| /*** |
| 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 "alloc-util.h" |
| #include "conf-parser.h" |
| #include "firewall-util.h" |
| #include "netlink-util.h" |
| #include "networkd-address.h" |
| #include "networkd.h" |
| #include "parse-util.h" |
| #include "set.h" |
| #include "socket-util.h" |
| #include "string-util.h" |
| #include "utf8.h" |
| #include "util.h" |
| |
| #define ADDRESSES_PER_LINK_MAX 2048U |
| #define STATIC_ADDRESSES_PER_NETWORK_MAX 1024U |
| |
| int address_new(Address **ret) { |
| _cleanup_address_free_ Address *address = NULL; |
| |
| address = new0(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; |
| |
| *ret = address; |
| address = NULL; |
| |
| return 0; |
| } |
| |
| int address_new_static(Network *network, unsigned section, Address **ret) { |
| _cleanup_address_free_ Address *address = NULL; |
| int r; |
| |
| assert(network); |
| assert(ret); |
| |
| if (section) { |
| address = hashmap_get(network->addresses_by_section, UINT_TO_PTR(section)); |
| if (address) { |
| *ret = address; |
| address = NULL; |
| |
| return 0; |
| } |
| } |
| |
| if (network->n_static_addresses >= STATIC_ADDRESSES_PER_NETWORK_MAX) |
| return -E2BIG; |
| |
| r = address_new(&address); |
| if (r < 0) |
| return r; |
| |
| if (section) { |
| address->section = section; |
| hashmap_put(network->addresses_by_section, UINT_TO_PTR(address->section), address); |
| } |
| |
| address->network = network; |
| LIST_APPEND(addresses, network->static_addresses, address); |
| network->n_static_addresses++; |
| |
| *ret = address; |
| address = NULL; |
| |
| return 0; |
| } |
| |
| void address_free(Address *address) { |
| if (!address) |
| return; |
| |
| if (address->network) { |
| LIST_REMOVE(addresses, address->network->static_addresses, address); |
| assert(address->network->n_static_addresses > 0); |
| address->network->n_static_addresses--; |
| |
| if (address->section) |
| hashmap_remove(address->network->addresses_by_section, UINT_TO_PTR(address->section)); |
| } |
| |
| if (address->link) { |
| set_remove(address->link->addresses, address); |
| set_remove(address->link->addresses_foreign, address); |
| |
| if (in_addr_equal(AF_INET6, &address->in_addr, (const union in_addr_union *) &address->link->ipv6ll_address)) |
| memzero(&address->link->ipv6ll_address, sizeof(struct in6_addr)); |
| } |
| |
| free(address); |
| } |
| |
| static void address_hash_func(const void *b, struct siphash *state) { |
| const Address *a = b; |
| |
| assert(a); |
| |
| siphash24_compress(&a->family, sizeof(a->family), state); |
| |
| switch (a->family) { |
| case AF_INET: |
| siphash24_compress(&a->prefixlen, sizeof(a->prefixlen), state); |
| |
| /* peer prefix */ |
| if (a->prefixlen != 0) { |
| uint32_t prefix; |
| |
| if (a->in_addr_peer.in.s_addr != 0) |
| prefix = be32toh(a->in_addr_peer.in.s_addr) >> (32 - a->prefixlen); |
| else |
| prefix = be32toh(a->in_addr.in.s_addr) >> (32 - a->prefixlen); |
| |
| siphash24_compress(&prefix, sizeof(prefix), state); |
| } |
| |
| /* fallthrough */ |
| case AF_INET6: |
| /* local address */ |
| siphash24_compress(&a->in_addr, FAMILY_ADDRESS_SIZE(a->family), state); |
| |
| break; |
| default: |
| /* treat any other address family as AF_UNSPEC */ |
| break; |
| } |
| } |
| |
| static int address_compare_func(const void *c1, const void *c2) { |
| const Address *a1 = c1, *a2 = c2; |
| |
| if (a1->family < a2->family) |
| return -1; |
| if (a1->family > a2->family) |
| return 1; |
| |
| 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; |
| |
| /* compare the peer prefixes */ |
| if (a1->prefixlen != 0) { |
| /* make sure we don't try to shift by 32. |
| * See ISO/IEC 9899:TC3 § 6.5.7.3. */ |
| uint32_t b1, b2; |
| |
| if (a1->in_addr_peer.in.s_addr != 0) |
| b1 = be32toh(a1->in_addr_peer.in.s_addr) >> (32 - a1->prefixlen); |
| else |
| b1 = be32toh(a1->in_addr.in.s_addr) >> (32 - a1->prefixlen); |
