1cde5492fSlogin use core::cmp::min; 2cde5492fSlogin 3cde5492fSlogin use alloc::{boxed::Box, sync::Arc}; 4cde5492fSlogin use num_traits::{FromPrimitive, ToPrimitive}; 5cde5492fSlogin use smoltcp::wire; 6cde5492fSlogin 7cde5492fSlogin use crate::{ 8cde5492fSlogin filesystem::vfs::{ 9cde5492fSlogin file::{File, FileMode}, 10cde5492fSlogin syscall::{IoVec, IoVecs}, 11cde5492fSlogin }, 12ab5c8ca4Slogin include::bindings::bindings::verify_area, 13ab5c8ca4Slogin libs::spinlock::SpinLockGuard, 14cde5492fSlogin net::socket::{AddressFamily, SOL_SOCKET}, 151496ba7bSLoGin process::ProcessManager, 16ab5c8ca4Slogin syscall::{Syscall, SystemError}, 17cde5492fSlogin }; 18cde5492fSlogin 19cde5492fSlogin use super::{ 20cde5492fSlogin socket::{PosixSocketType, RawSocket, SocketInode, SocketOptions, TcpSocket, UdpSocket}, 21cde5492fSlogin Endpoint, Protocol, ShutdownType, Socket, 22cde5492fSlogin }; 23cde5492fSlogin 24*c47fe904SLoGin /// Flags for socket, socketpair, accept4 25*c47fe904SLoGin const SOCK_CLOEXEC: FileMode = FileMode::O_CLOEXEC; 26*c47fe904SLoGin const SOCK_NONBLOCK: FileMode = FileMode::O_NONBLOCK; 27*c47fe904SLoGin 28ab5c8ca4Slogin impl Syscall { 29cde5492fSlogin /// @brief sys_socket系统调用的实际执行函数 30cde5492fSlogin /// 31cde5492fSlogin /// @param address_family 地址族 32cde5492fSlogin /// @param socket_type socket类型 33cde5492fSlogin /// @param protocol 传输协议 34ab5c8ca4Slogin pub fn socket( 35cde5492fSlogin address_family: usize, 36cde5492fSlogin socket_type: usize, 37cde5492fSlogin protocol: usize, 38ab5c8ca4Slogin ) -> Result<usize, SystemError> { 39cde5492fSlogin let address_family = AddressFamily::try_from(address_family as u16)?; 40cde5492fSlogin let socket_type = PosixSocketType::try_from((socket_type & 0xf) as u8)?; 41cde5492fSlogin // kdebug!("do_socket: address_family: {address_family:?}, socket_type: {socket_type:?}, protocol: {protocol}"); 42cde5492fSlogin // 根据地址族和socket类型创建socket 43cde5492fSlogin let socket: Box<dyn Socket> = match address_family { 44cde5492fSlogin AddressFamily::Unix | AddressFamily::INet => match socket_type { 45cde5492fSlogin PosixSocketType::Stream => Box::new(TcpSocket::new(SocketOptions::default())), 46cde5492fSlogin PosixSocketType::Datagram => Box::new(UdpSocket::new(SocketOptions::default())), 47cde5492fSlogin PosixSocketType::Raw => Box::new(RawSocket::new( 48cde5492fSlogin Protocol::from(protocol as u8), 49cde5492fSlogin SocketOptions::default(), 50cde5492fSlogin )), 51cde5492fSlogin _ => { 52cde5492fSlogin // kdebug!("do_socket: EINVAL"); 53cde5492fSlogin return Err(SystemError::EINVAL); 54cde5492fSlogin } 55cde5492fSlogin }, 56cde5492fSlogin _ => { 57cde5492fSlogin // kdebug!("do_socket: EAFNOSUPPORT"); 58cde5492fSlogin return Err(SystemError::EAFNOSUPPORT); 59cde5492fSlogin } 60cde5492fSlogin }; 61cde5492fSlogin // kdebug!("do_socket: socket: {socket:?}"); 62cde5492fSlogin let socketinode: Arc<SocketInode> = SocketInode::new(socket); 63cde5492fSlogin let f = File::new(socketinode, FileMode::O_RDWR)?; 64cde5492fSlogin // kdebug!("do_socket: f: {f:?}"); 65cde5492fSlogin // 把socket添加到当前进程的文件描述符表中 661496ba7bSLoGin let binding = ProcessManager::current_pcb().fd_table(); 671496ba7bSLoGin let mut fd_table_guard = binding.write(); 681496ba7bSLoGin 691496ba7bSLoGin let fd = fd_table_guard.alloc_fd(f, None).map(|x| x as usize); 701496ba7bSLoGin drop(fd_table_guard); 71cde5492fSlogin // kdebug!("do_socket: fd: {fd:?}"); 72cde5492fSlogin return fd; 73cde5492fSlogin } 74cde5492fSlogin 75cde5492fSlogin /// @brief sys_setsockopt系统调用的实际执行函数 76cde5492fSlogin /// 77cde5492fSlogin /// @param fd 文件描述符 78cde5492fSlogin /// @param level 选项级别 79cde5492fSlogin /// @param optname 选项名称 80cde5492fSlogin /// @param optval 选项值 81cde5492fSlogin /// @param optlen optval缓冲区长度 82ab5c8ca4Slogin pub fn setsockopt( 83cde5492fSlogin fd: usize, 84cde5492fSlogin level: usize, 85cde5492fSlogin optname: usize, 86ab5c8ca4Slogin optval: &[u8], 87ab5c8ca4Slogin ) -> Result<usize, SystemError> { 881496ba7bSLoGin let socket_inode: Arc<SocketInode> = ProcessManager::current_pcb() 89cde5492fSlogin .get_socket(fd as i32) 90cde5492fSlogin .ok_or(SystemError::EBADF)?; 91cde5492fSlogin // 获取内层的socket(真正的数据) 92ab5c8ca4Slogin let socket: SpinLockGuard<Box<dyn Socket>> = socket_inode.inner(); 93ab5c8ca4Slogin return socket.setsockopt(level, optname, optval).map(|_| 0); 94cde5492fSlogin } 95cde5492fSlogin 96cde5492fSlogin /// @brief sys_getsockopt系统调用的实际执行函数 97cde5492fSlogin /// 98cde5492fSlogin /// 参考:https://man7.org/linux/man-pages/man2/setsockopt.2.html 99cde5492fSlogin /// 100cde5492fSlogin /// @param fd 文件描述符 101cde5492fSlogin /// @param level 选项级别 102cde5492fSlogin /// @param optname 选项名称 103cde5492fSlogin /// @param optval 返回的选项值 104cde5492fSlogin /// @param optlen 返回的optval缓冲区长度 105ab5c8ca4Slogin pub fn getsockopt( 106cde5492fSlogin fd: usize, 107cde5492fSlogin level: usize, 108cde5492fSlogin optname: usize, 109cde5492fSlogin optval: *mut u8, 110cde5492fSlogin optlen: *mut u32, 111ab5c8ca4Slogin ) -> Result<usize, SystemError> { 112cde5492fSlogin // 获取socket 113cde5492fSlogin let optval = optval as *mut u32; 1141496ba7bSLoGin