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path: root/src/libsystemd/sd-rtnl/rtnl-message.c
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Diffstat (limited to 'src/libsystemd/sd-rtnl/rtnl-message.c')
-rw-r--r--src/libsystemd/sd-rtnl/rtnl-message.c75
1 files changed, 70 insertions, 5 deletions
diff --git a/src/libsystemd/sd-rtnl/rtnl-message.c b/src/libsystemd/sd-rtnl/rtnl-message.c
index d55c3673a3..d158ff7937 100644
--- a/src/libsystemd/sd-rtnl/rtnl-message.c
+++ b/src/libsystemd/sd-rtnl/rtnl-message.c
@@ -129,8 +129,16 @@ bool message_type_is_addr(uint16_t type) {
int sd_rtnl_message_route_set_dst_prefixlen(sd_rtnl_message *m, unsigned char prefixlen) {
struct rtmsg *rtm;
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(message_type_is_route(m->hdr->nlmsg_type), -EINVAL);
+
rtm = NLMSG_DATA(m->hdr);
+ if ((rtm->rtm_family == AF_INET && prefixlen > 32) ||
+ (rtm->rtm_family == AF_INET6 && prefixlen > 128))
+ return -ERANGE;
+
rtm->rtm_dst_len = prefixlen;
return 0;
@@ -170,6 +178,10 @@ int sd_rtnl_message_route_new(uint16_t nlmsg_type, unsigned char rtm_family,
int sd_rtnl_message_link_set_flags(sd_rtnl_message *m, unsigned flags, unsigned change) {
struct ifinfomsg *ifi;
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+
ifi = NLMSG_DATA(m->hdr);
ifi->ifi_flags = flags;
@@ -184,6 +196,10 @@ int sd_rtnl_message_link_set_flags(sd_rtnl_message *m, unsigned flags, unsigned
int sd_rtnl_message_link_set_type(sd_rtnl_message *m, unsigned type) {
struct ifinfomsg *ifi;
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(message_type_is_link(m->hdr->nlmsg_type), -EINVAL);
+
ifi = NLMSG_DATA(m->hdr);
ifi->ifi_type = type;
@@ -218,12 +234,60 @@ int sd_rtnl_message_link_new(uint16_t nlmsg_type, int index, sd_rtnl_message **r
return 0;
}
-int sd_rtnl_message_addr_new(uint16_t nlmsg_type, int index, unsigned char family, unsigned char prefixlen, unsigned char flags, unsigned char scope, sd_rtnl_message **ret) {
+int sd_rtnl_message_addr_set_prefixlen(sd_rtnl_message *m, unsigned char prefixlen) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ if ((ifa->ifa_family == AF_INET && prefixlen > 32) ||
+ (ifa->ifa_family == AF_INET6 && prefixlen > 128))
+ return -ERANGE;
+
+ ifa->ifa_prefixlen = prefixlen;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_set_flags(sd_rtnl_message *m, unsigned char flags) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ ifa->ifa_flags = flags;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_set_scope(sd_rtnl_message *m, unsigned char scope) {
+ struct ifaddrmsg *ifa;
+
+ assert_return(m, -EINVAL);
+ assert_return(m->hdr, -EINVAL);
+ assert_return(message_type_is_addr(m->hdr->nlmsg_type), -EINVAL);
+
+ ifa = NLMSG_DATA(m->hdr);
+
+ ifa->ifa_scope = scope;
+
+ return 0;
+}
+
+int sd_rtnl_message_addr_new(uint16_t nlmsg_type, int index, unsigned char family,
+ sd_rtnl_message **ret) {
struct ifaddrmsg *ifa;
int r;
assert_return(message_type_is_addr(nlmsg_type), -EINVAL);
assert_return(index > 0, -EINVAL);
+ assert_return(family == AF_INET || family == AF_INET6, -EINVAL);
assert_return(ret, -EINVAL);
r = message_new(ret, NLMSG_SPACE(sizeof(struct ifaddrmsg)));
@@ -235,11 +299,12 @@ int sd_rtnl_message_addr_new(uint16_t nlmsg_type, int index, unsigned char famil
ifa = NLMSG_DATA((*ret)->hdr);
- ifa->ifa_family = family;
- ifa->ifa_prefixlen = prefixlen;
- ifa->ifa_flags = flags;
- ifa->ifa_scope = scope;
ifa->ifa_index = index;
+ ifa->ifa_family = family;
+ if (family == AF_INET)
+ ifa->ifa_prefixlen = 32;
+ else if (family == AF_INET6)
+ ifa->ifa_prefixlen = 128;
UPDATE_RTA(*ret, IFA_RTA(ifa));