[libvirt] [PATCH RFC 2/4] qemu-agent: Create suspend function
which allows guest to enter one of these modes:
-hibernation: RAM is stored onto disk and guest is powered off (S4)
-sleep: RAM stays powered, but CPUs are powered off (S3)
-hybrid: RAM is stored onto disk but guest is not powered off
---
src/qemu/qemu_agent.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_agent.h | 11 +++++++
2 files changed, 81 insertions(+), 0 deletions(-)
diff --git a/src/qemu/qemu_agent.c b/src/qemu/qemu_agent.c
index 536724f..f2cae94 100644
--- a/src/qemu/qemu_agent.c
+++ b/src/qemu/qemu_agent.c
@@ -1219,3 +1219,73 @@ void qemuAgentSetSupportedLevel(qemuAgentPtr mon,
mon->version = version;
qemuAgentUnlock(mon);
}
+
+static int
+qemuAgentSetSupportedLevelCommand(qemuAgentPtr mon)
+{
+ int ret = -1;
+ virJSONValuePtr cmd;
+ virJSONValuePtr reply = NULL;
+ unsigned int major, minor, micro;
+ unsigned int version = mon->version;
+
+ if (version < 1000*1000) {
+ qemuReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Invalid qemu version set: %u"),
+ version);
+ return -1;
+ }
+
+ major = version / (1000 * 1000);
+ version %= 1000*1000;
+ minor = version / 1000;
+ version %= 1000;
+ micro = version;
+
+ cmd = qemuAgentMakeCommand("guest-set-support-level",
+ "u:major", major,
+ "u:minor", minor,
+ "u:micro", micro,
+ NULL);
+ if (!cmd)
+ return -1;
+
+ ret = qemuAgentCommand(mon, cmd, &reply);
+
+ if (ret == 0)
+ ret = qemuAgentCheckError(cmd, reply);
+
+ virJSONValueFree(cmd);
+ virJSONValueFree(reply);
+ return ret;
+}
+
+VIR_ENUM_DECL(qemuAgentSuspendMode);
+
+VIR_ENUM_IMPL(qemuAgentSuspendMode,
+ QEMU_AGENT_SUSPEND_LAST,
+ "hibernate", "sleep", "hybrid");
+
+int qemuAgentSuspend(qemuAgentPtr mon,
+ qemuAgentSuspendMode mode)
+{
+ int ret = -1;
+ virJSONValuePtr cmd;
+ virJSONValuePtr reply = NULL;
+
+ cmd = qemuAgentMakeCommand("guest-suspend",
+ "s:mode",
qemuAgentSuspendModeTypeToString(mode),
+ NULL);
+ if (!cmd)
+ return -1;
+
+ /* XXX Unconditionally set supported level until
+ * qemu learns to keep this information */
+ if ((ret = qemuAgentSetSupportedLevelCommand(mon)) == 0 &&
+ (ret = qemuAgentCommand(mon, cmd, &reply)) == 0)
+ ret = qemuAgentCheckError(cmd, reply);
+
+ virJSONValueFree(cmd);
+ virJSONValueFree(reply);
+ return ret;
+}
diff --git a/src/qemu/qemu_agent.h b/src/qemu/qemu_agent.h
index 2858207..56e5573 100644
--- a/src/qemu/qemu_agent.h
+++ b/src/qemu/qemu_agent.h
@@ -71,4 +71,15 @@ int qemuAgentFSThaw(qemuAgentPtr mon);
void qemuAgentSetSupportedLevel(qemuAgentPtr mon,
unsigned int version);
+
+typedef enum {
+ QEMU_AGENT_SUSPEND_HIBERNATE,
+ QEMU_AGENT_SUSPEND_SLEEP,
+ QEMU_AGENT_SUSPEND_HYBRID,
+
+ QEMU_AGENT_SUSPEND_LAST,
+} qemuAgentSuspendMode;
+
+int qemuAgentSuspend(qemuAgentPtr mon,
+ qemuAgentSuspendMode mode);
#endif /* __QEMU_AGENT_H__ */
--
1.7.3.4