1ab5c8ca4Slogin use core::{ 2ab5c8ca4Slogin ffi::{c_char, c_int, c_void, CStr}, 3ab5c8ca4Slogin sync::atomic::{AtomicBool, Ordering}, 4ab5c8ca4Slogin }; 5ab5c8ca4Slogin 6971462beSGnoCiYeH use crate::{ 7971462beSGnoCiYeH libs::{futex::constant::FutexFlag, rand::GRandFlags}, 8971462beSGnoCiYeH process::fork::KernelCloneArgs, 9971462beSGnoCiYeH }; 1040314b30SXiaoye Zheng 11676b8ef6SMork use num_traits::{FromPrimitive, ToPrimitive}; 12676b8ef6SMork 13ab5c8ca4Slogin use crate::{ 141496ba7bSLoGin arch::{cpu::cpu_reset, interrupt::TrapFrame, MMArch}, 152dbef785SGnoCiYeH driver::base::{block::SeekFrom, device::DeviceNumber}, 16ab5c8ca4Slogin filesystem::vfs::{ 176d81180bSLoGin fcntl::FcntlCommand, 18ab5c8ca4Slogin file::FileMode, 192dbef785SGnoCiYeH syscall::{ModeType, PosixKstat, SEEK_CUR, SEEK_END, SEEK_MAX, SEEK_SET}, 20ab5c8ca4Slogin MAX_PATHLEN, 21ab5c8ca4Slogin }, 221496ba7bSLoGin include::bindings::bindings::{PAGE_2M_SIZE, PAGE_4K_SIZE}, 23aa0367d6SLoGin kinfo, 2440fe15e0SLoGin libs::align::page_align_up, 25be63f3b2Shoumkh mm::{verify_area, MemoryManagementArch, VirtAddr}, 26ab5c8ca4Slogin net::syscall::SockAddr, 27971462beSGnoCiYeH process::{fork::CloneFlags, Pid}, 2836fd0130Shoumkh time::{ 2940fe15e0SLoGin syscall::{PosixTimeZone, PosixTimeval}, 3036fd0130Shoumkh TimeSpec, 3136fd0130Shoumkh }, 32ab5c8ca4Slogin }; 33ab5c8ca4Slogin 349e9ffedfSPlucky923 use self::user_access::{UserBufferReader, UserBufferWriter}; 354537ffb7SChiichen 3640fe15e0SLoGin pub mod user_access; 3740fe15e0SLoGin 384454d1a2Slogin #[repr(i32)] 39676b8ef6SMork #[derive(Debug, FromPrimitive, ToPrimitive, PartialEq, Eq, Clone)] 4079a452ceShoumkh #[allow(dead_code, non_camel_case_types)] 414454d1a2Slogin pub enum SystemError { 4279a452ceShoumkh EPERM = 1, 4379a452ceShoumkh /// 没有指定的文件或目录 No such file or directory. 4479a452ceShoumkh ENOENT = 2, 454454d1a2Slogin /// 没有这样的进程 No such process. 4679a452ceShoumkh ESRCH = 3, 4779a452ceShoumkh /// 被中断的函数 Interrupted function. 4879a452ceShoumkh EINTR = 4, 4979a452ceShoumkh /// I/O错误 I/O error. 5079a452ceShoumkh EIO = 5, 5179a452ceShoumkh /// 没有这样的设备或地址 No such device or address. 5279a452ceShoumkh ENXIO = 6, 5379a452ceShoumkh /// 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. 5479a452ceShoumkh E2BIG = 7, 5579a452ceShoumkh /// 可执行文件格式错误 Executable file format error 5679a452ceShoumkh ENOEXEC = 8, 5779a452ceShoumkh /// 错误的文件描述符 Bad file descriptor. 5879a452ceShoumkh EBADF = 9, 5979a452ceShoumkh /// 没有子进程 No child processes. 6079a452ceShoumkh ECHILD = 10, 6179a452ceShoumkh /// 资源不可用,请重试。 Resource unavailable, try again.