[libvirt] [PATCH 3/4] Add a new 'virsh qemu-attach' command.
This command allows libvirt to attach to an existing QEMU
instance.
$ qemu-kvm -cdrom ~/demo.iso \
-monitor unix:/tmp/demo,server,nowait \
-name foo \
-uuid cece4f9f-dff0-575d-0e8e-01fe380f12ea &
$ QEMUPID=$$
$ virsh qemu-attach $QEMUPID
---
tools/virsh.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/tools/virsh.c b/tools/virsh.c
index 5d8b025..e7122eb 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -10679,6 +10679,52 @@ cleanup:
return ret;
}
+/*
+ * "qemu-attach" command
+ */
+static const vshCmdInfo info_qemu_attach[] = {
+ {"help", N_("Qemu Attach")},
+ {"desc", N_("Qemu Attach")},
+ {NULL, NULL}
+};
+
+static const vshCmdOptDef opts_qemu_attach[] = {
+ {"pid", VSH_OT_DATA, VSH_OFLAG_REQ, N_("pid")},
+ {NULL, 0, 0, NULL}
+};
+
+static bool
+cmdQemuAttach(vshControl *ctl, const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ unsigned int flags = 0;
+ int pid;
+
+ if (!vshConnectionUsability(ctl, ctl->conn))
+ goto cleanup;
+
+ if (vshCommandOptInt(cmd, "pid", &pid) < 0) {
+ vshError(ctl, "%s", _("missing pid value"));
+ goto cleanup;
+ }
+
+ if (!(dom = virDomainQemuAttach(ctl->conn, pid, flags)))
+ goto cleanup;
+
+ if (dom != NULL) {
+ vshPrint(ctl, _("Domain %s attached to pid %d\n"),
+ virDomainGetName(dom), pid);
+ virDomainFree(dom);
+ ret = true;
+ } else {
+ vshError(ctl, _("Failed to attach to pid %d"), pid);
+ }
+
+cleanup:
+ return ret;
+}
+
static const vshCmdDef domManagementCmds[] = {
{"attach-device", cmdAttachDevice, opts_attach_device,
info_attach_device},
{"attach-disk", cmdAttachDisk, opts_attach_disk, info_attach_disk},
@@ -10875,6 +10921,7 @@ static const vshCmdDef hostAndHypervisorCmds[] = {
{"hostname", cmdHostname, NULL, info_hostname},
{"nodeinfo", cmdNodeinfo, NULL, info_nodeinfo},
{"qemu-monitor-command", cmdQemuMonitorCommand, opts_qemu_monitor_command,
info_qemu_monitor_command},
+ {"qemu-attach", cmdQemuAttach, opts_qemu_attach, info_qemu_attach},
{"sysinfo", cmdSysinfo, NULL, info_sysinfo},
{"uri", cmdURI, NULL, info_uri},
{NULL, NULL, NULL, NULL}
--
1.7.4.4