X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=lib%2Fnlattr.c;h=c4706eb98d3dfc922ec19fdbb0c23a36fab47a58;hb=42d53b4ff7d61487d18274ebdf1f70c1aef6f122;hp=56c3ce7fe29af8b2bf47dd8bdc41edb93576c70a;hpb=e9cc8bddaea3944fabfebb968bc88d603239beed;p=safe%2Fjmp%2Flinux-2.6

diff --git a/lib/nlattr.c b/lib/nlattr.c
index 56c3ce7..c4706eb 100644
--- a/lib/nlattr.c
+++ b/lib/nlattr.c
@@ -133,6 +133,32 @@ errout:
 }
 
 /**
+ * nla_policy_len - Determin the max. length of a policy
+ * @policy: policy to use
+ * @n: number of policies
+ *
+ * Determines the max. length of the policy.  It is currently used
+ * to allocated Netlink buffers roughly the size of the actual
+ * message.
+ *
+ * Returns 0 on success or a negative error code.
+ */
+int
+nla_policy_len(const struct nla_policy *p, int n)
+{
+	int i, len = 0;
+
+	for (i = 0; i < n; i++) {
+		if (p->len)
+			len += nla_total_size(p->len);
+		else if (nla_attr_minlen[p->type])
+			len += nla_total_size(nla_attr_minlen[p->type]);
+	}
+
+	return len;
+}
+
+/**
  * nla_parse - Parse a stream of attributes into a tb buffer
  * @tb: destination array with maxtype+1 elements
  * @maxtype: maximum attribute type to be expected
@@ -281,6 +307,7 @@ int nla_strcmp(const struct nlattr *nla, const char *str)
 	return d;
 }
 
+#ifdef CONFIG_NET
 /**
  * __nla_reserve - reserve room for attribute on the skb
  * @skb: socket buffer to reserve room on
@@ -305,6 +332,7 @@ struct nlattr *__nla_reserve(struct sk_buff *skb, int attrtype, int attrlen)
 
 	return nla;
 }
+EXPORT_SYMBOL(__nla_reserve);
 
 /**
  * __nla_reserve_nohdr - reserve room for attribute without header
@@ -325,6 +353,7 @@ void *__nla_reserve_nohdr(struct sk_buff *skb, int attrlen)
 
 	return start;
 }
+EXPORT_SYMBOL(__nla_reserve_nohdr);
 
 /**
  * nla_reserve - reserve room for attribute on the skb
@@ -345,6 +374,7 @@ struct nlattr *nla_reserve(struct sk_buff *skb, int attrtype, int attrlen)
 
 	return __nla_reserve(skb, attrtype, attrlen);
 }
+EXPORT_SYMBOL(nla_reserve);
 
 /**
  * nla_reserve_nohdr - reserve room for attribute without header
@@ -363,6 +393,7 @@ void *nla_reserve_nohdr(struct sk_buff *skb, int attrlen)
 
 	return __nla_reserve_nohdr(skb, attrlen);
 }
+EXPORT_SYMBOL(nla_reserve_nohdr);
 
 /**
  * __nla_put - Add a netlink attribute to a socket buffer
@@ -382,6 +413,7 @@ void __nla_put(struct sk_buff *skb, int attrtype, int attrlen,
 	nla = __nla_reserve(skb, attrtype, attrlen);
 	memcpy(nla_data(nla), data, attrlen);
 }
+EXPORT_SYMBOL(__nla_put);
 
 /**
  * __nla_put_nohdr - Add a netlink attribute without header
@@ -399,6 +431,7 @@ void __nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data)
 	start = __nla_reserve_nohdr(skb, attrlen);
 	memcpy(start, data, attrlen);
 }
+EXPORT_SYMBOL(__nla_put_nohdr);
 
 /**
  * nla_put - Add a netlink attribute to a socket buffer
@@ -418,6 +451,7 @@ int nla_put(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
 	__nla_put(skb, attrtype, attrlen, data);
 	return 0;
 }
+EXPORT_SYMBOL(nla_put);
 
 /**
  * nla_put_nohdr - Add a netlink attribute without header
@@ -436,6 +470,7 @@ int nla_put_nohdr(struct sk_buff *skb, int attrlen, const void *data)
 	__nla_put_nohdr(skb, attrlen, data);
 	return 0;
 }
+EXPORT_SYMBOL(nla_put_nohdr);
 
 /**
  * nla_append - Add a netlink attribute without header or padding
@@ -454,20 +489,14 @@ int nla_append(struct sk_buff *skb, int attrlen, const void *data)
 	memcpy(skb_put(skb, attrlen), data, attrlen);
 	return 0;
 }
+EXPORT_SYMBOL(nla_append);
+#endif
 
 EXPORT_SYMBOL(nla_validate);
+EXPORT_SYMBOL(nla_policy_len);
 EXPORT_SYMBOL(nla_parse);
 EXPORT_SYMBOL(nla_find);
 EXPORT_SYMBOL(nla_strlcpy);
-EXPORT_SYMBOL(__nla_reserve);
-EXPORT_SYMBOL(__nla_reserve_nohdr);
-EXPORT_SYMBOL(nla_reserve);
-EXPORT_SYMBOL(nla_reserve_nohdr);
-EXPORT_SYMBOL(__nla_put);
-EXPORT_SYMBOL(__nla_put_nohdr);
-EXPORT_SYMBOL(nla_put);
-EXPORT_SYMBOL(nla_put_nohdr);
 EXPORT_SYMBOL(nla_memcpy);
 EXPORT_SYMBOL(nla_memcmp);
 EXPORT_SYMBOL(nla_strcmp);
-EXPORT_SYMBOL(nla_append);