The current way of updating a network configuration uses `virsh net-update` to add, delete or modify entries. But with such a mechansim one should know if an entry with current info already exists. Adding modify-or-add option automatically performs either modify or add depending on the current state. Fixes: https://gitlab.com/libvirt/libvirt/-/issues/363 Signed-off-by: Abhiram Tilak <atp.exp@xxxxxxxxx> --- docs/manpages/virsh.rst | 5 +- include/libvirt/libvirt-network.h | 2 + src/conf/network_conf.c | 148 ++++++++++++++++++++++++------ tools/virsh-network.c | 4 +- 4 files changed, 126 insertions(+), 33 deletions(-) diff --git a/docs/manpages/virsh.rst b/docs/manpages/virsh.rst index 115b802c45..dc91ba895c 100644 --- a/docs/manpages/virsh.rst +++ b/docs/manpages/virsh.rst @@ -5908,7 +5908,10 @@ changes optionally taking effect immediately, without needing to destroy and re-start the network. *command* is one of "add-first", "add-last", "add" (a synonym for -add-last), "delete", or "modify". +add-last), "delete", "modify", "modify-or-add" (modify + add-last), +"modify-or-add-first". The 'modify-or-add' commands perform modify or +add operation depending on the given state, and can be useful for +scripting. *section* is one of "bridge", "domain", "ip", "ip-dhcp-host", "ip-dhcp-range", "forward", "forward-interface", "forward-pf", diff --git a/include/libvirt/libvirt-network.h b/include/libvirt/libvirt-network.h index 58591be7ac..a6e132f407 100644 --- a/include/libvirt/libvirt-network.h +++ b/include/libvirt/libvirt-network.h @@ -181,6 +181,8 @@ typedef enum { VIR_NETWORK_UPDATE_COMMAND_DELETE = 2, /* delete an existing element (Since: 0.10.2) */ VIR_NETWORK_UPDATE_COMMAND_ADD_LAST = 3, /* add an element at end of list (Since: 0.10.2) */ VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST = 4, /* add an element at start of list (Since: 0.10.2) */ + VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST = 5, /* if exists modify or add an element at end of list (Since: 0.10.2) */ + VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST = 6, /* if exists modify or add an element at start of list (Since: 0.10.2) */ # ifdef VIR_ENUM_SENTINELS VIR_NETWORK_UPDATE_COMMAND_LAST /* (Since: 0.10.2) */ # endif diff --git a/src/conf/network_conf.c b/src/conf/network_conf.c index cc92ed0b03..2835395385 100644 --- a/src/conf/network_conf.c +++ b/src/conf/network_conf.c @@ -2721,6 +2721,9 @@ virNetworkDefUpdateIPDHCPHost(virNetworkDef *def, virNetworkDHCPHostDef host = { 0 }; bool partialOkay = (command == VIR_NETWORK_UPDATE_COMMAND_DELETE); + /* added for modify-or-add feature */ + bool modified = false; + if (virNetworkDefUpdateCheckElementName(def, ctxt->node, "host") < 0) goto cleanup; @@ -2826,7 +2829,34 @@ virNetworkDefUpdateIPDHCPHost(virNetworkDef *def, virNetworkDHCPHostDefClear(&ipdef->hosts[i]); VIR_DELETE_ELEMENT(ipdef->hosts, i, ipdef->nhosts); - } else { + } else if ((command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST) || + (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST)) { + + /* find entries with matching name/address/ip */ + for (i = 0; i < ipdef->nhosts; i++) { + if ((host.mac && ipdef->hosts[i].mac && + !virMacAddrCompare(host.mac, ipdef->hosts[i].mac)) || + (host.name && + STREQ_NULLABLE(host.name, ipdef->hosts[i].name)) || + (VIR_SOCKET_ADDR_VALID(&host.ip) && + virSocketAddrEqual(&host.ip, &ipdef->hosts[i].ip))) { + + modified = true; + break; + } + } + + /* if element is found then modify, or else add to beginning/end of list */ + if (modified) { + virNetworkDHCPHostDefClear(&ipdef->hosts[i]); + ipdef->hosts[i] = host; + memset(&host, 0, sizeof(host)); + } else if (VIR_INSERT_ELEMENT(ipdef->hosts, + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST + ? 0 : ipdef->nhosts, + ipdef->nhosts, host) < 0) + goto cleanup; + } else { virNetworkDefUpdateUnknownCommand(command); goto cleanup; } @@ -2885,7 +2915,9 @@ virNetworkDefUpdateIPDHCPRange(virNetworkDef *def, } if ((command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST) || - (command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST)) { + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST) || + (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST) || + (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST)) { if (virNetworkDefUpdateCheckMultiDHCP(def, ipdef) < 0) return -1; @@ -2894,17 +2926,24 @@ virNetworkDefUpdateIPDHCPRange(virNetworkDef *def, g_autofree char *startip = virSocketAddrFormat(&range.addr.start); g_autofree