1ab5c8ca4Slogin use core::{ 2ab5c8ca4Slogin ffi::{c_char, c_int, c_void, CStr}, 3ab5c8ca4Slogin sync::atomic::{AtomicBool, Ordering}, 4ab5c8ca4Slogin }; 5ab5c8ca4Slogin 6971462beSGnoCiYeH use crate::{ 7*bf4a4899SLoGin arch::syscall::{ 8*bf4a4899SLoGin SYS_ACCESS, SYS_CHMOD, SYS_CLOCK_GETTIME, SYS_FACCESSAT, SYS_FACCESSAT2, SYS_FCHMOD, 9*bf4a4899SLoGin SYS_FCHMODAT, SYS_LSTAT, SYS_PRLIMIT64, SYS_READV, SYS_SYSINFO, SYS_UMASK, SYS_UNLINK, 10*bf4a4899SLoGin }, 11971462beSGnoCiYeH libs::{futex::constant::FutexFlag, rand::GRandFlags}, 120d9b7d92SLoGin process::{ 130d9b7d92SLoGin fork::KernelCloneArgs, 140d9b7d92SLoGin resource::{RLimit64, RUsage}, 150d9b7d92SLoGin }, 16971462beSGnoCiYeH }; 1740314b30SXiaoye Zheng 18676b8ef6SMork use num_traits::{FromPrimitive, ToPrimitive}; 19676b8ef6SMork 20ab5c8ca4Slogin use crate::{ 211496ba7bSLoGin arch::{cpu::cpu_reset, interrupt::TrapFrame, MMArch}, 222dbef785SGnoCiYeH driver::base::{block::SeekFrom, device::DeviceNumber}, 23ab5c8ca4Slogin filesystem::vfs::{ 246d81180bSLoGin fcntl::FcntlCommand, 25ab5c8ca4Slogin file::FileMode, 262dbef785SGnoCiYeH syscall::{ModeType, PosixKstat, SEEK_CUR, SEEK_END, SEEK_MAX, SEEK_SET}, 27ab5c8ca4Slogin MAX_PATHLEN, 28ab5c8ca4Slogin }, 291496ba7bSLoGin include::bindings::bindings::{PAGE_2M_SIZE, PAGE_4K_SIZE}, 30aa0367d6SLoGin kinfo, 3140fe15e0SLoGin libs::align::page_align_up, 32be63f3b2Shoumkh mm::{verify_area, MemoryManagementArch, VirtAddr}, 33ab5c8ca4Slogin net::syscall::SockAddr, 34971462beSGnoCiYeH process::{fork::CloneFlags, Pid}, 3536fd0130Shoumkh time::{ 3640fe15e0SLoGin syscall::{PosixTimeZone, PosixTimeval}, 3736fd0130Shoumkh TimeSpec, 3836fd0130Shoumkh }, 39ab5c8ca4Slogin }; 40ab5c8ca4Slogin 41*bf4a4899SLoGin use self::{ 42*bf4a4899SLoGin misc::SysInfo, 43*bf4a4899SLoGin user_access::{UserBufferReader, UserBufferWriter}, 44*bf4a4899SLoGin }; 454537ffb7SChiichen 46*bf4a4899SLoGin pub mod misc; 4740fe15e0SLoGin pub mod user_access; 4840fe15e0SLoGin 494454d1a2Slogin #[repr(i32)] 50676b8ef6SMork #[derive(Debug, FromPrimitive, ToPrimitive, PartialEq, Eq, Clone)] 5179a452ceShoumkh #[allow(dead_code, non_camel_case_types)] 524454d1a2Slogin pub enum SystemError { 5370a4e555SLoGin /// 操作不被允许 Operation not permitted. 5479a452ceShoumkh EPERM = 1, 5579a452ceShoumkh /// 没有指定的文件或目录 No such file or directory. 5679a452ceShoumkh ENOENT = 2, 574454d1a2Slogin /// 没有这样的进程 No such process. 5879a452ceShoumkh ESRCH = 3, 5979a452ceShoumkh /// 被中断的函数 Interrupted function. 6079a452ceShoumkh EINTR = 4, 6179a452ceShoumkh /// I/O错误 I/O error. 6279a452ceShoumkh EIO = 5, 6379a452ceShoumkh /// 没有这样的设备或地址 No such device or address. 6479a452ceShoumkh ENXIO = 6, 6579a452ceShoumkh /// 参数列表过长,或者在输出buffer中缺少空间 或者参数比系统内建的最大值要大 Argument list too long. 6679a452ceShoumkh E2BIG = 7, 6779a452ceShoumkh /// 可执行文件格式错误 Executable file format error 6879a452ceShoumkh ENOEXEC = 8, 6979a452ceShoumkh /// 错误的文件描述符 Bad file descriptor. 7079a452ceShoumkh EBADF = 9, 7179a452ceShoumkh /// 没有子进程 No child processes. 7279a452ceShoumkh ECHILD = 10, 7379a452ceShoumkh /// 资源不可用,请重试。 Resource unavailable, try again.(may be the same value as [EWOULDBLOCK]) 7479a452ceShoumkh /// 7579a452ceShoumkh /// 操作将被禁止 Operation would block.(may be the same value as [EAGAIN]). 7679a452ceShoumkh EAGAIN_OR_EWOULDBLOCK = 11, 7779a452ceShoumkh /// 没有足够的空间 Not enough space. 7879a452ceShoumkh ENOMEM = 12, 7979a452ceShoumkh /// 访问被拒绝 Permission denied 8079a452ceShoumkh EACCES = 13, 8179a452ceShoumkh /// 错误的地址 Bad address 8279a452ceShoumkh EFAULT = 14, 8379a452ceShoumkh /// 需要块设备 Block device required 8479a452ceShoumkh ENOTBLK = 15, 8579a452ceShoumkh /// 设备或资源忙 Device or resource busy. 8679a452ceShoumkh EBUSY = 16, 8779a452ceShoumkh /// 文件已存在 File exists. 8879a452ceShoumkh EEXIST = 17, 894454d1a2Slogin /// 跨设备连接 Cross-device link. 9079a452ceShoumkh EXDEV = 18, 9179a452ceShoumkh /// 没有指定的设备 No such device. 9279a452ceShoumkh ENODEV = 19, 9379a452ceShoumkh /// 不是目录 Not a directory. 9479a452ceShoumkh ENOTDIR = 20, 9579a452ceShoumkh /// 是一个目录 Is a directory 9679a452ceShoumkh EISDIR = 21, 9779a452ceShoumkh /// 不可用的参数 Invalid argument. 9879a452ceShoumkh EINVAL = 22, 9979a452ceShoumkh /// 系统中打开的文件过多 Too many files open in system. 10079a452ceShoumkh ENFILE = 23, 10179a452ceShoumkh /// 文件描述符的值过大 File descriptor value too large. 10279a452ceShoumkh EMFILE = 24, 10379a452ceShoumkh /// 不正确的I/O控制操作 Inappropriate I/O control operation. 10479a452ceShoumkh ENOTTY = 25, 10579a452ceShoumkh /// 文本文件忙 Text file busy. 10679a452ceShoumkh ETXTBSY = 26, 10779a452ceShoumkh /// 文件太大 File too large. 10879a452ceShoumkh EFBIG = 27, 10979a452ceShoumkh /// 设备上没有空间 No space left on device. 11079a452ceShoumkh ENOSPC = 28, 11179a452ceShoumkh /// 错误的寻道.当前文件是pipe,不允许seek请求 Invalid seek. 11279a452ceShoumkh ESPIPE = 29, 11379a452ceShoumkh /// 只读的文件系统 Read-only file system. 11479a452ceShoumkh EROFS = 30, 11579a452ceShoumkh /// 链接数过多 Too many links. 11679a452ceShoumkh EMLINK = 31, 11779a452ceShoumkh /// 断开的管道 Broken pipe. 11879a452ceShoumkh EPIPE = 32, 11979a452ceShoumkh /// 数学参数超出作用域 Mathematics argument out of domain of function. 12079a452ceShoumkh EDOM = 33, 12179a452ceShoumkh /// 结果过大 Result too large. 12279a452ceShoumkh ERANGE = 34, 12379a452ceShoumkh /// 资源死锁将要发生 Resource deadlock would occur. 12479a452ceShoumkh EDEADLK = 35, 12579a452ceShoumkh /// 文件名过长 Filename too long. 12679a452ceShoumkh ENAMETOOLONG = 36, 12779a452ceShoumkh /// 没有可用的锁 No locks available. 12879a452ceShoumkh ENOLCK = 37, 12979a452ceShoumkh /// 功能不支持 Function not supported. 13079a452ceShoumkh ENOSYS = 38, 13179a452ceShoumkh /// 目录非空 Directory not empty. 13279a452ceShoumkh ENOTEMPTY = 39, 13379a452ceShoumkh /// 符号链接级别过多 Too many levels of symbolic links. 13479a452ceShoumkh ELOOP = 40, 13579a452ceShoumkh /// 没有期待类型的消息 No message of the desired type. 13679a452ceShoumkh ENOMSG = 41, 13779a452ceShoumkh /// 标志符被移除 Identifier removed. 13879a452ceShoumkh EIDRM = 42, 13979a452ceShoumkh /// 通道号超出范围 Channel number out of range 14079a452ceShoumkh ECHRNG = 43, 14179a452ceShoumkh /// 二级不同步 Level 2 not synchronized 14279a452ceShoumkh EL2NSYNC = 44, 14379a452ceShoumkh /// 三级暂停 Level 3 halted 14479a452ceShoumkh EL3HLT = 45, 14579a452ceShoumkh /// 三级重置 Level 3 reset 14679a452ceShoumkh EL3RST = 46, 14779a452ceShoumkh /// 链接号超出范围 Link number out of range 14879a452ceShoumkh ELNRNG = 47, 14979a452ceShoumkh /// 未连接协议驱动程序 Protocol driver not attached 15079a452ceShoumkh EUNATCH = 48, 15179a452ceShoumkh /// 没有可用的CSI结构 No CSI structure available 15279a452ceShoumkh ENOCSI = 49, 15379a452ceShoumkh /// 二级暂停 Level 2 halted 15479a452ceShoumkh EL2HLT = 50, 15579a452ceShoumkh /// 无效交换 Invalid exchange 15679a452ceShoumkh EBADE = 51, 15779a452ceShoumkh /// 无效的请求描述符 Invalid request descriptor 15879a452ceShoumkh EBADR = 52, 15979a452ceShoumkh /// 交换满 Exchange full 16079a452ceShoumkh EXFULL = 53, 16179a452ceShoumkh /// 无阳极 No anode 16279a452ceShoumkh ENOANO = 54, 16379a452ceShoumkh /// 请求码无效 Invalid request code 16479a452ceShoumkh EBADRQC = 55, 16579a452ceShoumkh /// 无效插槽 Invalid slot 16679a452ceShoumkh EBADSLT = 56, 16779a452ceShoumkh /// 资源死锁 Resource deadlock would occur 16879a452ceShoumkh EDEADLOCK = 57, 16979a452ceShoumkh /// 错误的字体文件格式 Bad font file format 17079a452ceShoumkh EBFONT = 58, 17179a452ceShoumkh /// 不是STREAM Not a STREAM 17279a452ceShoumkh ENOSTR = 59, 17379a452ceShoumkh /// 队列头没有可读取的消息 No message is available on the STREAM head read queue. 