dns_bind9.patch
author Hajime Tazaki <tazaki@nict.go.jp>
Wed, 04 Jul 2012 17:06:26 +0900
changeset 24 02787e1dfd96
parent 20 5ca51e147e7f
permissions -rw-r--r--
cleanup patch

diff -r 47d46e790e10 example/dce-unbound.cc
--- a/example/dce-unbound.cc	Wed Jul 04 16:59:42 2012 +0900
+++ b/example/dce-unbound.cc	Wed Jul 04 17:00:29 2012 +0900
@@ -47,8 +47,8 @@
 
   DceManagerHelper processManager;
   processManager.SetLoader ("ns3::DlmLoaderFactory");
-  // processManager.SetTaskManagerAttribute ("FiberManagerType",
-  //                                         EnumValue (0));
+  processManager.SetTaskManagerAttribute ("FiberManagerType",
+                                          EnumValue (0));
   processManager.SetNetworkStack("ns3::LinuxSocketFdFactory",
 				 "Library", StringValue ("libnet-next-2.6.so"));
   processManager.Install (nodes);
@@ -66,12 +66,25 @@
   DceApplicationHelper process;
   ApplicationContainer apps;
 
+#if 0
   process.SetBinary ("unbound");
   process.ResetArguments ();
   process.ParseArguments ("-d");
   process.SetStackSize (1<<16);
   apps = process.Install (nodes.Get (0));
   apps.Start (Seconds (1.0));
+#else
+  process.SetBinary ("named");
+  process.ResetArguments ();
+  process.ParseArguments ("-4");
+  process.ParseArguments ("-u");
+  process.ParseArguments ("root");
+  process.ParseArguments ("-c");
+  process.ParseArguments ("/etc/namedb/named.conf");
+  process.SetStackSize (1<<16);
+  apps = process.Install (nodes.Get (0));
+  apps.Start (Seconds (1.0));
+#endif
 
   for (int i = 0; i < 20; i++)
     {
diff -r 47d46e790e10 model/dce-netdb.cc
--- a/model/dce-netdb.cc	Wed Jul 04 16:59:42 2012 +0900
+++ b/model/dce-netdb.cc	Wed Jul 04 17:00:29 2012 +0900
@@ -8,6 +8,15 @@
 #include <string.h>
 #include "process.h"
 #include "errno.h"
+#include <net/if.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <ifaddrs.h>
+#include <linux/netlink.h>
+#include <linux/rtnetlink.h>
+#include "sys/dce-socket.h"
+#include "dce-unistd.h"
+#include "dce-signal.h"
 
 NS_LOG_COMPONENT_DEFINE ("DceNetdb");
 
