1cde5492fSlogin use core::cmp::min; 2cde5492fSlogin 3cde5492fSlogin use alloc::{boxed::Box, sync::Arc}; 4cde5492fSlogin use num_traits::{FromPrimitive, ToPrimitive}; 5cde5492fSlogin use smoltcp::wire; 691e9d4abSLoGin use system_error::SystemError; 7cde5492fSlogin 8cde5492fSlogin use crate::{ 9cde5492fSlogin filesystem::vfs::{ 10cde5492fSlogin file::{File, FileMode}, 11cde5492fSlogin syscall::{IoVec, IoVecs}, 12cde5492fSlogin }, 13ab5c8ca4Slogin libs::spinlock::SpinLockGuard, 144fda81ceSLoGin mm::{verify_area, VirtAddr}, 15cde5492fSlogin net::socket::{AddressFamily, SOL_SOCKET}, 161496ba7bSLoGin process::ProcessManager, 1791e9d4abSLoGin syscall::Syscall, 18cde5492fSlogin }; 19cde5492fSlogin 20cde5492fSlogin use super::{ 21*4ad52e57S裕依2439 socket::{new_socket, PosixSocketType, Socket, SocketHandleItem, SocketInode, HANDLE_MAP}, 22*4ad52e57S裕依2439 Endpoint, Protocol, ShutdownType, 23cde5492fSlogin }; 24cde5492fSlogin 25c47fe904SLoGin /// Flags for socket, socketpair, accept4 26c47fe904SLoGin const SOCK_CLOEXEC: FileMode = FileMode::O_CLOEXEC; 27c47fe904SLoGin const SOCK_NONBLOCK: FileMode = FileMode::O_NONBLOCK; 28c47fe904SLoGin 29ab5c8ca4Slogin impl Syscall { 30cde5492fSlogin /// @brief sys_socket系统调用的实际执行函数 31cde5492fSlogin /// 32cde5492fSlogin /// @param address_family 地址族 33cde5492fSlogin /// @param socket_type socket类型 34cde5492fSlogin /// @param protocol 传输协议 35ab5c8ca4Slogin pub fn socket( 36cde5492fSlogin address_family: usize, 37cde5492fSlogin socket_type: usize, 38cde5492fSlogin protocol: usize, 39ab5c8ca4Slogin ) -> Result<usize, SystemError> { 40cde5492fSlogin let address_family = AddressFamily::try_from(address_family as u16)?; 41cde5492fSlogin let socket_type = PosixSocketType::try_from((socket_type & 0xf) as u8)?; 42*4ad52e57S裕依2439 let protocol = Protocol::from(protocol as u8); 43*4ad52e57S裕依2439 44*4ad52e57S裕依2439 let socket = new_socket(address_family, socket_type, protocol)?; 45*4ad52e57S裕依2439 4640609970SGnoCiYeH let handle_item = SocketHandleItem::new(&socket); 4740609970SGnoCiYeH HANDLE_MAP 4840609970SGnoCiYeH .write_irqsave() 4940609970SGnoCiYeH .insert(socket.socket_handle(), handle_item); 50*4ad52e57S裕依2439 51cde5492fSlogin let socketinode: Arc<SocketInode> = SocketInode::new(socket); 52cde5492fSlogin let f = File::new(socketinode, FileMode::O_RDWR)?; 53cde5492fSlogin // 把socket添加到当前进程的文件描述符表中 541496ba7bSLoGin let binding = ProcessManager::current_pcb().fd_table(); 551496ba7bSLoGin let mut fd_table_guard = binding.write(); 561496ba7bSLoGin let fd = fd_table_guard.alloc_fd(f, None).map(|x| x as usize); 571496ba7bSLoGin drop(fd_table_guard); 58cde5492fSlogin return fd; 59cde5492fSlogin } 60cde5492fSlogin 61*4ad52e57S裕依2439 /// # sys_socketpair系统调用的实际执行函数 62*4ad52e57S裕依2439 /// 63*4ad52e57S裕依2439 /// ## 参数 64*4ad52e57S裕依2439 /// - `address_family`: 地址族 65*4ad52e57S裕依2439 /// - `socket_type`: socket类型 66*4ad52e57S裕依2439 /// - `protocol`: 传输协议 67*4ad52e57S裕依2439 /// - `fds`: 用于返回文件描述符的数组 68*4ad52e57S裕依2439 pub fn socketpair( 69*4ad52e57S裕依2439 address_family: usize, 70*4ad52e57S裕依2439 socket_type: usize, 71*4ad52e57S裕依2439 protocol: usize, 72*4ad52e57S裕依2439 fds: &mut [i32], 73*4ad52e57S裕依2439 ) -> Result<usize, SystemError> { 74*4ad52e57S裕依2439 let address_family = AddressFamily::try_from(address_family as u16)?; 75*4ad52e57S裕依2439 let socket_type = PosixSocketType::try_from((socket_type & 0xf) as u8)?; 76*4ad52e57S裕依2439 let protocol = Protocol::from(protocol as u8); 77*4ad52e57S裕依2439 78*4ad52e57S裕依2439 let mut socket0 = new_socket(address_family, socket_type, protocol)?; 79*4ad52e57S裕依2439 let mut socket1 = new_socket(address_family, socket_type, protocol)?; 80*4ad52e57S裕依2439 81*4ad52e57S裕依2439 socket0 82*4ad52e57S裕依2439 .socketpair_ops() 83*4ad52e57S裕依2439 .unwrap() 84*4ad52e57S裕依2439 .socketpair(&mut socket0, &mut socket1); 85*4ad52e57S裕依2439 86*4ad52e57S裕依2439 let binding = ProcessManager::current_pcb().fd_table(); 87*4ad52e57S裕依2439 let mut fd_table_guard = binding.write(); 88*4ad52e57S裕依2439 89*4ad52e57S裕依2439 let mut alloc_fd = |socket: Box<dyn Socket>| -> Result<i32, SystemError> { 90*4ad52e57S裕依2439 let socketinode = SocketInode::new(socket); 91*4ad52e57S裕依2439 let file = File::new(socketinode, FileMode::O_RDWR)?; 92*4ad52e57S裕依2439 fd_table_guard.alloc_fd(file, None) 93*4ad52e57S裕依2439 }; 94*4ad52e57S裕依2439 95*4ad52e57S裕依2439 fds[0] = alloc_fd(socket0)?; 96*4ad52e57S裕依2439 fds[1] = alloc_fd(socket1)?; 97*4ad52e57S裕依2439 98*4ad52e57S裕依2439 drop(fd_table_guard); 99*4ad52e57S裕依2439 Ok(0) 100*4ad52e57S裕依2439 } 101*4ad52e57S裕依2439 102cde5492fSlogin /// @brief sys_setsockopt系统调用的实际执行函数 103cde5492fSlogin /// 104cde5492fSlogin /// @param fd 文件描述符 105cde5492fSlogin /// @param level 选项级别 106cde5492fSlogin /// @param optname 选项名称 107cde5492fSlogin /// @param optval 选项值 108cde5492fSlogin /// @param optlen optval缓冲区长度 109ab5c8ca4Slogin pub fn setsockopt( 110cde5492fSlogin fd: usize, 111cde5492fSlogin level: usize, 112cde5492fSlogin optname: usize, 113ab5c8ca4Slogin optval: &[u8], 114ab5c8ca4Slogin ) -> Result<usize, SystemError> { 1151496ba7bSLoGin let socket_inode: Arc<SocketInode> = ProcessManager::current_pcb() 116cde5492fSlogin .get_socket(fd as i32) 117cde5492fSlogin .ok_or(SystemError::EBADF)?; 118cde5492fSlogin // 