[libvirt] [PATCH 5/8] virsh: optimize creation of default connection

Ramon de Carvalho Valle reported a problem with: virsh connect qemu:///system as a non-root user. The real root problem appears to be a regression in libvirtd being auto-started on the default qemu:///session URI; however, the symptom points to an independent flaw in virsh - we shouldn't be wasting efforts on making a connection if we aren't going to be using that connection. Fixing virsh avoids Ramon's issue, while I work in the meantime to fix the real libvirtd regression. This patch looks big, but that's because 'gcc -Wmissing-field-initializers' gets triggered by './autobuild.sh --enable-compile-warnings=error', so I had to add 0 initialization to everyone (rather than my preference of just adding the non-zero flags to virshCmds and to cmdConnect). Meanwhile, if you use 'virsh -c URI', the connection must succeed; this patch _only_ optimizes the default connection to be deferred to a later point where we know if a particular command to be run needs a connection. * tools/virsh.c (VSH_CMD_FLAG_NOCONNECT): New flag. (vshCmdDef): Add new flags field. (vshCommandRun): Honor new flag. (domManagementCmds, domMonitoringCmds, storagePoolCmds) (storageVolCmds, networkCmds, nodedevCmds, ifaceCmds) (nwfilterCmds, secretCmds, virshCmds, snapshotCmds) (hostAndHypervisorCmds): Populate new field. (vshReconnect): Don't warn on initial connection. --- Original post: https://www.redhat.com/archives/libvir-list/2011-March/msg00633.html tools/virsh.c | 423 +++++++++++++++++++++++++++++++++------------------------ 1 files changed, 247 insertions(+), 176 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index 50ca50f..1e22325 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -190,6 +190,13 @@ typedef struct vshCmdOpt { } vshCmdOpt; /* + * Command Usage Flags + */ +enum { + VSH_CMD_FLAG_NOCONNECT = (1 << 0), /* no prior connection needed */ +}; + +/* * vshCmdDef - command definition */ typedef struct { @@ -197,6 +204,7 @@ typedef struct { int (*handler) (vshControl *, const vshCmd *); /* command handler */ const vshCmdOptDef *opts; /* definition of command options */ const vshCmdInfo *info; /* details about command */ + int flags; /* bitwise OR of VSH_CMD_FLAG */ } vshCmdDef; /* @@ -558,16 +566,21 @@ vshSetupSignals(void) { * */ static void -vshReconnect(vshControl *ctl) { - if (ctl->conn != NULL) +vshReconnect(vshControl *ctl) +{ + bool connected = false; + + if (ctl->conn != NULL) { + connected = true; virConnectClose(ctl->conn); + } ctl->conn = virConnectOpenAuth(ctl->name, virConnectAuthPtrDefault, ctl->readonly ? VIR_CONNECT_RO : 0); if (!ctl->conn) vshError(ctl, "%s", _("Failed to reconnect to the hypervisor")); - else + else if (connected) vshError(ctl, "%s", _("Reconnected to the hypervisor")); disconnected = 0; } @@ -9659,7 +9672,7 @@ static const vshCmdOptDef opts_cd[] = { }; static int -cmdCd(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED) +cmdCd(vshControl *ctl, const vshCmd *cmd) { const char *dir = NULL; char *dir_malloced = NULL; @@ -10442,206 +10455,260 @@ cleanup: } static const vshCmdDef