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[NETLINK]: Make use of NLA_STRING/NLA_NUL_STRING attribute validation

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Converts existing NLA_STRING attributes to use the new
validation features, saving a couple of temporary buffers.

Signed-off-by: Thomas Graf <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Thomas Graf 2006-08-26 20:13:18 -07:00 • committed by David S. Miller
commit 5176f91ea8
9 changed files with 17 additions and 26 deletions
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10
net/netlink/genetlink.c
View file

@ -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);
}