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authorThomas Graf <tgraf@suug.ch>2006-08-27 05:13:18 +0200
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-23 00:18:25 +0200
commit5176f91ea83f1a59eba4dba88634a4729d51d1ac (patch)
tree80b35d2cd7ab316f0ee96ab742fee5073b949130 /net/netlink
parent[NETLINK]: Improve string attribute validation (diff)
downloadlinux-5176f91ea83f1a59eba4dba88634a4729d51d1ac.tar.xz
linux-5176f91ea83f1a59eba4dba88634a4729d51d1ac.zip
[NETLINK]: Make use of NLA_STRING/NLA_NUL_STRING attribute validation
Converts existing NLA_STRING attributes to use the new validation features, saving a couple of temporary buffers. Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink')
-rw-r--r--net/netlink/genetlink.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index d32599116c56..3ac942cdb677 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -455,7 +455,8 @@ static struct sk_buff *ctrl_build_msg(struct genl_family *family, u32 pid,
static struct nla_policy ctrl_policy[CTRL_ATTR_MAX+1] __read_mostly = {
[CTRL_ATTR_FAMILY_ID] = { .type = NLA_U16 },
- [CTRL_ATTR_FAMILY_NAME] = { .type = NLA_STRING },
+ [CTRL_ATTR_FAMILY_NAME] = { .type = NLA_NUL_STRING,
+ .len = GENL_NAMSIZ - 1 },
};
static int ctrl_getfamily(struct sk_buff *skb, struct genl_info *info)
@@ -470,12 +471,9 @@ static int ctrl_getfamily(struct sk_buff *skb, struct genl_info *info)
}
if (info->attrs[CTRL_ATTR_FAMILY_NAME]) {
- char name[GENL_NAMSIZ];
-
- if (nla_strlcpy(name, info->attrs[CTRL_ATTR_FAMILY_NAME],
- GENL_NAMSIZ) >= GENL_NAMSIZ)
- goto errout;
+ char *name;
+ name = nla_data(info->attrs[CTRL_ATTR_FAMILY_NAME]);
res = genl_family_find_byname(name);
}