domManagementCmds[] = { - {"attach-device", cmdAttachDevice, opts_attach_device, info_attach_device}, - {"attach-disk", cmdAttachDisk, opts_attach_disk, info_attach_disk}, - {"attach-interface", cmdAttachInterface, opts_attach_interface, info_attach_interface}, - {"autostart", cmdAutostart, opts_autostart, info_autostart}, - {"blkiotune", cmdBlkiotune, opts_blkiotune, info_blkiotune}, + {"attach-device", cmdAttachDevice, opts_attach_device, + info_attach_device, 0}, + {"attach-disk", cmdAttachDisk, opts_attach_disk, + info_attach_disk, 0}, + {"attach-interface", cmdAttachInterface, opts_attach_interface, + info_attach_interface, 0}, + {"autostart", cmdAutostart, opts_autostart, info_autostart, 0}, + {"blkiotune", cmdBlkiotune, opts_blkiotune, info_blkiotune, 0}, #ifndef WIN32 - {"console", cmdConsole, opts_console, info_console}, + {"console", cmdConsole, opts_console, info_console, 0}, #endif - {"cpu-baseline", cmdCPUBaseline, opts_cpu_baseline, info_cpu_baseline}, - {"cpu-compare", cmdCPUCompare, opts_cpu_compare, info_cpu_compare}, - {"create", cmdCreate, opts_create, info_create}, - {"define", cmdDefine, opts_define, info_define}, - {"destroy", cmdDestroy, opts_destroy, info_destroy}, - {"detach-device", cmdDetachDevice, opts_detach_device, info_detach_device}, - {"detach-disk", cmdDetachDisk, opts_detach_disk, info_detach_disk}, - {"detach-interface", cmdDetachInterface, opts_detach_interface, info_detach_interface}, - {"domid", cmdDomid, opts_domid, info_domid}, - {"domjobabort", cmdDomjobabort, opts_domjobabort, info_domjobabort}, - {"domjobinfo", cmdDomjobinfo, opts_domjobinfo, info_domjobinfo}, - {"domname", cmdDomname, opts_domname, info_domname}, - {"domuuid", cmdDomuuid, opts_domuuid, info_domuuid}, - {"domxml-from-native", cmdDomXMLFromNative, opts_domxmlfromnative, info_domxmlfromnative}, - {"domxml-to-native", cmdDomXMLToNative, opts_domxmltonative, info_domxmltonative}, - {"dump", cmdDump, opts_dump, info_dump}, - {"dumpxml", cmdDumpXML, opts_dumpxml, info_dumpxml}, - {"edit", cmdEdit, opts_edit, info_edit}, - {"managedsave", cmdManagedSave, opts_managedsave, info_managedsave}, - {"managedsave-remove", cmdManagedSaveRemove, opts_managedsaveremove, info_managedsaveremove}, - {"maxvcpus", cmdMaxvcpus, opts_maxvcpus, info_maxvcpus}, - {"memtune", cmdMemtune, opts_memtune, info_memtune}, - {"migrate", cmdMigrate, opts_migrate, info_migrate}, - {"migrate-setmaxdowntime", cmdMigrateSetMaxDowntime, opts_migrate_setmaxdowntime, info_migrate_setmaxdowntime}, - {"reboot", cmdReboot, opts_reboot, info_reboot}, - {"restore", cmdRestore, opts_restore, info_restore}, - {"resume", cmdResume, opts_resume, info_resume}, - {"save", cmdSave, opts_save, info_save}, - {"schedinfo", cmdSchedinfo, opts_schedinfo, info_schedinfo}, - {"setmaxmem", cmdSetmaxmem, opts_setmaxmem, info_setmaxmem}, - {"setmem", cmdSetmem, opts_setmem, info_setmem}, - {"setvcpus", cmdSetvcpus, opts_setvcpus, info_setvcpus}, - {"shutdown", cmdShutdown, opts_shutdown, info_shutdown}, - {"start", cmdStart, opts_start, info_start}, - {"suspend", cmdSuspend, opts_suspend, info_suspend}, - {"ttyconsole", cmdTTYConsole, opts_ttyconsole, info_ttyconsole}, - {"undefine", cmdUndefine, opts_undefine, info_undefine}, - {"update-device", cmdUpdateDevice, opts_update_device, info_update_device}, - {"vcpucount", cmdVcpucount, opts_vcpucount, info_vcpucount}, - {"vcpuinfo", cmdVcpuinfo, opts_vcpuinfo, info_vcpuinfo}, - {"vcpupin", cmdVcpupin, opts_vcpupin, info_vcpupin}, - {"version", cmdVersion, NULL, info_version}, - {"vncdisplay", cmdVNCDisplay, opts_vncdisplay, info_vncdisplay}, - {NULL, NULL, NULL, NULL} + {"cpu-baseline", cmdCPUBaseline, opts_cpu_baseline, info_cpu_baseline, 