*
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#ifdef __linux__
#include <stdio.h>
return -1;
}
- if (setsockopt(rth->fd,SOL_SOCKET,SO_SNDBUF,&sndbuf,sizeof(sndbuf)) < 0) {
+ if (setsockopt(rth->fd, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof(sndbuf))
+ < 0) {
perror("SO_SNDBUF");
return -1;
}
- if (setsockopt(rth->fd,SOL_SOCKET,SO_RCVBUF,&rcvbuf,sizeof(rcvbuf)) < 0) {
+ if (setsockopt(rth->fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf))
+ < 0) {
perror("SO_RCVBUF");
return -1;
}
rth->local.nl_family = AF_NETLINK;
rth->local.nl_groups = subscriptions;
- if (bind(rth->fd, (struct sockaddr*)&rth->local, sizeof(rth->local)) < 0) {
+ if (bind(rth->fd, (struct sockaddr *)&rth->local, sizeof(rth->local))
+ < 0) {
perror("Cannot bind netlink socket");
return -1;
}
addr_len = sizeof(rth->local);
- if (getsockname(rth->fd, (struct sockaddr*)&rth->local, &addr_len) < 0) {
+ if (getsockname(rth->fd, (struct sockaddr *)&rth->local, &addr_len)
+ < 0) {
perror("Cannot getsockname");
return -1;
}
return -1;
}
if (rth->local.nl_family != AF_NETLINK) {
- fprintf(stderr, "Wrong address family %d\n", rth->local.nl_family);
+ fprintf(stderr, "Wrong address family %d\n",
+ rth->local.nl_family);
return -1;
}
rth->seq = time(NULL);
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_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
req.nlh.nlmsg_pid = 0;
req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
req.g.rtgen_family = family;
- return send(rth->fd, (void*)&req, sizeof(req), 0);
+ return send(rth->fd, (void *)&req, sizeof(req), 0);
}
int rtnl_send(struct rtnl_handle *rth, const char *buf, int len)
return status;
/* Check for immediate errors */
- status = recv(rth->fd, resp, sizeof(resp), MSG_DONTWAIT|MSG_PEEK);
+ status = recv(rth->fd, resp, sizeof(resp), MSG_DONTWAIT | MSG_PEEK);
if (status < 0) {
if (errno == EAGAIN)
return 0;
for (h = (struct nlmsghdr *)resp; NLMSG_OK(h, (uint32_t)status);
h = NLMSG_NEXT(h, status)) {
if (h->nlmsg_type == NLMSG_ERROR) {
- struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
- if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr)))
+ struct nlmsgerr *err = (struct nlmsgerr *)NLMSG_DATA(h);
+ if (h->nlmsg_len
+ < NLMSG_LENGTH(sizeof(struct nlmsgerr)))
fprintf(stderr, "ERROR truncated\n");
else
errno = -err->error;
{
struct nlmsghdr nlh;
struct sockaddr_nl nladdr;
- struct iovec iov[2] = {
- { .iov_base = &nlh, .iov_len = sizeof(nlh) },
- { .iov_base = req, .iov_len = len }
- };
+ struct iovec iov[2] = {{.iov_base = &nlh, .iov_len = sizeof(nlh)},
+ {.iov_base = req, .iov_len = len}};
struct msghdr msg = {
.msg_name = &nladdr,
- .msg_namelen = sizeof(nladdr),
+ .msg_namelen = sizeof(nladdr),
.msg_iov = iov,
.msg_iovlen = 2,
};
nlh.nlmsg_len = NLMSG_LENGTH(len);
nlh.nlmsg_type = type;
- nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
+ nlh.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST;
nlh.nlmsg_pid = 0;
nlh.nlmsg_seq = rth->dump = ++rth->seq;
}
for (a = arg; a->filter; a++) {
- struct nlmsghdr *h = (struct nlmsghdr*)buf;
+ struct nlmsghdr *h = (struct nlmsghdr *)buf;
msglen = status;
while (NLMSG_OK(h, (uint32_t)msglen)) {
int err;
- if (nladdr.nl_pid != 0 ||
- h->nlmsg_pid != rth->local.nl_pid ||
- h->nlmsg_seq != rth->dump) {
+ if (nladdr.nl_pid != 0
+ || h->nlmsg_pid != rth->local.nl_pid
+ || h->nlmsg_seq != rth->dump) {
if (a->junk) {
err = a->junk(&nladdr, h,
