unix_diag: Dumping all sockets core
Walk the unix sockets table and fill the core response structure, which includes type, state and inode. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -10,9 +10,83 @@
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#define UNIX_DIAG_PUT(skb, attrtype, attrlen) \
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#define UNIX_DIAG_PUT(skb, attrtype, attrlen) \
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RTA_DATA(__RTA_PUT(skb, attrtype, attrlen))
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RTA_DATA(__RTA_PUT(skb, attrtype, attrlen))
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static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_req *req,
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u32 pid, u32 seq, u32 flags, int sk_ino)
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{
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unsigned char *b = skb_tail_pointer(skb);
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struct nlmsghdr *nlh;
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struct unix_diag_msg *rep;
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nlh = NLMSG_PUT(skb, pid, seq, SOCK_DIAG_BY_FAMILY, sizeof(*rep));
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nlh->nlmsg_flags = flags;
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rep = NLMSG_DATA(nlh);
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rep->udiag_family = AF_UNIX;
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rep->udiag_type = sk->sk_type;
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rep->udiag_state = sk->sk_state;
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rep->udiag_ino = sk_ino;
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sock_diag_save_cookie(sk, rep->udiag_cookie);
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nlh->nlmsg_len = skb_tail_pointer(skb) - b;
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return skb->len;
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nlmsg_failure:
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nlmsg_trim(skb, b);
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return -EMSGSIZE;
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}
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static int sk_diag_dump(struct sock *sk, struct sk_buff *skb, struct unix_diag_req *req,
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u32 pid, u32 seq, u32 flags)
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{
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int sk_ino;
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unix_state_lock(sk);
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sk_ino = sock_i_ino(sk);
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unix_state_unlock(sk);
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if (!sk_ino)
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return 0;
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return sk_diag_fill(sk, skb, req, pid, seq, flags, sk_ino);
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}
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static int unix_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)
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static int unix_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)
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{
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{
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return 0;
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struct unix_diag_req *req;
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int num, s_num, slot, s_slot;
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req = NLMSG_DATA(cb->nlh);
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s_slot = cb->args[0];
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num = s_num = cb->args[1];
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spin_lock(&unix_table_lock);
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for (slot = s_slot; slot <= UNIX_HASH_SIZE; s_num = 0, slot++) {
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struct sock *sk;
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struct hlist_node *node;
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num = 0;
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sk_for_each(sk, node, &unix_socket_table[slot]) {
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if (num < s_num)
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goto next;
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if (!(req->udiag_states & (1 << sk->sk_state)))
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goto next;
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if (sk_diag_dump(sk, skb, req,
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NETLINK_CB(cb->skb).pid,
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cb->nlh->nlmsg_seq,
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NLM_F_MULTI) < 0)
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goto done;
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next:
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num++;
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}
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}
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done:
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spin_unlock(&unix_table_lock);
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cb->args[0] = slot;
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cb->args[1] = num;
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return skb->len;
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}
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}
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static int unix_diag_get_exact(struct sk_buff *in_skb,
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static int unix_diag_get_exact(struct sk_buff *in_skb,
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