| |
| if (a2->in_addr_peer.in.s_addr != 0) |
| b2 = be32toh(a2->in_addr_peer.in.s_addr) >> (32 - a1->prefixlen); |
| else |
| b2 = be32toh(a2->in_addr.in.s_addr) >> (32 - a1->prefixlen); |
| |
| if (b1 < b2) |
| return -1; |
| if (b1 > b2) |
| return 1; |
| } |
| |
| /* fall-through */ |
| case AF_INET6: |
| return memcmp(&a1->in_addr, &a2->in_addr, FAMILY_ADDRESS_SIZE(a1->family)); |
| default: |
| /* treat any other address family as AF_UNSPEC */ |
| return 0; |
| } |
| } |
| |
| static const struct hash_ops address_hash_ops = { |
| .hash = address_hash_func, |
| .compare = address_compare_func |
| }; |
| |
| bool address_equal(Address *a1, Address *a2) { |
| if (a1 == a2) |
| return true; |
| |
| if (!a1 || !a2) |
| return false; |
| |
| return address_compare_func(a1, a2) == 0; |
| } |
| |
| static int address_establish(Address *address, Link *link) { |
| bool masq; |
| int r; |
| |
| assert(address); |
| assert(link); |
| |
| masq = link->network && |
| link->network->ip_masquerade && |
| address->family == AF_INET && |
| address->scope < RT_SCOPE_LINK; |
| |
| /* Add firewall entry if this is requested */ |
| if (address->ip_masquerade_done != masq) { |
| union in_addr_union masked = address->in_addr; |
| in_addr_mask(address->family, &masked, address->prefixlen); |
| |
| r = fw_add_masquerade(masq, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0); |
| if (r < 0) |
| log_link_warning_errno(link, r, "Could not enable IP masquerading: %m"); |
| |
| address->ip_masquerade_done = masq; |
| } |
| |
| return 0; |
| } |
| |
| static int address_add_internal(Link *link, Set **addresses, |
| int family, |
| const union in_addr_union *in_addr, |
| unsigned char prefixlen, |
| Address **ret) { |
| _cleanup_address_free_ Address *address = NULL; |
| int r; |
| |
| assert(link); |
| assert(addresses); |
| assert(in_addr); |
| |
| r = address_new(&address); |
| if (r < 0) |
| return r; |
| |
| address->family = family; |
| address->in_addr = *in_addr; |
| address->prefixlen = prefixlen; |
| /* Consider address tentative until we get the real flags from the kernel */ |
| address->flags = IFA_F_TENTATIVE; |
| |
| r = set_ensure_allocated(addresses, &address_hash_ops); |
| if (r < 0) |
| return r; |
| |
| r = set_put(*addresses, address); |
| if (r < 0) |
| return r; |
| |
| address->link = link; |
| |
| if (ret) |
| *ret = address; |
| |
| address = NULL; |
| |
| return 0; |
| } |
| |
| int address_add_foreign(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) { |
| return address_add_internal(link, &link->addresses_foreign, family, in_addr, prefixlen, ret); |
| } |
| |
| int address_add(Link *link, int family, const union in_addr_union *in_addr, unsigned char prefixlen, Address **ret) { |
| Address *address; |
| int r; |
| |
| r = address_get(link, family, in_addr, prefixlen, &address); |
| if (r == -ENOENT) { |
| /* Address does not exist, create a new one */ |
| r = address_add_internal(link, &link->addresses, family, in_addr, prefixlen, &address); |
| if (r < 0) |
| return r; |
| } else if (r == 0) { |
| /* Take over a foreign address */ |
| r = set_ensure_allocated(&link->addresses, &address_hash_ops); |
| if (r < 0) |
| return r; |
| |
| r = set_put(link->addresses, address); |
| if (r < 0) |
| return r; |
| |
| set_remove(link->addresses_foreign, address); |
| } else if (r == 1) { |
| /* Already exists, do nothing */ |
| ; |
| } else |
| return r; |
| |
| if (ret) |
| *ret = address; |
| |
| return 0; |
| } |
| |
| static int address_release(Address *address) { |
| int r; |
| |
| assert(address); |
| assert(address->link); |
| |
| /* Remove masquerading firewall entry if it was added */ |
| if (address->ip_masquerade_done) { |
| union in_addr_union masked = address->in_addr; |
| in_addr_mask(address->family, &masked, address->prefixlen); |
| |