17479a452ceShoumkh ENODATA = 60, 17579a452ceShoumkh /// 流式ioctl()超时 Stream ioctl() timeout 17679a452ceShoumkh ETIME = 61, 17779a452ceShoumkh /// 没有STREAM资源 No STREAM resources. 17879a452ceShoumkh ENOSR = 62, 17979a452ceShoumkh /// 机器不在网络上 Machine is not on the network 18079a452ceShoumkh ENONET = 63, 18179a452ceShoumkh /// 未安装软件包 Package not installed 18279a452ceShoumkh ENOPKG = 64, 18379a452ceShoumkh /// 远程对象 Object is remote 18479a452ceShoumkh EREMOTE = 65, 18579a452ceShoumkh /// 保留 Reserved. 18679a452ceShoumkh ENOLINK = 66, 18779a452ceShoumkh /// 外设错误 Advertise error. 18879a452ceShoumkh EADV = 67, 18979a452ceShoumkh /// 安装错误 Srmount error 19079a452ceShoumkh ESRMNT = 68, 19179a452ceShoumkh /// 发送时发生通信错误 Communication error on send 19279a452ceShoumkh ECOMM = 69, 19379a452ceShoumkh /// 协议错误 Protocol error. 19479a452ceShoumkh EPROTO = 70, 19579a452ceShoumkh /// 保留使用 Reserved. 19679a452ceShoumkh EMULTIHOP = 71, 19779a452ceShoumkh /// RFS特定错误 RFS specific error 19879a452ceShoumkh EDOTDOT = 72, 19979a452ceShoumkh /// 错误的消息 Bad message. 20079a452ceShoumkh EBADMSG = 73, 20179a452ceShoumkh /// 数值过大,产生溢出 Value too large to be stored in data type. 20279a452ceShoumkh EOVERFLOW = 74, 20379a452ceShoumkh /// 名称在网络上不是唯一的 Name not unique on network 20479a452ceShoumkh ENOTUNIQ = 75, 20579a452ceShoumkh /// 处于不良状态的文件描述符 File descriptor in bad state 20679a452ceShoumkh EBADFD = 76, 20779a452ceShoumkh /// 远程地址已更改 Remote address changed 20879a452ceShoumkh EREMCHG = 77, 20979a452ceShoumkh /// 无法访问所需的共享库 Can not access a needed shared library 21079a452ceShoumkh ELIBACC = 78, 21179a452ceShoumkh /// 访问损坏的共享库 Accessing a corrupted shared library 21279a452ceShoumkh ELIBBAD = 79, 21379a452ceShoumkh /// a. out中的.lib部分已损坏 .lib section in a.out corrupted 21479a452ceShoumkh ELIBSCN = 80, 21579a452ceShoumkh /// 尝试链接太多共享库 Attempting to link in too many shared libraries 21679a452ceShoumkh ELIBMAX = 81, 21779a452ceShoumkh /// 无法直接执行共享库 Cannot exec a shared library directly 21879a452ceShoumkh ELIBEXEC = 82, 21979a452ceShoumkh /// 不合法的字符序列 Illegal byte sequence. 22079a452ceShoumkh EILSEQ = 83, 22179a452ceShoumkh /// 中断的系统调用应该重新启动 Interrupted system call should be restarted 22279a452ceShoumkh ERESTART = 84, 22379a452ceShoumkh /// 流管道错误 Streams pipe error 22479a452ceShoumkh ESTRPIPE = 85, 22579a452ceShoumkh /// 用户太多 Too many users 22679a452ceShoumkh EUSERS = 86, 22779a452ceShoumkh /// 不是一个套接字 Not a socket. 22879a452ceShoumkh ENOTSOCK = 87, 22979a452ceShoumkh /// 需要目标地址 Destination address required. 23079a452ceShoumkh EDESTADDRREQ = 88, 23179a452ceShoumkh /// 消息过大 Message too large. 23279a452ceShoumkh EMSGSIZE = 89, 23379a452ceShoumkh /// 对于套接字而言,错误的协议 Protocol wrong type for socket. 23479a452ceShoumkh EPROTOTYPE = 90, 23579a452ceShoumkh /// 协议不可用 Protocol not available. 23679a452ceShoumkh ENOPROTOOPT = 91, 23779a452ceShoumkh /// 协议不被支持 Protocol not supported. 23879a452ceShoumkh EPROTONOSUPPORT = 92, 23979a452ceShoumkh /// 不支持套接字类型 Socket type not supported 24079a452ceShoumkh ESOCKTNOSUPPORT = 93, 24179a452ceShoumkh /// 套接字不支持该操作 Operation not supported on socket (may be the same value as [ENOTSUP]). 24279a452ceShoumkh /// 24379a452ceShoumkh /// 不被支持 Not supported (may be the same value as [EOPNOTSUPP]). 24479a452ceShoumkh EOPNOTSUPP_OR_ENOTSUP = 94, 24579a452ceShoumkh /// 不支持协议系列 Protocol family not supported 24679a452ceShoumkh EPFNOSUPPORT = 95, 24779a452ceShoumkh /// 地址family不支持 Address family not supported. 24879a452ceShoumkh EAFNOSUPPORT = 96, 24979a452ceShoumkh /// 地址正在被使用 Address in use. 25079a452ceShoumkh EADDRINUSE = 97, 25179a452ceShoumkh /// 地址不可用 Address not available. 25279a452ceShoumkh EADDRNOTAVAIL = 98, 25379a452ceShoumkh /// 网络已关闭 Network is down. 25479a452ceShoumkh ENETDOWN = 99, 25579a452ceShoumkh /// 网络不可达 Network unreachable. 25679a452ceShoumkh ENETUNREACH = 100, 25779a452ceShoumkh /// 网络连接已断开 Connection aborted by network. 25879a452ceShoumkh ENETRESET = 101, 25979a452ceShoumkh /// 连接已断开 Connection aborted. 26079a452ceShoumkh ECONNABORTED = 102, 26179a452ceShoumkh /// 连接被重置 Connection reset. 26279a452ceShoumkh ECONNRESET = 103, 26379a452ceShoumkh /// 缓冲区空间不足 No buffer space available. 26479a452ceShoumkh ENOBUFS = 104, 26579a452ceShoumkh /// 套接字已连接 Socket is connected. 26679a452ceShoumkh EISCONN = 105, 26779a452ceShoumkh /// 套接字未连接 The socket is not connected. 26879a452ceShoumkh ENOTCONN = 106, 26979a452ceShoumkh /// 传输端点关闭后无法发送 Cannot send after transport endpoint shutdown 27079a452ceShoumkh ESHUTDOWN = 107, 27179a452ceShoumkh /// 引用太多:无法拼接 Too many references: cannot splice 27279a452ceShoumkh ETOOMANYREFS = 108, 27379a452ceShoumkh /// 连接超时 Connection timed out. 27479a452ceShoumkh ETIMEDOUT = 109, 27579a452ceShoumkh /// 连接被拒绝 Connection refused. 27679a452ceShoumkh ECONNREFUSED = 110, 27779a452ceShoumkh /// 主机已关闭 Host is down 27879a452ceShoumkh EHOSTDOWN = 111, 27979a452ceShoumkh /// 主机不可达 Host is unreachable. 28079a452ceShoumkh EHOSTUNREACH = 112, 28179a452ceShoumkh /// 连接已经在处理 Connection already in progress. 28279a452ceShoumkh EALREADY = 113, 28379a452ceShoumkh /// 操作正在处理 Operation in progress. 28479a452ceShoumkh EINPROGRESS = 114, 28579a452ceShoumkh /// 保留 Reserved. 28679a452ceShoumkh ESTALE = 115, 28779a452ceShoumkh /// 结构需要清理 Structure needs cleaning 28879a452ceShoumkh EUCLEAN = 116, 28979a452ceShoumkh /// 不是XENIX命名类型文件 Not a XENIX named type file 29079a452ceShoumkh ENOTNAM = 117, 29179a452ceShoumkh /// 没有可用的XENIX信号量 No XENIX semaphores available 29279a452ceShoumkh ENAVAIL = 118, 29379a452ceShoumkh /// 是命名类型文件 Is a named type file 29479a452ceShoumkh EISNAM = 119, 29579a452ceShoumkh /// 远程I/O错误 Remote I/O error 29679a452ceShoumkh EREMOTEIO = 120, 29779a452ceShoumkh /// 保留使用 Reserved 29879a452ceShoumkh EDQUOT = 121, 29979a452ceShoumkh /// 没有找到媒介 No medium found 30079a452ceShoumkh ENOMEDIUM = 122, 30179a452ceShoumkh /// 介质类型错误 Wrong medium type 30279a452ceShoumkh EMEDIUMTYPE = 123, 30379a452ceShoumkh /// 操作被取消 Operation canceled. 30479a452ceShoumkh ECANCELED = 124, 30579a452ceShoumkh /// 所需的密钥不可用 Required key not available 30679a452ceShoumkh ENOKEY = 125, 30779a452ceShoumkh /// 密钥已过期 Key has expired 30879a452ceShoumkh EKEYEXPIRED = 126, 30979a452ceShoumkh /// 密钥已被撤销 Key has been revoked 31079a452ceShoumkh EKEYREVOKED = 127, 31179a452ceShoumkh /// 密钥被服务拒绝 Key has been revoked 31279a452ceShoumkh EKEYREJECTED = 128, 31379a452ceShoumkh /// 之前的拥有者挂了 Previous owner died. 31479a452ceShoumkh EOWNERDEAD = 129, 31579a452ceShoumkh /// 状态不可恢复 State not recoverable. 