On Wed, Nov 07, 2007 at 05:45:23PM +0100, Natanael Copa wrote:
Hi,
Does anyone know a susv3/POSIX compliant way to list all ipv6
interfaces? I bet there are no. ioctl(SIOCGIFCONF) ignores ipv6
interfaces, I just tested.
I suggest implementing a getifaddrs in uclibc, even if its not
susv3/POSIX.
here is one implementation based on glibc getifaddrs(). It should get
compiled in when you have UCLIBC_USE_NETLINK enabled.
Let me know if this is OK?
--
Khem Raj
MontaVista Software Inc.
Implement getifaddr() function for uclibc.
This is enabled with UCLIBC_USE_NETLINK config option.
Index: uclibc/libc/inet/ifaddrs.c
===
--- uclibc.orig/libc/inet/ifaddrs.c
+++ uclibc/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 */
Index: uclibc/libc/inet/netlinkaccess.h
===
--- uclibc.orig/libc/inet/netlinkaccess.h
+++ uclibc/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;
Index: uclibc/include/ifaddrs.h
===
--- /dev/null
+++ uclibc/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