| r = fw_add_masquerade(false, AF_INET, 0, &masked, address->prefixlen, NULL, NULL, 0); |
| if (r < 0) |
| log_link_warning_errno(address->link, r, "Failed to disable IP masquerading: %m"); |
| |
| address->ip_masquerade_done = false; |
| } |
| |
| return 0; |
| } |
| |
| int address_update( |
| Address *address, |
| unsigned char flags, |
| unsigned char scope, |
| const struct ifa_cacheinfo *cinfo) { |
| |
| bool ready; |
| int r; |
| |
| assert(address); |
| assert(cinfo); |
| assert_return(address->link, 1); |
| |
| if (IN_SET(address->link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) |
| return 1; |
| |
| ready = address_is_ready(address); |
| |
| address->flags = flags; |
| address->scope = scope; |
| address->cinfo = *cinfo; |
| |
| link_update_operstate(address->link); |
| |
| if (!ready && address_is_ready(address)) { |
| link_check_ready(address->link); |
| |
| if (address->family == AF_INET6 && |
| in_addr_is_link_local(AF_INET6, &address->in_addr) > 0 && |
| in_addr_is_null(AF_INET6, (const union in_addr_union*) &address->link->ipv6ll_address) > 0) { |
| |
| r = link_ipv6ll_gained(address->link, &address->in_addr.in6); |
| if (r < 0) |
| return r; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int address_drop(Address *address) { |
| Link *link; |
| bool ready; |
| |
| assert(address); |
| |
| ready = address_is_ready(address); |
| link = address->link; |
| |
| address_release(address); |
| address_free(address); |
| |
| link_update_operstate(link); |
| |
| if (link && !ready) |
| link_check_ready(link); |
| |
| return 0; |
| } |
| |
| int address_get(Link *link, |
| int family, |
| const union in_addr_union *in_addr, |
| unsigned char prefixlen, |
| Address **ret) { |
| |
| Address address, *existing; |
| |
| assert(link); |
| assert(in_addr); |
| |
| address = (Address) { |
| .family = family, |
| .in_addr = *in_addr, |
| .prefixlen = prefixlen, |
| }; |
| |
| existing = set_get(link->addresses, &address); |
| if (existing) { |
| if (ret) |
| *ret = existing; |
| return 1; |
| } |
| |
| existing = set_get(link->addresses_foreign, &address); |
| if (existing) { |
| if (ret) |
| *ret = existing; |
| return 0; |
| } |
| |
| return -ENOENT; |
| } |
| |
| int address_remove( |
| Address *address, |
| Link *link, |
| sd_netlink_message_handler_t callback) { |
| |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_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) |
| return log_error_errno(r, "Could not allocate RTM_DELADDR message: %m"); |
| |
| r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); |
| if (r < 0) |
| return log_error_errno(r, "Could not set prefixlen: %m"); |
| |
| if (address->family == AF_INET) |
| r = sd_netlink_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); |
| else if (address->family == AF_INET6) |
| r = sd_netlink_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); |
| 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); |
| if (r < 0) |
| return log_error_errno(r, "Could not send rtnetlink message: %m"); |
| |
| link_ref(link); |
| |
| return 0; |
| } |
| |
| 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; |
| int r; |
| |
| assert(link); |
| assert(original); |
| assert(ret); |
| |
| /* Something useful was configured? just use it */ |
| if (in_addr_is_null(original->family, &original->in_addr) <= 0) |
| return 0; |
| |
| /* The address is configured to be 0.0.0.0 or [::] by the user? |
| * Then let's acquire something more useful from the pool. */ |
| r = manager_address_pool_acquire(link->manager, original->family, original->prefixlen, &in_addr); |
| if (r < 0) |
| return log_link_error_errno(link, r, "Failed to acquire address from pool: %m"); |
| if (r == 0) { |
| log_link_error(link, "Couldn't find free address for interface, all taken."); |
| return -EBUSY; |
| } |
| |
| if (original->family == AF_INET) { |
| /* Pick first address in range for ourselves ... */ |
