[libvirt] [PATCH v3 1/2] qemu: implementing qemuAgentGetHostname() function.

This commit implements the function qemuAgentGetHostname() that uses the QEMU command 'guest-get-host-name' to retrieve the guest hostname of Virtual Machine. It is a possibility where QEMU-GA is running. Signed-off-by: Julio Faracco <jcfaracco(a)gmail.com&gt; --- src/qemu/qemu_agent.c | 39 +++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_agent.h | 4 ++++ 2 files changed, 43 insertions(+) diff --git a/src/qemu/qemu_agent.c b/src/qemu/qemu_agent.c index bf08871f18..7aba4ed366 100644 --- a/src/qemu/qemu_agent.c +++ b/src/qemu/qemu_agent.c @@ -1682,6 +1682,45 @@ qemuAgentUpdateCPUInfo(unsigned int nvcpus, return 0; } +int +qemuAgentGetHostname(qemuAgentPtr mon, + char **hostname) +{ + int ret = -1; + virJSONValuePtr cmd; + virJSONValuePtr reply = NULL; + virJSONValuePtr data = 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 (!(data = virJSONValueObjectGet(reply, "return"))) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("malformed return value")); + goto cleanup; + } + + if (VIR_STRDUP(*hostname, + virJSONValueObjectGetString(data, "host-name")) <= 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, "%s", + _("'host-name' missing in reply of guest-get-host-name")); + goto cleanup; + } + + ret = 0; + + cleanup: + virJSONValueFree(cmd); + virJSONValueFree(reply); + return ret; +} int qemuAgentGetTime(qemuAgentPtr mon, 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