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migration: check pre_save return in vmstate_save_state

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Check the return value of pre_save state and fail vmstate_save_state
if the pre_save failed.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170925112917.21340-3-dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert
2017-09-25 12:29:13 +01:00
parent 44b1ff319c
commit 551dbd0846
3 changed files with 13 additions and 4 deletions
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4
include/migration/vmstate.h
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@@ -994,8 +994,8 @@ extern const VMStateInfo vmstate_info_qtailq;
int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, int version_id);
void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, QJSON *vmdesc);
int vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
void *opaque, QJSON *vmdesc);
bool vmstate_save_needed(const VMStateDescription *vmsd, void *opaque);