8723BU: Update 8723BU wifi driver to version v4.3.16_14189.20150519_BTCOEX2015119...

[firefly-linux-kernel-4.4.55.git] / drivers / net / tun.c

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 582497103fe88ee4b659f646107437a66e784a2f..aeff706f16346a6327b9918c6f8d8f94032e630e 100644 (file)
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1898,6 +1898,12 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
        int vnet_hdr_sz;
        int ret;
 
+#ifdef CONFIG_ANDROID_PARANOID_NETWORK
+       if (cmd != TUNGETIFF && !capable(CAP_NET_ADMIN)) {
+               return -EPERM;
+       }
+#endif
+
        if (cmd == TUNSETIFF || cmd == TUNSETQUEUE || _IOC_TYPE(cmd) == 0x89) {
                if (copy_from_user(&ifr, argp, ifreq_len))
                        return -EFAULT;