(may be the same value as [EWOULDBLOCK]) 6279a452ceShoumkh /// 6379a452ceShoumkh /// 操作将被禁止 Operation would block.(may be the same value as [EAGAIN]). 6479a452ceShoumkh EAGAIN_OR_EWOULDBLOCK = 11, 6579a452ceShoumkh /// 没有足够的空间 Not enough space. 6679a452ceShoumkh ENOMEM = 12, 6779a452ceShoumkh /// 访问被拒绝 Permission denied 6879a452ceShoumkh EACCES = 13, 6979a452ceShoumkh /// 错误的地址 Bad address 7079a452ceShoumkh EFAULT = 14, 7179a452ceShoumkh /// 需要块设备 Block device required 7279a452ceShoumkh ENOTBLK = 15, 7379a452ceShoumkh /// 设备或资源忙 Device or resource busy. 7479a452ceShoumkh EBUSY = 16, 7579a452ceShoumkh /// 文件已存在 File exists. 7679a452ceShoumkh EEXIST = 17, 774454d1a2Slogin /// 跨设备连接 Cross-device link. 7879a452ceShoumkh EXDEV = 18, 7979a452ceShoumkh /// 没有指定的设备 No such device. 8079a452ceShoumkh ENODEV = 19, 8179a452ceShoumkh /// 不是目录 Not a directory. 8279a452ceShoumkh ENOTDIR = 20, 8379a452ceShoumkh /// 是一个目录 Is a directory 8479a452ceShoumkh EISDIR = 21, 8579a452ceShoumkh /// 不可用的参数 Invalid argument. 8679a452ceShoumkh EINVAL = 22, 8779a452ceShoumkh /// 系统中打开的文件过多 Too many files open in system. 8879a452ceShoumkh ENFILE = 23, 8979a452ceShoumkh /// 文件描述符的值过大 File descriptor value too large. 9079a452ceShoumkh EMFILE = 24, 9179a452ceShoumkh /// 不正确的I/O控制操作 Inappropriate I/O control operation. 9279a452ceShoumkh ENOTTY = 25, 9379a452ceShoumkh /// 文本文件忙 Text file busy. 9479a452ceShoumkh ETXTBSY = 26, 9579a452ceShoumkh /// 文件太大 File too large. 9679a452ceShoumkh EFBIG = 27, 9779a452ceShoumkh /// 设备上没有空间 No space left on device. 9879a452ceShoumkh ENOSPC = 28, 9979a452ceShoumkh /// 错误的寻道.当前文件是pipe,不允许seek请求 Invalid seek. 10079a452ceShoumkh ESPIPE = 29, 10179a452ceShoumkh /// 只读的文件系统 Read-only file system. 10279a452ceShoumkh EROFS = 30, 10379a452ceShoumkh /// 链接数过多 Too many links. 10479a452ceShoumkh EMLINK = 31, 10579a452ceShoumkh /// 断开的管道 Broken pipe. 10679a452ceShoumkh EPIPE = 32, 10779a452ceShoumkh /// 数学参数超出作用域 Mathematics argument out of domain of function. 10879a452ceShoumkh EDOM = 33, 10979a452ceShoumkh /// 结果过大 Result too large. 11079a452ceShoumkh ERANGE = 34, 11179a452ceShoumkh /// 资源死锁将要发生 Resource deadlock would occur. 11279a452ceShoumkh EDEADLK = 35, 11379a452ceShoumkh /// 文件名过长 Filename too long. 11479a452ceShoumkh ENAMETOOLONG = 36, 11579a452ceShoumkh /// 没有可用的锁 No locks available. 11679a452ceShoumkh ENOLCK = 37, 11779a452ceShoumkh /// 功能不支持 Function not supported. 11879a452ceShoumkh ENOSYS = 38, 11979a452ceShoumkh /// 目录非空 Directory not empty. 12079a452ceShoumkh ENOTEMPTY = 39, 12179a452ceShoumkh /// 符号链接级别过多 Too many levels of symbolic links. 