0}, + {"cpu-compare", cmdCPUCompare, opts_cpu_compare, info_cpu_compare, 0}, + {"create", cmdCreate, opts_create, info_create, 0}, + {"define", cmdDefine, opts_define, info_define, 0}, + {"destroy", cmdDestroy, opts_destroy, info_destroy, 0}, + {"detach-device", cmdDetachDevice, opts_detach_device, + info_detach_device, 0}, + {"detach-disk", cmdDetachDisk, opts_detach_disk, info_detach_disk, 0}, + {"detach-interface", cmdDetachInterface, opts_detach_interface, + info_detach_interface, 0}, + {"domid", cmdDomid, opts_domid, info_domid, 0}, + {"domjobabort", cmdDomjobabort, opts_domjobabort, info_domjobabort, 0}, + {"domjobinfo", cmdDomjobinfo, opts_domjobinfo, info_domjobinfo, 0}, + {"domname", cmdDomname, opts_domname, info_domname, 0}, + {"domuuid", cmdDomuuid, opts_domuuid, info_domuuid, 0}, + {"domxml-from-native", cmdDomXMLFromNative, opts_domxmlfromnative, + info_domxmlfromnative, 0}, + {"domxml-to-native", cmdDomXMLToNative, opts_domxmltonative, + info_domxmltonative, 0}, + {"dump", cmdDump, opts_dump, info_dump, 0}, + {"dumpxml", cmdDumpXML, opts_dumpxml, info_dumpxml, 0}, + {"edit", cmdEdit, opts_edit, info_edit, 0}, + {"managedsave", cmdManagedSave, opts_managedsave, info_managedsave, 0}, + {"managedsave-remove", cmdManagedSaveRemove, opts_managedsaveremove, + info_managedsaveremove, 0}, + {"maxvcpus", cmdMaxvcpus, opts_maxvcpus, info_maxvcpus, 0}, + {"memtune", cmdMemtune, opts_memtune, info_memtune, 0}, + {"migrate", cmdMigrate, opts_migrate, info_migrate, 0}, + {"migrate-setmaxdowntime", cmdMigrateSetMaxDowntime, + opts_migrate_setmaxdowntime, info_migrate_setmaxdowntime, 0}, + {"reboot", cmdReboot, opts_reboot, info_reboot, 0}, + {"restore", cmdRestore, opts_restore, info_restore, 0}, + {"resume", cmdResume, opts_resume, info_resume, 0}, + {"save", cmdSave, opts_save, info_save, 0}, + {"schedinfo", cmdSchedinfo, opts_schedinfo, info_schedinfo, 0}, + {"setmaxmem", cmdSetmaxmem, opts_setmaxmem, info_setmaxmem, 0}, + {"setmem", cmdSetmem, opts_setmem, info_setmem, 0}, + {"setvcpus", cmdSetvcpus, opts_setvcpus, info_setvcpus, 0}, + {"shutdown", cmdShutdown, opts_shutdown, info_shutdown, 0}, + {"start", cmdStart, opts_start, info_start, 0}, + {"suspend", cmdSuspend, opts_suspend, info_suspend, 0}, + {"ttyconsole", cmdTTYConsole, opts_ttyconsole, info_ttyconsole, 0}, + {"undefine", cmdUndefine, opts_undefine, info_undefine, 0}, + {"update-device", cmdUpdateDevice, opts_update_device, + info_update_device, 0}, + {"vcpucount", cmdVcpucount, opts_vcpucount, info_vcpucount, 0}, + {"vcpuinfo", cmdVcpuinfo, opts_vcpuinfo, info_vcpuinfo, 0}, + {"vcpupin", cmdVcpupin, opts_vcpupin, info_vcpupin, 0}, + {"version", cmdVersion, NULL, info_version, 0}, + {"vncdisplay", cmdVNCDisplay, opts_vncdisplay, info_vncdisplay, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef domMonitoringCmds[] = { - {"domblkinfo", cmdDomblkinfo, opts_domblkinfo, info_domblkinfo}, - {"domblkstat", cmdDomblkstat, opts_domblkstat, info_domblkstat}, - {"domifstat", cmdDomIfstat, opts_domifstat, info_domifstat}, - {"dominfo", cmdDominfo, opts_dominfo, info_dominfo}, - {"dommemstat", cmdDomMemStat, opts_dommemstat, info_dommemstat}, - {"domstate", cmdDomstate, opts_domstate, info_domstate}, - {"list", cmdList, opts_list, info_list}, - {NULL, NULL, NULL, NULL} + {"domblkinfo", cmdDomblkinfo, opts_domblkinfo, info_domblkinfo, 