获取内层的socket(真正的数据) 119ab5c8ca4Slogin let socket: SpinLockGuard<Box<dyn Socket>> = socket_inode.inner(); 120ab5c8ca4Slogin return socket.setsockopt(level, optname, optval).map(|_| 0); 121cde5492fSlogin } 122cde5492fSlogin 123cde5492fSlogin /// @brief sys_getsockopt系统调用的实际执行函数 124cde5492fSlogin /// 125cde5492fSlogin /// 参考:https://man7.org/linux/man-pages/man2/setsockopt.2.html 126cde5492fSlogin /// 127cde5492fSlogin /// @param fd 文件描述符 128cde5492fSlogin /// @param level 选项级别 129cde5492fSlogin /// @param optname 选项名称 130cde5492fSlogin /// @param optval 返回的选项值 131cde5492fSlogin /// @param optlen 返回的optval缓冲区长度 132ab5c8ca4Slogin pub fn getsockopt( 133cde5492fSlogin fd: usize, 134cde5492fSlogin level: usize, 135cde5492fSlogin optname: usize, 136cde5492fSlogin optval: *mut u8, 137cde5492fSlogin optlen: *mut u32, 138ab5c8ca4Slogin ) -> Result<usize, SystemError> { 139cde5492fSlogin // 获取socket 140cde5492fSlogin let optval = optval as *mut u32; 1411496ba7bSLoGin let binding: Arc<SocketInode> = ProcessManager::current_pcb() 142cde5492fSlogin .get_socket(fd as i32) 143cde5492fSlogin .ok_or(SystemError::EBADF)?; 144cde5492fSlogin let socket = binding.inner(); 145cde5492fSlogin 146cde5492fSlogin if level as u8 == SOL_SOCKET { 147ab5c8ca4Slogin let optname = PosixSocketOption::try_from(optname as i32) 148ab5c8ca4Slogin .map_err(|_| SystemError::ENOPROTOOPT)?; 149cde5492fSlogin match optname { 150cde5492fSlogin PosixSocketOption::SO_SNDBUF => { 151cde5492fSlogin // 返回发送缓冲区大小 152cde5492fSlogin unsafe { 153*4ad52e57S裕依2439 *optval = socket.metadata()?.tx_buf_size as u32; 154cde5492fSlogin *optlen = core::mem::size_of::<u32>() as u32; 155cde5492fSlogin } 156cde5492fSlogin return Ok(0); 157cde5492fSlogin } 158cde5492fSlogin PosixSocketOption::SO_RCVBUF => { 159cde5492fSlogin let optval = optval as *mut u32; 160cde5492fSlogin // 返回默认的接收缓冲区大小 161cde5492fSlogin unsafe { 162*4ad52e57S裕依2439 *optval = socket.metadata()?.rx_buf_size as u32; 163cde5492fSlogin *optlen = core::mem::size_of::<u32>() as u32; 164cde5492fSlogin } 165cde5492fSlogin return Ok(0); 166cde5492fSlogin } 167cde5492fSlogin _ => { 168cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 169cde5492fSlogin } 170cde5492fSlogin } 171cde5492fSlogin } 172cde5492fSlogin drop(socket); 173cde5492fSlogin 174cde5492fSlogin // To manipulate options at any other level the 175cde5492fSlogin // protocol number of the appropriate protocol controlling the 176cde5492fSlogin // option is supplied. For example, to indicate that an option is 177cde5492fSlogin // to be interpreted by the TCP protocol, level should be set to the 178cde5492fSlogin // protocol number of TCP. 179cde5492fSlogin 180cde5492fSlogin let posix_protocol = 181cde5492fSlogin PosixIpProtocol::try_from(level as u16).map_err(|_| SystemError::ENOPROTOOPT)?; 182cde5492fSlogin if posix_protocol == PosixIpProtocol::TCP { 183cde5492fSlogin let optname = PosixTcpSocketOptions::try_from(optname as i32) 184cde5492fSlogin .map_err(|_| SystemError::ENOPROTOOPT)?; 185cde5492fSlogin match optname { 186cde5492fSlogin PosixTcpSocketOptions::Congestion => return Ok(0), 187cde5492fSlogin _ => { 188cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 189cde5492fSlogin } 190cde5492fSlogin } 191cde5492fSlogin } 192cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 193cde5492fSlogin } 194cde5492fSlogin 195cde5492fSlogin /// @brief sys_connect系统调用的实际执行函数 196cde5492fSlogin /// 197cde5492fSlogin /// @param fd 文件描述符 198cde5492fSlogin /// @param addr SockAddr 199cde5492fSlogin /// @param addrlen 地址长度 200cde5492fSlogin /// 201cde5492fSlogin /// @return 成功返回0,失败返回错误码 202ab5c8ca4Slogin pub fn connect(fd: usize, addr: *const SockAddr, addrlen: usize) -> Result<usize, SystemError> { 203cde5492fSlogin let endpoint: Endpoint = SockAddr::to_endpoint(addr, addrlen)?; 2041496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 205cde5492fSlogin .get_socket(fd as i32) 206cde5492fSlogin .ok_or(SystemError::EBADF)?; 2072f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 208cde5492fSlogin // kdebug!("connect to {:?}...", endpoint); 209cde5492fSlogin socket.connect(endpoint)?; 210cde5492fSlogin return Ok(0); 211cde5492fSlogin } 212cde5492fSlogin 213cde5492fSlogin /// @brief sys_bind系统调用的实际执行函数 214cde5492fSlogin /// 215cde5492fSlogin /// @param fd 文件描述符 216cde5492fSlogin /// @param addr SockAddr 217cde5492fSlogin /// @param addrlen 地址长度 218cde5492fSlogin /// 219cde5492fSlogin /// @return 成功返回0,失败返回错误码 220ab5c8ca4Slogin pub fn bind(fd: usize, addr: *const SockAddr, addrlen: usize) -> Result<usize, SystemError> { 221cde5492fSlogin let endpoint: Endpoint = SockAddr::to_endpoint(addr, addrlen)?; 2221496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 223cde5492fSlogin .get_socket(fd as i32) 224cde5492fSlogin .ok_or(SystemError::EBADF)?; 2252f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 226cde5492fSlogin socket.bind(endpoint)?; 227cde5492fSlogin return Ok(0); 228cde5492fSlogin } 229cde5492fSlogin 230cde5492fSlogin /// @brief sys_sendto系统调用的实际执行函数 231cde5492fSlogin /// 232cde5492fSlogin /// @param fd 文件描述符 233cde5492fSlogin /// @param buf 发送缓冲区 234cde5492fSlogin /// @param flags 标志 235cde5492fSlogin /// @param addr SockAddr 236cde5492fSlogin /// @param addrlen 地址长度 237cde5492fSlogin /// 238cde5492fSlogin /// @return 成功返回发送的字节数,失败返回错误码 239ab5c8ca4Slogin pub fn sendto( 240cde5492fSlogin fd: usize, 241ab5c8ca4Slogin buf: &[u8], 242ab5c8ca4Slogin _flags: u32, 243cde5492fSlogin addr: *const SockAddr, 244cde5492fSlogin addrlen: usize, 245ab5c8ca4Slogin ) -> Result<usize, SystemError> { 246cde5492fSlogin let endpoint = if addr.is_null() { 247cde5492fSlogin None 248cde5492fSlogin } else { 249cde5492fSlogin Some(SockAddr::to_endpoint(addr, addrlen)?) 