--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/src/unix/proctitle.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,157 @@
+/* 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 "internal.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+struct uv__process_title {
+  char* str;
+  size_t len;  /* Length of the current process title. */
+  size_t cap;  /* Maximum capacity. Computed once in uv_setup_args(). */
+};
+
+extern void uv__set_process_title(const char* title);
+
+static uv_mutex_t process_title_mutex;
+static uv_once_t process_title_mutex_once = UV_ONCE_INIT;
+static struct uv__process_title process_title;
+static void* args_mem;
+
+
+static void init_process_title_mutex_once(void) {
+  uv_mutex_init(&process_title_mutex);
+}
+
+
+char** uv_setup_args(int argc, char** argv) {
+  struct uv__process_title pt;
+  char** new_argv;
+  size_t size;
+  char* s;
+  int i;
+
+  if (argc <= 0)
+    return argv;
+
+  pt.str = argv[0];
+  pt.len = strlen(argv[0]);
+  pt.cap = pt.len + 1;
+
+  /* Calculate how much memory we need for the argv strings. */
+  size = pt.cap;
+  for (i = 1; i < argc; i++)
+    size += strlen(argv[i]) + 1;
+
+  /* Add space for the argv pointers. */
+  size += (argc + 1) * sizeof(char*);
+
+  new_argv = uv__malloc(size);
+  if (new_argv == NULL)
+    return argv;
+
+  /* Copy over the strings and set up the pointer table. */
+  i = 0;
+  s = (char*) &new_argv[argc + 1];
+  size = pt.cap;
+  goto loop;
+
+  for (/* empty */; i < argc; i++) {
+    size = strlen(argv[i]) + 1;
+  loop:
+    memcpy(s, argv[i], size);
+    new_argv[i] = s;
+    s += size;
+  }
+  new_argv[i] = NULL;
+
+  pt.cap = argv[i - 1] + size - argv[0];
+
+  args_mem = new_argv;
+  process_title = pt;
+
+  return new_argv;
+}
+
+
+int uv_set_process_title(const char* title) {
+  struct uv__process_title* pt;
+  size_t len;
+
+  /* If uv_setup_args wasn't called or failed, we can't continue. */
+  if (args_mem == NULL)
+    return UV_ENOBUFS;
+
+  pt = &process_title;
+  len = strlen(title);
+
+  uv_once(&process_title_mutex_once, init_process_title_mutex_once);
+  uv_mutex_lock(&process_title_mutex);
+
+  if (len >= pt->cap) {
+    len = 0;
+    if (pt->cap > 0)
+      len = pt->cap - 1;
+  }
+
+  memcpy(pt->str, title, len);
+  memset(pt->str + len, '\0', pt->cap - len);
+  pt->len = len;
+  uv__set_process_title(pt->str);
+
+  uv_mutex_unlock(&process_title_mutex);
+
+  return 0;
+}
+
+
+int uv_get_process_title(char* buffer, size_t size) {
+  if (buffer == NULL || size == 0)
+    return UV_EINVAL;
+
+  /* If uv_setup_args wasn't called or failed, we can't continue. */
+  if (args_mem == NULL)
+    return UV_ENOBUFS;
+
+  uv_once(&process_title_mutex_once, init_process_title_mutex_once);
+  uv_mutex_lock(&process_title_mutex);
+
+  if (size <= process_title.len) {
+    uv_mutex_unlock(&process_title_mutex);
+    return UV_ENOBUFS;
+  }
+
+  if (process_title.len != 0)
+    memcpy(buffer, process_title.str, process_title.len + 1);
+
+  buffer[process_title.len] = '\0';
+
+  uv_mutex_unlock(&process_title_mutex);
+
+  return 0;
+}
+
+
+void uv__process_title_cleanup(void) {
+  uv__free(args_mem);  /* Keep valgrind happy. */
+  args_mem = NULL;
+}