0}, + {"domblkstat", cmdDomblkstat, opts_domblkstat, info_domblkstat, 0}, + {"domifstat", cmdDomIfstat, opts_domifstat, info_domifstat, 0}, + {"dominfo", cmdDominfo, opts_dominfo, info_dominfo, 0}, + {"dommemstat", cmdDomMemStat, opts_dommemstat, info_dommemstat, 0}, + {"domstate", cmdDomstate, opts_domstate, info_domstate, 0}, + {"list", cmdList, opts_list, info_list, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef storagePoolCmds[] = { {"find-storage-pool-sources-as", cmdPoolDiscoverSourcesAs, - opts_find_storage_pool_sources_as, info_find_storage_pool_sources_as}, + opts_find_storage_pool_sources_as, info_find_storage_pool_sources_as, 0}, {"find-storage-pool-sources", cmdPoolDiscoverSources, - opts_find_storage_pool_sources, info_find_storage_pool_sources}, - {"pool-autostart", cmdPoolAutostart, opts_pool_autostart, info_pool_autostart}, - {"pool-build", cmdPoolBuild, opts_pool_build, info_pool_build}, - {"pool-create-as", cmdPoolCreateAs, opts_pool_X_as, info_pool_create_as}, - {"pool-create", cmdPoolCreate, opts_pool_create, info_pool_create}, - {"pool-define-as", cmdPoolDefineAs, opts_pool_X_as, info_pool_define_as}, - {"pool-define", cmdPoolDefine, opts_pool_define, info_pool_define}, - {"pool-delete", cmdPoolDelete, opts_pool_delete, info_pool_delete}, - {"pool-destroy", cmdPoolDestroy, opts_pool_destroy, info_pool_destroy}, - {"pool-dumpxml", cmdPoolDumpXML, opts_pool_dumpxml, info_pool_dumpxml}, - {"pool-edit", cmdPoolEdit, opts_pool_edit, info_pool_edit}, - {"pool-info", cmdPoolInfo, opts_pool_info, info_pool_info}, - {"pool-list", cmdPoolList, opts_pool_list, info_pool_list}, - {"pool-name", cmdPoolName, opts_pool_name, info_pool_name}, - {"pool-refresh", cmdPoolRefresh, opts_pool_refresh, info_pool_refresh}, - {"pool-start", cmdPoolStart, opts_pool_start, info_pool_start}, - {"pool-undefine", cmdPoolUndefine, opts_pool_undefine, info_pool_undefine}, - {"pool-uuid", cmdPoolUuid, opts_pool_uuid, info_pool_uuid}, - {NULL, NULL, NULL, NULL} + opts_find_storage_pool_sources, info_find_storage_pool_sources, 0}, + {"pool-autostart", cmdPoolAutostart, opts_pool_autostart, + info_pool_autostart, 0}, + {"pool-build", cmdPoolBuild, opts_pool_build, info_pool_build, 0}, + {"pool-create-as", cmdPoolCreateAs, opts_pool_X_as, info_pool_create_as, 0}, + {"pool-create", cmdPoolCreate, opts_pool_create, info_pool_create, 0}, + {"pool-define-as", cmdPoolDefineAs, opts_pool_X_as, info_pool_define_as, 0}, + {"pool-define", cmdPoolDefine, opts_pool_define, info_pool_define, 0}, + {"pool-delete", cmdPoolDelete, opts_pool_delete, info_pool_delete, 0}, + {"pool-destroy", cmdPoolDestroy, opts_pool_destroy, info_pool_destroy, 0}, + {"pool-dumpxml", cmdPoolDumpXML, opts_pool_dumpxml, info_pool_dumpxml, 0}, + {"pool-edit", cmdPoolEdit, opts_pool_edit, info_pool_edit, 0}, + {"pool-info", cmdPoolInfo, opts_pool_info, info_pool_info, 0}, + {"pool-list", cmdPoolList, opts_pool_list, info_pool_list, 0}, + {"pool-name", cmdPoolName, opts_pool_name, info_pool_name, 0}, + {"pool-refresh", cmdPoolRefresh, opts_pool_refresh, info_pool_refresh, 0}, + {"pool-start", cmdPoolStart, opts_pool_start, info_pool_start, 0}, + {"pool-undefine", cmdPoolUndefine, opts_pool_undefine, + info_pool_undefine, 