@@ -188,3 +197,719 @@
 
   fprintf (*Current ()->process->pstderr, "%s : %s\n", string, "ERROR");
 }
+
+// Copy from glibc source
+// eglibc-2.11.1/sysdeps/unix/sysv/linux/ifaddr.c
+struct netlink_res
+{
+  struct netlink_res *next;
+  struct nlmsghdr *nlh;
+  size_t size;			/* Size of response.  */
+  uint32_t seq;			/* sequential number we used.  */
+};
+struct netlink_handle
+{
+  int fd;			/* Netlink file descriptor.  */
+  pid_t pid;			/* Process ID.  */
+  uint32_t seq;			/* The sequence number we use currently.  */
+  struct netlink_res *nlm_list;	/* Pointer to list of responses.  */
+  struct netlink_res *end_ptr;	/* For faster append of new entries.  */
+};
+struct sockaddr_ll_max
+  {
+    unsigned short int sll_family;
+    unsigned short int sll_protocol;
+    int sll_ifindex;
+    unsigned short int sll_hatype;
+    unsigned char sll_pkttype;
+    unsigned char sll_halen;
+    unsigned char sll_addr[24];
+  };
+struct ifaddrs_storage
+{
+  struct ifaddrs ifa;
+  union
+  {
+    /* Save space for the biggest of the four used sockaddr types and
+       avoid a lot of casts.  */
+    struct sockaddr sa;
+    struct sockaddr_ll_max sl;
+    struct sockaddr_in s4;
+    struct sockaddr_in6 s6;
+  } addr, netmask, broadaddr;
+  char name[IF_NAMESIZE + 1];
+};
+#define PAGE_SIZE 4096
+static int
+netlink_request (struct netlink_handle *h, int type)
+{
+  int ret;
+  struct sockaddr_nl snl;
+  int save_errno;
+  struct netlink_res *nlm_next;
+  struct sockaddr_nl nladdr;
+  struct nlmsghdr *nlmh;
+  ssize_t read_len;
+  bool done = false;
+
+  struct
+  {
+    struct nlmsghdr nlh;
+    struct rtgenmsg g;
+  } req;
+
+  memset (&snl, 0, sizeof snl);
+  snl.nl_family = AF_NETLINK;
+
+  memset (&req, 0, sizeof req);
+  req.nlh.nlmsg_len = sizeof req;
+  req.nlh.nlmsg_type = type;
+  req.nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
+  req.nlh.nlmsg_pid = h->pid;
+  req.nlh.nlmsg_seq = ++h->seq;
+  req.g.rtgen_family = AF_UNSPEC;
+
+  ret = dce_sendto (h->fd, (void *) &req, sizeof req, 0,
+                (struct sockaddr *) &snl, sizeof snl);
+  if (ret < 0)
+    {
+      return -1;
+    }
+
+  char *buf;
+  const size_t buf_size = PAGE_SIZE;
+  buf = (char *)dce_malloc (buf_size);
+  if (!buf)
+    return -1;
+  struct iovec iov = { buf, buf_size };
+
+  while (! done)
+    {
+      struct msghdr msg =
+        {
+          (void *) &nladdr, sizeof (nladdr),
+          &iov, 1,
+          NULL, 0,
+          0
+        };
+
+      read_len = dce_recvmsg (h->fd, &msg, 0);
+      if (read_len < 0)
+        goto out_fail;
+
+      if (nladdr.nl_pid != 0)
+        continue;
+
+      if (__builtin_expect (msg.msg_flags & MSG_TRUNC, 0))
+        goto out_fail;
+
+      size_t count = 0;
+      size_t remaining_len = read_len;
+      for (nlmh = (struct nlmsghdr *) buf;
+           NLMSG_OK (nlmh, remaining_len);
+           nlmh = (struct nlmsghdr *) NLMSG_NEXT (nlmh, remaining_len))
+        {
+          if ((pid_t) nlmh->nlmsg_pid != h->pid
+              || nlmh->nlmsg_seq != h->seq)
+            continue;
+
+          ++count;
+          if (nlmh->nlmsg_type == NLMSG_DONE)
+            {
+              /* We found the end, leave the loop.  */
+              done = true;
+              break;
+            }
+          if (nlmh->nlmsg_type == NLMSG_ERROR)
+            {
