close(rth->fd);
}
-int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions, int protocol)
+int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions,
+ int protocol)
{
- int addr_len;
+ socklen_t addr_len;
int sndbuf = 32768;
int rcvbuf = 32768;
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
+ memset(&req, 0, sizeof(req));
req.nlh.nlmsg_len = sizeof(req);
req.nlh.nlmsg_type = type;
req.nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
req.g.rtgen_family = family;
- return sendto(rth->fd, (void*)&req, sizeof(req), 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
+ return sendto(rth->fd, (void*)&req, sizeof(req), 0,
+ (struct sockaddr*)&nladdr, sizeof(nladdr));
}
int rtnl_send(struct rtnl_handle *rth, const char *buf, int len)
{
struct nlmsghdr nlh;
struct sockaddr_nl nladdr;
- struct iovec iov[2] = { { &nlh, sizeof(nlh) }, { req, len } };
+ struct iovec iov[2] = {
+ { .iov_base = &nlh, .iov_len = sizeof(nlh) },
+ { .iov_base = req, .iov_len = len }
+ };
struct msghdr msg = {
- (void*)&nladdr, sizeof(nladdr),
- iov, 2,
- NULL, 0,
- 0
+ .msg_name = &nladdr,
+ .msg_namelen = sizeof(nladdr),
+ .msg_iov = iov,
+ .msg_iovlen = 2,
};
memset(&nladdr, 0, sizeof(nladdr));
rtnl_filter_t junk,
void *arg2)
{
- char buf[16384];
struct sockaddr_nl nladdr;
- struct iovec iov = { buf, sizeof(buf) };
+ struct iovec iov;
+ struct msghdr msg = {
+ .msg_name = &nladdr,
+ .msg_namelen = sizeof(nladdr),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ };
+ char buf[16384];
+ iov.iov_base = buf;
while (1) {
int status;
struct nlmsghdr *h;
- struct msghdr msg = {
- (void*)&nladdr, sizeof(nladdr),
- &iov, 1,
- NULL, 0,
- 0
- };
-
+ iov.iov_len = sizeof(buf);
status = recvmsg(rth->fd, &msg, 0);
if (status < 0) {
perror("OVERRUN");
continue;
}
+
if (status == 0) {
fprintf(stderr, "EOF on netlink\n");
return -1;
}
- if (msg.msg_namelen != sizeof(nladdr)) {
- fprintf(stderr, "sender address length == %d\n", msg.msg_namelen);
- exit(1);
- }
h = (struct nlmsghdr*)buf;
while (NLMSG_OK(h, status)) {
unsigned seq;
struct nlmsghdr *h;
struct sockaddr_nl nladdr;
- struct iovec iov = { (void*)n, n->nlmsg_len };
- char buf[16384];
+ struct iovec iov = {
+ .iov_base = (void*) n,
+ .iov_len = n->nlmsg_len
+ };
struct msghdr msg = {
- (void*)&nladdr, sizeof(nladdr),
- &iov, 1,
- NULL, 0,
- 0
+ .msg_name = &nladdr,
+ .msg_namelen = sizeof(nladdr),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
};
+ char buf[16384];
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
if (err < 0)
return err;
}
+ /* Don't forget to skip that message. */
+ status -= NLMSG_ALIGN(len);
+ h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
continue;
}
}
}
-int rtnl_listen(struct rtnl_handle *rtnl,
+int rtnl_listen(struct rtnl_handle *rtnl,
rtnl_filter_t handler,
void *jarg)
{
struct nlmsghdr *h;
struct sockaddr_nl nladdr;
struct iovec iov;
- char buf[8192];
struct msghdr msg = {
- (void*)&nladdr, sizeof(nladdr),
- &iov, 1,
- NULL, 0,
- 0
+ .msg_name = &nladdr,
+ .msg_namelen = sizeof(nladdr),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
};
+ char buf[8192];
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
nladdr.nl_pid = 0;
nladdr.nl_groups = 0;
-
iov.iov_base = buf;
-
while (1) {
iov.iov_len = sizeof(buf);
status = recvmsg(rtnl->fd, &msg, 0);
return 0;
}
-int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
+int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data,
int alen)
{
int len = RTA_LENGTH(alen);
struct rtattr *rta;
- if (NLMSG_ALIGN(n->nlmsg_len) + len > maxlen) {
+ if (NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len) > maxlen) {
fprintf(stderr, "addattr_l ERROR: message exceeded bound of %d\n",maxlen);
return -1;
}
rta->rta_type = type;
rta->rta_len = len;
memcpy(RTA_DATA(rta), data, alen);
- n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
+ n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len);
return 0;
}
return 0;
}
-int rta_addattr_l(struct rtattr *rta, int maxlen, int type,
+int rta_addattr_l(struct rtattr *rta, int maxlen, int type,
const void *data, int alen)
{
struct rtattr *subrta;
int len = RTA_LENGTH(alen);
- if (RTA_ALIGN(rta->rta_len) + len > maxlen) {
+ if (RTA_ALIGN(rta->rta_len) + RTA_ALIGN(len) > maxlen) {
fprintf(stderr,"rta_addattr_l: Error! max allowed bound %d exceeded\n",maxlen);
return -1;
}
subrta->rta_type = type;
subrta->rta_len = len;
memcpy(RTA_DATA(subrta), data, alen);
- rta->rta_len = NLMSG_ALIGN(rta->rta_len) + len;
+ rta->rta_len = NLMSG_ALIGN(rta->rta_len) + RTA_ALIGN(len);
return 0;
}