--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/src/unix/sunos.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,915 @@
+/* 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 <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+
+#ifndef SUNOS_NO_IFADDRS
+# include <ifaddrs.h>
+#endif
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_arp.h>
+#include <sys/sockio.h>
+
+#include <sys/loadavg.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <kstat.h>
+#include <fcntl.h>
+
+#include <sys/port.h>
+#include <port.h>
+
+#define PORT_FIRED 0x69
+#define PORT_UNUSED 0x0
+#define PORT_LOADED 0x99
+#define PORT_DELETED -1
+
+#if (!defined(_LP64)) && (_FILE_OFFSET_BITS - 0 == 64)
+#define PROCFS_FILE_OFFSET_BITS_HACK 1
+#undef _FILE_OFFSET_BITS
+#else
+#define PROCFS_FILE_OFFSET_BITS_HACK 0
+#endif
+
+#include <procfs.h>
+
+#if (PROCFS_FILE_OFFSET_BITS_HACK - 0 == 1)
+#define _FILE_OFFSET_BITS 64
+#endif
+
+
+int uv__platform_loop_init(uv_loop_t* loop) {
+  int err;
+  int fd;
+
+  loop->fs_fd = -1;
+  loop->backend_fd = -1;
+
+  fd = port_create();
+  if (fd == -1)
+    return UV__ERR(errno);
+
+  err = uv__cloexec(fd, 1);
+  if (err) {
+    uv__close(fd);
+    return err;
+  }
+  loop->backend_fd = fd;
+
+  return 0;
+}
+
+
+void uv__platform_loop_delete(uv_loop_t* loop) {
+  if (loop->fs_fd != -1) {
+    uv__close(loop->fs_fd);
+    loop->fs_fd = -1;
+  }
+
+  if (loop->backend_fd != -1) {
+    uv__close(loop->backend_fd);
+    loop->backend_fd = -1;
+  }
+}
+
+
+int uv__io_fork(uv_loop_t* loop) {
+#if defined(PORT_SOURCE_FILE)
+  if (loop->fs_fd != -1) {
+    /* stop the watcher before we blow away its fileno */
+    uv__io_stop(loop, &loop->fs_event_watcher, POLLIN);
+  }
+#endif
+  uv__platform_loop_delete(loop);
+  return uv__platform_loop_init(loop);
+}
+
+
+void uv__platform_invalidate_fd(uv_loop_t* loop, int fd) {
+  struct port_event* events;
+  uintptr_t i;
+  uintptr_t nfds;
+
+  assert(loop->watchers != NULL);
+  assert(fd >= 0);
+
+  events = (struct port_event*) loop->watchers[loop->nwatchers];
+  nfds = (uintptr_t) loop->watchers[loop->nwatchers + 1];
+  if (events == NULL)
+    return;
+
+  /* Invalidate events with same file descriptor */
+  for (i = 0; i < nfds; i++)
+    if ((int) events[i].portev_object == fd)
+      events[i].portev_object = -1;
+}
+
+
+int uv__io_check_fd(uv_loop_t* loop, int fd) {
+  if (port_associate(loop->backend_fd, PORT_SOURCE_FD, fd, POLLIN, 0))
+    return UV__ERR(errno);
+
+  if (port_dissociate(loop->backend_fd, PORT_SOURCE_FD, fd)) {
+    perror("(libuv) port_dissociate()");
+    abort();
+  }
+
+  return 0;
+}
+
+
+void uv__io_poll(uv_loop_t* loop, int timeout) {
+  struct port_event events[1024];
+  struct port_event* pe;
+  struct timespec spec;
+  struct uv__queue* q;
+  uv__io_t* w;
+  sigset_t* pset;
+  sigset_t set;
+  uint64_t base;
+  uint64_t diff;
+  unsigned int nfds;
+  unsigned int i;
+  int saved_errno;
+  int have_signals;
+  int nevents;
+  int count;
+  int err;
+  int fd;
+  int user_timeout;
+  int reset_timeout;
+
+  if (loop->nfds == 0) {
+    assert(uv__queue_empty(&loop->watcher_queue));
+    return;
+  }
+
+  while (!uv__queue_empty(&loop->watcher_queue)) {
+    q = uv__queue_head(&loop->watcher_queue);
+    uv__queue_remove(q);
+    uv__queue_init(q);
+
+    w = uv__queue_data(q, uv__io_t, watcher_queue);
