X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=src%2Fresolve%2Fresolved-manager.c;h=e8811fa1d8e30e19720a025312763748d228ba33;hb=2a3900d7e484faefb14fd868d5c17ae2e7b2f21f;hp=f1dbda1a6a695bd86d760b9760e9bb6dd7a0754c;hpb=011696f76233486bc56c266b18a328924f70269c;p=thirdparty%2Fsystemd.git diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c index f1dbda1a6a6..e8811fa1d8e 100644 --- a/src/resolve/resolved-manager.c +++ b/src/resolve/resolved-manager.c @@ -1,5 +1,3 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - /*** This file is part of systemd. @@ -25,6 +23,7 @@ #include "af-list.h" #include "alloc-util.h" +#include "dirent-util.h" #include "dns-domain.h" #include "fd-util.h" #include "fileio-label.h" @@ -80,11 +79,11 @@ static int manager_process_link(sd_netlink *rtnl, sd_netlink_message *mm, void * goto fail; } - r = link_update_rtnl(l, mm); + r = link_process_rtnl(l, mm); if (r < 0) goto fail; - r = link_update_monitor(l); + r = link_update(l); if (r < 0) goto fail; @@ -97,6 +96,7 @@ static int manager_process_link(sd_netlink *rtnl, sd_netlink_message *mm, void * case RTM_DELLINK: if (l) { log_debug("Removing link %i/%s", l->ifindex, l->name); + link_remove_user(l); link_free(l); } @@ -281,14 +281,12 @@ static int on_network_event(sd_event_source *s, int fd, uint32_t revents, void * sd_network_monitor_flush(m->network_monitor); HASHMAP_FOREACH(l, m->links, i) { - r = link_update_monitor(l); + r = link_update(l); if (r < 0) log_warning_errno(r, "Failed to update monitor information for %i: %m", l->ifindex); } - r = manager_write_resolv_conf(m); - if (r < 0) - log_warning_errno(r, "Could not update "PRIVATE_RESOLV_CONF": %m"); + (void) manager_write_resolv_conf(m); return 0; } @@ -470,6 +468,18 @@ static int manager_sigusr1(sd_event_source *s, const struct signalfd_siginfo *si return 0; } +static int manager_sigusr2(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { + Manager *m = userdata; + + assert(s); + assert(si); + assert(m); + + manager_flush_caches(m); + + return 0; +} + int manager_new(Manager **ret) { _cleanup_(manager_freep) Manager *m = NULL; int r; @@ -487,7 +497,7 @@ int manager_new(Manager **ret) { m->llmnr_support = RESOLVE_SUPPORT_YES; m->mdns_support = RESOLVE_SUPPORT_NO; - m->dnssec_mode = DNSSEC_NO; + m->dnssec_mode = DEFAULT_DNSSEC_MODE; m->read_resolv_conf = true; m->need_builtin_fallbacks = true; m->etc_hosts_last = m->etc_hosts_mtime = USEC_INFINITY; @@ -530,6 +540,9 @@ int manager_new(Manager **ret) { return r; (void) sd_event_add_signal(m->event, &m->sigusr1_event_source, SIGUSR1, manager_sigusr1, m); + (void) sd_event_add_signal(m->event, &m->sigusr2_event_source, SIGUSR2, manager_sigusr2, m); + + manager_cleanup_saved_user(m); *ret = m; m = NULL; @@ -588,6 +601,7 @@ Manager *manager_free(Manager *m) { sd_bus_unref(m->bus); sd_event_source_unref(m->sigusr1_event_source); + sd_event_source_unref(m->sigusr2_event_source); sd_event_unref(m->event); @@ -619,18 +633,16 @@ int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret) { struct msghdr mh = {}; struct cmsghdr *cmsg; struct iovec iov; - int ms = 0, r; - ssize_t l; + ssize_t ms, l; + int r; assert(m); assert(fd >= 0); assert(ret); - r = ioctl(fd, FIONREAD, &ms); - if (r < 0) - return -errno; + ms = next_datagram_size_fd(fd); if (ms < 0) - return -EIO; + return ms; r = dns_packet_new(&p, protocol, ms); if (r < 0) @@ -647,6 +659,8 @@ int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret) { mh.msg_controllen = sizeof(control); l = recvmsg(fd, &mh, 0); + if (l == 0) + return 0; if (l < 0) { if (errno == EAGAIN || errno == EINTR) return 0; @@ -654,9 +668,6 @@ int manager_recv(Manager *m, int fd, DnsProtocol protocol, DnsPacket **ret) { return -errno; } - if (l <= 0) - return -EIO; - assert(!