Merge branch 'master' of git://git.samba.org/samba into minschema

1 files changed, 54 insertions, 3 deletions

diff --git a/lib/talloc/talloc.c b/lib/talloc/talloc.c
index 1f7e52439f..60a48ad811 100644
--- a/lib/talloc/talloc.c
+++ b/lib/talloc/talloc.c
@@ -138,14 +138,30 @@ struct talloc_chunk {
 #define TC_HDR_SIZE ((sizeof(struct talloc_chunk)+15)&~15)
 #define TC_PTR_FROM_CHUNK(tc) ((void *)(TC_HDR_SIZE + (char*)tc))
 
+static void (*talloc_abort_fn)(const char *reason);
+
+void talloc_set_abort_fn(void (*abort_fn)(const char *reason))
+{
+	talloc_abort_fn = abort_fn;
+}
+
+static void talloc_abort(const char *reason)
+{
+	if (!talloc_abort_fn) {
+		TALLOC_ABORT(reason);
+	}
+
+	talloc_abort_fn(reason);
+}
+
 static void talloc_abort_double_free(void)
 {
-	TALLOC_ABORT("Bad talloc magic value - double free"); 
+	talloc_abort("Bad talloc magic value - double free");
 }
 
 static void talloc_abort_unknown_value(void)
 {
-	TALLOC_ABORT("Bad talloc magic value - unknown value"); 
+	talloc_abort("Bad talloc magic value - unknown value");
 }
 
 /* panic if we get a bad magic value */
@@ -564,7 +580,7 @@ static inline int _talloc_free(void *ptr)
 		pool_object_count = talloc_pool_objectcount(pool);
 
 		if (*pool_object_count == 0) {
-			TALLOC_ABORT("Pool object count zero!");
+			talloc_abort("Pool object count zero!");
 		}
 
 		*pool_object_count -= 1;
@@ -806,6 +822,41 @@ void *talloc_check_name(const void *ptr, const char *name)
 	return NULL;
 }
 
+static void talloc_abort_type_missmatch(const char *location,
+					const char *name,
+					const char *expected)
+{
+	const char *reason;
+
+	reason = talloc_asprintf(NULL,
+				 "%s: Type mismatch: name[%s] expected[%s]",
+				 location,
+				 name?name:"NULL",
+				 expected);
+	if (!reason) {
+		reason = "Type mismatch";
+	}
+
+	talloc_abort(reason);
+}
+
+void *_talloc_get_type_abort(const void *ptr, const char *name, const char *location)
+{
+	const char *pname;
+
+	if (unlikely(ptr == NULL)) {
+		talloc_abort_type_missmatch(location, NULL, name);
+		return NULL;
+	}
+
+	pname = talloc_get_name(ptr);
+	if (likely(pname == name || strcmp(pname, name) == 0)) {
+		return discard_const_p(void, ptr);
+	}
+
+	talloc_abort_type_missmatch(location, pname, name);
+	return NULL;
+}
 
 /*
   this is for compatibility with older versions of talloc