0}, + {"pool-uuid", cmdPoolUuid, opts_pool_uuid, info_pool_uuid, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef storageVolCmds[] = { - {"vol-clone", cmdVolClone, opts_vol_clone, info_vol_clone}, - {"vol-create-as", cmdVolCreateAs, opts_vol_create_as, info_vol_create_as}, - {"vol-create", cmdVolCreate, opts_vol_create, info_vol_create}, - {"vol-create-from", cmdVolCreateFrom, opts_vol_create_from, info_vol_create_from}, - {"vol-delete", cmdVolDelete, opts_vol_delete, info_vol_delete}, - {"vol-dumpxml", cmdVolDumpXML, opts_vol_dumpxml, info_vol_dumpxml}, - {"vol-info", cmdVolInfo, opts_vol_info, info_vol_info}, - {"vol-key", cmdVolKey, opts_vol_key, info_vol_key}, - {"vol-list", cmdVolList, opts_vol_list, info_vol_list}, - {"vol-name", cmdVolName, opts_vol_name, info_vol_name}, - {"vol-path", cmdVolPath, opts_vol_path, info_vol_path}, - {"vol-pool", cmdVolPool, opts_vol_pool, info_vol_pool}, - {"vol-wipe", cmdVolWipe, opts_vol_wipe, info_vol_wipe}, - {NULL, NULL, NULL, NULL} + {"vol-clone", cmdVolClone, opts_vol_clone, info_vol_clone, 0}, + {"vol-create-as", cmdVolCreateAs, opts_vol_create_as, + info_vol_create_as, 0}, + {"vol-create", cmdVolCreate, opts_vol_create, info_vol_create, 0}, + {"vol-create-from", cmdVolCreateFrom, opts_vol_create_from, + info_vol_create_from, 0}, + {"vol-delete", cmdVolDelete, opts_vol_delete, info_vol_delete, 0}, + {"vol-dumpxml", cmdVolDumpXML, opts_vol_dumpxml, info_vol_dumpxml, 0}, + {"vol-info", cmdVolInfo, opts_vol_info, info_vol_info, 0}, + {"vol-key", cmdVolKey, opts_vol_key, info_vol_key, 0}, + {"vol-list", cmdVolList, opts_vol_list, info_vol_list, 0}, + {"vol-name", cmdVolName, opts_vol_name, info_vol_name, 0}, + {"vol-path", cmdVolPath, opts_vol_path, info_vol_path, 0}, + {"vol-pool", cmdVolPool, opts_vol_pool, info_vol_pool, 0}, + {"vol-wipe", cmdVolWipe, opts_vol_wipe, info_vol_wipe, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef networkCmds[] = { - {"net-autostart", cmdNetworkAutostart, opts_network_autostart, info_network_autostart}, - {"net-create", cmdNetworkCreate, opts_network_create, info_network_create}, - {"net-define", cmdNetworkDefine, opts_network_define, info_network_define}, - {"net-destroy", cmdNetworkDestroy, opts_network_destroy, info_network_destroy}, - {"net-dumpxml", cmdNetworkDumpXML, opts_network_dumpxml, info_network_dumpxml}, - {"net-edit", cmdNetworkEdit, opts_network_edit, info_network_edit}, - {"net-info", cmdNetworkInfo, opts_network_info, info_network_info}, - {"net-list", cmdNetworkList, opts_network_list, info_network_list}, - {"net-name", cmdNetworkName, opts_network_name, info_network_name}, - {"net-start", cmdNetworkStart, opts_network_start, info_network_start}, - {"net-undefine", cmdNetworkUndefine, opts_network_undefine, info_network_undefine}, - {"net-uuid", cmdNetworkUuid, opts_network_uuid, info_network_uuid}, - {NULL, NULL, NULL, NULL} + {"net-autostart", cmdNetworkAutostart, opts_network_autostart, + info_network_autostart, 0}, + {"net-create", cmdNetworkCreate, opts_network_create, + info_network_create, 0}, + {"net-define", cmdNetworkDefine, opts_network_define, + info_network_define, 0}, + {"net-destroy", cmdNetworkDestroy, opts_network_destroy, + info_network_destroy, 0}, + {"net-dumpxml", cmdNetworkDumpXML, opts_network_dumpxml, + info_network_dumpxml, 0}, + {"net-edit", cmdNetworkEdit, opts_network_edit, info_network_edit, 