[PATCH v3 08/25] tools/xenstore: make hashtable key and value parameters const

[Juergen Gross <jgross@xxxxxxxx>]

The key and value are never modified by hashtable code, so they should
be marked as const.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
V3:
- make value const, too.
---
 tools/xenstore/hashtable.c | 7 ++++---
 tools/xenstore/hashtable.h | 4 ++--
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/tools/xenstore/hashtable.c b/tools/xenstore/hashtable.c
index 11f6bf8f15..670dc01003 100644
--- a/tools/xenstore/hashtable.c
+++ b/tools/xenstore/hashtable.c
@@ -11,7 +11,8 @@
 
 struct entry
 {
-    void *k, *v;
+    const void *k;
+    void *v;
     unsigned int h;
     struct entry *next;
 };
@@ -140,7 +141,7 @@ static int hashtable_expand(struct hashtable *h)
     return 0;
 }
 
-int hashtable_add(struct hashtable *h, void *k, void *v)
+int hashtable_add(struct hashtable *h, const void *k, const void *v)
 {
     /* This method allows duplicate keys - but they shouldn't be used */
     unsigned int index;
@@ -164,7 +165,7 @@ int hashtable_add(struct hashtable *h, void *k, void *v)
     e->k = k;
     if (h->flags & HASHTABLE_FREE_KEY)
         talloc_steal(e, k);
-    e->v = v;
+    e->v = (void *)v;
     if (h->flags & HASHTABLE_FREE_VALUE)
         talloc_steal(e, v);
     e->next = h->table[index];
diff --git a/tools/xenstore/hashtable.h b/tools/xenstore/hashtable.h
index 5a2cc4a4be..1da3af2648 100644
--- a/tools/xenstore/hashtable.h
+++ b/tools/xenstore/hashtable.h
@@ -48,8 +48,8 @@ create_hashtable(const void *ctx, const char *name,
  * If in doubt, remove before insert.
  */
 
-int 
-hashtable_add(struct hashtable *h, void *k, void *v);
+int
+hashtable_add(struct hashtable *h, const void *k, const void *v);
 
 /*****************************************************************************
  * hashtable_search
-- 
2.35.3