+    assert(w->pevents != 0);
+
+    if (port_associate(loop->backend_fd,
+                       PORT_SOURCE_FD,
+                       w->fd,
+                       w->pevents,
+                       0)) {
+      perror("(libuv) port_associate()");
+      abort();
+    }
+
+    w->events = w->pevents;
+  }
+
+  pset = NULL;
+  if (loop->flags & UV_LOOP_BLOCK_SIGPROF) {
+    pset = &set;
+    sigemptyset(pset);
+    sigaddset(pset, SIGPROF);
+  }
+
+  assert(timeout >= -1);
+  base = loop->time;
+  count = 48; /* Benchmarks suggest this gives the best throughput. */
+
+  if (uv__get_internal_fields(loop)->flags & UV_METRICS_IDLE_TIME) {
+    reset_timeout = 1;
+    user_timeout = timeout;
+    timeout = 0;
+  } else {
+    reset_timeout = 0;
+  }
+
+  for (;;) {
+    /* Only need to set the provider_entry_time if timeout != 0. The function
+     * will return early if the loop isn't configured with UV_METRICS_IDLE_TIME.
+     */
+    if (timeout != 0)
+      uv__metrics_set_provider_entry_time(loop);
+
+    if (timeout != -1) {
+      spec.tv_sec = timeout / 1000;
+      spec.tv_nsec = (timeout % 1000) * 1000000;
+    }
+
+    /* Work around a kernel bug where nfds is not updated. */
+    events[0].portev_source = 0;
+
+    nfds = 1;
+    saved_errno = 0;
+
+    if (pset != NULL)
+      pthread_sigmask(SIG_BLOCK, pset, NULL);
+
+    err = port_getn(loop->backend_fd,
+                    events,
+                    ARRAY_SIZE(events),
+                    &nfds,
+                    timeout == -1 ? NULL : &spec);
+
+    if (pset != NULL)
+      pthread_sigmask(SIG_UNBLOCK, pset, NULL);
+
+    if (err) {
+      /* Work around another kernel bug: port_getn() may return events even
+       * on error.
+       */
+      if (errno == EINTR || errno == ETIME) {
+        saved_errno = errno;
+      } else {
+        perror("(libuv) port_getn()");
+        abort();
+      }
+    }
+
+    /* Update loop->time unconditionally. It's tempting to skip the update when
+     * timeout == 0 (i.e. non-blocking poll) but there is no guarantee that the
+     * operating system didn't reschedule our process while in the syscall.
+     */
+    SAVE_ERRNO(uv__update_time(loop));
+
+    if (events[0].portev_source == 0) {
+      if (reset_timeout != 0) {
+        timeout = user_timeout;
+        reset_timeout = 0;
+      }
+
+      if (timeout == 0)
+        return;
+
+      if (timeout == -1)
+        continue;
+
+      goto update_timeout;
+    }
+
+    if (nfds == 0) {
+      assert(timeout != -1);
+      return;
+    }
+
+    have_signals = 0;
+    nevents = 0;
+
+    assert(loop->watchers != NULL);
+    loop->watchers[loop->nwatchers] = (void*) events;
+    loop->watchers[loop->nwatchers + 1] = (void*) (uintptr_t) nfds;
+    for (i = 0; i < nfds; i++) {
+      pe = events + i;
+      fd = pe->portev_object;
+
+      /* Skip invalidated events, see uv__platform_invalidate_fd */
+      if (fd == -1)
+        continue;
+
+      assert(fd >= 0);
+      assert((unsigned) fd < loop->nwatchers);
+
+      w = loop->watchers[fd];
+
+      /* File descriptor that we've stopped watching, ignore. */
+      if (w == NULL)
+        continue;
+
+      /* Run signal watchers last.  This also affects child process watchers
+       * because those are implemented in terms of signal watchers.
