--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/test-tty.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,468 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "task.h"
+
+#ifdef _WIN32
+# include <io.h>
+# include <windows.h>
+#else /*  Unix */
+# include <fcntl.h>
+# include <unistd.h>
+# if defined(__linux__) && !defined(__ANDROID__)
+#  include <pty.h>
+# elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
+#  include <util.h>
+# elif defined(__FreeBSD__) || defined(__DragonFly__)
+#  include <libutil.h>
+# endif
+#endif
+
+#include <string.h>
+#include <errno.h>
+
+
+TEST_IMPL(tty) {
+  int r, width, height;
+  int ttyin_fd, ttyout_fd;
+  uv_tty_t tty_in, tty_out;
+  uv_loop_t* loop = uv_default_loop();
+
+  /* Make sure we have an FD that refers to a tty */
+#ifdef _WIN32
+  HANDLE handle;
+  handle = CreateFileA("conin$",
+                       GENERIC_READ | GENERIC_WRITE,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_ATTRIBUTE_NORMAL,
+                       NULL);
+  ASSERT_PTR_NE(handle, INVALID_HANDLE_VALUE);
+  ttyin_fd = _open_osfhandle((intptr_t) handle, 0);
+
+  handle = CreateFileA("conout$",
+                       GENERIC_READ | GENERIC_WRITE,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_ATTRIBUTE_NORMAL,
+                       NULL);
+  ASSERT_PTR_NE(handle, INVALID_HANDLE_VALUE);
+  ttyout_fd = _open_osfhandle((intptr_t) handle, 0);
+
+#else /* unix */
+  ttyin_fd = open("/dev/tty", O_RDONLY, 0);
+  if (ttyin_fd < 0) {
+    fprintf(stderr, "Cannot open /dev/tty as read-only: %s\n", strerror(errno));
+    fflush(stderr);
+    return TEST_SKIP;
+  }
+
+  ttyout_fd = open("/dev/tty", O_WRONLY, 0);
+  if (ttyout_fd < 0) {
+    fprintf(stderr, "Cannot open /dev/tty as write-only: %s\n", strerror(errno));
+    fflush(stderr);
+    return TEST_SKIP;
+  }
+#endif
+
+  ASSERT_GE(ttyin_fd, 0);
+  ASSERT_GE(ttyout_fd, 0);
+
+  ASSERT_EQ(UV_UNKNOWN_HANDLE, uv_guess_handle(-1));
+
+  ASSERT_EQ(UV_TTY, uv_guess_handle(ttyin_fd));
+  ASSERT_EQ(UV_TTY, uv_guess_handle(ttyout_fd));
+
+  r = uv_tty_init(loop, &tty_in, ttyin_fd, 1);  /* Readable. */
+  ASSERT_OK(r);
+  ASSERT(uv_is_readable((uv_stream_t*) &tty_in));
+  ASSERT(!uv_is_writable((uv_stream_t*) &tty_in));
+
+  r = uv_tty_init(loop, &tty_out, ttyout_fd, 0);  /* Writable. */
+  ASSERT_OK(r);
+  ASSERT(!uv_is_readable((uv_stream_t*) &tty_out));
+  ASSERT(uv_is_writable((uv_stream_t*) &tty_out));
+
+  r = uv_tty_get_winsize(&tty_out, &width, &height);
+  ASSERT_OK(r);
+
+  printf("width=%d height=%d\n", width, height);
+
+  if (width == 0 && height == 0) {
+   /* Some environments such as containers or Jenkins behave like this
+    * sometimes */
+    MAKE_VALGRIND_HAPPY(loop);
+    return TEST_SKIP;
+  }
+
+  ASSERT_GT(width, 0);
+  ASSERT_GT(height, 0);
+
+  /* Turn on raw mode. */
+  r = uv_tty_set_mode(&tty_in, UV_TTY_MODE_RAW);
+  ASSERT_OK(r);
+
+  /* Turn off raw mode. */
+  r = uv_tty_set_mode(&tty_in, UV_TTY_MODE_NORMAL);
+  ASSERT_OK(r);
+
+  /* Calling uv_tty_reset_mode() repeatedly should not clobber errno. */