(mh.msg_flags & MSG_CTRUNC)); assert(!(mh.msg_flags & MSG_TRUNC)); @@ -908,7 +919,7 @@ int manager_send(Manager *m, int fd, int ifindex, int family, const union in_add if (family == AF_INET) return manager_ipv4_send(m, fd, ifindex, &addr->in, port, p); - else if (family == AF_INET6) + if (family == AF_INET6) return manager_ipv6_send(m, fd, ifindex, &addr->in6, port, p); return -EAFNOSUPPORT; @@ -1146,7 +1157,7 @@ int manager_compile_dns_servers(Manager *m, OrderedSet **dns) { return 0; } -int manager_compile_search_domains(Manager *m, OrderedSet **domains) { +int manager_compile_search_domains(Manager *m, OrderedSet **domains, int filter_route) { DnsSearchDomain *d; Iterator i; Link *l; @@ -1160,6 +1171,11 @@ int manager_compile_search_domains(Manager *m, OrderedSet **domains) { return r; LIST_FOREACH(domains, d, m->search_domains) { + + if (filter_route >= 0 && + d->route_only != !!filter_route) + continue; + r = ordered_set_put(*domains, d->name); if (r == -EEXIST) continue; @@ -1170,6 +1186,11 @@ int manager_compile_search_domains(Manager *m, OrderedSet **domains) { HASHMAP_FOREACH(l, m->links, i) { LIST_FOREACH(domains, d, l->search_domains) { + + if (filter_route >= 0 && + d->route_only != !!filter_route) + continue; + r = ordered_set_put(*domains, d->name); if (r == -EEXIST) continue; @@ -1217,11 +1238,11 @@ void manager_dnssec_verdict(Manager *m, DnssecVerdict verdict, const DnsResource assert(verdict < _DNSSEC_VERDICT_MAX); if (log_get_max_level() >= LOG_DEBUG) { - _cleanup_free_ char *s = NULL; - - (void) dns_resource_key_to_string(key, &s); + char s[DNS_RESOURCE_KEY_STRING_MAX]; - log_debug("Found verdict for lookup %s: %s", s ? strstrip(s) : "n/a", dnssec_verdict_to_string(verdict)); + log_debug("Found verdict for lookup %s: %s", + dns_resource_key_to_string(key, s, sizeof s), + dnssec_verdict_to_string(verdict)); } m->n_dnssec_verdict[verdict]++; @@ -1241,3 +1262,69 @@ bool manager_routable(Manager *m, int family) { return false; } + +void manager_flush_caches(Manager *m) { + DnsScope *scope; + + assert(m); + + LIST_FOREACH(scopes, scope, m->dns_scopes) + dns_cache_flush(&scope->cache); + + log_info("Flushed all caches."); +} + +void manager_cleanup_saved_user(Manager *m) { + _cleanup_closedir_ DIR *d = NULL; + struct dirent *de; + int r; + + assert(m); + + /* Clean up all saved per-link files in /run/systemd/resolve/netif/ that don't have a matching interface + * anymore. These files are created to persist settings pushed in by the user via the bus, so that resolved can + * be restarted without losing this data. */ + + d = opendir("/run/systemd/resolve/netif/"); + if (!d) { + if (errno == ENOENT) + return; + + log_warning_errno(errno, "Failed to open interface directory: %m"); + return; + } + + FOREACH_DIRENT_ALL(de, d, log_error_errno(errno, "Failed to read interface directory: %m")) { + _cleanup_free_ char *p = NULL; + int ifindex; + Link *l; + + if (!IN_SET(de->d_type, DT_UNKNOWN, DT_REG)) + continue; + + if (STR_IN_SET(de->d_name, ".", "..")) + continue; + + r = parse_ifindex(de->d_name, &ifindex); + if (r < 0) /* Probably some temporary file from a previous run. Delete it */ + goto rm; + + l = hashmap_get(m->links, INT_TO_PTR(ifindex)); + if (!l) /* link vanished */ + goto rm; + + if (l->is_managed) /* now managed by networkd, hence the bus settings are useless */ + goto rm; + + continue; + + rm: + p = strappend("/run/systemd/resolve/netif/", de->d_name); + if (!p) { + log_oom(); + return; + } + + (void) unlink(p); + } +}