0}, + {"net-info", cmdNetworkInfo, opts_network_info, info_network_info, 0}, + {"net-list", cmdNetworkList, opts_network_list, info_network_list, 0}, + {"net-name", cmdNetworkName, opts_network_name, info_network_name, 0}, + {"net-start", cmdNetworkStart, opts_network_start, info_network_start, 0}, + {"net-undefine", cmdNetworkUndefine, opts_network_undefine, + info_network_undefine, 0}, + {"net-uuid", cmdNetworkUuid, opts_network_uuid, info_network_uuid, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef nodedevCmds[] = { - {"nodedev-create", cmdNodeDeviceCreate, opts_node_device_create, info_node_device_create}, - {"nodedev-destroy", cmdNodeDeviceDestroy, opts_node_device_destroy, info_node_device_destroy}, - {"nodedev-dettach", cmdNodeDeviceDettach, opts_node_device_dettach, info_node_device_dettach}, - {"nodedev-dumpxml", cmdNodeDeviceDumpXML, opts_node_device_dumpxml, info_node_device_dumpxml}, - {"nodedev-list", cmdNodeListDevices, opts_node_list_devices, info_node_list_devices}, - {"nodedev-reattach", cmdNodeDeviceReAttach, opts_node_device_reattach, info_node_device_reattach}, - {"nodedev-reset", cmdNodeDeviceReset, opts_node_device_reset, info_node_device_reset}, - {NULL, NULL, NULL, NULL} + {"nodedev-create", cmdNodeDeviceCreate, opts_node_device_create, + info_node_device_create, 0}, + {"nodedev-destroy", cmdNodeDeviceDestroy, opts_node_device_destroy, + info_node_device_destroy, 0}, + {"nodedev-dettach", cmdNodeDeviceDettach, opts_node_device_dettach, + info_node_device_dettach, 0}, + {"nodedev-dumpxml", cmdNodeDeviceDumpXML, opts_node_device_dumpxml, + info_node_device_dumpxml, 0}, + {"nodedev-list", cmdNodeListDevices, opts_node_list_devices, + info_node_list_devices, 0}, + {"nodedev-reattach", cmdNodeDeviceReAttach, opts_node_device_reattach, + info_node_device_reattach, 0}, + {"nodedev-reset", cmdNodeDeviceReset, opts_node_device_reset, + info_node_device_reset, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef ifaceCmds[] = { - {"iface-define", cmdInterfaceDefine, opts_interface_define, info_interface_define}, - {"iface-destroy", cmdInterfaceDestroy, opts_interface_destroy, info_interface_destroy}, - {"iface-dumpxml", cmdInterfaceDumpXML, opts_interface_dumpxml, info_interface_dumpxml}, - {"iface-edit", cmdInterfaceEdit, opts_interface_edit, info_interface_edit}, - {"iface-list", cmdInterfaceList, opts_interface_list, info_interface_list}, - {"iface-mac", cmdInterfaceMAC, opts_interface_mac, info_interface_mac}, - {"iface-name", cmdInterfaceName, opts_interface_name, info_interface_name}, - {"iface-start", cmdInterfaceStart, opts_interface_start, info_interface_start}, - {"iface-undefine", cmdInterfaceUndefine, opts_interface_undefine, info_interface_undefine}, - {NULL, NULL, NULL, NULL} + {"iface-define", cmdInterfaceDefine, opts_interface_define, + info_interface_define, 0}, + {"iface-destroy", cmdInterfaceDestroy, opts_interface_destroy, + info_interface_destroy, 0}, + {"iface-dumpxml", cmdInterfaceDumpXML, opts_interface_dumpxml, + info_interface_dumpxml, 0}, + {"iface-edit", cmdInterfaceEdit, opts_interface_edit, + info_interface_edit, 0}, + {"iface-list", cmdInterfaceList, opts_interface_list, + info_interface_list, 0}, + {"iface-mac", cmdInterfaceMAC, opts_interface_mac, + info_interface_mac, 0}, + {"iface-name", cmdInterfaceName, opts_interface_name, + info_interface_name, 