250cde5492fSlogin }; 251cde5492fSlogin 2521496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 253cde5492fSlogin .get_socket(fd as i32) 254cde5492fSlogin .ok_or(SystemError::EBADF)?; 2552f6f547aSGnoCiYeH let socket = unsafe { socket.inner_no_preempt() }; 256ab5c8ca4Slogin return socket.write(buf, endpoint); 257cde5492fSlogin } 258cde5492fSlogin 259cde5492fSlogin /// @brief sys_recvfrom系统调用的实际执行函数 260cde5492fSlogin /// 261cde5492fSlogin /// @param fd 文件描述符 262cde5492fSlogin /// @param buf 接收缓冲区 263cde5492fSlogin /// @param flags 标志 264cde5492fSlogin /// @param addr SockAddr 265cde5492fSlogin /// @param addrlen 地址长度 266cde5492fSlogin /// 267cde5492fSlogin /// @return 成功返回接收的字节数,失败返回错误码 268ab5c8ca4Slogin pub fn recvfrom( 269cde5492fSlogin fd: usize, 270ab5c8ca4Slogin buf: &mut [u8], 271ab5c8ca4Slogin _flags: u32, 272cde5492fSlogin addr: *mut SockAddr, 273cde5492fSlogin addrlen: *mut u32, 274ab5c8ca4Slogin ) -> Result<usize, SystemError> { 2751496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 276cde5492fSlogin .get_socket(fd as i32) 277cde5492fSlogin .ok_or(SystemError::EBADF)?; 27840609970SGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 279cde5492fSlogin 280cde5492fSlogin let (n, endpoint) = socket.read(buf); 281cde5492fSlogin drop(socket); 282cde5492fSlogin 283cde5492fSlogin let n: usize = n?; 284cde5492fSlogin 285cde5492fSlogin // 如果有地址信息,将地址信息写入用户空间 286cde5492fSlogin if !addr.is_null() { 287cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 288cde5492fSlogin unsafe { 289cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 290cde5492fSlogin } 291cde5492fSlogin } 292ab5c8ca4Slogin return Ok(n); 293cde5492fSlogin } 294cde5492fSlogin 295cde5492fSlogin /// @brief sys_recvmsg系统调用的实际执行函数 296cde5492fSlogin /// 297cde5492fSlogin /// @param fd 文件描述符 298cde5492fSlogin /// @param msg MsgHdr 299ab5c8ca4Slogin /// @param flags 标志,暂时未使用 300cde5492fSlogin /// 301cde5492fSlogin /// @return 成功返回接收的字节数,失败返回错误码 302ab5c8ca4Slogin pub fn recvmsg(fd: usize, msg: &mut MsgHdr, _flags: u32) -> Result<usize, SystemError> { 303cde5492fSlogin // 检查每个缓冲区地址是否合法,生成iovecs 304cde5492fSlogin let mut iovs = unsafe { IoVecs::from_user(msg.msg_iov, msg.msg_iovlen, true)? }; 305cde5492fSlogin 3061496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 307cde5492fSlogin .get_socket(fd as i32) 308cde5492fSlogin .ok_or(SystemError::EBADF)?; 30940609970SGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 310cde5492fSlogin 311cde5492fSlogin let mut buf = iovs.new_buf(true); 312cde5492fSlogin // 从socket中读取数据 313cde5492fSlogin let (n, endpoint) = socket.read(&mut buf); 314cde5492fSlogin drop(socket); 315cde5492fSlogin 316cde5492fSlogin let n: usize = n?; 317cde5492fSlogin 318cde5492fSlogin // 将数据写入用户空间的iovecs 319cde5492fSlogin iovs.scatter(&buf[..n]); 320cde5492fSlogin 321cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 322cde5492fSlogin unsafe { 323cde5492fSlogin sockaddr_in.write_to_user(msg.msg_name, &mut msg.msg_namelen)?; 324cde5492fSlogin } 325ab5c8ca4Slogin return Ok(n); 326cde5492fSlogin } 327cde5492fSlogin 328cde5492fSlogin /// @brief sys_listen系统调用的实际执行函数 329cde5492fSlogin /// 330cde5492fSlogin /// @param fd 文件描述符 331ab5c8ca4Slogin /// @param backlog 队列最大连接数 332cde5492fSlogin /// 333cde5492fSlogin /// @return 成功返回0,失败返回错误码 334ab5c8ca4Slogin pub fn listen(fd: usize, backlog: usize) -> Result<usize, SystemError> { 3351496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 336cde5492fSlogin .get_socket(fd as i32) 337cde5492fSlogin .ok_or(SystemError::EBADF)?; 3382f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 339cde5492fSlogin socket.listen(backlog)?; 340cde5492fSlogin return Ok(0); 341cde5492fSlogin } 342cde5492fSlogin 343cde5492fSlogin /// @brief sys_shutdown系统调用的实际执行函数 344cde5492fSlogin /// 345cde5492fSlogin /// @param fd 文件描述符 346cde5492fSlogin /// @param how 关闭方式 347cde5492fSlogin /// 348cde5492fSlogin /// @return 成功返回0,失败返回错误码 349ab5c8ca4Slogin pub fn shutdown(fd: usize, how: usize) -> Result<usize, SystemError> { 3501496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 351cde5492fSlogin .get_socket(fd as i32) 352cde5492fSlogin .ok_or(SystemError::EBADF)?; 35340609970SGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 35440609970SGnoCiYeH socket.shutdown(ShutdownType::from_bits_truncate(how as u8))?; 355cde5492fSlogin return Ok(0); 356cde5492fSlogin } 357cde5492fSlogin 358cde5492fSlogin /// @brief sys_accept系统调用的实际执行函数 359cde5492fSlogin /// 360cde5492fSlogin /// @param fd 文件描述符 361cde5492fSlogin /// @param addr SockAddr 362cde5492fSlogin /// @param addrlen 地址长度 363cde5492fSlogin /// 364cde5492fSlogin /// @return 成功返回新的文件描述符,失败返回错误码 365ab5c8ca4Slogin pub fn accept(fd: usize, addr: *mut SockAddr, addrlen: *mut u32) -> Result<usize, SystemError> { 366c47fe904SLoGin return Self::do_accept(fd, addr, addrlen, 0); 367c47fe904SLoGin } 368c47fe904SLoGin 369c47fe904SLoGin /// sys_accept4 - accept a connection on a socket 370c47fe904SLoGin /// 371c47fe904SLoGin /// 372c47fe904SLoGin /// If flags is 0, then accept4() is the same as accept(). The 373c47fe904SLoGin /// following values can be bitwise ORed in flags to obtain different 374c47fe904SLoGin /// behavior: 375c47fe904SLoGin /// 376c47fe904SLoGin /// - SOCK_NONBLOCK 377c47fe904SLoGin /// Set the O_NONBLOCK file status flag on the open file 378c47fe904SLoGin /// description (see open(2)) referred to by the new file 379c47fe904SLoGin /// descriptor. Using this flag saves extra calls to fcntl(2) 380c47fe904SLoGin /// to achieve the same result. 