From ef6243acb4782df587a4d7d6c310fa5b5d82684b Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 26 Apr 2019 14:07:31 +0200 Subject: 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 Signed-off-by: David S. Miller --- net/ipv4/fou.c | 3 +++ net/ipv4/tcp_metrics.c | 2 ++ 2 files changed, 5 insertions(+) (limited to 'net/ipv4') diff --git a/net/ipv4/fou.c b/net/ipv4/fou.c index 1ca1586a7e46..ca95051317ed 100644 --- a/net/ipv4/fou.c +++ b/net/ipv4/fou.c @@ -913,16 +913,19 @@ static int fou_nl_dump(struct sk_buff *skb, struct netlink_callback *cb) static const struct genl_ops fou_nl_ops[] = { { .cmd = FOU_CMD_ADD, + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = fou_nl_cmd_add_port, .flags = GENL_ADMIN_PERM, }, { .cmd = FOU_CMD_DEL, + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = fou_nl_cmd_rm_port, .flags = GENL_ADMIN_PERM, }, { .cmd = FOU_CMD_GET, + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = fou_nl_cmd_get_port, .dumpit = fou_nl_dump, }, diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c index 9a08bfb0672c..f262f2cace29 100644 --- a/net/ipv4/tcp_metrics.c +++ b/net/ipv4/tcp_metrics.c @@ -951,11 +951,13 @@ static int tcp_metrics_nl_cmd_del(struct sk_buff *skb, struct genl_info *info) static const struct genl_ops tcp_metrics_nl_ops[] = { { .cmd = TCP_METRICS_CMD_GET, + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = tcp_metrics_nl_cmd_get, .dumpit = tcp_metrics_nl_dump, }, { .cmd = TCP_METRICS_CMD_DEL, + .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = tcp_metrics_nl_cmd_del, .flags = GENL_ADMIN_PERM, }, -- cgit v1.2.3-59-g8ed1b