12279a452ceShoumkh ELOOP = 40, 12379a452ceShoumkh /// 没有期待类型的消息 No message of the desired type. 12479a452ceShoumkh ENOMSG = 41, 12579a452ceShoumkh /// 标志符被移除 Identifier removed. 12679a452ceShoumkh EIDRM = 42, 12779a452ceShoumkh /// 通道号超出范围 Channel number out of range 12879a452ceShoumkh ECHRNG = 43, 12979a452ceShoumkh /// 二级不同步 Level 2 not synchronized 13079a452ceShoumkh EL2NSYNC = 44, 13179a452ceShoumkh /// 三级暂停 Level 3 halted 13279a452ceShoumkh EL3HLT = 45, 13379a452ceShoumkh /// 三级重置 Level 3 reset 13479a452ceShoumkh EL3RST = 46, 13579a452ceShoumkh /// 链接号超出范围 Link number out of range 13679a452ceShoumkh ELNRNG = 47, 13779a452ceShoumkh /// 未连接协议驱动程序 Protocol driver not attached 13879a452ceShoumkh EUNATCH = 48, 13979a452ceShoumkh /// 没有可用的CSI结构 No CSI structure available 14079a452ceShoumkh ENOCSI = 49, 14179a452ceShoumkh /// 二级暂停 Level 2 halted 14279a452ceShoumkh EL2HLT = 50, 14379a452ceShoumkh /// 无效交换 Invalid exchange 14479a452ceShoumkh EBADE = 51, 14579a452ceShoumkh /// 无效的请求描述符 Invalid request descriptor 14679a452ceShoumkh EBADR = 52, 14779a452ceShoumkh /// 交换满 Exchange full 14879a452ceShoumkh EXFULL = 53, 14979a452ceShoumkh /// 无阳极 No anode 15079a452ceShoumkh ENOANO = 54, 15179a452ceShoumkh /// 请求码无效 Invalid request code 15279a452ceShoumkh EBADRQC = 55, 15379a452ceShoumkh /// 无效插槽 Invalid slot 15479a452ceShoumkh EBADSLT = 56, 15579a452ceShoumkh /// 资源死锁 Resource deadlock would occur 15679a452ceShoumkh EDEADLOCK = 57, 15779a452ceShoumkh /// 错误的字体文件格式 Bad font file format 15879a452ceShoumkh EBFONT = 58, 15979a452ceShoumkh /// 不是STREAM Not a STREAM 16079a452ceShoumkh ENOSTR = 59, 16179a452ceShoumkh /// 队列头没有可读取的消息 No message is available on the STREAM head read queue. 16279a452ceShoumkh ENODATA = 60, 16379a452ceShoumkh /// 流式ioctl()超时 Stream ioctl() timeout 16479a452ceShoumkh ETIME = 61, 16579a452ceShoumkh /// 没有STREAM资源 No STREAM resources. 16679a452ceShoumkh ENOSR = 62, 16779a452ceShoumkh /// 机器不在网络上 Machine is not on the network 16879a452ceShoumkh ENONET = 63, 16979a452ceShoumkh /// 未安装软件包 Package not installed 17079a452ceShoumkh ENOPKG = 64, 17179a452ceShoumkh /// 远程对象 Object is remote 17279a452ceShoumkh EREMOTE = 65, 17379a452ceShoumkh /// 保留 Reserved. 17479a452ceShoumkh ENOLINK = 66, 17579a452ceShoumkh /// 外设错误 Advertise error. 17679a452ceShoumkh EADV = 67, 17779a452ceShoumkh /// 安装错误 Srmount error 17879a452ceShoumkh ESRMNT = 68, 17979a452ceShoumkh /// 发送时发生通信错误 Communication error on send 18079a452ceShoumkh ECOMM = 69, 18179a452ceShoumkh /// 协议错误 Protocol error. 18279a452ceShoumkh EPROTO = 70, 18379a452ceShoumkh /// 保留使用 Reserved. 