31679a452ceShoumkh ENOTRECOVERABLE = 130, 31740314b30SXiaoye Zheng // VMX on 虚拟化开启指令出错 31840314b30SXiaoye Zheng EVMXONFailed = 131, 31940314b30SXiaoye Zheng // VMX off 虚拟化关闭指令出错 32040314b30SXiaoye Zheng EVMXOFFFailed = 132, 32140314b30SXiaoye Zheng // VMX VMWRITE 写入虚拟化VMCS内存出错 32240314b30SXiaoye Zheng EVMWRITEFailed = 133, 32340314b30SXiaoye Zheng EVMREADFailed = 134, 32440314b30SXiaoye Zheng EVMPRTLDFailed = 135, 32540314b30SXiaoye Zheng EVMLAUNCHFailed = 136, 32640314b30SXiaoye Zheng KVM_HVA_ERR_BAD = 137, 327*bf4a4899SLoGin 328*bf4a4899SLoGin // === 以下错误码不应该被用户态程序使用 === 329*bf4a4899SLoGin ERESTARTSYS = 512, 3304454d1a2Slogin } 331676b8ef6SMork 332676b8ef6SMork impl SystemError { 333676b8ef6SMork /// @brief 把posix错误码转换为系统错误枚举类型。 334676b8ef6SMork pub fn from_posix_errno(errno: i32) -> Option<SystemError> { 335676b8ef6SMork // posix 错误码是小于0的 336676b8ef6SMork if errno >= 0 { 337676b8ef6SMork return None; 338676b8ef6SMork } 339676b8ef6SMork return <Self as FromPrimitive>::from_i32(-errno); 340676b8ef6SMork } 341676b8ef6SMork 342676b8ef6SMork /// @brief 把系统错误枚举类型转换为负数posix错误码。 343676b8ef6SMork pub fn to_posix_errno(&self) -> i32 { 344676b8ef6SMork return -<Self as ToPrimitive>::to_i32(self).unwrap(); 345676b8ef6SMork } 346676b8ef6SMork } 347ab5c8ca4Slogin 348ab5c8ca4Slogin // 定义系统调用号 349ad1d649eSGnoCiYeH pub const SYS_READ: usize = 0; 350ad1d649eSGnoCiYeH pub const SYS_WRITE: usize = 1; 351ab5c8ca4Slogin pub const SYS_OPEN: usize = 2; 352ab5c8ca4Slogin pub const SYS_CLOSE: usize = 3; 353ad1d649eSGnoCiYeH pub const SYS_STAT: usize = 4; 354ad1d649eSGnoCiYeH pub const SYS_FSTAT: usize = 5; 355ab5c8ca4Slogin 356ad1d649eSGnoCiYeH pub const SYS_POLL: usize = 7; 357ad1d649eSGnoCiYeH pub const SYS_LSEEK: usize = 8; 358ad1d649eSGnoCiYeH pub const SYS_MMAP: usize = 9; 359ad1d649eSGnoCiYeH pub const SYS_MPROTECT: usize = 10; 360c47fe904SLoGin 361ad1d649eSGnoCiYeH pub const SYS_MUNMAP: usize = 11; 362ad1d649eSGnoCiYeH pub const SYS_BRK: usize = 12; 363ad1d649eSGnoCiYeH pub const SYS_SIGACTION: usize = 13; 364ad1d649eSGnoCiYeH pub const SYS_RT_SIGPROCMASK: usize = 14; 365ad1d649eSGnoCiYeH pub const SYS_RT_SIGRETURN: usize = 15; 366c47fe904SLoGin 367ad1d649eSGnoCiYeH pub const SYS_IOCTL: usize = 16; 368ad1d649eSGnoCiYeH 369ad1d649eSGnoCiYeH pub const SYS_WRITEV: usize = 20; 370ad1d649eSGnoCiYeH 37104babc3fSMemoryShore pub const SYS_MADVISE: usize = 28; 37204babc3fSMemoryShore 373ad1d649eSGnoCiYeH pub const SYS_DUP: usize = 32; 374ad1d649eSGnoCiYeH pub const SYS_DUP2: usize = 33; 375ad1d649eSGnoCiYeH 376ad1d649eSGnoCiYeH pub const SYS_NANOSLEEP: usize = 35; 377ad1d649eSGnoCiYeH 378ad1d649eSGnoCiYeH pub const SYS_GETPID: usize = 39; 379ad1d649eSGnoCiYeH 380ad1d649eSGnoCiYeH pub const SYS_SOCKET: usize = 41; 381ad1d649eSGnoCiYeH pub const SYS_CONNECT: usize = 42; 382ad1d649eSGnoCiYeH pub const SYS_ACCEPT: usize = 43; 383ad1d649eSGnoCiYeH pub const SYS_SENDTO: usize = 44; 384ad1d649eSGnoCiYeH pub const SYS_RECVFROM: usize = 45; 385ad1d649eSGnoCiYeH 386ad1d649eSGnoCiYeH pub const SYS_RECVMSG: usize = 47; 387ad1d649eSGnoCiYeH pub const SYS_SHUTDOWN: usize = 48; 388ad1d649eSGnoCiYeH pub const SYS_BIND: usize = 49; 389ad1d649eSGnoCiYeH pub const SYS_LISTEN: usize = 50; 390ad1d649eSGnoCiYeH pub const SYS_GETSOCKNAME: usize = 51; 391ad1d649eSGnoCiYeH pub const SYS_GETPEERNAME: usize = 52; 392971462beSGnoCiYeH pub const SYS_SOCKET_PAIR: usize = 53; 393ad1d649eSGnoCiYeH pub const SYS_SETSOCKOPT: usize = 54; 394ad1d649eSGnoCiYeH pub const SYS_GETSOCKOPT: usize = 55; 395ad1d649eSGnoCiYeH 396ad1d649eSGnoCiYeH pub const SYS_CLONE: usize = 56; 397ad1d649eSGnoCiYeH pub const SYS_FORK: usize = 57; 398ad1d649eSGnoCiYeH pub const SYS_VFORK: usize = 58; 399ad1d649eSGnoCiYeH pub const SYS_EXECVE: usize = 59; 400ad1d649eSGnoCiYeH pub const SYS_EXIT: usize = 60; 401ad1d649eSGnoCiYeH pub const SYS_WAIT4: usize = 61; 402ad1d649eSGnoCiYeH pub const SYS_KILL: usize = 62; 403ad1d649eSGnoCiYeH 404ad1d649eSGnoCiYeH pub const SYS_FCNTL: usize = 72; 405ad1d649eSGnoCiYeH 406ad1d649eSGnoCiYeH pub const SYS_FTRUNCATE: usize = 77; 407ad1d649eSGnoCiYeH pub const SYS_GET_DENTS: usize = 78; 408ad1d649eSGnoCiYeH 409ad1d649eSGnoCiYeH pub const SYS_GETCWD: usize = 79; 410ad1d649eSGnoCiYeH 411ad1d649eSGnoCiYeH pub const SYS_CHDIR: usize = 80; 412ad1d649eSGnoCiYeH 413ad1d649eSGnoCiYeH pub const SYS_MKDIR: usize = 83; 414ad1d649eSGnoCiYeH 415709498caSLoGin pub const SYS_READLINK: usize = 89; 416709498caSLoGin 417ad1d649eSGnoCiYeH pub const SYS_GETTIMEOFDAY: usize = 96; 418be8cdf4bSLoGin pub const SYS_GETRUSAGE: usize = 98; 419ad1d649eSGnoCiYeH 42002e249f3SLoGin pub const SYS_GETUID: usize = 102; 42102e249f3SLoGin pub const SYS_SYSLOG: usize = 103; 42202e249f3SLoGin pub const SYS_GETGID: usize = 104; 42302e249f3SLoGin pub const SYS_SETUID: usize = 105; 42402e249f3SLoGin 42502e249f3SLoGin pub const SYS_SETGID: usize = 106; 42602e249f3SLoGin pub const SYS_GETEUID: usize = 107; 42702e249f3SLoGin pub const SYS_GETEGID: usize = 108; 42802e249f3SLoGin 429c47fe904SLoGin pub const SYS_GETPPID: usize = 110; 430c47fe904SLoGin pub const SYS_GETPGID: usize = 121; 431ad1d649eSGnoCiYeH 432c47fe904SLoGin pub const SYS_SIGALTSTACK: usize = 131; 433c47fe904SLoGin pub const SYS_MKNOD: usize = 133; 434c47fe904SLoGin 435ad1d649eSGnoCiYeH pub const SYS_ARCH_PRCTL: usize = 158; 436ad1d649eSGnoCiYeH 437ad1d649eSGnoCiYeH pub const SYS_REBOOT: usize = 169; 438ad1d649eSGnoCiYeH 439393f6915SLoGin pub const SYS_GETTID: usize = 186; 440393f6915SLoGin 441ad1d649eSGnoCiYeH #[allow(dead_code)] 442ad1d649eSGnoCiYeH pub const SYS_TKILL: usize = 200; 443ad1d649eSGnoCiYeH 444ad1d649eSGnoCiYeH #[allow(dead_code)] 445ad1d649eSGnoCiYeH pub const SYS_FUTEX: usize = 202; 446ad1d649eSGnoCiYeH 447ad1d649eSGnoCiYeH pub const SYS_GET_DENTS_64: usize = 217; 448ad1d649eSGnoCiYeH #[allow(dead_code)] 449ad1d649eSGnoCiYeH pub const SYS_SET_TID_ADDR: usize = 218; 450ad1d649eSGnoCiYeH 45116033951SGnoCiYeH pub const SYS_EXIT_GROUP: usize = 231; 45216033951SGnoCiYeH 453ad1d649eSGnoCiYeH pub const SYS_UNLINK_AT: usize = 263; 454ad1d649eSGnoCiYeH 455709498caSLoGin pub const SYS_READLINK_AT: usize = 267; 456709498caSLoGin 457c47fe904SLoGin pub const SYS_ACCEPT4: usize = 288; 458c47fe904SLoGin 459ad1d649eSGnoCiYeH pub const SYS_PIPE: usize = 293; 460ad1d649eSGnoCiYeH 461ad1d649eSGnoCiYeH #[allow(dead_code)] 462ad1d649eSGnoCiYeH pub const SYS_GET_RANDOM: usize = 318; 463ad1d649eSGnoCiYeH 464ad1d649eSGnoCiYeH // 与linux不一致的调用,在linux基础上累加 465ad1d649eSGnoCiYeH pub const SYS_PUT_STRING: usize = 100000; 466ad1d649eSGnoCiYeH pub const SYS_SBRK: usize = 100001; 467ab5c8ca4Slogin /// todo: 该系统调用与Linux不一致,将来需要删除该系统调用!!! 删的时候记得改C版本的libc 468ad1d649eSGnoCiYeH pub const SYS_CLOCK: usize = 100002; 469ad1d649eSGnoCiYeH pub const SYS_SCHED: usize = 100003; 47040314b30SXiaoye Zheng 471ab5c8ca4Slogin #[derive(Debug)] 472ab5c8ca4Slogin pub struct Syscall; 473ab5c8ca4Slogin 474ab5c8ca4Slogin extern "C" { 475ab5c8ca4Slogin fn do_put_string(s: *const u8, front_color: u32, back_color: u32) -> usize; 476ab5c8ca4Slogin } 477ab5c8ca4Slogin 478ab5c8ca4Slogin #[no_mangle] 479ab5c8ca4Slogin pub extern "C" fn syscall_init() -> i32 { 480ab5c8ca4Slogin kinfo!("Initializing syscall..."); 481ab5c8ca4Slogin Syscall::init().expect("syscall init failed"); 482ab5c8ca4Slogin kinfo!