[libvirt] [PATCH v4 4/9] qemu: Introduce nbd-server-add command

This will be used with new migration scheme. This patch creates basically just monitor stub functions. Wiring them into something useful is done in later patches. --- src/qemu/qemu_monitor.c | 22 ++++++++++++++++++++++ src/qemu/qemu_monitor.h | 3 +++ src/qemu/qemu_monitor_json.c | 25 +++++++++++++++++++++++++ src/qemu/qemu_monitor_json.h | 3 +++ 4 files changed, 53 insertions(+) diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c index c7aa6d0..5abd9d0 100644 --- a/src/qemu/qemu_monitor.c +++ b/src/qemu/qemu_monitor.c @@ -3405,3 +3405,25 @@ int qemuMonitorNBDServerStart(qemuMonitorPtr mon, return qemuMonitorJSONNBDServerStart(mon, host, port); } + +int qemuMonitorNBDServerAdd(qemuMonitorPtr mon, + const char *deviceID, + bool writable) +{ + VIR_DEBUG("mon=%p deviceID=%s", + mon, deviceID); + + if (!mon) { + virReportError(VIR_ERR_INVALID_ARG, "%s", + _("monitor must not be NULL")); + return -1; + } + + if (!mon->json) { + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s", + _("JSON monitor is required")); + return -1; + } + + return qemuMonitorJSONNBDServerAdd(mon, deviceID, writable); +} diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h index 230f920..d54d16d 100644 --- a/src/qemu/qemu_monitor.h +++ b/src/qemu/qemu_monitor.h @@ -635,6 +635,9 @@ char *qemuMonitorGetTargetArch(qemuMonitorPtr mon); int qemuMonitorNBDServerStart(qemuMonitorPtr mon, const char *host, unsigned int port); +int qemuMonitorNBDServerAdd(qemuMonitorPtr mon, + const char *deviceID, + bool writable); /** * When running two dd process and using <> redirection, we need a * shell that will not truncate files. These two strings serve that diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index e03688d..f14b597 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -4415,3 +4415,28 @@ cleanup: virJSONValueFree(data); return ret; } + +int +qemuMonitorJSONNBDServerAdd(qemuMonitorPtr mon, + const char *deviceID, + bool writable) +{ + int ret = -1; + virJSONValuePtr cmd; + virJSONValuePtr reply = NULL; + + if (!(cmd = qemuMonitorJSONMakeCommand("nbd-server-add", + "s:device", deviceID, + "b:writable", writable, + NULL))) + return ret; + + ret = qemuMonitorJSONCommand(mon, cmd, &reply); + + if (ret == 0) + ret = qemuMonitorJSONCheckError(cmd, reply); + + virJSONValueFree(cmd); + virJSONValueFree(reply); + return ret; +} diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h index a6ab68b..c58aa7d 100644 --- a/src/qemu/qemu_monitor_json.h +++ b/src/qemu/qemu_monitor_json.h @@ -330,4 +330,7 @@ char *qemuMonitorJSONGetTargetArch(qemuMonitorPtr mon); int qemuMonitorJSONNBDServerStart(qemuMonitorPtr mon, const char *host, unsigned int port); +int qemuMonitorJSONNBDServerAdd(qemuMonitorPtr mon, + const char *deviceID, + bool writable); #endif /* QEMU_MONITOR_JSON_H */ -- 1.8.1.2