resolved: use DNS_{QUESTION|ANSWER}_FOREACH macros at two more places

[thirdparty/systemd.git] / src / resolve / resolved-manager.c

diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c
index 8dc78911438fecf8c8b9c32de2dc40610571a800..e8811fa1d8e30e19720a025312763748d228ba33 100644 (file)
--- a/src/resolve/resolved-manager.c
+++ b/src/resolve/resolved-manager.c
@@ -23,6 +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"
@@ -78,11 +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;
 
@@ -95,6 +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);
                 }
 
@@ -279,7 +281,7 @@ 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);
         }
@@ -466,6 +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;
@@ -526,6 +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;
@@ -584,6 +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);
 
@@ -1139,7 +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;
@@ -1153,6 +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;
@@ -1163,6 +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;
@@ -1234,3 +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);
+        }
+}