Added driver settings and find_directory() support.

find_directory() is a very simplified implementation, only supporting
what we currently need.

src/build/libroot/Jamfile

@@ -9,7 +9,7 @@ UseHeaders [ FDirName $(HAIKU_TOP) headers build os interface ] : true ;
 UseHeaders [ FDirName $(HAIKU_TOP) headers build os storage ] : true ;
 UseHeaders [ FDirName $(HAIKU_TOP) headers build os support ] : true ;
 
-UsePrivateBuildHeaders kernel ;
+UsePrivateBuildHeaders kernel libroot ;
 
 {
 	local defines = [ FDefines
@@ -17,8 +17,15 @@ UsePrivateBuildHeaders kernel ;
 	] ;
 	SubDirCcFlags $(defines) ;
 	SubDirC++Flags $(defines) ;
+
+	local defines = [ FDefines
+		HAIKU_BUILD_GENERATED_DIRECTORY="\\\"$(HAIKU_OUTPUT_DIR)\\\""
+	] ;
+	SubDirC++Flags $(defines) ;
+	ObjectC++Flags find_directory.cpp : $(defines) ;
 }
 
+
 DEFINES += KMESSAGE_CONTAINER_ONLY ;
 ObjectC++Flags KMessage.cpp : $(HOST_BE_API_C++FLAGS) ;
 
@@ -44,6 +51,7 @@ local librootSources =
 	atomic.cpp
 	byteorder.cpp
 	errors.cpp
+	find_directory.cpp
 	fs.cpp
 	fs_attr.cpp
 	fs_descriptors.cpp
@@ -53,12 +61,16 @@ local librootSources =
 
 	$(hostPlatformSources)
 
+	driver_settings.cpp
+
 	$(strlSources)
 	strnlen.c
 
 	KMessage.cpp
 ;
 
+USES_BE_API on [ FGristFiles $(librootSources:S=$(SUFOBJ)) ] = true ;
+
 BuildPlatformSharedLibrary libroot_build.so :
 	$(librootSources)
 	:
@@ -70,6 +82,8 @@ BuildPlatformStaticLibrary libroot_build.a :
 	[ FGristFiles $(librootSources:S=$(SUFOBJ)) ]
 ;
 
+SEARCH on [ FGristFiles driver_settings.cpp ]
+	= [ FDirName $(HAIKU_TOP) src system libroot os ] ;
 SEARCH on [ FGristFiles $(strlSources) strnlen.c ]
 	= [ FDirName $(HAIKU_TOP) src system libroot posix string ] ;
 SEARCH on [ FGristFiles KMessage.cpp ]

src/build/libroot/find_directory.cpp

@@ -0,0 +1,97 @@
+/*
+ * Copyright 2004, François Revol.
+ * Copyright 2007-2010, Axel Dörfler, axeld@pinc-software.de.
+ * Copyright 2011, Oliver Tappe <zooey@hirschkaefer.de>
+ * Copyright 2011, Ingo Weinhold, ingo_weinhold@gmx.de.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include <FindDirectory.h>
+
+#include <errno.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <StorageDefs.h>
+
+
+#ifndef HAIKU_BUILD_GENERATED_DIRECTORY
+#	error HAIKU_BUILD_GENERATED_DIRECTORY not defined!
+#endif
+
+
+/*! make dir and its parents if needed */
+static int
+create_path(const char *path, mode_t mode)
+{
+	char buffer[B_PATH_NAME_LENGTH + 1];
+	int pathLength;
+	int i = 0;
+
+	if (path == NULL || ((pathLength = strlen(path)) > B_PATH_NAME_LENGTH))
+		return EINVAL;
+
+	while (++i < pathLength) {
+		const char *slash = strchr(&path[i], '/');
+		struct stat st;
+
+		if (slash == NULL)
+			i = pathLength;
+		else if (i != slash - path)
+			i = slash - path;
+		else
+			continue;
+
+		strlcpy(buffer, path, i + 1);
+		if (stat(buffer, &st) < 0) {
+			errno = 0;
+			if (mkdir(buffer, mode) < 0)
+				return errno;
+		}
+	}
+
+	return 0;
+}
+
+
+status_t
+find_directory(directory_which which, dev_t device, bool createIt,
+	char *returnedPath, int32 pathLength)
+{
+	// we support only the handful of paths we need
+	const char* path;
+	switch (which) {
+		case B_COMMON_TEMP_DIRECTORY:
+			path = HAIKU_BUILD_GENERATED_DIRECTORY "/tmp";
+			break;
+		case B_COMMON_SETTINGS_DIRECTORY:
+			path = HAIKU_BUILD_GENERATED_DIRECTORY "/common/settings";
+			break;
+		case B_COMMON_CACHE_DIRECTORY:
+			path = HAIKU_BUILD_GENERATED_DIRECTORY "/common/cache";
+			break;
+		case B_USER_SETTINGS_DIRECTORY:
+			path = HAIKU_BUILD_GENERATED_DIRECTORY "/user/settings";
+			break;
+		case B_USER_CACHE_DIRECTORY:
+			path = HAIKU_BUILD_GENERATED_DIRECTORY "/user/cache";
+			break;
+		default:
+			return B_BAD_VALUE;
+	}
+
+	// create, if necessary
+	status_t error = B_OK;
+	struct stat st;
+	if (createIt && stat(path, &st) < 0)
+		error = create_path(path, 0755);
+
+	if (error == B_OK)
+		strlcpy(returnedPath, path, pathLength);
+
+	return error;
+}
+