| in_addr.in.s_addr = in_addr.in.s_addr | htobe32(1); |
| |
| /* .. and use last as broadcast address */ |
| broadcast.s_addr = in_addr.in.s_addr | htobe32(0xFFFFFFFFUL >> original->prefixlen); |
| } else if (original->family == AF_INET6) |
| in_addr.in6.s6_addr[15] |= 1; |
| |
| r = address_new(&na); |
| if (r < 0) |
| return r; |
| |
| na->family = original->family; |
| na->prefixlen = original->prefixlen; |
| na->scope = original->scope; |
| na->cinfo = original->cinfo; |
| |
| if (original->label) { |
| na->label = strdup(original->label); |
| if (!na->label) |
| return -ENOMEM; |
| } |
| |
| na->broadcast = broadcast; |
| na->in_addr = in_addr; |
| |
| LIST_PREPEND(addresses, link->pool_addresses, na); |
| |
| *ret = na; |
| na = NULL; |
| |
| return 0; |
| } |
| |
| int address_configure( |
| Address *address, |
| Link *link, |
| sd_netlink_message_handler_t callback, |
| bool update) { |
| |
| _cleanup_(sd_netlink_message_unrefp) sd_netlink_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); |
| |
| /* 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 && |
| set_size(link->addresses) >= ADDRESSES_PER_LINK_MAX) |
| return -E2BIG; |
| |
| r = address_acquire(link, address, &address); |
| if (r < 0) |
| return r; |
| |
| if (update) |
| r = sd_rtnl_message_new_addr_update(link->manager->rtnl, &req, |
| link->ifindex, address->family); |
| else |
| r = sd_rtnl_message_new_addr(link->manager->rtnl, &req, RTM_NEWADDR, |
| link->ifindex, address->family); |
| if (r < 0) |
| return log_error_errno(r, "Could not allocate RTM_NEWADDR message: %m"); |
| |
| r = sd_rtnl_message_addr_set_prefixlen(req, address->prefixlen); |
| if (r < 0) |
| return log_error_errno(r, "Could not set prefixlen: %m"); |
| |
| address->flags |= IFA_F_PERMANENT; |
| |
| r = sd_rtnl_message_addr_set_flags(req, (address->flags & 0xff)); |
| if (r < 0) |
| return log_error_errno(r, "Could not set flags: %m"); |
| |
| if (address->flags & ~0xff) { |
| r = sd_netlink_message_append_u32(req, IFA_FLAGS, address->flags); |
| if (r < 0) |
| return log_error_errno(r, "Could not set extended flags: %m"); |
| } |
| |
| r = sd_rtnl_message_addr_set_scope(req, address->scope); |
| if (r < 0) |
| return log_error_errno(r, "Could not set scope: %m"); |
| |
| if (address->family == AF_INET) |
| r = sd_netlink_message_append_in_addr(req, IFA_LOCAL, &address->in_addr.in); |
| else if (address->family == AF_INET6) |
| r = sd_netlink_message_append_in6_addr(req, IFA_LOCAL, &address->in_addr.in6); |
| if (r < 0) |
| return log_error_errno(r, "Could not append IFA_LOCAL attribute: %m"); |
| |
| if (!in_addr_is_null(address->family, &address->in_addr_peer)) { |
| if (address->family == AF_INET) |
| r = sd_netlink_message_append_in_addr(req, IFA_ADDRESS, &address->in_addr_peer.in); |
| else if (address->family == AF_INET6) |
| r = sd_netlink_message_append_in6_addr(req, IFA_ADDRESS, &address->in_addr_peer.in6); |
| if (r < 0) |
| return log_error_errno(r, "Could not append IFA_ADDRESS attribute: %m"); |
| } else { |
| if (address->family == AF_INET) { |
| r = sd_netlink_message_append_in_addr(req, IFA_BROADCAST, &address->broadcast); |
| if (r < 0) |
| return log_error_errno(r, "Could not append IFA_BROADCAST attribute: %m"); |
| } |
| } |
| |
| if (address->label) { |
| r = sd_netlink_message_append_string(req, IFA_LABEL, address->label); |
| if (r < 0) |
| return log_error_errno(r, "Could not append IFA_LABEL attribute: %m"); |
| } |
| |
| r = sd_netlink_message_append_cache_info(req, IFA_CACHEINFO, |
| &address->cinfo); |
| if (r < 0) |
| return log_error_errno(r, "Could not append IFA_CACHEINFO attribute: %m"); |
| |
| r = address_establish(address, link); |
| if (r < 0) |
| return r; |
| |
| r = sd_netlink_call_async(link->manager->rtnl, req, callback, link, 0, NULL); |
| if (r < 0) { |
| address_release(address); |
| return log_error_errno(r, "Could not send rtnetlink message: %m"); |
