+/*
+ * $Id$
+ * Copyright (c) 2007 The Trustees of Princeton University
+ * Author: Daniel Hokka Zakrisson <daniel@hozac.com>
+ *
+ * Licensed under the terms of the GNU General Public License
+ * version 2 or later.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <dirent.h>
#include <ctype.h>
#include <errno.h>
+#include <signal.h>
+#include <syslog.h>
#include <asm/types.h>
-#include <linux/netlink.h>
-#include <linux/rtnetlink.h>
-/*XXX #include <linux/ipv6.h>*/
-struct in6_ifreq {
- struct in6_addr ifr6_addr;
- __u32 ifr6_prefixlen;
- int ifr6_ifindex;
-};
+#include <netlink/netlink.h>
+#include <netlink/route/addr.h>
-typedef unsigned int nid_t;
-typedef unsigned int xid_t;
#include <vserver.h>
+#include "pathconfig.h"
#define HAS_ADDRESS 0x01
#define HAS_PREFIX 0x02
-struct prefix_list {
- struct prefix_list *prev;
- struct prefix_list *next;
+
+struct nid_list {
+ nid_t nid;
+ struct nid_list *next;
+};
+struct prefix {
uint32_t mask;
int ifindex;
struct {
time_t valid_until;
} address;
};
+struct nid_prefix_map {
+ struct {
+ struct nid_prefix_map *prev;
+ struct nid_prefix_map *next;
+ } n;
+ struct {
+ struct nid_prefix_map *prev;
+ struct nid_prefix_map *next;
+ } p;
+ struct prefix *prefix;
+ nid_t nid;
+};
+
+struct nl_handle *handle;
/* from linux/include/net/ipv6.h */
static inline int ipv6_prefix_equal(struct in6_addr *prefix,
return 1;
}
-static int add_address_to_interface(int ifindex, struct in6_addr *address, int prefix)
+static int add_address_to_interface(int ifindex, struct in6_addr *address,
+ int prefix)
{
- struct in6_ifreq ireq;
- int sock;
+ int err = -1;
+ struct rtnl_addr *rta;
+ struct nl_addr *nl;
+
+ nl = nl_addr_build(AF_INET6, address, sizeof(struct in6_addr));
+ rta = rtnl_addr_alloc();
+
+ rtnl_addr_set_family(rta, AF_INET6);
+ rtnl_addr_set_ifindex(rta, ifindex);
+ rtnl_addr_set_local(rta, nl);
+ rtnl_addr_set_prefixlen(rta, prefix);
- ireq.ifr6_ifindex = ifindex;
- ireq.ifr6_prefixlen = prefix;
- memcpy(&ireq.ifr6_addr, address, sizeof(*address));
+ if (rtnl_addr_add(handle, rta, NLM_F_REPLACE) != -1 || errno == EEXIST)
+ err = 0;
+
+ rtnl_addr_free(rta);
+ nl_addr_destroy(nl);
+ return err;
+}
- /* XXX should use netlink */
- sock = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
- if (sock == -1)
+static inline int remove_address_from_interface(struct nid_prefix_map *entry)
+{
+ struct rtnl_addr *rta;
+ struct nl_addr *nl;
+ struct in6_addr a;
+ int ret;
+
+ memcpy(&a, &entry->prefix->address.addr, sizeof(a));
+ if (entry->nid != 0) {
+ a.s6_addr[11] = (entry->nid & 0x7f80) >> 7;
+ a.s6_addr[12] = (entry->nid & 0x7f) << 1;
+ }
+
+ nl = nl_addr_build(AF_INET6, &a, sizeof(a));
+ if (!nl)
+ return -1;
+ rta = rtnl_addr_alloc();
+ if (!rta)
return -1;
- if (ioctl(sock, SIOCSIFADDR, &ireq) == -1 && errno != EEXIST) {
- close(sock);
+ rtnl_addr_set_family(rta, AF_INET6);
