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-rw-r--r--src/resolve/resolved-bus.c16
-rw-r--r--src/resolve/resolved-dns-cache.c81
-rw-r--r--src/resolve/resolved-dns-cache.h3
-rw-r--r--src/resolve/resolved-dns-packet.h27
-rw-r--r--src/resolve/resolved-dns-query.c8
-rw-r--r--src/resolve/resolved-dns-scope.c91
-rw-r--r--src/resolve/resolved-dns-scope.h4
-rw-r--r--src/resolve/resolved-dns-transaction.c64
-rw-r--r--src/resolve/resolved-dns-transaction.h6
-rw-r--r--src/resolve/resolved-dns-zone.c37
-rw-r--r--src/resolve/resolved-dns-zone.h3
-rw-r--r--src/resolve/resolved-manager.c31
-rw-r--r--src/resolve/resolved-manager.h2
-rw-r--r--src/resolve/resolved.c2
14 files changed, 278 insertions, 97 deletions
diff --git a/src/resolve/resolved-bus.c b/src/resolve/resolved-bus.c
index 1f23834ce3..12c17003e9 100644
--- a/src/resolve/resolved-bus.c
+++ b/src/resolve/resolved-bus.c
@@ -226,10 +226,6 @@ static void bus_method_resolve_hostname_complete(DnsQuery *q) {
* query, this time with the cname */
if (added <= 0) {
r = dns_query_go(q);
- if (r == -ESRCH) {
- r = sd_bus_reply_method_errorf(q->request, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
- goto finish;
- }
if (r < 0) {
r = sd_bus_reply_method_errno(q->request, -r, NULL);
goto finish;
@@ -346,10 +342,6 @@ static int bus_method_resolve_hostname(sd_bus_message *message, void *userdata,
r = dns_query_go(q);
if (r < 0) {
dns_query_free(q);
-
- if (r == -ESRCH)
- sd_bus_error_setf(error, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
-
return r;
}
@@ -494,10 +486,6 @@ static int bus_method_resolve_address(sd_bus_message *message, void *userdata, s
r = dns_query_go(q);
if (r < 0) {
dns_query_free(q);
-
- if (r == -ESRCH)
- sd_bus_error_setf(error, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
-
return r;
}
@@ -647,10 +635,6 @@ static int bus_method_resolve_record(sd_bus_message *message, void *userdata, sd
r = dns_query_go(q);
if (r < 0) {
dns_query_free(q);
-
- if (r == -ESRCH)
- sd_bus_error_setf(error, BUS_ERROR_NO_NAME_SERVERS, "No appropriate name servers or networks for name found");
-
return r;
}
diff --git a/src/resolve/resolved-dns-cache.c b/src/resolve/resolved-dns-cache.c
index efc407dbc6..ef6b69c768 100644
--- a/src/resolve/resolved-dns-cache.c
+++ b/src/resolve/resolved-dns-cache.c
@@ -411,16 +411,17 @@ int dns_cache_put(
int owner_family,
const union in_addr_union *owner_address) {
- unsigned i;
+ unsigned cache_keys, i;
int r;
assert(c);
- assert(q);
- /* First, delete all matching old RRs, so that we only keep
- * complete by_key in place. */
- for (i = 0; i < q->n_keys; i++)
- dns_cache_remove(c, q->keys[i]);
+ if (q) {
+ /* First, if we were passed a question, delete all matching old RRs,
+ * so that we only keep complete by_key in place. */
+ for (i = 0; i < q->n_keys; i++)
+ dns_cache_remove(c, q->keys[i]);
+ }
if (!answer)
return 0;
@@ -435,8 +436,13 @@ int dns_cache_put(
if (!IN_SET(rcode, DNS_RCODE_SUCCESS, DNS_RCODE_NXDOMAIN))
return 0;
+ cache_keys = answer->n_rrs;
+
+ if (q)
+ cache_keys += q->n_keys;
+
/* Make some space for our new entries */
