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migration: Truncate state file in xen-save-devices-state 

When running the xen-save-devices-state QMP command, if the filename
already exists it will be truncated before dumping the devices' state
into it.

Signed-off-by: Dov Murik <dovmurik@linux.vnet.ibm.com>
Message-Id: <20200921094830.114028-1-dovmurik@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
master
Dov Murik 2020-09-21 09:48:30 +00:00 committed by Dr. David Alan Gilbert
parent 3c0b5dffc1
commit b4deb9bf8d
1 changed files with 2 additions and 1 deletions
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3
migration/savevm.c
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@ -2803,7 +2803,8 @@ void qmp_xen_save_devices_state(const char *filename, bool has_live, bool live,
vm_stop(RUN_STATE_SAVE_VM);
global_state_store_running();
ioc = qio_channel_file_new_path(filename, O_WRONLY | O_CREAT, 0660, errp);
ioc = qio_channel_file_new_path(filename, O_WRONLY | O_CREAT | O_TRUNC,
0660, errp);
if (!ioc) {
goto the_end;
}