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::{ 214ad52e57S裕依2439 socket::{new_socket, PosixSocketType, Socket, SocketHandleItem, SocketInode, HANDLE_MAP}, 224ad52e57S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)?; 424ad52e57S裕依2439 let protocol = Protocol::from(protocol as u8); 434ad52e57S裕依2439 444ad52e57S裕依2439 let socket = new_socket(address_family, socket_type, protocol)?; 454ad52e57S裕依2439 46*b5b571e0SLoGin let handle_item = SocketHandleItem::new(socket.as_ref()); 4740609970SGnoCiYeH HANDLE_MAP 4840609970SGnoCiYeH .write_irqsave() 4940609970SGnoCiYeH .insert(socket.socket_handle(), handle_item); 504ad52e57S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 614ad52e57S裕依2439 /// # sys_socketpair系统调用的实际执行函数 624ad52e57S裕依2439 /// 634ad52e57S裕依2439 /// ## 参数 644ad52e57S裕依2439 /// - `address_family`: 地址族 654ad52e57S裕依2439 /// - `socket_type`: socket类型 664ad52e57S裕依2439 /// - `protocol`: 传输协议 674ad52e57S裕依2439 /// - `fds`: 用于返回文件描述符的数组 684ad52e57S裕依2439 pub fn socketpair( 694ad52e57S裕依2439 address_family: usize, 704ad52e57S裕依2439 socket_type: usize, 714ad52e57S裕依2439 protocol: usize, 724ad52e57S裕依2439 fds: &mut [i32], 734ad52e57S裕依2439 ) -> Result<usize, SystemError> { 744ad52e57S裕依2439 let address_family = AddressFamily::try_from(address_family as u16)?; 754ad52e57S裕依2439 let socket_type = PosixSocketType::try_from((socket_type & 0xf) as u8)?; 764ad52e57S裕依2439 let protocol = Protocol::from(protocol as u8); 774ad52e57S裕依2439 784ad52e57S裕依2439 let mut socket0 = new_socket(address_family, socket_type, protocol)?; 794ad52e57S裕依2439 let mut socket1 = new_socket(address_family, socket_type, protocol)?; 804ad52e57S裕依2439 814ad52e57S裕依2439 socket0 824ad52e57S裕依2439 .socketpair_ops() 834ad52e57S裕依2439 .unwrap() 844ad52e57S裕依2439 .socketpair(&mut socket0, &mut socket1); 854ad52e57S裕依2439 864ad52e57S裕依2439 let binding = ProcessManager::current_pcb().fd_table(); 874ad52e57S裕依2439 let mut fd_table_guard = binding.write(); 884ad52e57S裕依2439 894ad52e57S裕依2439 let mut alloc_fd = |socket: Box<dyn Socket>| -> Result<i32, SystemError> { 904ad52e57S裕依2439 let socketinode = SocketInode::new(socket); 914ad52e57S裕依2439 let file = File::new(socketinode, FileMode::O_RDWR)?; 924ad52e57S裕依2439 fd_table_guard.alloc_fd(file, None) 934ad52e57S裕依2439 }; 944ad52e57S裕依2439 954ad52e57S裕依2439 fds[0] = alloc_fd(socket0)?; 964ad52e57S裕依2439 fds[1] = alloc_fd(socket1)?; 974ad52e57S裕依2439 984ad52e57S裕依2439 drop(fd_table_guard); 994ad52e57S裕依2439 Ok(0) 1004ad52e57S裕依2439 } 1014ad52e57S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 { 1534ad52e57S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 // 返回默认的接收缓冲区大小 160cde5492fSlogin unsafe { 1614ad52e57S裕依2439 *optval = socket.metadata()?.rx_buf_size as u32; 162cde5492fSlogin *optlen = core::mem::size_of::<u32>() as u32; 163cde5492fSlogin } 164cde5492fSlogin return Ok(0); 165cde5492fSlogin } 166cde5492fSlogin _ => { 167cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 168cde5492fSlogin } 169cde5492fSlogin } 170cde5492fSlogin } 171cde5492fSlogin drop(socket); 172cde5492fSlogin 173cde5492fSlogin // To manipulate options at any other level the 174cde5492fSlogin // protocol number of the appropriate protocol controlling the 175cde5492fSlogin // option is supplied. For example, to indicate that an option is 176cde5492fSlogin // to be interpreted by the TCP protocol, level should be set to the 177cde5492fSlogin // protocol number of TCP. 178cde5492fSlogin 179cde5492fSlogin let posix_protocol = 180cde5492fSlogin PosixIpProtocol::try_from(level as u16).map_err(|_| SystemError::ENOPROTOOPT)?; 181cde5492fSlogin if posix_protocol == PosixIpProtocol::TCP { 182cde5492fSlogin let optname = PosixTcpSocketOptions::try_from(optname as i32) 183cde5492fSlogin .map_err(|_| SystemError::ENOPROTOOPT)?; 184cde5492fSlogin match optname { 185cde5492fSlogin PosixTcpSocketOptions::Congestion => return Ok(0), 186cde5492fSlogin _ => { 187cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 188cde5492fSlogin } 189cde5492fSlogin } 190cde5492fSlogin } 191cde5492fSlogin return Err(SystemError::ENOPROTOOPT); 192cde5492fSlogin } 193cde5492fSlogin 194cde5492fSlogin /// @brief sys_connect系统调用的实际执行函数 195cde5492fSlogin /// 196cde5492fSlogin /// @param fd 文件描述符 197cde5492fSlogin /// @param addr SockAddr 198cde5492fSlogin /// @param addrlen 地址长度 199cde5492fSlogin /// 200cde5492fSlogin /// @return 成功返回0,失败返回错误码 201ab5c8ca4Slogin pub fn connect(fd: usize, addr: *const SockAddr, addrlen: usize) -> Result<usize, SystemError> { 202cde5492fSlogin let endpoint: Endpoint = SockAddr::to_endpoint(addr, addrlen)?; 2031496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 204cde5492fSlogin .get_socket(fd as i32) 205cde5492fSlogin .ok_or(SystemError::EBADF)?; 2062f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 207cde5492fSlogin // kdebug!