- dns_cache_make_space(c, answer->n_rrs + q->n_keys);
+ dns_cache_make_space(c, cache_keys);
if (timestamp <= 0)
timestamp = now(clock_boottime_or_monotonic());
@@ -448,6 +454,9 @@ int dns_cache_put(
goto fail;
}
+ if (!q)
+ return 0;
+
/* Third, add in negative entries for all keys with no RR */
for (i = 0; i < q->n_keys; i++) {
DnsResourceRecord *soa = NULL;
@@ -479,8 +488,11 @@ fail:
/* Adding all RRs failed. Let's clean up what we already
* added, just in case */
- for (i = 0; i < q->n_keys; i++)
- dns_cache_remove(c, q->keys[i]);
+ if (q) {
+ for (i = 0; i < q->n_keys; i++)
+ dns_cache_remove(c, q->keys[i]);
+ }
+
for (i = 0; i < answer->n_rrs; i++)
dns_cache_remove(c, answer->items[i].rr->key);
@@ -608,3 +620,54 @@ int dns_cache_check_conflicts(DnsCache *cache, DnsResourceRecord *rr, int owner_
/* There's a conflict */
return 1;
}
+
+void dns_cache_dump(DnsCache *cache, FILE *f) {
+ Iterator iterator;
+ DnsCacheItem *i;
+ int r;
+
+ if (!cache)
+ return;
+
+ if (!f)
+ f = stdout;
+
+ HASHMAP_FOREACH(i, cache->by_key, iterator) {
+ DnsCacheItem *j;
+
+ LIST_FOREACH(by_key, j, i) {
+ _cleanup_free_ char *t = NULL;
+
+ fputc('\t', f);
+
+ if (j->rr) {
+ r = dns_resource_record_to_string(j->rr, &t);
+ if (r < 0) {
+ log_oom();
+ continue;
+ }
+
+ fputs(t, f);
+ fputc('\n', f);
+ } else {
+ r = dns_resource_key_to_string(j->key, &t);
+ if (r < 0) {
+ log_oom();
+ continue;
+ }
+
+ fputs(t, f);
+ fputs(" -- ", f);
+ fputs(j->type == DNS_CACHE_NODATA ? "NODATA" : "NXDOMAIN", f);
+ fputc('\n', f);
+ }
+ }
+ }
+}
+
+bool dns_cache_is_empty(DnsCache *cache) {
+ if (!cache)
+ return true;
+
+ return hashmap_isempty(cache->by_key);
+}
diff --git a/src/resolve/resolved-dns-cache.h b/src/resolve/resolved-dns-cache.h
index fd583a775f..1225e58de4 100644
--- a/src/resolve/resolved-dns-cache.h
+++ b/src/resolve/resolved-dns-cache.h
@@ -43,3 +43,6 @@ int dns_cache_put(DnsCache *c, DnsQuestion *q, int rcode, DnsAnswer *answer, uns
int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **answer);
int dns_cache_check_conflicts(DnsCache *cache, DnsResourceRecord *rr, int owner_family, const union in_addr_union *owner_address);
+
+void dns_cache_dump(DnsCache *cache, FILE *f);
+bool dns_cache_is_empty(DnsCache *cache);
diff --git a/src/resolve/resolved-dns-packet.h b/src/resolve/resolved-dns-packet.h
index e81f8a8202..5628e579ad 100644
--- a/src/resolve/resolved-dns-packet.h
+++ b/src/resolve/resolved-dns-packet.h
@@ -121,15 +121,15 @@ static inline uint8_t* DNS_PACKET_DATA(DnsPacket *p) {
#define DNS_PACKET_ARCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->arcount)
#define DNS_PACKET_MAKE_FLAGS(qr, opcode, aa, tc, rd, ra, ad, cd, rcode) \
- (((uint16_t) !!qr << 15) | \
- ((uint16_t) (opcode & 15) << 11) | \
- ((uint16_t) !!aa << 10) | \
- ((uint16_t) !!tc << 9) | \
- ((uint16_t) !!rd << 8) | \
- ((uint16_t) !!ra << 7) | \
- ((uint16_t) !!ad << 5) | \
- ((uint16_t) !!cd << 4) | \
- ((uint16_t) (rcode & 15)))
+ (((uint16_t) !!(qr) << 15) | \
+ ((uint16_t) ((opcode) & 15) << 11) | \
+ ((uint16_t) !!(aa) << 10) | /* on LLMNR: c */ \
+ ((uint16_t) !!(tc) << 9) | \
