X-Git-Url: http://git.onelab.eu/?p=iproute2.git;a=blobdiff_plain;f=lib%2Flibnetlink.c;fp=lib%2Flibnetlink.c;h=0000000000000000000000000000000000000000;hp=67951fe7d768398bee7d7c283e90e96d2b7f7ce5;hb=3331a68859fd71047bb1f309048960b48eab2d83;hpb=2bd4a72f2100be7ad7d9518cb1d49bb2a5b71994

diff --git a/lib/libnetlink.c b/lib/libnetlink.c
deleted file mode 100644
index 67951fe..0000000
--- a/lib/libnetlink.c
+++ /dev/null
@@ -1,588 +0,0 @@
-/*
- * 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>
- *
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <syslog.h>
-#include <fcntl.h>
-#include <net/if_arp.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <string.h>
-#include <errno.h>
-#include <time.h>
-#include <sys/uio.h>
-
-#include "libnetlink.h"
-
-void rtnl_close(struct rtnl_handle *rth)
-{
-	close(rth->fd);
-}
-
-int rtnl_open_byproto(struct rtnl_handle *rth, unsigned subscriptions,
-		      int protocol)
-{
-	socklen_t addr_len;
-	int sndbuf = 32768;
-	int rcvbuf = 32768;
-
-	memset(rth, 0, sizeof(rth));
-
-	rth->fd = socket(AF_NETLINK, SOCK_RAW, protocol);
-	if (rth->fd < 0) {
-		perror("Cannot open netlink socket");
-		return -1;
-	}
-
-	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) {
-		perror("SO_RCVBUF");
-		return -1;
-	}
-
-	memset(&rth->local, 0, sizeof(rth->local));
-	rth->local.nl_family = AF_NETLINK;
-	rth->local.nl_groups = subscriptions;
-
-	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) {
-		perror("Cannot getsockname");
-		return -1;
-	}
-	if (addr_len != sizeof(rth->local)) {
-		fprintf(stderr, "Wrong address length %d\n", addr_len);
-		return -1;
-	}
-	if (rth->local.nl_family != AF_NETLINK) {
-		fprintf(stderr, "Wrong address family %d\n", rth->local.nl_family);
-		return -1;
-	}
-	rth->seq = time(NULL);
-	return 0;
-}
-
-int rtnl_open(struct rtnl_handle *rth, unsigned subscriptions)
-{
-	return rtnl_open_byproto(rth, subscriptions, NETLINK_ROUTE);
-}
-
-int rtnl_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;
-
-	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_pid = 0;
-	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));
-}
-
-int rtnl_send(struct rtnl_handle *rth, const char *buf, int len)
-{
-	struct sockaddr_nl nladdr;
-
-	memset(&nladdr, 0, sizeof(nladdr));
-	nladdr.nl_family = AF_NETLINK;
-
-	return sendto(rth->fd, buf, len, 0, (struct sockaddr*)&nladdr, sizeof(nladdr));
-}
-
-int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len)
-{
-	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 msghdr msg = {
-		.msg_name = &nladdr,
-		.msg_namelen = 	sizeof(nladdr),
-		.msg_iov = iov,
-		.msg_iovlen = 2,
-	};
-
-	memset(&nladdr, 0, sizeof(nladdr));
-	nladdr.nl_family = AF_NETLINK;
-
-	nlh.nlmsg_len = NLMSG_LENGTH(len);
-	nlh.nlmsg_type = type;
-	nlh.nlmsg_flags = NLM_F_ROOT|NLM_F_MATCH|NLM_F_REQUEST;
-	nlh.nlmsg_pid = 0;
-	nlh.nlmsg_seq = rth->dump = ++rth->seq;
-
-	return sendmsg(rth->fd, &msg, 0);
-}
-
-int rtnl_dump_filter(struct rtnl_handle *rth,
-		     rtnl_filter_t filter,
-		     void *arg1,
-		     rtnl_filter_t junk,
-		     void *arg2)
-{
-	struct sockaddr_nl nladdr;
-	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;
-
-		iov.iov_len = sizeof(buf);
-		status = recvmsg(rth->fd, &msg, 0);
-
-		if (status < 0) {
-			if (errno == EINTR)
-				continue;
-			perror("OVERRUN");
-			continue;
-		}
-
-		if (status == 0) {
-			fprintf(stderr, "EOF on netlink\n");
-			return -1;
-		}
-
-		h = (struct nlmsghdr*)buf;
-		while (NLMSG_OK(h, status)) {
-			int err;
-
