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| author | David S. Miller <davem@sunset.davemloft.net> | 2007-12-21 12:36:31 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-06-17 03:30:47 +0200 |
| commit | 67dd7608078b17f63f29ff2108fc5bf2407ddcec (patch) | |
| tree | 92dda0580609f2be16c45e9c8bdbaed0d1fb5a00 /net/wireless | |
| parent | wext: Extract private call iw_point handling into seperate functions. (diff) | |
| download | linux-67dd7608078b17f63f29ff2108fc5bf2407ddcec.tar.xz linux-67dd7608078b17f63f29ff2108fc5bf2407ddcec.zip | |
wext: Pull ioctl permission checking out into helper function.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | 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 a1cd19add6d8..e96559ea0fb3 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(); |