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Kernel: Add support for route flags

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Previously the routing table did not store the route flags. This
adds basic support and exposes them in the /proc directory so that a
userspace caller can query the route and identify the type of each
route.
This commit is contained in:
brapru 2022-05-09 07:23:02 -04:00 • committed by Andreas Kling
parent 210c3f24cd
commit 7a4e41f8f8
5 changed files with 12 additions and 8 deletions
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6
Kernel/Net/IPv4Socket.cpp
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@ -629,14 +629,14 @@ ErrorOr<void> IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspac
return EPERM;
if (route.rt_gateway.sa_family != AF_INET)
return EAFNOSUPPORT;
if ((route.rt_flags & (RTF_UP | RTF_GATEWAY)) != (RTF_UP | RTF_GATEWAY))
if (!(route.rt_flags & RTF_UP))
return EINVAL; // FIXME: Find the correct value to return
auto destination = IPv4Address(((sockaddr_in&)route.rt_dst).sin_addr.s_addr);
auto gateway = IPv4Address(((sockaddr_in&)route.rt_gateway).sin_addr.s_addr);
auto genmask = IPv4Address(((sockaddr_in&)route.rt_genmask).sin_addr.s_addr);
return update_routing_table(destination, gateway, genmask, adapter, UpdateTable::Set);
return update_routing_table(destination, gateway, genmask, route.rt_flags, adapter, UpdateTable::Set);
}
case SIOCDELRT:
if (!Process::current().is_superuser())
@ -648,7 +648,7 @@ ErrorOr<void> IPv4Socket::ioctl(OpenFileDescription&, unsigned request, Userspac
auto gateway = IPv4Address(((sockaddr_in&)route.rt_gateway).sin_addr.s_addr);
auto genmask = IPv4Address(((sockaddr_in&)route.rt_genmask).sin_addr.s_addr);
return update_routing_table(destination, gateway, genmask, adapter, UpdateTable::Delete);
return update_routing_table(destination, gateway, genmask, route.rt_flags, adapter, UpdateTable::Delete);
}
return EINVAL;