[libvirt] [PATCH v4 1/4] qemu: implementing qemuAgentGetHostname() function.
This commit implements the function qemuAgentGetHostname() that uses
the QEMU guest agent command 'guest-get-host-name' to retrieve the
guest hostname of virtual machine running the QEMU-GA.
Signed-off-by: Julio Faracco <jcfaracco(a)gmail.com>
---
src/qemu/qemu_agent.c | 47 +++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_agent.h | 4 ++++
2 files changed, 51 insertions(+)
diff --git a/src/qemu/qemu_agent.c b/src/qemu/qemu_agent.c
index bf08871f18..ac728becef 100644
--- a/src/qemu/qemu_agent.c
+++ b/src/qemu/qemu_agent.c
@@ -1683,6 +1683,53 @@ qemuAgentUpdateCPUInfo(unsigned int nvcpus,
}
+int
+qemuAgentGetHostname(qemuAgentPtr mon,
+ char **hostname)
+{
+ int ret = -1;
+ virJSONValuePtr cmd;
+ virJSONValuePtr reply = NULL;
+ virJSONValuePtr data = NULL;
+ const char *result = NULL;
+
+ cmd = qemuAgentMakeCommand("guest-get-host-name",
+ NULL);
+
+ if (!cmd)
+ return ret;
+
+ if (qemuAgentCommand(mon, cmd, &reply, true,
+ VIR_DOMAIN_QEMU_AGENT_COMMAND_BLOCK) < 0)
+ goto cleanup;
+
+ if (qemuAgentCheckError(cmd, reply) < 0)
+ goto cleanup;
+
+ if (!(data = virJSONValueObjectGet(reply, "return"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("malformed return value"));
+ goto cleanup;
+ }
+
+ if (!(result = virJSONValueObjectGetString(data, "host-name"))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("'host-name' missing in guest-get-host-name
reply"));
+ goto cleanup;
+ }
+
+ if (VIR_STRDUP(*hostname, result) < 0)
+ goto cleanup;
+
+ ret = 0;
+
+ cleanup:
+ virJSONValueFree(cmd);
+ virJSONValueFree(reply);
+ return ret;
+}
+
+
int
qemuAgentGetTime(qemuAgentPtr mon,
long long *seconds,
diff --git a/src/qemu/qemu_agent.h b/src/qemu/qemu_agent.h
index 6dd9c702dd..4354b7e0cf 100644
--- a/src/qemu/qemu_agent.h
+++ b/src/qemu/qemu_agent.h
@@ -105,6 +105,10 @@ int qemuAgentUpdateCPUInfo(unsigned int nvcpus,
qemuAgentCPUInfoPtr cpuinfo,
int ncpuinfo);
+int
+qemuAgentGetHostname(qemuAgentPtr mon,
+ char **hostname);
+
int qemuAgentGetTime(qemuAgentPtr mon,
long long *seconds,
unsigned int *nseconds);
--
2.17.1