提交 784b4e61 编写于 作者: P Phil Sutter 提交者: Pablo Neira Ayuso

netfilter: nf_tables: Attach process info to NFT_MSG_NEWGEN notifications

This is helpful for 'nft monitor' to track which process caused a given
change to the ruleset.
Signed-off-by: NPhil Sutter <phil@nwl.cc>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
上级 0b35f603
......@@ -1221,6 +1221,8 @@ enum nft_objref_attributes {
enum nft_gen_attributes {
NFTA_GEN_UNSPEC,
NFTA_GEN_ID,
NFTA_GEN_PROC_PID,
NFTA_GEN_PROC_NAME,
__NFTA_GEN_MAX
};
#define NFTA_GEN_MAX (__NFTA_GEN_MAX - 1)
......
......@@ -4657,6 +4657,7 @@ static int nf_tables_fill_gen_info(struct sk_buff *skb, struct net *net,
{
struct nlmsghdr *nlh;
struct nfgenmsg *nfmsg;
char buf[TASK_COMM_LEN];
int event = nfnl_msg_type(NFNL_SUBSYS_NFTABLES, NFT_MSG_NEWGEN);
nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct nfgenmsg), 0);
......@@ -4668,7 +4669,9 @@ static int nf_tables_fill_gen_info(struct sk_buff *skb, struct net *net,
nfmsg->version = NFNETLINK_V0;
nfmsg->res_id = htons(net->nft.base_seq & 0xffff);
if (nla_put_be32(skb, NFTA_GEN_ID, htonl(net->nft.base_seq)))
if (nla_put_be32(skb, NFTA_GEN_ID, htonl(net->nft.base_seq)) ||
nla_put_be32(skb, NFTA_GEN_PROC_PID, htonl(task_pid_nr(current))) ||
nla_put_string(skb, NFTA_GEN_PROC_NAME, get_task_comm(buf, current)))
goto nla_put_failure;
nlmsg_end(skb, nlh);
......
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