+       */
+      if (w == &loop->signal_io_watcher) {
+        have_signals = 1;
+      } else {
+        uv__metrics_update_idle_time(loop);
+        w->cb(loop, w, pe->portev_events);
+      }
+
+      nevents++;
+
+      if (w != loop->watchers[fd])
+        continue;  /* Disabled by callback. */
+
+      /* Events Ports operates in oneshot mode, rearm timer on next run. */
+      if (w->pevents != 0 && uv__queue_empty(&w->watcher_queue))
+        uv__queue_insert_tail(&loop->watcher_queue, &w->watcher_queue);
+    }
+
+    uv__metrics_inc_events(loop, nevents);
+    if (reset_timeout != 0) {
+      timeout = user_timeout;
+      reset_timeout = 0;
+      uv__metrics_inc_events_waiting(loop, nevents);
+    }
+
+    if (have_signals != 0) {
+      uv__metrics_update_idle_time(loop);
+      loop->signal_io_watcher.cb(loop, &loop->signal_io_watcher, POLLIN);
+    }
+
+    loop->watchers[loop->nwatchers] = NULL;
+    loop->watchers[loop->nwatchers + 1] = NULL;
+
+    if (have_signals != 0)
+      return;  /* Event loop should cycle now so don't poll again. */
+
+    if (nevents != 0) {
+      if (nfds == ARRAY_SIZE(events) && --count != 0) {
+        /* Poll for more events but don't block this time. */
+        timeout = 0;
+        continue;
+      }
+      return;
+    }
+
+    if (saved_errno == ETIME) {
+      assert(timeout != -1);
+      return;
+    }
+
+    if (timeout == 0)
+      return;
+
+    if (timeout == -1)
+      continue;
+
+update_timeout:
+    assert(timeout > 0);
+
+    diff = loop->time - base;
+    if (diff >= (uint64_t) timeout)
+      return;
+
+    timeout -= diff;
+  }
+}
+
+
+uint64_t uv__hrtime(uv_clocktype_t type) {
+  return gethrtime();
+}
+
+
+/*
+ * 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.
+ */
+int uv_exepath(char* buffer, size_t* size) {
+  ssize_t res;
+  char buf[128];
+
+  if (buffer == NULL || size == NULL || *size == 0)
+    return UV_EINVAL;
+
+  snprintf(buf, sizeof(buf), "/proc/%lu/path/a.out", (unsigned long) getpid());
+
+  res = *size - 1;
+  if (res > 0)
+    res = readlink(buf, buffer, res);
+
+  if (res == -1)
+    return UV__ERR(errno);
+
+  buffer[res] = '\0';
+  *size = res;
+  return 0;
+}
+
+
+uint64_t uv_get_free_memory(void) {
+  return (uint64_t) sysconf(_SC_PAGESIZE) * sysconf(_SC_AVPHYS_PAGES);
+}
+
+
+uint64_t uv_get_total_memory(void) {
+  return (uint64_t) sysconf(_SC_PAGESIZE) * sysconf(_SC_PHYS_PAGES);
+}
+
+
+uint64_t uv_get_constrained_memory(void) {
+  return 0;  /* Memory constraints are unknown. */
+}
+
+
+uint64_t uv_get_available_memory(void) {
+  return uv_get_free_memory();
+}
+
+
+void uv_loadavg(double avg[3]) {
+  (void) getloadavg(avg, 3);
+}
+
+
+#if defined(PORT_SOURCE_FILE)
+
+static int uv__fs_event_rearm(uv_fs_event_t *handle) {
+  if (handle->fd == PORT_DELETED)
+    return UV_EBADF;
+
+  if (port_associate(handle->loop->fs_fd,
+                     PORT_SOURCE_FILE,
+                     (uintptr_t) &handle->fo,
+                     FILE_ATTRIB | FILE_MODIFIED,
+                     handle) == -1) {
+    return UV__ERR(errno);
+  }
+  handle->fd = PORT_LOADED;
+
+  return 0;
+}
+
+
+static void uv__fs_event_read(uv_loop_t* loop,
+                              uv__io_t* w,
+                              unsigned int revents) {
+  uv_fs_event_t *handle = NULL;
+  timespec_t timeout;
+  port_event_t pe;
+  int events;
+  int r;
+
+  (void) w;
+  (void) revents;
+
+  do {
+    uint_t n = 1;
+
+    /*
+     * Note that our use of port_getn() here (and not port_get()) is deliberate:
+     * there is a bug in event ports (Sun bug 6456558) whereby a zeroed timeout
+     * causes port_get() to return success instead of ETIME when there aren't
+     * actually any events (!); by using port_getn() in lieu of port_get(),
+     * we can at least workaround the bug by checking for zero returned events
+     * and treating it as we would ETIME.