("connect to {:?}...", endpoint); 208cde5492fSlogin socket.connect(endpoint)?; 209cde5492fSlogin return Ok(0); 210cde5492fSlogin } 211cde5492fSlogin 212cde5492fSlogin /// @brief sys_bind系统调用的实际执行函数 213cde5492fSlogin /// 214cde5492fSlogin /// @param fd 文件描述符 215cde5492fSlogin /// @param addr SockAddr 216cde5492fSlogin /// @param addrlen 地址长度 217cde5492fSlogin /// 218cde5492fSlogin /// @return 成功返回0,失败返回错误码 219ab5c8ca4Slogin pub fn bind(fd: usize, addr: *const SockAddr, addrlen: usize) -> Result<usize, SystemError> { 220cde5492fSlogin let endpoint: Endpoint = SockAddr::to_endpoint(addr, addrlen)?; 2211496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 222cde5492fSlogin .get_socket(fd as i32) 223cde5492fSlogin .ok_or(SystemError::EBADF)?; 2242f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 225cde5492fSlogin socket.bind(endpoint)?; 226cde5492fSlogin return Ok(0); 227cde5492fSlogin } 228cde5492fSlogin 229cde5492fSlogin /// @brief sys_sendto系统调用的实际执行函数 230cde5492fSlogin /// 231cde5492fSlogin /// @param fd 文件描述符 232cde5492fSlogin /// @param buf 发送缓冲区 233cde5492fSlogin /// @param flags 标志 234cde5492fSlogin /// @param addr SockAddr 235cde5492fSlogin /// @param addrlen 地址长度 236cde5492fSlogin /// 237cde5492fSlogin /// @return 成功返回发送的字节数,失败返回错误码 238ab5c8ca4Slogin pub fn sendto( 239cde5492fSlogin fd: usize, 240ab5c8ca4Slogin buf: &[u8], 241ab5c8ca4Slogin _flags: u32, 242cde5492fSlogin addr: *const SockAddr, 243cde5492fSlogin addrlen: usize, 244ab5c8ca4Slogin ) -> Result<usize, SystemError> { 245cde5492fSlogin let endpoint = if addr.is_null() { 246cde5492fSlogin None 247cde5492fSlogin } else { 248cde5492fSlogin Some(SockAddr::to_endpoint(addr, addrlen)?) 249cde5492fSlogin }; 250cde5492fSlogin 2511496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 252cde5492fSlogin .get_socket(fd as i32) 253cde5492fSlogin .ok_or(SystemError::EBADF)?; 2542f6f547aSGnoCiYeH let socket = unsafe { socket.inner_no_preempt() }; 255ab5c8ca4Slogin return socket.write(buf, endpoint); 256cde5492fSlogin } 257cde5492fSlogin 258cde5492fSlogin /// @brief sys_recvfrom系统调用的实际执行函数 259cde5492fSlogin /// 260cde5492fSlogin /// @param fd 文件描述符 261cde5492fSlogin /// @param buf 接收缓冲区 262cde5492fSlogin /// @param flags 标志 263cde5492fSlogin /// @param addr SockAddr 264cde5492fSlogin /// @param addrlen 地址长度 265cde5492fSlogin /// 266cde5492fSlogin /// @return 成功返回接收的字节数,失败返回错误码 267ab5c8ca4Slogin pub fn recvfrom( 268cde5492fSlogin fd: usize, 269ab5c8ca4Slogin buf: &mut [u8], 270ab5c8ca4Slogin _flags: u32, 271cde5492fSlogin addr: *mut SockAddr, 272cde5492fSlogin addrlen: *mut u32, 273ab5c8ca4Slogin ) -> Result<usize, SystemError> { 2741496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 275cde5492fSlogin .get_socket(fd as i32) 276cde5492fSlogin .ok_or(SystemError::EBADF)?; 27740609970SGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 278cde5492fSlogin 279cde5492fSlogin let (n, endpoint) = socket.read(buf); 280cde5492fSlogin drop(socket); 281cde5492fSlogin 282cde5492fSlogin let n: usize = n?; 283cde5492fSlogin 284cde5492fSlogin // 如果有地址信息,将地址信息写入用户空间 285cde5492fSlogin if !addr.is_null() { 286cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 287cde5492fSlogin unsafe { 288cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 289cde5492fSlogin } 290cde5492fSlogin } 291ab5c8ca4Slogin return Ok(n); 292cde5492fSlogin } 293cde5492fSlogin 294cde5492fSlogin /// @brief sys_recvmsg系统调用的实际执行函数 295cde5492fSlogin /// 296cde5492fSlogin /// @param fd 文件描述符 297cde5492fSlogin /// @param msg MsgHdr 298ab5c8ca4Slogin /// @param flags 标志,暂时未使用 299cde5492fSlogin /// 300cde5492fSlogin /// @return 成功返回接收的字节数,失败返回错误码 301ab5c8ca4Slogin pub fn recvmsg(fd: usize, msg: &mut MsgHdr, _flags: u32) -> Result<usize, SystemError> { 302cde5492fSlogin // 检查每个缓冲区地址是否合法,生成iovecs 303cde5492fSlogin let mut iovs = unsafe { IoVecs::from_user(msg.msg_iov, msg.msg_iovlen, true)? }; 304cde5492fSlogin 3051496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 306cde5492fSlogin .get_socket(fd as i32) 307cde5492fSlogin .ok_or(SystemError::EBADF)?; 30840609970SGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 309cde5492fSlogin 310cde5492fSlogin let mut buf = iovs.new_buf(true); 311cde5492fSlogin // 从socket中读取数据 312cde5492fSlogin let (n, endpoint) = socket.read(&mut buf); 313cde5492fSlogin drop(socket); 314cde5492fSlogin 315cde5492fSlogin let n: usize = n?; 316cde5492fSlogin 317cde5492fSlogin // 将数据写入用户空间的iovecs 318cde5492fSlogin iovs.scatter(&buf[..n]); 319cde5492fSlogin 320cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 321cde5492fSlogin unsafe { 