3:48 p.m.
Support arbitrary callbacks for "secondary prompts". Reimplement
qemudMonitorCommandExtra using such a callback.
---
src/qemu_driver.c | 84 +++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 72 insertions(+), 12 deletions(-)
diff --git a/src/qemu_driver.c b/src/qemu_driver.c
index 68c2061..adce809 100644
--- a/src/qemu_driver.c
+++ b/src/qemu_driver.c
@@ -88,6 +88,12 @@ static void qemuDriverUnlock(struct qemud_driver *driver)
virMutexUnlock(&driver->lock);
}
+/* Return -1 for error, 0 for success */
+typedef int qemudMonitorExtraPromptHandler(const virDomainObjPtr vm,
+ const char *buf,
+ const char *prompt,
+ void *data);
+
static void qemuDomainEventFlush(int timer, void *opaque);
static void qemuDomainEventQueue(struct qemud_driver *driver,
virDomainEventPtr event);
@@ -116,6 +122,13 @@ static int qemudMonitorCommandWithFd(const virDomainObjPtr vm,
const char *cmd,
int scm_fd,
char **reply);
+static int qemudMonitorCommandWithHandler(const virDomainObjPtr vm,
+ const char *cmd,
+ const char *extraPrompt,
+ qemudMonitorExtraPromptHandler extraHandler,
+ void *handlerData,
+ int scm_fd,
+ char **reply);
static int qemudMonitorCommandExtra(const virDomainObjPtr vm,
const char *cmd,
const char *extra,
@@ -2415,12 +2428,13 @@ out:
}
static int
-qemudMonitorCommandExtra(const virDomainObjPtr vm,
- const char *cmd,
- const char *extra,
- const char *extraPrompt,
- int scm_fd,
- char **reply) {
+qemudMonitorCommandWithHandler(const virDomainObjPtr vm,
+ const char *cmd,
+ const char *extraPrompt,
+ qemudMonitorExtraPromptHandler extraHandler,
+ void *handlerData,
+ int scm_fd,
+ char **reply) {
int size = 0;
char *buf = NULL;
@@ -2464,12 +2478,20 @@ qemudMonitorCommandExtra(const virDomainObjPtr vm,
/* Look for QEMU prompt to indicate completion */
if (buf) {
- if (extra) {
- if (strstr(buf, extraPrompt) != NULL) {
- if (qemudMonitorSend(vm, extra, -1) < 0)
- return -1;
- extra = NULL;
- }
+ char *foundPrompt;
+
+ if (extraPrompt &&
+ (foundPrompt = strstr(buf, extraPrompt)) != NULL) {
+ char *promptEnd;
+
+ if (extraHandler(vm, buf, foundPrompt, handlerData) < 0)
+ return -1;
+ /* Discard output so far, necessary to detect whether
+ extraPrompt appears again. We don't need the output between
+ original command and this prompt anyway. */
+ promptEnd = foundPrompt + strlen(extraPrompt);
+ memmove(buf, promptEnd, strlen(promptEnd)+1);
+ size -= promptEnd - buf;
} else if ((tmp = strstr(buf, QEMU_CMD_PROMPT)) != NULL) {
char *commptr = NULL, *nlptr = NULL;
/* Preserve the newline */
@@ -2507,6 +2529,44 @@ qemudMonitorCommandExtra(const virDomainObjPtr vm,
return -1;
}
+struct extraHandlerData
+{
+ const char *reply;
+ bool first;
+};
+
+static int
+qemudMonitorCommandSimpleExtraHandler(const virDomainObjPtr vm,
+ const char *buf ATTRIBUTE_UNUSED,
+ const char *prompt ATTRIBUTE_UNUSED,
+ void *data_)
+{
+ struct extraHandlerData *data = data_;
+
+ if (!data->first)
+ return 0;
+ if (qemudMonitorSend(vm, data->reply, -1) < 0)
+ return -1;
+ data->first = false;
+ return 0;
+}
+
+static int
+qemudMonitorCommandExtra(const virDomainObjPtr vm,
+ const char *cmd,
+ const char *extra,
+ const char *extraPrompt,
+ int scm_fd,
+ char **reply) {
+ struct extraHandlerData data;
+
+ data.reply = extra;
+ data.first = true;
+ return qemudMonitorCommandWithHandler(vm, cmd, extraPrompt,
+ qemudMonitorCommandSimpleExtraHandler,
+ &data, scm_fd, reply);
+}
+
static int
qemudMonitorCommandWithFd(const virDomainObjPtr vm,
const char *cmd,
--
1.6.2.5