openwrtv4/toolchain/uClibc/patches/170-enable-getifaddrs.patch

--- a/libc/inet/ifaddrs.c
+++ b/libc/inet/ifaddrs.c
@@ -38,6 +38,7 @@
 #include <unistd.h>
 
 #include "netlinkaccess.h"
+#include "ifaddrs.h"
 
 libc_hidden_proto(socket)
 libc_hidden_proto(close)
@@ -57,7 +58,6 @@ libc_hidden_proto(abort)
 
 
 #if __ASSUME_NETLINK_SUPPORT
-#if 0 /* unused code */
 /* struct to hold the data for one ifaddrs entry, so we can allocate
    everything at once.  */
 struct ifaddrs_storage
@@ -74,8 +74,6 @@ struct ifaddrs_storage
   } addr, netmask, broadaddr;
   char name[IF_NAMESIZE + 1];
 };
-#endif /* unused code */
-
 
 void
 __netlink_free_handle (struct netlink_handle *h)
@@ -323,8 +321,6 @@ __netlink_open (struct netlink_handle *h
   return 0;
 }
 
-
-#if 0 /* unused code */
 /* We know the number of RTM_NEWLINK entries, so we reserve the first
    # of entries for this type. All RTM_NEWADDR entries have an index
    pointer to the RTM_NEWLINK entry.  To find the entry, create
@@ -562,7 +558,7 @@ getifaddrs (struct ifaddrs **ifap)
 		      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,
+			  *(char *) mempcpy (ifas[ifa_index].name, rta_data,
 					       rta_payload) = '\0';
 			}
 		      break;
@@ -761,7 +757,7 @@ getifaddrs (struct ifaddrs **ifap)
 		      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,
+			  *(char *) mempcpy (ifas[ifa_index].name, rta_data,
 					       rta_payload) = '\0';
 			}
 		      else
@@ -872,6 +868,4 @@ freeifaddrs (struct ifaddrs *ifa)
 }
 #endif
 
-#endif /* unused code */
-
 #endif /* __ASSUME_NETLINK_SUPPORT */
--- a/libc/inet/netlinkaccess.h
+++ b/libc/inet/netlinkaccess.h
@@ -61,14 +61,11 @@ struct netlink_handle
 };
 
 
-#if 0 /* unused code */
 #if __ASSUME_NETLINK_SUPPORT == 0
 extern int __no_netlink_support attribute_hidden;
 #else
 # define __no_netlink_support 0
 #endif
-#endif /* unused code */
-
 
 extern int __netlink_open (struct netlink_handle *h) attribute_hidden;
 extern void __netlink_close (struct netlink_handle *h) attribute_hidden;
--- /dev/null
+++ b/include/ifaddrs.h
@@ -0,0 +1,74 @@
+/* ifaddrs.h -- declarations for getting network interface addresses
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _IFADDRS_H
+#define _IFADDRS_H	1
+
+#include <features.h>
+#include <sys/socket.h>
+
+__BEGIN_DECLS
+
+/* The `getifaddrs' function generates a linked list of these structures.
+   Each element of the list describes one network interface.  */
+struct ifaddrs
+{
+  struct ifaddrs *ifa_next;	/* Pointer to the next structure.  */
+
+  char *ifa_name;		/* Name of this network interface.  */
+  unsigned int ifa_flags;	/* Flags as from SIOCGIFFLAGS ioctl.  */
+
+  struct sockaddr *ifa_addr;	/* Network address of this interface.  */
+  struct sockaddr *ifa_netmask; /* Netmask of this interface.  */
+  union
+  {
+    /* At most one of the following two is valid.  If the IFF_BROADCAST
+       bit is set in `ifa_flags', then `ifa_broadaddr' is valid.  If the
+       IFF_POINTOPOINT bit is set, then `ifa_dstaddr' is valid.
+       It is never the case that both these bits are set at once.  */
+    struct sockaddr *ifu_broadaddr; /* Broadcast address of this interface. */
+    struct sockaddr *ifu_dstaddr; /* Point-to-point destination address.  */
+  } ifa_ifu;
+  /* These very same macros are defined by <net/if.h> for `struct ifaddr'.
+     So if they are defined already, the existing definitions will be fine.  */
+# ifndef ifa_broadaddr
+#  define ifa_broadaddr	ifa_ifu.ifu_broadaddr
+# endif
+# ifndef ifa_dstaddr
+#  define ifa_dstaddr	ifa_ifu.ifu_dstaddr
+# endif
+
+  void *ifa_data;		/* Address-specific data (may be unused).  */
+};
+
+
+/* Create a linked list of `struct ifaddrs' structures, one for each
+   network interface on the host machine.  If successful, store the
+   list in *IFAP and return 0.  On errors, return -1 and set `errno'.
+
+   The storage returned in *IFAP is allocated dynamically and can
+   only be properly freed by passing it to `freeifaddrs'.  */
+extern int getifaddrs (struct ifaddrs **__ifap) __THROW;
+
+/* Reclaim the storage allocated by a previous `getifaddrs' call.  */
+extern void freeifaddrs (struct ifaddrs *__ifa)  __THROW;
+
+__END_DECLS
+
+#endif /* ifaddrs.h */