381c47fe904SLoGin /// 382c47fe904SLoGin /// - SOCK_CLOEXEC 383c47fe904SLoGin /// Set the close-on-exec (FD_CLOEXEC) flag on the new file 384c47fe904SLoGin /// descriptor. See the description of the O_CLOEXEC flag in 385c47fe904SLoGin /// open(2) for reasons why this may be useful. 386c47fe904SLoGin pub fn accept4( 387c47fe904SLoGin fd: usize, 388c47fe904SLoGin addr: *mut SockAddr, 389c47fe904SLoGin addrlen: *mut u32, 390c47fe904SLoGin mut flags: u32, 391c47fe904SLoGin ) -> Result<usize, SystemError> { 392c47fe904SLoGin // 如果flags不合法,返回错误 393c47fe904SLoGin if (flags & (!(SOCK_CLOEXEC | SOCK_NONBLOCK)).bits()) != 0 { 394c47fe904SLoGin return Err(SystemError::EINVAL); 395c47fe904SLoGin } 396c47fe904SLoGin 397c47fe904SLoGin if SOCK_NONBLOCK != FileMode::O_NONBLOCK && ((flags & SOCK_NONBLOCK.bits()) != 0) { 398*4ad52e57S裕依2439 flags = (flags & !FileMode::O_NONBLOCK.bits()) | FileMode::O_NONBLOCK.bits(); 399c47fe904SLoGin } 400c47fe904SLoGin 401c47fe904SLoGin return Self::do_accept(fd, addr, addrlen, flags); 402c47fe904SLoGin } 403c47fe904SLoGin 404c47fe904SLoGin fn do_accept( 405c47fe904SLoGin fd: usize, 406c47fe904SLoGin addr: *mut SockAddr, 407c47fe904SLoGin addrlen: *mut u32, 408c47fe904SLoGin flags: u32, 409c47fe904SLoGin ) -> Result<usize, SystemError> { 4101496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 411cde5492fSlogin .get_socket(fd as i32) 412cde5492fSlogin .ok_or(SystemError::EBADF)?; 413cde5492fSlogin // kdebug!("accept: socket={:?}", socket); 4142f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 415cde5492fSlogin // 从socket中接收连接 416cde5492fSlogin let (new_socket, remote_endpoint) = socket.accept()?; 417cde5492fSlogin drop(socket); 418cde5492fSlogin 419cde5492fSlogin // kdebug!("accept: new_socket={:?}", new_socket); 420cde5492fSlogin // Insert the new socket into the file descriptor vector 421cde5492fSlogin let new_socket: Arc<SocketInode> = SocketInode::new(new_socket); 422c47fe904SLoGin 423c47fe904SLoGin let mut file_mode = FileMode::O_RDWR; 424*4ad52e57S裕依2439 if flags & SOCK_NONBLOCK.bits() != 0 { 425c47fe904SLoGin file_mode |= FileMode::O_NONBLOCK; 426c47fe904SLoGin } 427*4ad52e57S裕依2439 if flags & SOCK_CLOEXEC.bits() != 0 { 428c47fe904SLoGin file_mode |= FileMode::O_CLOEXEC; 429c47fe904SLoGin } 430c47fe904SLoGin 4311496ba7bSLoGin let new_fd = ProcessManager::current_pcb() 4321496ba7bSLoGin .fd_table() 4331496ba7bSLoGin .write() 434c47fe904SLoGin .alloc_fd(File::new(new_socket, file_mode)?, None)?; 435cde5492fSlogin // kdebug!("accept: new_fd={}", new_fd); 436cde5492fSlogin if !addr.is_null() { 437cde5492fSlogin // kdebug!("accept: write remote_endpoint to user"); 438cde5492fSlogin // 将对端地址写入用户空间 439cde5492fSlogin let sockaddr_in = SockAddr::from(remote_endpoint); 440cde5492fSlogin unsafe { 441cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 442cde5492fSlogin } 443cde5492fSlogin } 444ab5c8ca4Slogin return Ok(new_fd as usize); 445cde5492fSlogin } 446cde5492fSlogin 447cde5492fSlogin /// @brief sys_getsockname系统调用的实际执行函数 448cde5492fSlogin /// 449cde5492fSlogin /// Returns the current address to which the socket 450cde5492fSlogin /// sockfd is bound, in the buffer pointed to by addr. 451cde5492fSlogin /// 452cde5492fSlogin /// @param fd 文件描述符 453cde5492fSlogin /// @param addr SockAddr 454cde5492fSlogin /// @param addrlen 地址长度 455cde5492fSlogin /// 456cde5492fSlogin /// @return 成功返回0,失败返回错误码 457ab5c8ca4Slogin pub fn getsockname( 458cde5492fSlogin fd: usize, 459cde5492fSlogin addr: *mut SockAddr, 460cde5492fSlogin addrlen: *mut u32, 461ab5c8ca4Slogin ) -> Result<usize, SystemError> { 462cde5492fSlogin if addr.is_null() { 463cde5492fSlogin return Err(SystemError::EINVAL); 464cde5492fSlogin } 4651496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 466cde5492fSlogin .get_socket(fd as i32) 467cde5492fSlogin .ok_or(SystemError::EBADF)?; 468cde5492fSlogin let socket = socket.inner(); 469cde5492fSlogin let endpoint: Endpoint = socket.endpoint().ok_or(SystemError::EINVAL)?; 470cde5492fSlogin drop(socket); 471cde5492fSlogin 472cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 473cde5492fSlogin unsafe { 474cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 475cde5492fSlogin } 476cde5492fSlogin return Ok(0); 477cde5492fSlogin } 478cde5492fSlogin 479cde5492fSlogin /// @brief sys_getpeername系统调用的实际执行函数 480cde5492fSlogin /// 481cde5492fSlogin /// @param fd 文件描述符 482cde5492fSlogin /// @param addr SockAddr 483cde5492fSlogin /// @param addrlen 地址长度 484cde5492fSlogin /// 485cde5492fSlogin /// @return 成功返回0,失败返回错误码 486ab5c8ca4Slogin pub fn getpeername( 487cde5492fSlogin fd: usize, 488cde5492fSlogin addr: *mut SockAddr, 489cde5492fSlogin addrlen: *mut u32, 490ab5c8ca4Slogin ) -> Result<usize, SystemError> { 491cde5492fSlogin if addr.is_null() { 492cde5492fSlogin return Err(SystemError::EINVAL); 493cde5492fSlogin } 494cde5492fSlogin 4951496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 496cde5492fSlogin .get_socket(fd as i32) 497cde5492fSlogin .ok_or(SystemError::EBADF)?; 498cde5492fSlogin let socket = socket.inner(); 499cde5492fSlogin let endpoint: Endpoint = socket.peer_endpoint().ok_or(SystemError::EINVAL)?; 500cde5492fSlogin drop(socket); 501cde5492fSlogin 502cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 503cde5492fSlogin unsafe { 504cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 505cde5492fSlogin } 506cde5492fSlogin return Ok(0); 507cde5492fSlogin } 508ab5c8ca4Slogin } 509cde5492fSlogin 510cde5492fSlogin // 参考资料: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/netinet_in.h.html#tag_13_32 511cde5492fSlogin #[repr(C)] 512cde5492fSlogin #[derive(Debug, Clone, Copy)] 513cde5492fSlogin pub struct SockAddrIn { 514cde5492fSlogin pub sin_family: u16, 515cde5492fSlogin pub sin_port: u16, 516cde5492fSlogin pub sin_addr: u32, 517cde5492fSlogin pub sin_zero: [u8; 8], 518cde5492fSlogin } 519cde5492fSlogin 520cde5492fSlogin #[repr(C)] 521cde5492fSlogin #[derive(Debug, Clone, Copy)] 522cde5492fSlogin pub struct SockAddrUn { 523cde5492fSlogin pub sun_family: u16, 524cde5492fSlogin pub sun_path: [u8; 108], 525cde5492fSlogin } 526cde5492fSlogin 527cde5492fSlogin #[repr(C)] 528cde5492fSlogin #[derive(Debug, Clone, Copy)] 529cde5492fSlogin pub struct SockAddrLl { 530cde5492fSlogin pub sll_family: u16, 531cde5492fSlogin pub sll_protocol: u16, 532cde5492fSlogin pub sll_ifindex: u32, 533cde5492fSlogin pub sll_hatype: u16, 534cde5492fSlogin pub sll_pkttype: u8, 535cde5492fSlogin pub sll_halen: u8, 536cde5492fSlogin pub sll_addr: [u8; 8], 537cde5492fSlogin } 538cde5492fSlogin 539cde5492fSlogin #[repr(C)] 540cde5492fSlogin #[derive(Debug, Clone, Copy)] 541cde5492fSlogin pub struct SockAddrNl { 542cde5492fSlogin nl_family: u16, 543cde5492fSlogin nl_pad: u16, 544cde5492fSlogin nl_pid: u32, 545cde5492fSlogin nl_groups: u32, 546cde5492fSlogin } 547cde5492fSlogin 548cde5492fSlogin #[repr(C)] 549cde5492fSlogin #[derive(Debug, Clone, Copy)] 550cde5492fSlogin pub struct SockAddrPlaceholder { 551cde5492fSlogin pub family: u16, 552cde5492fSlogin pub data: [u8; 14], 553cde5492fSlogin } 554cde5492fSlogin 555cde5492fSlogin #[repr(C)] 556cde5492fSlogin #[derive(Clone, Copy)] 557cde5492fSlogin pub union SockAddr { 558cde5492fSlogin pub family: u16, 559cde5492fSlogin pub addr_in: SockAddrIn, 560cde5492fSlogin pub addr_un: SockAddrUn, 561cde5492fSlogin pub addr_ll: SockAddrLl, 562cde5492fSlogin pub addr_nl: SockAddrNl, 563cde5492fSlogin pub addr_ph: SockAddrPlaceholder, 564cde5492fSlogin } 565cde5492fSlogin 566cde5492fSlogin impl SockAddr { 567cde5492fSlogin /// @brief 把用户传入的SockAddr转换为Endpoint结构体 568cde5492fSlogin pub fn to_endpoint(addr: *const SockAddr, len: usize) -> Result<Endpoint, SystemError> { 569cde5492fSlogin verify_area( 5704fda81ceSLoGin VirtAddr::new(addr as usize), 5714fda81ceSLoGin core::mem::size_of::<SockAddr>(), 572cde5492fSlogin ) 5734fda81ceSLoGin .map_err(|_| SystemError::EFAULT)?; 574cde5492fSlogin 575cde5492fSlogin let addr = unsafe { addr.as_ref() }.ok_or(SystemError::EFAULT)?; 576cde5492fSlogin if len < addr.len()? { 577cde5492fSlogin return Err(SystemError::EINVAL); 578cde5492fSlogin } 579cde5492fSlogin unsafe { 580cde5492fSlogin match AddressFamily::try_from(addr.family)? { 581cde5492fSlogin AddressFamily::INet => { 582cde5492fSlogin let addr_in: SockAddrIn = addr.addr_in; 583cde5492fSlogin 584cde5492fSlogin let ip: wire::IpAddress = wire::IpAddress::from(wire::Ipv4Address::from_bytes( 585cde5492fSlogin &u32::from_be(addr_in.sin_addr).to_be_bytes()[..], 586cde5492fSlogin )); 587cde5492fSlogin let port = u16::from_be(addr_in.sin_port); 588cde5492fSlogin 589cde5492fSlogin return Ok(Endpoint::Ip(Some(wire::IpEndpoint::new(ip, port)))); 590cde5492fSlogin } 591cde5492fSlogin AddressFamily::Packet => { 592cde5492fSlogin // TODO: support packet socket 593cde5492fSlogin return Err(SystemError::EINVAL); 594cde5492fSlogin } 595cde5492fSlogin AddressFamily::Netlink => { 596cde5492fSlogin // TODO: support netlink socket 597cde5492fSlogin return Err(SystemError::EINVAL); 598cde5492fSlogin } 599cde5492fSlogin AddressFamily::Unix => { 600cde5492fSlogin return Err(SystemError::EINVAL); 601cde5492fSlogin } 602cde5492fSlogin _ => { 603cde5492fSlogin return Err(SystemError::EINVAL); 604cde5492fSlogin } 605cde5492fSlogin } 606cde5492fSlogin } 607cde5492fSlogin } 608cde5492fSlogin 609cde5492fSlogin /// @brief 获取地址长度 610cde5492fSlogin pub fn len(&self) -> Result<usize, SystemError> { 611cde5492fSlogin let ret = match AddressFamily::try_from(unsafe { self.family })? { 612cde5492fSlogin AddressFamily::INet => Ok(core::mem::size_of::<SockAddrIn>()), 613cde5492fSlogin AddressFamily::Packet => Ok(core::mem::size_of::<SockAddrLl>()), 614cde5492fSlogin AddressFamily::Netlink => Ok(core::mem::size_of::<SockAddrNl>()), 615cde5492fSlogin