static void test_get_addresses(sd_rtnl *rtnl) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL, *reply = NULL;
sd_rtnl_message *m;
assert_se(sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, AF_UNSPEC) >= 0);
assert_se(sd_rtnl_call(rtnl, req, 0, &reply) >= 0);
for (m = reply; m; m = sd_rtnl_message_next(m)) {
uint16_t type;
unsigned char scope, flags;
int family, ifindex;
assert_se(sd_rtnl_message_get_type(m, &type) >= 0);
assert_se(type == RTM_NEWADDR);
assert_se(sd_rtnl_message_addr_get_ifindex(m, &ifindex) >= 0);
assert_se(sd_rtnl_message_addr_get_family(m, &family) >= 0);
assert_se(sd_rtnl_message_addr_get_scope(m, &scope) >= 0);
assert_se(sd_rtnl_message_addr_get_flags(m, &flags) >= 0);
assert_se(ifindex > 0);
assert_se(family == AF_INET || family == AF_INET6);
log_info("got IPv%u address on ifindex %i", family == AF_INET ? 4: 6, ifindex);
}
}
int sd_rtnl_message_new_addr_update(sd_netlink *rtnl, sd_netlink_message **ret,
int index, int family) {
int r;
r = sd_rtnl_message_new_addr(rtnl, ret, RTM_NEWADDR, index, family);
if (r < 0)
return r;
(*ret)->hdr->nlmsg_flags |= NLM_F_REPLACE;
return 0;
}
int address_drop(Address *address, Link *link,
sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
assert(address);
assert(address->family == AF_INET || address->family == AF_INET6);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR,
link->ifindex, address->family);
if (r < 0) {
log_error("Could not allocate RTM_DELADDR message: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
if (r < 0) {
log_error("Could not set prefixlen: %s", strerror(-r));
return r;
}
if (address->family == AF_INET)
r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
else if (address->family == AF_INET6)
r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
if (r < 0) {
log_error("Could not append IFA_LOCAL attribute: %s",
strerror(-r));
return r;
}
r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0) {
log_error("Could not send rtnetlink message: %s", strerror(-r));
return r;
}
return 0;
}
static void test_address_get(sd_rtnl *rtnl, int ifindex) {
sd_rtnl_message *m;
sd_rtnl_message *r;
struct in_addr in_data;
assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0);
assert_se(m);
assert_se(sd_rtnl_call(rtnl, m, -1, &r) == 1);
assert_se(sd_rtnl_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0);
assert_se(sd_rtnl_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0);
assert_se(sd_rtnl_message_read_in_addr(r, IFA_LABEL, &in_data) == 0);
assert_se(sd_rtnl_message_read_in_addr(r, IFA_CACHEINFO, &in_data) == 0);
assert_se(sd_rtnl_flush(rtnl) >= 0);
assert_se((m = sd_rtnl_message_unref(m)) == NULL);
assert_se((r = sd_rtnl_message_unref(r)) == NULL);
}
static void test_address_get(sd_netlink *rtnl, int ifindex) {
sd_netlink_message *m;
sd_netlink_message *r;
struct in_addr in_data;
struct ifa_cacheinfo cache;
const char *label;
assert_se(sd_rtnl_message_new_addr(rtnl, &m, RTM_GETADDR, ifindex, AF_INET) >= 0);
assert_se(m);
assert_se(sd_netlink_call(rtnl, m, -1, &r) == 1);
assert_se(sd_netlink_message_read_in_addr(r, IFA_LOCAL, &in_data) == 0);
assert_se(sd_netlink_message_read_in_addr(r, IFA_ADDRESS, &in_data) == 0);
assert_se(sd_netlink_message_read_string(r, IFA_LABEL, &label) == 0);
assert_se(sd_netlink_message_read_cache_info(r, IFA_CACHEINFO, &cache) == 0);
assert_se((m = sd_netlink_message_unref(m)) == NULL);
assert_se((r = sd_netlink_message_unref(r)) == NULL);
}
int address_configure(Address *address, Link *link,
sd_rtnl_message_handler_t callback) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
assert(address);
