/* SPDX-License-Identifier: LGPL-2.1+ */
-/***
- This file is part of systemd.
-
- Copyright 2013 Tom Gundersen <teg@jklm.no>
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
#include <net/if.h>
#include "set.h"
#include "socket-util.h"
#include "string-util.h"
+#include "strv.h"
#include "utf8.h"
#include "util.h"
#define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U
int address_new(Address **ret) {
- _cleanup_address_free_ Address *address = NULL;
+ _cleanup_(address_freep) Address *address = NULL;
- address = new0(Address, 1);
+ address = new(Address, 1);
if (!address)
return -ENOMEM;
- address->family = AF_UNSPEC;
- address->scope = RT_SCOPE_UNIVERSE;
- address->cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME;
- address->cinfo.ifa_valid = CACHE_INFO_INFINITY_LIFE_TIME;
+ *address = (Address) {
+ .family = AF_UNSPEC,
+ .scope = RT_SCOPE_UNIVERSE,
+ .cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME,
+ .cinfo.ifa_valid = CACHE_INFO_INFINITY_LIFE_TIME,
+ };
- *ret = address;
- address = NULL;
+ *ret = TAKE_PTR(address);
return 0;
}
int address_new_static(Network *network, const char *filename, unsigned section_line, Address **ret) {
- _cleanup_network_config_section_free_ NetworkConfigSection *n = NULL;
- _cleanup_address_free_ Address *address = NULL;
+ _cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
+ _cleanup_(address_freep) Address *address = NULL;
int r;
assert(network);
address = hashmap_get(network->addresses_by_section, n);
if (address) {
- *ret = address;
- address = NULL;
+ *ret = TAKE_PTR(address);
return 0;
}
if (r < 0)
return r;
+ address->network = network;
+ LIST_APPEND(addresses, network->static_addresses, address);
+ network->n_static_addresses++;
+
if (filename) {
- address->section = n;
- n = NULL;
+ address->section = TAKE_PTR(n);
+
+ r = hashmap_ensure_allocated(&network->addresses_by_section, &network_config_hash_ops);
+ if (r < 0)
+ return r;
r = hashmap_put(network->addresses_by_section, address->section, address);
if (r < 0)
return r;
}
- address->network = network;
- LIST_APPEND(addresses, network->static_addresses, address);
- network->n_static_addresses++;
-
- *ret = address;
- address = NULL;
+ *ret = TAKE_PTR(address);
return 0;
}
assert(address->network->n_static_addresses > 0);
address->network->n_static_addresses--;
- if (address->section) {
+ if (address->section)
hashmap_remove(address->network->addresses_by_section, address->section);
- network_config_section_free(address->section);
- }
}
if (address->link) {
memzero(&address->link->ipv6ll_address, sizeof(struct in6_addr));
}
+ network_config_section_free(address->section);
+ free(address->label);
free(address);
}
-static void address_hash_func(const void *b, struct siphash *state) {
- const Address *a = b;
-
+static void address_hash_func(const Address *a, struct siphash *state) {
assert(a);
siphash24_compress(&a->family, sizeof(a->family), state);
}
}
-static int address_compare_func(const void *c1, const void *c2) {
- const Address *a1 = c1, *a2 = c2;
+static int address_compare_func(const Address *a1, const Address *a2) {
+ int r;
- if (a1->family < a2->family)
- return -1;
- if (a1->family > a2->family)
- return 1;
+ r = CMP(a1->family, a2->family);
+ if (r != 0)
+ return r;
switch (a1->family) {
/* use the same notion of equality as the kernel does */
case AF_INET:
- if (a1->prefixlen < a2->prefixlen)
- return -1;
- if (a1->prefixlen > a2->prefixlen)
- return 1;
+ r = CMP(a1->prefixlen, a2->prefixlen);
+ if (r != 0)
+ return r;
/* compare the peer prefixes */
if (a1->prefixlen != 0) {
else
b2 = be32toh(a2->in_addr.in.s_addr) >> (32 - a1->prefixlen);
- if (b1 < b2)
- return -1;
- if (b1 > b2)
- return 1;
+ r = CMP(b1, b2);
+ if (r != 0)
+ return r;
}
_fallthrough_;
}
}
-static const struct hash_ops address_hash_ops = {
- .hash = address_hash_func,
- .compare = address_compare_func
-};
+DEFINE_PRIVATE_HASH_OPS(address_hash_ops, Address, address_hash_func, address_compare_func);
bool address_equal(Address *a1, Address *a2) {
if (a1 == a2)
const union in_addr_union *in_addr,
unsigned char prefixlen,
Address **ret) {
- _cleanup_address_free_ Address *address = NULL;
+ _cleanup_(address_freep) Address *address = NULL;
int r;
assert(link);
return -ENOENT;
}
+static int address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, Link *link) {
+ int r;
+
+ assert(m);
+ assert(link);
+ assert(link->ifname);
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return 1;
+
+ r = sd_netlink_message_get_errno(m);
+ if (r < 0 && r != -EADDRNOTAVAIL)
+ log_link_warning_errno(link, r, "Could not drop address: %m");