322cde5492fSlogin sockaddr_in.write_to_user(msg.msg_name, &mut msg.msg_namelen)?; 323cde5492fSlogin } 324ab5c8ca4Slogin return Ok(n); 325cde5492fSlogin } 326cde5492fSlogin 327cde5492fSlogin /// @brief sys_listen系统调用的实际执行函数 328cde5492fSlogin /// 329cde5492fSlogin /// @param fd 文件描述符 330ab5c8ca4Slogin /// @param backlog 队列最大连接数 331cde5492fSlogin /// 332cde5492fSlogin /// @return 成功返回0,失败返回错误码 333ab5c8ca4Slogin pub fn listen(fd: usize, backlog: usize) -> Result<usize, SystemError> { 3341496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 335cde5492fSlogin .get_socket(fd as i32) 336cde5492fSlogin .ok_or(SystemError::EBADF)?; 3372f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 338cde5492fSlogin socket.listen(backlog)?; 339cde5492fSlogin return Ok(0); 340cde5492fSlogin } 341cde5492fSlogin 342cde5492fSlogin /// @brief sys_shutdown系统调用的实际执行函数 343cde5492fSlogin /// 344cde5492fSlogin /// @param fd 文件描述符 345cde5492fSlogin /// @param how 关闭方式 346cde5492fSlogin /// 347cde5492fSlogin /// @return 成功返回0,失败返回错误码 348ab5c8ca4Slogin pub fn shutdown(fd: usize, how: usize) -> Result<usize, SystemError> { 3491496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 350cde5492fSlogin .get_socket(fd as i32) 351cde5492fSlogin .ok_or(SystemError::EBADF)?; 35240609970SGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 35340609970SGnoCiYeH socket.shutdown(ShutdownType::from_bits_truncate(how as u8))?; 354cde5492fSlogin return Ok(0); 355cde5492fSlogin } 356cde5492fSlogin 357cde5492fSlogin /// @brief sys_accept系统调用的实际执行函数 358cde5492fSlogin /// 359cde5492fSlogin /// @param fd 文件描述符 360cde5492fSlogin /// @param addr SockAddr 361cde5492fSlogin /// @param addrlen 地址长度 362cde5492fSlogin /// 363cde5492fSlogin /// @return 成功返回新的文件描述符,失败返回错误码 364ab5c8ca4Slogin pub fn accept(fd: usize, addr: *mut SockAddr, addrlen: *mut u32) -> Result<usize, SystemError> { 365c47fe904SLoGin return Self::do_accept(fd, addr, addrlen, 0); 366c47fe904SLoGin } 367c47fe904SLoGin 368c47fe904SLoGin /// sys_accept4 - accept a connection on a socket 369c47fe904SLoGin /// 370c47fe904SLoGin /// 371c47fe904SLoGin /// If flags is 0, then accept4() is the same as accept(). The 372c47fe904SLoGin /// following values can be bitwise ORed in flags to obtain different 373c47fe904SLoGin /// behavior: 374c47fe904SLoGin /// 375c47fe904SLoGin /// - SOCK_NONBLOCK 376c47fe904SLoGin /// Set the O_NONBLOCK file status flag on the open file 377c47fe904SLoGin /// description (see open(2)) referred to by the new file 378c47fe904SLoGin /// descriptor. Using this flag saves extra calls to fcntl(2) 379c47fe904SLoGin /// to achieve the same result. 380c47fe904SLoGin /// 381c47fe904SLoGin /// - SOCK_CLOEXEC 382c47fe904SLoGin /// Set the close-on-exec (FD_CLOEXEC) flag on the new file 383c47fe904SLoGin /// descriptor. See the description of the O_CLOEXEC flag in 384c47fe904SLoGin /// open(2) for reasons why this may be useful. 385c47fe904SLoGin pub fn accept4( 386c47fe904SLoGin fd: usize, 387c47fe904SLoGin addr: *mut SockAddr, 388c47fe904SLoGin addrlen: *mut u32, 389c47fe904SLoGin mut flags: u32, 390c47fe904SLoGin ) -> Result<usize, SystemError> { 391c47fe904SLoGin // 如果flags不合法,返回错误 392c47fe904SLoGin if (flags & (!(SOCK_CLOEXEC | SOCK_NONBLOCK)).bits()) != 0 { 393c47fe904SLoGin return Err(SystemError::EINVAL); 394c47fe904SLoGin } 395c47fe904SLoGin 396c47fe904SLoGin if SOCK_NONBLOCK != FileMode::O_NONBLOCK && ((flags & SOCK_NONBLOCK.bits()) != 0) { 3974ad52e57S裕依2439 flags = (flags & !FileMode::O_NONBLOCK.bits()) | FileMode::O_NONBLOCK.bits(); 398c47fe904SLoGin } 399c47fe904SLoGin 400c47fe904SLoGin return Self::do_accept(fd, addr, addrlen, flags); 401c47fe904SLoGin } 402c47fe904SLoGin 403c47fe904SLoGin fn do_accept( 404c47fe904SLoGin fd: usize, 405c47fe904SLoGin addr: *mut SockAddr, 406c47fe904SLoGin addrlen: *mut u32, 407c47fe904SLoGin flags: u32, 408c47fe904SLoGin ) -> Result<usize, SystemError> { 4091496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 410cde5492fSlogin .get_socket(fd as i32) 411cde5492fSlogin .ok_or(SystemError::EBADF)?; 412cde5492fSlogin // kdebug!("accept: socket={:?}", socket); 4132f6f547aSGnoCiYeH let mut socket = unsafe { socket.inner_no_preempt() }; 414cde5492fSlogin // 从socket中接收连接 415cde5492fSlogin let (new_socket, remote_endpoint) = socket.accept()?; 416cde5492fSlogin drop(socket); 417cde5492fSlogin 418cde5492fSlogin // kdebug!("accept: new_socket={:?