AddressFamily::Unix => Err(SystemError::EINVAL), 616cde5492fSlogin _ => Err(SystemError::EINVAL), 617cde5492fSlogin }; 618cde5492fSlogin 619cde5492fSlogin return ret; 620cde5492fSlogin } 621cde5492fSlogin 622cde5492fSlogin /// @brief 把SockAddr的数据写入用户空间 623cde5492fSlogin /// 624cde5492fSlogin /// @param addr 用户空间的SockAddr的地址 625cde5492fSlogin /// @param len 要写入的长度 626cde5492fSlogin /// 627cde5492fSlogin /// @return 成功返回写入的长度,失败返回错误码 628cde5492fSlogin pub unsafe fn write_to_user( 629cde5492fSlogin &self, 630cde5492fSlogin addr: *mut SockAddr, 631cde5492fSlogin addr_len: *mut u32, 632cde5492fSlogin ) -> Result<usize, SystemError> { 633cde5492fSlogin // 当用户传入的地址或者长度为空时,直接返回0 634cde5492fSlogin if addr.is_null() || addr_len.is_null() { 635cde5492fSlogin return Ok(0); 636cde5492fSlogin } 6374fda81ceSLoGin 638cde5492fSlogin // 检查用户传入的地址是否合法 6394fda81ceSLoGin verify_area( 6404fda81ceSLoGin VirtAddr::new(addr as usize), 6414fda81ceSLoGin core::mem::size_of::<SockAddr>(), 6424fda81ceSLoGin ) 6434fda81ceSLoGin .map_err(|_| SystemError::EFAULT)?; 6444fda81ceSLoGin 6454fda81ceSLoGin verify_area( 6464fda81ceSLoGin VirtAddr::new(addr_len as usize), 6474fda81ceSLoGin core::mem::size_of::<u32>(), 6484fda81ceSLoGin ) 6494fda81ceSLoGin .map_err(|_| SystemError::EFAULT)?; 650cde5492fSlogin 651cde5492fSlogin let to_write = min(self.len()?, *addr_len as usize); 652cde5492fSlogin if to_write > 0 { 653cde5492fSlogin let buf = core::slice::from_raw_parts_mut(addr as *mut u8, to_write); 654cde5492fSlogin buf.copy_from_slice(core::slice::from_raw_parts( 655cde5492fSlogin self as *const SockAddr as *const u8, 656cde5492fSlogin to_write, 657cde5492fSlogin )); 658cde5492fSlogin } 659cde5492fSlogin *addr_len = self.len()? as u32; 660cde5492fSlogin return Ok(to_write); 661cde5492fSlogin } 662cde5492fSlogin } 663cde5492fSlogin 664cde5492fSlogin impl From<Endpoint> for SockAddr { 665cde5492fSlogin fn from(value: Endpoint) -> Self { 666cde5492fSlogin match value { 667cde5492fSlogin Endpoint::Ip(ip_endpoint) => { 668cde5492fSlogin // 未指定地址 669cde5492fSlogin if let None = ip_endpoint { 670cde5492fSlogin return SockAddr { 671cde5492fSlogin addr_ph: SockAddrPlaceholder { 672cde5492fSlogin family: AddressFamily::Unspecified as u16, 673cde5492fSlogin data: [0; 14], 674cde5492fSlogin }, 675cde5492fSlogin }; 676cde5492fSlogin } 677cde5492fSlogin // 指定了地址 678cde5492fSlogin let ip_endpoint = ip_endpoint.unwrap(); 679cde5492fSlogin match ip_endpoint.addr { 680cde5492fSlogin wire::IpAddress::Ipv4(ipv4_addr) => { 681cde5492fSlogin let addr_in = SockAddrIn { 682cde5492fSlogin sin_family: AddressFamily::INet as u16, 683cde5492fSlogin sin_port: ip_endpoint.port.to_be(), 684cde5492fSlogin sin_addr: u32::from_be_bytes(ipv4_addr.0).to_be(), 685cde5492fSlogin sin_zero: [0; 8], 686cde5492fSlogin }; 687cde5492fSlogin 688cde5492fSlogin return SockAddr { addr_in }; 689cde5492fSlogin } 690cde5492fSlogin _ => { 691cde5492fSlogin unimplemented!("not support ipv6"); 692cde5492fSlogin } 693cde5492fSlogin } 694cde5492fSlogin } 695cde5492fSlogin 696cde5492fSlogin Endpoint::LinkLayer(link_endpoint) => { 697cde5492fSlogin let addr_ll = SockAddrLl { 698cde5492fSlogin sll_family: AddressFamily::Packet as u16, 699cde5492fSlogin sll_protocol: 0, 700cde5492fSlogin sll_ifindex: link_endpoint.interface as u32, 701cde5492fSlogin sll_hatype: 0, 702cde5492fSlogin sll_pkttype: 0, 703cde5492fSlogin sll_halen: 0, 704cde5492fSlogin sll_addr: [0; 8], 705cde5492fSlogin }; 706cde5492fSlogin 707cde5492fSlogin return SockAddr { addr_ll }; 708*4ad52e57S裕依2439 } 709*4ad52e57S裕依2439 _ => { 710*4ad52e57S裕依2439 // todo: support other endpoint, like Netlink... 711*4ad52e57S裕依2439 unimplemented!("not support {value:?}"); 712*4ad52e57S裕依2439 } 713cde5492fSlogin } 714cde5492fSlogin } 715cde5492fSlogin } 716cde5492fSlogin 717cde5492fSlogin #[repr(C)] 718cde5492fSlogin #[derive(Debug, Clone, Copy)] 719cde5492fSlogin pub struct MsgHdr { 720cde5492fSlogin /// 指向一个SockAddr结构体的指针 721cde5492fSlogin pub msg_name: *mut SockAddr, 722cde5492fSlogin /// SockAddr结构体的大小 723cde5492fSlogin pub msg_namelen: u32, 724cde5492fSlogin /// scatter/gather array 725cde5492fSlogin pub msg_iov: *mut IoVec, 726cde5492fSlogin /// elements in msg_iov 727cde5492fSlogin pub msg_iovlen: usize, 728cde5492fSlogin /// 辅助数据 729cde5492fSlogin pub msg_control: *mut u8, 730cde5492fSlogin /// 辅助数据长度 731cde5492fSlogin pub msg_controllen: usize, 732cde5492fSlogin /// 接收到的消息的标志 733cde5492fSlogin pub msg_flags: u32, 734cde5492fSlogin } 735cde5492fSlogin 736cde5492fSlogin #[derive(Debug, Clone, Copy, FromPrimitive, ToPrimitive, PartialEq, Eq)] 737cde5492fSlogin pub enum PosixIpProtocol { 738cde5492fSlogin /// Dummy protocol for TCP. 739cde5492fSlogin IP = 0, 740cde5492fSlogin /// Internet Control Message Protocol. 741cde5492fSlogin ICMP = 1, 742cde5492fSlogin /// Internet Group Management Protocol. 743cde5492fSlogin IGMP = 2, 744cde5492fSlogin /// IPIP tunnels (older KA9Q tunnels use 94). 745cde5492fSlogin IPIP = 4, 746cde5492fSlogin /// Transmission Control Protocol. 747cde5492fSlogin TCP = 6, 748cde5492fSlogin /// Exterior Gateway Protocol. 749cde5492fSlogin EGP = 8, 750cde5492fSlogin /// PUP protocol. 751cde5492fSlogin PUP = 12, 752cde5492fSlogin /// User Datagram Protocol. 