tools: Change the name of the qemu save file at restore time

Change the name of the qemu save file to qemu-resume at restore time so
that it doesn't collide with the name of the next save file.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/tools/libxc/xenguest.h b/tools/libxc/xenguest.h
index dd0c4cf6e8..9ed0ea41fe 100644
--- a/tools/libxc/xenguest.h
+++ b/tools/libxc/xenguest.h
@@ -77,6 +77,14 @@ int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t dom,
                       unsigned int store_evtchn, unsigned long *store_mfn,
                       unsigned int console_evtchn, unsigned long *console_mfn,
                       unsigned int hvm, unsigned int pae, int superpages);
+/**
+ * xc_domain_restore writes a file to disk that contains the device
+ * model saved state.
+ * The pathname of this file is XC_DEVICE_MODEL_RESTORE_FILE; The domid
+ * of the new domain is automatically appended to the filename,
+ * separated by a ".".
+ */
+#define XC_DEVICE_MODEL_RESTORE_FILE "/var/lib/xen/qemu-resume"
 
 /**
  * This function will create a domain for a paravirtualized Linux