a->arg2);
break; /* process next filter */
}
if (h->nlmsg_type == NLMSG_ERROR) {
- struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
- if (h->nlmsg_len < NLMSG_LENGTH(sizeof(struct nlmsgerr))) {
+ struct nlmsgerr *merr =
+ (struct nlmsgerr *)NLMSG_DATA(
+ h);
+ if (h->nlmsg_len
+ < NLMSG_LENGTH(sizeof(
+ struct nlmsgerr))) {
fprintf(stderr,
"ERROR truncated\n");
} else {
- errno = -err->error;
+ errno = -merr->error;
perror("RTNETLINK answers");
}
return -1;
if (err < 0)
return err;
-skip_it:
+ skip_it:
h = NLMSG_NEXT(h, msglen);
}
}
}
}
-int rtnl_dump_filter(struct rtnl_handle *rth,
- rtnl_filter_t filter,
- void *arg1,
- rtnl_filter_t junk,
- void *arg2)
+int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter, void *arg1,
+ rtnl_filter_t junk, void *arg2)
{
const struct rtnl_dump_filter_arg a[2] = {
- { .filter = filter, .arg1 = arg1, .junk = junk, .arg2 = arg2 },
- { .filter = NULL, .arg1 = NULL, .junk = NULL, .arg2 = NULL }
- };
+ {.filter = filter, .arg1 = arg1, .junk = junk, .arg2 = arg2},
+ {.filter = NULL, .arg1 = NULL, .junk = NULL, .arg2 = NULL}};
return rtnl_dump_filter_l(rth, a);
}
int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
- unsigned groups, struct nlmsghdr *answer,
- rtnl_filter_t junk,
+ unsigned groups, struct nlmsghdr *answer, rtnl_filter_t junk,
void *jarg)
{
int status;
unsigned seq;
struct nlmsghdr *h;
struct sockaddr_nl nladdr;
- struct iovec iov = {
- .iov_base = (void*) n,
- .iov_len = n->nlmsg_len
- };
+ struct iovec iov = {.iov_base = (void *)n, .iov_len = n->nlmsg_len};
struct msghdr msg = {
.msg_name = &nladdr,
.msg_namelen = sizeof(nladdr),
.msg_iov = &iov,
.msg_iovlen = 1,
};
- char buf[16384];
+ char buf[16384];
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
return -1;
}
- memset(buf,0,sizeof(buf));
+ memset(buf, 0, sizeof(buf));
iov.iov_base = buf;
return -1;
}
if (msg.msg_namelen != sizeof(nladdr)) {
- fprintf(stderr, "sender address length == %d\n", msg.msg_namelen);
+ fprintf(stderr, "sender address length == %d\n",
+ msg.msg_namelen);
exit(1);
}
- for (h = (struct nlmsghdr*)buf; status >= (int)sizeof(*h); ) {
+ for (h = (struct nlmsghdr *)buf; status >= (int)sizeof(*h);) {
int err;
int len = h->nlmsg_len;
int l = len - sizeof(*h);
- if (l<0 || len>status) {
+ if (l < 0 || len > status) {
if (msg.msg_flags & MSG_TRUNC) {
fprintf(stderr, "Truncated message\n");
return -1;
}
- fprintf(stderr, "!!!malformed message: len=%d\n", len);
+ fprintf(stderr,
+ "!!!malformed message: len=%d\n", len);
exit(1);
}
- if ((int)nladdr.nl_pid != peer ||
- h->nlmsg_pid != rtnl->local.nl_pid ||
- h->nlmsg_seq != seq) {
+ if ((int)nladdr.nl_pid != peer
+ || h->nlmsg_pid != rtnl->local.nl_pid
+ || h->nlmsg_seq != seq) {
if (junk) {
err = junk(&nladdr, h, jarg);
if (err < 0)
}
/* Don't forget to skip that message. */
status -= NLMSG_ALIGN(len);
- h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
+ h = (struct nlmsghdr *)((char *)h
+ + NLMSG_ALIGN(len));
continue;
}
if (h->nlmsg_type == NLMSG_ERROR) {
- struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
+ struct nlmsgerr *merr =
+ (struct nlmsgerr *)NLMSG_DATA(h);
if (l < (int)sizeof(struct nlmsgerr)) {
fprintf(stderr, "ERROR truncated\n");
} else {
- errno = -err->error;
+ errno = -merr->error;
if (errno == 0) {
if (answer)
- memcpy(answer, h, h->nlmsg_len);
+ memcpy(answer, h,
+ h->nlmsg_len);
return 0;
}
perror("RTNETLINK answers");