753cde5492fSlogin UDP = 17, 754cde5492fSlogin /// XNS IDP protocol. 755cde5492fSlogin IDP = 22, 756cde5492fSlogin /// SO Transport Protocol Class 4. 757cde5492fSlogin TP = 29, 758cde5492fSlogin /// Datagram Congestion Control Protocol. 759cde5492fSlogin DCCP = 33, 760cde5492fSlogin /// IPv6-in-IPv4 tunnelling. 761cde5492fSlogin IPv6 = 41, 762cde5492fSlogin /// RSVP Protocol. 763cde5492fSlogin RSVP = 46, 764cde5492fSlogin /// Generic Routing Encapsulation. (Cisco GRE) (rfc 1701, 1702) 765cde5492fSlogin GRE = 47, 766cde5492fSlogin /// Encapsulation Security Payload protocol 767cde5492fSlogin ESP = 50, 768cde5492fSlogin /// Authentication Header protocol 769cde5492fSlogin AH = 51, 770cde5492fSlogin /// Multicast Transport Protocol. 771cde5492fSlogin MTP = 92, 772cde5492fSlogin /// IP option pseudo header for BEET 773cde5492fSlogin BEETPH = 94, 774cde5492fSlogin /// Encapsulation Header. 775cde5492fSlogin ENCAP = 98, 776cde5492fSlogin /// Protocol Independent Multicast. 777cde5492fSlogin PIM = 103, 778cde5492fSlogin /// Compression Header Protocol. 779cde5492fSlogin COMP = 108, 780cde5492fSlogin /// Stream Control Transport Protocol 781cde5492fSlogin SCTP = 132, 782cde5492fSlogin /// UDP-Lite protocol (RFC 3828) 783cde5492fSlogin UDPLITE = 136, 784cde5492fSlogin /// MPLS in IP (RFC 4023) 785cde5492fSlogin MPLSINIP = 137, 786cde5492fSlogin /// Ethernet-within-IPv6 Encapsulation 787cde5492fSlogin ETHERNET = 143, 788cde5492fSlogin /// Raw IP packets 789cde5492fSlogin RAW = 255, 790cde5492fSlogin /// Multipath TCP connection 791cde5492fSlogin MPTCP = 262, 792cde5492fSlogin } 793cde5492fSlogin 794cde5492fSlogin impl TryFrom<u16> for PosixIpProtocol { 795cde5492fSlogin type Error = SystemError; 796cde5492fSlogin 797cde5492fSlogin fn try_from(value: u16) -> Result<Self, Self::Error> { 798cde5492fSlogin match <Self as FromPrimitive>::from_u16(value) { 799cde5492fSlogin Some(p) => Ok(p), 800cde5492fSlogin None => Err(SystemError::EPROTONOSUPPORT), 801cde5492fSlogin } 802cde5492fSlogin } 803cde5492fSlogin } 804cde5492fSlogin 805cde5492fSlogin impl Into<u16> for PosixIpProtocol { 806cde5492fSlogin fn into(self) -> u16 { 807cde5492fSlogin <Self as ToPrimitive>::to_u16(&self).unwrap() 808cde5492fSlogin } 809cde5492fSlogin } 810cde5492fSlogin 811cde5492fSlogin #[allow(non_camel_case_types)] 812cde5492fSlogin #[derive(Debug, Clone, Copy, FromPrimitive, ToPrimitive, PartialEq, Eq)] 813cde5492fSlogin pub enum PosixSocketOption { 814cde5492fSlogin SO_DEBUG = 1, 815cde5492fSlogin SO_REUSEADDR = 2, 816cde5492fSlogin SO_TYPE = 3, 817cde5492fSlogin SO_ERROR = 4, 818cde5492fSlogin SO_DONTROUTE = 5, 819cde5492fSlogin SO_BROADCAST = 6, 820cde5492fSlogin SO_SNDBUF = 7, 821cde5492fSlogin SO_RCVBUF = 8, 822cde5492fSlogin SO_SNDBUFFORCE = 32, 823cde5492fSlogin SO_RCVBUFFORCE = 33, 824cde5492fSlogin SO_KEEPALIVE = 9, 825cde5492fSlogin SO_OOBINLINE = 10, 826cde5492fSlogin SO_NO_CHECK = 11, 827cde5492fSlogin SO_PRIORITY = 12, 828cde5492fSlogin SO_LINGER = 13, 829cde5492fSlogin SO_BSDCOMPAT = 14, 830cde5492fSlogin SO_REUSEPORT = 15, 831cde5492fSlogin SO_PASSCRED = 16, 832cde5492fSlogin SO_PEERCRED = 17, 833cde5492fSlogin SO_RCVLOWAT = 18, 834cde5492fSlogin SO_SNDLOWAT = 19, 835cde5492fSlogin SO_RCVTIMEO_OLD = 20, 836cde5492fSlogin SO_SNDTIMEO_OLD = 21, 837cde5492fSlogin 838cde5492fSlogin SO_SECURITY_AUTHENTICATION = 22, 839cde5492fSlogin SO_SECURITY_ENCRYPTION_TRANSPORT = 23, 840cde5492fSlogin SO_SECURITY_ENCRYPTION_NETWORK = 24, 841cde5492fSlogin 842cde5492fSlogin SO_BINDTODEVICE = 25, 843cde5492fSlogin 844cde5492fSlogin /// 与SO_GET_FILTER相同 845cde5492fSlogin SO_ATTACH_FILTER = 26, 846cde5492fSlogin SO_DETACH_FILTER = 27, 847cde5492fSlogin 848cde5492fSlogin SO_PEERNAME = 28, 849cde5492fSlogin 850cde5492fSlogin SO_ACCEPTCONN = 30, 851cde5492fSlogin 852cde5492fSlogin SO_PEERSEC = 31, 853cde5492fSlogin SO_PASSSEC = 34, 854cde5492fSlogin 855cde5492fSlogin SO_MARK = 36, 856cde5492fSlogin 857cde5492fSlogin SO_PROTOCOL = 38, 858cde5492fSlogin SO_DOMAIN = 39, 859cde5492fSlogin 860cde5492fSlogin SO_RXQ_OVFL = 40, 861cde5492fSlogin 862cde5492fSlogin /// 与SCM_WIFI_STATUS相同 863cde5492fSlogin SO_WIFI_STATUS = 41, 864cde5492fSlogin SO_PEEK_OFF = 42, 865cde5492fSlogin 866cde5492fSlogin /* Instruct lower device to use last 4-bytes of skb data as FCS */ 867cde5492fSlogin SO_NOFCS = 43, 868cde5492fSlogin 869cde5492fSlogin SO_LOCK_FILTER = 44, 870cde5492fSlogin SO_SELECT_ERR_QUEUE = 45, 871cde5492fSlogin SO_BUSY_POLL = 46, 872cde5492fSlogin SO_MAX_PACING_RATE = 47, 873cde5492fSlogin SO_BPF_EXTENSIONS = 48, 874cde5492fSlogin SO_INCOMING_CPU = 49, 875cde5492fSlogin SO_ATTACH_BPF = 50, 876cde5492fSlogin // SO_DETACH_BPF = SO_DETACH_FILTER, 877cde5492fSlogin SO_ATTACH_REUSEPORT_CBPF = 51, 878cde5492fSlogin SO_ATTACH_REUSEPORT_EBPF = 52, 879cde5492fSlogin 880cde5492fSlogin SO_CNX_ADVICE = 53, 881cde5492fSlogin SCM_TIMESTAMPING_OPT_STATS = 54, 882cde5492fSlogin SO_MEMINFO = 55, 883cde5492fSlogin SO_INCOMING_NAPI_ID = 56, 884cde5492fSlogin SO_COOKIE = 57, 885cde5492fSlogin SCM_TIMESTAMPING_PKTINFO = 58, 886cde5492fSlogin SO_PEERGROUPS = 59, 887cde5492fSlogin SO_ZEROCOPY = 60, 888cde5492fSlogin /// 与SCM_TXTIME相同 889cde5492fSlogin SO_TXTIME = 61, 890cde5492fSlogin 891cde5492fSlogin SO_BINDTOIFINDEX = 62, 892cde5492fSlogin 