let binding: Arc<SocketInode> = ProcessManager::current_pcb() 115cde5492fSlogin .get_socket(fd as i32) 116cde5492fSlogin .ok_or(SystemError::EBADF)?; 117cde5492fSlogin let socket = binding.inner(); 118cde5492fSlogin 119cde5492fSlogin if level as u8 == SOL_SOCKET { 120ab5c8ca4Slogin let optname = PosixSocketOption::try_from(optname as i32) 121ab5c8ca4Slogin .map_err(|_| SystemError::ENOPROTOOPT)?; 122cde5492fSlogin match optname { 123cde5492fSlogin PosixSocketOption::SO_SNDBUF => { 124cde5492fSlogin // 返回发送缓冲区大小 125cde5492fSlogin unsafe { 126cde5492fSlogin *optval = socket.metadata()?.send_buf_size as u32; 127cde5492fSlogin *optlen = core::mem::size_of::<u32>() as u32; 128cde5492fSlogin } 129cde5492fSlogin return Ok(0); 130cde5492fSlogin } 131cde5492fSlogin PosixSocketOption::SO_RCVBUF => { 132cde5492fSlogin let optval = optval as *mut u32; 133cde5492fSlogin // 返回默认的接收缓冲区大小 134cde5492fSlogin unsafe { 135cde5492fSlogin *optval = socket.metadata()?.recv_buf_size as u32; 136cde5492fSlogin *optlen = core::mem::size_of::<u32>() as u32; 137cde5492fSlogin } 138cde5492fSlogin return Ok(0); 139cde5492fSlogin } 140cde5492fSlogin _ => { 141cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 142cde5492fSlogin } 143cde5492fSlogin } 144cde5492fSlogin } 145cde5492fSlogin drop(socket); 146cde5492fSlogin 147cde5492fSlogin // To manipulate options at any other level the 148cde5492fSlogin // protocol number of the appropriate protocol controlling the 149cde5492fSlogin // option is supplied. For example, to indicate that an option is 150cde5492fSlogin // to be interpreted by the TCP protocol, level should be set to the 151cde5492fSlogin // protocol number of TCP. 152cde5492fSlogin 153cde5492fSlogin let posix_protocol = 154cde5492fSlogin PosixIpProtocol::try_from(level as u16).map_err(|_| SystemError::ENOPROTOOPT)?; 155cde5492fSlogin if posix_protocol == PosixIpProtocol::TCP { 156cde5492fSlogin let optname = PosixTcpSocketOptions::try_from(optname as i32) 157cde5492fSlogin .map_err(|_| SystemError::ENOPROTOOPT)?; 158cde5492fSlogin match optname { 159cde5492fSlogin PosixTcpSocketOptions::Congestion => return Ok(0), 160cde5492fSlogin _ => { 161cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 162cde5492fSlogin } 163cde5492fSlogin } 164cde5492fSlogin } 165cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 166cde5492fSlogin } 167cde5492fSlogin 168cde5492fSlogin /// @brief sys_connect系统调用的实际执行函数 169cde5492fSlogin /// 170cde5492fSlogin /// @param fd 文件描述符 171cde5492fSlogin /// @param addr SockAddr 172cde5492fSlogin /// @param addrlen 地址长度 173cde5492fSlogin /// 174cde5492fSlogin /// @return 成功返回0,失败返回错误码 175ab5c8ca4Slogin pub fn connect(fd: usize, addr: *const SockAddr, addrlen: usize) -> Result<usize, SystemError> { 176cde5492fSlogin let endpoint: Endpoint = SockAddr::to_endpoint(addr, addrlen)?; 1771496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 178cde5492fSlogin .get_socket(fd as i32) 179cde5492fSlogin .ok_or(SystemError::EBADF)?; 1802f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 181cde5492fSlogin // kdebug!("connect to {:?}...", endpoint); 182cde5492fSlogin socket.connect(endpoint)?; 183cde5492fSlogin return Ok(0); 184cde5492fSlogin } 185cde5492fSlogin 186cde5492fSlogin /// @brief sys_bind系统调用的实际执行函数 187cde5492fSlogin /// 188cde5492fSlogin /// @param fd 文件描述符 189cde5492fSlogin /// @param addr SockAddr 190cde5492fSlogin /// @param addrlen 地址长度 191cde5492fSlogin /// 192cde5492fSlogin /// @return 成功返回0,失败返回错误码 193ab5c8ca4Slogin pub fn bind(fd: usize, addr: *const SockAddr, addrlen: usize) -> Result<usize, SystemError> { 194cde5492fSlogin let endpoint: Endpoint = SockAddr::to_endpoint(addr, addrlen)?; 1951496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 196cde5492fSlogin .get_socket(fd as i32) 197cde5492fSlogin .ok_or(SystemError::EBADF)?; 1982f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 199cde5492fSlogin socket.bind(endpoint)?; 200cde5492fSlogin return Ok(0); 201cde5492fSlogin } 202cde5492fSlogin 203cde5492fSlogin /// @brief sys_sendto系统调用的实际执行函数 204cde5492fSlogin /// 205cde5492fSlogin /// @param fd 文件描述符 206cde5492fSlogin /// @param buf 发送缓冲区 207cde5492fSlogin /// @param flags 标志 208cde5492fSlogin /// @param addr SockAddr 209cde5492fSlogin /// @param addrlen 地址长度 210cde5492fSlogin /// 211cde5492fSlogin /// @return 成功返回发送的字节数,失败返回错误码 212ab5c8ca4Slogin pub fn sendto( 213cde5492fSlogin fd: usize, 214ab5c8ca4Slogin buf: &[u8], 215ab5c8ca4Slogin _flags: u32, 216cde5492fSlogin addr: *const SockAddr, 217cde5492fSlogin addrlen: usize, 218ab5c8ca4Slogin ) -> Result<usize, SystemError> { 219cde5492fSlogin let endpoint = if addr.is_null() { 220cde5492fSlogin None 221cde5492fSlogin } else { 222cde5492fSlogin Some(SockAddr::to_endpoint(addr, addrlen)?) 