Fixed heap troubles (and bugs in VFS_GetTruePath)

diff --git a/Kernel/heap.c b/Kernel/heap.c
index 97f2d9f..3f767eb 100644 (file)
--- a/Kernel/heap.c
+++ b/Kernel/heap.c
@@ -318,6 +318,9 @@ void Heap_Deallocate(void *Ptr)
        
        // Mark as free
        head->Magic = MAGIC_FREE;
+       head->File = NULL;
+       head->Line = 0;
+       head->ValidSize = 0;
        // Merge blocks
        Heap_Merge( head );
        
@@ -326,6 +329,11 @@ void Heap_Deallocate(void *Ptr)
 }
 
 /**
+ * \brief Increase/Decrease the size of an allocation
+ * \param File Calling File
+ * \param Line Calling Line
+ * \param __ptr        Old memory
+ * \param __size       New Size
  */
 void *Heap_Reallocate(const char *File, int Line, void *__ptr, size_t __size)
 {
@@ -351,6 +359,7 @@ void *Heap_Reallocate(const char *File, int Line, void *__ptr, size_t __size)
                // Exact Fit
                if(size == newSize) {
                        head->Size = newSize;
+                       head->ValidSize = __size;
                        head->File = File;
                        head->Line = Line;
                        foot->Head = head;
@@ -366,6 +375,7 @@ void *Heap_Reallocate(const char *File, int Line, void *__ptr, size_t __size)
                head->Size = newSize;   // Edit first header
                head->File = File;
                head->Line = Line;
+               head->ValidSize = __size;
                // Create new footer
                foot = (void*)( (Uint)head + newSize - sizeof(tHeapFoot) );
                foot->Head = head;
@@ -395,6 +405,7 @@ void *Heap_Reallocate(const char *File, int Line, void *__ptr, size_t __size)
                        nextHead->Size = newSize;
                        nextHead->File = File;
                        nextHead->Line = Line;
+                       nextHead->ValidSize = __size;
                        // Get 2nd (old) footer
                        foot = (void*)( (Uint)nextHead + newSize );
                        foot->Head = nextHead;
@@ -416,6 +427,7 @@ void *Heap_Reallocate(const char *File, int Line, void *__ptr, size_t __size)
        nextHead -= 1;
        nextHead->File = File;
        nextHead->Line = Line;
+       nextHead->ValidSize = __size;
        
        memcpy(
                nextHead->Data,
@@ -473,8 +485,8 @@ void Heap_Dump(void)
        while( (Uint)head < (Uint)gHeapEnd )
        {               
                foot = (void*)( (Uint)head + head->Size - sizeof(tHeapFoot) );
-               Log_Log("Heap", "%p (0x%llx): 0x%08lx %4C",
-                       head, MM_GetPhysAddr((Uint)head), head->Size, &head->Magic);
+               Log_Log("Heap", "%p (0x%llx): 0x%08lx (%i) %4C",
+                       head, MM_GetPhysAddr((Uint)head), head->Size, head->ValidSize, &head->Magic);
                Log_Log("Heap", "%p %4C", foot->Head, &foot->Magic);
                if(head->File) {
                        Log_Log("Heap", "%sowned by %s:%i",
@@ -523,8 +535,8 @@ void Heap_Dump(void)
        head = foot->Head;
        while( (tVAddr)head >= (tVAddr)badHead )
        {
-               Log_Log("Heap", "%p (0x%llx): 0x%08lx %4C",
-                       head, MM_GetPhysAddr((Uint)head), head->Size, &head->Magic);
+               Log_Log("Heap", "%p (0x%llx): 0x%08lx %i %4C",
+                       head, MM_GetPhysAddr((Uint)head), head->Size, head->ValidSize, &head->Magic);
                Log_Log("Heap", "%p %4C", foot->Head, &foot->Magic);
                if(head->File)
                        Log_Log("Heap", "%sowned by %s:%i",

diff --git a/Kernel/vfs/open.c b/Kernel/vfs/open.c
index a396465..118380f 100644 (file)
--- a/Kernel/vfs/open.c
+++ b/Kernel/vfs/open.c
@@ -191,8 +191,8 @@ tVFS_Node *VFS_ParsePath(const char *Path, char **TruePath)
                LEAVE('p', curNode);
                return curNode;
        }
-       // For root we always fast return
        
