mirror of
https://github.com/EnderIce2/Fennix.git
synced 2025-07-25 06:01:43 +00:00
Kernel/tasking-test
This commit is contained in:
EnderIce2
@@ -1,628 +0,0 @@
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#include <filesystem.hpp>
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#include <smartptr.hpp>
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#include <convert.h>
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#include <printf.h>
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#include <lock.hpp>
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#include <cwalk.h>
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#include <sys.h>
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#include "../kernel.h"
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// show debug messages
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// #define DEBUG_FILESYSTEM 1
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#ifdef DEBUG_FILESYSTEM
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#define vfsdbg(m, ...) debug(m, ##__VA_ARGS__)
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#else
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#define vfsdbg(m, ...)
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#endif
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NewLock(VFSLock);
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namespace VirtualFileSystem
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{
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shared_ptr<char> Virtual::GetPathFromNode(Node *node)
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{
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vfsdbg("GetPathFromNode( Node: \"%s\" )", node->Name);
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Node *Parent = node;
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char **Path = nullptr;
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size_t Size = 1;
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size_t PathSize = 0;
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// Traverse the filesystem tree and build the path by adding each parent's Name field to the Path array
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while (Parent != FileSystemRoot && Parent != nullptr)
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{
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bool Found = false;
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foreach (const auto &Children in FileSystemRoot->Children)
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if (Children == Parent)
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{
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Found = true;
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break;
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}
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if (Found)
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break;
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if (strlen(Parent->Name) == 0)
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break;
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char **new_path = new char *[PathSize + 1];
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if (Path != nullptr)
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{
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memcpy(new_path, Path, sizeof(char *) * PathSize);
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delete[] Path;
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}
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Path = new_path;
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Path[PathSize] = Parent->Name;
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PathSize++;
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new_path = new char *[PathSize + 1];
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memcpy(new_path, Path, sizeof(char *) * PathSize);
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delete[] Path;
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Path = new_path;
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Path[PathSize] = (char *)"/";
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PathSize++;
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Parent = Parent->Parent;
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}
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// Calculate the total size of the final path string
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for (size_t i = 0; i < PathSize; i++)
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{
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Size += strlen(Path[i]);
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}
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// Allocate a new string for the final path
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shared_ptr<char> FinalPath;
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FinalPath.reset(new char[Size]);
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size_t Offset = 0;
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// Concatenate the elements of the Path array into the FinalPath string
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for (size_t i = PathSize - 1; i < PathSize; i--)
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{
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if (Path[i] == nullptr)
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{
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continue;
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}
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size_t ElementSize = strlen(Path[i]);
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memcpy(FinalPath.Get() + Offset, Path[i], ElementSize);
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Offset += ElementSize;
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}
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// Add a null terminator to the final path string
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FinalPath.Get()[Size - 1] = '\0';
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// Deallocate the Path array
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delete[] Path, Path = nullptr;
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vfsdbg("GetPathFromNode()->\"%s\"", FinalPath.Get());
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return FinalPath;
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}
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Node *Virtual::GetNodeFromPath(const char *Path, Node *Parent)
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{
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vfsdbg("GetNodeFromPath( Path: \"%s\" Parent: \"%s\" )", Path, Parent ? Parent->Name : "(null)");
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Node *ReturnNode = Parent;
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bool IsAbsolutePath = cwk_path_is_absolute(Path);
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if (!ReturnNode)
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ReturnNode = FileSystemRoot->Children[0]; // 0 - filesystem root
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if (IsAbsolutePath)
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ReturnNode = FileSystemRoot->Children[0]; // 0 - filesystem root
