Re: [libvirt] [PATCHv2 4/5] domifaddr: Add virsh support

Use virDomainInterfacesAddresses in virsh tools/virsh-domain-monitor.c * Introduce new command : domifaddr Example Usage: domifaddr <domain> [interface] tools/virsh.pod * Document new command --- tools/virsh-domain-monitor.c | 102 +++++++++++++++++++++++++++++++++++++++++++ tools/virsh.pod | 10 +++++ 2 files changed, 112 insertions(+) diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c index b29b82a..bc21c4d 100644 --- a/tools/virsh-domain-monitor.c +++ b/tools/virsh-domain-monitor.c @@ -1871,6 +1871,102 @@ cleanup: } #undef FILTER +/* "domifaddr" command + */ +static const vshCmdInfo info_domifaddr[] = { + {"help", N_("Get network interfaces' addresses for a running domain")}, + {"desc", N_("Get network interfaces' addresses for a running domain")}, + {NULL, NULL} +}; + +static const vshCmdOptDef opts_domifaddr[] = { + {"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")}, + {"interface", VSH_OT_DATA, VSH_OFLAG_NONE, N_("network interface name")}, + {NULL, 0, 0, NULL} +}; + +static bool +cmdDomIfAddr(vshControl *ctl, const vshCmd *cmd) +{ + virDomainPtr dom = NULL; + const char *interface = NULL; + virDomainInterfacePtr ifaces = NULL; + size_t i, j; + unsigned int ifaces_count = 0; + unsigned int flags = 0; + bool ret = false; + + if (!(dom = vshCommandOptDomain(ctl, cmd, NULL))) + return false; + + if (vshCommandOptString(cmd, "interface", &interface) < 0) { + goto cleanup; + } + + if (virDomainInterfacesAddresses(dom, &ifaces, &ifaces_count, flags) < 0) { + vshError(ctl, _("Failed to query for interfaces addresses")); + goto cleanup; + } + + vshPrintExtra(ctl, " %-10s %-17s %s\n%s\n", + _("Name"), _("MAC address"), _("IP address"), + "---------------------------------------------------"); + + for (i = 0; i < ifaces_count; i++) { + virDomainInterfacePtr iface = &(ifaces[i]); + virBuffer buf = VIR_BUFFER_INITIALIZER; + const char *hwaddr = ""; + const char *ip_addr_str = NULL; + + if (interface && STRNEQ(interface, iface->name)) { + virBufferFreeAndReset(&buf); + continue; + } + + if (iface->hwaddr) + hwaddr = iface->hwaddr; + + for (j = 0; j < iface->ip_addrs_count; j++) { + if (j) + virBufferAddChar(&buf, ' '); + virBufferAsprintf(&buf, "%s/%d", + iface->ip_addrs[j].addr, + iface->ip_addrs[j].prefix); + } + + if (virBufferError(&buf)) { + virBufferFreeAndReset(&buf); + virReportOOMError(); + return ret; + } + + ip_addr_str = virBufferContentAndReset(&buf); + + if (!ip_addr_str) + ip_addr_str = ""; + + vshPrintExtra(ctl, " %-10s %-17s %s\n", + iface->name, hwaddr, ip_addr_str); + + virBufferFreeAndReset(&buf); + } + + ret = true; + +cleanup: + for (i = 0; i < ifaces_count; i++) { + VIR_FREE(ifaces[i].name); + VIR_FREE(ifaces[i].hwaddr); + for (j = 0; j < ifaces[i].ip_addrs_count; j++) + VIR_FREE(ifaces[i].ip_addrs[j].addr); + VIR_FREE(ifaces[i].ip_addrs); + } + VIR_FREE(ifaces); + + virDomainFree(dom); + return ret; +} + const vshCmdDef domMonitoringCmds[] = { {.name = "domblkerror", .handler = cmdDomBlkError, @@ -1944,5 +2040,11 @@ const vshCmdDef domMonitoringCmds[] = { .info = info_list, .flags = 0 }, + {.name = "domifaddr", + .handler = cmdDomIfAddr, + .opts = opts_domifaddr, + .info = info_domifaddr, + .flags = 0 + }, {.name = NULL} }; diff --git a/tools/virsh.pod b/tools/virsh.pod index 3ff6da1..943e61f 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -633,6 +633,16 @@ B<Explanation of fields> (fields appear in the following order): flush_total_times - total time flush operations took (ns) <-- other fields provided by hypervisor --> + +=item B<domifaddr> I<domain> [I<interface>] + +Get a list of interfaces of a running domain along with their IP and MAC +addresses, or limited output just for one interface if I<interface> is +specified. Note, that I<interface> can be driver dependent, it can be +the name within guest OS or the name you would see in domain XML. +Moreover, the whole command may require a guest agent to be configured +for the queried domain under some drivers, notably qemu. + =item B<domifstat> I<domain> I<interface-device> Get network interface stats for a running domain.