+ ((uint16_t) !!(rd) << 8) | /* on LLMNR: t */ \
+ ((uint16_t) !!(ra) << 7) | \
+ ((uint16_t) !!(ad) << 5) | \
+ ((uint16_t) !!(cd) << 4) | \
+ ((uint16_t) ((rcode) & 15)))
static inline unsigned DNS_PACKET_RRCOUNT(DnsPacket *p) {
return
@@ -239,11 +239,16 @@ static inline uint64_t SD_RESOLVED_FLAGS_MAKE(DnsProtocol protocol, int family)
/* Converts a protocol + family into a flags field as used in queries */
- if (protocol == DNS_PROTOCOL_DNS)
+ switch (protocol) {
+ case DNS_PROTOCOL_DNS:
return SD_RESOLVED_DNS;
- if (protocol == DNS_PROTOCOL_LLMNR)
+ case DNS_PROTOCOL_LLMNR:
return family == AF_INET6 ? SD_RESOLVED_LLMNR_IPV6 : SD_RESOLVED_LLMNR_IPV4;
+ default:
+ break;
+ }
+
return 0;
}
diff --git a/src/resolve/resolved-dns-query.c b/src/resolve/resolved-dns-query.c
index d9f5b342b2..c0b4c8ba81 100644
--- a/src/resolve/resolved-dns-query.c
+++ b/src/resolve/resolved-dns-query.c
@@ -651,12 +651,8 @@ int dns_query_go(DnsQuery *q) {
DnsTransactionState state = DNS_TRANSACTION_NO_SERVERS;
dns_query_synthesize_reply(q, &state);
- if (state != DNS_TRANSACTION_NO_SERVERS) {
- dns_query_complete(q, state);
- return 1;
- }
-
- return -ESRCH;
+ dns_query_complete(q, state);
+ return 1;
}
r = dns_query_add_transaction_split(q, first);
diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c
index 57a2c7d6c1..9e6f595a1b 100644
--- a/src/resolve/resolved-dns-scope.c
+++ b/src/resolve/resolved-dns-scope.c
@@ -78,8 +78,7 @@ DnsScope* dns_scope_free(DnsScope *s) {
dns_scope_llmnr_membership(s, false);
- while ((t = s->transactions)) {
-
+ while ((t = hashmap_steal_first(s->transactions))) {
/* Abort the transaction, but make sure it is not
* freed while we still look at it */
@@ -90,6 +89,8 @@ DnsScope* dns_scope_free(DnsScope *s) {
dns_transaction_free(t);
}
+ hashmap_free(s->transactions);
+
while ((rr = ordered_hashmap_steal_first(s->conflict_queue)))
dns_resource_record_unref(rr);
@@ -165,7 +166,8 @@ int dns_scope_emit(DnsScope *s, int fd, DnsPacket *p) {
} else
mtu = manager_find_mtu(s->manager);
- if (s->protocol == DNS_PROTOCOL_DNS) {
+ switch (s->protocol) {
+ case DNS_PROTOCOL_DNS:
if (DNS_PACKET_QDCOUNT(p) > 1)
return -EOPNOTSUPP;
@@ -179,8 +181,9 @@ int dns_scope_emit(DnsScope *s, int fd, DnsPacket *p) {
if (r < 0)
return r;
- } else if (s->protocol == DNS_PROTOCOL_LLMNR) {
+ break;
+ case DNS_PROTOCOL_LLMNR:
if (DNS_PACKET_QDCOUNT(p) > 1)
return -EOPNOTSUPP;
@@ -204,8 +207,12 @@ int dns_scope_emit(DnsScope *s, int fd, DnsPacket *p) {
r = manager_send(s->manager, fd, ifindex, family, &addr, port, p);
if (r < 0)
return r;
- } else
+
+ break;
+
+ default:
return -EAFNOSUPPORT;
+ }
return 1;
}
@@ -340,16 +347,16 @@ DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, co
if (dns_name_endswith(domain, *i) > 0)
return DNS_SCOPE_YES;
- if (s->protocol == DNS_PROTOCOL_DNS) {
+ switch (s->protocol) {
+ case DNS_PROTOCOL_DNS:
if (dns_name_endswith(domain, "254.169.in-addr.arpa") == 0 &&
dns_name_endswith(domain, "0.8.e.f.ip6.arpa") == 0 &&
dns_name_single_label(domain) == 0)
return DNS_SCOPE_MAYBE;
return DNS_SCOPE_NO;
- }
- if (s->protocol == DNS_PROTOCOL_MDNS) {