223cde5492fSlogin }; 224cde5492fSlogin 2251496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 226cde5492fSlogin .get_socket(fd as i32) 227cde5492fSlogin .ok_or(SystemError::EBADF)?; 2282f6f547aSGnoCiYeH let socket = unsafe { socket.inner_no_preempt() }; 229ab5c8ca4Slogin return socket.write(buf, endpoint); 230cde5492fSlogin } 231cde5492fSlogin 232cde5492fSlogin /// @brief sys_recvfrom系统调用的实际执行函数 233cde5492fSlogin /// 234cde5492fSlogin /// @param fd 文件描述符 235cde5492fSlogin /// @param buf 接收缓冲区 236cde5492fSlogin /// @param flags 标志 237cde5492fSlogin /// @param addr SockAddr 238cde5492fSlogin /// @param addrlen 地址长度 239cde5492fSlogin /// 240cde5492fSlogin /// @return 成功返回接收的字节数,失败返回错误码 241ab5c8ca4Slogin pub fn recvfrom( 242cde5492fSlogin fd: usize, 243ab5c8ca4Slogin buf: &mut [u8], 244ab5c8ca4Slogin _flags: u32, 245cde5492fSlogin addr: *mut SockAddr, 246cde5492fSlogin addrlen: *mut u32, 247ab5c8ca4Slogin ) -> Result<usize, SystemError> { 2481496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 249cde5492fSlogin .get_socket(fd as i32) 250cde5492fSlogin .ok_or(SystemError::EBADF)?; 2512f6f547aSGnoCiYeH let socket = unsafe { socket.inner_no_preempt() }; 252cde5492fSlogin 253cde5492fSlogin let (n, endpoint) = socket.read(buf); 254cde5492fSlogin drop(socket); 255cde5492fSlogin 256cde5492fSlogin let n: usize = n?; 257cde5492fSlogin 258cde5492fSlogin // 如果有地址信息,将地址信息写入用户空间 259cde5492fSlogin if !addr.is_null() { 260cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 261cde5492fSlogin unsafe { 262cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 263cde5492fSlogin } 264cde5492fSlogin } 265ab5c8ca4Slogin return Ok(n); 266cde5492fSlogin } 267cde5492fSlogin 268cde5492fSlogin /// @brief sys_recvmsg系统调用的实际执行函数 269cde5492fSlogin /// 270cde5492fSlogin /// @param fd 文件描述符 271cde5492fSlogin /// @param msg MsgHdr 272ab5c8ca4Slogin /// @param flags 标志,暂时未使用 273cde5492fSlogin /// 274cde5492fSlogin /// @return 成功返回接收的字节数,失败返回错误码 275ab5c8ca4Slogin pub fn recvmsg(fd: usize, msg: &mut MsgHdr, _flags: u32) -> Result<usize, SystemError> { 276cde5492fSlogin // 检查每个缓冲区地址是否合法,生成iovecs 277cde5492fSlogin let mut iovs = unsafe { IoVecs::from_user(msg.msg_iov, msg.msg_iovlen, true)? }; 278cde5492fSlogin 2791496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 280cde5492fSlogin .get_socket(fd as i32) 281cde5492fSlogin .ok_or(SystemError::EBADF)?; 2822f6f547aSGnoCiYeH let socket = unsafe { socket.inner_no_preempt() }; 283cde5492fSlogin 284cde5492fSlogin let mut buf = iovs.new_buf(true); 285cde5492fSlogin // 从socket中读取数据 286cde5492fSlogin let (n, endpoint) = socket.read(&mut buf); 287cde5492fSlogin drop(socket); 288cde5492fSlogin 289cde5492fSlogin let n: usize = n?; 290cde5492fSlogin 291cde5492fSlogin // 将数据写入用户空间的iovecs 292cde5492fSlogin iovs.scatter(&buf[..n]); 293cde5492fSlogin 294cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 295cde5492fSlogin unsafe { 296cde5492fSlogin sockaddr_in.write_to_user(msg.msg_name, &mut msg.msg_namelen)?; 297cde5492fSlogin } 298ab5c8ca4Slogin return Ok(n); 299cde5492fSlogin } 300cde5492fSlogin 301cde5492fSlogin /// @brief sys_listen系统调用的实际执行函数 302cde5492fSlogin /// 303cde5492fSlogin /// @param fd 文件描述符 304ab5c8ca4Slogin /// @param backlog 队列最大连接数 305cde5492fSlogin /// 306cde5492fSlogin /// @return 成功返回0,失败返回错误码 307ab5c8ca4Slogin pub fn listen(fd: usize, backlog: usize) -> Result<usize, SystemError> { 3081496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 309cde5492fSlogin .get_socket(fd as i32) 310cde5492fSlogin .ok_or(SystemError::EBADF)?; 3112f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 312cde5492fSlogin socket.listen(backlog)?; 313cde5492fSlogin return Ok(0); 314cde5492fSlogin } 315cde5492fSlogin 316cde5492fSlogin /// @brief sys_shutdown系统调用的实际执行函数 317cde5492fSlogin /// 318cde5492fSlogin /// @param fd 文件描述符 319cde5492fSlogin /// @param how 关闭方式 320cde5492fSlogin /// 321cde5492fSlogin /// @return 成功返回0,失败返回错误码 322ab5c8ca4Slogin pub fn shutdown(fd: usize, how: usize) -> Result<usize, SystemError> { 3231496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 324cde5492fSlogin .get_socket(fd as i32) 325cde5492fSlogin .ok_or(SystemError::EBADF)?; 3262f6f547aSGnoCiYeH let socket = unsafe { socket.inner_no_preempt() }; 327cde5492fSlogin socket.shutdown(ShutdownType::try_from(how as i32)?)?; 328cde5492fSlogin return Ok(0); 329cde5492fSlogin } 330cde5492fSlogin 331cde5492fSlogin /// @brief sys_accept系统调用的实际执行函数 332cde5492fSlogin /// 333cde5492fSlogin /// @param fd 文件描述符 334cde5492fSlogin /// @param addr SockAddr 335cde5492fSlogin /// @param addrlen 地址长度 336cde5492fSlogin /// 337cde5492fSlogin /// @return 成功返回新的文件描述符,失败返回错误码 338ab5c8ca4Slogin pub fn accept(fd: usize, addr: *mut SockAddr, addrlen: *mut u32) -> Result<usize, SystemError> { 339*c47fe904SLoGin return Self::do_accept(fd, addr, addrlen, 0); 340*c47fe904SLoGin } 341*c47fe904SLoGin 342*c47fe904SLoGin /// sys_accept4 - accept a connection on a socket 343*c47fe904SLoGin /// 344*c47fe904SLoGin /// 345*c47fe904SLoGin /// If flags is 0, then accept4() is the same as accept(). The 346*c47fe904SLoGin /// following values can be bitwise ORed in flags to obtain different 347*c47fe904SLoGin /// behavior: 348*c47fe904SLoGin /// 349*c47fe904SLoGin /// - SOCK_NONBLOCK 350*c47fe904SLoGin /// Set the O_NONBLOCK file status flag on the open file 351*c47fe904SLoGin /// description (see open(2)) referred to by the new file 352*c47fe904SLoGin /// descriptor. Using this flag saves extra calls to fcntl(2) 353*c47fe904SLoGin /// to achieve the same result. 