fprintf(stderr, "Unexpected reply!!!\n");
status -= NLMSG_ALIGN(len);
- h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
+ h = (struct nlmsghdr *)((char *)h + NLMSG_ALIGN(len));
}
if (msg.msg_flags & MSG_TRUNC) {
fprintf(stderr, "Message truncated\n");
}
}
-int rtnl_listen(struct rtnl_handle *rtnl,
- rtnl_filter_t handler,
- void *jarg)
+int rtnl_listen(struct rtnl_handle *rtnl, rtnl_filter_t handler, void *jarg)
{
int status;
struct nlmsghdr *h;
.msg_iov = &iov,
.msg_iovlen = 1,
};
- char buf[8192];
+ char buf[8192];
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
return -1;
}
if (msg.msg_namelen != sizeof(nladdr)) {
- fprintf(stderr, "Sender address length == %d\n", msg.msg_namelen);
+ fprintf(stderr, "Sender address length == %d\n",
+ msg.msg_namelen);
exit(1);
}
- for (h =(struct nlmsghdr*)buf; status >= (int)sizeof(*h); ) {
+ for (h = (struct nlmsghdr *)buf; status >= (int)sizeof(*h);) {
int err;
int len = h->nlmsg_len;
int l = len - sizeof(*h);
- if (l<0 || len>status) {
+ if (l < 0 || len > status) {
if (msg.msg_flags & MSG_TRUNC) {
fprintf(stderr, "Truncated message\n");
return -1;
}
- fprintf(stderr, "!!!malformed message: len=%d\n", len);
+ fprintf(stderr,
+ "!!!malformed message: len=%d\n", len);
exit(1);
}
return err;
status -= NLMSG_ALIGN(len);
- h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
+ h = (struct nlmsghdr *)((char *)h + NLMSG_ALIGN(len));
}
if (msg.msg_flags & MSG_TRUNC) {
fprintf(stderr, "Message truncated\n");
}
}
-int rtnl_from_file(FILE *rtnl, rtnl_filter_t handler,
- void *jarg)
+int rtnl_from_file(FILE *rtnl, rtnl_filter_t handler, void *jarg)
{
- int status;
struct sockaddr_nl nladdr;
- char buf[8192];
- struct nlmsghdr *h = (void*)buf;
+ char buf[8192];
+ struct nlmsghdr *h = (void *)buf;
memset(&nladdr, 0, sizeof(nladdr));
nladdr.nl_family = AF_NETLINK;
nladdr.nl_groups = 0;
while (1) {
- int err, len;
- int l;
+ int err;
+ size_t l, rl, arl;
- status = fread(&buf, 1, sizeof(*h), rtnl);
+ rl = sizeof(*h);
+ arl = fread(&buf, 1, rl, rtnl);
- if (status < 0) {
- if (errno == EINTR)
- continue;
- perror("rtnl_from_file: fread");
+ if (arl != rl) {
+ if (arl == 0)
+ return 0;
+
+ if (ferror(rtnl))
+ fprintf(stderr, "%s: header read failed\n",
+ __func__);
+ else
+ fprintf(stderr, "%s: truncated header\n",
+ __func__);
return -1;
}
- if (status == 0)
- return 0;
- len = h->nlmsg_len;
- l = len - sizeof(*h);
+ l = h->nlmsg_len > rl ? h->nlmsg_len - rl : 0;
- if (l<0 || len>(int)sizeof(buf)) {
- fprintf(stderr, "!!!malformed message: len=%d @%lu\n",
- len, ftell(rtnl));
+ if (l == 0 || (l + (size_t)NLMSG_HDRLEN) > sizeof(buf)) {
+ fprintf(stderr, "%s: malformed message: len=%zu @%lu\n",
+ __func__, (size_t)h->nlmsg_len, ftell(rtnl));
return -1;
}
- status = fread(NLMSG_DATA(h), 1, NLMSG_ALIGN(l), rtnl);
+ rl = NLMSG_ALIGN(l);
+ arl = fread(NLMSG_DATA(h), 1, rl, rtnl);
- if (status < 0) {
- perror("rtnl_from_file: fread");
- return -1;
- }
- if (status < l) {
- fprintf(stderr, "rtnl-from_file: truncated message\n");
+ if (arl != rl) {
+ if (ferror(rtnl))
+ fprintf(stderr, "%s: msg read failed\n",
+ __func__);
+ else
+ fprintf(stderr, "%s: truncated message\n",
+ __func__);
return -1;
}
int len = RTA_LENGTH(4);
struct rtattr *rta;
if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen) {
- fprintf(stderr,"addattr32: Error! max allowed bound %d exceeded\n",maxlen);
+ fprintf(stderr,
+ "addattr32: Error! max allowed bound %d exceeded\n",