+
+ return 1;
+}
+
int address_remove(
Address *address,
Link *link,
- sd_netlink_message_handler_t callback) {
+ link_netlink_message_handler_t callback) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
+ _cleanup_free_ char *b = NULL;
int r;
assert(address);
assert(link->manager);
assert(link->manager->rtnl);
+ if (DEBUG_LOGGING) {
+ if (in_addr_to_string(address->family, &address->in_addr, &b) >= 0)
+ log_link_debug(link, "Removing address %s", b);
+ }
+
r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_DELADDR,
link->ifindex, address->family);
if (r < 0)
if (r < 0)
return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m");
- r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
+ r = netlink_call_async(link->manager->rtnl, NULL, req,
+ callback ?: address_remove_handler,
+ link_netlink_destroy_callback, link);
if (r < 0)
return log_error_errno(r, "Could not send rtnetlink message: %m");
static int address_acquire(Link *link, Address *original, Address **ret) {
union in_addr_union in_addr = {};
struct in_addr broadcast = {};
- _cleanup_address_free_ Address *na = NULL;
+ _cleanup_(address_freep) Address *na = NULL;
int r;
assert(link);
LIST_PREPEND(addresses, link->pool_addresses, na);
- *ret = na;
- na = NULL;
+ *ret = TAKE_PTR(na);
return 0;
}
int address_configure(
Address *address,
Link *link,
- sd_netlink_message_handler_t callback,
+ link_netlink_message_handler_t callback,
bool update) {
_cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL;
assert(link->ifindex > 0);
assert(link->manager);
assert(link->manager->rtnl);
+ assert(callback);
/* If this is a new address, then refuse adding more than the limit */
if (address_get(link, address->family, &address->in_addr, address->prefixlen, NULL) <= 0 &&
if (r < 0)
return r;
- r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
+ r = netlink_call_async(link->manager->rtnl, NULL, req, callback,
+ link_netlink_destroy_callback, link);
if (r < 0) {
address_release(address);
return log_error_errno(r, "Could not send rtnetlink message: %m");
void *userdata) {
Network *network = userdata;
- _cleanup_address_free_ Address *n = NULL;
+ _cleanup_(address_freep) Address *n = NULL;
int r;
assert(filename);
void *userdata) {
Network *network = userdata;
- _cleanup_address_free_ Address *n = NULL;
- const char *address, *e;
+ _cleanup_(address_freep) Address *n = NULL;
union in_addr_union buffer;
+ unsigned char prefixlen;
int r, f;
assert(filename);
return r;
/* Address=address/prefixlen */
-
- /* prefixlen */
- e = strchr(rvalue, '/');
- if (e) {
- unsigned i;
-
- r = safe_atou(e + 1, &i);
- if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, r, "Prefix length is invalid, ignoring assignment: %s", e + 1);
- return 0;
- }
-
- n->prefixlen = (unsigned char) i;
-
- address = strndupa(rvalue, e - rvalue);
- } else
- address = rvalue;
-
- r = in_addr_from_string_auto(address, &f, &buffer);
+ r = in_addr_default_prefix_from_string_auto(rvalue, &f, &buffer, &prefixlen);
if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, r, "Address is invalid, ignoring assignment: %s", address);
+ log_syntax(unit, LOG_ERR, filename, line, r, "Invalid address '%s', ignoring assignment: %m", rvalue);
return 0;
}
- if (!e && f == AF_INET) {
- r = in4_addr_default_prefixlen(&buffer.in, &n->prefixlen);
- if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, r, "Prefix length not specified, and a default one cannot be deduced for '%s', ignoring assignment", address);
- return 0;
- }
- }
-
if (n->family != AF_UNSPEC && f != n->family) {
- log_syntax(unit, LOG_ERR, filename, line, 0, "Address is incompatible, ignoring assignment: %s", address);
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Address is incompatible, ignoring assignment: %s", rvalue);
return 0;
}
n->family = f;
+ n->prefixlen = prefixlen;
if (streq(lvalue, "Address"))
n->in_addr = buffer;
void *data,
void *userdata) {
- _cleanup_address_free_ Address *n = NULL;
+ _cleanup_(address_freep) Address *n = NULL;
Network *network = userdata;
int r;
void *data,
void *userdata) {
Network *network = userdata;
- _cleanup_address_free_ Address *n = NULL;
+ _cleanup_(address_freep) Address *n = NULL;
unsigned k;
int r;
void *data,
void *userdata) {
Network *network = userdata;
- _cleanup_address_free_ Address *n = NULL;
+ _cleanup_(address_freep) Address *n = NULL;
int r;
assert(filename);
void *data,
void *userdata) {
Network *network = userdata;
- _cleanup_address_free_ Address *n = NULL;
+ _cleanup_(address_freep) Address *n = NULL;
int r;
assert(filename);
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