+  errno = 0;
+  ASSERT_OK(uv_tty_reset_mode());
+  ASSERT_OK(uv_tty_reset_mode());
+  ASSERT_OK(uv_tty_reset_mode());
+  ASSERT_OK(errno);
+
+  /* TODO check the actual mode! */
+
+  uv_close((uv_handle_t*) &tty_in, NULL);
+  uv_close((uv_handle_t*) &tty_out, NULL);
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+#ifdef _WIN32
+static void tty_raw_alloc(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
+  buf->base = malloc(size);
+  buf->len = size;
+}
+
+static void tty_raw_read(uv_stream_t* tty_in, ssize_t nread, const uv_buf_t* buf) {
+  if (nread > 0) {
+    ASSERT_EQ(1, nread );
+    ASSERT_EQ(buf->base[0], ' ');
+    uv_close((uv_handle_t*) tty_in, NULL);
+  } else {
+    ASSERT_OK(nread);
+  }
+}
+
+TEST_IMPL(tty_raw) {
+  int r;
+  int ttyin_fd;
+  uv_tty_t tty_in;
+  uv_loop_t* loop = uv_default_loop();
+  HANDLE handle;
+  INPUT_RECORD record;
+  DWORD written;
+
+  /* Make sure we have an FD that refers to a tty */
+  handle = CreateFileA("conin$",
+                       GENERIC_READ | GENERIC_WRITE,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_ATTRIBUTE_NORMAL,
+                       NULL);
+  ASSERT_PTR_NE(handle, INVALID_HANDLE_VALUE);
+  ttyin_fd = _open_osfhandle((intptr_t) handle, 0);
+  ASSERT_GE(ttyin_fd, 0);
+  ASSERT_EQ(UV_TTY, uv_guess_handle(ttyin_fd));
+
+  r = uv_tty_init(loop, &tty_in, ttyin_fd, 1);  /* Readable. */
+  ASSERT_OK(r);
+  ASSERT(uv_is_readable((uv_stream_t*) &tty_in));
+  ASSERT(!uv_is_writable((uv_stream_t*) &tty_in));
+
+  r = uv_read_start((uv_stream_t*)&tty_in, tty_raw_alloc, tty_raw_read);
+  ASSERT_OK(r);
+
+  /* Give uv_tty_line_read_thread time to block on ReadConsoleW */
+  Sleep(100);
+
+  /* Turn on raw mode. */
+  r = uv_tty_set_mode(&tty_in, UV_TTY_MODE_RAW);
+  ASSERT_OK(r);
+
+  /* Write ' ' that should be read in raw mode */
+  record.EventType = KEY_EVENT;
+  record.Event.KeyEvent.bKeyDown = TRUE;
+  record.Event.KeyEvent.wRepeatCount = 1;
+  record.Event.KeyEvent.wVirtualKeyCode = VK_SPACE;
+  record.Event.KeyEvent.wVirtualScanCode = MapVirtualKeyW(VK_SPACE, MAPVK_VK_TO_VSC);
+  record.Event.KeyEvent.uChar.UnicodeChar = L' ';
+  record.Event.KeyEvent.dwControlKeyState = 0;
+  WriteConsoleInputW(handle, &record, 1, &written);
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}
+
+TEST_IMPL(tty_empty_write) {
+  int r;
+  int ttyout_fd;
+  uv_tty_t tty_out;
+  char dummy[1];
+  uv_buf_t bufs[1];
+  uv_loop_t* loop;
+
+  /* Make sure we have an FD that refers to a tty */
+  HANDLE handle;
+
+  loop = uv_default_loop();
+
+  handle = CreateFileA("conout$",
+                       GENERIC_READ | GENERIC_WRITE,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_ATTRIBUTE_NORMAL,
+                       NULL);
+  ASSERT_PTR_NE(handle, INVALID_HANDLE_VALUE);
+  ttyout_fd = _open_osfhandle((intptr_t) handle, 0);
+
+  ASSERT_GE(ttyout_fd, 0);
+
+  ASSERT_EQ(UV_TTY, uv_guess_handle(ttyout_fd));
+
+  r = uv_tty_init(loop, &tty_out, ttyout_fd, 0);  /* Writable. */
+  ASSERT_OK(r);
+  ASSERT(!uv_is_readable((uv_stream_t*) &tty_out));