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cwk_segment segment;
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if (unlikely(!cwk_path_get_first_segment(Path, &segment)))
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{
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error("Path doesn't have any segments.");
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return nullptr;
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}
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do
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{
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char *SegmentName = new char[segment.end - segment.begin + 1];
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memcpy(SegmentName, segment.begin, segment.end - segment.begin);
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vfsdbg("GetNodeFromPath()->SegmentName: \"%s\"", SegmentName);
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GetNodeFromPathNextParent:
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foreach (auto Child in ReturnNode->Children)
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{
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vfsdbg("comparing \"%s\" with \"%s\"", Child->Name, SegmentName);
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if (strcmp(Child->Name, SegmentName) == 0)
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{
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ReturnNode = Child;
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goto GetNodeFromPathNextParent;
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}
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}
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delete[] SegmentName;
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} while (cwk_path_get_next_segment(&segment));
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const char *basename;
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cwk_path_get_basename(Path, &basename, nullptr);
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vfsdbg("BaseName: \"%s\" NodeName: \"%s\"", basename, ReturnNode->Name);
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if (strcmp(basename, ReturnNode->Name) == 0)
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{
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vfsdbg("GetNodeFromPath()->\"%s\"", ReturnNode->Name);
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return ReturnNode;
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}
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vfsdbg("GetNodeFromPath()->\"(null)\"");
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return nullptr;
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}
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shared_ptr<File> Virtual::ConvertNodeToFILE(Node *node)
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{
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shared_ptr<File> file = make_shared<File>();
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file->Status = FileStatus::OK;
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file->node = node;
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return file;
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}
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Node *Virtual::GetParent(const char *Path, Node *Parent)
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{
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vfsdbg("GetParent( Path: \"%s\" Parent: \"%s\" )", Path, Parent->Name);
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if (Parent)
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{
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vfsdbg("GetParent()->\"%s\"", Parent->Name);
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return Parent;
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}
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Node *ParentNode = nullptr;
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if (FileSystemRoot->Children.size() >= 1)
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{
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if (FileSystemRoot->Children[0] == nullptr)
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panic("Root node is null!");
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ParentNode = FileSystemRoot->Children[0]; // 0 - filesystem root
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}
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else
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{
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// TODO: Check if here is a bug or something...
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const char *PathCopy;
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PathCopy = (char *)Path;
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size_t length;
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cwk_path_get_root(PathCopy, &length); // not working?
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if (length > 0)
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{
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foreach (auto Child in FileSystemRoot->Children)
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{
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if (strcmp(Child->Name, PathCopy) == 0)
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{
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ParentNode = Child;
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break;
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}
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}
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}
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}
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vfsdbg("GetParent()->\"%s\"", ParentNode->Name);
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return ParentNode;
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}
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Node *Virtual::AddNewChild(const char *Name, Node *Parent)
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{
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if (!Parent)
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{
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error("Parent is null!");
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return nullptr;
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}
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vfsdbg("AddNewChild( Name: \"%s\" Parent: \"%s\" )", Name, Parent->Name);
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Node *newNode = new Node;
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newNode->Parent = Parent;
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strcpy(newNode->Name, Name);
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newNode->Operator = Parent->Operator;
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Parent->Children.push_back(newNode);
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vfsdbg("AddNewChild()->\"%s\"", newNode->Name);
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return newNode;
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}
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Node *Virtual::GetChild(const char *Name, Node *Parent)