+ maxlen);
return -1;
}
rta = NLMSG_TAIL(n);
struct rtattr *rta;
if ((int)(NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len)) > maxlen) {
- fprintf(stderr, "addattr_l ERROR: message exceeded bound of %d\n",maxlen);
+ fprintf(stderr,
+ "addattr_l ERROR: message exceeded bound of %d\n",
+ maxlen);
return -1;
}
rta = NLMSG_TAIL(n);
int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len)
{
if ((int)(NLMSG_ALIGN(n->nlmsg_len) + NLMSG_ALIGN(len)) > maxlen) {
- fprintf(stderr, "addraw_l ERROR: message exceeded bound of %d\n",maxlen);
+ fprintf(stderr,
+ "addraw_l ERROR: message exceeded bound of %d\n",
+ maxlen);
return -1;
}
memcpy(NLMSG_TAIL(n), data, len);
- memset((uint8_t *) NLMSG_TAIL(n) + len, 0, NLMSG_ALIGN(len) - len);
+ memset((uint8_t *)NLMSG_TAIL(n) + len, 0, NLMSG_ALIGN(len) - len);
n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + NLMSG_ALIGN(len);
return 0;
}
struct rtattr *subrta;
if ((int)(RTA_ALIGN(rta->rta_len) + len) > maxlen) {
- fprintf(stderr,"rta_addattr32: Error! max allowed bound %d exceeded\n",maxlen);
+ fprintf(stderr,
+ "rta_addattr32: Error! max allowed bound %d exceeded\n",
+ maxlen);
return -1;
}
- subrta = (struct rtattr*)(((char*)rta) + RTA_ALIGN(rta->rta_len));
+ subrta = (struct rtattr *)(((char *)rta) + RTA_ALIGN(rta->rta_len));
subrta->rta_type = type;
subrta->rta_len = len;
memcpy(RTA_DATA(subrta), &data, 4);
return 0;
}
-int rta_addattr_l(struct rtattr *rta, int maxlen, int type,
- const void *data, int alen)
+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 ((int)(RTA_ALIGN(rta->rta_len) + RTA_ALIGN(len)) > maxlen) {
- fprintf(stderr,"rta_addattr_l: Error! max allowed bound %d exceeded\n",maxlen);
+ fprintf(stderr,
+ "rta_addattr_l: Error! max allowed bound %d exceeded\n",
+ maxlen);
return -1;
}
- subrta = (struct rtattr*)(((char*)rta) + RTA_ALIGN(rta->rta_len));
+ subrta = (struct rtattr *)(((char *)rta) + RTA_ALIGN(rta->rta_len));
subrta->rta_type = type;
subrta->rta_len = len;
memcpy(RTA_DATA(subrta), data, alen);
while (RTA_OK(rta, len)) {
if ((rta->rta_type <= max) && (!tb[rta->rta_type]))
tb[rta->rta_type] = rta;
- rta = RTA_NEXT(rta,len);
+ rta = RTA_NEXT(rta, len);
}
if (len)
- fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len, rta->rta_len);
+ fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len,
+ rta->rta_len);
return 0;
}
-int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta, int len)
+int parse_rtattr_byindex(struct rtattr *tb[], int max, struct rtattr *rta,
+ int len)
{
int i = 0;
while (RTA_OK(rta, len)) {
if (rta->rta_type <= max && i < max)
tb[i++] = rta;
- rta = RTA_NEXT(rta,len);
+ rta = RTA_NEXT(rta, len);
}
if (len)
- fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len, rta->rta_len);
+ fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len,
+ rta->rta_len);
return i;
}
-int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta,
- int len)
+int __parse_rtattr_nested_compat(struct rtattr *tb[], int max,
+ struct rtattr *rta, int len)
{
if ((int)RTA_PAYLOAD(rta) < len)
return -1;
if (RTA_PAYLOAD(rta) >= RTA_ALIGN(len) + sizeof(struct rtattr)) {
- rta = (struct rtattr *)(uint8_t *)RTA_DATA(rta)+RTA_ALIGN(len);
+ rta = (struct rtattr *)(uint8_t *)RTA_DATA(rta)
+ + RTA_ALIGN(len);
return parse_rtattr_nested(tb, max, rta);
}
memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
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