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net: Only NET_ADMIN is allowed to fully control TUN interfaces.

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Signed-off-by: Chia-chi Yeh <chiachi@android.com>
This commit is contained in:
Chia-chi Yeh
2011-07-15 15:32:57 -07:00
parent adce689ff7
commit cacfcdeb50
1 changed files with 6 additions and 0 deletions
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6
drivers/net/tun.c
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@@ -1238,6 +1238,12 @@ 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 || _IOC_TYPE(cmd) == 0x89)
if (copy_from_user(&ifr, argp, ifreq_len))
return -EFAULT;