+     */
+    do {
+      memset(&timeout, 0, sizeof timeout);
+      r = port_getn(loop->fs_fd, &pe, 1, &n, &timeout);
+    }
+    while (r == -1 && errno == EINTR);
+
+    if ((r == -1 && errno == ETIME) || n == 0)
+      break;
+
+    handle = (uv_fs_event_t*) pe.portev_user;
+    assert((r == 0) && "unexpected port_get() error");
+
+    if (uv__is_closing(handle)) {
+      uv__handle_stop(handle);
+      uv__make_close_pending((uv_handle_t*) handle);
+      break;
+    }
+
+    events = 0;
+    if (pe.portev_events & (FILE_ATTRIB | FILE_MODIFIED))
+      events |= UV_CHANGE;
+    if (pe.portev_events & ~(FILE_ATTRIB | FILE_MODIFIED))
+      events |= UV_RENAME;
+    assert(events != 0);
+    handle->fd = PORT_FIRED;
+    handle->cb(handle, NULL, events, 0);
+
+    if (handle->fd != PORT_DELETED) {
+      r = uv__fs_event_rearm(handle);
+      if (r != 0)
+        handle->cb(handle, NULL, 0, r);
+    }
+  }
+  while (handle->fd != PORT_DELETED);
+}
+
+
+int uv_fs_event_init(uv_loop_t* loop, uv_fs_event_t* handle) {
+  uv__handle_init(loop, (uv_handle_t*)handle, UV_FS_EVENT);
+  return 0;
+}
+
+
+int uv_fs_event_start(uv_fs_event_t* handle,
+                      uv_fs_event_cb cb,
+                      const char* path,
+                      unsigned int flags) {
+  int portfd;
+  int first_run;
+  int err;
+
+  if (uv__is_active(handle))
+    return UV_EINVAL;
+
+  first_run = 0;
+  if (handle->loop->fs_fd == -1) {
+    portfd = port_create();
+    if (portfd == -1)
+      return UV__ERR(errno);
+    handle->loop->fs_fd = portfd;
+    first_run = 1;
+  }
+
+  uv__handle_start(handle);
+  handle->path = uv__strdup(path);
+  handle->fd = PORT_UNUSED;
+  handle->cb = cb;
+
+  memset(&handle->fo, 0, sizeof handle->fo);
+  handle->fo.fo_name = handle->path;
+  err = uv__fs_event_rearm(handle);
+  if (err != 0) {
+    uv_fs_event_stop(handle);
+    return err;
+  }
+
+  if (first_run) {
+    err = uv__io_init_start(handle->loop,
+                             &handle->loop->fs_event_watcher,
+                             uv__fs_event_read,
+                             portfd,
+                             POLLIN);
+    if (err)
+      uv__handle_stop(handle);
+
+    return err;
+  }
+
+  return 0;
+}
+
+
+static int uv__fs_event_stop(uv_fs_event_t* handle) {
+  int ret = 0;
+
+  if (!uv__is_active(handle))
+    return 0;
+
+  if (handle->fd == PORT_LOADED) {
+    ret = port_dissociate(handle->loop->fs_fd,
+                    PORT_SOURCE_FILE,
+                    (uintptr_t) &handle->fo);
+  }
+
+  handle->fd = PORT_DELETED;
+  uv__free(handle->path);
+  handle->path = NULL;
+  handle->fo.fo_name = NULL;
+  if (ret == 0)
+    uv__handle_stop(handle);
+
+  return ret;
+}
+
+int uv_fs_event_stop(uv_fs_event_t* handle) {
+  (void) uv__fs_event_stop(handle);
+  return 0;
+}
+
+void uv__fs_event_close(uv_fs_event_t* handle) {
+  /*
+   * If we were unable to dissociate the port here, then it is most likely
+   * that there is a pending queued event. When this happens, we don't want
+   * to complete the close as it will free the underlying memory for the
+   * handle, causing a use-after-free problem when the event is processed.
