genetlink: optionally validate strictly/dumps

Add options to strictly validate messages and dump messages,
sometimes perhaps validating dump messages non-strictly may
be required, so add an option for that as well.

Since none of this can really be applied to existing commands,
set the options everwhere using the following spatch:

    @@
    identifier ops;
    expression X;
    @@
    struct genl_ops ops[] = {
    ...,
     {
            .cmd = X,
    +       .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
            ...
     },
    ...
    };

For new commands one should just not copy the .validate 'opt-out'
flags and thus get strict validation.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 18 insertions, 0 deletions

diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
index e7907308b331..a67720fad46c 100644
--- a/net/batman-adv/netlink.c
+++ b/net/batman-adv/netlink.c
@@ -1343,29 +1343,34 @@ static void batadv_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
 static const struct genl_ops batadv_netlink_ops[] = {
 	{
 		.cmd = BATADV_CMD_GET_MESH,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		/* can be retrieved by unprivileged users */
 		.doit = batadv_netlink_get_mesh,
 		.internal_flags = BATADV_FLAG_NEED_MESH,
 	},
 	{
 		.cmd = BATADV_CMD_TP_METER,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.doit = batadv_netlink_tp_meter_start,
 		.internal_flags = BATADV_FLAG_NEED_MESH,
 	},
 	{
 		.cmd = BATADV_CMD_TP_METER_CANCEL,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.doit = batadv_netlink_tp_meter_cancel,
 		.internal_flags = BATADV_FLAG_NEED_MESH,
 	},
 	{
 		.cmd = BATADV_CMD_GET_ROUTING_ALGOS,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_algo_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_HARDIF,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		/* can be retrieved by unprivileged users */
 		.dumpit = batadv_netlink_dump_hardif,
 		.doit = batadv_netlink_get_hardif,
@@ -1374,57 +1379,68 @@ static const struct genl_ops batadv_netlink_ops[] = {
 	},
 	{
 		.cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_tt_local_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_tt_global_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_ORIGINATORS,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_orig_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_NEIGHBORS,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_hardif_neigh_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_GATEWAYS,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_gw_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_BLA_CLAIM,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_bla_claim_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_BLA_BACKBONE,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_bla_backbone_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_DAT_CACHE,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_dat_cache_dump,
 	},
 	{
 		.cmd = BATADV_CMD_GET_MCAST_FLAGS,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.dumpit = batadv_mcast_flags_dump,
 	},
 	{
 		.cmd = BATADV_CMD_SET_MESH,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.doit = batadv_netlink_set_mesh,
 		.internal_flags = BATADV_FLAG_NEED_MESH,
 	},
 	{
 		.cmd = BATADV_CMD_SET_HARDIF,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.doit = batadv_netlink_set_hardif,
 		.internal_flags = BATADV_FLAG_NEED_MESH |
@@ -1432,6 +1448,7 @@ static const struct genl_ops batadv_netlink_ops[] = {
 	},
 	{
 		.cmd = BATADV_CMD_GET_VLAN,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		/* can be retrieved by unprivileged users */
 		.doit = batadv_netlink_get_vlan,
 		.internal_flags = BATADV_FLAG_NEED_MESH |
@@ -1439,6 +1456,7 @@ static const struct genl_ops batadv_netlink_ops[] = {
 	},
 	{
 		.cmd = BATADV_CMD_SET_VLAN,
+		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
 		.flags = GENL_ADMIN_PERM,
 		.doit = batadv_netlink_set_vlan,
 		.internal_flags = BATADV_FLAG_NEED_MESH |