^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/netlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/sock_diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/netlink_diag.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/rhashtable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "af_netlink.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) static int sk_diag_dump_groups(struct sock *sk, struct sk_buff *nlskb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) struct netlink_sock *nlk = nlk_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) if (nlk->groups == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) return nla_put(nlskb, NETLINK_DIAG_GROUPS, NLGRPSZ(nlk->ngroups),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) nlk->groups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static int sk_diag_put_flags(struct sock *sk, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct netlink_sock *nlk = nlk_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) u32 flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) if (nlk->cb_running)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) flags |= NDIAG_FLAG_CB_RUNNING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) if (nlk->flags & NETLINK_F_RECV_PKTINFO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) flags |= NDIAG_FLAG_PKTINFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) if (nlk->flags & NETLINK_F_BROADCAST_SEND_ERROR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) flags |= NDIAG_FLAG_BROADCAST_ERROR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) if (nlk->flags & NETLINK_F_RECV_NO_ENOBUFS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) flags |= NDIAG_FLAG_NO_ENOBUFS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) if (nlk->flags & NETLINK_F_LISTEN_ALL_NSID)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) flags |= NDIAG_FLAG_LISTEN_ALL_NSID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (nlk->flags & NETLINK_F_CAP_ACK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) flags |= NDIAG_FLAG_CAP_ACK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return nla_put_u32(skb, NETLINK_DIAG_FLAGS, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static int sk_diag_fill(struct sock *sk, struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct netlink_diag_req *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u32 portid, u32 seq, u32 flags, int sk_ino)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct nlmsghdr *nlh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct netlink_diag_msg *rep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct netlink_sock *nlk = nlk_sk(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) nlh = nlmsg_put(skb, portid, seq, SOCK_DIAG_BY_FAMILY, sizeof(*rep),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (!nlh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) rep = nlmsg_data(nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) rep->ndiag_family = AF_NETLINK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) rep->ndiag_type = sk->sk_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) rep->ndiag_protocol = sk->sk_protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) rep->ndiag_state = sk->sk_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) rep->ndiag_ino = sk_ino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) rep->ndiag_portid = nlk->portid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) rep->ndiag_dst_portid = nlk->dst_portid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) rep->ndiag_dst_group = nlk->dst_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) sock_diag_save_cookie(sk, rep->ndiag_cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if ((req->ndiag_show & NDIAG_SHOW_GROUPS) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) sk_diag_dump_groups(sk, skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) goto out_nlmsg_trim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) if ((req->ndiag_show & NDIAG_SHOW_MEMINFO) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) sock_diag_put_meminfo(sk, skb, NETLINK_DIAG_MEMINFO))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) goto out_nlmsg_trim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if ((req->ndiag_show & NDIAG_SHOW_FLAGS) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) sk_diag_put_flags(sk, skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) goto out_nlmsg_trim;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) nlmsg_end(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) out_nlmsg_trim:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) nlmsg_cancel(skb, nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return -EMSGSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static int __netlink_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int protocol, int s_num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct rhashtable_iter *hti = (void *)cb->args[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct netlink_table *tbl = &nl_table[protocol];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct netlink_diag_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct netlink_sock *nlsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int num = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) req = nlmsg_data(cb->nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (s_num > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) goto mc_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) num--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (!hti) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) hti = kmalloc(sizeof(*hti), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (!hti)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) cb->args[2] = (long)hti;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (!s_num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) rhashtable_walk_enter(&tbl->hash, hti);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) rhashtable_walk_start(hti);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) while ((nlsk = rhashtable_walk_next(hti))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (IS_ERR(nlsk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) ret = PTR_ERR(nlsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) if (ret == -EAGAIN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) sk = (struct sock *)nlsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (!net_eq(sock_net(sk), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) if (sk_diag_fill(sk, skb, req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) cb->nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) NLM_F_MULTI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) sock_i_ino(sk)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) rhashtable_walk_stop(hti);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) rhashtable_walk_exit(hti);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) num++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) mc_list:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) read_lock(&nl_table_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) sk_for_each_bound(sk, &tbl->mc_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (sk_hashed(sk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (!net_eq(sock_net(sk), net))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (num < s_num) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) num++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (sk_diag_fill(sk, skb, req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) NETLINK_CB(cb->skb).portid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) cb->nlh->nlmsg_seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) NLM_F_MULTI,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) sock_i_ino(sk)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) num++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) read_unlock(&nl_table_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) cb->args[0] = num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static int netlink_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct netlink_diag_req *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) int s_num = cb->args[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) req = nlmsg_data(cb->nlh);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (req->sdiag_protocol == NDIAG_PROTO_ALL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) for (i = cb->args[1]; i < MAX_LINKS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) err = __netlink_diag_dump(skb, cb, i, s_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) s_num = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) cb->args[1] = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (req->sdiag_protocol >= MAX_LINKS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) err = __netlink_diag_dump(skb, cb, req->sdiag_protocol, s_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return err < 0 ? err : skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static int netlink_diag_dump_done(struct netlink_callback *cb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct rhashtable_iter *hti = (void *)cb->args[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if (cb->args[0] == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) rhashtable_walk_exit(hti);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) kfree(hti);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static int netlink_diag_handler_dump(struct sk_buff *skb, struct nlmsghdr *h)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) int hdrlen = sizeof(struct netlink_diag_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct net *net = sock_net(skb->sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (nlmsg_len(h) < hdrlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (h->nlmsg_flags & NLM_F_DUMP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct netlink_dump_control c = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) .dump = netlink_diag_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) .done = netlink_diag_dump_done,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) return netlink_dump_start(net->diag_nlsk, skb, h, &c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static const struct sock_diag_handler netlink_diag_handler = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) .family = AF_NETLINK,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) .dump = netlink_diag_handler_dump,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) static int __init netlink_diag_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) return sock_diag_register(&netlink_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static void __exit netlink_diag_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) sock_diag_unregister(&netlink_diag_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) module_init(netlink_diag_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) module_exit(netlink_diag_exit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 16 /* AF_NETLINK */);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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