+  ASSERT(uv_is_writable((uv_stream_t*) &tty_out));
+
+  bufs[0].len = 0;
+  bufs[0].base = &dummy[0];
+
+  r = uv_try_write((uv_stream_t*) &tty_out, bufs, 1);
+  ASSERT_OK(r);
+
+  uv_close((uv_handle_t*) &tty_out, NULL);
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}
+
+TEST_IMPL(tty_large_write) {
+  int r;
+  int ttyout_fd;
+  uv_tty_t tty_out;
+  char dummy[10000];
+  uv_buf_t bufs[1];
+  uv_loop_t* loop;
+
+  /* Make sure we have an FD that refers to a tty */
+  HANDLE handle;
+
+  loop = uv_default_loop();
+
+  handle = CreateFileA("conout$",
+                       GENERIC_READ | GENERIC_WRITE,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_ATTRIBUTE_NORMAL,
+                       NULL);
+  ASSERT_PTR_NE(handle, INVALID_HANDLE_VALUE);
+  ttyout_fd = _open_osfhandle((intptr_t) handle, 0);
+
+  ASSERT_GE(ttyout_fd, 0);
+
+  ASSERT_EQ(UV_TTY, uv_guess_handle(ttyout_fd));
+
+  r = uv_tty_init(loop, &tty_out, ttyout_fd, 0);  /* Writable. */
+  ASSERT_OK(r);
+
+  memset(dummy, '.', sizeof(dummy) - 1);
+  dummy[sizeof(dummy) - 1] = '\n';
+
+  bufs[0] = uv_buf_init(dummy, sizeof(dummy));
+
+  r = uv_try_write((uv_stream_t*) &tty_out, bufs, 1);
+  ASSERT_EQ(10000, r);
+
+  uv_close((uv_handle_t*) &tty_out, NULL);
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}
+
+TEST_IMPL(tty_raw_cancel) {
+  int r;
+  int ttyin_fd;
+  uv_tty_t tty_in;
+  HANDLE handle;
+
+  /* Make sure we have an FD that refers to a tty */
+  handle = CreateFileA("conin$",
+                       GENERIC_READ | GENERIC_WRITE,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_ATTRIBUTE_NORMAL,
+                       NULL);
+  ASSERT_PTR_NE(handle, INVALID_HANDLE_VALUE);
+  ttyin_fd = _open_osfhandle((intptr_t) handle, 0);
+  ASSERT_GE(ttyin_fd, 0);
+  ASSERT_EQ(UV_TTY, uv_guess_handle(ttyin_fd));
+
+  r = uv_tty_init(uv_default_loop(), &tty_in, ttyin_fd, 1);  /* Readable. */
+  ASSERT_OK(r);
+  r = uv_tty_set_mode(&tty_in, UV_TTY_MODE_RAW);
+  ASSERT_OK(r);
+  r = uv_read_start((uv_stream_t*)&tty_in, tty_raw_alloc, tty_raw_read);
+  ASSERT_OK(r);
+
+  r = uv_read_stop((uv_stream_t*) &tty_in);
+  ASSERT_OK(r);
+
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+#endif
+
+
+TEST_IMPL(tty_file) {
+#ifndef _WIN32
+  uv_loop_t loop;
+  uv_tty_t tty;
+  uv_tty_t tty_ro;
+  uv_tty_t tty_wo;
+  int fd;
+
+  ASSERT_OK(uv_loop_init(&loop));
+
+  fd = open("test/fixtures/empty_file", O_RDONLY);
+  if (fd != -1) {
+    ASSERT_EQ(UV_EINVAL, uv_tty_init(&loop, &tty, fd, 1));
+    ASSERT_OK(close(fd));
+    /* test EBADF handling */
+    ASSERT_EQ(UV_EINVAL, uv_tty_init(&loop, &tty, fd, 1));
+  }
+
+/* Bug on AIX where '/dev/random' returns 1 from isatty() */
+#ifndef _AIX
+  fd = open("/dev/random", O_RDONLY);
+  if (fd != -1) {
+    ASSERT_EQ(UV_EINVAL, uv_tty_init(&loop, &tty, fd, 1));
+    ASSERT_OK(close(fd));
+  }
+#endif /* _AIX */
+
+  fd = open("/dev/zero", O_RDONLY);
+  if (fd != -1) {
+    ASSERT_EQ(UV_EINVAL, uv_tty_init(&loop, &tty, fd, 1));
+    ASSERT_OK(close(fd));
+  }
+
+  fd = open("/dev/tty", O_RDWR);
+  if (fd != -1) {