char *endip = virSocketAddrFormat(&range.addr.end); - virReportError(VIR_ERR_OPERATION_INVALID, - _("there is an existing dhcp range entry in network '%1$s' that matches \"<range start='%2$s' end='%3$s'/>\""), - def->name, - startip ? startip : "unknown", - endip ? endip : "unknown"); + + if ((command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST) || + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST)) + virReportError(VIR_ERR_OPERATION_INVALID, + _("there is an existing dhcp range entry in network '%1$s' that matches \"<range start='%2$s' end='%3$s'/>\""), + def->name, + startip ? startip : "unknown", + endip ? endip : "unknown"); + else + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("dhcp ranges cannot be modified, only added or deleted")); return -1; } /* add to beginning/end of list */ if (VIR_INSERT_ELEMENT(ipdef->ranges, - command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST) ? 0 : ipdef->nranges, ipdef->nranges, range) < 0) return -1; @@ -2981,18 +3020,26 @@ virNetworkDefUpdateForwardInterface(virNetworkDef *def, } if ((command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST) || - (command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST)) { + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST) || + (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST) || + (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST)) { if (i < def->forward.nifs) { - virReportError(VIR_ERR_OPERATION_INVALID, - _("there is an existing interface entry in network '%1$s' that matches \"<interface dev='%2$s'>\""), - def->name, iface.device.dev); + if ((command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST) || + command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST) + virReportError(VIR_ERR_OPERATION_INVALID, + _("there is an existing interface entry in network '%1$s' that matches \"<interface dev='%2$s'>\""), + def->name, iface.device.dev); + else + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("forward interface entries cannot be modified, only added or deleted")); goto cleanup; } /* add to beginning/end of list */ if (VIR_INSERT_ELEMENT(def->forward.ifs, - command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST) ? 0 : def->forward.nifs, def->forward.nifs, iface) < 0) goto cleanup; @@ -3056,6 +3103,9 @@ virNetworkDefUpdatePortGroup(virNetworkDef *def, int ret = -1; virPortGroupDef portgroup = { 0 }; + /* added for modify-or-add feature */ + bool modified = false; + if (virNetworkDefUpdateCheckElementName(def, ctxt->node, "portgroup") < 0) goto cleanup; @@ -3097,6 +3147,17 @@ virNetworkDefUpdatePortGroup(virNetworkDef *def, goto cleanup; } + /* modify found entries for modify-or-add command */ + if (foundName >= 0 && (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST)) { + + /* replace existing entry */ + virPortGroupDefClear(&def->portGroups[foundName]); + def->portGroups[foundName] = portgroup; + memset(&portgroup, 0, sizeof(portgroup)); + modified = true; + } + if (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY) { /* replace existing entry */ @@ -3105,11 +3166,14 @@ virNetworkDefUpdatePortGroup(virNetworkDef *def, memset(&portgroup, 0, sizeof(portgroup)); } else if ((command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST) || - (command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST)) { + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST) || + (!modified && command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST) || + (!modified && command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST)) { /* add to beginning/end of list */ if (VIR_INSERT_ELEMENT(def->portGroups, - command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST) ? 0 : def->nPortGroups, def->nPortGroups, portgroup) < 0) goto cleanup; @@ -3144,7 +3208,9 @@ virNetworkDefUpdateDNSHost(virNetworkDef *def, virNetworkDNSDef *dns = &def->dns; virNetworkDNSHostDef host = { 0 }; bool isAdd = (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || - command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST); + command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST); int foundCt = 0; if (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY) { @@ -3185,15 +3251,21 @@ virNetworkDefUpdateDNSHost(virNetworkDef *def, if (isAdd) { if (foundCt > 0) { - virReportError(VIR_ERR_OPERATION_INVALID, - _("there is already at least one DNS HOST record with a matching field in network %1$s"), - def->name); + if ((command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST) || + command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST) + virReportError(VIR_ERR_OPERATION_INVALID, + _("there is already at least one DNS HOST record with a matching field in network %1$s"), + def->name); + else + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("DNS HOST records cannot be modified, only added or deleted")); goto cleanup; } /* add to beginning/end of list */ if (VIR_INSERT_ELEMENT(dns->hosts, - command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST) ? 