diff options
| -rw-r--r-- | src/libsystemd/sd-bus/bus-common-errors.c | 1 | ||||
| -rw-r--r-- | src/libsystemd/sd-bus/bus-common-errors.h | 1 | ||||
| -rw-r--r-- | src/resolve/resolved-bus.c | 3 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-query.c | 3 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-scope.c | 19 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-scope.h | 2 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-transaction.c | 9 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-transaction.h | 1 |
8 files changed, 38 insertions, 1 deletions
diff --git a/src/libsystemd/sd-bus/bus-common-errors.c b/src/libsystemd/sd-bus/bus-common-errors.c index 9ddc9b5aaf..e344b3b77b 100644 --- a/src/libsystemd/sd-bus/bus-common-errors.c +++ b/src/libsystemd/sd-bus/bus-common-errors.c @@ -80,6 +80,7 @@ BUS_ERROR_MAP_ELF_REGISTER const sd_bus_error_map bus_common_errors[] = { SD_BUS_ERROR_MAP(BUS_ERROR_RR_TYPE_UNSUPPORTED, EOPNOTSUPP), SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_LINK, ENXIO), SD_BUS_ERROR_MAP(BUS_ERROR_LINK_BUSY, EBUSY), + SD_BUS_ERROR_MAP(BUS_ERROR_NETWORK_DOWN, ENETDOWN), SD_BUS_ERROR_MAP(BUS_ERROR_NO_SUCH_TRANSFER, ENXIO), SD_BUS_ERROR_MAP(BUS_ERROR_TRANSFER_IN_PROGRESS, EBUSY), diff --git a/src/libsystemd/sd-bus/bus-common-errors.h b/src/libsystemd/sd-bus/bus-common-errors.h index e93b6ac448..130779e8e3 100644 --- a/src/libsystemd/sd-bus/bus-common-errors.h +++ b/src/libsystemd/sd-bus/bus-common-errors.h @@ -79,6 +79,7 @@ #define BUS_ERROR_RR_TYPE_UNSUPPORTED "org.freedesktop.resolve1.ResourceRecordTypeUnsupported" #define BUS_ERROR_NO_SUCH_LINK "org.freedesktop.resolve1.NoSuchLink" #define BUS_ERROR_LINK_BUSY "org.freedesktop.resolve1.LinkBusy" +#define BUS_ERROR_NETWORK_DOWN "org.freedesktop.resolve1.NetworkDown" #define _BUS_ERROR_DNS "org.freedesktop.resolve1.DnsError." #define BUS_ERROR_NO_SUCH_TRANSFER "org.freedesktop.import1.NoSuchTransfer" diff --git a/src/resolve/resolved-bus.c b/src/resolve/resolved-bus.c index 9110ea52a6..66c2c25dec 100644 --- a/src/resolve/resolved-bus.c +++ b/src/resolve/resolved-bus.c @@ -59,6 +59,9 @@ static int reply_query_state(DnsQuery *q) { case DNS_TRANSACTION_RR_TYPE_UNSUPPORTED: return sd_bus_reply_method_errorf(q->request, BUS_ERROR_RR_TYPE_UNSUPPORTED, "Server does not support requested resource record type"); + case DNS_TRANSACTION_NETWORK_DOWN: + return sd_bus_reply_method_errorf(q->request, BUS_ERROR_NETWORK_DOWN, "Network is down"); + case DNS_TRANSACTION_RCODE_FAILURE: { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; diff --git a/src/resolve/resolved-dns-query.c b/src/resolve/resolved-dns-query.c index fc5bf4020f..165a52fcd0 100644 --- a/src/resolve/resolved-dns-query.c +++ b/src/resolve/resolved-dns-query.c @@ -891,7 +891,8 @@ static int dns_query_synthesize_reply(DnsQuery *q, DnsTransactionState *state) { DNS_TRANSACTION_RCODE_FAILURE, DNS_TRANSACTION_NO_SERVERS, DNS_TRANSACTION_TIMEOUT, - DNS_TRANSACTION_ATTEMPTS_MAX_REACHED)) + DNS_TRANSACTION_ATTEMPTS_MAX_REACHED, + DNS_TRANSACTION_NETWORK_DOWN)) return 