From: Tom Gundersen <teg@jklm.no>
Date: Sat, 10 May 2014 14:06:23 +0000 (+0200)
Subject: sd-rtnl: message - add support for getting prefixlen from address messages
X-Git-Tag: v213~194
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=f4e884dd1c4cc4bc6d5f068f96b14ceda46f3962

sd-rtnl: message - add support for getting prefixlen from address messages
---

diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c
index 9043c675a..d611207de 100644
--- a/src/libsystemd/sd-rtnl/rtnl-message.c
+++ b/src/libsystemd/sd-rtnl/rtnl-message.c
@@ -290,6 +290,21 @@ int sd_rtnl_message_addr_get_family(sd_rtnl_message *m, unsigned char *family) {
         return 0;
 }
 
+int sd_rtnl_message_addr_get_prefixlen(sd_rtnl_message *m, unsigned char *prefixlen) {
+        struct ifaddrmsg *ifa;
+
+        assert_return(m, -EINVAL);
+        assert_return(m->hdr, -EINVAL);
+        assert_return(rtnl_message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+        assert_return(prefixlen, -EINVAL);
+
+        ifa = NLMSG_DATA(m->hdr);
+
+        *prefixlen = ifa->ifa_prefixlen;
+
+        return 0;
+}
+
 int sd_rtnl_message_addr_get_scope(sd_rtnl_message *m, unsigned char *scope) {
         struct ifaddrmsg *ifa;
 
diff --git a/src/systemd/sd-rtnl.h b/src/systemd/sd-rtnl.h
index 93f5ab9b6..9059ed4dd 100644
--- a/src/systemd/sd-rtnl.h
+++ b/src/systemd/sd-rtnl.h
@@ -86,6 +86,7 @@ int sd_rtnl_message_addr_set_prefixlen(sd_rtnl_message *m, unsigned char prefixl
 int sd_rtnl_message_addr_set_scope(sd_rtnl_message *m, unsigned char scope);
 int sd_rtnl_message_addr_set_flags(sd_rtnl_message *m, unsigned char flags);
 int sd_rtnl_message_addr_get_family(sd_rtnl_message *m, unsigned char *family);
+int sd_rtnl_message_addr_get_prefixlen(sd_rtnl_message *m, unsigned char *prefixlen);
 int sd_rtnl_message_addr_get_scope(sd_rtnl_message *m, unsigned char *scope);
 int sd_rtnl_message_addr_get_flags(sd_rtnl_message *m, unsigned char *flags);
 int sd_rtnl_message_addr_get_ifindex(sd_rtnl_message *m, int *ifindex);