+    ASSERT_OK(uv_tty_init(&loop, &tty, fd, 1));
+    ASSERT_OK(close(fd)); /* TODO: it's indeterminate who owns fd now */
+    ASSERT(uv_is_readable((uv_stream_t*) &tty));
+    ASSERT(uv_is_writable((uv_stream_t*) &tty));
+    uv_close((uv_handle_t*) &tty, NULL);
+    ASSERT(!uv_is_readable((uv_stream_t*) &tty));
+    ASSERT(!uv_is_writable((uv_stream_t*) &tty));
+  }
+
+  fd = open("/dev/tty", O_RDONLY);
+  if (fd != -1) {
+    ASSERT_OK(uv_tty_init(&loop, &tty_ro, fd, 1));
+    ASSERT_OK(close(fd)); /* TODO: it's indeterminate who owns fd now */
+    ASSERT(uv_is_readable((uv_stream_t*) &tty_ro));
+    ASSERT(!uv_is_writable((uv_stream_t*) &tty_ro));
+    uv_close((uv_handle_t*) &tty_ro, NULL);
+    ASSERT(!uv_is_readable((uv_stream_t*) &tty_ro));
+    ASSERT(!uv_is_writable((uv_stream_t*) &tty_ro));
+  }
+
+  fd = open("/dev/tty", O_WRONLY);
+  if (fd != -1) {
+    ASSERT_OK(uv_tty_init(&loop, &tty_wo, fd, 0));
+    ASSERT_OK(close(fd)); /* TODO: it's indeterminate who owns fd now */
+    ASSERT(!uv_is_readable((uv_stream_t*) &tty_wo));
+    ASSERT(uv_is_writable((uv_stream_t*) &tty_wo));
+    uv_close((uv_handle_t*) &tty_wo, NULL);
+    ASSERT(!uv_is_readable((uv_stream_t*) &tty_wo));
+    ASSERT(!uv_is_writable((uv_stream_t*) &tty_wo));
+  }
+
+
+  ASSERT_OK(uv_run(&loop, UV_RUN_DEFAULT));
+
+  MAKE_VALGRIND_HAPPY(&loop);
+#endif
+  return 0;
+}
+
+TEST_IMPL(tty_pty) {
+/* TODO(gengjiawen): Fix test on QEMU. */
+#if defined(__QEMU__)
+  RETURN_SKIP("Test does not currently work in QEMU");
+#endif
+#if defined(__ASAN__)
+  RETURN_SKIP("Test does not currently work in ASAN");
+#endif
+
+#if defined(__APPLE__)                            || \
+    defined(__DragonFly__)                        || \
+    defined(__FreeBSD__)                          || \
+    (defined(__linux__) && !defined(__ANDROID__)) || \
+    defined(__NetBSD__)                           || \
+    defined(__OpenBSD__)
+  int master_fd, slave_fd, r;
+  struct winsize w;
+  uv_loop_t loop;
+  uv_tty_t master_tty, slave_tty;
+
+  ASSERT_OK(uv_loop_init(&loop));
+
+  r = openpty(&master_fd, &slave_fd, NULL, NULL, &w);
+  if (r != 0)
+    RETURN_SKIP("No pty available, skipping.");
+
+  ASSERT_OK(uv_tty_init(&loop, &slave_tty, slave_fd, 0));
+  ASSERT_OK(uv_tty_init(&loop, &master_tty, master_fd, 0));
+  ASSERT(uv_is_readable((uv_stream_t*) &slave_tty));
+  ASSERT(uv_is_writable((uv_stream_t*) &slave_tty));
+  ASSERT(uv_is_readable((uv_stream_t*) &master_tty));
+  ASSERT(uv_is_writable((uv_stream_t*) &master_tty));
+  /* Check if the file descriptor was reopened. If it is,
+   * UV_HANDLE_BLOCKING_WRITES (value 0x100000) isn't set on flags.
+   */
+  ASSERT_OK((slave_tty.flags & 0x100000));
+  /* The master_fd of a pty should never be reopened.
+   */
+  ASSERT(master_tty.flags & 0x100000);
+  ASSERT_OK(close(slave_fd));
+  uv_close((uv_handle_t*) &slave_tty, NULL);
+  ASSERT_OK(close(master_fd));
+  uv_close((uv_handle_t*) &master_tty, NULL);
+
+  ASSERT_OK(uv_run(&loop, UV_RUN_DEFAULT));
+
+  MAKE_VALGRIND_HAPPY(&loop);
+#endif
+  return 0;
+}