rewrite init to restart failed processes, add file renaming, directory creation, directory renaming, directory removal, add process killing, unify shells, readme changes.

code/kernel/io_file.h

@@ -45,6 +45,14 @@ typedef struct IO_FILESYSTEM {
     // Delete the file at 'path'.
     KSTATUS (*Delete)(struct IO_FILESYSTEM* fs, const char* path);
 
+    // Rename or move a file/directory within the same filesystem.
+    KSTATUS (*Rename)(struct IO_FILESYSTEM* fs,
+                      const char* oldPath, const char* newPath);
+
+    // Create or remove directories.
+    KSTATUS (*CreateDir)(struct IO_FILESYSTEM* fs, const char* path);
+    KSTATUS (*RemoveDir)(struct IO_FILESYSTEM* fs, const char* path);
+
     // Truncate or extend the file to exactly 'newSize' bytes.
     KSTATUS (*Truncate)(struct IO_FILESYSTEM* fs, void* fileCtx,
                         uint64_t newSize);
@@ -119,6 +127,9 @@ __declspec(dllexport) KSTATUS  IoWriteFile  (FILE_OBJECT* file, const void* buf,
                                              size_t size, size_t* bytesWritten);
 __declspec(dllexport) KSTATUS  IoCreateFile (const char* path, FILE_OBJECT** out);
 __declspec(dllexport) KSTATUS  IoDeleteFile (const char* path);
+__declspec(dllexport) KSTATUS  IoRenameFile (const char* oldPath, const char* newPath);
+__declspec(dllexport) KSTATUS  IoCreateDir  (const char* path);
+__declspec(dllexport) KSTATUS  IoRemoveDir  (const char* path);
 __declspec(dllexport) KSTATUS  IoTruncateFile(FILE_OBJECT* file, uint64_t newSize);
 __declspec(dllexport) KSTATUS  IoSeekFile(FILE_OBJECT* file, uint64_t offset);
 __declspec(dllexport) uint64_t IoGetFileSize(FILE_OBJECT* file);