893cde5492fSlogin SO_TIMESTAMP_OLD = 29, 894cde5492fSlogin SO_TIMESTAMPNS_OLD = 35, 895cde5492fSlogin SO_TIMESTAMPING_OLD = 37, 896cde5492fSlogin SO_TIMESTAMP_NEW = 63, 897cde5492fSlogin SO_TIMESTAMPNS_NEW = 64, 898cde5492fSlogin SO_TIMESTAMPING_NEW = 65, 899cde5492fSlogin 900cde5492fSlogin SO_RCVTIMEO_NEW = 66, 901cde5492fSlogin SO_SNDTIMEO_NEW = 67, 902cde5492fSlogin 903cde5492fSlogin SO_DETACH_REUSEPORT_BPF = 68, 904cde5492fSlogin 905cde5492fSlogin SO_PREFER_BUSY_POLL = 69, 906cde5492fSlogin SO_BUSY_POLL_BUDGET = 70, 907cde5492fSlogin 908cde5492fSlogin SO_NETNS_COOKIE = 71, 909cde5492fSlogin SO_BUF_LOCK = 72, 910cde5492fSlogin SO_RESERVE_MEM = 73, 911cde5492fSlogin SO_TXREHASH = 74, 912cde5492fSlogin SO_RCVMARK = 75, 913cde5492fSlogin } 914cde5492fSlogin 915cde5492fSlogin impl TryFrom<i32> for PosixSocketOption { 916cde5492fSlogin type Error = SystemError; 917cde5492fSlogin 918cde5492fSlogin fn try_from(value: i32) -> Result<Self, Self::Error> { 919cde5492fSlogin match <Self as FromPrimitive>::from_i32(value) { 920cde5492fSlogin Some(p) => Ok(p), 921cde5492fSlogin None => Err(SystemError::EINVAL), 922cde5492fSlogin } 923cde5492fSlogin } 924cde5492fSlogin } 925cde5492fSlogin 926cde5492fSlogin impl Into<i32> for PosixSocketOption { 927cde5492fSlogin fn into(self) -> i32 { 928cde5492fSlogin <Self as ToPrimitive>::to_i32(&self).unwrap() 929cde5492fSlogin } 930cde5492fSlogin } 931cde5492fSlogin 932cde5492fSlogin #[derive(Debug, Clone, Copy, PartialEq, Eq, FromPrimitive, ToPrimitive)] 933cde5492fSlogin pub enum PosixTcpSocketOptions { 934cde5492fSlogin /// Turn off Nagle's algorithm. 935cde5492fSlogin NoDelay = 1, 936cde5492fSlogin /// Limit MSS. 937cde5492fSlogin MaxSegment = 2, 938cde5492fSlogin /// Never send partially complete segments. 939cde5492fSlogin Cork = 3, 940cde5492fSlogin /// Start keeplives after this period. 941cde5492fSlogin KeepIdle = 4, 942cde5492fSlogin /// Interval between keepalives. 943cde5492fSlogin KeepIntvl = 5, 944cde5492fSlogin /// Number of keepalives before death. 945cde5492fSlogin KeepCnt = 6, 946cde5492fSlogin /// Number of SYN retransmits. 947cde5492fSlogin Syncnt = 7, 948cde5492fSlogin /// Lifetime for orphaned FIN-WAIT-2 state. 949cde5492fSlogin Linger2 = 8, 950cde5492fSlogin /// Wake up listener only when data arrive. 951cde5492fSlogin DeferAccept = 9, 952cde5492fSlogin /// Bound advertised window 953cde5492fSlogin WindowClamp = 10, 954cde5492fSlogin /// Information about this connection. 955cde5492fSlogin Info = 11, 956cde5492fSlogin /// Block/reenable quick acks. 957cde5492fSlogin QuickAck = 12, 958cde5492fSlogin /// Congestion control algorithm. 959cde5492fSlogin Congestion = 13, 960cde5492fSlogin /// TCP MD5 Signature (RFC2385). 961cde5492fSlogin Md5Sig = 14, 962cde5492fSlogin /// Use linear timeouts for thin streams 963cde5492fSlogin ThinLinearTimeouts = 16, 964cde5492fSlogin /// Fast retrans. after 1 dupack. 965cde5492fSlogin ThinDupack = 17, 966cde5492fSlogin /// How long for loss retry before timeout. 967cde5492fSlogin UserTimeout = 18, 968cde5492fSlogin /// TCP sock is under repair right now. 969cde5492fSlogin Repair = 19, 970cde5492fSlogin RepairQueue = 20, 971cde5492fSlogin QueueSeq = 21, 972cde5492fSlogin RepairOptions = 22, 973cde5492fSlogin /// Enable FastOpen on listeners 974cde5492fSlogin FastOpen = 23, 975cde5492fSlogin Timestamp = 24, 976cde5492fSlogin /// Limit number of unsent bytes in write queue. 977cde5492fSlogin NotSentLowat = 25, 978cde5492fSlogin /// Get Congestion Control (optional) info. 979cde5492fSlogin CCInfo = 26, 980cde5492fSlogin /// Record SYN headers for new connections. 981cde5492fSlogin SaveSyn = 27, 982cde5492fSlogin /// Get SYN headers recorded for connection. 983cde5492fSlogin SavedSyn = 28, 984cde5492fSlogin /// Get/set window parameters. 985cde5492fSlogin RepairWindow = 29, 986cde5492fSlogin /// Attempt FastOpen with connect. 987cde5492fSlogin FastOpenConnect = 30, 988cde5492fSlogin /// Attach a ULP to a TCP connection. 989cde5492fSlogin ULP = 31, 990cde5492fSlogin /// TCP MD5 Signature with extensions. 991cde5492fSlogin Md5SigExt = 32, 992cde5492fSlogin /// Set the key for Fast Open(cookie). 993cde5492fSlogin FastOpenKey = 33, 994cde5492fSlogin /// Enable TFO without a TFO cookie. 995cde5492fSlogin FastOpenNoCookie = 34, 996cde5492fSlogin ZeroCopyReceive = 35, 997cde5492fSlogin /// Notify bytes available to read as a cmsg on read. 998cde5492fSlogin /// 与TCP_CM_INQ相同 999cde5492fSlogin INQ = 36, 1000cde5492fSlogin /// delay outgoing packets by XX usec 1001cde5492fSlogin TxDelay = 37, 1002cde5492fSlogin } 1003cde5492fSlogin 1004cde5492fSlogin impl TryFrom<i32> for PosixTcpSocketOptions { 1005cde5492fSlogin type Error = SystemError; 1006cde5492fSlogin 1007cde5492fSlogin fn try_from(value: i32) -> Result<Self, Self::Error> { 1008cde5492fSlogin match <Self as FromPrimitive>::from_i32(value) { 1009cde5492fSlogin Some(p) => Ok(p), 1010cde5492fSlogin None => Err(SystemError::EINVAL), 1011cde5492fSlogin } 1012cde5492fSlogin } 1013cde5492fSlogin } 1014cde5492fSlogin 1015cde5492fSlogin impl Into<i32> for PosixTcpSocketOptions { 1016cde5492fSlogin fn into(self) -> i32 { 1017cde5492fSlogin <Self as ToPrimitive>::to_i32(&self).unwrap() 1018cde5492fSlogin } 1019cde5492fSlogin } 1020