+              struct nlmsgerr *nlerr = (struct nlmsgerr *) NLMSG_DATA (nlmh);
+              if (nlmh->nlmsg_len < NLMSG_LENGTH (sizeof (struct nlmsgerr)))
+                errno = EIO;
+              else
+                errno = -nlerr->error;
+              goto out_fail;
+            }
+        }
+
+      /* If there was nothing with the expected nlmsg_pid and nlmsg_seq,
+         there is no point to record it.  */
+      if (count == 0)
+        continue;
+
+      nlm_next = (struct netlink_res *) malloc (sizeof (struct netlink_res)
+                                                + read_len);
+      if (nlm_next == NULL)
+        goto out_fail;
+      nlm_next->next = NULL;
+      nlm_next->nlh = (struct nlmsghdr *)memcpy (nlm_next + 1, buf, read_len);
+      nlm_next->size = read_len;
+      nlm_next->seq = h->seq;
+      if (h->nlm_list == NULL)
+        h->nlm_list = nlm_next;
+      else
+        h->end_ptr->next = nlm_next;
+      h->end_ptr = nlm_next;
+    }
+
+  dce_free (buf);
+  return 0;
+
+out_fail:
+  dce_free (buf);
+  return -1;
+}
+
+static int
+map_newlink (int index, struct ifaddrs_storage *ifas, int *map, int max)
+{
+  int i;
+
+  for (i = 0; i < max; i++)
+    {
+      if (map[i] == -1)
+	{
+	  map[i] = index;
+	  if (i > 0)
+	    ifas[i - 1].ifa.ifa_next = &ifas[i].ifa;
+	  return i;
+	}
+      else if (map[i] == index)
+	return i;
+    }
+  /* This should never be reached. If this will be reached, we have
+     a very big problem.  */
+  dce_abort ();
+}
+
+static void
+__netlink_free_handle (struct netlink_handle *h)
+{
+  struct netlink_res *ptr;
+  int saved_errno = errno;
+
+  ptr = h->nlm_list;
+  while (ptr != NULL)
+    {
+      struct netlink_res *tmpptr;
+
+      tmpptr = ptr->next;
+      free (ptr);
+      ptr = tmpptr;
+    }
+
+  Current ()->err = saved_errno;
+}
+
+/*
+ * Try to emulate netlink socket query to work both ns3 stack and
+ * linux stack.
+ */
+int
+dce_getifaddrs (struct ifaddrs **ifap)
+{
+  struct netlink_handle nh = {0, 0, 0, NULL, NULL};
+  struct sockaddr_nl nladdr;
+  struct netlink_res *nlp;
+  struct ifaddrs_storage *ifas;
+  unsigned int i, newlink, newaddr, newaddr_idx;
+  int *map_newlink_data;
+  size_t ifa_data_size = 0;  /* Size to allocate for all ifa_data.  */
+  char *ifa_data_ptr;	/* Pointer to the unused part of memory for
+                           ifa_data.  */
+  int result = 0;
+
+  nh.fd = dce_socket (PF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
+  if (nh.fd < 0)
+    {
+      Current ()->err = EINVAL;
+      return -1;
+    }
+
+  memset (&nladdr, 0, sizeof (nladdr));
+  nladdr.nl_family = AF_NETLINK;
+  if (dce_bind (nh.fd, (struct sockaddr *) &nladdr, sizeof (nladdr)) < 0)
+    {
+      dce_close (nh.fd);
+      Current ()->err = EINVAL;
+      return -1;
+    }
+  socklen_t addr_len = sizeof (nladdr);
+  if (dce_getsockname (nh.fd, (struct sockaddr *) &nladdr, &addr_len) < 0)
+    {
+      dce_close (nh.fd);
+      Current ()->err = EINVAL;
+      return -1;
+    }
+  nh.pid = nladdr.nl_pid;
+
+
+  if (netlink_request (&nh, RTM_GETLINK) < 0)
+    {
+      dce_close (nh.fd);
+      Current ()->err = EINVAL;
+      return -1;
+    }
+
+  ++nh.seq;
+  if (netlink_request (&nh, RTM_GETADDR) < 0)
+    {
+      dce_close (nh.fd);
+      Current ()->err = EINVAL;
+      return -1;
+    }
+
+
+
+  newlink = newaddr = 0;