0}, + {"iface-start", cmdInterfaceStart, opts_interface_start, + info_interface_start, 0}, + {"iface-undefine", cmdInterfaceUndefine, opts_interface_undefine, + info_interface_undefine, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef nwfilterCmds[] = { - {"nwfilter-define", cmdNWFilterDefine, opts_nwfilter_define, info_nwfilter_define}, - {"nwfilter-dumpxml", cmdNWFilterDumpXML, opts_nwfilter_dumpxml, info_nwfilter_dumpxml}, - {"nwfilter-edit", cmdNWFilterEdit, opts_nwfilter_edit, info_nwfilter_edit}, - {"nwfilter-list", cmdNWFilterList, opts_nwfilter_list, info_nwfilter_list}, - {"nwfilter-undefine", cmdNWFilterUndefine, opts_nwfilter_undefine, info_nwfilter_undefine}, - {NULL, NULL, NULL, NULL} + {"nwfilter-define", cmdNWFilterDefine, opts_nwfilter_define, + info_nwfilter_define, 0}, + {"nwfilter-dumpxml", cmdNWFilterDumpXML, opts_nwfilter_dumpxml, + info_nwfilter_dumpxml, 0}, + {"nwfilter-edit", cmdNWFilterEdit, opts_nwfilter_edit, + info_nwfilter_edit, 0}, + {"nwfilter-list", cmdNWFilterList, opts_nwfilter_list, + info_nwfilter_list, 0}, + {"nwfilter-undefine", cmdNWFilterUndefine, opts_nwfilter_undefine, + info_nwfilter_undefine, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef secretCmds[] = { - {"secret-define", cmdSecretDefine, opts_secret_define, info_secret_define}, - {"secret-dumpxml", cmdSecretDumpXML, opts_secret_dumpxml, info_secret_dumpxml}, - {"secret-get-value", cmdSecretGetValue, opts_secret_get_value, info_secret_get_value}, - {"secret-list", cmdSecretList, NULL, info_secret_list}, - {"secret-set-value", cmdSecretSetValue, opts_secret_set_value, info_secret_set_value}, - {"secret-undefine", cmdSecretUndefine, opts_secret_undefine, info_secret_undefine}, - {NULL, NULL, NULL, NULL} + {"secret-define", cmdSecretDefine, opts_secret_define, + info_secret_define, 0}, + {"secret-dumpxml", cmdSecretDumpXML, opts_secret_dumpxml, + info_secret_dumpxml, 0}, + {"secret-get-value", cmdSecretGetValue, opts_secret_get_value, + info_secret_get_value, 0}, + {"secret-list", cmdSecretList, NULL, info_secret_list, 0}, + {"secret-set-value", cmdSecretSetValue, opts_secret_set_value, + info_secret_set_value, 0}, + {"secret-undefine", cmdSecretUndefine, opts_secret_undefine, + info_secret_undefine, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef virshCmds[] = { #ifndef WIN32 - {"cd", cmdCd, opts_cd, info_cd}, + {"cd", cmdCd, opts_cd, info_cd, VSH_CMD_FLAG_NOCONNECT}, #endif - {"echo", cmdEcho, opts_echo, info_echo}, - {"exit", cmdQuit, NULL, info_quit}, - {"help", cmdHelp, opts_help, info_help}, + {"echo", cmdEcho, opts_echo, info_echo, VSH_CMD_FLAG_NOCONNECT}, + {"exit", cmdQuit, NULL, info_quit, VSH_CMD_FLAG_NOCONNECT}, + {"help", cmdHelp, opts_help, info_help, VSH_CMD_FLAG_NOCONNECT}, #ifndef WIN32 - {"pwd", cmdPwd, NULL, info_pwd}, + {"pwd", cmdPwd, NULL, info_pwd, VSH_CMD_FLAG_NOCONNECT}, #endif - {"quit", cmdQuit, NULL, info_quit}, - {NULL, NULL, NULL, NULL} + {"quit", cmdQuit, NULL, info_quit, VSH_CMD_FLAG_NOCONNECT}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef