Messages in this thread Patch in this message | | | Date | Tue, 03 Jun 2008 13:28:26 -0700 (PDT) | Subject | [PATCH 5/12]: wext: Pull ioctl permission checking out into helper function. | From | David Miller <> |
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Signed-off-by: David S. Miller <davem@davemloft.net> --- net/wireless/wext.c | 22 +++++++++++++++------- 1 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/net/wireless/wext.c b/net/wireless/wext.c index a1cd19a..e96559e 100644 --- a/net/wireless/wext.c +++ b/net/wireless/wext.c @@ -1061,18 +1061,26 @@ static int wireless_process_ioctl(struct net *net, struct ifreq *ifr, unsigned i return -EOPNOTSUPP; } +/* If command is `set a parameter', or `get the encoding parameters', + * check if the user has the right to do it. + */ +static int wext_permission_check(unsigned int cmd) +{ + if ((IW_IS_SET(cmd) || cmd == SIOCGIWENCODE || cmd == SIOCGIWENCODEEXT) + && !capable(CAP_NET_ADMIN)) + return -EPERM; + + return 0; +} + /* entry point from dev ioctl */ int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd, void __user *arg) { - int ret; + int ret = wext_permission_check(cmd); - /* If command is `set a parameter', or - * `get the encoding parameters', check if - * the user has the right to do it */ - if ((IW_IS_SET(cmd) || cmd == SIOCGIWENCODE || cmd == SIOCGIWENCODEEXT) - && !capable(CAP_NET_ADMIN)) - return -EPERM; + if (ret) + return ret; dev_load(net, ifr->ifr_name); rtnl_lock(); -- 1.5.5.1.308.g1fbb5
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