+  for (nlp = nh.nlm_list; nlp; nlp = nlp->next)
+    {
+      struct nlmsghdr *nlh;
+      size_t size = nlp->size;
+
+      if (nlp->nlh == NULL)
+	continue;
+
+      /* Walk through all entries we got from the kernel and look, which
+	 message type they contain.  */
+      for (nlh = nlp->nlh; NLMSG_OK (nlh, size); nlh = NLMSG_NEXT (nlh, size))
+	{
+	  /* Check if the message is what we want.  */
+	  if ((pid_t) nlh->nlmsg_pid != nh.pid || nlh->nlmsg_seq != nlp->seq)
+	    continue;
+
+	  if (nlh->nlmsg_type == NLMSG_DONE)
+	    break;		/* ok */
+
+	  if (nlh->nlmsg_type == RTM_NEWLINK)
+	    {
+	      /* A RTM_NEWLINK message can have IFLA_STATS data. We need to
+		 know the size before creating the list to allocate enough
+		 memory.  */
+	      struct ifinfomsg *ifim = (struct ifinfomsg *) NLMSG_DATA (nlh);
+	      struct rtattr *rta = IFLA_RTA (ifim);
+	      size_t rtasize = IFLA_PAYLOAD (nlh);
+
+	      while (RTA_OK (rta, rtasize))
+		{
+		  size_t rta_payload = RTA_PAYLOAD (rta);
+
+		  if (rta->rta_type == IFLA_STATS)
+		    {
+		      ifa_data_size += rta_payload;
+		      break;
+		    }
+		  else
+		    rta = RTA_NEXT (rta, rtasize);
+		}
+	      ++newlink;
+	    }
+	  else if (nlh->nlmsg_type == RTM_NEWADDR)
+	    ++newaddr;
+	}
+    }
+
+  /* Return if no interface is up.  */
+  if ((newlink + newaddr) == 0)
+    goto exit_free;
+
+  /* Allocate memory for all entries we have and initialize next
+     pointer.  */
+  ifas = (struct ifaddrs_storage *) calloc (1,
+					    (newlink + newaddr)
+					    * sizeof (struct ifaddrs_storage)
+					    + ifa_data_size);
+  if (ifas == NULL)
+    {
+      result = -1;
+      goto exit_free;
+    }
+
+  /* Table for mapping kernel index to entry in our list.  */
+  map_newlink_data = (int *)alloca (newlink * sizeof (int));
+  memset (map_newlink_data, '\xff', newlink * sizeof (int));
+
+  ifa_data_ptr = (char *) &ifas[newlink + newaddr];
+  newaddr_idx = 0;		/* Counter for newaddr index.  */
+
+  /* Walk through the list of data we got from the kernel.  */
+  for (nlp = nh.nlm_list; nlp; nlp = nlp->next)
+    {
+      struct nlmsghdr *nlh;
+      size_t size = nlp->size;
+
+      if (nlp->nlh == NULL)
+	continue;
+
+      /* Walk through one message and look at the type: If it is our
+	 message, we need RTM_NEWLINK/RTM_NEWADDR and stop if we reach
+	 the end or we find the end marker (in this case we ignore the
+	 following data.  */
+      for (nlh = nlp->nlh; NLMSG_OK (nlh, size); nlh = NLMSG_NEXT (nlh, size))
+	{
+	  int ifa_index = 0;
+
+	  /* Check if the message is the one we want */
+	  if ((pid_t) nlh->nlmsg_pid != nh.pid || nlh->nlmsg_seq != nlp->seq)
+	    continue;
+
+	  if (nlh->nlmsg_type == NLMSG_DONE)
+	    break;		/* ok */
+
+	  if (nlh->nlmsg_type == RTM_NEWLINK)
+	    {
+	      /* We found a new interface. Now extract everything from the
+		 interface data we got and need.  */
+	      struct ifinfomsg *ifim = (struct ifinfomsg *) NLMSG_DATA (nlh);
+	      struct rtattr *rta = IFLA_RTA (ifim);
+	      size_t rtasize = IFLA_PAYLOAD (nlh);
+
+	      /* Interfaces are stored in the first "newlink" entries
+		 of our list, starting in the order as we got from the
+		 kernel.  */
+	      ifa_index = map_newlink (ifim->ifi_index - 1, ifas,
+				       map_newlink_data, newlink);
+	      ifas[ifa_index].ifa.ifa_flags = ifim->ifi_flags;
+
+	      while (RTA_OK (rta, rtasize))
