Re: [PATCH] network: allow "modify" option for DNS-Txt records

The "modify" command allows to replace an existing record (its text value). The primary key is the name of the record. If duplicity or missing record detected, throw error. Tests in networkxml2xmlupdatetest.c contain replacements of an existing DNS-text record and failure due to non-existing record. Resolves: https://gitlab.com/libvirt/libvirt/-/issues/639 Signed-off-by: Adam Julis <ajulis(a)redhat.com&gt; --- src/conf/network_conf.c | 18 ++++++++----- .../dns-txt-record-modify-fail.xml | 1 + .../dns-txt-record-modify-success.xml | 1 + .../nat-network-dns-txt-modify-ok.xml | 26 +++++++++++++++++++ tests/networkxml2xmlupdatetest.c | 9 +++++++ 5 files changed, 49 insertions(+), 6 deletions(-) create mode 100644 tests/networkxml2xmlupdatein/dns-txt-record-modify-fail.xml create mode 100644 tests/networkxml2xmlupdatein/dns-txt-record-modify-success.xml create mode 100644 tests/networkxml2xmlupdateout/nat-network-dns-txt-modify-ok.xml diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index fc387f9566..dd362b6ab2 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -3351,12 +3351,6 @@ virNetworkDefUpdateDNSTxt(virNetworkDef *def, bool isAdd = (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST); - if (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY) { - virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", - _("DNS TXT records cannot be modified, only added or deleted")); - goto cleanup; - } - if (virNetworkDefUpdateCheckElementName(def, ctxt->node, "txt") < 0) goto cleanup; @@ -3395,6 +3389,18 @@ virNetworkDefUpdateDNSTxt(virNetworkDef *def, virNetworkDNSTxtDefClear(&dns->txts[foundIdx]); VIR_DELETE_ELEMENT(dns->txts, foundIdx, dns->ntxts); + } else if (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY) { + + if (foundIdx == dns->ntxts) { + virReportError(VIR_ERR_OPERATION_INVALID, + _("couldn't locate a matching DNS TXT record in network %1$s"), + def->name); + goto cleanup; + } + + VIR_FREE(dns->txts[foundIdx].value); + dns->txts[foundIdx].value = g_strdup(txt.value);

+ } else { virNetworkDefUpdateUnknownCommand(command); goto cleanup;