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| author | Thomas Graf <tgraf@suug.ch> | 2006-08-27 05:13:18 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-23 00:18:25 +0200 |
| commit | 5176f91ea83f1a59eba4dba88634a4729d51d1ac (patch) | |
| tree | 80b35d2cd7ab316f0ee96ab742fee5073b949130 /net/netlink/genetlink.c | |
| parent | [NETLINK]: Improve string attribute validation (diff) | |
| download | linux-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/genetlink.c')
| -rw-r--r-- | net/netlink/genetlink.c | 10 |
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); } |