Add install path support to packagefs

src/add-ons/kernel/file_systems/packagefs/Package.cpp

@@ -31,6 +31,7 @@ Package::Package(PackageDomain* domain, dev_t deviceID, ino_t nodeID)
 	fDomain(domain),
 	fFileName(NULL),
 	fName(NULL),
+	fInstallPath(NULL),
 	fVersion(NULL),
 	fArchitecture(B_PACKAGE_ARCHITECTURE_ENUM_COUNT),
 	fLinkDirectory(NULL),
@@ -56,6 +57,7 @@ Package::~Package()
 
 	free(fFileName);
 	free(fName);
+	free(fInstallPath);
 	delete fVersion;
 
 	mutex_destroy(&fLock);
@@ -87,6 +89,20 @@ Package::SetName(const char* name)
 }
 
 
+status_t
+Package::SetInstallPath(const char* installPath)
+{
+	if (fInstallPath != NULL)
+		free(fInstallPath);
+
+	fInstallPath = strdup(installPath);
+	if (fInstallPath == NULL)
+		RETURN_ERROR(B_NO_MEMORY);
+
+	return B_OK;
+}
+
+
 void
 Package::SetVersion(::Version* version)
 {

src/add-ons/kernel/file_systems/packagefs/Package.h

@@ -44,6 +44,9 @@ public:
 			status_t			SetName(const char* name);
 			const char*			Name() const		{ return fName; }
 
+			status_t			SetInstallPath(const char* installPath);
+			const char*			InstallPath() const	{ return fInstallPath; }
+
 			void				SetVersion(::Version* version);
 									// takes over object ownership
 			::Version*			Version() const
@@ -83,6 +86,7 @@ private:
 			PackageDomain*		fDomain;
 			char*				fFileName;
 			char*				fName;
+			char*				fInstallPath;
 			::Version*			fVersion;
 			BPackageArchitecture fArchitecture;
 			PackageLinkDirectory* fLinkDirectory;

src/add-ons/kernel/file_systems/packagefs/PackageLinkSymlink.cpp

@@ -92,8 +92,11 @@ PackageLinkSymlink::Update(Package* package, PackageLinksListener* listener)
 	OldAttributes oldAttributes(fModifiedTime, FileSize());
 
 	if (package != NULL) {
-		fLinkPath = link_path_for_mount_type(
-			package->Domain()->Volume()->MountType());
+		fLinkPath = package->InstallPath();
+		if (fLinkPath == NULL) {
+			fLinkPath = link_path_for_mount_type(
+				package->Domain()->Volume()->MountType());
+		}
 	} else
 		fLinkPath = kUnknownLinkTarget;
 

src/add-ons/kernel/file_systems/packagefs/Volume.cpp

@@ -291,6 +291,9 @@ struct Volume::PackageLoaderContentHandler : BPackageContentHandler {
 			case B_PACKAGE_INFO_NAME:
 				return fPackage->SetName(value.string);
 
+			case B_PACKAGE_INFO_INSTALL_PATH:
+				return fPackage->SetInstallPath(value.string);
+
 			case B_PACKAGE_INFO_VERSION:
 			{
 				Version* version;