+		{
+		  char *rta_data = (char *)RTA_DATA (rta);
+		  size_t rta_payload = RTA_PAYLOAD (rta);
+
+		  switch (rta->rta_type)
+		    {
+		    case IFLA_ADDRESS:
+		      if (rta_payload <= sizeof (ifas[ifa_index].addr))
+			{
+			  ifas[ifa_index].addr.sl.sll_family = AF_PACKET;
+			  memcpy (ifas[ifa_index].addr.sl.sll_addr,
+				  (char *) rta_data, rta_payload);
+			  ifas[ifa_index].addr.sl.sll_halen = rta_payload;
+			  ifas[ifa_index].addr.sl.sll_ifindex
+			    = ifim->ifi_index;
+			  ifas[ifa_index].addr.sl.sll_hatype = ifim->ifi_type;
+
+			  ifas[ifa_index].ifa.ifa_addr
+			    = &ifas[ifa_index].addr.sa;
+			}
+		      break;
+
+		    case IFLA_BROADCAST:
+		      if (rta_payload <= sizeof (ifas[ifa_index].broadaddr))
+			{
+			  ifas[ifa_index].broadaddr.sl.sll_family = AF_PACKET;
+			  memcpy (ifas[ifa_index].broadaddr.sl.sll_addr,
+				  (char *) rta_data, rta_payload);
+			  ifas[ifa_index].broadaddr.sl.sll_halen = rta_payload;
+			  ifas[ifa_index].broadaddr.sl.sll_ifindex
+			    = ifim->ifi_index;
+			  ifas[ifa_index].broadaddr.sl.sll_hatype
+			    = ifim->ifi_type;
+
+			  ifas[ifa_index].ifa.ifa_broadaddr
+			    = &ifas[ifa_index].broadaddr.sa;
+			}
+		      break;
+
+		    case IFLA_IFNAME:	/* Name of Interface */
+		      if ((rta_payload + 1) <= sizeof (ifas[ifa_index].name))
+			{
+			  ifas[ifa_index].ifa.ifa_name = ifas[ifa_index].name;
+			  *(char *) __mempcpy (ifas[ifa_index].name, rta_data,
+					       rta_payload) = '\0';
+			}
+		      break;
+
+		    case IFLA_STATS:	/* Statistics of Interface */
+		      ifas[ifa_index].ifa.ifa_data = ifa_data_ptr;
+		      ifa_data_ptr += rta_payload;
+		      memcpy (ifas[ifa_index].ifa.ifa_data, rta_data,
+			      rta_payload);
+		      break;
+
+		    case IFLA_UNSPEC:
+		      break;
+		    case IFLA_MTU:
+		      break;
+		    case IFLA_LINK:
+		      break;
+		    case IFLA_QDISC:
+		      break;
+		    default:
+		      break;
+		    }
+
+		  rta = RTA_NEXT (rta, rtasize);
+		}
+	    }
+	  else if (nlh->nlmsg_type == RTM_NEWADDR)
+	    {
+	      struct ifaddrmsg *ifam = (struct ifaddrmsg *) NLMSG_DATA (nlh);
+	      struct rtattr *rta = IFA_RTA (ifam);
+	      size_t rtasize = IFA_PAYLOAD (nlh);
+
+	      /* New Addresses are stored in the order we got them from
+		 the kernel after the interfaces. Theoretically it is possible
+		 that we have holes in the interface part of the list,
+		 but we always have already the interface for this address.  */
+	      ifa_index = newlink + newaddr_idx;
+	      ifas[ifa_index].ifa.ifa_flags
+		= ifas[map_newlink (ifam->ifa_index - 1, ifas,
+				    map_newlink_data, newlink)].ifa.ifa_flags;
+	      if (ifa_index > 0)
+		ifas[ifa_index - 1].ifa.ifa_next = &ifas[ifa_index].ifa;
+	      ++newaddr_idx;
+
+	      while (RTA_OK (rta, rtasize))
+		{
+		  char *rta_data = (char *)RTA_DATA (rta);
+		  size_t rta_payload = RTA_PAYLOAD (rta);
+
+		  switch (rta->rta_type)
+		    {
+		    case IFA_ADDRESS:
+		      {
+			struct sockaddr *sa;
+
+			if (ifas[ifa_index].ifa.ifa_addr != NULL)
+			  {
+			    /* In a point-to-poing network IFA_ADDRESS
+			       contains the destination address, local
+			       address is supplied in IFA_LOCAL attribute.
+			       destination address and broadcast address
+			       are stored in an union, so it doesn't matter
+			       which name we use.  */
