* rtnl_addr.c: Include <arpa/inet.h> and <linux/netdevice.h>.
(decode_ifa_address, decode_ifa_cacheinfo,
decode_ifa_flags): New functions.
(ifaddrmsg_nla_decoders): New array.
(decode_ifaddrmsg): Use it.
---
rtnl_addr.c | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 93 insertions(+), 1 deletion(-)
diff --git a/rtnl_addr.c b/rtnl_addr.c
index c7e37ea..c4bde06 100644
--- a/rtnl_addr.c
+++ b/rtnl_addr.c
@@ -32,16 +32,106 @@
#include "nlattr.h"
#include "print_fields.h"
+#include <arpa/inet.h>
+
#include "netlink.h"
#include <linux/rtnetlink.h>
#ifdef HAVE_LINUX_IF_ADDR_H
# include <linux/if_addr.h>
#endif
+#include <linux/netdevice.h>
#include "xlat/ifaddrflags.h"
#include "xlat/routing_scopes.h"
#include "xlat/rtnl_addr_attrs.h"
+static bool
+decode_ifa_address(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ const struct ifaddrmsg *const ifaddr = opaque_data;
+ const unsigned int addr_len =
+ len < MAX_ADDR_LEN ? len : MAX_ADDR_LEN;
+ char buf[MAX_ADDR_LEN];
+
+ if (!umoven_or_printaddr(tcp, addr, addr_len, buf)) {
+ switch (ifaddr->ifa_family) {
+ case AF_INET: {
+ char str[INET_ADDRSTRLEN];
+
+ if (addr_len < sizeof(struct in_addr)
+ || !inet_ntop(AF_INET, buf, str, sizeof(str)))
+ return false;
+ tprints(str);
+ break;
+ }
+ case AF_INET6: {
+ char str[INET6_ADDRSTRLEN];
+
+ if (addr_len < sizeof(struct in6_addr)
+ || !inet_ntop(AF_INET6, buf, str, sizeof(str)))
+ break;
+ tprints(str);
+ break;
+ }
+ default:
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static bool
+decode_ifa_cacheinfo(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ struct ifa_cacheinfo ci;
+
+ if (len < sizeof(ci))
+ return false;
+ else if (!umove_or_printaddr(tcp, addr, &ci)) {
+ PRINT_FIELD_U("{", ci, ifa_prefered);
+ PRINT_FIELD_U(", ", ci, ifa_valid);
+ PRINT_FIELD_U(", ", ci, cstamp);
+ PRINT_FIELD_U(", ", ci, tstamp);
+ tprintf("}");
+ }
+
+ return true;
+}
+
+static bool
+decode_ifa_flags(struct tcb *const tcp,
+ const kernel_ulong_t addr,
+ const unsigned int len,
+ const void *const opaque_data)
+{
+ uint32_t ifa_flags;
+
+ if (len < sizeof(ifa_flags))
+ return false;
+ else if (!umove_or_printaddr(tcp, addr, &ifa_flags))
+ printflags(ifaddrflags, ifa_flags, "IFA_F_???");
+
+ return true;
+}
+
+static const nla_decoder_t ifaddrmsg_nla_decoders[] = {
+ [IFA_ADDRESS] = decode_ifa_address,
+ [IFA_LOCAL] = decode_ifa_address,
+ [IFA_LABEL] = decode_nla_str,
+ [IFA_BROADCAST] = decode_ifa_address,
+ [IFA_ANYCAST] = decode_ifa_address,
+ [IFA_CACHEINFO] = decode_ifa_cacheinfo,
+ [IFA_MULTICAST] = decode_ifa_address,
+ [IFA_FLAGS] = decode_ifa_flags
+};
+
DECL_NETLINK_ROUTE_DECODER(decode_ifaddrmsg)
{
struct ifaddrmsg ifaddr = { .ifa_family = family };
@@ -71,6 +161,8 @@ DECL_NETLINK_ROUTE_DECODER(decode_ifaddrmsg)
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
- rtnl_addr_attrs, "IFA_???", NULL, 0, NULL);
+ rtnl_addr_attrs, "IFA_???",
+ ifaddrmsg_nla_decoders,
+ ARRAY_SIZE(ifaddrmsg_nla_decoders), &ifaddr);
}
}
--
2.7.4
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