RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-24 21:07:34 +00:00
Code Issues Activity Actions

Kernel: Implement the SO_DONTROUTE SOL_SOCKET-level option

Browse source
This commit is contained in:
Idan Horowitz 2021-12-02 01:01:02 +02:00 • committed by Andreas Kling
parent 641498954f
commit 613ade9dec
4 changed files with 20 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Kernel/API/POSIX/sys/socket.h
View file

@ -109,6 +109,7 @@ enum {
SO_BROADCAST,
SO_LINGER,
SO_ACCEPTCONN,
SO_DONTROUTE,
};
#define SO_RCVTIMEO SO_RCVTIMEO
#define SO_SNDTIMEO SO_SNDTIMEO
@ -125,6 +126,7 @@ enum {
#define SO_RCVBUF SO_RCVBUF
#define SO_LINGER SO_LINGER
#define SO_ACCEPTCONN SO_ACCEPTCONN
#define SO_DONTROUTE SO_DONTROUTE
enum {
SCM_TIMESTAMP,

2
Kernel/Net/IPv4Socket.cpp
View file

@ -210,7 +210,7 @@ ErrorOr<size_t> IPv4Socket::sendto(OpenFileDescription&, const UserOrKernelBuffe
if (!is_connected() && m_peer_address.is_zero())
return set_so_error(EPIPE);
auto allow_using_gateway = (flags & MSG_DONTROUTE) ? AllowUsingGateway::No : AllowUsingGateway::Yes;
auto allow_using_gateway = ((flags & MSG_DONTROUTE) || m_routing_disabled) ? AllowUsingGateway::No : AllowUsingGateway::Yes;
auto routing_decision = route_to(m_peer_address, m_local_address, bound_interface(), allow_using_gateway);
if (routing_decision.is_zero())
return set_so_error(EHOSTUNREACH);

16
Kernel/Net/Socket.cpp
View file

@ -123,6 +123,14 @@ ErrorOr<void> Socket::setsockopt(int level, int option, Userspace<const void*> u
return ENOTSUP;
}
return {};
case SO_DONTROUTE: {
int routing_disabled;
if (user_value_size != sizeof(routing_disabled))
return EINVAL;
TRY(copy_from_user(&routing_disabled, static_ptr_cast<const int*>(user_value)));
m_routing_disabled = routing_disabled != 0;
return {};
}
default:
dbgln("setsockopt({}) at SOL_SOCKET not implemented.", option);
return ENOPROTOOPT;
@ -216,6 +224,14 @@ ErrorOr<void> Socket::getsockopt(OpenFileDescription&, int level, int option, Us
size = sizeof(accepting_connections);
return copy_to_user(value_size, &size);
}
case SO_DONTROUTE: {
int routing_disabled = m_routing_disabled ? 1 : 0;
if (size < sizeof(routing_disabled))
return EINVAL;
TRY(copy_to_user(static_ptr_cast<int*>(value), &routing_disabled));
size = sizeof(routing_disabled);
return copy_to_user(value_size, &size);
}
default:
dbgln("setsockopt({}) at SOL_SOCKET not implemented.", option);
return ENOPROTOOPT;

2
Kernel/Net/Socket.h
View file

@ -154,9 +154,9 @@ protected:
void set_role(Role role) { m_role = role; }
protected:
ucred m_origin { 0, 0, 0 };
ucred m_acceptor { 0, 0, 0 };
bool m_routing_disabled { false };
private:
virtual bool is_socket() const final { return true; }