}", new_socket); 419cde5492fSlogin // Insert the new socket into the file descriptor vector 420cde5492fSlogin let new_socket: Arc<SocketInode> = SocketInode::new(new_socket); 421c47fe904SLoGin 422c47fe904SLoGin let mut file_mode = FileMode::O_RDWR; 4234ad52e57S裕依2439 if flags & SOCK_NONBLOCK.bits() != 0 { 424c47fe904SLoGin file_mode |= FileMode::O_NONBLOCK; 425c47fe904SLoGin } 4264ad52e57S裕依2439 if flags & SOCK_CLOEXEC.bits() != 0 { 427c47fe904SLoGin file_mode |= FileMode::O_CLOEXEC; 428c47fe904SLoGin } 429c47fe904SLoGin 4301496ba7bSLoGin let new_fd = ProcessManager::current_pcb() 4311496ba7bSLoGin .fd_table() 4321496ba7bSLoGin .write() 433c47fe904SLoGin .alloc_fd(File::new(new_socket, file_mode)?, None)?; 434cde5492fSlogin // kdebug!("accept: new_fd={}", new_fd); 435cde5492fSlogin if !addr.is_null() { 436cde5492fSlogin // kdebug!("accept: write remote_endpoint to user"); 437cde5492fSlogin // 将对端地址写入用户空间 438cde5492fSlogin let sockaddr_in = SockAddr::from(remote_endpoint); 439cde5492fSlogin unsafe { 440cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 441cde5492fSlogin } 442cde5492fSlogin } 443ab5c8ca4Slogin return Ok(new_fd as usize); 444cde5492fSlogin } 445cde5492fSlogin 446cde5492fSlogin /// @brief sys_getsockname系统调用的实际执行函数 447cde5492fSlogin /// 448cde5492fSlogin /// Returns the current address to which the socket 449cde5492fSlogin /// sockfd is bound, in the buffer pointed to by addr. 450cde5492fSlogin /// 451cde5492fSlogin /// @param fd 文件描述符 452cde5492fSlogin /// @param addr SockAddr 453cde5492fSlogin /// @param addrlen 地址长度 454cde5492fSlogin /// 455cde5492fSlogin /// @return 成功返回0,失败返回错误码 456ab5c8ca4Slogin pub fn getsockname( 457cde5492fSlogin fd: usize, 458cde5492fSlogin addr: *mut SockAddr, 459cde5492fSlogin addrlen: *mut u32, 460ab5c8ca4Slogin ) -> Result<usize, SystemError> { 461cde5492fSlogin if addr.is_null() { 462cde5492fSlogin return Err(SystemError::EINVAL); 463cde5492fSlogin } 4641496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 465cde5492fSlogin .get_socket(fd as i32) 466cde5492fSlogin .ok_or(SystemError::EBADF)?; 467cde5492fSlogin let socket = socket.inner(); 468cde5492fSlogin let endpoint: Endpoint = socket.endpoint().ok_or(SystemError::EINVAL)?; 469cde5492fSlogin drop(socket); 470cde5492fSlogin 471cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 472cde5492fSlogin unsafe { 473cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 474cde5492fSlogin } 475cde5492fSlogin return Ok(0); 476cde5492fSlogin } 477cde5492fSlogin 478cde5492fSlogin /// @brief sys_getpeername系统调用的实际执行函数 479cde5492fSlogin /// 480cde5492fSlogin /// @param fd 文件描述符 481cde5492fSlogin /// @param addr SockAddr 482cde5492fSlogin /// @param addrlen 地址长度 483cde5492fSlogin /// 484cde5492fSlogin /// @return 成功返回0,失败返回错误码 485ab5c8ca4Slogin pub fn getpeername( 486cde5492fSlogin fd: usize, 487cde5492fSlogin addr: *mut SockAddr, 488cde5492fSlogin addrlen: *mut u32, 489ab5c8ca4Slogin ) -> Result<usize, SystemError> { 490cde5492fSlogin if addr.is_null() { 491cde5492fSlogin return Err(SystemError::EINVAL); 492cde5492fSlogin } 493cde5492fSlogin 4941496ba7bSLoGin let socket: Arc<SocketInode> = ProcessManager::current_pcb() 495cde5492fSlogin .get_socket(fd as i32) 496cde5492fSlogin .ok_or(SystemError::EBADF)?; 497cde5492fSlogin let socket = socket.inner(); 498cde5492fSlogin let endpoint: Endpoint = socket.peer_endpoint().ok_or(SystemError::EINVAL)?; 499cde5492fSlogin drop(socket); 500cde5492fSlogin 501cde5492fSlogin let sockaddr_in = SockAddr::from(endpoint); 502cde5492fSlogin unsafe { 503cde5492fSlogin sockaddr_in.write_to_user(addr, addrlen)?; 504cde5492fSlogin } 505cde5492fSlogin return Ok(0); 506cde5492fSlogin } 507ab5c8ca4Slogin } 508cde5492fSlogin 509cde5492fSlogin // 参考资料: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/netinet_in.h.html#tag_13_32 510cde5492fSlogin #[repr(C)] 511cde5492fSlogin #[derive(Debug, Clone, Copy)] 512cde5492fSlogin pub struct SockAddrIn { 513cde5492fSlogin pub sin_family: u16, 514cde5492fSlogin pub sin_port: u16, 515cde5492fSlogin pub sin_addr: u32, 516cde5492fSlogin pub sin_zero: [u8; 8], 517cde5492fSlogin } 518cde5492fSlogin 519cde5492fSlogin #[repr(C)] 520cde5492fSlogin #[derive(Debug, Clone, Copy)] 521cde5492fSlogin pub struct SockAddrUn { 522cde5492fSlogin pub sun_family: u16, 523cde5492fSlogin pub sun_path: [u8; 108], 524cde5492fSlogin } 525cde5492fSlogin 526cde5492fSlogin #[repr(C)] 527cde5492fSlogin #[derive(Debug, Clone, Copy)] 528cde5492fSlogin pub struct SockAddrLl { 529cde5492fSlogin pub sll_family: u16, 530cde5492fSlogin pub sll_protocol: u16, 531cde5492fSlogin pub sll_ifindex: u32, 532cde5492fSlogin pub sll_hatype: u16, 533cde5492fSlogin pub sll_pkttype: u8, 534cde5492fSlogin pub sll_halen: u8, 535cde5492fSlogin pub sll_addr: [u8; 8], 536cde5492fSlogin } 537cde5492fSlogin 538cde5492fSlogin #[repr(C)] 539cde5492fSlogin #[derive(Debug, Clone, Copy)] 540cde5492fSlogin pub struct SockAddrNl { 541cde5492fSlogin nl_family: u16, 542cde5492fSlogin nl_pad: u16, 543cde5492fSlogin nl_pid: u32, 544cde5492fSlogin