+			    ifas[ifa_index].ifa.ifa_broadaddr
+			      = &ifas[ifa_index].broadaddr.sa;
+			    sa = &ifas[ifa_index].broadaddr.sa;
+			  }
+			else
+			  {
+			    ifas[ifa_index].ifa.ifa_addr
+			      = &ifas[ifa_index].addr.sa;
+			    sa = &ifas[ifa_index].addr.sa;
+			  }
+
+			sa->sa_family = ifam->ifa_family;
+
+			switch (ifam->ifa_family)
+			  {
+			  case AF_INET:
+			    /* Size must match that of an address for IPv4.  */
+			    if (rta_payload == 4)
+			      memcpy (&((struct sockaddr_in *) sa)->sin_addr,
+				      rta_data, rta_payload);
+			    break;
+
+			  case AF_INET6:
+			    /* Size must match that of an address for IPv6.  */
+			    if (rta_payload == 16)
+			      {
+				memcpy (&((struct sockaddr_in6 *) sa)->sin6_addr,
+					rta_data, rta_payload);
+				if (IN6_IS_ADDR_LINKLOCAL (rta_data)
+				    || IN6_IS_ADDR_MC_LINKLOCAL (rta_data))
+				  ((struct sockaddr_in6 *) sa)->sin6_scope_id
+				    = ifam->ifa_index;
+			      }
+			    break;
+
+			  default:
+			    if (rta_payload <= sizeof (ifas[ifa_index].addr))
+			      memcpy (sa->sa_data, rta_data, rta_payload);
+			    break;
+			  }
+		      }
+		      break;
+
+		    case IFA_LOCAL:
+		      if (ifas[ifa_index].ifa.ifa_addr != NULL)
+			{
+			  /* If ifa_addr is set and we get IFA_LOCAL,
+			     assume we have a point-to-point network.
+			     Move address to correct field.  */
+			  ifas[ifa_index].broadaddr = ifas[ifa_index].addr;
+			  ifas[ifa_index].ifa.ifa_broadaddr
+			    = &ifas[ifa_index].broadaddr.sa;
+			  memset (&ifas[ifa_index].addr, '\0',
+				  sizeof (ifas[ifa_index].addr));
+			}
+
+		      ifas[ifa_index].ifa.ifa_addr = &ifas[ifa_index].addr.sa;
+		      ifas[ifa_index].ifa.ifa_addr->sa_family
+			= ifam->ifa_family;
+
+		      switch (ifam->ifa_family)
+			{
+			case AF_INET:
+			  /* Size must match that of an address for IPv4.  */
+			  if (rta_payload == 4)
+			    memcpy (&ifas[ifa_index].addr.s4.sin_addr,
+				  rta_data, rta_payload);
+			  break;
+
+			case AF_INET6:
+			  /* Size must match that of an address for IPv6.  */
+			  if (rta_payload == 16)
+			    {
+			      memcpy (&ifas[ifa_index].addr.s6.sin6_addr,
+				      rta_data, rta_payload);
+			      if (IN6_IS_ADDR_LINKLOCAL (rta_data)
+				  || IN6_IS_ADDR_MC_LINKLOCAL (rta_data))
+				ifas[ifa_index].addr.s6.sin6_scope_id =
+				  ifam->ifa_index;
+			    }
+			  break;
+
+			default:
+			  if (rta_payload <= sizeof (ifas[ifa_index].addr))
+			    memcpy (ifas[ifa_index].addr.sa.sa_data,
+				    rta_data, rta_payload);
+			  break;
+			}
+		      break;
+
+		    case IFA_BROADCAST:
+		      /* We get IFA_BROADCAST, so IFA_LOCAL was too much.  */
+		      if (ifas[ifa_index].ifa.ifa_broadaddr != NULL)
+			memset (&ifas[ifa_index].broadaddr, '\0',
+				sizeof (ifas[ifa_index].broadaddr));
+
+		      ifas[ifa_index].ifa.ifa_broadaddr
+			= &ifas[ifa_index].broadaddr.sa;
+		      ifas[ifa_index].ifa.ifa_broadaddr->sa_family
+			= ifam->ifa_family;
+
+		      switch (ifam->ifa_family)
+			{
+			case AF_INET:
+			  /* Size must match that of an address for IPv4.  */
+			  if (rta_payload == 4)
+			    memcpy (&ifas[ifa_index].broadaddr.s4.sin_addr,
+				    rta_data, rta_payload);
+			  break;
+
+			case AF_INET6:
+			  /* Size must match that of an address for IPv6.  */
+			  if (rta_payload == 16)
+			    {
