243 lines
7.4 KiB
C
243 lines
7.4 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
|
|
#include <net/if.h>
|
|
#include <linux/if_addrlabel.h>
|
|
|
|
#include "alloc-util.h"
|
|
#include "netlink-util.h"
|
|
#include "networkd-address-label.h"
|
|
#include "networkd-link.h"
|
|
#include "networkd-manager.h"
|
|
#include "networkd-network.h"
|
|
#include "parse-util.h"
|
|
|
|
AddressLabel *address_label_free(AddressLabel *label) {
|
|
if (!label)
|
|
return NULL;
|
|
|
|
if (label->network) {
|
|
assert(label->section);
|
|
hashmap_remove(label->network->address_labels_by_section, label->section);
|
|
}
|
|
|
|
network_config_section_free(label->section);
|
|
return mfree(label);
|
|
}
|
|
|
|
DEFINE_NETWORK_SECTION_FUNCTIONS(AddressLabel, address_label_free);
|
|
|
|
static int address_label_new_static(Network *network, const char *filename, unsigned section_line, AddressLabel **ret) {
|
|
_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
|
|
_cleanup_(address_label_freep) AddressLabel *label = NULL;
|
|
int r;
|
|
|
|
assert(network);
|
|
assert(ret);
|
|
assert(filename);
|
|
assert(section_line > 0);
|
|
|
|
r = network_config_section_new(filename, section_line, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
label = hashmap_get(network->address_labels_by_section, n);
|
|
if (label) {
|
|
*ret = TAKE_PTR(label);
|
|
return 0;
|
|
}
|
|
|
|
label = new(AddressLabel, 1);
|
|
if (!label)
|
|
return -ENOMEM;
|
|
|
|
*label = (AddressLabel) {
|
|
.network = network,
|
|
.section = TAKE_PTR(n),
|
|
};
|
|
|
|
r = hashmap_ensure_allocated(&network->address_labels_by_section, &network_config_hash_ops);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = hashmap_put(network->address_labels_by_section, label->section, label);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
*ret = TAKE_PTR(label);
|
|
return 0;
|
|
}
|
|
|
|
static int address_label_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
|
|
int r;
|
|
|
|
assert(rtnl);
|
|
assert(m);
|
|
assert(link);
|
|
assert(link->ifname);
|
|
assert(link->address_label_messages > 0);
|
|
|
|
link->address_label_messages--;
|
|
|
|
if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
|
|
return 1;
|
|
|
|
r = sd_netlink_message_get_errno(m);
|
|
if (r < 0 && r != -EEXIST) {
|
|
log_link_message_warning_errno(link, m, r, "Could not set address label");
|
|
link_enter_failed(link);
|
|
return 1;
|
|
} else if (r >= 0)
|
|
(void) manager_rtnl_process_address(rtnl, m, link->manager);
|
|
|
|
if (link->address_label_messages == 0)
|
|
log_link_debug(link, "Addresses label set");
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int address_label_configure(AddressLabel *label, Link *link) {
|
|
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
|
|
int r;
|
|
|
|
assert(label);
|
|
assert(link);
|
|
assert(link->ifindex > 0);
|
|
assert(link->manager);
|
|
assert(link->manager->rtnl);
|
|
|
|
r = sd_rtnl_message_new_addrlabel(link->manager->rtnl, &req, RTM_NEWADDRLABEL,
|
|
link->ifindex, AF_INET6);
|
|
if (r < 0)
|
|
return log_link_error_errno(link, r, "Could not allocate RTM_NEWADDR message: %m");
|
|
|
|
r = sd_rtnl_message_addrlabel_set_prefixlen(req, label->prefixlen);
|
|
if (r < 0)
|
|
return log_link_error_errno(link, r, "Could not set prefixlen: %m");
|
|
|
|
r = sd_netlink_message_append_u32(req, IFAL_LABEL, label->label);
|
|
if (r < 0)
|
|
return log_link_error_errno(link, r, "Could not append IFAL_LABEL attribute: %m");
|
|
|
|
r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &label->in_addr.in6);
|
|
if (r < 0)
|
|
return log_link_error_errno(link, r, "Could not append IFA_ADDRESS attribute: %m");
|
|
|
|
r = netlink_call_async(link->manager->rtnl, NULL, req,
|
|
address_label_handler,
|
|
link_netlink_destroy_callback, link);
|
|
if (r < 0)
|
|
return log_link_error_errno(link, r, "Could not send rtnetlink message: %m");
|
|
|
|
link_ref(link);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int link_set_address_labels(Link *link) {
|
|
AddressLabel *label;
|
|
int r;
|
|
|
|
assert(link);
|
|
assert(link->network);
|
|
|
|
HASHMAP_FOREACH(label, link->network->address_labels_by_section) {
|
|
r = address_label_configure(label, link);
|
|
if (r < 0)
|
|
return log_link_warning_errno(link, r, "Could not set address label: %m");
|
|
|
|
link->address_label_messages++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void network_verify_address_labels(Network *network) {
|
|
AddressLabel *label;
|
|
|
|
assert(network);
|
|
|
|
HASHMAP_FOREACH(label, network->address_labels_by_section)
|
|
if (section_is_invalid(label->section))
|
|
address_label_free(label);
|
|
}
|
|
|
|
int config_parse_address_label_prefix(const char *unit,
|
|
const char *filename,
|
|
unsigned line,
|
|
const char *section,
|
|
unsigned section_line,
|
|
const char *lvalue,
|
|
int ltype,
|
|
const char *rvalue,
|
|
void *data,
|
|
void *userdata) {
|
|
|
|
_cleanup_(address_label_free_or_set_invalidp) AddressLabel *n = NULL;
|
|
Network *network = userdata;
|
|
int r;
|
|
|
|
assert(filename);
|
|
assert(section);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
assert(data);
|
|
|
|
r = address_label_new_static(network, filename, section_line, &n);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
r = in_addr_prefix_from_string(rvalue, AF_INET6, &n->in_addr, &n->prefixlen);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r, "Address label is invalid, ignoring assignment: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
n = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int config_parse_address_label(
|
|
const char *unit,
|
|
const char *filename,
|
|
unsigned line,
|
|
const char *section,
|
|
unsigned section_line,
|
|
const char *lvalue,
|
|
int ltype,
|
|
const char *rvalue,
|
|
void *data,
|
|
void *userdata) {
|
|
|
|
_cleanup_(address_label_free_or_set_invalidp) AddressLabel *n = NULL;
|
|
Network *network = userdata;
|
|
uint32_t k;
|
|
int r;
|
|
|
|
assert(filename);
|
|
assert(section);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
assert(data);
|
|
|
|
r = address_label_new_static(network, filename, section_line, &n);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
r = safe_atou32(rvalue, &k);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse address label, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
if (k == 0xffffffffUL) {
|
|
log_syntax(unit, LOG_WARNING, filename, line, 0, "Address label is invalid, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
n->label = k;
|
|
n = NULL;
|
|
|
|
return 0;
|
|
}
|