nl_groups: u32, 545cde5492fSlogin } 546cde5492fSlogin 547cde5492fSlogin #[repr(C)] 548cde5492fSlogin #[derive(Debug, Clone, Copy)] 549cde5492fSlogin pub struct SockAddrPlaceholder { 550cde5492fSlogin pub family: u16, 551cde5492fSlogin pub data: [u8; 14], 552cde5492fSlogin } 553cde5492fSlogin 554cde5492fSlogin #[repr(C)] 555cde5492fSlogin #[derive(Clone, Copy)] 556cde5492fSlogin pub union SockAddr { 557cde5492fSlogin pub family: u16, 558cde5492fSlogin pub addr_in: SockAddrIn, 559cde5492fSlogin pub addr_un: SockAddrUn, 560cde5492fSlogin pub addr_ll: SockAddrLl, 561cde5492fSlogin pub addr_nl: SockAddrNl, 562cde5492fSlogin pub addr_ph: SockAddrPlaceholder, 563cde5492fSlogin } 564cde5492fSlogin 565cde5492fSlogin impl SockAddr { 566cde5492fSlogin /// @brief 把用户传入的SockAddr转换为Endpoint结构体 567cde5492fSlogin pub fn to_endpoint(addr: *const SockAddr, len: usize) -> Result<Endpoint, SystemError> { 568cde5492fSlogin verify_area( 5694fda81ceSLoGin VirtAddr::new(addr as usize), 5704fda81ceSLoGin core::mem::size_of::<SockAddr>(), 571cde5492fSlogin ) 5724fda81ceSLoGin .map_err(|_| SystemError::EFAULT)?; 573cde5492fSlogin 574cde5492fSlogin let addr = unsafe { addr.as_ref() }.ok_or(SystemError::EFAULT)?; 575cde5492fSlogin if len < addr.len()? { 576cde5492fSlogin return Err(SystemError::EINVAL); 577cde5492fSlogin } 578cde5492fSlogin unsafe { 579cde5492fSlogin match AddressFamily::try_from(addr.family)? { 580cde5492fSlogin AddressFamily::INet => { 581cde5492fSlogin let addr_in: SockAddrIn = addr.addr_in; 582cde5492fSlogin 583cde5492fSlogin let ip: wire::IpAddress = wire::IpAddress::from(wire::Ipv4Address::from_bytes( 584cde5492fSlogin &u32::from_be(addr_in.sin_addr).to_be_bytes()[..], 585cde5492fSlogin )); 586cde5492fSlogin let port = u16::from_be(addr_in.sin_port); 587cde5492fSlogin 588cde5492fSlogin return Ok(Endpoint::Ip(Some(wire::IpEndpoint::new(ip, port)))); 589cde5492fSlogin } 590cde5492fSlogin AddressFamily::Packet => { 591cde5492fSlogin // TODO: support packet socket 592cde5492fSlogin return Err(SystemError::EINVAL); 593cde5492fSlogin } 594cde5492fSlogin AddressFamily::Netlink => { 595cde5492fSlogin // TODO: support netlink socket 596cde5492fSlogin return Err(SystemError::EINVAL); 597cde5492fSlogin } 598cde5492fSlogin AddressFamily::Unix => { 599cde5492fSlogin return Err(SystemError::EINVAL); 600cde5492fSlogin } 601cde5492fSlogin _ => { 602cde5492fSlogin return Err(SystemError::EINVAL); 603cde5492fSlogin } 604cde5492fSlogin } 605cde5492fSlogin } 606cde5492fSlogin } 607cde5492fSlogin 608cde5492fSlogin /// @brief 获取地址长度 609cde5492fSlogin pub fn len(&self) -> Result<usize, SystemError> { 610cde5492fSlogin let ret = match AddressFamily::try_from(unsafe { self.family })? { 611cde5492fSlogin AddressFamily::INet => Ok(core::mem::size_of::<SockAddrIn>()), 612cde5492fSlogin AddressFamily::Packet => Ok(core::mem::size_of::<SockAddrLl>()), 613cde5492fSlogin AddressFamily::Netlink => Ok(core::mem::size_of::<SockAddrNl>()), 614cde5492fSlogin AddressFamily::Unix => Err(SystemError::EINVAL), 615cde5492fSlogin _ => Err(SystemError::EINVAL), 616cde5492fSlogin }; 617cde5492fSlogin 618cde5492fSlogin return ret; 619cde5492fSlogin } 620cde5492fSlogin 621cde5492fSlogin /// @brief 把SockAddr的数据写入用户空间 622cde5492fSlogin /// 623cde5492fSlogin /// @param addr 用户空间的SockAddr的地址 624cde5492fSlogin /// @param len 要写入的长度 625cde5492fSlogin /// 626cde5492fSlogin /// @return 成功返回写入的长度,失败返回错误码 627cde5492fSlogin pub unsafe fn write_to_user( 628cde5492fSlogin &self, 629cde5492fSlogin addr: *mut SockAddr, 630cde5492fSlogin addr_len: *mut u32, 631cde5492fSlogin ) -> Result<usize, SystemError> { 632cde5492fSlogin // 当用户传入的地址或者长度为空时,直接返回0 633cde5492fSlogin if addr.is_null() || addr_len.is_null() { 634cde5492fSlogin return Ok(0); 635cde5492fSlogin } 6364fda81ceSLoGin 637cde5492fSlogin // 检查用户传入的地址是否合法 6384fda81ceSLoGin verify_area( 6394fda81ceSLoGin VirtAddr::new(addr as usize), 6404fda81ceSLoGin core::mem::size_of::<SockAddr>(), 6414fda81ceSLoGin ) 6424fda81ceSLoGin .map_err(|_| SystemError::EFAULT)?; 6434fda81ceSLoGin 6444fda81ceSLoGin verify_area( 6454fda81ceSLoGin VirtAddr::new(addr_len as usize), 6464fda81ceSLoGin core::mem::size_of::<u32>(), 6474fda81ceSLoGin ) 6484fda81ceSLoGin .map_err(|_| SystemError::EFAULT)?; 649cde5492fSlogin 650cde5492fSlogin let to_write = min(self.len()?, *addr_len as usize); 651cde5492fSlogin if to_write > 0 { 652cde5492fSlogin let buf = core::slice::from_raw_parts_mut(addr as *mut u8, to_write); 653cde5492fSlogin buf.copy_from_slice(core::slice::from_raw_parts( 654cde5492fSlogin self as *const SockAddr as *const u8, 655cde5492fSlogin to_write, 656cde5492fSlogin )); 657cde5492fSlogin } 658cde5492fSlogin *addr_len = self.len()? as u32; 