("Syscall init successfully!"); 483ab5c8ca4Slogin return 0; 484ab5c8ca4Slogin } 485ab5c8ca4Slogin 486ab5c8ca4Slogin impl Syscall { 487ab5c8ca4Slogin /// 初始化系统调用 488ab5c8ca4Slogin pub fn init() -> Result<(), SystemError> { 489ab5c8ca4Slogin static INIT_FLAG: AtomicBool = AtomicBool::new(false); 490ab5c8ca4Slogin let prev = INIT_FLAG.swap(true, Ordering::SeqCst); 491ab5c8ca4Slogin if prev { 492ab5c8ca4Slogin panic!("Cannot initialize syscall more than once!"); 493ab5c8ca4Slogin } 494ab5c8ca4Slogin return crate::arch::syscall::arch_syscall_init(); 495ab5c8ca4Slogin } 496ab5c8ca4Slogin /// @brief 系统调用分发器,用于分发系统调用。 497ab5c8ca4Slogin /// 498ab5c8ca4Slogin /// 这个函数内,需要根据系统调用号,调用对应的系统调用处理函数。 499ab5c8ca4Slogin /// 并且,对于用户态传入的指针参数,需要在本函数内进行越界检查,防止访问到内核空间。 5009e9ffedfSPlucky923 pub fn handle( 5019e9ffedfSPlucky923 syscall_num: usize, 5029e9ffedfSPlucky923 args: &[usize], 5039e9ffedfSPlucky923 frame: &mut TrapFrame, 5049e9ffedfSPlucky923 ) -> Result<usize, SystemError> { 505ab5c8ca4Slogin let r = match syscall_num { 506ab5c8ca4Slogin SYS_PUT_STRING => { 507ab5c8ca4Slogin Self::put_string(args[0] as *const u8, args[1] as u32, args[2] as u32) 508ab5c8ca4Slogin } 509ab5c8ca4Slogin SYS_OPEN => { 510ab5c8ca4Slogin let path: &CStr = unsafe { CStr::from_ptr(args[0] as *const c_char) }; 511ab5c8ca4Slogin let path: Result<&str, core::str::Utf8Error> = path.to_str(); 512ab5c8ca4Slogin let res = if path.is_err() { 513ab5c8ca4Slogin Err(SystemError::EINVAL) 514ab5c8ca4Slogin } else { 515ab5c8ca4Slogin let path: &str = path.unwrap(); 51634e6d6c8Syuyi2439 517ab5c8ca4Slogin let flags = args[1]; 518ab5c8ca4Slogin let open_flags: FileMode = FileMode::from_bits_truncate(flags as u32); 519*bf4a4899SLoGin Self::open(path, open_flags, true) 520ab5c8ca4Slogin }; 521ab5c8ca4Slogin res 522ab5c8ca4Slogin } 523ab5c8ca4Slogin SYS_CLOSE => { 524ab5c8ca4Slogin let fd = args[0]; 52534e6d6c8Syuyi2439 52634e6d6c8Syuyi2439 let res = Self::close(fd); 52734e6d6c8Syuyi2439 52834e6d6c8Syuyi2439 res 529ab5c8ca4Slogin } 530ab5c8ca4Slogin SYS_READ => { 531ab5c8ca4Slogin let fd = args[0] as i32; 532ab5c8ca4Slogin let buf_vaddr = args[1]; 533ab5c8ca4Slogin let len = args[2]; 5349e9ffedfSPlucky923 let from_user = frame.from_user(); 5359e9ffedfSPlucky923 let mut user_buffer_writer = 5369e9ffedfSPlucky923 UserBufferWriter::new(buf_vaddr as *mut u8, len, from_user)?; 5376d81180bSLoGin 5389e9ffedfSPlucky923 let user_buf = user_buffer_writer.buffer(0)?; 5399e9ffedfSPlucky923 let res = Self::read(fd, user_buf); 540ab5c8ca4Slogin res 541ab5c8ca4Slogin } 542ab5c8ca4Slogin SYS_WRITE => { 543ab5c8ca4Slogin let fd = args[0] as i32; 544ab5c8ca4Slogin let buf_vaddr = args[1]; 545ab5c8ca4Slogin let len = args[2]; 5469e9ffedfSPlucky923 let from_user = frame.from_user(); 5479e9ffedfSPlucky923 let user_buffer_reader = 5489e9ffedfSPlucky923 UserBufferReader::new(buf_vaddr as *const u8, len, from_user)?; 5496d81180bSLoGin 5509e9ffedfSPlucky923 let user_buf = user_buffer_reader.read_from_user(0)?; 5519e9ffedfSPlucky923 let res = Self::write(fd, user_buf); 552ab5c8ca4Slogin res 553ab5c8ca4Slogin } 554ab5c8ca4Slogin 555ab5c8ca4Slogin SYS_LSEEK => { 556ab5c8ca4Slogin let fd = args[0] as i32; 557ab5c8ca4Slogin let offset = args[1] as i64; 558ab5c8ca4Slogin let whence = args[2] as u32; 559ab5c8ca4Slogin 560ab5c8ca4Slogin let w = match whence { 561ab5c8ca4Slogin SEEK_SET => Ok(SeekFrom::SeekSet(offset)), 562ab5c8ca4Slogin SEEK_CUR => Ok(SeekFrom::SeekCurrent(offset)), 563ab5c8ca4Slogin SEEK_END => Ok(SeekFrom::SeekEnd(offset)), 564ab5c8ca4Slogin SEEK_MAX => Ok(SeekFrom::SeekEnd(0)), 565ab5c8ca4Slogin _ => Err(SystemError::EINVAL), 5669e9ffedfSPlucky923 }?; 567ab5c8ca4Slogin 568ab5c8ca4Slogin Self::lseek(fd, w) 569ab5c8ca4Slogin } 57040314b30SXiaoye Zheng SYS_IOCTL => { 57140314b30SXiaoye Zheng let fd = args[0]; 57240314b30SXiaoye Zheng let cmd = args[1]; 57340314b30SXiaoye Zheng let data = args[2]; 57440314b30SXiaoye Zheng Self::ioctl(fd, cmd as u32, data) 57540314b30SXiaoye Zheng } 576ab5c8ca4Slogin 5771496ba7bSLoGin SYS_FORK => Self::fork(frame), 5781496ba7bSLoGin SYS_VFORK => Self::vfork(frame), 5791496ba7bSLoGin 580ab5c8ca4Slogin SYS_BRK => { 58140fe15e0SLoGin let new_brk = VirtAddr::new(args[0]); 58240fe15e0SLoGin Self::brk(new_brk).map(|vaddr| vaddr.data()) 583ab5c8ca4Slogin } 584ab5c8ca4Slogin 585ab5c8ca4Slogin SYS_SBRK => { 586ab5c8ca4Slogin let increment = args[0] as isize; 5871496ba7bSLoGin Self::sbrk(increment).map(|vaddr: VirtAddr| vaddr.data()) 588ab5c8ca4Slogin } 589ab5c8ca4Slogin 590ab5c8ca4Slogin SYS_REBOOT => Self::reboot(), 591ab5c8ca4Slogin 592ab5c8ca4Slogin SYS_CHDIR => { 593ab5c8ca4Slogin // Closure for checking arguments 594ab5c8ca4Slogin let chdir_check = |arg0: usize| { 595ab5c8ca4Slogin if arg0 == 0 { 596ab5c8ca4Slogin return Err(SystemError::EFAULT); 597ab5c8ca4Slogin } 598ab5c8ca4Slogin let path_ptr = arg0 as *const c_char; 599be63f3b2Shoumkh let virt_addr = VirtAddr::new(path_ptr as usize); 600ab5c8ca4Slogin // 权限校验 601ab5c8ca4Slogin if path_ptr.is_null() 6021496ba7bSLoGin || (frame.from_user() 6031496ba7bSLoGin && verify_area(virt_addr, PAGE_2M_SIZE as usize).is_err()) 604ab5c8ca4Slogin { 605ab5c8ca4Slogin return Err(SystemError::EINVAL); 606ab5c8ca4Slogin } 607ab5c8ca4Slogin let dest_path: &CStr = unsafe { CStr::from_ptr(path_ptr) }; 608ab5c8ca4Slogin let dest_path: &str = dest_path.to_str().map_err(|_| SystemError::EINVAL)?; 609ab5c8ca4Slogin if dest_path.len() == 0 { 610ab5c8ca4Slogin return Err(SystemError::EINVAL); 6111496ba7bSLoGin } else if dest_path.len() > MAX_PATHLEN as usize { 612ab5c8ca4Slogin return Err(SystemError::ENAMETOOLONG); 613ab5c8ca4Slogin } 614ab5c8ca4Slogin 615ab5c8ca4Slogin return Ok(dest_path); 616ab5c8ca4Slogin }; 617ab5c8ca4Slogin 6189e9ffedfSPlucky923 let r = chdir_check(args[0])?; 6199e9ffedfSPlucky923 Self::chdir(r) 620ab5c8ca4Slogin } 621ab5c8ca4Slogin 622ad1d649eSGnoCiYeH SYS_GET_DENTS | SYS_GET_DENTS_64 => { 623ab5c8ca4Slogin let fd = args[0] as i32; 62434e6d6c8Syuyi2439 625ab5c8ca4Slogin let buf_vaddr = args[1]; 626ab5c8ca4Slogin let len = args[2]; 627f5df0e79SLoGin let virt_addr: VirtAddr = VirtAddr::new(buf_vaddr); 628ab5c8ca4Slogin // 判断缓冲区是否来自用户态,进行权限校验 6291496ba7bSLoGin let res = if frame.from_user() && verify_area(virt_addr, len as usize).is_err() { 630ab5c8ca4Slogin // 来自用户态,而buffer在内核态,这样的操作不被允许 631ab5c8ca4Slogin Err(SystemError::EPERM) 632ab5c8ca4Slogin } else if buf_vaddr == 0 { 633ab5c8ca4Slogin Err(SystemError::EFAULT) 634ab5c8ca4Slogin } else { 635ab5c8ca4Slogin let buf: &mut [u8] = unsafe { 636ab5c8ca4Slogin core::slice::from_raw_parts_mut::<'static, u8>(buf_vaddr as *mut u8, len) 637ab5c8ca4Slogin }; 638ab5c8ca4Slogin Self::getdents(fd, buf) 639ab5c8ca4Slogin }; 640ab5c8ca4Slogin 641ab5c8ca4Slogin res 642ab5c8ca4Slogin } 643ab5c8ca4Slogin 644ab5c8ca4Slogin SYS_EXECVE => { 645ab5c8ca4Slogin let path_ptr = args[0]; 646ab5c8ca4Slogin let argv_ptr = args[1]; 647ab5c8ca4Slogin let env_ptr = args[2]; 648be63f3b2Shoumkh let virt_path_ptr = VirtAddr::new(path_ptr); 649be63f3b2Shoumkh let virt_argv_ptr = VirtAddr::new(argv_ptr); 650be63f3b2Shoumkh