text: /* 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 "../../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 -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);
  
    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 -errno;
  
    if (port_dissociate(loop->backend_fd, PORT_SOURCE_FD, fd))
      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;
    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;
  
    if (loop->nfds == 0) {
      assert(QUEUE_EMPTY(&loop->watcher_queue));
      return;
    }
  
    while (!QUEUE_EMPTY(&loop->watcher_queue)) {
      q = QUEUE_HEAD(&loop->watcher_queue);
      QUEUE_REMOVE(q);
      QUEUE_INIT(q);
  
      w = 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))
        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. */
  
    for (;;) {
      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
          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 (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
          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 && QUEUE_EMPTY(&w->watcher_queue))
          QUEUE_INSERT_TAIL(&loop->watcher_queue, &w->watcher_queue);
      }
  
      if (have_signals != 0)
        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 -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 -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);
  }
  
  
  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 == -1)
      return -EBADF;
  
    if (port_associate(handle->loop->fs_fd,
                       PORT_SOURCE_FILE,
                       (uintptr_t) &handle->fo,
                       FILE_ATTRIB | FILE_MODIFIED,
                       handle) == -1) {
      return -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");
  
      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 -EINVAL;
  
    first_run = 0;
    if (handle->loop->fs_fd == -1) {
      portfd = port_create();
      if (portfd == -1)
        return -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) {
      uv__io_init(&handle->loop->fs_event_watcher, uv__fs_event_read, portfd);
      uv__io_start(handle->loop, &handle->loop->fs_event_watcher, POLLIN);
    }
  
    return 0;
  }
  
  
  int uv_fs_event_stop(uv_fs_event_t* handle) {
    if (!uv__is_active(handle))
      return 0;
  
    if (handle->fd == PORT_FIRED || handle->fd == PORT_LOADED) {
      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;
    uv__handle_stop(handle);
  
    return 0;
  }
  
  void uv__fs_event_close(uv_fs_event_t* handle) {
    uv_fs_event_stop(handle);
  }
  
  #else /* !defined(PORT_SOURCE_FILE) */
  
  int uv_fs_event_init(uv_loop_t* loop, uv_fs_event_t* handle) {
    return -ENOSYS;
  }
  
  
  int uv_fs_event_start(uv_fs_event_t* handle,
                        uv_fs_event_cb cb,
                        const char* filename,
                        unsigned int flags) {
    return -ENOSYS;
  }
  
  
  int uv_fs_event_stop(uv_fs_event_t* handle) {
    return -ENOSYS;
  }
  
  
  void uv__fs_event_close(uv_fs_event_t* handle) {
    UNREACHABLE();
  }
  
  #endif /* defined(PORT_SOURCE_FILE) */
  
  
  char** uv_setup_args(int argc, char** argv) {
    return argv;
  }
  
  
  int uv_set_process_title(const char* title) {
    return 0;
  }
  
  
  int uv_get_process_title(char* buffer, size_t size) {
    if (buffer == NULL || size == 0)
      return -EINVAL;
  
    buffer[0] = '\0';
    return 0;
  }
  
  
  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 -errno;
  
    /* FIXME(bnoordhuis) Handle EINTR. */
    err = -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 -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 -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 -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;
  }
  
  
  void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count) {
    int i;
  
    for (i = 0; i < count; i++) {
      uv__free(cpu_infos[i].model);
    }
  
    uv__free(cpu_infos);
  }
  
  #ifdef SUNOS_NO_IFADDRS
  int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
    return -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;
    int 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++) {
      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 -errno;
  
    if (ioctl(sockfd, SIOCGARP, (char*)&arpreq) == -1) {
      uv__close(sockfd);
      return -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 == PF_PACKET)
      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;
    int i;
  
    if (getifaddrs(&addrs))
      return -errno;
  
    *count = 0;
  
    /* Count the number of interfaces */
    for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
      if (uv__ifaddr_exclude(ent))
        continue;
      (*count)++;
    }
  
    *addresses = uv__malloc(*count * sizeof(**addresses));
    if (!(*addresses)) {
      freeifaddrs(addrs);
      return -ENOMEM;
    }
  
    address = *addresses;
  
    for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
      if (uv__ifaddr_exclude(ent))
        continue;
  
      address->name = uv__strdup(ent->ifa_name);
  
      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) {
    int i;
  
    for (i = 0; i < count; i++) {
      uv__free(addresses[i].name);
    }
  
    uv__free(addresses);
  }
  