-			if (nladdr.nl_pid != 0 ||
-			    h->nlmsg_pid != rth->local.nl_pid ||
-			    h->nlmsg_seq != rth->dump) {
-				if (junk) {
-					err = junk(&nladdr, h, arg2);
-					if (err < 0)
-						return err;
-				}
-				goto skip_it;
-			}
-
-			if (h->nlmsg_type == NLMSG_DONE)
-				return 0;
-			if (h->nlmsg_type == NLMSG_ERROR) {
-				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;
-					perror("RTNETLINK answers");
-				}
-				return -1;
-			}
-			err = filter(&nladdr, h, arg1);
-			if (err < 0)
-				return err;
-
-skip_it:
-			h = NLMSG_NEXT(h, status);
-		}
-		if (msg.msg_flags & MSG_TRUNC) {
-			fprintf(stderr, "Message truncated\n");
-			continue;
-		}
-		if (status) {
-			fprintf(stderr, "!!!Remnant of size %d\n", status);
-			exit(1);
-		}
-	}
-}
-
-int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n, pid_t peer,
-	      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 msghdr msg = {
-		.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;
-	nladdr.nl_pid = peer;
-	nladdr.nl_groups = groups;
-
-	n->nlmsg_seq = seq = ++rtnl->seq;
-
-	if (answer == NULL)
-		n->nlmsg_flags |= NLM_F_ACK;
-
-	status = sendmsg(rtnl->fd, &msg, 0);
-
-	if (status < 0) {
-		perror("Cannot talk to rtnetlink");
-		return -1;
-	}
-
-	memset(buf,0,sizeof(buf));
-
-	iov.iov_base = buf;
-
-	while (1) {
-		iov.iov_len = sizeof(buf);
-		status = recvmsg(rtnl->fd, &msg, 0);
-
-		if (status < 0) {
-			if (errno == EINTR)
-				continue;
-			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);
-		}
-		for (h = (struct nlmsghdr*)buf; status >= sizeof(*h); ) {
-			int err;
-			int len = h->nlmsg_len;
-			int l = len - sizeof(*h);
-
-			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);
-				exit(1);
-			}
-
-			if (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)
-						return err;
-				}
-				/* Don't forget to skip that message. */
-				status -= 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);
-				if (l < sizeof(struct nlmsgerr)) {
-					fprintf(stderr, "ERROR truncated\n");
-				} else {
-					errno = -err->error;
-					if (errno == 0) {
-						if (answer)
-							memcpy(answer, h, h->nlmsg_len);
-						return 0;
-					}
-					perror("RTNETLINK answers");
-				}
-				return -1;
-			}
-			if (answer) {
-				memcpy(answer, h, h->nlmsg_len);
-				return 0;
-			}
-
-			fprintf(stderr, "Unexpected reply!!!\n");
-
-			status -= NLMSG_ALIGN(len);
-			h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
-		}
-		if (msg.msg_flags & MSG_TRUNC) {
-			fprintf(stderr, "Message truncated\n");
-			continue;
-		}
-		if (status) {
-			fprintf(stderr, "!!!Remnant of size %d\n", status);
-			exit(1);
-		}
-	}
-}
-
-int rtnl_listen(struct rtnl_handle *rtnl,
-		rtnl_filter_t handler,
-		void *jarg)
-{
-	int status;
-	struct nlmsghdr *h;
-	struct sockaddr_nl nladdr;
-	struct iovec iov;
-	struct msghdr msg = {
-		.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);
-
-		if (status < 0) {
-			if (errno == EINTR)
-				continue;
-			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);
-		}
-		for (h = (struct nlmsghdr*)buf; status >= sizeof(*h); ) {
-			int err;
-			int len = h->nlmsg_len;
-			int l = len - sizeof(*h);
-
-			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);
-				exit(1);
-			}
-
-			err = handler(&nladdr, h, jarg);
-			if (err < 0)
-				return err;
-
-			status -= NLMSG_ALIGN(len);
-			h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));
-		}
-		if (msg.msg_flags & MSG_TRUNC) {
-			fprintf(stderr, "Message truncated\n");
-			continue;
-		}
