4:13 p.m.
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.