354*c47fe904SLoGin /// 355*c47fe904SLoGin /// - SOCK_CLOEXEC 356*c47fe904SLoGin /// Set the close-on-exec (FD_CLOEXEC) flag on the new file 357*c47fe904SLoGin /// descriptor. See the description of the O_CLOEXEC flag in 358*c47fe904SLoGin /// open(2) for reasons why this may be useful. 359*c47fe904SLoGin pub fn accept4( 360*c47fe904SLoGin fd: usize, 361*c47fe904SLoGin addr: *mut SockAddr, 362*c47fe904SLoGin addrlen: *mut u32, 363*c47fe904SLoGin mut flags: u32, 364*c47fe904SLoGin ) -> Result<usize, SystemError> { 365*c47fe904SLoGin // 如果flags不合法,返回错误 366*c47fe904SLoGin if (flags & (!(SOCK_CLOEXEC | SOCK_NONBLOCK)).bits()) != 0 { 367*c47fe904SLoGin return Err(SystemError::EINVAL); 368*c47fe904SLoGin } 369*c47fe904SLoGin 370*c47fe904SLoGin if SOCK_NONBLOCK != FileMode::O_NONBLOCK && ((flags & SOCK_NONBLOCK.bits()) != 0) { 371*c47fe904SLoGin flags = (flags & !SOCK_NONBLOCK.bits()) | FileMode::O_NONBLOCK.bits(); 372*c47fe904SLoGin } 373*c47fe904SLoGin 374*c47fe904SLoGin return Self::do_accept(fd, addr, addrlen, flags); 375*c47fe904SLoGin } 376*c47fe904SLoGin 377*c47fe904SLoGin fn do_accept( 378*c47fe904SLoGin fd: usize, 379*c47fe904SLoGin addr: *mut SockAddr, 380*c47fe904SLoGin addrlen: *mut u32, 381*c47fe904SLoGin flags: u32, 382*c47fe904SLoGin ) -> Result<usize, SystemError> { 3831496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 384cde5492fSlogin .get_socket(fd as i32) 385cde5492fSlogin .ok_or(SystemError::EBADF)?; 386cde5492fSlogin // kdebug!("accept: socket={:?}", socket); 3872f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 388cde5492fSlogin // 从socket中接收连接 389cde5492fSlogin let (new_socket, remote_endpoint) = socket.accept()?; 390cde5492fSlogin drop(socket); 391cde5492fSlogin 392cde5492fSlogin // kdebug!("accept: new_socket={:?}", new_socket); 393cde5492fSlogin // Insert the new socket into the file descriptor vector 394cde5492fSlogin let new_socket: Arc<SocketInode> = SocketInode::new(new_socket); 395*c47fe904SLoGin 396*c47fe904SLoGin let mut file_mode = FileMode::O_RDWR; 397*c47fe904SLoGin if flags & FileMode::O_NONBLOCK.bits() != 0 { 398*c47fe904SLoGin file_mode |= FileMode::O_NONBLOCK; 399*c47fe904SLoGin } 400*c47fe904SLoGin if flags & FileMode::O_CLOEXEC.bits() != 0 { 401*c47fe904SLoGin file_mode |= FileMode::O_CLOEXEC; 402*c47fe904SLoGin } 403*c47fe904SLoGin 4041496ba7bSLoGin let new_fd = ProcessManager::current_pcb() 4051496ba7bSLoGin .fd_table() 4061496ba7bSLoGin .write() 407*c47fe904SLoGin .alloc_fd(File::new(new_socket, file_mode)?, None)?; 408cde5492fSlogin // kdebug!("accept: new_fd={}", new_fd); 409cde5492fSlogin if !addr.is_null() { 410cde5492fSlogin // kdebug!("accept: write remote_endpoint to user"); 411cde5492fSlogin // 将对端地址写入用户空间 412cde5492fSlogin let sockaddr_in = SockAddr::from(remote_endpoint); 413cde5492fSlogin unsafe { 414cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 415cde5492fSlogin } 416cde5492fSlogin } 417ab5c8ca4Slogin return Ok(new_fd as usize); 418cde5492fSlogin } 419cde5492fSlogin 420cde5492fSlogin /// @brief sys_getsockname系统调用的实际执行函数 421cde5492fSlogin /// 422cde5492fSlogin /// Returns the current address to which the socket 423cde5492fSlogin /// sockfd is bound, in the buffer pointed to by addr. 424cde5492fSlogin /// 425cde5492fSlogin /// @param fd 文件描述符 426cde5492fSlogin /// @param addr SockAddr 427cde5492fSlogin /// @param addrlen 地址长度 428cde5492fSlogin /// 429cde5492fSlogin /// @return 成功返回0,失败返回错误码 430ab5c8ca4Slogin pub fn getsockname( 431cde5492fSlogin fd: usize, 432cde5492fSlogin addr: *mut SockAddr, 433cde5492fSlogin addrlen: *mut u32, 434ab5c8ca4Slogin ) -> Result<usize, SystemError> { 435cde5492fSlogin if addr.is_null() { 436cde5492fSlogin return Err(SystemError::EINVAL); 437cde5492fSlogin } 4381496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 439cde5492fSlogin .get_socket(fd as i32) 440cde5492fSlogin .ok_or(SystemError::EBADF)?; 441cde5492fSlogin let socket = socket.inner(); 442cde5492fSlogin let endpoint: Endpoint = socket.endpoint().ok_or(SystemError::EINVAL)?; 443cde5492fSlogin drop(socket); 444cde5492fSlogin 445cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 446cde5492fSlogin unsafe { 447cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 448cde5492fSlogin } 449cde5492fSlogin return Ok(0); 450cde5492fSlogin } 451cde5492fSlogin 452cde5492fSlogin /// @brief sys_getpeername系统调用的实际执行函数 453cde5492fSlogin /// 454cde5492fSlogin /// @param fd 文件描述符 455cde5492fSlogin /// @param addr SockAddr 456cde5492fSlogin /// @param addrlen 地址长度 457cde5492fSlogin /// 458cde5492fSlogin /// @return 成功返回0,失败返回错误码 459ab5c8ca4Slogin pub fn getpeername( 460cde5492fSlogin fd: usize, 461cde5492fSlogin addr: *mut SockAddr, 462cde5492fSlogin addrlen: *mut u32, 463ab5c8ca4Slogin ) -> Result<usize, SystemError> { 464cde5492fSlogin if addr.is_null() { 465cde5492fSlogin return Err(SystemError::EINVAL); 466cde5492fSlogin } 467cde5492fSlogin 4681496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 469cde5492fSlogin .get_socket(fd as i32) 470cde5492fSlogin .ok_or(SystemError::EBADF)?; 