+       // For root we always fast return
        if(Path[0] == '/' && Path[1] == '\0') {
                if(TruePath) {
                        *TruePath = malloc( gVFS_RootMount->MountPointLen+1 );
@@ -202,7 +202,7 @@ tVFS_Node *VFS_ParsePath(const char *Path, char **TruePath)
                return gVFS_RootMount->RootNode;
        }
        
-       // Check if there is anything mounted
+       // Check if there is an`ything mounted
        if(!gVFS_Mounts) {
                Warning("WTF! There's nothing mounted?");
                return NULL;
@@ -260,7 +260,7 @@ tVFS_Node *VFS_ParsePath(const char *Path, char **TruePath)
        curNode->ReferenceCount ++;     
        // Parse Path
        ofs = mnt->MountPointLen+1;
-       for(; (nextSlash = strpos(&Path[ofs], '/')) != -1; ofs = nextSlash + 1)
+       for(; (nextSlash = strpos(&Path[ofs], '/')) != -1; ofs += nextSlash + 1)
        {
                char    pathEle[nextSlash+1];
                
@@ -319,11 +319,19 @@ tVFS_Node *VFS_ParsePath(const char *Path, char **TruePath)
                                free(*TruePath);
                                *TruePath = NULL;
                        }
-                       tmp = malloc( curNode->Size + 1 );
                        if(!curNode->Read) {
                                Warning("VFS_ParsePath - Read of node %p is NULL (%s)",
                                        curNode, Path);
                                if(curNode->Close)      curNode->Close(curNode);
+                               // No need to free *TruePath, see above
+                               LEAVE('n');
+                               return NULL;
+                       }
+                       
+                       tmp = malloc( curNode->Size + 1 );
+                       if(!tmp) {
+                               Log_Warning("VFS", "VFS_ParsePath - Malloc failure");
+                               // No need to free *TruePath, see above
                                LEAVE('n');
                                return NULL;
                        }
@@ -333,12 +341,13 @@ tVFS_Node *VFS_ParsePath(const char *Path, char **TruePath)
                        // Parse Symlink Path
                        curNode = VFS_ParsePath(tmp, TruePath);
                        if(TruePath)
-                               Log_Debug("VFS", "*TruePath='%s'", *TruePath);
+                               LOG("VFS", "*TruePath='%s'", *TruePath);
                        
                        // Error Check
                        if(!curNode) {
-                               Log("Symlink fail '%s'", tmp);
+                               Log_Debug("VFS", "Symlink fail '%s'", tmp);
                                free(tmp);      // Free temp string
+                               if(TruePath)    free(TruePath);
                                LEAVE('n');
                                return NULL;
                        }
@@ -367,11 +376,12 @@ tVFS_Node *VFS_ParsePath(const char *Path, char **TruePath)
                if(!TruePath)   continue;
                
                // Increase buffer space
-               tmp = realloc( *TruePath, retLength + strlen(&Path[ofs]) + 1 + 1 );
+               tmp = realloc( *TruePath, retLength + strlen(pathEle) + 1 + 1 );
                // Check if allocation succeeded
                if(!tmp) {
                        Warning("VFS_ParsePath -  Unable to reallocate true path buffer");
                        free(*TruePath);
+                       *TruePath = NULL;
                        if(curNode->Close)      curNode->Close(curNode);
                        LEAVE('n');
                        return NULL;
@@ -380,8 +390,11 @@ tVFS_Node *VFS_ParsePath(const char *Path, char **TruePath)
                // Append to path
                (*TruePath)[retLength] = '/';
                strcpy(*TruePath+retLength+1, pathEle);
+               
+               LOG("*TruePath = '%s'\n", *TruePath);
+               
                // - Extend Path
-               retLength += nextSlash;
+               retLength += nextSlash + 1;
        }
        
        // Get last node