| } |
| |
| link_ref(link); |
| |
| r = address_add(link, address->family, &address->in_addr, address->prefixlen, NULL); |
| if (r < 0) { |
| address_release(address); |
| return log_error_errno(r, "Could not add address: %m"); |
| } |
| |
| return 0; |
| } |
| |
| int config_parse_broadcast( |
| 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) { |
| |
| Network *network = userdata; |
| _cleanup_address_free_ Address *n = NULL; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = address_new_static(network, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| if (n->family == AF_INET6) { |
| log_syntax(unit, LOG_ERR, filename, line, 0, "Broadcast is not valid for IPv6 addresses, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| r = in_addr_from_string(AF_INET, rvalue, (union in_addr_union*) &n->broadcast); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, "Broadcast is invalid, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| n->family = AF_INET; |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_address(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) { |
| |
| Network *network = userdata; |
| _cleanup_address_free_ Address *n = NULL; |
| const char *address, *e; |
| union in_addr_union buffer; |
| int r, f; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| if (streq(section, "Network")) { |
| /* we are not in an Address section, so treat |
| * this as the special '0' section */ |
| section_line = 0; |
| } |
| |
| r = address_new_static(network, section_line, &n); |
| if (r < 0) |
| 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); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, "Address is invalid, ignoring assignment: %s", address); |
| return 0; |
| } |
| |
| if (!e && f == AF_INET) { |
| r = in_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 can not 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); |
| return 0; |
| } |
| |
| n->family = f; |
| |
| if (streq(lvalue, "Address")) |
| n->in_addr = buffer; |
| else |
| n->in_addr_peer = buffer; |
| |
| if (n->family == AF_INET && n->broadcast.s_addr == 0) |
| n->broadcast.s_addr = n->in_addr.in.s_addr | htonl(0xfffffffflu >> n->prefixlen); |
| |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_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_free_ Address *n = NULL; |
| Network *network = userdata; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = address_new_static(network, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| if (!ifname_valid(rvalue)) { |
| log_syntax(unit, LOG_ERR, filename, line, 0, "Interface label is not valid or too long, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| r = free_and_strdup(&n->label, rvalue); |
| if (r < 0) |
| return log_oom(); |
| |
| n = NULL; |
| |
| return 0; |
| } |
| |
| int config_parse_lifetime(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) { |
| Network *network = userdata; |
| _cleanup_address_free_ Address *n = NULL; |
| unsigned k; |
| int r; |
| |
| assert(filename); |
| assert(section); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| r = address_new_static(network, section_line, &n); |
| if (r < 0) |
| return r; |
| |
| if (STR_IN_SET(rvalue, "forever", "infinity")) { |
| n->cinfo.ifa_prefered = CACHE_INFO_INFINITY_LIFE_TIME; |
| n = NULL; |
| |
| return 0; |
| } |
| |
| r = safe_atou(rvalue, &k); |
| if (r < 0) { |
| log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse PreferredLifetime, ignoring: %s", rvalue); |
| return 0; |
| } |
| |
| if (k != 0) |
| log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid PreferredLifetime value, ignoring: %d", k); |
| else { |
| n->cinfo.ifa_prefered = k; |
| n = NULL; |
| } |
| |
| return 0; |
| } |
| |
| bool address_is_ready(const Address *a) { |
| assert(a); |
| |
| return !(a->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED)); |
| } |