-		if (status) {
-			fprintf(stderr, "!!!Remnant of size %d\n", status);
-			exit(1);
-		}
-	}
-}
-
-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;
-
-	memset(&nladdr, 0, sizeof(nladdr));
-	nladdr.nl_family = AF_NETLINK;
-	nladdr.nl_pid = 0;
-	nladdr.nl_groups = 0;
-
-	while (1) {
-		int err, len, type;
-		int l;
-
-		status = fread(&buf, 1, sizeof(*h), rtnl);
-
-		if (status < 0) {
-			if (errno == EINTR)
-				continue;
-			perror("rtnl_from_file: fread");
-			return -1;
-		}
-		if (status == 0)
-			return 0;
-
-		len = h->nlmsg_len;
-		type= h->nlmsg_type;
-		l = len - sizeof(*h);
-
-		if (l<0 || len>sizeof(buf)) {
-			fprintf(stderr, "!!!malformed message: len=%d @%lu\n",
-				len, ftell(rtnl));
-			return -1;
-		}
-
-		status = fread(NLMSG_DATA(h), 1, NLMSG_ALIGN(l), rtnl);
-
-		if (status < 0) {
-			perror("rtnl_from_file: fread");
-			return -1;
-		}
-		if (status < l) {
-			fprintf(stderr, "rtnl-from_file: truncated message\n");
-			return -1;
-		}
-
-		err = handler(&nladdr, h, jarg);
-		if (err < 0)
-			return err;
-	}
-}
-
-int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data)
-{
-	int len = RTA_LENGTH(4);
-	struct rtattr *rta;
-	if (NLMSG_ALIGN(n->nlmsg_len) + len > maxlen) {
-		fprintf(stderr,"addattr32: Error! max allowed bound %d exceeded\n",maxlen);
-		return -1;
-	}
-	rta = NLMSG_TAIL(n);
-	rta->rta_type = type;
-	rta->rta_len = len;
-	memcpy(RTA_DATA(rta), &data, 4);
-	n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + len;
-	return 0;
-}
-
-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) + RTA_ALIGN(len) > maxlen) {
-		fprintf(stderr, "addattr_l ERROR: message exceeded bound of %d\n",maxlen);
-		return -1;
-	}
-	rta = NLMSG_TAIL(n);
-	rta->rta_type = type;
-	rta->rta_len = len;
-	memcpy(RTA_DATA(rta), data, alen);
-	n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + RTA_ALIGN(len);
-	return 0;
-}
-
-int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len)
-{
-	if (NLMSG_ALIGN(n->nlmsg_len) + NLMSG_ALIGN(len) > maxlen) {
-		fprintf(stderr, "addraw_l ERROR: message exceeded bound of %d\n",maxlen);
-		return -1;
-	}
-
-	memcpy(NLMSG_TAIL(n), data, len);
-	memset((void *) NLMSG_TAIL(n) + len, 0, NLMSG_ALIGN(len) - len);
-	n->nlmsg_len = NLMSG_ALIGN(n->nlmsg_len) + NLMSG_ALIGN(len);
-	return 0;
-}
-
-int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data)
-{
-	int len = RTA_LENGTH(4);
-	struct rtattr *subrta;
-
-	if (RTA_ALIGN(rta->rta_len) + len > 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->rta_type = type;
-	subrta->rta_len = len;
-	memcpy(RTA_DATA(subrta), &data, 4);
-	rta->rta_len = NLMSG_ALIGN(rta->rta_len) + len;
-	return 0;
-}
-
-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) + RTA_ALIGN(len) > 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->rta_type = type;
-	subrta->rta_len = len;
-	memcpy(RTA_DATA(subrta), data, alen);
-	rta->rta_len = NLMSG_ALIGN(rta->rta_len) + RTA_ALIGN(len);
-	return 0;
-}
-
-int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len)
-{
-	memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
-	while (RTA_OK(rta, len)) {
-		if (rta->rta_type <= max)
-			tb[rta->rta_type] = rta;
-		rta = RTA_NEXT(rta,len);
-	}
-	if (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 i = 0;
-
-	memset(tb, 0, sizeof(struct rtattr *) * max);
-	while (RTA_OK(rta, len)) {
-		if (rta->rta_type <= max && i < max)
-			tb[i++] = rta;
-		rta = RTA_NEXT(rta,len);
-	}
-	if (len)
-		fprintf(stderr, "!!!Deficit %d, rta_len=%d\n", len, rta->rta_len);
-	return i;
-}