let virt_env_ptr = VirtAddr::new(env_ptr); 651ab5c8ca4Slogin // 权限校验 6521496ba7bSLoGin if frame.from_user() 6531496ba7bSLoGin && (verify_area(virt_path_ptr, MAX_PATHLEN as usize).is_err() 654be63f3b2Shoumkh || verify_area(virt_argv_ptr, PAGE_4K_SIZE as usize).is_err()) 655be63f3b2Shoumkh || verify_area(virt_env_ptr, PAGE_4K_SIZE as usize).is_err() 656ab5c8ca4Slogin { 657ab5c8ca4Slogin Err(SystemError::EFAULT) 658ab5c8ca4Slogin } else { 659ab5c8ca4Slogin Self::execve( 6601496ba7bSLoGin path_ptr as *const u8, 6611496ba7bSLoGin argv_ptr as *const *const u8, 6621496ba7bSLoGin env_ptr as *const *const u8, 6631496ba7bSLoGin frame, 664ab5c8ca4Slogin ) 6651496ba7bSLoGin .map(|_| 0) 666ab5c8ca4Slogin } 667ab5c8ca4Slogin } 668ab5c8ca4Slogin SYS_WAIT4 => { 669*bf4a4899SLoGin let pid = args[0] as i32; 6701496ba7bSLoGin let wstatus = args[1] as *mut i32; 671ab5c8ca4Slogin let options = args[2] as c_int; 672ab5c8ca4Slogin let rusage = args[3] as *mut c_void; 673ab5c8ca4Slogin // 权限校验 674ab5c8ca4Slogin // todo: 引入rusage之后,更正以下权限校验代码中,rusage的大小 675*bf4a4899SLoGin Self::wait4(pid.into(), wstatus, options, rusage) 676ab5c8ca4Slogin } 677ab5c8ca4Slogin 678ab5c8ca4Slogin SYS_EXIT => { 679ab5c8ca4Slogin let exit_code = args[0]; 680ab5c8ca4Slogin Self::exit(exit_code) 681ab5c8ca4Slogin } 682ab5c8ca4Slogin SYS_MKDIR => { 683ab5c8ca4Slogin let path_ptr = args[0] as *const c_char; 684ab5c8ca4Slogin let mode = args[1]; 685be63f3b2Shoumkh let virt_path_ptr = VirtAddr::new(path_ptr as usize); 686ab5c8ca4Slogin let security_check = || { 687ab5c8ca4Slogin if path_ptr.is_null() 6881496ba7bSLoGin || (frame.from_user() 6891496ba7bSLoGin && verify_area(virt_path_ptr, PAGE_2M_SIZE as usize).is_err()) 690ab5c8ca4Slogin { 691ab5c8ca4Slogin return Err(SystemError::EINVAL); 692ab5c8ca4Slogin } 693ab5c8ca4Slogin let path: &CStr = unsafe { CStr::from_ptr(path_ptr) }; 694ab5c8ca4Slogin let path: &str = path.to_str().map_err(|_| SystemError::EINVAL)?.trim(); 695ab5c8ca4Slogin 696ab5c8ca4Slogin if path == "" { 697ab5c8ca4Slogin return Err(SystemError::EINVAL); 698ab5c8ca4Slogin } 699ab5c8ca4Slogin return Ok(path); 700ab5c8ca4Slogin }; 701ab5c8ca4Slogin 702ab5c8ca4Slogin let path = security_check(); 703ab5c8ca4Slogin if path.is_err() { 704ab5c8ca4Slogin Err(path.unwrap_err()) 705ab5c8ca4Slogin } else { 706ab5c8ca4Slogin Self::mkdir(path.unwrap(), mode) 707ab5c8ca4Slogin } 708ab5c8ca4Slogin } 709ab5c8ca4Slogin 710ab5c8ca4Slogin SYS_NANOSLEEP => { 711ab5c8ca4Slogin let req = args[0] as *const TimeSpec; 712ab5c8ca4Slogin let rem = args[1] as *mut TimeSpec; 713be63f3b2Shoumkh let virt_req = VirtAddr::new(req as usize); 714be63f3b2Shoumkh let virt_rem = VirtAddr::new(rem as usize); 7151496ba7bSLoGin if frame.from_user() 716be63f3b2Shoumkh && (verify_area(virt_req, core::mem::size_of::<TimeSpec>() as usize).is_err() 717be63f3b2Shoumkh || verify_area(virt_rem, core::mem::size_of::<TimeSpec>() as usize) 718be63f3b2Shoumkh .is_err()) 719ab5c8ca4Slogin { 720ab5c8ca4Slogin Err(SystemError::EFAULT) 721ab5c8ca4Slogin } else { 722ab5c8ca4Slogin Self::nanosleep(req, rem) 723ab5c8ca4Slogin } 724ab5c8ca4Slogin } 725ab5c8ca4Slogin 726ab5c8ca4Slogin SYS_CLOCK => Self::clock(), 727ab5c8ca4Slogin SYS_PIPE => { 72822c9db31Shanjiezhou let pipefd: *mut i32 = args[0] as *mut c_int; 72922c9db31Shanjiezhou let arg1 = args[1]; 73022c9db31Shanjiezhou if pipefd.is_null() { 73122c9db31Shanjiezhou Err(SystemError::EFAULT) 73222c9db31Shanjiezhou } else { 73322c9db31Shanjiezhou let flags = FileMode::from_bits_truncate(arg1 as u32); 73422c9db31Shanjiezhou Self::pipe2(pipefd, flags) 735ab5c8ca4Slogin } 736ab5c8ca4Slogin } 737ab5c8ca4Slogin 738ab5c8ca4Slogin SYS_UNLINK_AT => { 739ab5c8ca4Slogin let dirfd = args[0] as i32; 740ab5c8ca4Slogin let pathname = args[1] as *const c_char; 741ab5c8ca4Slogin let flags = args[2] as u32; 742be63f3b2Shoumkh let virt_pathname = VirtAddr::new(pathname as usize); 7431496ba7bSLoGin if frame.from_user() && verify_area(virt_pathname, PAGE_4K_SIZE as usize).is_err() { 744ab5c8ca4Slogin Err(SystemError::EFAULT) 745ab5c8ca4Slogin } else if pathname.is_null() { 746ab5c8ca4Slogin Err(SystemError::EFAULT) 747ab5c8ca4Slogin } else { 748ab5c8ca4Slogin let get_path = || { 749ab5c8ca4Slogin let pathname: &CStr = unsafe { CStr::from_ptr(pathname) }; 750ab5c8ca4Slogin 751ab5c8ca4Slogin let pathname: &str = pathname.to_str().map_err(|_| SystemError::EINVAL)?; 752ab5c8ca4Slogin if pathname.len() >= MAX_PATHLEN { 753ab5c8ca4Slogin return Err(SystemError::ENAMETOOLONG); 754ab5c8ca4Slogin } 755ab5c8ca4Slogin return Ok(pathname.trim()); 756ab5c8ca4Slogin }; 757ab5c8ca4Slogin let pathname = get_path(); 758ab5c8ca4Slogin if pathname.is_err() { 759ab5c8ca4Slogin Err(pathname.unwrap_err()) 760ab5c8ca4Slogin } else { 7616d81180bSLoGin // kdebug!("sys unlinkat: dirfd: {}, pathname: {}", dirfd, pathname.as_ref().unwrap()); 762ab5c8ca4Slogin Self::unlinkat(dirfd, pathname.unwrap(), flags) 763ab5c8ca4Slogin } 764ab5c8ca4Slogin } 765ab5c8ca4Slogin } 766*bf4a4899SLoGin 767*bf4a4899SLoGin SYS_UNLINK => { 768*bf4a4899SLoGin let pathname = args[0] as *const u8; 769*bf4a4899SLoGin Self::unlink(pathname) 770*bf4a4899SLoGin } 771ab5c8ca4Slogin SYS_KILL => { 7721496ba7bSLoGin let pid = Pid::new(args[0]); 773ab5c8ca4Slogin let sig = args[1] as c_int; 7743c82aa56SChiichen // kdebug!("KILL SYSCALL RECEIVED"); 775ab5c8ca4Slogin Self::kill(pid, sig) 776ab5c8ca4Slogin } 777ab5c8ca4Slogin 778ab5c8ca4Slogin SYS_SIGACTION => { 779ab5c8ca4Slogin let sig = args[0] as c_int; 780ab5c8ca4Slogin let act = args[1]; 781ab5c8ca4Slogin let old_act = args[2]; 7821496ba7bSLoGin Self::sigaction(sig, act, old_act, frame.from_user()) 783ab5c8ca4Slogin } 784ab5c8ca4Slogin 785ab5c8ca4Slogin SYS_RT_SIGRETURN => { 786ab5c8ca4Slogin // 由于目前signal机制的实现,与x86_64强关联,因此暂时在arch/x86_64/syscall.rs中调用 787ab5c8ca4Slogin // todo: 未来需要将signal机制与平台解耦 788ab5c8ca4Slogin todo!() 789ab5c8ca4Slogin } 790ab5c8ca4Slogin 7911496ba7bSLoGin SYS_GETPID => Self::getpid().map(|pid| pid.into()), 792ab5c8ca4Slogin 7931496ba7bSLoGin SYS_SCHED => Self::sched(frame.from_user()), 794ab5c8ca4Slogin SYS_DUP => { 795ab5c8ca4Slogin let oldfd: i32 = args[0] as c_int; 796ab5c8ca4Slogin Self::dup(oldfd) 797ab5c8ca4Slogin } 798ab5c8ca4Slogin SYS_DUP2 => { 799ab5c8ca4Slogin let oldfd: i32 = args[0] as c_int; 800ab5c8ca4Slogin let newfd: i32 = args[1] as c_int; 801ab5c8ca4Slogin Self::dup2(oldfd, newfd) 802ab5c8ca4Slogin } 803ab5c8ca4Slogin 804ab5c8ca4Slogin SYS_SOCKET => Self::socket(args[0], args[1], args[2]), 805ab5c8ca4Slogin SYS_SETSOCKOPT => { 806ab5c8ca4Slogin let optval = args[3] as *const u8; 807ab5c8ca4Slogin let optlen = args[4] as usize; 808be63f3b2Shoumkh let virt_optval = VirtAddr::new(optval as usize); 809ab5c8ca4Slogin // 验证optval的地址是否合法 810be63f3b2Shoumkh if verify_area(virt_optval, optlen as usize).is_err() { 811ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 812ab5c8ca4Slogin Err(SystemError::EFAULT) 813ab5c8ca4Slogin } else { 814ab5c8ca4Slogin let data: &[u8] = unsafe { core::slice::from_raw_parts(optval, optlen) }; 815ab5c8ca4Slogin