/* vi: set sw=4 ts=4: */
/*
- * libnetlink.c RTnetlink service routines.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
*
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*/
#include <sys/socket.h>
#include "libbb.h"
#include "libnetlink.h"
-void rtnl_close(struct rtnl_handle *rth)
-{
- close(rth->fd);
-}
-
-int xrtnl_open(struct rtnl_handle *rth/*, unsigned subscriptions*/)
+void FAST_FUNC xrtnl_open(struct rtnl_handle *rth/*, unsigned subscriptions*/)
{
socklen_t addr_len;
- memset(rth, 0, sizeof(rth));
-
+ memset(rth, 0, sizeof(*rth));
rth->fd = xsocket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
-
- memset(&rth->local, 0, sizeof(rth->local));
rth->local.nl_family = AF_NETLINK;
/*rth->local.nl_groups = subscriptions;*/
xbind(rth->fd, (struct sockaddr*)&rth->local, sizeof(rth->local));
addr_len = sizeof(rth->local);
+ getsockname(rth->fd, (struct sockaddr*)&rth->local, &addr_len);
+
+/* too much paranoia
if (getsockname(rth->fd, (struct sockaddr*)&rth->local, &addr_len) < 0)
- bb_perror_msg_and_die("cannot getsockname");
+ bb_perror_msg_and_die("getsockname");
if (addr_len != sizeof(rth->local))
bb_error_msg_and_die("wrong address length %d", addr_len);
if (rth->local.nl_family != AF_NETLINK)
bb_error_msg_and_die("wrong address family %d", rth->local.nl_family);
+*/
rth->seq = time(NULL);
- return 0;
}
-int xrtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
+int FAST_FUNC xrtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
{
struct {
struct nlmsghdr nlh;
struct rtgenmsg g;
} req;
- struct sockaddr_nl nladdr;
-
- memset(&nladdr, 0, sizeof(nladdr));
- nladdr.nl_family = AF_NETLINK;
req.nlh.nlmsg_len = sizeof(req);
req.nlh.nlmsg_type = type;
req.nlh.nlmsg_seq = rth->dump = ++rth->seq;
req.g.rtgen_family = family;
- return xsendto(rth->fd, (void*)&req, sizeof(req),
- (struct sockaddr*)&nladdr, sizeof(nladdr));
+ return rtnl_send(rth, (void*)&req, sizeof(req));
}
-int rtnl_send(struct rtnl_handle *rth, char *buf, int len)
+//TODO: pass rth->fd instead of full rth?
+int FAST_FUNC rtnl_send(struct rtnl_handle *rth, char *buf, int len)
{
struct sockaddr_nl nladdr;
return xsendto(rth->fd, buf, len, (struct sockaddr*)&nladdr, sizeof(nladdr));
}
-int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len)
+int FAST_FUNC rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len)
{
struct nlmsghdr nlh;
struct sockaddr_nl nladdr;
struct iovec iov[2] = { { &nlh, sizeof(nlh) }, { req, len } };
struct msghdr msg = {
(void*)&nladdr, sizeof(nladdr),
- iov, 2,
- NULL, 0,
+ iov, 2,
+ NULL, 0,
0
};
}
static int rtnl_dump_filter(struct rtnl_handle *rth,
- int (*filter)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
+ int (*filter)(const struct sockaddr_nl *, struct nlmsghdr *n, void *) FAST_FUNC,
void *arg1/*,
int (*junk)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
void *arg2*/)
struct msghdr msg = {
(void*)&nladdr, sizeof(nladdr),
- &iov, 1,
- NULL, 0,
+ &iov, 1,
+ NULL, 0,
0
};
if (nladdr.nl_pid != 0 ||
h->nlmsg_pid != rth->local.nl_pid ||
- h->nlmsg_seq != rth->dump) {
+ h->nlmsg_seq != rth->dump
+ ) {
// if (junk) {
// err = junk(&nladdr, h, arg2);
// if (err < 0) {
return retval;
}
-int xrtnl_dump_filter(struct rtnl_handle *rth,
- int (*filter)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
+int FAST_FUNC xrtnl_dump_filter(struct rtnl_handle *rth,
+ int (*filter)(const struct sockaddr_nl *, struct nlmsghdr *, void *) FAST_FUNC,
void *arg1)
{
int ret = rtnl_dump_filter(rth, filter, arg1/*, NULL, NULL*/);
return ret;
}
-int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n,
- pid_t peer, unsigned groups,
