
On 24/07/13 19:07, nehaljwani wrote:
Use virDomainInterfacesAddresses in virsh
tools/virsh-domain-monitor.c * Introduce new command : domifaddr Example Usage: domifaddr <domain-name> <interface-name (optional)>
As a habit, we indicate the optional optinon of command like: domifaddr <domain> [interface]
tools/virsh.pod * Document new command
--- tools/virsh-domain-monitor.c | 103 +++++++++++++++++++++++++++++++++++++++++++ tools/virsh.pod | 10 +++++ 2 files changed, 113 insertions(+)
diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c index 773f96d..d85dfbd 100644 --- a/tools/virsh-domain-monitor.c +++ b/tools/virsh-domain-monitor.c @@ -1873,6 +1873,103 @@ cleanup: } #undef FILTER
+/* "domifaddr" command + */ +static const vshCmdInfo info_domifaddr[] = { + {"help", N_("Get network interfaces addresses for a running domain")},
not sure if it should be interfaces' instead of interfaces.
+ {"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; + [1]
+ 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_NULLABLE(interface, iface->name)) {
My bad, I shouldn't tell you to use STRNEQ_NULLABLE here, because iface->name must be NOT NULL, and checking interface is NULL or not has logical meaning (wheter [interface] is specified, it makes code more readable). This sentense should be written as: if (interface && STRNEQ(interface, iface->name) continue;
+ 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); + + if (dom) + virDomainFree(dom);
see [1], "dom" must be not NULL as long as it went to here. So no need for the checking.
+ return ret; +} + const vshCmdDef domMonitoringCmds[] = { {.name = "domblkerror", .handler = cmdDomBlkError, @@ -1946,5 +2043,11 @@ 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..bf13be4 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-device>]
s/interface-device/interface/, since you are using "interface" instead of "interface-device" in the code. +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} Otherwise, the help document from "virsh help domifaddr" and in virsh.pod are different.
+ +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-device>
Like above.
+is specified. Note, that I<interface-device> can be driver dependent, it can
Like above.
+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.