Self::setsockopt(args[0], args[1], args[2], data) 816ab5c8ca4Slogin } 817ab5c8ca4Slogin } 818ab5c8ca4Slogin SYS_GETSOCKOPT => { 819ab5c8ca4Slogin let optval = args[3] as *mut u8; 820ab5c8ca4Slogin let optlen = args[4] as *mut usize; 821be63f3b2Shoumkh let virt_optval = VirtAddr::new(optval as usize); 822be63f3b2Shoumkh let virt_optlen = VirtAddr::new(optlen as usize); 823ab5c8ca4Slogin let security_check = || { 824ab5c8ca4Slogin // 验证optval的地址是否合法 825be63f3b2Shoumkh if verify_area(virt_optval, PAGE_4K_SIZE as usize).is_err() { 826ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 827ab5c8ca4Slogin return Err(SystemError::EFAULT); 828ab5c8ca4Slogin } 829ab5c8ca4Slogin 830ab5c8ca4Slogin // 验证optlen的地址是否合法 831be63f3b2Shoumkh if verify_area(virt_optlen, core::mem::size_of::<u32>() as usize).is_err() { 832ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 833ab5c8ca4Slogin return Err(SystemError::EFAULT); 834ab5c8ca4Slogin } 835ab5c8ca4Slogin return Ok(()); 836ab5c8ca4Slogin }; 837ab5c8ca4Slogin let r = security_check(); 838ab5c8ca4Slogin if r.is_err() { 839ab5c8ca4Slogin Err(r.unwrap_err()) 840ab5c8ca4Slogin } else { 841ab5c8ca4Slogin Self::getsockopt(args[0], args[1], args[2], optval, optlen as *mut u32) 842ab5c8ca4Slogin } 843ab5c8ca4Slogin } 844ab5c8ca4Slogin 845ab5c8ca4Slogin SYS_CONNECT => { 846ab5c8ca4Slogin let addr = args[1] as *const SockAddr; 847ab5c8ca4Slogin let addrlen = args[2] as usize; 848be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 849ab5c8ca4Slogin // 验证addr的地址是否合法 850be63f3b2Shoumkh if verify_area(virt_addr, addrlen as usize).is_err() { 851ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 852ab5c8ca4Slogin Err(SystemError::EFAULT) 853ab5c8ca4Slogin } else { 854ab5c8ca4Slogin Self::connect(args[0], addr, addrlen) 855ab5c8ca4Slogin } 856ab5c8ca4Slogin } 857ab5c8ca4Slogin SYS_BIND => { 858ab5c8ca4Slogin let addr = args[1] as *const SockAddr; 859ab5c8ca4Slogin let addrlen = args[2] as usize; 860be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 861ab5c8ca4Slogin // 验证addr的地址是否合法 862be63f3b2Shoumkh if verify_area(virt_addr, addrlen as usize).is_err() { 863ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 864ab5c8ca4Slogin Err(SystemError::EFAULT) 865ab5c8ca4Slogin } else { 866ab5c8ca4Slogin Self::bind(args[0], addr, addrlen) 867ab5c8ca4Slogin } 868ab5c8ca4Slogin } 869ab5c8ca4Slogin 870ab5c8ca4Slogin SYS_SENDTO => { 871ab5c8ca4Slogin let buf = args[1] as *const u8; 872ab5c8ca4Slogin let len = args[2] as usize; 873ab5c8ca4Slogin let flags = args[3] as u32; 874ab5c8ca4Slogin let addr = args[4] as *const SockAddr; 875ab5c8ca4Slogin let addrlen = args[5] as usize; 876be63f3b2Shoumkh let virt_buf = VirtAddr::new(buf as usize); 877be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 878ab5c8ca4Slogin // 验证buf的地址是否合法 879be63f3b2Shoumkh if verify_area(virt_buf, len as usize).is_err() { 880ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 881ab5c8ca4Slogin Err(SystemError::EFAULT) 882be63f3b2Shoumkh } else if verify_area(virt_addr, addrlen as usize).is_err() { 883ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 884ab5c8ca4Slogin Err(SystemError::EFAULT) 885ab5c8ca4Slogin } else { 886ab5c8ca4Slogin let data: &[u8] = unsafe { core::slice::from_raw_parts(buf, len) }; 887ab5c8ca4Slogin Self::sendto(args[0], data, flags, addr, addrlen) 888ab5c8ca4Slogin } 889ab5c8ca4Slogin } 890ab5c8ca4Slogin 891ab5c8ca4Slogin SYS_RECVFROM => { 892ab5c8ca4Slogin let buf = args[1] as *mut u8; 893ab5c8ca4Slogin let len = args[2] as usize; 894ab5c8ca4Slogin let flags = args[3] as u32; 895ab5c8ca4Slogin let addr = args[4] as *mut SockAddr; 896ab5c8ca4Slogin let addrlen = args[5] as *mut usize; 897be63f3b2Shoumkh let virt_buf = VirtAddr::new(buf as usize); 898be63f3b2Shoumkh let virt_addrlen = VirtAddr::new(addrlen as usize); 899be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 900ab5c8ca4Slogin let security_check = || { 901ab5c8ca4Slogin // 验证buf的地址是否合法 902be63f3b2Shoumkh if verify_area(virt_buf, len as usize).is_err() { 903ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 904ab5c8ca4Slogin return Err(SystemError::EFAULT); 905ab5c8ca4Slogin } 906ab5c8ca4Slogin 907ab5c8ca4Slogin // 验证addrlen的地址是否合法 908be63f3b2Shoumkh if verify_area(virt_addrlen, core::mem::size_of::<u32>() as usize).is_err() { 909ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 910ab5c8ca4Slogin return Err(SystemError::EFAULT); 911ab5c8ca4Slogin } 912ab5c8ca4Slogin 913be63f3b2Shoumkh if verify_area(virt_addr, core::mem::size_of::<SockAddr>() as usize).is_err() { 914ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 915ab5c8ca4Slogin return Err(SystemError::EFAULT); 916ab5c8ca4Slogin } 917ab5c8ca4Slogin return Ok(()); 918ab5c8ca4Slogin }; 919ab5c8ca4Slogin let r = security_check(); 920ab5c8ca4Slogin if r.is_err() { 921ab5c8ca4Slogin Err(r.unwrap_err()) 922ab5c8ca4Slogin } else { 923ab5c8ca4Slogin let buf = unsafe { core::slice::from_raw_parts_mut(buf, len) }; 924ab5c8ca4Slogin Self::recvfrom(args[0], buf, flags, addr, addrlen as *mut u32) 925ab5c8ca4Slogin } 926ab5c8ca4Slogin } 927ab5c8ca4Slogin 928ab5c8ca4Slogin SYS_RECVMSG => { 929ab5c8ca4Slogin let msg = args[1] as *mut crate::net::syscall::MsgHdr; 930ab5c8ca4Slogin let flags = args[2] as u32; 9314537ffb7SChiichen match UserBufferWriter::new( 9324537ffb7SChiichen msg, 9334537ffb7SChiichen core::mem::size_of::<crate::net::syscall::MsgHdr>(), 9344537ffb7SChiichen true, 9354537ffb7SChiichen ) { 9364537ffb7SChiichen Err(e) => Err(e), 9374537ffb7SChiichen Ok(mut user_buffer_writer) => { 9384537ffb7SChiichen match user_buffer_writer.buffer::<crate::net::syscall::MsgHdr>(0) { 9394537ffb7SChiichen Err(e) => Err(e), 9404537ffb7SChiichen Ok(buffer) => { 9414537ffb7SChiichen let msg = &mut buffer[0]; 942ab5c8ca4Slogin Self::recvmsg(args[0], msg, flags) 943ab5c8ca4Slogin } 944ab5c8ca4Slogin } 9454537ffb7SChiichen } 9464537ffb7SChiichen } 9474537ffb7SChiichen } 948ab5c8ca4Slogin 949ab5c8ca4Slogin SYS_LISTEN => Self::listen(args[0], args[1]), 950ab5c8ca4Slogin SYS_SHUTDOWN => Self::shutdown(args[0], args[1]), 951ab5c8ca4Slogin SYS_ACCEPT => Self::accept(args[0], args[1] as *mut SockAddr, args[2] as *mut u32), 952c47fe904SLoGin SYS_ACCEPT4 => Self::accept4( 953c47fe904SLoGin args[0], 954c47fe904SLoGin args[1] as *mut SockAddr, 955c47fe904SLoGin args[2] as *mut u32, 956c47fe904SLoGin args[3] as u32, 957c47fe904SLoGin ), 958ab5c8ca4Slogin SYS_GETSOCKNAME => { 959ab5c8ca4Slogin Self::getsockname(args[0], args[1] as *mut SockAddr, args[2] as *mut u32) 960ab5c8ca4Slogin } 961ab5c8ca4Slogin SYS_GETPEERNAME => { 962ab5c8ca4Slogin Self::getpeername(args[0], args[1] as *mut SockAddr, args[2] as *mut u32) 963ab5c8ca4Slogin } 96436fd0130Shoumkh SYS_GETTIMEOFDAY => { 96536fd0130Shoumkh let timeval = args[0] as *mut PosixTimeval; 96640fe15e0SLoGin let timezone_ptr = args[1] as *mut PosixTimeZone; 96740fe15e0SLoGin Self::gettimeofday(timeval, timezone_ptr) 9684537ffb7SChiichen } 96940fe15e0SLoGin SYS_MMAP => { 97040fe15e0SLoGin let len = page_align_up(args[1]); 971be63f3b2Shoumkh