+			      memcpy (&ifas[ifa_index].broadaddr.s6.sin6_addr,
+				      rta_data, rta_payload);
+			      if (IN6_IS_ADDR_LINKLOCAL (rta_data)
+				  || IN6_IS_ADDR_MC_LINKLOCAL (rta_data))
+				ifas[ifa_index].broadaddr.s6.sin6_scope_id
+				  = ifam->ifa_index;
+			    }
+			  break;
+
+			default:
+			  if (rta_payload <= sizeof (ifas[ifa_index].addr))
+			    memcpy (&ifas[ifa_index].broadaddr.sa.sa_data,
+				    rta_data, rta_payload);
+			  break;
+			}
+		      break;
+
+		    case IFA_LABEL:
+		      if (rta_payload + 1 <= sizeof (ifas[ifa_index].name))
+			{
+			  ifas[ifa_index].ifa.ifa_name = ifas[ifa_index].name;
+			  *(char *) __mempcpy (ifas[ifa_index].name, rta_data,
+					       rta_payload) = '\0';
+			}
+		      else
+			abort ();
+		      break;
+
+		    case IFA_UNSPEC:
+		      break;
+		    case IFA_CACHEINFO:
+		      break;
+		    default:
+		      break;
+		    }
+
+		  rta = RTA_NEXT (rta, rtasize);
+		}
+
+	      /* If we didn't get the interface name with the
+		 address, use the name from the interface entry.  */
+	      if (ifas[ifa_index].ifa.ifa_name == NULL)
+		ifas[ifa_index].ifa.ifa_name
+		  = ifas[map_newlink (ifam->ifa_index - 1, ifas,
+				      map_newlink_data, newlink)].ifa.ifa_name;
+
+	      /* Calculate the netmask.  */
+	      if (ifas[ifa_index].ifa.ifa_addr
+		  && ifas[ifa_index].ifa.ifa_addr->sa_family != AF_UNSPEC
+		  && ifas[ifa_index].ifa.ifa_addr->sa_family != AF_PACKET)
+		{
+		  uint32_t max_prefixlen = 0;
+		  char *cp = NULL;
+
+		  ifas[ifa_index].ifa.ifa_netmask
+		    = &ifas[ifa_index].netmask.sa;
+
+		  switch (ifas[ifa_index].ifa.ifa_addr->sa_family)
+		    {
+		    case AF_INET:
+		      cp = (char *) &ifas[ifa_index].netmask.s4.sin_addr;
+		      max_prefixlen = 32;
+		      break;
+
+		    case AF_INET6:
+		      cp = (char *) &ifas[ifa_index].netmask.s6.sin6_addr;
+		      max_prefixlen = 128;
+		      break;
+		    }
+
+		  ifas[ifa_index].ifa.ifa_netmask->sa_family
+		    = ifas[ifa_index].ifa.ifa_addr->sa_family;
+
+		  if (cp != NULL)
+		    {
+		      char c;
+		      unsigned int preflen;
+
+		      if ((max_prefixlen > 0) &&
+			  (ifam->ifa_prefixlen > max_prefixlen))
+			preflen = max_prefixlen;
+		      else
+			preflen = ifam->ifa_prefixlen;
+
+		      for (i = 0; i < (preflen / 8); i++)
+			*cp++ = 0xff;
+		      c = 0xff;
+		      c <<= (8 - (preflen % 8));
+		      *cp = c;
+		    }
+		}
+	    }
+	}
+    }
+
+  NS_ASSERT (ifa_data_ptr <= (char *) &ifas[newlink + newaddr] + ifa_data_size);
+
+  if (newaddr_idx > 0)
+    {
+      for (i = 0; i < newlink; ++i)
+	if (map_newlink_data[i] == -1)
+	  {
+	    /* We have fewer links then we anticipated.  Adjust the
+	       forward pointer to the first address entry.  */
+	    ifas[i - 1].ifa.ifa_next = &ifas[newlink].ifa;
+	  }
+
+      if (i == 0 && newlink > 0)
+	/* No valid link, but we allocated memory.  We have to
+	   populate the first entry.  */
+	memmove (ifas, &ifas[newlink], sizeof (struct ifaddrs_storage));
+    }
+
+  *ifap = &ifas[0].ifa;
+
+ exit_free:
+  __netlink_free_handle (&nh);
+  dce_close (nh.fd);
+
+  return 0;
+}
diff -r 47d46e790e10 model/dce-netdb.h
--- a/model/dce-netdb.h	Wed Jul 04 16:59:42 2012 +0900
+++ b/model/dce-netdb.h	Wed Jul 04 17:00:29 2012 +0900
@@ -18,6 +18,7 @@
                        socklen_t hostlen, char *serv, socklen_t servlen, unsigned int flags);
 