+ rtnl_addr_set_ifindex(rta, entry->prefix->ifindex);
+ rtnl_addr_set_local(rta, nl);
+ rtnl_addr_set_prefixlen(rta, entry->prefix->address.prefix_len);
+
+ ret = rtnl_addr_delete(handle, rta, 0);
+
+ rtnl_addr_free(rta);
+ nl_addr_destroy(nl);
+
+ return ret;
+}
+
+static int add_to_map(struct nid_prefix_map *map, struct nid_prefix_map *new)
+{
+ struct nid_prefix_map *i;
+#define PUT_IT_IN_PLACE(node, member, om) \
+ /* find the correct location in the list */ \
+ for (i = map->node.next; i->node.next && i->member < \
+ new->member; i = i->node.next) \
+ ; \
+ if (i && i->member == new->member && i->om == new->om) \
+ return 0; \
+ /* first in the list */ \
+ if (!i || !i->node.prev) { \
+ new->node.prev = NULL; \
+ new->node.next = i; \
+ map->node.next = new; \
+ if (i) \
+ i->node.prev = new; \
+ } \
+ /* last in the list */ \
+ else if (i->node.next == NULL) { \
+ new->node.prev = i; \
+ new->node.next = NULL; \
+ i->node.next = new; \
+ } \
+ /* somewhere in the middle */ \
+ else { \
+ new->node.prev = i->node.prev; \
+ new->node.next = i; \
+ i->node.prev->node.next = new; \
+ i->node.prev = new; \
+ }
+ PUT_IT_IN_PLACE(p, prefix, nid)
+ PUT_IT_IN_PLACE(n, nid, prefix)
+ return 1;
+}
+
+static inline void remove_from_map(struct nid_prefix_map *map,
+ struct nid_prefix_map *entry)
+{
+ if (map->n.next == entry)
+ map->n.next = entry->n.next;
+ if (map->n.prev == entry)
+ map->n.prev = entry->n.prev;
+ if (map->p.next == entry)
+ map->p.next = entry->p.next;
+ if (map->p.prev == entry)
+ map->p.prev = entry->p.prev;
+}
+
+static inline void remove_from_map_and_free(struct nid_prefix_map *map,
+ struct nid_prefix_map *entry)
+{
+ remove_from_map(map, entry);
+ free(entry);
+}
+
+static int add_nid_to_map(struct nid_prefix_map *map, struct prefix *prefix,
+ nid_t nid)
+{
+ struct nid_prefix_map *new = calloc(1, sizeof(struct nid_prefix_map));
+ int ret;
+
+ if (!new)
return -1;
+
+ new->prefix = prefix;
+ new->nid = nid;
+ ret = add_to_map(map, new);
+
+ if (ret == 0)
+ free(new);
+
+ return ret;
+}
+
+static int add_prefix_to_map(struct nid_prefix_map *map, struct prefix *prefix)
+{
+ return add_nid_to_map(map, prefix, 0);
+}
+
+static void cleanup_prefix(struct nid_prefix_map *map,
+ struct nid_prefix_map *first)
+{
+ struct nid_prefix_map *i, *p = NULL;
+
+ for (i = first; i && first->prefix == i->prefix; i = i->p.next) {
+ if (p)
+ remove_from_map_and_free(map, p);
+
+ /* ignore errors */
+ remove_address_from_interface(i);
+
+ p = i;
}
+ if (p)
+ remove_from_map_and_free(map, p);
+}
- close(sock);
- return 0;
+static inline int add_nid_to_list(struct nid_list **head, nid_t nid)
+{
+ struct nid_list *i, *new;
+
+ for (i = *head; i && i->next && i->next->nid < nid; i = i->next)
+ ;
+ /* check if this nid is first in the list */
+ if (i && i->nid == nid)
+ return 0;
+ /* check if it's already in the list */
+ if (i && i->next && i->next->nid == nid)
