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dump-guest-memory: add dump_in_progress() helper function

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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>
This commit is contained in:
Peter Xu 2016-02-18 13:16:49 +08:00 • committed by Paolo Bonzini
parent baf28f57e2
commit 65d64f3623
3 changed files with 31 additions and 0 deletions
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13
dump.c
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@ -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.