let virt_addr = VirtAddr::new(args[0] as usize); 972be63f3b2Shoumkh if verify_area(virt_addr, len as usize).is_err() { 97340fe15e0SLoGin Err(SystemError::EFAULT) 97440fe15e0SLoGin } else { 97540fe15e0SLoGin Self::mmap( 97640fe15e0SLoGin VirtAddr::new(args[0]), 97740fe15e0SLoGin len, 97840fe15e0SLoGin args[2], 97940fe15e0SLoGin args[3], 98040fe15e0SLoGin args[4] as i32, 98140fe15e0SLoGin args[5], 98240fe15e0SLoGin ) 98340fe15e0SLoGin } 98440fe15e0SLoGin } 98540fe15e0SLoGin SYS_MUNMAP => { 98640fe15e0SLoGin let addr = args[0]; 98740fe15e0SLoGin let len = page_align_up(args[1]); 988971462beSGnoCiYeH if addr & (MMArch::PAGE_SIZE - 1) != 0 { 98940fe15e0SLoGin // The addr argument is not a multiple of the page size 99040fe15e0SLoGin Err(SystemError::EINVAL) 99140fe15e0SLoGin } else { 99240fe15e0SLoGin Self::munmap(VirtAddr::new(addr), len) 99340fe15e0SLoGin } 99440fe15e0SLoGin } 99540fe15e0SLoGin SYS_MPROTECT => { 99640fe15e0SLoGin let addr = args[0]; 99740fe15e0SLoGin let len = page_align_up(args[1]); 998971462beSGnoCiYeH if addr & (MMArch::PAGE_SIZE - 1) != 0 { 99940fe15e0SLoGin // The addr argument is not a multiple of the page size 100040fe15e0SLoGin Err(SystemError::EINVAL) 100140fe15e0SLoGin } else { 100240fe15e0SLoGin Self::mprotect(VirtAddr::new(addr), len, args[2]) 100340fe15e0SLoGin } 100440fe15e0SLoGin } 100540fe15e0SLoGin 10061496ba7bSLoGin SYS_GETCWD => { 10071496ba7bSLoGin let buf = args[0] as *mut u8; 10081496ba7bSLoGin let size = args[1] as usize; 10091496ba7bSLoGin let security_check = || { 10101496ba7bSLoGin verify_area(VirtAddr::new(buf as usize), size)?; 10111496ba7bSLoGin return Ok(()); 10121496ba7bSLoGin }; 10131496ba7bSLoGin let r = security_check(); 10141496ba7bSLoGin if r.is_err() { 10151496ba7bSLoGin Err(r.unwrap_err()) 10161496ba7bSLoGin } else { 10171496ba7bSLoGin let buf = unsafe { core::slice::from_raw_parts_mut(buf, size) }; 10181496ba7bSLoGin Self::getcwd(buf).map(|ptr| ptr.data()) 10191496ba7bSLoGin } 10201496ba7bSLoGin } 10211496ba7bSLoGin 10221496ba7bSLoGin SYS_GETPGID => Self::getpgid(Pid::new(args[0])).map(|pid| pid.into()), 10231496ba7bSLoGin 10241496ba7bSLoGin SYS_GETPPID => Self::getppid().map(|pid| pid.into()), 1025be63f3b2Shoumkh SYS_FSTAT => { 1026be63f3b2Shoumkh let fd = args[0] as i32; 1027be63f3b2Shoumkh let kstat = args[1] as *mut PosixKstat; 1028be63f3b2Shoumkh let vaddr = VirtAddr::new(kstat as usize); 1029be63f3b2Shoumkh // FIXME 由于c中的verify_area与rust中的verify_area重名,所以在引入时加了前缀区分 1030be63f3b2Shoumkh // TODO 应该将用了c版本的verify_area都改为rust的verify_area 1031be63f3b2Shoumkh match verify_area(vaddr, core::mem::size_of::<PosixKstat>()) { 1032be63f3b2Shoumkh Ok(_) => Self::fstat(fd, kstat), 1033be63f3b2Shoumkh Err(e) => Err(e), 1034be63f3b2Shoumkh } 1035be63f3b2Shoumkh } 1036be63f3b2Shoumkh 10376d81180bSLoGin SYS_FCNTL => { 10386d81180bSLoGin let fd = args[0] as i32; 10396d81180bSLoGin let cmd: Option<FcntlCommand> = 10406d81180bSLoGin <FcntlCommand as FromPrimitive>::from_u32(args[1] as u32); 10416d81180bSLoGin let arg = args[2] as i32; 10426d81180bSLoGin let res = if let Some(cmd) = cmd { 10436d81180bSLoGin Self::fcntl(fd, cmd, arg) 10446d81180bSLoGin } else { 10456d81180bSLoGin Err(SystemError::EINVAL) 10466d81180bSLoGin }; 10476d81180bSLoGin 10486d81180bSLoGin // kdebug!("FCNTL: fd: {}, cmd: {:?}, arg: {}, res: {:?}", fd, cmd, arg, res); 10496d81180bSLoGin res 10506d81180bSLoGin } 10516d81180bSLoGin 10526d81180bSLoGin SYS_FTRUNCATE => { 10536d81180bSLoGin let fd = args[0] as i32; 10546d81180bSLoGin let len = args[1] as usize; 10556d81180bSLoGin let res = Self::ftruncate(fd, len); 10566d81180bSLoGin // kdebug!("FTRUNCATE: fd: {}, len: {}, res: {:?}", fd, len, res); 10576d81180bSLoGin res 10586d81180bSLoGin } 10596d81180bSLoGin 10602dbef785SGnoCiYeH SYS_MKNOD => { 10612dbef785SGnoCiYeH let path = args[0]; 10622dbef785SGnoCiYeH let flags = args[1]; 10632dbef785SGnoCiYeH let dev_t = args[2]; 10642dbef785SGnoCiYeH let flags: ModeType = ModeType::from_bits_truncate(flags as u32); 10652dbef785SGnoCiYeH Self::mknod(path as *const i8, flags, DeviceNumber::from(dev_t)) 10662dbef785SGnoCiYeH } 10672dbef785SGnoCiYeH 1068971462beSGnoCiYeH SYS_CLONE => { 1069971462beSGnoCiYeH let parent_tid = VirtAddr::new(args[2]); 1070971462beSGnoCiYeH let child_tid = VirtAddr::new(args[3]); 1071971462beSGnoCiYeH 1072971462beSGnoCiYeH // 地址校验 1073971462beSGnoCiYeH verify_area(parent_tid, core::mem::size_of::<i32>())?; 1074971462beSGnoCiYeH verify_area(child_tid, core::mem::size_of::<i32>())?; 1075971462beSGnoCiYeH 1076971462beSGnoCiYeH let mut clone_args = KernelCloneArgs::new(); 1077971462beSGnoCiYeH clone_args.flags = CloneFlags::from_bits_truncate(args[0] as u64); 1078971462beSGnoCiYeH clone_args.stack = args[1]; 1079971462beSGnoCiYeH clone_args.parent_tid = parent_tid; 1080971462beSGnoCiYeH clone_args.child_tid = child_tid; 1081971462beSGnoCiYeH clone_args.tls = args[4]; 1082971462beSGnoCiYeH Self::clone(frame, clone_args) 1083971462beSGnoCiYeH } 1084971462beSGnoCiYeH 1085971462beSGnoCiYeH SYS_FUTEX => { 1086971462beSGnoCiYeH let uaddr = VirtAddr::new(args[0]); 1087971462beSGnoCiYeH let operation = FutexFlag::from_bits(args[1] as u32).ok_or(SystemError::ENOSYS)?; 1088971462beSGnoCiYeH let val = args[2] as u32; 1089971462beSGnoCiYeH let utime = args[3]; 1090971462beSGnoCiYeH let uaddr2 = VirtAddr::new(args[4]); 1091971462beSGnoCiYeH let val3 = args[5] as u32; 1092971462beSGnoCiYeH 1093971462beSGnoCiYeH verify_area(uaddr, core::mem::size_of::<u32>())?; 1094971462beSGnoCiYeH verify_area(uaddr2, core::mem::size_of::<u32>())?; 1095971462beSGnoCiYeH 1096971462beSGnoCiYeH let mut timespec = None; 1097971462beSGnoCiYeH if utime != 0 && operation.contains(FutexFlag::FLAGS_HAS_TIMEOUT) { 1098971462beSGnoCiYeH let reader = UserBufferReader::new( 1099971462beSGnoCiYeH utime as *const TimeSpec, 1100971462beSGnoCiYeH core::mem::size_of::<TimeSpec>(), 1101971462beSGnoCiYeH true, 1102971462beSGnoCiYeH )?; 1103971462beSGnoCiYeH 1104971462beSGnoCiYeH timespec = Some(reader.read_one_from_user::<TimeSpec>(0)?.clone()); 1105971462beSGnoCiYeH } 1106971462beSGnoCiYeH 1107971462beSGnoCiYeH Self::do_futex(uaddr, operation, val, timespec, uaddr2, utime as u32, val3) 1108971462beSGnoCiYeH } 1109971462beSGnoCiYeH 1110*bf4a4899SLoGin SYS_READV => Self::readv(args[0] as i32, args[1], args[2]), 1111971462beSGnoCiYeH SYS_WRITEV => Self::writev(args[0] as i32, args[1], args[2]), 1112971462beSGnoCiYeH 1113971462beSGnoCiYeH SYS_ARCH_PRCTL => Self::arch_prctl(args[0], args[1]), 1114971462beSGnoCiYeH 1115971462beSGnoCiYeH SYS_SET_TID_ADDR => Self::set_tid_address(args[0]), 1116971462beSGnoCiYeH 1117*bf4a4899SLoGin SYS_STAT | SYS_LSTAT => { 1118971462beSGnoCiYeH let path: &CStr = unsafe { CStr::from_ptr(args[0] as *const c_char) }; 1119971462beSGnoCiYeH let path: Result<&str, core::str::Utf8Error> = path.to_str(); 1120971462beSGnoCiYeH let res = if path.is_err() { 1121971462beSGnoCiYeH Err(SystemError::EINVAL) 1122971462beSGnoCiYeH } else { 1123971462beSGnoCiYeH let path: &str = path.unwrap(); 1124971462beSGnoCiYeH let kstat = args[1] as *mut PosixKstat; 1125971462beSGnoCiYeH let vaddr = VirtAddr::new(kstat as usize); 1126971462beSGnoCiYeH match verify_area(vaddr, core::mem::size_of::<PosixKstat>()) { 1127*bf4a4899SLoGin Ok(_) => { 1128*bf4a4899SLoGin if syscall_num == SYS_STAT { 1129*bf4a4899SLoGin Self::stat(path, kstat) 1130*bf4a4899SLoGin } else { 1131*bf4a4899SLoGin Self::lstat(path, kstat) 1132*bf4a4899SLoGin } 1133*bf4a4899SLoGin } 1134971462beSGnoCiYeH Err(e) => Err(e), 1135971462beSGnoCiYeH } 1136971462beSGnoCiYeH }; 1137971462beSGnoCiYeH 1138971462beSGnoCiYeH res 1139971462beSGnoCiYeH } 1140971462beSGnoCiYeH 1141971462beSGnoCiYeH // 目前为了适配musl-libc,以下系统调用先这样写着 1142971462beSGnoCiYeH SYS_GET_RANDOM => { 1143971462beSGnoCiYeH let flags = GRandFlags::from_bits(args[2] as u8).ok_or(SystemError::EINVAL)?; 1144971462beSGnoCiYeH Self::get_random(args[0] as *mut u8, args[1], flags) 1145971462beSGnoCiYeH } 1146971462beSGnoCiYeH 1147971462beSGnoCiYeH SYS_SOCKET_PAIR => { 1148971462beSGnoCiYeH unimplemented!