Add a generic plugin for use by simple Collections

This patch adds a generic plugin, exec.so, that should be sufficient for the
majority of Collection actions. After all packages in a Collection have been
installed/removed, this plugin executes the arguments by calling system(3),
allowing for a very generic and powerful method to perform many actions.

This also adds two sample macros as examples of the format, using the exec.so
plugin.

Makefile.am

@@ -19,9 +19,9 @@ endif
 if WITH_LUAEXT
 SUBDIRS += luaext
 endif
-SUBDIRS += rpmio lib build python scripts fileattrs doc . tests
+SUBDIRS += rpmio lib build python scripts fileattrs doc . tests plugins
 
-DIST_SUBDIRS = po misc luaext rpmio lib build python scripts fileattrs doc tests
+DIST_SUBDIRS = po misc luaext rpmio lib build python scripts fileattrs doc tests plugins
 
 pkgconfigdir = $(libdir)/pkgconfig
 

configure.ac

@@ -811,5 +811,6 @@ AC_CONFIG_FILES([Makefile
 	python/Makefile
  	luaext/Makefile
  	tests/Makefile
+ 	plugins/Makefile
   ])
 AC_OUTPUT

macros.in

@@ -1159,6 +1159,11 @@ done \
 %__urlhelper_proxyopts   %{?_httpproxy:--proxy %{_httpproxy}%{?_httpport::%{_httpport}}}%{!?_httpproxy:%{nil}}
 %_urlhelper             %{__urlhelpercmd} %{?__urlhelper_localopts} %{?__urlhelper_proxyopts} %{__urlhelperopts}
 
+#------------------------------------------------------------------------------
+# Collection specific macros
+%__plugindir		%{_rpmconfigdir}/plugins
+%__collection_font	%{__plugindir}/exec.so /usr/bin/fc-cache
+%__collection_java	%{__plugindir}/exec.so /usr/bin/rebuild-gcj-db
 
 # \endverbatim
 #*/

plugins/Makefile.am

@@ -0,0 +1,19 @@
+# Makefile for rpm library.
+
+include $(top_srcdir)/rpm.am
+
+AM_CPPFLAGS = -I$(top_builddir) -I$(top_srcdir) -I$(top_builddir)/include/
+AM_CPPFLAGS += -I$(top_srcdir)/misc
+AM_CPPFLAGS += -DLOCALEDIR="\"$(localedir)\""
+AM_CPPFLAGS += -DSYSCONFDIR="\"$(sysconfdir)\""
+AM_CPPFLAGS += -DLOCALSTATEDIR="\"$(localstatedir)\""
+AM_CPPFLAGS += -DLIBRPMALIAS_FILENAME="\"rpmpopt-${VERSION}\""
+
+AM_LDFLAGS = -avoid-version -module -shared
+
+pluginsdir = $(rpmconfigdir)/plugins
+
+plugins_LTLIBRARIES = exec.la
+
+exec_la_SOURCES = collection.h ../lib/rpmchroot.c exec.c
+exec_la_LIBADD = $(top_builddir)/lib/librpm.la $(top_builddir)/rpmio/librpmio.la

plugins/collection.h

@@ -0,0 +1,12 @@
+#include "system.h"
+
+#include <rpm/rpmlib.h>
+#include <rpm/rpmlog.h>
+#include <rpm/rpmts.h>
+
+#include "lib/collections.h"
+#include "lib/rpmchroot.h"
+
+rpmRC COLLHOOK_POST_ANY_FUNC(rpmts ts, const char * collname, const char * options);
+rpmRC COLLHOOK_POST_ADD_FUNC(rpmts ts, const char * collname, const char * options);
+rpmRC COLLHOOK_PRE_REMOVE_FUNC(rpmts ts, const char * collname, const char * options);

plugins/exec.c

@@ -0,0 +1,32 @@
+#include "collection.h"
+
+#include <sys/wait.h>
+
+rpmCollHook COLLECTION_HOOKS = COLLHOOK_POST_ANY;
+
+rpmRC COLLHOOK_POST_ANY_FUNC(rpmts ts, const char *collname,
+			     const char *options)
+{
+    int rc = RPMRC_FAIL;
+
+    if (rpmChrootIn()) {
+	goto exit;
+    }
+
+    if (options) {
+	int status = system(options);
+	if (!WIFEXITED(status) || WEXITSTATUS(status)) {
+	    rpmlog(RPMLOG_ERR, "%s collection action failed\n", collname);
+	    goto exit;
+	}
+    }
+
+    rc = RPMRC_OK;
+
+  exit:
+    if (rpmChrootOut()) {
+	rc = RPMRC_FAIL;
+    }
+
+    return rc;
+}