659cde5492fSlogin return Ok(to_write); 660cde5492fSlogin } 661cde5492fSlogin } 662cde5492fSlogin 663cde5492fSlogin impl From<Endpoint> for SockAddr { 664cde5492fSlogin fn from(value: Endpoint) -> Self { 665cde5492fSlogin match value { 666cde5492fSlogin Endpoint::Ip(ip_endpoint) => { 667cde5492fSlogin // 未指定地址 668*b5b571e0SLoGin if ip_endpoint.is_none() { 669cde5492fSlogin return SockAddr { 670cde5492fSlogin addr_ph: SockAddrPlaceholder { 671cde5492fSlogin family: AddressFamily::Unspecified as u16, 672cde5492fSlogin data: [0; 14], 673cde5492fSlogin }, 674cde5492fSlogin }; 675cde5492fSlogin } 676cde5492fSlogin // 指定了地址 677cde5492fSlogin let ip_endpoint = ip_endpoint.unwrap(); 678cde5492fSlogin match ip_endpoint.addr { 679cde5492fSlogin wire::IpAddress::Ipv4(ipv4_addr) => { 680cde5492fSlogin let addr_in = SockAddrIn { 681cde5492fSlogin sin_family: AddressFamily::INet as u16, 682cde5492fSlogin sin_port: ip_endpoint.port.to_be(), 683cde5492fSlogin sin_addr: u32::from_be_bytes(ipv4_addr.0).to_be(), 684cde5492fSlogin sin_zero: [0; 8], 685cde5492fSlogin }; 686cde5492fSlogin 687cde5492fSlogin return SockAddr { addr_in }; 688cde5492fSlogin } 689cde5492fSlogin _ => { 690cde5492fSlogin unimplemented!("not support ipv6"); 691cde5492fSlogin } 692cde5492fSlogin } 693cde5492fSlogin } 694cde5492fSlogin 695cde5492fSlogin Endpoint::LinkLayer(link_endpoint) => { 696cde5492fSlogin let addr_ll = SockAddrLl { 697cde5492fSlogin sll_family: AddressFamily::Packet as u16, 698cde5492fSlogin sll_protocol: 0, 699cde5492fSlogin sll_ifindex: link_endpoint.interface as u32, 700cde5492fSlogin sll_hatype: 0, 701cde5492fSlogin sll_pkttype: 0, 702cde5492fSlogin sll_halen: 0, 703cde5492fSlogin sll_addr: [0; 8], 704cde5492fSlogin }; 705cde5492fSlogin 706cde5492fSlogin return SockAddr { addr_ll }; 7074ad52e57S裕依2439 } 7084ad52e57S裕依2439 _ => { 7094ad52e57S裕依2439 // todo: support other endpoint, like Netlink... 7104ad52e57S裕依2439 unimplemented!("not support {value:?}"); 7114ad52e57S裕依2439 } 712cde5492fSlogin } 713cde5492fSlogin } 714cde5492fSlogin } 715cde5492fSlogin 716cde5492fSlogin #[repr(C)] 717cde5492fSlogin #[derive(Debug, Clone, Copy)] 718cde5492fSlogin pub struct MsgHdr { 719cde5492fSlogin /// 指向一个SockAddr结构体的指针 720cde5492fSlogin pub msg_name: *mut SockAddr, 721cde5492fSlogin /// SockAddr结构体的大小 722cde5492fSlogin pub msg_namelen: u32, 723cde5492fSlogin /// scatter/gather array 724cde5492fSlogin pub msg_iov: *mut IoVec, 725cde5492fSlogin /// elements in msg_iov 726cde5492fSlogin pub msg_iovlen: usize, 727cde5492fSlogin /// 辅助数据 728cde5492fSlogin pub msg_control: *mut u8, 729cde5492fSlogin /// 辅助数据长度 730cde5492fSlogin pub msg_controllen: usize, 731cde5492fSlogin /// 接收到的消息的标志 732cde5492fSlogin pub msg_flags: u32, 733cde5492fSlogin } 734cde5492fSlogin 735cde5492fSlogin #[derive(Debug, Clone, Copy, FromPrimitive, ToPrimitive, PartialEq, Eq)] 736cde5492fSlogin pub enum PosixIpProtocol { 737cde5492fSlogin /// Dummy protocol for TCP. 738cde5492fSlogin IP = 0, 739cde5492fSlogin /// Internet Control Message Protocol. 740cde5492fSlogin ICMP = 1, 741cde5492fSlogin /// Internet Group Management Protocol. 742cde5492fSlogin IGMP = 2, 743cde5492fSlogin /// IPIP tunnels (older KA9Q tunnels use 94). 744cde5492fSlogin IPIP = 4, 745cde5492fSlogin /// Transmission Control Protocol. 746cde5492fSlogin TCP = 6, 747cde5492fSlogin /// Exterior Gateway Protocol. 748cde5492fSlogin EGP = 8, 749cde5492fSlogin /// PUP protocol. 750cde5492fSlogin PUP = 12, 751cde5492fSlogin /// User Datagram Protocol. 752cde5492fSlogin UDP = 17, 753cde5492fSlogin /// XNS IDP protocol. 754cde5492fSlogin IDP = 22, 755cde5492fSlogin /// SO Transport Protocol Class 4. 756cde5492fSlogin TP = 29, 757cde5492fSlogin /// Datagram Congestion Control Protocol. 758cde5492fSlogin DCCP = 33, 759cde5492fSlogin /// IPv6-in-IPv4 tunnelling. 760cde5492fSlogin IPv6 = 41, 761cde5492fSlogin /// RSVP Protocol. 762cde5492fSlogin RSVP = 46, 763cde5492fSlogin /// Generic Routing Encapsulation. (Cisco GRE) (rfc 1701, 1702) 764cde5492fSlogin GRE = 47, 765cde5492fSlogin /// Encapsulation Security Payload protocol 766cde5492fSlogin ESP = 50, 767cde5492fSlogin /// Authentication Header protocol 768cde5492fSlogin AH = 51, 769cde5492fSlogin /// Multicast Transport Protocol. 770cde5492fSlogin MTP = 92, 771cde5492fSlogin /// IP option pseudo header for BEET 772cde5492fSlogin BEETPH = 94, 773cde5492fSlogin /// Encapsulation Header. 774cde5492fSlogin ENCAP = 98, 775cde5492fSlogin /// Protocol Independent Multicast. 776cde5492fSlogin PIM = 103, 777cde5492fSlogin /// Compression Header Protocol. 