() 1149971462beSGnoCiYeH } 1150971462beSGnoCiYeH 1151971462beSGnoCiYeH SYS_POLL => { 1152971462beSGnoCiYeH kwarn!("SYS_POLL has not yet been implemented"); 1153971462beSGnoCiYeH Ok(0) 1154971462beSGnoCiYeH } 1155971462beSGnoCiYeH 1156971462beSGnoCiYeH SYS_RT_SIGPROCMASK => { 1157971462beSGnoCiYeH kwarn!("SYS_RT_SIGPROCMASK has not yet been implemented"); 1158971462beSGnoCiYeH Ok(0) 1159971462beSGnoCiYeH } 1160971462beSGnoCiYeH 1161971462beSGnoCiYeH SYS_TKILL => { 1162971462beSGnoCiYeH kwarn!("SYS_TKILL has not yet been implemented"); 1163971462beSGnoCiYeH Ok(0) 1164971462beSGnoCiYeH } 1165971462beSGnoCiYeH 1166971462beSGnoCiYeH SYS_SIGALTSTACK => { 1167971462beSGnoCiYeH kwarn!("SYS_SIGALTSTACK has not yet been implemented"); 1168971462beSGnoCiYeH Ok(0) 1169971462beSGnoCiYeH } 1170971462beSGnoCiYeH 117116033951SGnoCiYeH SYS_EXIT_GROUP => { 117216033951SGnoCiYeH kwarn!("SYS_EXIT_GROUP has not yet been implemented"); 117316033951SGnoCiYeH Ok(0) 117416033951SGnoCiYeH } 117516033951SGnoCiYeH 117604babc3fSMemoryShore SYS_MADVISE => { 117704babc3fSMemoryShore kwarn!("SYS_MADVISE has not yet been implemented"); 117804babc3fSMemoryShore Ok(0) 117904babc3fSMemoryShore } 1180393f6915SLoGin SYS_GETTID => Self::gettid().map(|tid| tid.into()), 118102e249f3SLoGin SYS_GETUID => Self::getuid().map(|uid| uid.into()), 118202e249f3SLoGin SYS_SYSLOG => { 118302e249f3SLoGin kwarn!("SYS_SYSLOG has not yet been implemented"); 118402e249f3SLoGin Ok(0) 118502e249f3SLoGin } 118602e249f3SLoGin SYS_GETGID => Self::getgid().map(|gid| gid.into()), 118702e249f3SLoGin SYS_SETUID => { 118802e249f3SLoGin kwarn!("SYS_SETUID has not yet been implemented"); 118902e249f3SLoGin Ok(0) 119002e249f3SLoGin } 119102e249f3SLoGin SYS_SETGID => { 119202e249f3SLoGin kwarn!("SYS_SETGID has not yet been implemented"); 119302e249f3SLoGin Ok(0) 119402e249f3SLoGin } 119502e249f3SLoGin SYS_GETEUID => Self::geteuid().map(|euid| euid.into()), 119602e249f3SLoGin SYS_GETEGID => Self::getegid().map(|egid| egid.into()), 1197be8cdf4bSLoGin SYS_GETRUSAGE => { 1198be8cdf4bSLoGin let who = args[0] as c_int; 1199be8cdf4bSLoGin let rusage = args[1] as *mut RUsage; 1200be8cdf4bSLoGin Self::get_rusage(who, rusage) 1201be8cdf4bSLoGin } 120204babc3fSMemoryShore 1203709498caSLoGin SYS_READLINK => { 1204709498caSLoGin let path = args[0] as *const u8; 1205709498caSLoGin let buf = args[1] as *mut u8; 1206709498caSLoGin let bufsiz = args[2] as usize; 1207709498caSLoGin Self::readlink(path, buf, bufsiz) 1208709498caSLoGin } 1209709498caSLoGin 1210709498caSLoGin SYS_READLINK_AT => { 1211709498caSLoGin let dirfd = args[0] as i32; 1212709498caSLoGin let pathname = args[1] as *const u8; 1213709498caSLoGin let buf = args[2] as *mut u8; 1214709498caSLoGin let bufsiz = args[3] as usize; 1215709498caSLoGin Self::readlink_at(dirfd, pathname, buf, bufsiz) 1216709498caSLoGin } 1217709498caSLoGin 12180d9b7d92SLoGin SYS_PRLIMIT64 => { 12190d9b7d92SLoGin let pid = args[0]; 12200d9b7d92SLoGin let pid = Pid::new(pid); 12210d9b7d92SLoGin let resource = args[1]; 12220d9b7d92SLoGin let new_limit = args[2] as *const RLimit64; 12230d9b7d92SLoGin let old_limit = args[3] as *mut RLimit64; 12240d9b7d92SLoGin 12250d9b7d92SLoGin Self::prlimit64(pid, resource, new_limit, old_limit) 12260d9b7d92SLoGin } 12270d9b7d92SLoGin 12289b0abe6dSLoGin SYS_ACCESS => { 12299b0abe6dSLoGin let pathname = args[0] as *const u8; 12309b0abe6dSLoGin let mode = args[1] as u32; 12319b0abe6dSLoGin Self::access(pathname, mode) 12329b0abe6dSLoGin } 12339b0abe6dSLoGin 12349b0abe6dSLoGin SYS_FACCESSAT => { 12359b0abe6dSLoGin let dirfd = args[0] as i32; 12369b0abe6dSLoGin let pathname = args[1] as *const u8; 12379b0abe6dSLoGin let mode = args[2] as u32; 12389b0abe6dSLoGin Self::faccessat2(dirfd, pathname, mode, 0) 12399b0abe6dSLoGin } 12409b0abe6dSLoGin 12419b0abe6dSLoGin SYS_FACCESSAT2 => { 12429b0abe6dSLoGin let dirfd = args[0] as i32; 12439b0abe6dSLoGin let pathname = args[1] as *const u8; 12449b0abe6dSLoGin let mode = args[2] as u32; 12459b0abe6dSLoGin let flags = args[3] as u32; 12469b0abe6dSLoGin Self::faccessat2(dirfd, pathname, mode, flags) 12479b0abe6dSLoGin } 12489b0abe6dSLoGin 1249*bf4a4899SLoGin SYS_CLOCK_GETTIME => { 1250*bf4a4899SLoGin let clockid = args[0] as i32; 1251*bf4a4899SLoGin let timespec = args[1] as *mut TimeSpec; 1252*bf4a4899SLoGin Self::clock_gettime(clockid, timespec) 1253*bf4a4899SLoGin } 1254*bf4a4899SLoGin 1255*bf4a4899SLoGin SYS_SYSINFO => { 1256*bf4a4899SLoGin let info = args[0] as *mut SysInfo; 1257*bf4a4899SLoGin Self::sysinfo(info) 1258*bf4a4899SLoGin } 1259*bf4a4899SLoGin 1260*bf4a4899SLoGin SYS_UMASK => { 1261*bf4a4899SLoGin let mask = args[0] as u32; 1262*bf4a4899SLoGin Self::umask(mask) 1263*bf4a4899SLoGin } 1264*bf4a4899SLoGin 1265*bf4a4899SLoGin SYS_CHMOD => { 1266*bf4a4899SLoGin let pathname = args[0] as *const u8; 1267*bf4a4899SLoGin let mode = args[1] as u32; 1268*bf4a4899SLoGin Self::chmod(pathname, mode) 1269*bf4a4899SLoGin } 1270*bf4a4899SLoGin SYS_FCHMOD => { 1271*bf4a4899SLoGin let fd = args[0] as i32; 1272*bf4a4899SLoGin let mode = args[1] as u32; 1273*bf4a4899SLoGin Self::fchmod(fd, mode) 1274*bf4a4899SLoGin } 1275*bf4a4899SLoGin SYS_FCHMODAT => { 1276*bf4a4899SLoGin let dirfd = args[0] as i32; 1277*bf4a4899SLoGin let pathname = args[1] as *const u8; 1278*bf4a4899SLoGin let mode = args[2] as u32; 1279*bf4a4899SLoGin Self::fchmodat(dirfd, pathname, mode) 1280*bf4a4899SLoGin } 1281*bf4a4899SLoGin 1282ab5c8ca4Slogin _ => panic!("Unsupported syscall ID: {}", syscall_num), 1283ab5c8ca4Slogin }; 1284ab5c8ca4Slogin return r; 1285ab5c8ca4Slogin } 1286ab5c8ca4Slogin 1287ab5c8ca4Slogin pub fn put_string( 1288ab5c8ca4Slogin s: *const u8, 1289ab5c8ca4Slogin front_color: u32, 1290ab5c8ca4Slogin back_color: u32, 1291ab5c8ca4Slogin ) -> Result<usize, SystemError> { 1292ab5c8ca4Slogin return Ok(unsafe { do_put_string(s, front_color, back_color) }); 1293ab5c8ca4Slogin } 1294ab5c8ca4Slogin 1295ab5c8ca4Slogin pub fn reboot() -> Result<usize, SystemError> { 1296ab5c8ca4Slogin cpu_reset(); 1297ab5c8ca4Slogin } 1298ab5c8ca4Slogin } 1299