+ case DNS_PROTOCOL_MDNS:
if ((s->family == AF_INET && dns_name_endswith(domain, "in-addr.arpa") > 0) ||
(s->family == AF_INET6 && dns_name_endswith(domain, "ip6.arpa") > 0) ||
(dns_name_endswith(domain, "local") > 0 && /* only resolve names ending in .local via mDNS */
@@ -358,9 +365,8 @@ DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, co
return DNS_SCOPE_MAYBE;
return DNS_SCOPE_NO;
- }
- if (s->protocol == DNS_PROTOCOL_LLMNR) {
+ case DNS_PROTOCOL_LLMNR:
if ((s->family == AF_INET && dns_name_endswith(domain, "in-addr.arpa") > 0) ||
(s->family == AF_INET6 && dns_name_endswith(domain, "ip6.arpa") > 0) ||
(dns_name_single_label(domain) > 0 && /* only resolve single label names via LLMNR */
@@ -369,9 +375,10 @@ DnsScopeMatch dns_scope_good_domain(DnsScope *s, int ifindex, uint64_t flags, co
return DNS_SCOPE_MAYBE;
return DNS_SCOPE_NO;
- }
- assert_not_reached("Unknown scope protocol");
+ default:
+ assert_not_reached("Unknown scope protocol");
+ }
}
int dns_scope_good_key(DnsScope *s, DnsResourceKey *key) {
@@ -623,24 +630,20 @@ DnsTransaction *dns_scope_find_transaction(DnsScope *scope, DnsResourceKey *key,
assert(scope);
assert(key);
- /* Try to find an ongoing transaction that is a equal or a
- * superset of the specified question */
-
- LIST_FOREACH(transactions_by_scope, t, scope->transactions) {
-
- /* Refuse reusing transactions that completed based on
- * cached data instead of a real packet, if that's
- * requested. */
- if (!cache_ok &&
- IN_SET(t->state, DNS_TRANSACTION_SUCCESS, DNS_TRANSACTION_FAILURE) &&
- !t->received)
- continue;
+ /* Try to find an ongoing transaction that is a equal to the
+ * specified question */
+ t = hashmap_get(scope->transactions, key);
+ if (!t)
+ return NULL;
- if (dns_resource_key_equal(t->key, key) > 0)
- return t;
- }
+ /* Refuse reusing transactions that completed based on cached
+ * data instead of a real packet, if that's requested. */
+ if (!cache_ok &&
+ IN_SET(t->state, DNS_TRANSACTION_SUCCESS, DNS_TRANSACTION_FAILURE) &&
+ !t->received)
+ return NULL;
- return NULL;
+ return t;
}
static int dns_scope_make_conflict_packet(
@@ -809,3 +812,35 @@ void dns_scope_check_conflicts(DnsScope *scope, DnsPacket *p) {
dns_scope_notify_conflict(scope, p->answer->items[i].rr);
}
}
+
+void dns_scope_dump(DnsScope *s, FILE *f) {
+ assert(s);
+
+ if (!f)
+ f = stdout;
+
+ fputs("[Scope protocol=", f);
+ fputs(dns_protocol_to_string(s->protocol), f);
+
+ if (s->link) {
+ fputs(" interface=", f);
+ fputs(s->link->name, f);
+ }
+
+ if (s->family != AF_UNSPEC) {
+ fputs(" family=", f);
+ fputs(af_to_name(s->family), f);
+ }
+
+ fputs("]\n", f);
+
+ if (!dns_zone_is_empty(&s->zone)) {
+ fputs("ZONE:\n", f);
+ dns_zone_dump(&s->zone, f);
+ }
+
+ if (!dns_cache_is_empty(&s->cache)) {
+ fputs("CACHE:\n", f);
+ dns_cache_dump(&s->cache, f);
+ }
+}
diff --git a/src/resolve/resolved-dns-scope.h b/src/resolve/resolved-dns-scope.h
index 47f285db47..b75f212897 100644
--- a/src/resolve/resolved-dns-scope.h
+++ b/src/resolve/resolved-dns-scope.h
@@ -60,7 +60,7 @@ struct DnsScope {
usec_t resend_timeout;
usec_t max_rtt;
