
+then
+    status=1
+    [ "$verbose" -gt 0 ] && echo "overhead PMDA $na"
+else
+    [ $verbose -gt 0 ] && echo "botch sflag=$sflag aflag=$aflag dflag=$dflag show_me=$show_me verbose=$verbose"
+    status=99
+fi
+
+exit

src/pmlogconf/GNUmakefile

@@ -46,9 +46,12 @@ SUBDIRS = \
 #
 ifeq "$(TARGET_OS)" "linux"
 SUBDIRS += zeroconf
+PMCHECK=zeroconf.pmcheck
+else
+PMCHECK=no.zeroconf.pmcheck
 endif
 
-default: $(CMDTARGET) pmrepconf makefiles zeroconf.pmcheck
+default: $(CMDTARGET) pmrepconf makefiles $(PMCHECK)
 
 include $(BUILDRULES)
 
@@ -57,7 +60,7 @@ install: default $(SUBDIRS)
 	$(INSTALL) -m 755 $(CMDTARGET) $(DISTARGET)
 	$(INSTALL) -S $(DISTARGET) $(PCP_BIN_DIR)/pmrepconf
 	$(INSTALL) -S $(DISTARGET) $(PCP_BINADM_DIR)/$(CMDTARGET)
-	$(INSTALL) -m 755 zeroconf.pmcheck $(PCP_SHARE_DIR)/lib/pmcheck/zeroconf
+	$(INSTALL) -m 755 $(PMCHECK) $(PCP_SHARE_DIR)/lib/pmcheck/zeroconf
 
 default_pcp : default
 

src/pmlogconf/no.zeroconf.pmcheck

@@ -0,0 +1,31 @@
+#!/bin/sh
+#
+# zeroconf "plugin" for pmcheck ...
+# this version is for distros/platforms/builds where the pcp-zeroconf
+# package is not available (currently anything other than Linux)
+#
+
+. $PCP_DIR/etc/pcp.env || exit 1
+. $PCP_SHARE_DIR/lib/checkproc.sh
+
+_do_args "$@"
+
+na="not currently available for `uname -s`"
+
+if $lflag
+then
+    [ "$verbose" -gt 0 ] && echo "PCP Zeroconf Package - $na"
+elif $sflag
+then
+    status=2
+    [ "$verbose" -gt 0 ] && echo "pcp-zeroconf package $na"
+elif $aflag || $dflag
+then
+    status=1
+    [ "$verbose" -gt 0 ] && echo "pcp-zeroconf package $na"
+else
+    [ $verbose -gt 0 ] && echo "botch sflag=$sflag aflag=$aflag dflag=$dflag show_me=$show_me verbose=$verbose"
+    status=99
+fi
+
+exit