diff options
Diffstat (limited to 'src/ra.c')
-rw-r--r-- | src/ra.c | 12 |
1 files changed, 11 insertions, 1 deletions
@@ -59,13 +59,23 @@ int ra_init(const char *ifname, const struct in6_addr *ifid) { const pid_t ourpid = getpid(); sock = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6); + if (sock < 0) + return -1; + if_index = if_nametoindex(ifname); + if (!if_index) + return -1; + strncpy(if_name, ifname, sizeof(if_name) - 1); lladdr = *ifid; rtnl = socket(AF_NETLINK, SOCK_DGRAM | SOCK_CLOEXEC, NETLINK_ROUTE); + if (rtnl < 0) + return -1; + struct sockaddr_nl rtnl_kernel = { .nl_family = AF_NETLINK }; - connect(rtnl, (const struct sockaddr*)&rtnl_kernel, sizeof(rtnl_kernel)); + if (connect(rtnl, (const struct sockaddr*)&rtnl_kernel, sizeof(rtnl_kernel)) < 0) + return -1; int val = RTNLGRP_LINK; setsockopt(rtnl, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &val, sizeof(val)); |