Re: [libvirt] [PATCH 08/12] qemu: introduce 2 functions for attach a rng object in json monitor

We need a new function to build a RNG device object, and need a function to build a props which will be used in qemuMonitorJSONAddObject. Signed-off-by: Luyao Huang <lhuang(a)redhat.com&gt; --- src/qemu/qemu_monitor_json.c | 58 ++++++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_monitor_json.h | 5 ++++ 2 files changed, 63 insertions(+) diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index e567aa7..4430819 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -6166,6 +6166,64 @@ qemuMonitorJSONDetachCharDev(qemuMonitorPtr mon, return ret; } +static virJSONValuePtr +qemuMonitorJSONRNGPropsCommand(const char *name, + const char *data) +{ + virJSONValuePtr ret; + + if (!(ret = virJSONValueNewObject())) + goto error; + + if (virJSONValueObjectAppendString(ret, name, data) < 0) + goto error; + + return ret; + + error: + virJSONValueFree(ret); + return NULL; +}

+ +int +qemuMonitorJSONAttachRNGDev(qemuMonitorPtr mon, + const char *chrID, + const char *objID, + virDomainRNGDefPtr rng) +{ + const char *type = NULL; + virJSONValuePtr props = NULL; + + switch ((virDomainRNGBackend) rng->backend) { + case VIR_DOMAIN_RNG_BACKEND_RANDOM: + type = "rng-random"; + if (!(props = qemuMonitorJSONRNGPropsCommand("filename", rng->source.file)))

+ goto cleanup; + break; + + case VIR_DOMAIN_RNG_BACKEND_EGD: + if (!chrID) { + virReportError(VIR_ERR_INTERNAL_ERROR,"%s", + _("miss chardev id")); + goto cleanup; + }

+ type = "rng-egd"; + if (!(props = qemuMonitorJSONRNGPropsCommand("chardev", chrID))) + goto cleanup; + break; + + case VIR_DOMAIN_RNG_BACKEND_LAST: + /*shouldn't happen*/ + goto cleanup; + } + + return qemuMonitorJSONAddObject(mon, type, objID, props); + + cleanup: + virJSONValueFree(props); + return -1; +} + int