+ return 0;
+
+ /* add it */
+ new = calloc(1, sizeof(struct nid_list));
+ if (!new)
+ return -1;
+ new->nid = nid;
+
+ /* this is the lowest nid in the list */
+ if (i == *head) {
+ *head = new;
+ new->next = i;
+ }
+ /* in the middle/at the end */
+ else if (i) {
+ new->next = i->next;
+ i->next = new;
+ }
+ /* there was no list */
+ else
+ *head = new;
+
+ return 1;
}
-static void do_slices_autoconf(struct prefix_list *head)
+static inline void free_nid_list(struct nid_list *head)
+{
+ struct nid_list *p;
+ for (p = NULL; head; head = head->next) {
+ if (p)
+ free(p);
+ p = head;
+ }
+ if (p)
+ free(p);
+}
+
+static inline void cleanup_nid(struct nid_prefix_map *map,
+ nid_t nid)
+{
+ struct nid_prefix_map *i, *p = NULL;
+ for (i = map->n.next; i->nid < nid; i = i->n.next)
+ ;
+ /* this nid doesn't have any entries in the map */
+ if (i->nid != nid)
+ return;
+ for (; i->nid == nid; i = i->n.next) {
+ if (p)
+ remove_from_map_and_free(map, p);
+ remove_address_from_interface(i);
+ p = i;
+ }
+ if (p)
+ remove_from_map_and_free(map, p);
+}
+
+static inline void cleanup_nids(struct nid_prefix_map *map,
+ struct nid_list *previous,
+ struct nid_list *current)
+{
+ struct nid_list *p, *pprev = NULL, *c;
+ for (p = previous, c = current; p; pprev = p, p = p->next) {
+ if (pprev)
+ free(pprev);
+ while (c->nid < p->nid)
+ c = c->next;
+ if (c->nid == p->nid)
+ continue;
+ /* this context has disappeared */
+ cleanup_nid(map, p->nid);
+ }
+ if (pprev)
+ free(pprev);
+}
+
+static void do_slices_autoconf(struct nid_prefix_map *map)
{
DIR *dp;
struct dirent *de;
- nid_t nid;
- struct vc_net_nx addr;
- struct prefix_list *i, *expired = NULL;
+ struct vc_net_addr addr;
+ struct nid_prefix_map *i;
+ struct nid_list *current = NULL, *n;
+ static struct nid_list *previous = NULL;
if ((dp = opendir("/proc/virtnet")) == NULL)
return;
while ((de = readdir(dp)) != NULL) {
+ nid_t nid;
+
if (!isdigit(de->d_name[0]))
continue;
nid = strtoul(de->d_name, NULL, 10);
- addr.type = vcNET_IPV6;
- addr.count = -1;
- if (vc_net_remove(nid, &addr) == -1)
+ addr.vna_type = VC_NXA_TYPE_IPV6 | VC_NXA_TYPE_ANY;
+ if (vc_net_remove(nid, &addr) == -1) {
+ syslog(LOG_ERR, "vc_net_remove(%u): %s", nid, strerror(errno));
continue;
+ }
+
+ add_nid_to_list(¤t, nid);
+ }
+ closedir(dp);
- for (i = head->next; i;) {
+ for (n = current; n; n = n->next) {
+ for (i = map->p.next; i && i->nid == 0;) {
/* expired */
- if (i->mask & HAS_PREFIX && i->prefix.valid_until < time(NULL)) {
- struct prefix_list *tmp;
- if (i->next)
- i->next->prev = i->prev;
- if (i->prev)
- i->prev->next = i->next;
-
- tmp = i->next;
- free(i);
+ if (i->prefix->mask & HAS_PREFIX && i->prefix->prefix.valid_until < time(NULL)) {
+ struct nid_prefix_map *tmp;
+ char buf[64];
+
+ inet_ntop(AF_INET6, &i->prefix->address.addr, buf, sizeof(buf));
+ syslog(LOG_NOTICE, "Address %s timed out", buf);
+