778cde5492fSlogin COMP = 108, 779cde5492fSlogin /// Stream Control Transport Protocol 780cde5492fSlogin SCTP = 132, 781cde5492fSlogin /// UDP-Lite protocol (RFC 3828) 782cde5492fSlogin UDPLITE = 136, 783cde5492fSlogin /// MPLS in IP (RFC 4023) 784cde5492fSlogin MPLSINIP = 137, 785cde5492fSlogin /// Ethernet-within-IPv6 Encapsulation 786cde5492fSlogin ETHERNET = 143, 787cde5492fSlogin /// Raw IP packets 788cde5492fSlogin RAW = 255, 789cde5492fSlogin /// Multipath TCP connection 790cde5492fSlogin MPTCP = 262, 791cde5492fSlogin } 792cde5492fSlogin 793cde5492fSlogin impl TryFrom<u16> for PosixIpProtocol { 794cde5492fSlogin type Error = SystemError; 795cde5492fSlogin 796cde5492fSlogin fn try_from(value: u16) -> Result<Self, Self::Error> { 797cde5492fSlogin match <Self as FromPrimitive>::from_u16(value) { 798cde5492fSlogin Some(p) => Ok(p), 799cde5492fSlogin None => Err(SystemError::EPROTONOSUPPORT), 800cde5492fSlogin } 801cde5492fSlogin } 802cde5492fSlogin } 803cde5492fSlogin 804*b5b571e0SLoGin impl From<PosixIpProtocol> for u16 { 805*b5b571e0SLoGin fn from(value: PosixIpProtocol) -> Self { 806*b5b571e0SLoGin <PosixIpProtocol as ToPrimitive>::to_u16(&value).unwrap() 807cde5492fSlogin } 808cde5492fSlogin } 809cde5492fSlogin 810cde5492fSlogin #[allow(non_camel_case_types)] 811cde5492fSlogin #[derive(Debug, Clone, Copy, FromPrimitive, ToPrimitive, PartialEq, Eq)] 812cde5492fSlogin pub enum PosixSocketOption { 813cde5492fSlogin SO_DEBUG = 1, 814cde5492fSlogin SO_REUSEADDR = 2, 815cde5492fSlogin SO_TYPE = 3, 816cde5492fSlogin SO_ERROR = 4, 817cde5492fSlogin SO_DONTROUTE = 5, 818cde5492fSlogin SO_BROADCAST = 6, 819cde5492fSlogin SO_SNDBUF = 7, 820cde5492fSlogin SO_RCVBUF = 8, 821cde5492fSlogin SO_SNDBUFFORCE = 32, 822cde5492fSlogin SO_RCVBUFFORCE = 33, 823cde5492fSlogin SO_KEEPALIVE = 9, 824cde5492fSlogin SO_OOBINLINE = 10, 825cde5492fSlogin SO_NO_CHECK = 11, 826cde5492fSlogin SO_PRIORITY = 12, 827cde5492fSlogin SO_LINGER = 13, 828cde5492fSlogin SO_BSDCOMPAT = 14, 829cde5492fSlogin SO_REUSEPORT = 15, 830cde5492fSlogin SO_PASSCRED = 16, 831cde5492fSlogin SO_PEERCRED = 17, 832cde5492fSlogin SO_RCVLOWAT = 18, 833cde5492fSlogin SO_SNDLOWAT = 19, 834cde5492fSlogin SO_RCVTIMEO_OLD = 20, 835cde5492fSlogin SO_SNDTIMEO_OLD = 21, 836cde5492fSlogin 837cde5492fSlogin SO_SECURITY_AUTHENTICATION = 22, 838cde5492fSlogin SO_SECURITY_ENCRYPTION_TRANSPORT = 23, 839cde5492fSlogin SO_SECURITY_ENCRYPTION_NETWORK = 24, 840cde5492fSlogin 841cde5492fSlogin SO_BINDTODEVICE = 25, 842cde5492fSlogin 843cde5492fSlogin /// 与SO_GET_FILTER相同 844cde5492fSlogin SO_ATTACH_FILTER = 26, 845cde5492fSlogin SO_DETACH_FILTER = 27, 846cde5492fSlogin 847cde5492fSlogin SO_PEERNAME = 28, 848cde5492fSlogin 849cde5492fSlogin SO_ACCEPTCONN = 30, 850cde5492fSlogin 851cde5492fSlogin SO_PEERSEC = 31, 852cde5492fSlogin SO_PASSSEC = 34, 853cde5492fSlogin 854cde5492fSlogin SO_MARK = 36, 855cde5492fSlogin 856cde5492fSlogin SO_PROTOCOL = 38, 857cde5492fSlogin SO_DOMAIN = 39, 858cde5492fSlogin 859cde5492fSlogin SO_RXQ_OVFL = 40, 860cde5492fSlogin 861cde5492fSlogin /// 与SCM_WIFI_STATUS相同 862cde5492fSlogin SO_WIFI_STATUS = 41, 863cde5492fSlogin SO_PEEK_OFF = 42, 864cde5492fSlogin 865cde5492fSlogin /* Instruct lower device to use last 4-bytes of skb data as FCS */ 866cde5492fSlogin SO_NOFCS = 43, 867cde5492fSlogin 868cde5492fSlogin SO_LOCK_FILTER = 44, 869cde5492fSlogin SO_SELECT_ERR_QUEUE = 45, 870cde5492fSlogin SO_BUSY_POLL = 46, 871cde5492fSlogin SO_MAX_PACING_RATE = 47, 872cde5492fSlogin SO_BPF_EXTENSIONS = 48, 873cde5492fSlogin SO_INCOMING_CPU = 49, 874cde5492fSlogin SO_ATTACH_BPF = 50, 875cde5492fSlogin // SO_DETACH_BPF = SO_DETACH_FILTER, 876cde5492fSlogin SO_ATTACH_REUSEPORT_CBPF = 51, 877cde5492fSlogin SO_ATTACH_REUSEPORT_EBPF = 52, 878cde5492fSlogin 879cde5492fSlogin SO_CNX_ADVICE = 53, 880cde5492fSlogin SCM_TIMESTAMPING_OPT_STATS = 54, 881cde5492fSlogin SO_MEMINFO = 55, 882cde5492fSlogin SO_INCOMING_NAPI_ID = 56, 883cde5492fSlogin SO_COOKIE = 57, 884cde5492fSlogin SCM_TIMESTAMPING_PKTINFO = 58, 885cde5492fSlogin SO_PEERGROUPS = 59, 886cde5492fSlogin SO_ZEROCOPY = 60, 887cde5492fSlogin /// 与SCM_TXTIME相同 888cde5492fSlogin SO_TXTIME = 61, 889cde5492fSlogin 890cde5492fSlogin SO_BINDTOIFINDEX = 62, 891cde5492fSlogin 892cde5492fSlogin SO_TIMESTAMP_OLD = 29, 893cde5492fSlogin SO_TIMESTAMPNS_OLD = 35, 894cde5492fSlogin SO_TIMESTAMPING_OLD = 37, 895cde5492fSlogin SO_TIMESTAMP_NEW = 63, 896cde5492fSlogin SO_TIMESTAMPNS_NEW = 64, 897cde5492fSlogin SO_TIMESTAMPING_NEW = 65, 898cde5492fSlogin 899cde5492fSlogin SO_RCVTIMEO_NEW = 66, 900cde5492fSlogin SO_SNDTIMEO_NEW = 67, 901cde5492fSlogin 902cde5492fSlogin SO_DETACH_REUSEPORT_BPF = 68, 903cde5492fSlogin 904cde5492fSlogin SO_PREFER_BUSY_POLL = 69, 905cde5492fSlogin SO_BUSY_POLL_BUDGET = 70, 906cde5492fSlogin 907cde5492fSlogin SO_NETNS_COOKIE = 71, 908cde5492fSlogin SO_BUF_LOCK = 72, 909cde5492fSlogin SO_RESERVE_MEM = 73, 910cde5492fSlogin SO_TXREHASH = 74, 911cde5492fSlogin SO_RCVMARK = 75, 912cde5492fSlogin } 913cde5492fSlogin 914cde5492fSlogin impl TryFrom<i32> for PosixSocketOption { 915cde5492fSlogin type Error = SystemError; 916cde5492fSlogin 917cde5492fSlogin fn try_from(value: i32) -> Result<Self, Self::Error> { 918cde5492fSlogin match <Self as FromPrimitive>::from_i32(value) { 919cde5492fSlogin Some(p) => Ok(p), 920cde5492fSlogin None => Err(SystemError::EINVAL), 921cde5492fSlogin } 922cde5492fSlogin } 923cde5492fSlogin } 924cde5492fSlogin 925*b5b571e0SLoGin impl From<PosixSocketOption> for i32 { 926*b5b571e0SLoGin fn from(value: PosixSocketOption) -> Self { 927*b5b571e0SLoGin <PosixSocketOption as ToPrimitive>::to_i32(&value).unwrap() 928cde5492fSlogin } 929cde5492fSlogin } 930cde5492fSlogin 931cde5492fSlogin #[derive(Debug, Clone, Copy, PartialEq, Eq, FromPrimitive, ToPrimitive)] 932cde5492fSlogin pub enum PosixTcpSocketOptions { 933cde5492fSlogin /// Turn off Nagle's algorithm. 934cde5492fSlogin NoDelay = 1, 935cde5492fSlogin /// Limit MSS. 936cde5492fSlogin MaxSegment = 2, 937cde5492fSlogin /// Never send partially complete segments. 938cde5492fSlogin Cork = 3, 939cde5492fSlogin /// Start keeplives after this period. 940cde5492fSlogin KeepIdle = 4, 941cde5492fSlogin /// Interval between keepalives. 942cde5492fSlogin KeepIntvl = 5, 943cde5492fSlogin /// Number of keepalives before death. 944cde5492fSlogin KeepCnt = 6, 945cde5492fSlogin /// Number of SYN retransmits. 946cde5492fSlogin Syncnt = 7, 947cde5492fSlogin /// Lifetime for orphaned FIN-WAIT-2 state. 948cde5492fSlogin Linger2 = 8, 949cde5492fSlogin /// Wake up listener only when data arrive. 950cde5492fSlogin DeferAccept = 9, 951cde5492fSlogin /// Bound advertised window 952cde5492fSlogin WindowClamp = 10, 953cde5492fSlogin /// Information about this connection. 954cde5492fSlogin Info = 11, 955cde5492fSlogin /// Block/reenable quick acks. 956cde5492fSlogin QuickAck = 12, 957cde5492fSlogin /// Congestion control algorithm. 958cde5492fSlogin Congestion = 13, 959cde5492fSlogin /// TCP MD5 Signature (RFC2385). 960cde5492fSlogin Md5Sig = 14, 961cde5492fSlogin /// Use linear timeouts for thin streams 962cde5492fSlogin ThinLinearTimeouts = 16, 963cde5492fSlogin /// Fast retrans. after 1 dupack. 964cde5492fSlogin ThinDupack = 17, 965cde5492fSlogin /// How long for loss retry before timeout. 966cde5492fSlogin UserTimeout = 18, 967cde5492fSlogin /// TCP sock is under repair right now. 968cde5492fSlogin Repair = 19, 969cde5492fSlogin RepairQueue = 20, 970cde5492fSlogin QueueSeq = 21, 971cde5492fSlogin RepairOptions = 22, 972cde5492fSlogin /// Enable FastOpen on listeners 973cde5492fSlogin FastOpen = 23, 974cde5492fSlogin Timestamp = 24, 975cde5492fSlogin /// Limit number of unsent bytes in write queue. 976cde5492fSlogin NotSentLowat = 25, 977cde5492fSlogin /// Get Congestion Control (optional) info. 978cde5492fSlogin CCInfo = 26, 979cde5492fSlogin /// Record SYN headers for new connections. 980cde5492fSlogin SaveSyn = 27, 981cde5492fSlogin /// Get SYN headers recorded for connection. 982cde5492fSlogin SavedSyn = 28, 983cde5492fSlogin /// Get/set window parameters. 984cde5492fSlogin RepairWindow = 29, 985cde5492fSlogin /// Attempt FastOpen with connect. 986cde5492fSlogin FastOpenConnect = 30, 987cde5492fSlogin /// Attach a ULP to a TCP connection. 988cde5492fSlogin ULP = 31, 989cde5492fSlogin /// TCP MD5 Signature with extensions. 990cde5492fSlogin Md5SigExt = 32, 991cde5492fSlogin /// Set the key for Fast Open(cookie). 992cde5492fSlogin FastOpenKey = 33, 993cde5492fSlogin /// Enable TFO without a TFO cookie. 994cde5492fSlogin FastOpenNoCookie = 34, 995cde5492fSlogin ZeroCopyReceive = 35, 996cde5492fSlogin /// Notify bytes available to read as a cmsg on read. 997cde5492fSlogin /// 与TCP_CM_INQ相同 998cde5492fSlogin INQ = 36, 999cde5492fSlogin /// delay outgoing packets by XX usec 1000cde5492fSlogin TxDelay = 37, 1001cde5492fSlogin } 1002cde5492fSlogin 1003cde5492fSlogin impl TryFrom<i32> for PosixTcpSocketOptions { 1004cde5492fSlogin type Error = SystemError; 1005cde5492fSlogin 1006cde5492fSlogin fn try_from(value: i32) -> Result<Self, Self::Error> { 1007cde5492fSlogin match <Self as FromPrimitive>::from_i32(value) { 1008cde5492fSlogin Some(p) => Ok(p), 1009cde5492fSlogin None => Err(SystemError::EINVAL), 1010cde5492fSlogin } 1011cde5492fSlogin } 1012cde5492fSlogin } 1013cde5492fSlogin 1014*b5b571e0SLoGin impl From<PosixTcpSocketOptions> for i32 { 1015*b5b571e0SLoGin fn from(val: PosixTcpSocketOptions) -> Self { 1016*b5b571e0SLoGin <PosixTcpSocketOptions as ToPrimitive>::to_i32(&val).unwrap() 1017cde5492fSlogin } 1018cde5492fSlogin } 1019