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{
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vfsdbg("GetChild( Name: \"%s\" Parent: \"%s\" )", Name, Parent->Name);
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if (!Parent)
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{
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vfsdbg("GetChild()->nullptr");
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return nullptr;
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}
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foreach (auto Child in Parent->Children)
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if (strcmp(Child->Name, Name) == 0)
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{
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vfsdbg("GetChild()->\"%s\"", Child->Name);
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return Child;
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}
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vfsdbg("GetChild()->nullptr (not found)");
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return nullptr;
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}
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FileStatus Virtual::RemoveChild(const char *Name, Node *Parent)
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{
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vfsdbg("RemoveChild( Name: \"%s\" Parent: \"%s\" )", Name, Parent->Name);
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for (size_t i = 0; i < Parent->Children.size(); i++)
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{
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if (strcmp(Parent->Children[i]->Name, Name) == 0)
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{
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delete Parent->Children[i], Parent->Children[i] = nullptr;
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Parent->Children.remove(i);
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vfsdbg("RemoveChild()->OK");
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return FileStatus::OK;
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}
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}
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vfsdbg("RemoveChild()->NotFound");
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return FileStatus::NotFound;
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}
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shared_ptr<char> Virtual::NormalizePath(const char *Path, Node *Parent)
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{
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vfsdbg("NormalizePath( Path: \"%s\" Parent: \"%s\" )", Path, Parent->Name);
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char *NormalizedPath = new char[strlen((char *)Path) + 1];
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shared_ptr<char> RelativePath;
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cwk_path_normalize(Path, NormalizedPath, strlen((char *)Path) + 1);
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if (cwk_path_is_relative(NormalizedPath))
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{
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shared_ptr<char> ParentPath = GetPathFromNode(Parent);
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size_t PathSize = cwk_path_get_absolute(ParentPath.Get(), NormalizedPath, nullptr, 0);
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RelativePath.reset(new char[PathSize + 1]);
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cwk_path_get_absolute(ParentPath.Get(), NormalizedPath, RelativePath.Get(), PathSize + 1);
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}
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else
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{
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RelativePath.reset(new char[strlen(NormalizedPath) + 1]);
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strcpy(RelativePath.Get(), NormalizedPath);
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}
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delete[] NormalizedPath;
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vfsdbg("NormalizePath()->\"%s\"", RelativePath.Get());
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return RelativePath;
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}
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bool Virtual::PathExists(const char *Path, Node *Parent)
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{
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if (isempty((char *)Path))
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{
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vfsdbg("PathExists()->PathIsEmpty");
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return false;
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}
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if (Parent == nullptr)
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Parent = FileSystemRoot;
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vfsdbg("PathExists( Path: \"%s\" Parent: \"%s\" )", Path, Parent->Name);
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if (GetNodeFromPath(NormalizePath(Path, Parent).Get(), Parent))
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{
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vfsdbg("PathExists()->OK");
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return true;
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}
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vfsdbg("PathExists()->NotFound");
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return false;
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}
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Node *Virtual::CreateRoot(const char *RootName, FileSystemOperations *Operator)
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{
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if (Operator == nullptr)
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return nullptr;
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vfsdbg("Creating root %s", RootName);
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Node *newNode = new Node;
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strncpy(newNode->Name, RootName, FILENAME_LENGTH);
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newNode->Flags = NodeFlags::DIRECTORY;
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newNode->Operator = Operator;
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FileSystemRoot->Children.push_back(newNode);
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return newNode;
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}
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/* TODO: Further testing needed */
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Node *Virtual::Create(const char *Path, NodeFlags Flag, Node *Parent)
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{
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SmartLock(VFSLock);
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if (isempty((char *)Path))
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return nullptr;
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Node *RootNode = FileSystemRoot->Children[0];
