[Xen-devel] [PATCH 08 of 24] xenpaging: compare both token and path when checking for @releaseDomain event

[Olaf Hering <olaf@xxxxxxxxx>]

# HG changeset patch
# User Olaf Hering <olaf@xxxxxxxxx>
# Date 1317653604 -7200
# Node ID 87cc0a717a5edc87411295ad0d5cf0b3366da0d3
# Parent  02453d6279baad46b1388267639892feaf6d56af
xenpaging: compare both token and path when checking for @releaseDomain event

Subsequent patches will use xenstored to store the numbers of pages
xenpaging is suppose to page-out. A domain_id value could be
misinterpreted as number of pages. Compare both path and token to
recognize the @releaseDomain event.

Also add debug output to show received watch event.

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>

diff -r 02453d6279ba -r 87cc0a717a5e tools/xenpaging/xenpaging.c
--- a/tools/xenpaging/xenpaging.c
+++ b/tools/xenpaging/xenpaging.c
@@ -101,7 +101,8 @@ static int xenpaging_wait_for_event_or_t
         vec = xs_read_watch(paging->xs_handle, &num);
         if ( vec )
         {
-            if ( strcmp(vec[XS_WATCH_TOKEN], watch_token) == 0 )
+            DPRINTF("path '%s' token '%s'\n", vec[XS_WATCH_PATH], 
vec[XS_WATCH_TOKEN]);
+            if ( strcmp(vec[XS_WATCH_PATH], "@releaseDomain") == 0 && 
strcmp(vec[XS_WATCH_TOKEN], watch_token) == 0 )
             {
                 /* If our guest disappeared, set interrupt flag and fall 
through */
                 if ( xs_is_domain_introduced(paging->xs_handle, 
paging->mem_event.domain_id) == false )

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