+ tmp = i->p.next;
+
+ cleanup_prefix(map, i);
+
i = tmp;
continue;
}
- if (i->mask != (HAS_ADDRESS|HAS_PREFIX))
+ if (i->prefix->mask != (HAS_ADDRESS|HAS_PREFIX))
goto next;
- addr.count = 1;
- addr.mask[0] = i->prefix.prefix_len;
- memcpy(addr.ip, &i->address.addr, sizeof(struct in6_addr));
- addr.ip[2] = htonl((ntohl(addr.ip[2]) & 0xffffff00) | ((nid & 0x7f00) >> 7));
- addr.ip[3] = htonl((ntohl(addr.ip[3]) & 0x00ffffff) | ((nid & 0xff) << 25));
- if (vc_net_add(nid, &addr) == -1) {
- perror("vc_net_add");
- exit(1);
+ addr.vna_type = VC_NXA_TYPE_IPV6 | VC_NXA_TYPE_ADDR;
+ memcpy(&addr.vna_v6_ip, &i->prefix->address.addr, sizeof(struct in6_addr));
+ addr.vna_prefix = i->prefix->prefix.prefix_len;
+ if (addr.vna_prefix == 64) {
+ addr.vna_v6_mask.s6_addr32[0] = addr.vna_v6_mask.s6_addr32[1] = 0xffffffff;
+ addr.vna_v6_mask.s6_addr32[2] = addr.vna_v6_mask.s6_addr32[3] = 0;
}
- if (add_address_to_interface(i->ifindex, (struct in6_addr *) addr.ip, i->prefix.prefix_len) == -1) {
- perror("add_address_to_interface");
- exit(1);
+ addr.vna_v6_ip.s6_addr[11] = (n->nid & 0x7f80) >> 7;
+ addr.vna_v6_ip.s6_addr[12] = (n->nid & 0x007f) << 1;
+ if (vc_net_add(n->nid, &addr) == -1) {
+ syslog(LOG_ERR, "vc_net_add(%u): %s", n->nid, strerror(errno));
+ goto next;
+ }
+ if (add_address_to_interface(i->prefix->ifindex, &addr.vna_v6_ip, addr.vna_prefix) == -1) {
+ syslog(LOG_ERR, "add_address_to_interface: %s", strerror(errno));
+ goto next;
+ }
+ if (add_nid_to_map(map, i->prefix, n->nid) == -1) {
+ syslog(LOG_ERR, "add_nid_to_map: %s", strerror(errno));
+ goto next;
}
next:
- i = i->next;
+ i = i->p.next;
}
}
- closedir(dp);
+
+ cleanup_nids(map, previous, current);
+ previous = current;
}
-static int add_prefix(struct prefix_list *head, struct prefixmsg *msg,
+/* XXX These two functions are very similar */
+static int add_prefix(struct nid_prefix_map *map, struct prefixmsg *msg,
struct in6_addr *prefix, struct prefix_cacheinfo *cache)
{
- struct prefix_list *i = head;
+ struct nid_prefix_map *i = map;
+ struct prefix *new;
+
if (!msg || !prefix || !cache)
return -1;
+ /* XXX IF_PREFIX_AUTOCONF == 0x02 */
+ if (!(msg->prefix_flags & 0x02))
+ return -1;
do {
- if (i->next != NULL)
- i = i->next;
- if (ipv6_prefix_equal(prefix, &i->prefix.addr, msg->prefix_len) ||
- ipv6_prefix_equal(prefix, &i->address.addr, msg->prefix_len)) {
- i->mask |= HAS_PREFIX;
- i->ifindex = msg->prefix_ifindex;
- memcpy(&i->prefix.addr, prefix, sizeof(*prefix));
- i->prefix.prefix_len = msg->prefix_len;
- i->prefix.valid_until = time(NULL) + cache->preferred_time;
+ if (i->p.next != NULL)
+ i = i->p.next;
+ if (ipv6_prefix_equal(prefix, &i->prefix->prefix.addr, msg->prefix_len) ||
+ ipv6_prefix_equal(prefix, &i->prefix->address.addr, msg->prefix_len)) {
+ i->prefix->mask |= HAS_PREFIX;
+ i->prefix->ifindex = msg->prefix_ifindex;
+ memcpy(&i->prefix->prefix.addr, prefix, sizeof(*prefix));