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Node *CurrentParent = this->GetParent(Path, Parent);
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vfsdbg("Virtual::Create( Path: \"%s\" Parent: \"%s\" )", Path, Parent ? Parent->Name : CurrentParent->Name);
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shared_ptr<char> CleanPath = this->NormalizePath(Path, CurrentParent);
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vfsdbg("CleanPath: \"%s\"", CleanPath.Get());
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if (PathExists(CleanPath.Get(), CurrentParent))
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{
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error("Path %s already exists.", CleanPath.Get());
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goto CreatePathError;
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}
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cwk_segment segment;
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if (!cwk_path_get_first_segment(CleanPath.Get(), &segment))
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{
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error("Path doesn't have any segments.");
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goto CreatePathError;
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}
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do
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{
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char *SegmentName = new char[segment.end - segment.begin + 1];
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memcpy(SegmentName, segment.begin, segment.end - segment.begin);
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vfsdbg("SegmentName: \"%s\"", SegmentName);
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if (Parent)
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if (GetChild(SegmentName, RootNode) != nullptr)
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{
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RootNode = GetChild(SegmentName, RootNode);
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delete[] SegmentName;
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continue;
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}
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if (GetChild(SegmentName, CurrentParent) == nullptr)
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{
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CurrentParent = AddNewChild(SegmentName, CurrentParent);
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CurrentParent->Flags = Flag;
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}
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else
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{
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CurrentParent = GetChild(SegmentName, CurrentParent);
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}
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delete[] SegmentName;
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} while (cwk_path_get_next_segment(&segment));
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vfsdbg("Virtual::Create()->\"%s\"", CurrentParent->Name);
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vfsdbg("Path created: \"%s\"", GetPathFromNode(CurrentParent).Get());
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return CurrentParent;
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CreatePathError:
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vfsdbg("Virtual::Create()->nullptr");
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return nullptr;
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}
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FileStatus Virtual::Delete(const char *Path, bool Recursive, Node *Parent)
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{
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SmartLock(VFSLock);
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vfsdbg("Virtual::Delete( Path: \"%s\" Parent: \"%s\" )", Path, Parent ? Parent->Name : "(null)");
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if (isempty((char *)Path))
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return InvalidParameter;
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if (Parent == nullptr)
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Parent = FileSystemRoot;
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shared_ptr<char> CleanPath = this->NormalizePath(Path, Parent);
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vfsdbg("CleanPath: \"%s\"", CleanPath.Get());
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if (!PathExists(CleanPath.Get(), Parent))
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{
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vfsdbg("Path %s doesn't exist.", CleanPath.Get());
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return InvalidPath;
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}
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Node *NodeToDelete = GetNodeFromPath(CleanPath.Get(), Parent);
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Node *ParentNode = GetParent(CleanPath.Get(), Parent);
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if (NodeToDelete->Flags == NodeFlags::DIRECTORY)
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{
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if (Recursive)
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{
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foreach (auto Child in NodeToDelete->Children)
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{
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VFSLock.Unlock();
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FileStatus Status = Delete(GetPathFromNode(Child).Get(), true);
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VFSLock.Lock(__FUNCTION__);
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if (Status != FileStatus::OK)
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{
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vfsdbg("Failed to delete child %s with status %d. (%s)", Child->Name, Status, Path);
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return PartiallyCompleted;
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}
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}
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}
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else if (NodeToDelete->Children.size() > 0)
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{
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vfsdbg("Directory %s is not empty.", CleanPath.Get());
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return DirectoryNotEmpty;
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}
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}
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if (RemoveChild(NodeToDelete->Name, ParentNode) != FileStatus::OK)
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{
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vfsdbg("Failed to remove child %s from parent %s. (%s)", NodeToDelete->Name, ParentNode->Name, Path);
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return NotFound;
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}