 void dce_herror(const char *string);
+int dce_getifaddrs (struct ifaddrs **ifap);
 
 #ifdef __cplusplus
 }
diff -r 47d46e790e10 model/dce-syslog.cc
--- a/model/dce-syslog.cc	Wed Jul 04 16:59:42 2012 +0900
+++ b/model/dce-syslog.cc	Wed Jul 04 17:00:29 2012 +0900
@@ -66,6 +66,7 @@
   Process *process = Current ()->process;
 
   vfprintf (process->syslog, message, args);
+  fprintf (process->syslog, "\n");
 }
 
 void
diff -r 47d46e790e10 model/libc-dce.cc
--- a/model/libc-dce.cc	Wed Jul 04 16:59:42 2012 +0900
+++ b/model/libc-dce.cc	Wed Jul 04 17:00:29 2012 +0900
@@ -89,6 +89,7 @@
 #include <inttypes.h>
 #include <error.h>
 #include <netinet/ether.h>
+#include <nl_types.h>
 
 extern void __cxa_finalize (void *d);
 extern int __cxa_atexit (void (*func) (void *), void *arg, void *d);
diff -r 47d46e790e10 model/libc-ns3.h
--- a/model/libc-ns3.h	Wed Jul 04 16:59:42 2012 +0900
+++ b/model/libc-ns3.h	Wed Jul 04 17:00:29 2012 +0900
@@ -297,6 +297,10 @@
 DCE (remove)
 //NATIVE (sscanf)
 NATIVE_WITH_ALIAS2 (sscanf, __isoc99_sscanf)
+NATIVE (flockfile)
+NATIVE (funlockfile)
+ 
+
 
 // STDARG.H
 DCE (vprintf)
@@ -415,6 +419,8 @@
 DCE (gethostbyname2)
 DCE (getaddrinfo)
 DCE (freeaddrinfo)
+DCE    (getifaddrs)
+NATIVE (freeifaddrs)
 DCE (gai_strerror)
 NATIVE (gethostent)
 NATIVE (sethostent)
@@ -475,6 +481,8 @@
 
 // SYS/RESOURCE.H
 NATIVE (getrusage) // not sure if native call will give stats about the requested process..
+NATIVE (getrlimit)
+NATIVE (setrlimit)
 
 // SYSLOG.H
 DCE (openlog)
@@ -494,6 +502,8 @@
 NATIVE (bindtextdomain)
 NATIVE (textdomain)
 NATIVE (gettext)
+NATIVE (catopen)
+NATIVE (catgets)
 
 // PWD.H
 NATIVE (getpwnam)