diff options
Diffstat (limited to 'src/libsystemd')
| -rw-r--r-- | src/libsystemd/sd-rtnl/rtnl-message.c | 75 |
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)); |