471cde5492fSlogin let socket = socket.inner(); 472cde5492fSlogin let endpoint: Endpoint = socket.peer_endpoint().ok_or(SystemError::EINVAL)?; 473cde5492fSlogin drop(socket); 474cde5492fSlogin 475cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 476cde5492fSlogin unsafe { 477cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 478cde5492fSlogin } 479cde5492fSlogin return Ok(0); 480cde5492fSlogin } 481ab5c8ca4Slogin } 482cde5492fSlogin 483cde5492fSlogin // 参考资料: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/netinet_in.h.html#tag_13_32 484cde5492fSlogin #[repr(C)] 485cde5492fSlogin #[derive(Debug, Clone, Copy)] 486cde5492fSlogin pub struct SockAddrIn { 487cde5492fSlogin pub sin_family: u16, 488cde5492fSlogin pub sin_port: u16, 489cde5492fSlogin pub sin_addr: u32, 490cde5492fSlogin pub sin_zero: [u8; 8], 491cde5492fSlogin } 492cde5492fSlogin 493cde5492fSlogin #[repr(C)] 494cde5492fSlogin #[derive(Debug, Clone, Copy)] 495cde5492fSlogin pub struct SockAddrUn { 496cde5492fSlogin pub sun_family: u16, 497cde5492fSlogin pub sun_path: [u8; 108], 498cde5492fSlogin } 499cde5492fSlogin 500cde5492fSlogin #[repr(C)] 501cde5492fSlogin #[derive(Debug, Clone, Copy)] 502cde5492fSlogin pub struct SockAddrLl { 503cde5492fSlogin pub sll_family: u16, 504cde5492fSlogin pub sll_protocol: u16, 505cde5492fSlogin pub sll_ifindex: u32, 506cde5492fSlogin pub sll_hatype: u16, 507cde5492fSlogin pub sll_pkttype: u8, 508cde5492fSlogin pub sll_halen: u8, 509cde5492fSlogin pub sll_addr: [u8; 8], 510cde5492fSlogin } 511cde5492fSlogin 512cde5492fSlogin #[repr(C)] 513cde5492fSlogin #[derive(Debug, Clone, Copy)] 514cde5492fSlogin pub struct SockAddrNl { 515cde5492fSlogin nl_family: u16, 516cde5492fSlogin nl_pad: u16, 517cde5492fSlogin nl_pid: u32, 518cde5492fSlogin nl_groups: u32, 519cde5492fSlogin } 520cde5492fSlogin 521cde5492fSlogin #[repr(C)] 522cde5492fSlogin #[derive(Debug, Clone, Copy)] 523cde5492fSlogin pub struct SockAddrPlaceholder { 524cde5492fSlogin pub family: u16, 525cde5492fSlogin pub data: [u8; 14], 526cde5492fSlogin } 527cde5492fSlogin 528cde5492fSlogin #[repr(C)] 529cde5492fSlogin #[derive(Clone, Copy)] 530cde5492fSlogin pub union SockAddr { 531cde5492fSlogin pub family: u16, 532cde5492fSlogin pub addr_in: SockAddrIn, 533cde5492fSlogin pub addr_un: SockAddrUn, 534cde5492fSlogin pub addr_ll: SockAddrLl, 535cde5492fSlogin pub addr_nl: SockAddrNl, 536cde5492fSlogin pub addr_ph: SockAddrPlaceholder, 537cde5492fSlogin } 538cde5492fSlogin 539cde5492fSlogin impl SockAddr { 540cde5492fSlogin /// @brief 把用户传入的SockAddr转换为Endpoint结构体 541cde5492fSlogin pub fn to_endpoint(addr: *const SockAddr, len: usize) -> Result<Endpoint, SystemError> { 542cde5492fSlogin if unsafe { 543cde5492fSlogin verify_area( 544cde5492fSlogin addr as usize as u64, 545cde5492fSlogin core::mem::size_of::<SockAddr>() as u64, 546cde5492fSlogin ) 547cde5492fSlogin } == false 548cde5492fSlogin { 549cde5492fSlogin return Err(SystemError::EFAULT); 550cde5492fSlogin } 551cde5492fSlogin 552cde5492fSlogin let addr = unsafe { addr.as_ref() }.ok_or(SystemError::EFAULT)?; 553cde5492fSlogin if len < addr.len()? { 554cde5492fSlogin return Err(SystemError::EINVAL); 555cde5492fSlogin } 556cde5492fSlogin unsafe { 557cde5492fSlogin match AddressFamily::try_from(addr.family)? { 558cde5492fSlogin AddressFamily::INet => { 559cde5492fSlogin let addr_in: SockAddrIn = addr.addr_in; 560cde5492fSlogin 561cde5492fSlogin let ip: wire::IpAddress = wire::IpAddress::from(wire::Ipv4Address::from_bytes( 562cde5492fSlogin &u32::from_be(addr_in.sin_addr).to_be_bytes()[..], 563cde5492fSlogin )); 564cde5492fSlogin let port = u16::from_be(addr_in.sin_port); 565cde5492fSlogin 566cde5492fSlogin return Ok(Endpoint::Ip(Some(wire::IpEndpoint::new(ip, port)))); 567cde5492fSlogin } 568cde5492fSlogin AddressFamily::Packet => { 569cde5492fSlogin // TODO: support packet socket 570cde5492fSlogin return Err(SystemError::EINVAL); 571cde5492fSlogin } 572cde5492fSlogin AddressFamily::Netlink => { 573cde5492fSlogin // TODO: support netlink socket 574cde5492fSlogin return Err(SystemError::EINVAL); 575cde5492fSlogin } 576cde5492fSlogin AddressFamily::Unix => { 577cde5492fSlogin return Err(SystemError::EINVAL); 578cde5492fSlogin } 579cde5492fSlogin _ => { 580cde5492fSlogin return Err(SystemError::EINVAL); 581cde5492fSlogin } 582cde5492fSlogin } 583cde5492fSlogin } 584cde5492fSlogin } 585cde5492fSlogin 586cde5492fSlogin /// @brief 获取地址长度 587cde5492fSlogin pub fn len(&self) -> Result<usize, SystemError> { 588cde5492fSlogin let ret = match AddressFamily::try_from(unsafe { self.family })? { 589cde5492fSlogin AddressFamily::INet => Ok(core::mem::size_of::<SockAddrIn>()), 590cde5492fSlogin AddressFamily::Packet => Ok(core::mem::size_of::<SockAddrLl>()), 591cde5492fSlogin AddressFamily::Netlink => Ok(core::mem::size_of::<SockAddrNl>()), 592cde5492fSlogin AddressFamily::Unix => Err(SystemError::EINVAL), 593cde5492fSlogin _ => Err(SystemError::EINVAL), 594cde5492fSlogin }; 595cde5492fSlogin 596cde5492fSlogin return ret; 597cde5492fSlogin } 598cde5492fSlogin 599cde5492fSlogin /// @brief 把SockAddr的数据写入用户空间 600cde5492fSlogin /// 601cde5492fSlogin /// @param addr 用户空间的SockAddr的地址 602cde5492fSlogin /// @param len 要写入的长度 603cde5492fSlogin /// 604cde5492fSlogin /// @return 成功返回写入的长度,失败返回错误码 605cde5492fSlogin pub unsafe fn write_to_user( 606cde5492fSlogin &self, 607cde5492fSlogin addr: *mut SockAddr, 608cde5492fSlogin addr_len: *mut u32, 609cde5492fSlogin ) -> Result<usize, SystemError> { 610cde5492fSlogin // 当用户传入的地址或者长度为空时,直接返回0 611cde5492fSlogin if addr.is_null() || addr_len.is_null() { 612cde5492fSlogin return Ok(0); 613cde5492fSlogin } 614cde5492fSlogin // 检查用户传入的地址是否合法 615cde5492fSlogin if !verify_area( 616cde5492fSlogin addr as usize as u64, 617cde5492fSlogin core::mem::size_of::<SockAddr>() as u64, 618cde5492fSlogin ) || !verify_area(addr_len as usize as u64, core::mem::size_of::<u32>() as u64) 619cde5492fSlogin { 620cde5492fSlogin return Err(SystemError::EFAULT); 621cde5492fSlogin } 622cde5492fSlogin 623cde5492fSlogin let to_write = min(self.len()?, *addr_len as usize); 624cde5492fSlogin if to_write > 0 { 625cde5492fSlogin let buf = core::slice::from_raw_parts_mut(addr as *mut u8, to_write); 626cde5492fSlogin buf.copy_from_slice(core::slice::from_raw_parts( 627cde5492fSlogin self as *const SockAddr as *const u8, 628cde5492fSlogin to_write, 629cde5492fSlogin )); 630cde5492fSlogin } 631cde5492fSlogin *addr_len = self.len()? as u32; 632cde5492fSlogin return Ok(to_write); 633cde5492fSlogin } 634cde5492fSlogin } 635cde5492fSlogin 636cde5492fSlogin impl From<Endpoint> for SockAddr { 637cde5492fSlogin fn from(value: Endpoint) -> Self { 638cde5492fSlogin match value { 639cde5492fSlogin Endpoint::Ip(ip_endpoint) => { 640cde5492fSlogin // 未指定地址 641cde5492fSlogin if let None = ip_endpoint { 642cde5492fSlogin return SockAddr { 643cde5492fSlogin addr_ph: SockAddrPlaceholder { 644cde5492fSlogin family: AddressFamily::Unspecified as u16, 645cde5492fSlogin data: [0; 14], 646cde5492fSlogin }, 647cde5492fSlogin }; 648cde5492fSlogin } 649cde5492fSlogin // 指定了地址 650cde5492fSlogin let ip_endpoint = ip_endpoint.unwrap(); 651cde5492fSlogin match ip_endpoint.addr { 652cde5492fSlogin wire::IpAddress::Ipv4(ipv4_addr) => { 653cde5492fSlogin let addr_in = SockAddrIn { 654cde5492fSlogin sin_family: AddressFamily::INet as u16, 655cde5492fSlogin sin_port: ip_endpoint.port.to_be(), 656cde5492fSlogin sin_addr: u32::from_be_bytes(ipv4_addr.0).to_be(), 657cde5492fSlogin sin_zero: [0; 8], 658cde5492fSlogin }; 659cde5492fSlogin 660cde5492fSlogin return SockAddr { addr_in }; 661cde5492fSlogin } 662cde5492fSlogin _ => { 663cde5492fSlogin unimplemented!("not support ipv6"); 664cde5492fSlogin } 665cde5492fSlogin } 666cde5492fSlogin } 667cde5492fSlogin 668cde5492fSlogin Endpoint::LinkLayer(link_endpoint) => { 669cde5492fSlogin let addr_ll = SockAddrLl { 670cde5492fSlogin sll_family: AddressFamily::Packet as u16, 671cde5492fSlogin sll_protocol: 0, 672cde5492fSlogin sll_ifindex: link_endpoint.interface as u32, 673cde5492fSlogin sll_hatype: 0, 674cde5492fSlogin sll_pkttype: 0, 675cde5492fSlogin sll_halen: 0, 676cde5492fSlogin sll_addr: [0; 8], 677cde5492fSlogin }; 678cde5492fSlogin 679cde5492fSlogin return SockAddr { addr_ll }; 680cde5492fSlogin } // _ => { 681cde5492fSlogin // // todo: support other endpoint, like Netlink... 682cde5492fSlogin // unimplemented!("not support {value:?}"); 683cde5492fSlogin // } 684cde5492fSlogin } 685cde5492fSlogin } 686cde5492fSlogin } 687cde5492fSlogin 688cde5492fSlogin #[repr(C)] 689cde5492fSlogin #[derive(Debug, Clone, Copy)] 690cde5492fSlogin pub struct MsgHdr { 691cde5492fSlogin /// 指向一个SockAddr结构体的指针 692cde5492fSlogin pub msg_name: *mut SockAddr, 693cde5492fSlogin /// SockAddr结构体的大小 694cde5492fSlogin pub msg_namelen: u32, 695cde5492fSlogin /// scatter/gather array 696cde5492fSlogin pub msg_iov: *mut IoVec, 697cde5492fSlogin /// elements in msg_iov 698cde5492fSlogin pub msg_iovlen: usize, 699cde5492fSlogin /// 辅助数据 700cde5492fSlogin pub msg_control: *mut u8, 701cde5492fSlogin /// 辅助数据长度 702cde5492fSlogin pub msg_controllen: usize, 703cde5492fSlogin /// 接收到的消息的标志 704cde5492fSlogin pub msg_flags: u32, 705cde5492fSlogin } 706cde5492fSlogin 707cde5492fSlogin #[derive(Debug, Clone, Copy, FromPrimitive, ToPrimitive, PartialEq, Eq)] 708cde5492fSlogin pub enum PosixIpProtocol { 709cde5492fSlogin /// Dummy protocol for TCP. 710cde5492fSlogin IP = 0, 711cde5492fSlogin /// Internet Control Message Protocol. 712cde5492fSlogin ICMP = 1, 713cde5492fSlogin /// Internet Group Management Protocol. 714cde5492fSlogin IGMP = 2, 715cde5492fSlogin /// IPIP tunnels (older KA9Q tunnels use 94). 716cde5492fSlogin IPIP = 4, 717cde5492fSlogin /// Transmission Control Protocol. 718cde5492fSlogin TCP = 6, 719cde5492fSlogin /// Exterior Gateway Protocol. 720cde5492fSlogin EGP = 8, 721cde5492fSlogin /// PUP protocol. 722cde5492fSlogin PUP = 12, 723cde5492fSlogin /// User Datagram Protocol. 724cde5492fSlogin UDP = 17, 725cde5492fSlogin /// XNS IDP protocol. 726cde5492fSlogin IDP = 22, 727cde5492fSlogin /// SO Transport Protocol Class 4. 728cde5492fSlogin TP = 29, 729cde5492fSlogin /// Datagram Congestion Control Protocol. 