+   * We defer the final cleanup until after the event is consumed in
+   * uv__fs_event_read().
+   */
+  if (uv__fs_event_stop(handle) == 0)
+    uv__make_close_pending((uv_handle_t*) handle);
+}
+
+#else /* !defined(PORT_SOURCE_FILE) */
+
+int uv_fs_event_init(uv_loop_t* loop, uv_fs_event_t* handle) {
+  return UV_ENOSYS;
+}
+
+
+int uv_fs_event_start(uv_fs_event_t* handle,
+                      uv_fs_event_cb cb,
+                      const char* filename,
+                      unsigned int flags) {
+  return UV_ENOSYS;
+}
+
+
+int uv_fs_event_stop(uv_fs_event_t* handle) {
+  return UV_ENOSYS;
+}
+
+
+void uv__fs_event_close(uv_fs_event_t* handle) {
+  UNREACHABLE();
+}
+
+#endif /* defined(PORT_SOURCE_FILE) */
+
+
+int uv_resident_set_memory(size_t* rss) {
+  psinfo_t psinfo;
+  int err;
+  int fd;
+
+  fd = open("/proc/self/psinfo", O_RDONLY);
+  if (fd == -1)
+    return UV__ERR(errno);
+
+  /* FIXME(bnoordhuis) Handle EINTR. */
+  err = UV_EINVAL;
+  if (read(fd, &psinfo, sizeof(psinfo)) == sizeof(psinfo)) {
+    *rss = (size_t)psinfo.pr_rssize * 1024;
+    err = 0;
+  }
+  uv__close(fd);
+
+  return err;
+}
+
+
+int uv_uptime(double* uptime) {
+  kstat_ctl_t   *kc;
+  kstat_t       *ksp;
+  kstat_named_t *knp;
+
+  long hz = sysconf(_SC_CLK_TCK);
+
+  kc = kstat_open();
+  if (kc == NULL)
+    return UV_EPERM;
+
+  ksp = kstat_lookup(kc, (char*) "unix", 0, (char*) "system_misc");
+  if (kstat_read(kc, ksp, NULL) == -1) {
+    *uptime = -1;
+  } else {
+    knp = (kstat_named_t*)  kstat_data_lookup(ksp, (char*) "clk_intr");
+    *uptime = knp->value.ul / hz;
+  }
+  kstat_close(kc);
+
+  return 0;
+}
+
+
+int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
+  int           lookup_instance;
+  kstat_ctl_t   *kc;
+  kstat_t       *ksp;
+  kstat_named_t *knp;
+  uv_cpu_info_t* cpu_info;
+
+  kc = kstat_open();
+  if (kc == NULL)
+    return UV_EPERM;
+
+  /* Get count of cpus */
+  lookup_instance = 0;
+  while ((ksp = kstat_lookup(kc, (char*) "cpu_info", lookup_instance, NULL))) {
+    lookup_instance++;
+  }
+
+  *cpu_infos = uv__malloc(lookup_instance * sizeof(**cpu_infos));
+  if (!(*cpu_infos)) {
+    kstat_close(kc);
+    return UV_ENOMEM;
+  }
+
+  *count = lookup_instance;
+
+  cpu_info = *cpu_infos;
+  lookup_instance = 0;
+  while ((ksp = kstat_lookup(kc, (char*) "cpu_info", lookup_instance, NULL))) {
+    if (kstat_read(kc, ksp, NULL) == -1) {
+      cpu_info->speed = 0;
+      cpu_info->model = NULL;
+    } else {
+      knp = kstat_data_lookup(ksp, (char*) "clock_MHz");
+      assert(knp->data_type == KSTAT_DATA_INT32 ||
+             knp->data_type == KSTAT_DATA_INT64);
+      cpu_info->speed = (knp->data_type == KSTAT_DATA_INT32) ? knp->value.i32
+                                                             : knp->value.i64;
+