0; DNS_QUESTION_FOREACH(key, q->question_utf8) { diff --git a/src/resolve/resolved-dns-scope.c b/src/resolve/resolved-dns-scope.c index 8a52d66fad..ac4887abea 100644 --- a/src/resolve/resolved-dns-scope.c +++ b/src/resolve/resolved-dns-scope.c @@ -1015,3 +1015,22 @@ bool dns_scope_name_needs_search_domain(DnsScope *s, const char *name) { return dns_name_is_single_label(name); } + +bool dns_scope_network_good(DnsScope *s) { + Iterator i; + Link *l; + + /* Checks whether the network is in good state for lookups on this scope. For mDNS/LLMNR/Classic DNS scopes + * bound to links this is easy, as they don't even exist if the link isn't in a suitable state. For the global + * DNS scope we check whether there are any links that are up and have an address. */ + + if (s->link) + return true; + + HASHMAP_FOREACH(l, s->manager->links, i) { + if (link_relevant(l, AF_UNSPEC, false)) + return true; + } + + return false; +} diff --git a/src/resolve/resolved-dns-scope.h b/src/resolve/resolved-dns-scope.h index a0676bd30e..f9b63d56d9 100644 --- a/src/resolve/resolved-dns-scope.h +++ b/src/resolve/resolved-dns-scope.h @@ -107,3 +107,5 @@ void dns_scope_dump(DnsScope *s, FILE *f); DnsSearchDomain *dns_scope_get_search_domains(DnsScope *s); bool dns_scope_name_needs_search_domain(DnsScope *s, const char *name); + +bool dns_scope_network_good(DnsScope *s); diff --git a/src/resolve/resolved-dns-transaction.c b/src/resolve/resolved-dns-transaction.c index 5640cd1d33..d485cd917d 100644 --- a/src/resolve/resolved-dns-transaction.c +++ b/src/resolve/resolved-dns-transaction.c @@ -1094,6 +1094,14 @@ static int dns_transaction_prepare(DnsTransaction *t, usec_t ts) { dns_transaction_stop_timeout(t); + r = dns_scope_network_good(t->scope); + if (r < 0) + return r; + if (r == 0) { + dns_transaction_complete(t, DNS_TRANSACTION_NETWORK_DOWN); + return 0; + } + if (t->n_attempts >= TRANSACTION_ATTEMPTS_MAX(t->scope->protocol)) { dns_transaction_complete(t, DNS_TRANSACTION_ATTEMPTS_MAX_REACHED); return 0; @@ -2969,6 +2977,7 @@ static const char* const dns_transaction_state_table[_DNS_TRANSACTION_STATE_MAX] [DNS_TRANSACTION_DNSSEC_FAILED] = "dnssec-failed", [DNS_TRANSACTION_NO_TRUST_ANCHOR] = "no-trust-anchor", [DNS_TRANSACTION_RR_TYPE_UNSUPPORTED] = "rr-type-unsupported", + [DNS_TRANSACTION_NETWORK_DOWN] = "network-down", }; DEFINE_STRING_TABLE_LOOKUP(dns_transaction_state, DnsTransactionState); diff --git a/src/resolve/resolved-dns-transaction.h b/src/resolve/resolved-dns-transaction.h index 76cf6e71db..80a2591fbc 100644 --- a/src/resolve/resolved-dns-transaction.h +++ b/src/resolve/resolved-dns-transaction.h @@ -40,6 +40,7 @@ enum DnsTransactionState { DNS_TRANSACTION_DNSSEC_FAILED, DNS_TRANSACTION_NO_TRUST_ANCHOR, DNS_TRANSACTION_RR_TYPE_UNSUPPORTED, + DNS_TRANSACTION_NETWORK_DOWN, _DNS_TRANSACTION_STATE_MAX, _DNS_TRANSACTION_STATE_INVALID = -1 }; |