730cde5492fSlogin DCCP = 33, 731cde5492fSlogin /// IPv6-in-IPv4 tunnelling. 732cde5492fSlogin IPv6 = 41, 733cde5492fSlogin /// RSVP Protocol. 734cde5492fSlogin RSVP = 46, 735cde5492fSlogin /// Generic Routing Encapsulation. (Cisco GRE) (rfc 1701, 1702) 736cde5492fSlogin GRE = 47, 737cde5492fSlogin /// Encapsulation Security Payload protocol 738cde5492fSlogin ESP = 50, 739cde5492fSlogin /// Authentication Header protocol 740cde5492fSlogin AH = 51, 741cde5492fSlogin /// Multicast Transport Protocol. 742cde5492fSlogin MTP = 92, 743cde5492fSlogin /// IP option pseudo header for BEET 744cde5492fSlogin BEETPH = 94, 745cde5492fSlogin /// Encapsulation Header. 746cde5492fSlogin ENCAP = 98, 747cde5492fSlogin /// Protocol Independent Multicast. 748cde5492fSlogin PIM = 103, 749cde5492fSlogin /// Compression Header Protocol. 750cde5492fSlogin COMP = 108, 751cde5492fSlogin /// Stream Control Transport Protocol 752cde5492fSlogin SCTP = 132, 753cde5492fSlogin /// UDP-Lite protocol (RFC 3828) 754cde5492fSlogin UDPLITE = 136, 755cde5492fSlogin /// MPLS in IP (RFC 4023) 756cde5492fSlogin MPLSINIP = 137, 757cde5492fSlogin /// Ethernet-within-IPv6 Encapsulation 758cde5492fSlogin ETHERNET = 143, 759cde5492fSlogin /// Raw IP packets 760cde5492fSlogin RAW = 255, 761cde5492fSlogin /// Multipath TCP connection 762cde5492fSlogin MPTCP = 262, 763cde5492fSlogin } 764cde5492fSlogin 765cde5492fSlogin impl TryFrom<u16> for PosixIpProtocol { 766cde5492fSlogin type Error = SystemError; 767cde5492fSlogin 768cde5492fSlogin fn try_from(value: u16) -> Result<Self, Self::Error> { 769cde5492fSlogin match <Self as FromPrimitive>::from_u16(value) { 770cde5492fSlogin Some(p) => Ok(p), 771cde5492fSlogin None => Err(SystemError::EPROTONOSUPPORT), 772cde5492fSlogin } 773cde5492fSlogin } 774cde5492fSlogin } 775cde5492fSlogin 776cde5492fSlogin impl Into<u16> for PosixIpProtocol { 777cde5492fSlogin fn into(self) -> u16 { 778cde5492fSlogin <Self as ToPrimitive>::to_u16(&self).unwrap() 779cde5492fSlogin } 780cde5492fSlogin } 781cde5492fSlogin 782cde5492fSlogin #[allow(non_camel_case_types)] 783cde5492fSlogin #[derive(Debug, Clone, Copy, FromPrimitive, ToPrimitive, PartialEq, Eq)] 784cde5492fSlogin pub enum PosixSocketOption { 785cde5492fSlogin SO_DEBUG = 1, 786cde5492fSlogin SO_REUSEADDR = 2, 787cde5492fSlogin SO_TYPE = 3, 788cde5492fSlogin SO_ERROR = 4, 789cde5492fSlogin SO_DONTROUTE = 5, 790cde5492fSlogin SO_BROADCAST = 6, 791cde5492fSlogin SO_SNDBUF = 7, 792cde5492fSlogin SO_RCVBUF = 8, 793cde5492fSlogin SO_SNDBUFFORCE = 32, 794cde5492fSlogin SO_RCVBUFFORCE = 33, 795cde5492fSlogin SO_KEEPALIVE = 9, 796cde5492fSlogin SO_OOBINLINE = 10, 797cde5492fSlogin SO_NO_CHECK = 11, 798cde5492fSlogin SO_PRIORITY = 12, 799cde5492fSlogin SO_LINGER = 13, 800cde5492fSlogin SO_BSDCOMPAT = 14, 801cde5492fSlogin SO_REUSEPORT = 15, 802cde5492fSlogin SO_PASSCRED = 16, 803cde5492fSlogin SO_PEERCRED = 17, 804cde5492fSlogin SO_RCVLOWAT = 18, 805cde5492fSlogin SO_SNDLOWAT = 19, 806cde5492fSlogin SO_RCVTIMEO_OLD = 20, 807cde5492fSlogin SO_SNDTIMEO_OLD = 21, 808cde5492fSlogin 809cde5492fSlogin SO_SECURITY_AUTHENTICATION = 22, 810cde5492fSlogin SO_SECURITY_ENCRYPTION_TRANSPORT = 23, 811cde5492fSlogin SO_SECURITY_ENCRYPTION_NETWORK = 24, 812cde5492fSlogin 813cde5492fSlogin SO_BINDTODEVICE = 25, 814cde5492fSlogin 815cde5492fSlogin /// 与SO_GET_FILTER相同 816cde5492fSlogin SO_ATTACH_FILTER = 26, 817cde5492fSlogin SO_DETACH_FILTER = 27, 818cde5492fSlogin 819cde5492fSlogin SO_PEERNAME = 28, 820cde5492fSlogin 821cde5492fSlogin SO_ACCEPTCONN = 30, 822cde5492fSlogin 823cde5492fSlogin SO_PEERSEC = 31, 824cde5492fSlogin SO_PASSSEC = 34, 825cde5492fSlogin 826cde5492fSlogin SO_MARK = 36, 827cde5492fSlogin 828cde5492fSlogin SO_PROTOCOL = 38, 829cde5492fSlogin SO_DOMAIN = 39, 830cde5492fSlogin 831cde5492fSlogin SO_RXQ_OVFL = 40, 832cde5492fSlogin 833cde5492fSlogin /// 与SCM_WIFI_STATUS相同 834cde5492fSlogin SO_WIFI_STATUS = 41, 835cde5492fSlogin SO_PEEK_OFF = 42, 836cde5492fSlogin 837cde5492fSlogin /* Instruct lower device to use last 4-bytes of skb data as FCS */ 838cde5492fSlogin SO_NOFCS = 43, 839cde5492fSlogin 840cde5492fSlogin SO_LOCK_FILTER = 44, 841cde5492fSlogin SO_SELECT_ERR_QUEUE = 45, 842cde5492fSlogin SO_BUSY_POLL = 46, 843cde5492fSlogin SO_MAX_PACING_RATE = 47, 844cde5492fSlogin SO_BPF_EXTENSIONS = 48, 845cde5492fSlogin SO_INCOMING_CPU = 49, 846cde5492fSlogin SO_ATTACH_BPF = 50, 847cde5492fSlogin // SO_DETACH_BPF = SO_DETACH_FILTER, 848cde5492fSlogin SO_ATTACH_REUSEPORT_CBPF = 51, 849cde5492fSlogin SO_ATTACH_REUSEPORT_EBPF = 52, 850cde5492fSlogin 851cde5492fSlogin SO_CNX_ADVICE = 53, 852cde5492fSlogin SCM_TIMESTAMPING_OPT_STATS = 54, 853cde5492fSlogin SO_MEMINFO = 55, 854cde5492fSlogin SO_INCOMING_NAPI_ID = 56, 855cde5492fSlogin SO_COOKIE = 57, 856cde5492fSlogin SCM_TIMESTAMPING_PKTINFO = 58, 857cde5492fSlogin SO_PEERGROUPS = 59, 858cde5492fSlogin SO_ZEROCOPY = 60, 859cde5492fSlogin /// 与SCM_TXTIME相同 860cde5492fSlogin SO_TXTIME = 61, 861cde5492fSlogin 862cde5492fSlogin SO_BINDTOIFINDEX = 62, 863cde5492fSlogin 864cde5492fSlogin SO_TIMESTAMP_OLD = 29, 865cde5492fSlogin SO_TIMESTAMPNS_OLD = 35, 866cde5492fSlogin SO_TIMESTAMPING_OLD = 37, 867cde5492fSlogin SO_TIMESTAMP_NEW = 63, 868cde5492fSlogin SO_TIMESTAMPNS_NEW = 64, 869cde5492fSlogin SO_TIMESTAMPING_NEW = 65, 870cde5492fSlogin 871cde5492fSlogin SO_RCVTIMEO_NEW = 66, 872cde5492fSlogin SO_SNDTIMEO_NEW = 67, 873cde5492fSlogin 874cde5492fSlogin SO_DETACH_REUSEPORT_BPF = 68, 875cde5492fSlogin 876cde5492fSlogin SO_PREFER_BUSY_POLL = 69, 877cde5492fSlogin SO_BUSY_POLL_BUDGET = 70, 878cde5492fSlogin 879cde5492fSlogin SO_NETNS_COOKIE = 71, 880cde5492fSlogin SO_BUF_LOCK = 72, 881cde5492fSlogin SO_RESERVE_MEM = 73, 882cde5492fSlogin SO_TXREHASH = 74, 883cde5492fSlogin SO_RCVMARK = 75, 884cde5492fSlogin } 885cde5492fSlogin 886cde5492fSlogin impl TryFrom<i32> for PosixSocketOption { 887cde5492fSlogin type Error = SystemError; 888cde5492fSlogin 889cde5492fSlogin fn try_from(value: i32) -> Result<Self, Self::Error> { 890cde5492fSlogin match <Self as FromPrimitive>::from_i32(value) { 891cde5492fSlogin Some(p) => Ok(p), 892cde5492fSlogin None => Err(SystemError::EINVAL), 893cde5492fSlogin } 894cde5492fSlogin } 895cde5492fSlogin } 896cde5492fSlogin 897cde5492fSlogin impl Into<i32> for PosixSocketOption { 898cde5492fSlogin fn into(self) -> i32 { 899cde5492fSlogin <Self as ToPrimitive>::to_i32(&self).unwrap() 900cde5492fSlogin } 901cde5492fSlogin } 902cde5492fSlogin 903cde5492fSlogin #[derive(Debug, Clone, Copy, PartialEq, Eq, FromPrimitive, ToPrimitive)] 904cde5492fSlogin pub enum PosixTcpSocketOptions { 905cde5492fSlogin /// Turn off Nagle's algorithm. 906cde5492fSlogin NoDelay = 1, 907cde5492fSlogin /// Limit MSS. 908cde5492fSlogin MaxSegment = 2, 909cde5492fSlogin /// Never send partially complete segments. 910cde5492fSlogin Cork = 3, 911cde5492fSlogin /// Start keeplives after this period. 912cde5492fSlogin KeepIdle = 4, 913cde5492fSlogin /// Interval between keepalives. 914cde5492fSlogin KeepIntvl = 5, 915cde5492fSlogin /// Number of keepalives before death. 916cde5492fSlogin KeepCnt = 6, 917cde5492fSlogin /// Number of SYN retransmits. 918cde5492fSlogin Syncnt = 7, 919cde5492fSlogin /// Lifetime for orphaned FIN-WAIT-2 state. 920cde5492fSlogin Linger2 = 8, 921cde5492fSlogin /// Wake up listener only when data arrive. 922cde5492fSlogin DeferAccept = 9, 923cde5492fSlogin /// Bound advertised window 924cde5492fSlogin WindowClamp = 10, 925cde5492fSlogin /// Information about this connection. 926cde5492fSlogin Info = 11, 927cde5492fSlogin /// Block/reenable quick acks. 928cde5492fSlogin QuickAck = 12, 929cde5492fSlogin /// Congestion control algorithm. 930cde5492fSlogin Congestion = 13, 931cde5492fSlogin /// TCP MD5 Signature (RFC2385). 932cde5492fSlogin Md5Sig = 14, 933cde5492fSlogin /// Use linear timeouts for thin streams 934cde5492fSlogin ThinLinearTimeouts = 16, 935cde5492fSlogin /// Fast retrans. after 1 dupack. 936cde5492fSlogin ThinDupack = 17, 937cde5492fSlogin /// How long for loss retry before timeout. 938cde5492fSlogin UserTimeout = 18, 939cde5492fSlogin /// TCP sock is under repair right now. 940cde5492fSlogin Repair = 19, 941cde5492fSlogin RepairQueue = 20, 942cde5492fSlogin QueueSeq = 21, 943cde5492fSlogin RepairOptions = 22, 944cde5492fSlogin /// Enable FastOpen on listeners 945cde5492fSlogin FastOpen = 23, 946cde5492fSlogin Timestamp = 24, 947cde5492fSlogin /// Limit number of unsent bytes in write queue. 948cde5492fSlogin NotSentLowat = 25, 949cde5492fSlogin /// Get Congestion Control (optional) info. 950cde5492fSlogin CCInfo = 26, 951cde5492fSlogin /// Record SYN headers for new connections. 952cde5492fSlogin SaveSyn = 27, 953cde5492fSlogin /// Get SYN headers recorded for connection. 954cde5492fSlogin SavedSyn = 28, 955cde5492fSlogin /// Get/set window parameters. 956cde5492fSlogin RepairWindow = 29, 957cde5492fSlogin /// Attempt FastOpen with connect. 958cde5492fSlogin FastOpenConnect = 30, 959cde5492fSlogin /// Attach a ULP to a TCP connection. 960cde5492fSlogin ULP = 31, 961cde5492fSlogin /// TCP MD5 Signature with extensions. 962cde5492fSlogin Md5SigExt = 32, 963cde5492fSlogin /// Set the key for Fast Open(cookie). 964cde5492fSlogin FastOpenKey = 33, 965cde5492fSlogin /// Enable TFO without a TFO cookie. 966cde5492fSlogin FastOpenNoCookie = 34, 967cde5492fSlogin ZeroCopyReceive = 35, 968cde5492fSlogin /// Notify bytes available to read as a cmsg on read. 969cde5492fSlogin /// 与TCP_CM_INQ相同 970cde5492fSlogin INQ = 36, 971cde5492fSlogin /// delay outgoing packets by XX usec 972cde5492fSlogin TxDelay = 37, 973cde5492fSlogin } 974cde5492fSlogin 975cde5492fSlogin impl TryFrom<i32> for PosixTcpSocketOptions { 976cde5492fSlogin type Error = SystemError; 977cde5492fSlogin 978cde5492fSlogin fn try_from(value: i32) -> Result<Self, Self::Error> { 979cde5492fSlogin match <Self as FromPrimitive>::from_i32(value) { 980cde5492fSlogin Some(p) => Ok(p), 981cde5492fSlogin None => Err(SystemError::EINVAL), 982cde5492fSlogin } 983cde5492fSlogin } 984cde5492fSlogin } 985cde5492fSlogin 986cde5492fSlogin impl Into<i32> for PosixTcpSocketOptions { 987cde5492fSlogin fn into(self) -> i32 { 988cde5492fSlogin <Self as ToPrimitive>::to_i32(&self).unwrap() 989cde5492fSlogin } 990cde5492fSlogin } 991