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vfsdbg("Virtual::Delete()->OK");
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return OK;
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}
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FileStatus Virtual::Delete(Node *Path, bool Recursive, Node *Parent) { return Delete(GetPathFromNode(Path).Get(), Recursive, Parent); }
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|
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/* TODO: REWORK */
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shared_ptr<File> Virtual::Mount(const char *Path, FileSystemOperations *Operator)
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{
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SmartLock(VFSLock);
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shared_ptr<File> file = make_shared<File>();
|
||||
|
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if (unlikely(!Operator))
|
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{
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file->Status = FileStatus::InvalidOperator;
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return file;
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}
|
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|
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if (unlikely(isempty((char *)Path)))
|
||||
{
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file->Status = FileStatus::InvalidParameter;
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return file;
|
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}
|
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|
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vfsdbg("Mounting %s", Path);
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const char *PathCopy;
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cwk_path_get_basename(Path, &PathCopy, 0);
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strcpy(file->Name, PathCopy);
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file->Status = FileStatus::OK;
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file->node = Create(Path, NodeFlags::MOUNTPOINT);
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file->node->Operator = Operator;
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return file;
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}
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FileStatus Virtual::Unmount(shared_ptr<File> File)
|
||||
{
|
||||
SmartLock(VFSLock);
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||||
if (unlikely(File.Get()))
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||||
return FileStatus::InvalidParameter;
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||||
fixme("Unmounting %s", File->Name);
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return FileStatus::OK;
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||||
}
|
||||
|
||||
size_t Virtual::Read(shared_ptr<File> File, size_t Offset, uint8_t *Buffer, size_t Size)
|
||||
{
|
||||
SmartLock(VFSLock);
|
||||
if (unlikely(!File.Get()))
|
||||
return 0;
|
||||
|
||||
if (unlikely(!File->node))
|
||||
{
|
||||
File->Status = FileStatus::InvalidNode;
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||||
return 0;
|
||||
}
|
||||
|
||||
if (unlikely(!File->node->Operator))
|
||||
{
|
||||
File->Status = FileStatus::InvalidOperator;
|
||||
return 0;
|
||||
}
|
||||
|
||||
File->Status = FileStatus::OK;
|
||||
|
||||
vfsdbg("Reading %s out->%016x", File->Name, Buffer);
|
||||
return File->node->Operator->Read(File->node, Offset, Size, Buffer);
|
||||
}
|
||||
|
||||
size_t Virtual::Write(shared_ptr<File> File, size_t Offset, uint8_t *Buffer, size_t Size)
|
||||
{
|
||||
SmartLock(VFSLock);
|
||||
if (unlikely(!File.Get()))
|
||||
return 0;
|
||||
|
||||
if (unlikely(!File->node))
|
||||
{
|
||||
File->Status = FileStatus::InvalidNode;
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (unlikely(!File->node->Operator))
|
||||
{
|
||||
File->Status = FileStatus::InvalidOperator;
|
||||
return 0;
|
||||
}
|
||||
|
||||
File->Status = FileStatus::OK;
|
||||
|
||||
vfsdbg("Writing %s out->%016x", File->Name, Buffer);
|
||||
return File->node->Operator->Write(File->node, Offset, Size, Buffer);
|
||||
}
|
||||
|
||||
/* TODO: CHECK Open */
|
||||
shared_ptr<File> Virtual::Open(const char *Path, Node *Parent)
|
||||
{
|
||||
SmartLock(VFSLock);
|
||||
vfsdbg("Opening %s with parent %s", Path, Parent ? Parent->Name : "(null)");
|
||||
const char *basename;
|
||||
|
||||
if (strcmp(Path, ".") == 0)
|
||||
{
|
||||
shared_ptr<File> file = make_shared<File>();
|
||||
file->node = Parent;
|
||||
if (unlikely(!file->node))
|
||||
file->Status = FileStatus::NotFound;
|
||||
cwk_path_get_basename(GetPathFromNode(Parent).Get(), &basename, nullptr);
|
||||
strcpy(file->Name, basename);
|
||||
return file;
|
||||
}
|
||||
|
||||
if (strcmp(Path, "..") == 0)
|
||||
{
|
||||
shared_ptr<File> file = make_shared<File>();
|
||||
|
||||
if (Parent->Parent != nullptr)
|
||||
file->node = Parent->Parent;
|
||||
|
||||
if (!file->node)
|
||||
file->Status = FileStatus::NotFound;
|
||||
cwk_path_get_basename(GetPathFromNode(Parent).Get(), &basename, nullptr);
|
||||
strcpy(file->Name, basename);
|
||||
return file;
|
||||
}
|
||||
|
||||
Node *CurrentParent = this->GetParent(Path, Parent);
|
||||
shared_ptr<char> CleanPath = NormalizePath(Path, CurrentParent);
|
||||
|
||||
shared_ptr<File> file = make_shared<File>();
|
||||
/* TODO: Check for other errors */
|
||||
|
||||
if (!PathExists(CleanPath.Get(), CurrentParent))
|
||||
{
|
||||
foreach (auto Child in FileSystemRoot->Children)
|
||||
{
|
||||
if (strcmp(Child->Name, CleanPath.Get()) == 0)
|
||||
{
|
||||
file->node = Child;
|
||||
if (file->node == nullptr)
|
||||
{
|
||||
file->Status = FileStatus::UnknownFileStatusError;
|
||||
file->node = nullptr;
|
||||
return file;
|
||||
}
|
||||
cwk_path_get_basename(GetPathFromNode(Child).Get(), &basename, nullptr);
|
||||
strcpy(file->Name, basename);
|
||||
return file;
|
||||
}
|
||||
}
|
||||
|
||||
file->node = GetNodeFromPath(CleanPath.Get(), FileSystemRoot->Children[0]);
|
||||
if (file->node)
|
||||
{
|
||||
cwk_path_get_basename(GetPathFromNode(file->node).Get(), &basename, nullptr);
|
||||
strcpy(file->Name, basename);
|
||||
return file;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
file->node = GetNodeFromPath(CleanPath.Get(), CurrentParent);
|
||||
cwk_path_get_basename(CleanPath.Get(), &basename, nullptr);
|
||||
strcpy(file->Name, basename);
|
||||
return file;
|
||||
}
|
||||
|
||||
file->Status = FileStatus::NotFound;
|
||||
return file;
|
||||
}
|
||||
|
||||
FileStatus Virtual::Close(shared_ptr<File> File)
|
||||
{
|
||||
SmartLock(VFSLock);
|
||||
if (unlikely(!File.Get()))
|
||||
return FileStatus::InvalidHandle;
|
||||
vfsdbg("Closing %s", File->Name);
|
||||
return FileStatus::OK;
|
||||
}
|
||||
|
||||
Virtual::Virtual()
|
||||
{
|
||||
trace("Initializing virtual file system...");
|
||||
FileSystemRoot = new Node;
|
||||
FileSystemRoot->Flags = NodeFlags::MOUNTPOINT;
|
||||
FileSystemRoot->Operator = nullptr;
|
||||
FileSystemRoot->Parent = nullptr;
|
||||
strncpy(FileSystemRoot->Name, "root", 4);
|
||||
cwk_path_set_style(CWK_STYLE_UNIX);
|
||||
}
|
||||
|
||||
Virtual::~Virtual()
|
||||
{
|
||||
debug("Destructor called");
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user