--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/src/unix/aix-common.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,89 @@
+/* Copyright libuv project 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 <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/types.h>
+
+#include <sys/time.h>
+#include <unistd.h>
+
+#include <procinfo.h>
+
+#include <ctype.h>
+
+extern char* original_exepath;
+extern uv_mutex_t process_title_mutex;
+extern uv_once_t process_title_mutex_once;
+extern void init_process_title_mutex_once(void);
+
+uint64_t uv__hrtime(uv_clocktype_t type) {
+  uint64_t G = 1000000000;
+  timebasestruct_t t;
+  read_wall_time(&t, TIMEBASE_SZ);
+  time_base_to_time(&t, TIMEBASE_SZ);
+  return (uint64_t) t.tb_high * G + t.tb_low;
+}
+
+
+/*
+ * We could use a static buffer for the path manipulations that we need outside
+ * of the function, but this function could be called by multiple consumers and
+ * we don't want to potentially create a race condition in the use of snprintf.
+ * There is no direct way of getting the exe path in AIX - either through /procfs
+ * or through some libc APIs. The below approach is to parse the argv[0]'s pattern
+ * and use it in conjunction with PATH environment variable to craft one.
+ */
+int uv_exepath(char* buffer, size_t* size) {
+  int res;
+  char args[UV__PATH_MAX];
+  size_t cached_len;
+  struct procsinfo pi;
+
+  if (buffer == NULL || size == NULL || *size == 0)
+    return UV_EINVAL;
+
+  uv_once(&process_title_mutex_once, init_process_title_mutex_once);
+  uv_mutex_lock(&process_title_mutex);
+  if (original_exepath != NULL) {
+    cached_len = strlen(original_exepath);
+    *size -= 1;
+    if (*size > cached_len)
+      *size = cached_len;
+    memcpy(buffer, original_exepath, *size);
+    buffer[*size] = '\0';
+    uv_mutex_unlock(&process_title_mutex);
+    return 0;
+  }
+  uv_mutex_unlock(&process_title_mutex);
+  pi.pi_pid = getpid();
+  res = getargs(&pi, sizeof(pi), args, sizeof(args));
+
+  if (res < 0)
+    return UV_EINVAL;
+
+  return uv__search_path(args, buffer, size);
+}