+      knp = kstat_data_lookup(ksp, (char*) "brand");
+      assert(knp->data_type == KSTAT_DATA_STRING);
+      cpu_info->model = uv__strdup(KSTAT_NAMED_STR_PTR(knp));
+    }
+
+    lookup_instance++;
+    cpu_info++;
+  }
+
+  cpu_info = *cpu_infos;
+  lookup_instance = 0;
+  for (;;) {
+    ksp = kstat_lookup(kc, (char*) "cpu", lookup_instance, (char*) "sys");
+
+    if (ksp == NULL)
+      break;
+
+    if (kstat_read(kc, ksp, NULL) == -1) {
+      cpu_info->cpu_times.user = 0;
+      cpu_info->cpu_times.nice = 0;
+      cpu_info->cpu_times.sys = 0;
+      cpu_info->cpu_times.idle = 0;
+      cpu_info->cpu_times.irq = 0;
+    } else {
+      knp = kstat_data_lookup(ksp, (char*) "cpu_ticks_user");
+      assert(knp->data_type == KSTAT_DATA_UINT64);
+      cpu_info->cpu_times.user = knp->value.ui64;
+
+      knp = kstat_data_lookup(ksp, (char*) "cpu_ticks_kernel");
+      assert(knp->data_type == KSTAT_DATA_UINT64);
+      cpu_info->cpu_times.sys = knp->value.ui64;
+
+      knp = kstat_data_lookup(ksp, (char*) "cpu_ticks_idle");
+      assert(knp->data_type == KSTAT_DATA_UINT64);
+      cpu_info->cpu_times.idle = knp->value.ui64;
+
+      knp = kstat_data_lookup(ksp, (char*) "intr");
+      assert(knp->data_type == KSTAT_DATA_UINT64);
+      cpu_info->cpu_times.irq = knp->value.ui64;
+      cpu_info->cpu_times.nice = 0;
+    }
+
+    lookup_instance++;
+    cpu_info++;
+  }
+
+  kstat_close(kc);
+
+  return 0;
+}
+
+
+#ifdef SUNOS_NO_IFADDRS
+int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
+  *count = 0;
+  *addresses = NULL;
+  return UV_ENOSYS;
+}
+#else  /* SUNOS_NO_IFADDRS */
+/*
+ * Inspired By:
+ * https://blogs.oracle.com/paulie/entry/retrieving_mac_address_in_solaris
+ * http://www.pauliesworld.org/project/getmac.c
+ */
+static int uv__set_phys_addr(uv_interface_address_t* address,
+                             struct ifaddrs* ent) {
+
+  struct sockaddr_dl* sa_addr;
+  int sockfd;
+  size_t i;
+  struct arpreq arpreq;
+
+  /* This appears to only work as root */
+  sa_addr = (struct sockaddr_dl*)(ent->ifa_addr);
+  memcpy(address->phys_addr, LLADDR(sa_addr), sizeof(address->phys_addr));
+  for (i = 0; i < sizeof(address->phys_addr); i++) {
+    /* Check that all bytes of phys_addr are zero. */
+    if (address->phys_addr[i] != 0)
+      return 0;
+  }
+  memset(&arpreq, 0, sizeof(arpreq));
+  if (address->address.address4.sin_family == AF_INET) {
+    struct sockaddr_in* sin = ((struct sockaddr_in*)&arpreq.arp_pa);
+    sin->sin_addr.s_addr = address->address.address4.sin_addr.s_addr;
+  } else if (address->address.address4.sin_family == AF_INET6) {
+    struct sockaddr_in6* sin = ((struct sockaddr_in6*)&arpreq.arp_pa);
+    memcpy(sin->sin6_addr.s6_addr,
+           address->address.address6.sin6_addr.s6_addr,
+           sizeof(address->address.address6.sin6_addr.s6_addr));