- LIST_HEAD(DnsTransaction, transactions);
+ Hashmap *transactions;
LIST_FIELDS(DnsScope, scopes);
};
@@ -89,3 +89,5 @@ DnsTransaction *dns_scope_find_transaction(DnsScope *scope, DnsResourceKey *key,
int dns_scope_notify_conflict(DnsScope *scope, DnsResourceRecord *rr);
void dns_scope_check_conflicts(DnsScope *scope, DnsPacket *p);
+
+void dns_scope_dump(DnsScope *s, FILE *f);
diff --git a/src/resolve/resolved-dns-transaction.c b/src/resolve/resolved-dns-transaction.c
index 81156dfa45..8092bb514d 100644
--- a/src/resolve/resolved-dns-transaction.c
+++ b/src/resolve/resolved-dns-transaction.c
@@ -35,24 +35,25 @@ DnsTransaction* dns_transaction_free(DnsTransaction *t) {
sd_event_source_unref(t->timeout_event_source);
- dns_resource_key_unref(t->key);
dns_packet_unref(t->sent);
dns_packet_unref(t->received);
dns_answer_unref(t->cached);
- sd_event_source_unref(t->dns_event_source);
- safe_close(t->dns_fd);
+ sd_event_source_unref(t->dns_udp_event_source);
+ safe_close(t->dns_udp_fd);
dns_server_unref(t->server);
dns_stream_free(t->stream);
if (t->scope) {
- LIST_REMOVE(transactions_by_scope, t->scope->transactions, t);
+ hashmap_remove(t->scope->transactions, t->key);
if (t->id != 0)
hashmap_remove(t->scope->manager->dns_transactions, UINT_TO_PTR(t->id));
}
+ dns_resource_key_unref(t->key);
+
while ((q = set_steal_first(t->queries)))
set_remove(q->transactions, t);
set_free(t->queries);
@@ -89,14 +90,18 @@ int dns_transaction_new(DnsTransaction **ret, DnsScope *s, DnsResourceKey *key)
if (r < 0)
return r;
+ r = hashmap_ensure_allocated(&s->transactions, &dns_resource_key_hash_ops);
+ if (r < 0)
+ return r;
+
t = new0(DnsTransaction, 1);
if (!t)
return -ENOMEM;
- t->dns_fd = -1;
-
+ t->dns_udp_fd = -1;
t->key = dns_resource_key_ref(key);
+ /* Find a fresh, unused transaction id */
do
random_bytes(&t->id, sizeof(t->id));
while (t->id == 0 ||
@@ -108,7 +113,12 @@ int dns_transaction_new(DnsTransaction **ret, DnsScope *s, DnsResourceKey *key)
return r;
}
- LIST_PREPEND(transactions_by_scope, s->transactions, t);
+ r = hashmap_put(s->transactions, t->key, t);
+ if (r < 0) {
+ hashmap_remove(s->manager->dns_transactions, UINT_TO_PTR(t->id));
+ return r;
+ }
+
t->scope = s;
if (ret)
@@ -176,9 +186,6 @@ void dns_transaction_complete(DnsTransaction *t, DnsTransactionState state) {
assert(t);
assert(!IN_SET(state, DNS_TRANSACTION_NULL, DNS_TRANSACTION_PENDING));
- if (!IN_SET(t->state, DNS_TRANSACTION_NULL, DNS_TRANSACTION_PENDING))
- return;
-
/* Note that this call might invalidate the query. Callers
* should hence not attempt to access the query or transaction
* after calling this function. */
@@ -253,10 +260,12 @@ static int dns_transaction_open_tcp(DnsTransaction *t) {
if (t->stream)
return 0;
- if (t->scope->protocol == DNS_PROTOCOL_DNS)
+ switch (t->scope->protocol) {
+ case DNS_PROTOCOL_DNS:
fd = dns_scope_tcp_socket(t->scope, AF_UNSPEC, NULL, 53, &server);
- else if (t->scope->protocol == DNS_PROTOCOL_LLMNR) {
+ break;
+ case DNS_PROTOCOL_LLMNR:
/* When we already received a reply to this (but it was truncated), send to its sender address */
if (t->received)
