fix ps/2 mouse init, make Stall more precise, rename CurrentProcess to KeGetCurrentProcess, correct type about maneuvers, add file writing to win32

code/shell/shell.c

@@ -21,7 +21,9 @@ typedef int            BOOL;
 
 // File I/O constants
 #define GENERIC_READ             0x80000000L
+#define GENERIC_WRITE            0x40000000L
 #define OPEN_EXISTING            3
+#define CREATE_ALWAYS            2
 #define FILE_SHARE_READ          0x00000001
 #define FILE_ATTRIBUTE_DIRECTORY 0x00000010
 
@@ -75,9 +77,9 @@ typedef struct _WIN32_FIND_DATAA {
 } WIN32_FIND_DATAA;
 
 BOOL   CreateProcessA(const char* lpApp, char* lpCmdLine,
-                      void* lpPA, void* lpTA, BOOL bInherit,
-                      DWORD dwFlags, void* lpEnv, const char* lpDir,
-                      STARTUPINFOA* lpSI, PROCESS_INFORMATION* lpPI);
+                void* lpPA, void* lpTA, BOOL bInherit,
+                DWORD dwFlags, void* lpEnv, const char* lpDir,
+                STARTUPINFOA* lpSI, PROCESS_INFORMATION* lpPI);
 DWORD  WaitForSingleObject(HANDLE hHandle, DWORD dwMs);
 BOOL   GetExitCodeProcess(HANDLE hProcess, DWORD* lpExitCode);
 BOOL   CloseHandle(HANDLE hObject);
@@ -89,10 +91,12 @@ BOOL   FindClose(HANDLE hFindFile);
 BOOL   SetCurrentDirectoryA(const char* lpPathName);
 BOOL   DeleteFileA(const char* lpFileName);
 HANDLE CreateFileA(const char* lpFileName, DWORD dwDesiredAccess, DWORD dwShareMode, 
-                   void* lpSecurityAttributes, DWORD dwCreationDisposition, 
-                   DWORD dwFlagsAndAttributes, HANDLE hTemplateFile);
+                void* lpSecurityAttributes, DWORD dwCreationDisposition, 
+                DWORD dwFlagsAndAttributes, HANDLE hTemplateFile);
 BOOL   ReadFile(HANDLE hFile, void* lpBuffer, DWORD nNumberOfBytesToRead, 
                 DWORD* lpNumberOfBytesRead, void* lpOverlapped);
+BOOL   WriteFile(HANDLE hFile, const void* lpBuffer, DWORD nNumberOfBytesToWrite, 
+                DWORD* lpNumberOfBytesWritten, void* lpOverlapped);
 
 // ---------------------------------------------------------------------------
 // Global handles
@@ -172,6 +176,51 @@ static char* trim(char* s) {
 // ---------------------------------------------------------------------------
 // Built-in commands
 // ---------------------------------------------------------------------------
+static void cmd_help() {
+    print("Available commands:\n"
+    "  help              - Show this list\n"
+    "  dir               - List files in current directory\n"
+    "  cd <path>         - Change directory\n"
+    "  type <file>       - Display file contents\n"
+    "  del <file>        - Delete a file\n"
+    "  write <file> <tx> - Create a file with text\n"
+    "  exit              - Close the shell\n");
+}
+
+static void cmd_write(const char* args) {
+    char filename[MAX_PATH];
+    int i = 0;
+
+    // Parse filename (up to first space)
+    while (args[i] != ' ' && args[i] != '\0' && i < MAX_PATH - 1) {
+        filename[i] = args[i];
+        i++;
+    }
+    filename[i] = '\0';
+
+    if (args[i] == '\0' || args[i+1] == '\0') {
+        print("write: usage: write <filename> <text>\n");
+        return;
+    }
+
+    const char* text = args + i + 1; // Content starts after the space
+
+    HANDLE hFile = CreateFileA(filename, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, 0, 0);
+    if (hFile == INVALID_HANDLE_VALUE) {
+        print("write: could not create file\n");
+        return;
+    }
+
+    DWORD written;
+    if (!WriteFile(hFile, text, (DWORD)strlen(text), &written, 0)) {
+        print("write: error writing to file\n");
+    } else {
+        print("File written successfully.\n");
+    }
+
+    CloseHandle(hFile);
+}
+
 static void cmd_dir() {
     WIN32_FIND_DATAA fd;
     HANDLE hFind = FindFirstFileA("*", &fd);
@@ -226,6 +275,11 @@ static int runCommand(const char* cmd) {
         return 1;
     }
 
+    if (strcmp(cmd, "help") == 0) {
+        cmd_help();
+        return 0;
+    }
+
     if (strcmp(cmd, "dir") == 0) {
         cmd_dir();
         return 0;
@@ -256,6 +310,11 @@ static int runCommand(const char* cmd) {
         return 0;
     }
 
+    if (strncmp(cmd, "write ", 6) == 0) {
+        cmd_write(cmd + 6);
+        return 0;
+    }
+
     // --- External Process Execution ---
     STARTUPINFOA si;
     PROCESS_INFORMATION pi;