X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/a0732d0baf2d71a9360a2206b94236a0e3496097..899d08fea9e10d617afaa42f51f4abda76fc508f:/apt-pkg/algorithms.h

diff --git a/apt-pkg/algorithms.h b/apt-pkg/algorithms.h
index 210127ab9..02b40e15f 100644
--- a/apt-pkg/algorithms.h
+++ b/apt-pkg/algorithms.h
@@ -133,8 +133,21 @@ bool pkgMinimizeUpgrade(pkgDepCache &Cache);
 
 void pkgPrioSortList(pkgCache &Cache,pkgCache::Version **List);
 
-// mark all reachable packages, everything that is not reach can 
-// be removed
-bool pkgMarkUsed(pkgDepCache &Cache);
+
+// callback function that can be used by the client to bring in
+// certain own packages into the root set (if the client returns
+// True the package will be considered as part of the root set)
+typedef bool (*InRootSetFunc)(pkgCache::PkgIterator);
+
+// Mark all reachable packages with "pkgDepCache::StateCache.Marked=1"
+// the root-set are all essential packages+everything that was not 
+// installed automatically
+//
+// If InRootSetFunc is set, it will be called for each PkgIterator. This
+// is usefull for clients that have there own idea about the root-set
+// 
+// Everything that is not reach can be removed
+bool pkgMarkUsed(pkgDepCache &Cache, InRootSetFunc f=NULL);
+		 
 		     
 #endif