fd = dns_scope_tcp_socket(t->scope, t->received->family, &t->received->sender, t->received->sender_port, NULL);
@@ -274,12 +283,16 @@ static int dns_transaction_open_tcp(DnsTransaction *t) {
if (r == 0)
return -EINVAL;
if (family != t->scope->family)
- return -EAFNOSUPPORT;
+ return -ESRCH;
fd = dns_scope_tcp_socket(t->scope, family, &address, LLMNR_PORT, NULL);
}
- } else
+
+ break;
+
+ default:
return -EAFNOSUPPORT;
+ }
if (fd < 0)
return fd;
@@ -315,8 +328,8 @@ static void dns_transaction_next_dns_server(DnsTransaction *t) {
assert(t);
t->server = dns_server_unref(t->server);
- t->dns_event_source = sd_event_source_unref(t->dns_event_source);
- t->dns_fd = safe_close(t->dns_fd);
+ t->dns_udp_event_source = sd_event_source_unref(t->dns_udp_event_source);
+ t->dns_udp_fd = safe_close(t->dns_udp_fd);
dns_scope_next_dns_server(t->scope);
}
@@ -335,7 +348,8 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) {
* should hence not attempt to access the query or transaction
* after calling this function. */
- if (t->scope->protocol == DNS_PROTOCOL_LLMNR) {
+ switch (t->scope->protocol) {
+ case DNS_PROTOCOL_LLMNR:
assert(t->scope->link);
/* For LLMNR we will not accept any packets from other
@@ -354,6 +368,14 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) {
dns_transaction_tentative(t, p);
return;
}
+
+ break;
+
+ case DNS_PROTOCOL_DNS:
+ break;
+
+ default:
+ assert_not_reached("Invalid DNS protocol.");
}
if (t->received != p) {
@@ -390,7 +412,7 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) {
break;
default:
- assert_not_reached("Invalid DNS protocol.");
+ break;
}
if (DNS_PACKET_TC(p)) {
@@ -478,16 +500,16 @@ static int dns_transaction_emit(DnsTransaction *t) {
if (fd < 0)
return fd;
- r = sd_event_add_io(t->scope->manager->event, &t->dns_event_source, fd, EPOLLIN, on_dns_packet, t);
+ r = sd_event_add_io(t->scope->manager->event, &t->dns_udp_event_source, fd, EPOLLIN, on_dns_packet, t);
if (r < 0)
return r;
- t->dns_fd = fd;
+ t->dns_udp_fd = fd;
fd = -1;
t->server = dns_server_ref(server);
}
- r = dns_scope_emit(t->scope, t->dns_fd, t->sent);
+ r = dns_scope_emit(t->scope, t->dns_udp_fd, t->sent);
if (r < 0)
return r;
diff --git a/src/resolve/resolved-dns-transaction.h b/src/resolve/resolved-dns-transaction.h
index 4db9352a04..acf6a6f651 100644
--- a/src/resolve/resolved-dns-transaction.h
+++ b/src/resolve/resolved-dns-transaction.h
@@ -62,10 +62,10 @@ struct DnsTransaction {
sd_event_source *timeout_event_source;
unsigned n_attempts;
- int dns_fd;
- sd_event_source *dns_event_source;
+ int dns_udp_fd;
+ sd_event_source *dns_udp_event_source;
- /* the active server */
+ /* The active server */
DnsServer *server;
/* TCP connection logic, if we need it */
diff --git a/src/resolve/resolved-dns-zone.c b/src/resolve/resolved-dns-zone.c
index fc212f48f4..674bb6af28 100644
--- a/src/resolve/resolved-dns-zone.c
+++ b/src/resolve/resolved-dns-zone.c
@@ -636,3 +636,40 @@ void dns_zone_verify_all(DnsZone *zone) {
dns_zone_item_verify(j);
}
}
+
+void dns_zone_dump(DnsZone *zone, FILE *f) {
+ Iterator iterator;
+ DnsZoneItem *i;
+ int r;