+ i->prefix->prefix.prefix_len = msg->prefix_len;
+ i->prefix->prefix.valid_until = time(NULL) + cache->preferred_time;
return 0;
}
- } while (i->next);
+ } while (i->p.next && i->nid == 0);
- i->next = calloc(1, sizeof(*i));
- if (!i->next)
+ /* not yet in the map */
+ new = calloc(1, sizeof(*new));
+ if (!new)
+ return -1;
+ new->mask = HAS_PREFIX;
+ memcpy(&new->prefix.addr, prefix, sizeof(*prefix));
+ new->prefix.prefix_len = msg->prefix_len;
+ new->prefix.valid_until = time(NULL) + cache->preferred_time;
+ if (add_prefix_to_map(map, new) == -1)
return -1;
- i->next->prev = i;
- i = i->next;
- i->mask = HAS_PREFIX;
- memcpy(&i->prefix.addr, prefix, sizeof(*prefix));
- i->prefix.prefix_len = msg->prefix_len;
- i->prefix.valid_until = time(NULL) + cache->preferred_time;
return 1;
}
-static inline int add_address(struct prefix_list *head, struct ifaddrmsg *msg,
+static inline int add_address(struct nid_prefix_map *map, struct ifaddrmsg *msg,
struct in6_addr *address, struct ifa_cacheinfo *cache)
{
- struct prefix_list *i = head;
+ struct nid_prefix_map *i = map;
+ struct prefix *new;
+
if (!msg || !address || !cache)
return -1;
if (address->s6_addr[11] != 0xFF || address->s6_addr[12] != 0xFE)
- return 0;
+ return -1;
do {
- if (i->next != NULL)
- i = i->next;
- if (ipv6_prefix_equal(address, &i->prefix.addr, msg->ifa_prefixlen) ||
- ipv6_prefix_equal(address, &i->address.addr, msg->ifa_prefixlen)) {
- i->mask |= HAS_ADDRESS;
- memcpy(&i->address.addr, address, sizeof(*address));
- i->address.prefix_len = msg->ifa_prefixlen;
- i->address.valid_until = time(NULL) + cache->ifa_prefered;
+ if (i->p.next != NULL)
+ i = i->p.next;
+ if (ipv6_prefix_equal(address, &i->prefix->prefix.addr, msg->ifa_prefixlen) ||
+ ipv6_prefix_equal(address, &i->prefix->address.addr, 128)) {
+ i->prefix->mask |= HAS_ADDRESS;
+ memcpy(&i->prefix->address.addr, address, sizeof(*address));
+ i->prefix->address.prefix_len = msg->ifa_prefixlen;
+ i->prefix->address.valid_until = time(NULL) + cache->ifa_prefered;
return 0;
}
- } while (i->next);
+ } while (i->p.next && i->nid == 0);
- i->next = calloc(1, sizeof(*i));
- if (!i->next)
+ new = calloc(1, sizeof(*new));
+ if (!new)
+ return -1;
+ new->mask = HAS_ADDRESS;
+ memcpy(&new->address.addr, address, sizeof(*address));
+ new->address.prefix_len = msg->ifa_prefixlen;
+ new->address.valid_until = time(NULL) + cache->ifa_prefered;
+ if (add_prefix_to_map(map, new) == -1)
return -1;
- i->next->prev = i;
- i = i->next;
- i->mask = HAS_ADDRESS;
- memcpy(&i->address.addr, address, sizeof(*address));
- i->address.prefix_len = msg->ifa_prefixlen;
- i->address.valid_until = time(NULL) + cache->ifa_prefered;
return 1;
}
-int main(int argc, char *argv[])
+static struct nla_policy addr_policy[IFA_MAX+1] = {
+ [IFA_ADDRESS] = { .minlen = sizeof(struct in6_addr) },
+ [IFA_LABEL] = { .type = NLA_STRING,
