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Diffstat (limited to 'net/socket.c')
-rw-r--r--net/socket.c131
1 files changed, 6 insertions, 125 deletions
diff --git a/net/socket.c b/net/socket.c
index 0b2dad3bdf7f..c5b6f5c5cad9 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -1109,7 +1109,7 @@ static long sock_do_ioctl(struct net *net, struct socket *sock,
rtnl_unlock();
if (!err && copy_to_user(argp, &ifc, sizeof(struct ifconf)))
err = -EFAULT;
- } else {
+ } else if (is_socket_ioctl_cmd(cmd)) {
struct ifreq ifr;
bool need_copyout;
if (copy_from_user(&ifr, argp, sizeof(struct ifreq)))
@@ -1118,6 +1118,8 @@ static long sock_do_ioctl(struct net *net, struct socket *sock,
if (!err && need_copyout)
if (copy_to_user(argp, &ifr, sizeof(struct ifreq)))
return -EFAULT;
+ } else {
+ err = -ENOTTY;
}
return err;
}
@@ -3152,128 +3154,6 @@ static int compat_dev_ifconf(struct net *net, struct compat_ifconf __user *uifc3
return 0;
}
-static int ethtool_ioctl(struct net *net, struct compat_ifreq __user *ifr32)
-{
- struct compat_ethtool_rxnfc __user *compat_rxnfc;
- bool convert_in = false, convert_out = false;
- size_t buf_size = 0;
- struct ethtool_rxnfc __user *rxnfc = NULL;
- struct ifreq ifr;
- u32 rule_cnt = 0, actual_rule_cnt;
- u32 ethcmd;
- u32 data;
- int ret;
-
- if (get_user(data, &ifr32->ifr_ifru.ifru_data))
- return -EFAULT;
-
- compat_rxnfc = compat_ptr(data);
-
- if (get_user(ethcmd, &compat_rxnfc->cmd))
- return -EFAULT;
-
- /* Most ethtool structures are defined without padding.
- * Unfortunately struct ethtool_rxnfc is an exception.
- */
- switch (ethcmd) {
- default:
- break;
- case ETHTOOL_GRXCLSRLALL:
- /* Buffer size is variable */
- if (get_user(rule_cnt, &compat_rxnfc->rule_cnt))
- return -EFAULT;
- if (rule_cnt > KMALLOC_MAX_SIZE / sizeof(u32))
- return -ENOMEM;
- buf_size += rule_cnt * sizeof(u32);
- fallthrough;
- case ETHTOOL_GRXRINGS:
- case ETHTOOL_GRXCLSRLCNT:
- case ETHTOOL_GRXCLSRULE:
- case ETHTOOL_SRXCLSRLINS:
- convert_out = true;
- fallthrough;
- case ETHTOOL_SRXCLSRLDEL:
- buf_size += sizeof(struct ethtool_rxnfc);
- convert_in = true;
- rxnfc = compat_alloc_user_space(buf_size);
- break;
- }
-
- if (copy_from_user(&ifr.ifr_name, &ifr32->ifr_name, IFNAMSIZ))
- return -EFAULT;
-
- ifr.ifr_data = convert_in ? rxnfc : (void __user *)compat_rxnfc;
-
- if (convert_in) {
- /* We expect there to be holes between fs.m_ext and
- * fs.ring_cookie and at the end of fs, but nowhere else.
- */
- BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) +
- sizeof(compat_rxnfc->fs.m_ext) !=
- offsetof(struct ethtool_rxnfc, fs.m_ext) +
- sizeof(rxnfc->fs.m_ext));
- BUILD_BUG_ON(
- offsetof(struct compat_ethtool_rxnfc, fs.location) -
- offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) !=
- offsetof(struct ethtool_rxnfc, fs.location) -
- offsetof(struct ethtool_rxnfc, fs.ring_cookie));
-
- if (copy_in_user(rxnfc, compat_rxnfc,
- (void __user *)(&rxnfc->fs.m_ext + 1) -
- (void __user *)rxnfc) ||
- copy_in_user(&rxnfc->fs.ring_cookie,
- &compat_rxnfc->fs.ring_cookie,
- (void __user *)(&rxnfc->fs.location + 1) -
- (void __user *)&rxnfc->fs.ring_cookie))
- return -EFAULT;
- if (ethcmd == ETHTOOL_GRXCLSRLALL) {
- if (put_user(rule_cnt, &rxnfc->rule_cnt))
- return -EFAULT;
- } else if (copy_in_user(&rxnfc->rule_cnt,
- &compat_rxnfc->rule_cnt,
- sizeof(rxnfc->rule_cnt)))
- return -EFAULT;
- }
-
- ret = dev_ioctl(net, SIOCETHTOOL, &ifr, NULL);
- if (ret)
- return ret;
-
- if (convert_out) {
- if (copy_in_user(compat_rxnfc, rxnfc,
- (const void __user *)(&rxnfc->fs.m_ext + 1) -
- (const void __user *)rxnfc) ||
- copy_in_user(&compat_rxnfc->fs.ring_cookie,
- &rxnfc->fs.ring_cookie,
- (const void __user *)(&rxnfc->fs.location + 1) -
- (const void __user *)&rxnfc->fs.ring_cookie) ||
- copy_in_user(&compat_rxnfc->rule_cnt, &rxnfc->rule_cnt,
- sizeof(rxnfc->rule_cnt)))
- return -EFAULT;
-
- if (ethcmd == ETHTOOL_GRXCLSRLALL) {
- /* As an optimisation, we only copy the actual
- * number of rules that the underlying
- * function returned. Since Mallory might
- * change the rule count in user memory, we
- * check that it is less than the rule count
- * originally given (as the user buffer size),
- * which has been range-checked.
- */
- if (get_user(actual_rule_cnt, &rxnfc->rule_cnt))
- return -EFAULT;
- if (actual_rule_cnt < rule_cnt)
- rule_cnt = actual_rule_cnt;
- if (copy_in_user(&compat_rxnfc->rule_locs[0],
- &rxnfc->rule_locs[0],
- rule_cnt * sizeof(u32)))
- return -EFAULT;
- }
- }
-
- return 0;
-}
-
static int compat_siocwandev(struct net *net, struct compat_ifreq __user *uifr32)
{
compat_uptr_t uptr32;
@@ -3306,6 +3186,8 @@ static int compat_ifr_data_ioctl(struct net *net, unsigned int cmd,
struct ifreq ifreq;
u32 data32;
+ if (!is_socket_ioctl_cmd(cmd))
+ return -ENOTTY;
if (copy_from_user(ifreq.ifr_name, u_ifreq32->ifr_name, IFNAMSIZ))
return -EFAULT;
if (get_user(data32, &u_ifreq32->ifr_data))
@@ -3428,8 +3310,6 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock,
return old_bridge_ioctl(argp);
case SIOCGIFCONF:
return compat_dev_ifconf(net, argp);
- case SIOCETHTOOL:
- return ethtool_ioctl(net, argp);
case SIOCWANDEV:
return compat_siocwandev(net, argp);
case SIOCGIFMAP:
@@ -3442,6 +3322,7 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock,
return sock->ops->gettstamp(sock, argp, cmd == SIOCGSTAMP_OLD,
!COMPAT_USE_64BIT_TIME);
+ case SIOCETHTOOL:
case SIOCBONDSLAVEINFOQUERY:
case SIOCBONDINFOQUERY:
case SIOCSHWTSTAMP:
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-06-06 17:40:55 +0000