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mac80211: validate SIOCSIWPOWER arguments better 

Don't accept any arguments we don't handle, and return error codes
instead of using an uninitialised stack value.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-01-06 18:12:35 +01:00 committed by John W. Linville
parent 4797938c5d
commit e9aeabaeb9
1 changed files with 4 additions and 1 deletions
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5
net/mac80211/wext.c
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@ -853,9 +853,12 @@ static int ieee80211_ioctl_siwpower(struct net_device *dev,
ps = true;
break;
default: /* Otherwise we ignore */
break;
return -EINVAL;
}
if (wrq->flags & ~(IW_POWER_MODE | IW_POWER_TIMEOUT))
return -EINVAL;
if (wrq->flags & IW_POWER_TIMEOUT)
timeout = wrq->value / 1000;