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Kernel: Make Socket::bind() take credentials as input

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This commit is contained in:
Andreas Kling 2022-08-21 16:33:09 +02:00
parent 8d0bd3f225
commit 51318d51a4
Notes: sideshowbarker 2024-07-17 08:05:42 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/51318d51a4
6 changed files with 9 additions and 9 deletions
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6
Kernel/Net/IPv4Socket.cpp
View File

@ -94,7 +94,7 @@ void IPv4Socket::get_peer_address(sockaddr* address, socklen_t* address_size)
*address_size = sizeof(sockaddr_in);
}
ErrorOr<void> IPv4Socket::bind(Userspace<sockaddr const*> user_address, socklen_t address_size)
ErrorOr<void> IPv4Socket::bind(Credentials const& credentials, Userspace<sockaddr const*> user_address, socklen_t address_size)
{
VERIFY(setup_state() == SetupState::Unstarted);
if (address_size != sizeof(sockaddr_in))
@ -107,9 +107,9 @@ ErrorOr<void> IPv4Socket::bind(Userspace<sockaddr const*> user_address, socklen_
return set_so_error(EINVAL);
auto requested_local_port = ntohs(address.sin_port);
if (!Process::current().is_superuser()) {
if (!credentials.is_superuser()) {
if (requested_local_port > 0 && requested_local_port < 1024) {
dbgln("UID {} attempted to bind {} to port {}", Process::current().uid(), class_name(), requested_local_port);
dbgln("UID {} attempted to bind {} to port {}", credentials.uid(), class_name(), requested_local_port);
return set_so_error(EACCES);
}
}

2
Kernel/Net/IPv4Socket.h
View File

@ -32,7 +32,7 @@ public:
virtual ~IPv4Socket() override;
virtual ErrorOr<void> close() override;
virtual ErrorOr<void> bind(Userspace<sockaddr const*>, socklen_t) override;
virtual ErrorOr<void> bind(Credentials const&, Userspace<sockaddr const*>, socklen_t) override;
virtual ErrorOr<void> connect(OpenFileDescription&, Userspace<sockaddr const*>, socklen_t) override;
virtual ErrorOr<void> listen(size_t) override;
virtual void get_local_address(sockaddr*, socklen_t*) override;

4
Kernel/Net/LocalSocket.cpp
View File

@ -122,7 +122,7 @@ void LocalSocket::get_peer_address(sockaddr* address, socklen_t* address_size)
get_local_address(address, address_size);
}
ErrorOr<void> LocalSocket::bind(Userspace<sockaddr const*> user_address, socklen_t address_size)
ErrorOr<void> LocalSocket::bind(Credentials const& credentials, Userspace<sockaddr const*> user_address, socklen_t address_size)
{
VERIFY(setup_state() == SetupState::Unstarted);
if (address_size > sizeof(sockaddr_un))
@ -139,7 +139,7 @@ ErrorOr<void> LocalSocket::bind(Userspace<sockaddr const*> user_address, socklen
mode_t mode = S_IFSOCK | (m_prebind_mode & 0777);
UidAndGid owner { m_prebind_uid, m_prebind_gid };
auto result = VirtualFileSystem::the().open(Process::current().credentials(), path->view(), O_CREAT | O_EXCL | O_NOFOLLOW_NOERROR, mode, Process::current().current_directory(), owner);
auto result = VirtualFileSystem::the().open(credentials, path->view(), O_CREAT | O_EXCL | O_NOFOLLOW_NOERROR, mode, Process::current().current_directory(), owner);
if (result.is_error()) {
if (result.error().code() == EEXIST)
return set_so_error(EADDRINUSE);

2
Kernel/Net/LocalSocket.h
View File

@ -36,7 +36,7 @@ public:
ErrorOr<NonnullOwnPtr<KString>> pseudo_path(OpenFileDescription const& description) const override;
// ^Socket
virtual ErrorOr<void> bind(Userspace<sockaddr const*>, socklen_t) override;
virtual ErrorOr<void> bind(Credentials const&, Userspace<sockaddr const*>, socklen_t) override;
virtual ErrorOr<void> connect(OpenFileDescription&, Userspace<sockaddr const*>, socklen_t) override;
virtual ErrorOr<void> listen(size_t) override;
virtual void get_local_address(sockaddr*, socklen_t*) override;

2
Kernel/Net/Socket.h
View File

@ -72,7 +72,7 @@ public:
ErrorOr<void> shutdown(int how);
virtual ErrorOr<void> bind(Userspace<sockaddr const*>, socklen_t) = 0;
virtual ErrorOr<void> bind(Credentials const&, Userspace<sockaddr const*>, socklen_t) = 0;
virtual ErrorOr<void> connect(OpenFileDescription&, Userspace<sockaddr const*>, socklen_t) = 0;
virtual ErrorOr<void> listen(size_t) = 0;
virtual void get_local_address(sockaddr*, socklen_t*) = 0;

2
Kernel/Syscalls/socket.cpp
View File

@ -56,7 +56,7 @@ ErrorOr<FlatPtr> Process::sys$bind(int sockfd, Userspace<sockaddr const*> addres
return ENOTSOCK;
auto& socket = *description->socket();
REQUIRE_PROMISE_FOR_SOCKET_DOMAIN(socket.domain());
TRY(socket.bind(address, address_length));
TRY(socket.bind(credentials(), address, address_length));
return 0;
}