+
+ if (!zone)
+ return;
+
+ if (!f)
+ f = stdout;
+
+ HASHMAP_FOREACH(i, zone->by_key, iterator) {
+ DnsZoneItem *j;
+
+ LIST_FOREACH(by_key, j, i) {
+ _cleanup_free_ char *t = NULL;
+
+ r = dns_resource_record_to_string(j->rr, &t);
+ if (r < 0) {
+ log_oom();
+ continue;
+ }
+
+ fputc('\t', f);
+ fputs(t, f);
+ fputc('\n', f);
+ }
+ }
+}
+
+bool dns_zone_is_empty(DnsZone *zone) {
+ if (!zone)
+ return true;
+
+ return hashmap_isempty(zone->by_key);
+}
diff --git a/src/resolve/resolved-dns-zone.h b/src/resolve/resolved-dns-zone.h
index 71851265c6..495d17cdb1 100644
--- a/src/resolve/resolved-dns-zone.h
+++ b/src/resolve/resolved-dns-zone.h
@@ -78,3 +78,6 @@ int dns_zone_verify_conflicts(DnsZone *zone, DnsResourceKey *key);
void dns_zone_verify_all(DnsZone *zone);
void dns_zone_item_probe_stop(DnsZoneItem *i);
+
+void dns_zone_dump(DnsZone *zone, FILE *f);
+bool dns_zone_is_empty(DnsZone *zone);
diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c
index fb2a06b517..13852192c4 100644
--- a/src/resolve/resolved-manager.c
+++ b/src/resolve/resolved-manager.c
@@ -430,6 +430,31 @@ static int manager_watch_hostname(Manager *m) {
return 0;
}
+static int manager_sigusr1(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
+ _cleanup_free_ char *buffer = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ Manager *m = userdata;
+ size_t size = 0;
+ DnsScope *scope;
+
+ assert(s);
+ assert(si);
+ assert(m);
+
+ f = open_memstream(&buffer, &size);
+ if (!f)
+ return log_oom();
+
+ LIST_FOREACH(scopes, scope, m->dns_scopes)
+ dns_scope_dump(scope, f);
+
+ if (fflush_and_check(f) < 0)
+ return log_oom();
+
+ log_dump(LOG_INFO, buffer);
+ return 0;
+}
+
int manager_new(Manager **ret) {
_cleanup_(manager_freep) Manager *m = NULL;
int r;
@@ -480,6 +505,8 @@ int manager_new(Manager **ret) {
if (r < 0)
return r;
+ (void) sd_event_add_signal(m->event, &m->sigusr1_event_source, SIGUSR1, manager_sigusr1, m);
+
*ret = m;
m = NULL;
@@ -527,13 +554,15 @@ Manager *manager_free(Manager *m) {
sd_event_source_unref(m->bus_retry_event_source);
sd_bus_unref(m->bus);
+ sd_event_source_unref(m->sigusr1_event_source);
+
sd_event_unref(m->event);
dns_resource_key_unref(m->llmnr_host_ipv4_key);
dns_resource_key_unref(m->llmnr_host_ipv6_key);
- safe_close(m->hostname_fd);
sd_event_source_unref(m->hostname_event_source);
+ safe_close(m->hostname_fd);
free(m->llmnr_hostname);
free(m->mdns_hostname);
diff --git a/src/resolve/resolved-manager.h b/src/resolve/resolved-manager.h
index 6f7972bbf3..fe7fe99505 100644
--- a/src/resolve/resolved-manager.h
+++ b/src/resolve/resolved-manager.h
@@ -102,6 +102,8 @@ struct Manager {
/* Watch for system suspends */
sd_bus_slot *prepare_for_sleep_slot;
+
+ sd_event_source *sigusr1_event_source;
};
/* Manager */
diff --git a/src/resolve/resolved.c b/src/resolve/resolved.c
index 0af5545f8e..32e61af925 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, -1) >= 0);
+ assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGUSR1, -1) >= 0);
r = manager_new(&m);
if (r < 0) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2025-03-12 23:42:09 +0000