* vfs_normalize_path() and _user_normalize_path() use a common helper

function (normalize_path()), now. There was some code duplication
  before.
* Added "bool traverseLink" parameter to vfs_normalize_path(). When
  true and the leaf component is a symlink, it will be resolved.
* KPath:
  - Added similar leaf link traversal parameter to SetTo() and
    SetPath().
  - Added Normalize().
  - Added DetachBuffer(), which returns the object's current buffer and
    unsets itself.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27751 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/fs/KPath.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2004-2006, Ingo Weinhold, [email protected].
+ * Copyright 2004-2008, Ingo Weinhold, [email protected].
  * Distributed under the terms of the MIT License.
  */
 #ifndef _K_PATH_H
@@ -21,18 +21,21 @@ class KPath {
 		~KPath();
 
 		status_t SetTo(const char *path, bool normalize = false,
-			size_t bufferSize = B_PATH_NAME_LENGTH);
+			size_t bufferSize = B_PATH_NAME_LENGTH,
+			bool traverseLeafLink = false);
 		void Adopt(KPath& other);
 
 		status_t InitCheck() const;
 
-		status_t SetPath(const char *path, bool normalize = false);
+		status_t SetPath(const char *path, bool normalize = false,
+			bool traverseLeafLink = false);
 		const char *Path() const;
 		size_t Length() const { return fPathLength; }
 
 		size_t BufferSize() const { return fBufferSize; }
 		char *LockBuffer();
 		void UnlockBuffer();
+		char* DetachBuffer();
 
 		const char *Leaf() const;
 		status_t ReplaceLeaf(const char *newLeaf);
@@ -41,6 +44,8 @@ class KPath {
 
 		status_t Append(const char *toAppend, bool isComponent = true);
 
+		status_t Normalize(bool traverseLeafLink);
+
 		KPath& operator=(const KPath& other);
 		KPath& operator=(const char* path);
 

headers/private/kernel/vfs.h

@@ -128,7 +128,7 @@ status_t vfs_get_module_path(const char *basePath, const char *moduleName,
 
 /* service call for whoever needs a normalized path */
 status_t vfs_normalize_path(const char *path, char *buffer, size_t bufferSize,
-			bool kernel);
+			bool traverseLink, bool kernel);
 
 /* service call for whoever wants to create a special node */
 status_t vfs_create_special_node(const char *path, fs_vnode *subVnode,