assert(address->family == AF_INET || address->family == AF_INET6);
assert(link);
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
r = sd_rtnl_message_new_addr(RTM_NEWADDR, link->ifindex,
address->family, &req);
if (r < 0) {
log_error("Could not allocate RTM_NEWADDR message: %s",
strerror(-r));
return r;
}
r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen);
if (r < 0) {
log_error("Could not set prefixlen: %s", strerror(-r));
return r;
}
r = sd_rtnl_message_addr_set_flags(req, IFA_F_PERMANENT);
if (r < 0) {
log_error("Could not set flags: %s", strerror(-r));
return r;
}
r = sd_rtnl_message_addr_set_scope(req, RT_SCOPE_UNIVERSE);
if (r < 0) {
log_error("Could not set scope: %s", strerror(-r));
return r;
}
if (address->family == AF_INET)
r = sd_rtnl_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in);
else if (address->family == AF_INET6)
r = sd_rtnl_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6);
if (r < 0) {
log_error("Could not append IFA_LOCAL attribute: %s",
strerror(-r));
return r;
}
if (address->family == AF_INET) {
r = sd_rtnl_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast);
if (r < 0) {
log_error("Could not append IFA_BROADCAST attribute: %s",
strerror(-r));
return r;
}
}
if (address->label) {
r = sd_rtnl_message_append_string(req, IFA_LABEL, address->label);
if (r < 0) {
log_error("Could not append IFA_LABEL attribute: %s",
strerror(-r));
return r;
}
}
r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
if (r < 0) {
log_error("Could not send rtnetlink message: %s", strerror(-r));
return r;
}
return 0;
}
int local_addresses(sd_netlink *context, int ifindex, int af, struct local_address **ret) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL, *reply = NULL;
_cleanup_(sd_netlink_unrefp) sd_netlink *rtnl = NULL;
_cleanup_free_ struct local_address *list = NULL;
size_t n_list = 0, n_allocated = 0;
sd_netlink_message *m;
int r;
assert(ret);
if (context)
rtnl = sd_netlink_ref(context);
else {
r = sd_netlink_open(&rtnl);
if (r < 0)
return r;
}
r = sd_rtnl_message_new_addr(rtnl, &req, RTM_GETADDR, 0, af);
if (r < 0)
return r;
r = sd_netlink_call(rtnl, req, 0, &reply);
if (r < 0)
return r;
for (m = reply; m; m = sd_netlink_message_next(m)) {
struct local_address *a;
unsigned char flags;
uint16_t type;
int ifi, family;
r = sd_netlink_message_get_errno(m);
if (r < 0)
return r;
r = sd_netlink_message_get_type(m, &type);
if (r < 0)
return r;
if (type != RTM_NEWADDR)
continue;
r = sd_rtnl_message_addr_get_ifindex(m, &ifi);
if (r < 0)
return r;
if (ifindex > 0 && ifi != ifindex)
continue;
r = sd_rtnl_message_addr_get_family(m, &family);
if (r < 0)
return r;
if (af != AF_UNSPEC && af != family)
continue;
r = sd_rtnl_message_addr_get_flags(m, &flags);
if (r < 0)
return r;
if (flags & IFA_F_DEPRECATED)
continue;
if (!GREEDY_REALLOC0(list, n_allocated, n_list+1))
return -ENOMEM;
a = list + n_list;
r = sd_rtnl_message_addr_get_scope(m, &a->scope);
if (r < 0)
return r;
if (ifindex == 0 && IN_SET(a->scope, RT_SCOPE_HOST, RT_SCOPE_NOWHERE))
continue;
switch (family) {
case AF_INET:
r = sd_netlink_message_read_in_addr(m, IFA_LOCAL, &a->address.in);
if (r < 0) {
r = sd_netlink_message_read_in_addr(m, IFA_ADDRESS, &a->address.in);
if (r < 0)
continue;
}
break;
case AF_INET6:
r = sd_netlink_message_read_in6_addr(m, IFA_LOCAL, &a->address.in6);
if (r < 0) {
r = sd_netlink_message_read_in6_addr(m, IFA_ADDRESS, &a->address.in6);
if (r < 0)
continue;
}
break;
default:
continue;
}
a->ifindex = ifi;
a->family = family;
n_list++;
};
qsort_safe(list, n_list, sizeof(struct local_address), address_compare);
*ret = TAKE_PTR(list);
return (int) n_list;
}