+  } else {
+    return 0;
+  }
+
+  sockfd = socket(AF_INET, SOCK_DGRAM, 0);
+  if (sockfd < 0)
+    return UV__ERR(errno);
+
+  if (ioctl(sockfd, SIOCGARP, (char*)&arpreq) == -1) {
+    uv__close(sockfd);
+    return UV__ERR(errno);
+  }
+  memcpy(address->phys_addr, arpreq.arp_ha.sa_data, sizeof(address->phys_addr));
+  uv__close(sockfd);
+  return 0;
+}
+
+
+static int uv__ifaddr_exclude(struct ifaddrs *ent) {
+  if (!((ent->ifa_flags & IFF_UP) && (ent->ifa_flags & IFF_RUNNING)))
+    return 1;
+  if (ent->ifa_addr == NULL)
+    return 1;
+  if (ent->ifa_addr->sa_family != AF_INET &&
+      ent->ifa_addr->sa_family != AF_INET6)
+    return 1;
+  return 0;
+}
+
+int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
+  uv_interface_address_t* address;
+  struct ifaddrs* addrs;
+  struct ifaddrs* ent;
+  size_t namelen;
+  char* name;
+
+  *count = 0;
+  *addresses = NULL;
+
+  if (getifaddrs(&addrs))
+    return UV__ERR(errno);
+
+  /* Count the number of interfaces */
+  namelen = 0;
+  for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
+    if (uv__ifaddr_exclude(ent))
+      continue;
+    namelen += strlen(ent->ifa_name) + 1;
+    (*count)++;
+  }
+
+  if (*count == 0) {
+    freeifaddrs(addrs);
+    return 0;
+  }
+
+  *addresses = uv__calloc(1, *count * sizeof(**addresses) + namelen);
+  if (*addresses == NULL) {
+    freeifaddrs(addrs);
+    return UV_ENOMEM;
+  }
+
+  name = (char*) &(*addresses)[*count];
+  address = *addresses;
+
+  for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
+    if (uv__ifaddr_exclude(ent))
+      continue;
+
+    namelen = strlen(ent->ifa_name) + 1;
+    address->name = memcpy(name, ent->ifa_name, namelen);
+    name += namelen;
+
+    if (ent->ifa_addr->sa_family == AF_INET6) {
+      address->address.address6 = *((struct sockaddr_in6*) ent->ifa_addr);
+    } else {
+      address->address.address4 = *((struct sockaddr_in*) ent->ifa_addr);
+    }
+
+    if (ent->ifa_netmask->sa_family == AF_INET6) {
+      address->netmask.netmask6 = *((struct sockaddr_in6*) ent->ifa_netmask);
+    } else {
+      address->netmask.netmask4 = *((struct sockaddr_in*) ent->ifa_netmask);
+    }
+
+    address->is_internal = !!((ent->ifa_flags & IFF_PRIVATE) ||
+                           (ent->ifa_flags & IFF_LOOPBACK));
+
+    uv__set_phys_addr(address, ent);
+    address++;
+  }
+
+  freeifaddrs(addrs);
+
+  return 0;
+}
+#endif  /* SUNOS_NO_IFADDRS */
+
+void uv_free_interface_addresses(uv_interface_address_t* addresses,
+                                 int count) {
+  uv__free(addresses);
+}
+
+
+#if !defined(_POSIX_VERSION) || _POSIX_VERSION < 200809L
+size_t strnlen(const char* s, size_t maxlen) {
+  const char* end;
+  end = memchr(s, '\0', maxlen);
+  if (end == NULL)
+    return maxlen;
+  return end - s;
+}
+#endif