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authorLennart Poettering <lennart@poettering.net>2016-06-10 20:23:49 +0200
committerLennart Poettering <lennart@poettering.net>2016-06-10 23:26:53 +0200
commitbc81447ea556586b09226ce2d3fe375a7adc2c16 (patch)
tree4ca3eb8ee06a74c2c1a75bfa73dfdaa7e2cc742b /src
parente373507d2570fe474a09fd6e3836ead32dca912f (diff)
resolved: flush all caches if SIGUSR2 is received
Diffstat (limited to 'src')
-rw-r--r--src/resolve/resolved-manager.c17
-rw-r--r--src/resolve/resolved-manager.h1
-rw-r--r--src/resolve/resolved.c2
3 files changed, 19 insertions, 1 deletions
diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c
index 8dc7891143..6cf75f9183 100644
--- a/src/resolve/resolved-manager.c
+++ b/src/resolve/resolved-manager.c
@@ -466,6 +466,21 @@ 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;
+ DnsScope *scope;
+
+ assert(s);
+ assert(si);
+ assert(m);
+
+ LIST_FOREACH(scopes, scope, m->dns_scopes)
+ dns_cache_flush(&scope->cache);
+
+ log_info("Flushed all caches.");
+ return 0;
+}
+
int manager_new(Manager **ret) {
_cleanup_(manager_freep) Manager *m = NULL;
int r;
@@ -526,6 +541,7 @@ 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);
*ret = m;
m = NULL;
@@ -584,6 +600,7 @@ 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);
diff --git a/src/resolve/resolved-manager.h b/src/resolve/resolved-manager.h
index e82a824f29..97f75ace79 100644
--- a/src/resolve/resolved-manager.h
+++ b/src/resolve/resolved-manager.h
@@ -120,6 +120,7 @@ struct Manager {
sd_bus_slot *prepare_for_sleep_slot;
sd_event_source *sigusr1_event_source;
+ sd_event_source *sigusr2_event_source;
unsigned n_transactions_total;
unsigned n_dnssec_verdict[_DNSSEC_VERDICT_MAX];
diff --git a/src/resolve/resolved.c b/src/resolve/resolved.c
index 6cef401870..3a47b82d8a 100644
--- a/src/resolve/resolved.c
+++ b/src/resolve/resolved.c
@@ -71,7 +71,7 @@ int main(int argc, char *argv[]) {
if (r < 0)
goto finish;
- assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGUSR1, -1) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGUSR1, SIGUSR2, -1) >= 0);
r = manager_new(&m);
if (r < 0) {