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authorPeter Xu <peterx@redhat.com>2016-02-18 13:16:49 +0800
committerPaolo Bonzini <pbonzini@redhat.com>2016-02-22 18:40:28 +0100
commit65d64f362326a57b590b8b76e3422030a2aa5c44 (patch)
tree625299fda2cd5b6bd8f213b1603b0bd0905613df /dump.c
parentbaf28f57e2dec63eebfcd3c00f8d4dea9fcde21e (diff)
dump-guest-memory: add dump_in_progress() helper function
For now, it has no effect. It will be used in dump detach support. Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Message-Id: <1455772616-8668-5-git-send-email-peterx@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'dump.c')
-rw-r--r--dump.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/dump.c b/dump.c
index 434bc60bc9..158d6ea915 100644
--- a/dump.c
+++ b/dump.c
@@ -1450,6 +1450,12 @@ static void dump_state_prepare(DumpState *s)
*s = (DumpState) { .status = DUMP_STATUS_ACTIVE };
}
+bool dump_in_progress(void)
+{
+ DumpState *state = &dump_state_global;
+ return (state->status == DUMP_STATUS_ACTIVE);
+}
+
static void dump_init(DumpState *s, int fd, bool has_format,
DumpGuestMemoryFormat format, bool paging, bool has_filter,
int64_t begin, int64_t length, Error **errp)
@@ -1628,6 +1634,13 @@ void qmp_dump_guest_memory(bool paging, const char *file,
DumpState *s;
Error *local_err = NULL;
+ /* if there is a dump in background, we should wait until the dump
+ * finished */
+ if (dump_in_progress()) {
+ error_setg(errp, "There is a dump in process, please wait.");
+ return;
+ }
+
/*
* kdump-compressed format need the whole memory dumped, so paging or
* filter is not supported here.