1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/IntrusiveList.h>
#include <Kernel/DoubleBuffer.h>
#include <Kernel/Net/Socket.h>
namespace Kernel {
class OpenFileDescription;
struct SocketPair {
NonnullRefPtr<OpenFileDescription> description0;
NonnullRefPtr<OpenFileDescription> description1;
};
class LocalSocket final : public Socket {
public:
static KResultOr<NonnullRefPtr<LocalSocket>> try_create(int type);
static KResultOr<SocketPair> try_create_connected_pair(int type);
virtual ~LocalSocket() override;
KResult sendfd(OpenFileDescription const& socket_description, NonnullRefPtr<OpenFileDescription> passing_description);
KResultOr<NonnullRefPtr<OpenFileDescription>> recvfd(const OpenFileDescription& socket_description);
static void for_each(Function<void(const LocalSocket&)>);
StringView socket_path() const;
KResultOr<NonnullOwnPtr<KString>> pseudo_path(const OpenFileDescription& description) const override;
// ^Socket
virtual KResult bind(Userspace<const sockaddr*>, socklen_t) override;
virtual KResult connect(OpenFileDescription&, Userspace<const sockaddr*>, socklen_t, ShouldBlock = ShouldBlock::Yes) override;
virtual KResult listen(size_t) override;
virtual void get_local_address(sockaddr*, socklen_t*) override;
virtual void get_peer_address(sockaddr*, socklen_t*) override;
virtual KResult attach(OpenFileDescription&) override;
virtual void detach(OpenFileDescription&) override;
virtual bool can_read(const OpenFileDescription&, size_t) const override;
virtual bool can_write(const OpenFileDescription&, size_t) const override;
virtual KResultOr<size_t> sendto(OpenFileDescription&, const UserOrKernelBuffer&, size_t, int, Userspace<const sockaddr*>, socklen_t) override;
virtual KResultOr<size_t> recvfrom(OpenFileDescription&, UserOrKernelBuffer&, size_t, int flags, Userspace<sockaddr*>, Userspace<socklen_t*>, Time&) override;
virtual KResult getsockopt(OpenFileDescription&, int level, int option, Userspace<void*>, Userspace<socklen_t*>) override;
virtual KResult ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
virtual KResult chown(OpenFileDescription&, UserID, GroupID) override;
virtual KResult chmod(OpenFileDescription&, mode_t) override;
private:
explicit LocalSocket(int type, NonnullOwnPtr<DoubleBuffer> client_buffer, NonnullOwnPtr<DoubleBuffer> server_buffer);
virtual StringView class_name() const override { return "LocalSocket"sv; }
virtual bool is_local() const override { return true; }
bool has_attached_peer(const OpenFileDescription&) const;
DoubleBuffer* receive_buffer_for(OpenFileDescription&);
DoubleBuffer* send_buffer_for(OpenFileDescription&);
NonnullRefPtrVector<OpenFileDescription>& sendfd_queue_for(const OpenFileDescription&);
NonnullRefPtrVector<OpenFileDescription>& recvfd_queue_for(const OpenFileDescription&);
void set_connect_side_role(Role connect_side_role, bool force_evaluate_block_conditions = false)
{
auto previous = m_connect_side_role;
m_connect_side_role = connect_side_role;
if (previous != m_connect_side_role || force_evaluate_block_conditions)
evaluate_block_conditions();
}
KResult try_set_path(StringView);
// The inode this socket is bound to.
WeakPtr<Inode> m_inode;
UserID m_prebind_uid { 0 };
GroupID m_prebind_gid { 0 };
mode_t m_prebind_mode { 0 };
// A single LocalSocket is shared between two file descriptions
// on the connect side and the accept side; so we need to store
// an additional role for the connect side and differentiate
// between them.
Role m_connect_side_role { Role::None };
OpenFileDescription* m_connect_side_fd { nullptr };
virtual Role role(const OpenFileDescription& description) const override
{
if (m_connect_side_fd == &description)
return m_connect_side_role;
return m_role;
}
bool m_bound { false };
bool m_accept_side_fd_open { false };
OwnPtr<KString> m_path;
NonnullOwnPtr<DoubleBuffer> m_for_client;
NonnullOwnPtr<DoubleBuffer> m_for_server;
NonnullRefPtrVector<OpenFileDescription> m_fds_for_client;
NonnullRefPtrVector<OpenFileDescription> m_fds_for_server;
IntrusiveListNode<LocalSocket> m_list_node;
public:
using List = IntrusiveList<&LocalSocket::m_list_node>;
};
}
|