snapshotCmds[] = { - {"snapshot-create", cmdSnapshotCreate, opts_snapshot_create, info_snapshot_create}, - {"snapshot-current", cmdSnapshotCurrent, opts_snapshot_current, info_snapshot_current}, - {"snapshot-delete", cmdSnapshotDelete, opts_snapshot_delete, info_snapshot_delete}, - {"snapshot-dumpxml", cmdSnapshotDumpXML, opts_snapshot_dumpxml, info_snapshot_dumpxml}, - {"snapshot-list", cmdSnapshotList, opts_snapshot_list, info_snapshot_list}, - {"snapshot-revert", cmdDomainSnapshotRevert, opts_snapshot_revert, info_snapshot_revert}, - {NULL, NULL, NULL, NULL} + {"snapshot-create", cmdSnapshotCreate, opts_snapshot_create, + info_snapshot_create, 0}, + {"snapshot-current", cmdSnapshotCurrent, opts_snapshot_current, + info_snapshot_current, 0}, + {"snapshot-delete", cmdSnapshotDelete, opts_snapshot_delete, + info_snapshot_delete, 0}, + {"snapshot-dumpxml", cmdSnapshotDumpXML, opts_snapshot_dumpxml, + info_snapshot_dumpxml, 0}, + {"snapshot-list", cmdSnapshotList, opts_snapshot_list, + info_snapshot_list, 0}, + {"snapshot-revert", cmdDomainSnapshotRevert, opts_snapshot_revert, + info_snapshot_revert, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdDef hostAndHypervisorCmds[] = { - {"capabilities", cmdCapabilities, NULL, info_capabilities}, - {"connect", cmdConnect, opts_connect, info_connect}, - {"freecell", cmdFreecell, opts_freecell, info_freecell}, - {"hostname", cmdHostname, NULL, info_hostname}, - {"nodeinfo", cmdNodeinfo, NULL, info_nodeinfo}, - {"qemu-monitor-command", cmdQemuMonitorCommand, opts_qemu_monitor_command, info_qemu_monitor_command}, - {"sysinfo", cmdSysinfo, NULL, info_sysinfo}, - {"uri", cmdURI, NULL, info_uri}, - {NULL, NULL, NULL, NULL} + {"capabilities", cmdCapabilities, NULL, info_capabilities, 0}, + {"connect", cmdConnect, opts_connect, info_connect, + VSH_CMD_FLAG_NOCONNECT}, + {"freecell", cmdFreecell, opts_freecell, info_freecell, 0}, + {"hostname", cmdHostname, NULL, info_hostname, 0}, + {"nodeinfo", cmdNodeinfo, NULL, info_nodeinfo, 0}, + {"qemu-monitor-command", cmdQemuMonitorCommand, opts_qemu_monitor_command, + info_qemu_monitor_command, 0}, + {"sysinfo", cmdSysinfo, NULL, info_sysinfo, 0}, + {"uri", cmdURI, NULL, info_uri, 0}, + {NULL, NULL, NULL, NULL, 0} }; static const vshCmdGrp cmdGroups[] = { @@ -11380,7 +11447,8 @@ vshCommandRun(vshControl *ctl, const vshCmd *cmd) struct timeval before, after; bool enable_timing = ctl->timing; - if ((ctl->conn == NULL) || (disconnected != 0)) + if ((ctl->conn == NULL || disconnected) && + !(cmd->def->flags & VSH_CMD_FLAG_NOCONNECT)) vshReconnect(ctl); if (enable_timing) @@ -11840,19 +11908,22 @@ vshInit(vshControl *ctl) if (virEventRegisterDefaultImpl() < 0) return FALSE; - ctl->conn = virConnectOpenAuth(ctl->name, - virConnectAuthPtrDefault, - ctl->readonly ? VIR_CONNECT_RO : 0); - + if (ctl->name) { + ctl->conn = virConnectOpenAuth(ctl->name, + virConnectAuthPtrDefault, + ctl->readonly ? VIR_CONNECT_RO : 0); - /* This is not necessarily fatal. All the individual commands check - * vshConnectionUsability, except ones which don't need a connection - * such as "help". - */ - if (!ctl->conn) { - virshReportError(ctl); - vshError(ctl, "%s", _("failed to connect to the hypervisor")); - return FALSE; + /* Connecting to a named connection must succeed, but we delay + * connecting to the default connection until we need it + * (since the first command might be 'connect' which allows a + * non-default connection, or might be 'help' which needs no + * connection). + */ + if (!ctl->conn) { + virshReportError(ctl); + vshError(ctl, "%s", _("failed to connect to the hypervisor")); + return FALSE; + } } return TRUE; -- 1.7.4