- struct nlmsghdr *answer,
- int (*junk)(struct sockaddr_nl *, struct nlmsghdr *n, void *),
- void *jarg)
+int FAST_FUNC rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n,
+ pid_t peer, unsigned groups,
+ struct nlmsghdr *answer,
+ int (*junk)(struct sockaddr_nl *, struct nlmsghdr *, void *),
+ void *jarg)
{
/* bbox doesn't use parameters no. 3, 4, 6, 7, they are stubbed out */
#define peer 0
char *buf = xmalloc(8*1024); /* avoid big stack buffer */
struct msghdr msg = {
(void*)&nladdr, sizeof(nladdr),
- &iov, 1,
- NULL, 0,
+ &iov, 1,
+ NULL, 0,
0
};
status = sendmsg(rtnl->fd, &msg, 0);
if (status < 0) {
- bb_perror_msg("cannot talk to rtnetlink");
+ bb_perror_msg("can't talk to rtnetlink");
goto ret;
}
if (msg.msg_namelen != sizeof(nladdr)) {
bb_error_msg_and_die("sender address length == %d", msg.msg_namelen);
}
- for (h = (struct nlmsghdr*)buf; status >= sizeof(*h); ) {
+ for (h = (struct nlmsghdr*)buf; status >= (int)sizeof(*h); ) {
// int l_err;
int len = h->nlmsg_len;
int l = len - sizeof(*h);
if (nladdr.nl_pid != peer ||
h->nlmsg_pid != rtnl->local.nl_pid ||
- h->nlmsg_seq != seq) {
+ h->nlmsg_seq != seq
+ ) {
// if (junk) {
// l_err = junk(&nladdr, h, jarg);
// if (l_err < 0) {
if (h->nlmsg_type == NLMSG_ERROR) {
struct nlmsgerr *err = (struct nlmsgerr*)NLMSG_DATA(h);
- if (l < sizeof(struct nlmsgerr)) {
+ if (l < (int)sizeof(struct nlmsgerr)) {
bb_error_msg("ERROR truncated");
} else {
errno = - err->error;
return retval;
}
-int addattr32(struct nlmsghdr *n, int maxlen, int type, uint32_t data)
+int FAST_FUNC addattr32(struct nlmsghdr *n, int maxlen, int type, uint32_t data)
{
int len = RTA_LENGTH(4);
struct rtattr *rta;
- if (NLMSG_ALIGN(n->nlmsg_len) + len > maxlen)
+
+ if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen) {
return -1;
+ }
rta = (struct rtattr*)(((char*)n) + NLMSG_ALIGN(n->nlmsg_len));
rta->rta_type = type;
rta->rta_len = len;
- memcpy(RTA_DATA(rta), &data, 4);
+ move_to_unaligned32(RTA_DATA(rta), data);
n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
return 0;
}
-int addattr_l(struct nlmsghdr *n, int maxlen, int type, void *data, int alen)
+int FAST_FUNC addattr_l(struct nlmsghdr *n, int maxlen, int type, void *data, int alen)
{
int len = RTA_LENGTH(alen);
struct rtattr *rta;
- if (NLMSG_ALIGN(n->nlmsg_len) + len > maxlen)
+ if ((int)(NLMSG_ALIGN(n->nlmsg_len) + len) > maxlen) {
return -1;
+ }
rta = (struct rtattr*)(((char*)n) + NLMSG_ALIGN(n->nlmsg_len));
rta->rta_type = type;
rta->rta_len = len;
return 0;
}
-int rta_addattr32(struct rtattr *rta, int maxlen, int type, uint32_t data)
+int FAST_FUNC rta_addattr32(struct rtattr *rta, int maxlen, int type, uint32_t data)
{
int len = RTA_LENGTH(4);
struct rtattr *subrta;
subrta = (struct rtattr*)(((char*)rta) + RTA_ALIGN(rta->rta_len));
subrta->rta_type = type;
subrta->rta_len = len;
- memcpy(RTA_DATA(subrta), &data, 4);
+ move_to_unaligned32(RTA_DATA(subrta), data);
rta->rta_len = NLMSG_ALIGN(rta->rta_len) + len;
return 0;
}
-int rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen)
+int FAST_FUNC rta_addattr_l(struct rtattr *rta, int maxlen, int type, void *data, int alen)
{
struct rtattr *subrta;
int len = RTA_LENGTH(alen);
}
-int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len)
+void FAST_FUNC parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len)
{
while (RTA_OK(rta, len)) {
if (rta->rta_type <= max) {
tb[rta->rta_type] = rta;
}
- rta = RTA_NEXT(rta,len);
+ rta = RTA_NEXT(rta, len);
}
if (len) {
bb_error_msg("deficit %d, rta_len=%d!", len, rta->rta_len);
}
- return 0;
}
projects / oweals / busybox.git / blobdiff