0 : dns->nhosts, dns->nhosts, host) < 0) goto cleanup; } else if (command == VIR_NETWORK_UPDATE_COMMAND_DELETE) { @@ -3240,7 +3312,9 @@ virNetworkDefUpdateDNSSrv(virNetworkDef *def, virNetworkDNSDef *dns = &def->dns; virNetworkDNSSrvDef srv = { 0 }; bool isAdd = (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || - command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST); + command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST); int foundCt = 0; if (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY) { @@ -3268,15 +3342,21 @@ virNetworkDefUpdateDNSSrv(virNetworkDef *def, if (isAdd) { if (foundCt > 0) { - virReportError(VIR_ERR_OPERATION_INVALID, - _("there is already at least one DNS SRV record matching all specified fields in network %1$s"), - def->name); + if ((command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST) || + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST)) + virReportError(VIR_ERR_OPERATION_INVALID, + _("there is already at least one DNS SRV record matching all specified fields in network %1$s"), + def->name); + else + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("DNS SRV records cannot be modified, only added or deleted")); goto cleanup; } /* add to beginning/end of list */ if (VIR_INSERT_ELEMENT(dns->srvs, - command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST) ? 0 : dns->nsrvs, dns->nsrvs, srv) < 0) goto cleanup; } else if (command == VIR_NETWORK_UPDATE_COMMAND_DELETE) { @@ -3322,7 +3402,9 @@ virNetworkDefUpdateDNSTxt(virNetworkDef *def, virNetworkDNSDef *dns = &def->dns; virNetworkDNSTxtDef txt = { 0 }; bool isAdd = (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || - command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST); + command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_LAST); if (command == VIR_NETWORK_UPDATE_COMMAND_MODIFY) { virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", @@ -3344,15 +3426,21 @@ virNetworkDefUpdateDNSTxt(virNetworkDef *def, if (isAdd) { if (foundIdx < dns->ntxts) { - virReportError(VIR_ERR_OPERATION_INVALID, - _("there is already a DNS TXT record with name '%1$s' in network %2$s"), - txt.name, def->name); + if ((command == VIR_NETWORK_UPDATE_COMMAND_ADD_LAST) || + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST)) + virReportError(VIR_ERR_OPERATION_INVALID, + _("there is already a DNS TXT record with name '%1$s' in network %2$s"), + txt.name, def->name); + else + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("DNS TXT records cannot be modified, only added or deleted")); goto cleanup; } /* add to beginning/end of list */ if (VIR_INSERT_ELEMENT(dns->txts, - command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST + (command == VIR_NETWORK_UPDATE_COMMAND_ADD_FIRST || + command == VIR_NETWORK_UPDATE_COMMAND_MODIFY_OR_ADD_FIRST) ? 0 : dns->ntxts, dns->ntxts, txt) < 0) goto cleanup; } else if (command == VIR_NETWORK_UPDATE_COMMAND_DELETE) { diff --git a/tools/virsh-network.c b/tools/virsh-network.c index 597e3d4530..c30305ac50 100644 --- a/tools/virsh-network.c +++ b/tools/virsh-network.c @@ -1231,7 +1231,7 @@ static const vshCmdOptDef opts_network_update[] = { .positional = true, .required = true, .completer = virshNetworkUpdateCommandCompleter, - .help = N_("type of update (add-first, add-last (add), delete, or modify)") + .help = N_("type of update (add-first, add-last (add), delete, modify, modify-or-add, or modify-or-add-first)") }, {.name = "section", .type = VSH_OT_STRING, @@ -1260,7 +1260,7 @@ static const vshCmdOptDef opts_network_update[] = { VIR_ENUM_IMPL(virshNetworkUpdateCommand, VIR_NETWORK_UPDATE_COMMAND_LAST, - "none", "modify", "delete", "add-last", "add-first"); + "none", "modify", "delete", "add-last", "add-first", "modify-or-add", "modify-or-add-first"); VIR_ENUM_IMPL(virshNetworkSection, VIR_NETWORK_SECTION_LAST, -- 2.44.0 _______________________________________________ Devel mailing list -- devel@xxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxx
