xenstore.h: Put ( ) around XS_* define shifts

These definitions were not properly protected from unwanted operator
precedence interactions.

Existing use sites in-tree all use & or |, so this does not change any
actual behaviour in-tree.

The same seems likely to be true in external callers.

Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>

diff --git a/tools/xenstore/include/xenstore.h b/tools/xenstore/include/xenstore.h
index f460b8c5e5363a8d45d4edee141c63c8b802f38c..064b62c455f66edc501a7ab75aad38a8a330100b 100644 (file)
--- a/tools/xenstore/include/xenstore.h
+++ b/tools/xenstore/include/xenstore.h
@@ -23,8 +23,8 @@
 
 #define XBT_NULL 0
 
-#define XS_OPEN_READONLY       1UL<<0
-#define XS_OPEN_SOCKETONLY      1UL<<1
+#define XS_OPEN_READONLY       (1UL<<0)
+#define XS_OPEN_SOCKETONLY      (1UL<<1)
 
 /*
  * Setting XS_UNWATCH_FILTER arranges that after xs_unwatch, no
@@ -45,7 +45,7 @@
  *                                  xs_unwatch for the first watch
  *                                  has returned.
  */
-#define XS_UNWATCH_FILTER     1UL<<2
+#define XS_UNWATCH_FILTER     (1UL<<2)
 
 struct xs_handle;
 typedef uint32_t xs_transaction_t;