+ .maxlen = IFNAMSIZ },
+ [IFA_CACHEINFO] = { .minlen = sizeof(struct ifa_cacheinfo) },
+};
+static struct nla_policy prefix_policy[PREFIX_MAX+1] = {
+ [PREFIX_ADDRESS] = { .minlen = sizeof(struct in6_addr) },
+ [PREFIX_CACHEINFO] = { .minlen = sizeof(struct prefix_cacheinfo) },
+};
+int handle_valid_msg(struct nl_msg *msg, void *arg)
{
- int sock;
- struct sockaddr_nl sa;
- struct prefix_list head = { .prev = NULL, .next = NULL };
+ struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ int ret = -1;
+ char *payload;
+ struct sockaddr_nl *source = nlmsg_get_src(msg);
+
+ payload = nlmsg_data(nlh);
+ if (source->nl_groups == RTMGRP_IPV6_PREFIX) {
+ struct prefixmsg *prefixmsg;
+ struct in6_addr *prefix = NULL;
+ struct prefix_cacheinfo *cacheinfo = NULL;
+ struct nlattr *tb[PREFIX_MAX+1];
+
+ if (nlmsg_parse(nlh, sizeof(struct prefixmsg), tb, PREFIX_MAX, prefix_policy) < 0) {
+ syslog(LOG_ERR, "Failed to parse prefixmsg");
+ return -1;
+ }
- sock = socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE);
- if (sock == -1) {
- perror("socket()");
- exit(1);
+ prefixmsg = (struct prefixmsg *) payload;
+ if (tb[PREFIX_ADDRESS])
+ prefix = nl_data_get(nla_get_data(tb[PREFIX_ADDRESS]));
+ if (tb[PREFIX_CACHEINFO])
+ cacheinfo = nl_data_get(nla_get_data(tb[PREFIX_CACHEINFO]));
+ ret = add_prefix(arg, prefixmsg, prefix, cacheinfo);
+ }
+ else if (source->nl_groups == RTMGRP_IPV6_IFADDR) {
+ struct ifaddrmsg *ifaddrmsg;
+ struct in6_addr *address = NULL;
+ struct ifa_cacheinfo *cacheinfo = NULL;
+ struct nlattr *tb[IFA_MAX+1];
+
+ if (nlmsg_parse(nlh, sizeof(struct ifaddrmsg), tb, IFA_MAX, addr_policy) < 0) {
+ syslog(LOG_ERR, "Failed to parse ifaddrmsg");
+ return -1;
+ }
+
+ ifaddrmsg = (struct ifaddrmsg *) payload;
+ if (tb[IFA_ADDRESS])
+ address = nl_data_get(nla_get_data(tb[IFA_ADDRESS]));
+ if (tb[IFA_CACHEINFO])
+ cacheinfo = nl_data_get(nla_get_data(tb[IFA_CACHEINFO]));
+ ret = add_address(arg, ifaddrmsg, address, cacheinfo);
}
- sa.nl_family = AF_NETLINK;
- sa.nl_groups = RTMGRP_IPV6_PREFIX|RTMGRP_IPV6_IFADDR;
- if (bind(sock, (struct sockaddr *) &sa, sizeof(sa)) == -1) {
- perror("bind()");
- exit(1);
+ if (ret >= 0)
+ do_slices_autoconf(arg);
+
+ return 0;
+}
+
+int handle_error_msg(struct sockaddr_nl *source, struct nlmsgerr *err,
+ void *arg)
+{
+ syslog(LOG_ERR, "%s", strerror(err->error));
+ return 0;
+}
+
+int handle_no_op(struct nl_msg *msg, void *arg)
+{
+ return 0;
+}
+
+/* only for access in the signal handler */
+struct nid_prefix_map map = {
+ .n = {
+ .next = NULL,
+ .prev = NULL,
+ },
+ .p = {
+ .next = NULL,
+ .prev = NULL,
+ },
+};
+void signal_handler(int signal)
+{
+ switch (signal) {
+ case SIGUSR1:
+ do_slices_autoconf(&map);
+ break;
}
+}
- while (1) {
- char buf[4000], *payload;
- struct nlmsghdr *nlh;
- ssize_t len, this_len;
- socklen_t socklen = sizeof(sa);
-
- if ((len = recvfrom(sock, buf, sizeof(buf), 0,
