fd373593ba
We'd store every 0.0.0.0 and ::0 entry as a structure without any addresses allocated. This is a somewhat common use case, let's optimize it a bit. This gives some memory savings and a bit faster response time too: 'time build/test-resolved-etc-hosts hosts' goes from 7.7s to 5.6s, and memory use as reported by valgrind for ~10000 hosts is reduced ==18097== total heap usage: 29,902 allocs, 29,902 frees, 2,136,437 bytes allocated ==18240== total heap usage: 19,955 allocs, 19,955 frees, 1,556,021 bytes allocated Also rename 'suppress' to 'found' (with reverse meaning). I think this makes the intent clearer.
185 lines
5.1 KiB
C
185 lines
5.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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#include "sd-event.h"
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#include "sd-netlink.h"
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#include "sd-network.h"
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#include "hashmap.h"
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#include "list.h"
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#include "ordered-set.h"
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#include "resolve-util.h"
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typedef struct Manager Manager;
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#include "resolved-conf.h"
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#include "resolved-dns-query.h"
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#include "resolved-dns-search-domain.h"
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#include "resolved-dns-server.h"
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#include "resolved-dns-stream.h"
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#include "resolved-dns-trust-anchor.h"
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#include "resolved-link.h"
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#define MANAGER_SEARCH_DOMAINS_MAX 32
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#define MANAGER_DNS_SERVERS_MAX 32
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typedef struct EtcHosts {
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Hashmap *by_address;
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Hashmap *by_name;
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Set *no_address;
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} EtcHosts;
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struct Manager {
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sd_event *event;
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ResolveSupport llmnr_support;
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ResolveSupport mdns_support;
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DnssecMode dnssec_mode;
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DnsOverTlsMode dns_over_tls_mode;
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bool enable_cache;
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DnsStubListenerMode dns_stub_listener_mode;
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/* Network */
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Hashmap *links;
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sd_netlink *rtnl;
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sd_event_source *rtnl_event_source;
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sd_network_monitor *network_monitor;
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sd_event_source *network_event_source;
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/* DNS query management */
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Hashmap *dns_transactions;
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LIST_HEAD(DnsQuery, dns_queries);
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unsigned n_dns_queries;
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LIST_HEAD(DnsStream, dns_streams);
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unsigned n_dns_streams;
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/* Unicast dns */
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LIST_HEAD(DnsServer, dns_servers);
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LIST_HEAD(DnsServer, fallback_dns_servers);
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unsigned n_dns_servers; /* counts both main and fallback */
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DnsServer *current_dns_server;
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LIST_HEAD(DnsSearchDomain, search_domains);
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unsigned n_search_domains;
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bool need_builtin_fallbacks:1;
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bool read_resolv_conf:1;
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usec_t resolv_conf_mtime;
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DnsTrustAnchor trust_anchor;
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LIST_HEAD(DnsScope, dns_scopes);
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DnsScope *unicast_scope;
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/* LLMNR */
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int llmnr_ipv4_udp_fd;
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int llmnr_ipv6_udp_fd;
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int llmnr_ipv4_tcp_fd;
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int llmnr_ipv6_tcp_fd;
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sd_event_source *llmnr_ipv4_udp_event_source;
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sd_event_source *llmnr_ipv6_udp_event_source;
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sd_event_source *llmnr_ipv4_tcp_event_source;
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sd_event_source *llmnr_ipv6_tcp_event_source;
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/* mDNS */
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int mdns_ipv4_fd;
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int mdns_ipv6_fd;
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/* DNS-SD */
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Hashmap *dnssd_services;
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sd_event_source *mdns_ipv4_event_source;
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sd_event_source *mdns_ipv6_event_source;
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/* dbus */
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sd_bus *bus;
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/* The hostname we publish on LLMNR and mDNS */
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char *full_hostname;
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char *llmnr_hostname;
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char *mdns_hostname;
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DnsResourceKey *llmnr_host_ipv4_key;
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DnsResourceKey *llmnr_host_ipv6_key;
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DnsResourceKey *mdns_host_ipv4_key;
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DnsResourceKey *mdns_host_ipv6_key;
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/* Watch the system hostname */
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int hostname_fd;
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sd_event_source *hostname_event_source;
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sd_event_source *sigusr1_event_source;
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sd_event_source *sigusr2_event_source;
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sd_event_source *sigrtmin1_event_source;
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unsigned n_transactions_total;
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unsigned n_dnssec_verdict[_DNSSEC_VERDICT_MAX];
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/* Data from /etc/hosts */
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EtcHosts etc_hosts;
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usec_t etc_hosts_last, etc_hosts_mtime;
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bool read_etc_hosts;
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/* Local DNS stub on 127.0.0.53:53 */
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int dns_stub_udp_fd;
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int dns_stub_tcp_fd;
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sd_event_source *dns_stub_udp_event_source;
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sd_event_source *dns_stub_tcp_event_source;
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Hashmap *polkit_registry;
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};
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/* Manager */
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int manager_new(Manager **ret);
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Manager* manager_free(Manager *m);
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int manager_start(Manager *m);
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uint32_t manager_find_mtu(Manager *m);
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int manager_write(Manager *m, int fd, DnsPacket *p);
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int manager_send(Manager *m, int fd, int ifindex, int family, const union in_addr_union *destination, uint16_t port, const union in_addr_union *source, DnsPacket *p);
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int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret);
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int manager_find_ifindex(Manager *m, int family, const union in_addr_union *in_addr);
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LinkAddress* manager_find_link_address(Manager *m, int family, const union in_addr_union *in_addr);
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void manager_refresh_rrs(Manager *m);
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int manager_next_hostname(Manager *m);
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bool manager_our_packet(Manager *m, DnsPacket *p);
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DnsScope* manager_find_scope(Manager *m, DnsPacket *p);
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void manager_verify_all(Manager *m);
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DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free);
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#define EXTRA_CMSG_SPACE 1024
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int manager_is_own_hostname(Manager *m, const char *name);
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int manager_compile_dns_servers(Manager *m, OrderedSet **servers);
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int manager_compile_search_domains(Manager *m, OrderedSet **domains, int filter_route);
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DnssecMode manager_get_dnssec_mode(Manager *m);
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bool manager_dnssec_supported(Manager *m);
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DnsOverTlsMode manager_get_dns_over_tls_mode(Manager *m);
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void manager_dnssec_verdict(Manager *m, DnssecVerdict verdict, const DnsResourceKey *key);
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bool manager_routable(Manager *m, int family);
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void manager_flush_caches(Manager *m);
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void manager_reset_server_features(Manager *m);
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void manager_cleanup_saved_user(Manager *m);
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bool manager_next_dnssd_names(Manager *m);
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