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nl802154: stricter input checking for boolean inputs

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So far we handled boolean input by forcing them with !! and assigning
them into a bool. This allowed userspace to send values > 1 which were
used as 1. We should be stricter here and return -EINVAL for all but
0 or 1.

Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Stefan Schmidt 2015-08-20 12:09:47 +02:00 committed by Marcel Holtmann
parent df945360ce
commit 4e1795de10
1 changed files with 12 additions and 4 deletions
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16
net/ieee802154/nl802154.c
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@ -1034,7 +1034,7 @@ static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
struct cfg802154_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
bool mode;
int mode;
if (netif_running(dev))
return -EBUSY;
@ -1042,7 +1042,11 @@ static int nl802154_set_lbt_mode(struct sk_buff *skb, struct genl_info *info)
if (!info->attrs[NL802154_ATTR_LBT_MODE])
return -EINVAL;
mode = !!nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
mode = nla_get_u8(info->attrs[NL802154_ATTR_LBT_MODE]);
if (mode != 0 && mode != 1)
return -EINVAL;
if (!wpan_phy_supported_bool(mode, rdev->wpan_phy.supported.lbt))
return -EINVAL;
@ -1055,7 +1059,7 @@ nl802154_set_ackreq_default(struct sk_buff *skb, struct genl_info *info)
struct cfg802154_registered_device *rdev = info->user_ptr[0];
struct net_device *dev = info->user_ptr[1];
struct wpan_dev *wpan_dev = dev->ieee802154_ptr;
bool ackreq;
int ackreq;
if (netif_running(dev))
return -EBUSY;
@ -1063,7 +1067,11 @@ nl802154_set_ackreq_default(struct sk_buff *skb, struct genl_info *info)
if (!info->attrs[NL802154_ATTR_ACKREQ_DEFAULT])
return -EINVAL;
ackreq = !!nla_get_u8(info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]);
ackreq = nla_get_u8(info->attrs[NL802154_ATTR_ACKREQ_DEFAULT]);
if (ackreq != 0 && ackreq != 1)
return -EINVAL;
return rdev_set_ackreq_default(rdev, wpan_dev, ackreq);
}