- (struct sockaddr *) &sa, &socklen)) <= 0)
- break;
- for (nlh = (struct nlmsghdr *) buf; NLMSG_OK(nlh, len); nlh = NLMSG_NEXT(nlh, len)) {
- struct nlattr *nla;
-
- if (nlh->nlmsg_type == NLMSG_DONE)
- break;
- else if (nlh->nlmsg_type == NLMSG_ERROR)
- break;
-
- this_len = NLMSG_ALIGN((nlh)->nlmsg_len) - NLMSG_LENGTH(0);
- payload = NLMSG_DATA(nlh);
- if (sa.nl_groups == RTMGRP_IPV6_PREFIX) {
- struct prefixmsg *prefixmsg;
- struct in6_addr *prefix;
- struct prefix_cacheinfo *cacheinfo;
-
- prefixmsg = (struct prefixmsg *) payload;
- prefix = NULL;
- cacheinfo = NULL;
- for (nla = (struct nlattr *)(payload + sizeof(*prefixmsg)); nla < payload + this_len; nla = (char *) nla + nla->nla_len) {
- if (nla->nla_type == PREFIX_ADDRESS)
- prefix = (struct in6_addr *)(((char *) nla) + sizeof(*nla));
- else if (nla->nla_type == PREFIX_CACHEINFO)
- cacheinfo = (struct prefix_cacheinfo *)(((char *) nla) + sizeof(*nla));
- }
- if (add_prefix(&head, prefixmsg, prefix, cacheinfo) == -1) {
- printf("Adding prefix failed!\n");
- }
- }
- else if (sa.nl_groups == RTMGRP_IPV6_IFADDR) {
- struct ifaddrmsg *ifaddrmsg;
- struct in6_addr *address;
- struct ifa_cacheinfo *cacheinfo;
-
- ifaddrmsg = (struct ifaddrmsg *) payload;
- address = NULL;
- cacheinfo = NULL;
- for (nla = (struct nlattr *)(payload + sizeof(*ifaddrmsg)); nla < payload + this_len; nla = (char *) nla + nla->nla_len) {
- if (nla->nla_type == IFA_ADDRESS)
- address = (struct in6_addr *)(((char *) nla) + sizeof(*nla));
- else if (nla->nla_type == IFA_CACHEINFO)
- cacheinfo = (struct ifa_cacheinfo *)(((char *) nla) + sizeof(*nla));
- }
- if (add_address(&head, ifaddrmsg, address, cacheinfo) == -1) {
- printf("Adding address failed!\n");
- }
- }
- }
- do_slices_autoconf(&head);
+static int write_pidfile(const char *filename)
+{
+ FILE *fp;
+ fp = fopen(filename, "w");
+ if (!fp)
+ return -1;
+ fprintf(fp, "%d\n", getpid());
+ fclose(fp);
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ struct nl_cb *cbs;
+
+ openlog("vip6-autod", LOG_PERROR, LOG_DAEMON);
+
+ handle = nl_handle_alloc_nondefault(NL_CB_VERBOSE);
+ cbs = nl_handle_get_cb(handle);
+ nl_cb_set(cbs, NL_CB_VALID, NL_CB_CUSTOM, handle_valid_msg, &map);
+ nl_cb_set(cbs, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, handle_no_op, NULL);
+ nl_cb_err(cbs, NL_CB_CUSTOM, handle_error_msg, &map);
+ nl_disable_sequence_check(handle);
+
+ nl_join_groups(handle, RTMGRP_IPV6_PREFIX|RTMGRP_IPV6_IFADDR);
+ if (nl_connect(handle, NETLINK_ROUTE) == -1) {
+ syslog(LOG_CRIT, "nl_connect: %s", strerror(errno));
+ exit(1);
}
- close(sock);
+ if (daemon(0, 0) == -1)
+ return -1;
+
+ /* XXX .. here is a hack */
+ write_pidfile(DEFAULT_PKGSTATEDIR "/../vip6-autod.pid");
+
+ signal(SIGUSR1, signal_handler);
+
+ while (nl_recvmsgs(handle, cbs) > 0);
+
+ nl_close(handle);
+ closelog();
return 0;
}
git://git.onelab.eu / util-vserver.git / blobdiff