add ntfs.sys standalone driver target, change default usb vhd layout formatting to ntfs, implement Fat32CreateDir for directory creation support in the fat32 file system driver, add a dedicated HAL serial output endpoint for COM1 writes in hal_serial.c and subscribe serial to HAL text streams, introduce waitable kernel timers with KeTimerCreate, KeTimerSet, and KeTimerCancel alongside spinlock-protected global timer list initialization and scheduler tick tracking, implement SyscallWriteFileAsync system call for asynchronous non-blocking file writes, refactor NetSocketConnect and NetSocketSendTo to use generic SYS_SOCKET_ADDRESS_K structures instead of being hardcoded to IPv4, update gethostbyname and DNS name resolution to support IPv6 parsing via ResolveNameFamily, update tcpserve.exe with -4 and -6 command-line flags to accept and display IPv6 addresses, append size and version headers to all kernel telemetry and statistics structures including SYS_PMM_STATS, SYS_CPU_STATS, and SYS_SCHEDULER_STATS, update winmm timeGetTime to look up high-resolution hardware frequencies via SysGetTickFrequency, integrate 14 native smoke test applications.

code/user/tests/cwd_peb_smoke/cwd_peb_smoke.c

@@ -0,0 +1,108 @@
+// Current-directory PEB cache smoke test.
+// Verifies that SysSetCwd updates the user-visible PEB cache without a getter syscall.
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <ntlite/syscall.h>
+
+// Prints one NUL-terminated string to the kernel console.
+static void print(const char* s) {
+    SYS_WRITE_CONSOLE_REQUEST req = { SysSvFromCstr(s) };
+    SysWriteConsole(&req);
+}
+
+// Prints one unsigned integer to the kernel console.
+static void print_u64(uint64_t v) {
+    char buf[32];
+    int i = 0;
+    if (v == 0) {
+        print("0");
+        return;
+    }
+    while (v && i < (int)sizeof(buf)) {
+        buf[i++] = (char)('0' + (v % 10));
+        v /= 10;
+    }
+    while (i--) {
+        char c = buf[i];
+        SYS_WRITE_CONSOLE_REQUEST req = { SysSvFromParts(&c, 1) };
+        SysWriteConsole(&req);
+    }
+}
+
+// Terminates the current test process.
+static void exit_now(int code) {
+    for (;;) SysExitProcess(code);
+}
+
+// Fails the test with one status value.
+static void fail_status(const char* what, uint32_t status) {
+    print("cwd_peb_smoke: ");
+    print(what);
+    print(" status=");
+    print_u64(status);
+    print("\n");
+    exit_now(1);
+}
+
+// Fails the test with a simple message.
+static void fail(const char* what) {
+    print("cwd_peb_smoke: ");
+    print(what);
+    print("\n");
+    exit_now(1);
+}
+
+// Sets the current directory to one native path.
+static void set_cwd_or_fail(const char* path, const char* what) {
+    SYS_PATH_REQUEST req = { SysSvFromCstr(path) };
+    uint32_t status = SysSetCwd(&req);
+    if (status != STATUS_SUCCESS) fail_status(what, status);
+}
+
+// Verifies the current-directory PEB view against one native path.
+static void expect_cwd(const char* expected) {
+    SYS_STRING_VIEW cwd = SysGetCurrentDirectoryView();
+    size_t expectedLen = strlen(expected);
+    if (cwd.Length != expectedLen) fail("cwd length mismatch");
+    if (cwd.Length && !cwd.Data) fail("cwd data missing");
+    if (cwd.Length && memcmp(cwd.Data, expected, cwd.Length) != 0) fail("cwd value mismatch");
+}
+
+// Program entry point.
+int main(void) {
+    static const char rootPath[] = "0:/";
+    static const char tempDir[] = "0:/cwd_peb_smoke_dir";
+
+    print("cwd_peb_smoke: start\n");
+
+    SYS_PEB* peb = SysGetPeb();
+    if (!peb) fail("peb missing");
+    if (peb->Magic != SYS_PEB_MAGIC) fail("peb magic mismatch");
+    if (peb->Version != SYS_ENV_VERSION) fail("peb version mismatch");
+
+    set_cwd_or_fail(rootPath, "set root cwd");
+    expect_cwd(rootPath);
+
+    SYS_PATH_REQUEST dirReq = { SysSvFromCstr(tempDir) };
+    uint32_t status = SysRemoveDir(&dirReq);
+    if (status != STATUS_SUCCESS && status != STATUS_NOT_FOUND)
+        fail_status("remove stale temp dir", status);
+
+    status = SysCreateDir(&dirReq);
+    if (status != STATUS_SUCCESS) fail_status("create temp dir", status);
+
+    set_cwd_or_fail(tempDir, "set temp cwd");
+    expect_cwd(tempDir);
+
+    set_cwd_or_fail(rootPath, "restore root cwd");
+    expect_cwd(rootPath);
+
+    status = SysRemoveDir(&dirReq);
+    if (status != STATUS_SUCCESS) fail_status("remove temp dir", status);
+
+    print("cwd_peb_smoke: PASS\n");
+    exit_now(0);
+    return 0;
+}