18479a452ceShoumkh EMULTIHOP = 71, 18579a452ceShoumkh /// RFS特定错误 RFS specific error 18679a452ceShoumkh EDOTDOT = 72, 18779a452ceShoumkh /// 错误的消息 Bad message. 18879a452ceShoumkh EBADMSG = 73, 18979a452ceShoumkh /// 数值过大,产生溢出 Value too large to be stored in data type. 19079a452ceShoumkh EOVERFLOW = 74, 19179a452ceShoumkh /// 名称在网络上不是唯一的 Name not unique on network 19279a452ceShoumkh ENOTUNIQ = 75, 19379a452ceShoumkh /// 处于不良状态的文件描述符 File descriptor in bad state 19479a452ceShoumkh EBADFD = 76, 19579a452ceShoumkh /// 远程地址已更改 Remote address changed 19679a452ceShoumkh EREMCHG = 77, 19779a452ceShoumkh /// 无法访问所需的共享库 Can not access a needed shared library 19879a452ceShoumkh ELIBACC = 78, 19979a452ceShoumkh /// 访问损坏的共享库 Accessing a corrupted shared library 20079a452ceShoumkh ELIBBAD = 79, 20179a452ceShoumkh /// a. out中的.lib部分已损坏 .lib section in a.out corrupted 20279a452ceShoumkh ELIBSCN = 80, 20379a452ceShoumkh /// 尝试链接太多共享库 Attempting to link in too many shared libraries 20479a452ceShoumkh ELIBMAX = 81, 20579a452ceShoumkh /// 无法直接执行共享库 Cannot exec a shared library directly 20679a452ceShoumkh ELIBEXEC = 82, 20779a452ceShoumkh /// 不合法的字符序列 Illegal byte sequence. 20879a452ceShoumkh EILSEQ = 83, 20979a452ceShoumkh /// 中断的系统调用应该重新启动 Interrupted system call should be restarted 21079a452ceShoumkh ERESTART = 84, 21179a452ceShoumkh /// 流管道错误 Streams pipe error 21279a452ceShoumkh ESTRPIPE = 85, 21379a452ceShoumkh /// 用户太多 Too many users 21479a452ceShoumkh EUSERS = 86, 21579a452ceShoumkh /// 不是一个套接字 Not a socket. 21679a452ceShoumkh ENOTSOCK = 87, 21779a452ceShoumkh /// 需要目标地址 Destination address required. 21879a452ceShoumkh EDESTADDRREQ = 88, 21979a452ceShoumkh /// 消息过大 Message too large. 22079a452ceShoumkh EMSGSIZE = 89, 22179a452ceShoumkh /// 对于套接字而言,错误的协议 Protocol wrong type for socket. 22279a452ceShoumkh EPROTOTYPE = 90, 22379a452ceShoumkh /// 协议不可用 Protocol not available. 22479a452ceShoumkh ENOPROTOOPT = 91, 22579a452ceShoumkh /// 协议不被支持 Protocol not supported. 22679a452ceShoumkh EPROTONOSUPPORT = 92, 22779a452ceShoumkh /// 不支持套接字类型 Socket type not supported 22879a452ceShoumkh ESOCKTNOSUPPORT = 93, 22979a452ceShoumkh /// 套接字不支持该操作 Operation not supported on socket (may be the same value as [ENOTSUP]). 23079a452ceShoumkh /// 23179a452ceShoumkh /// 不被支持 Not supported (may be the same value as [EOPNOTSUPP]). 23279a452ceShoumkh EOPNOTSUPP_OR_ENOTSUP = 94, 23379a452ceShoumkh /// 不支持协议系列 Protocol family not supported 23479a452ceShoumkh EPFNOSUPPORT = 95, 23579a452ceShoumkh /// 地址family不支持 Address family not supported. 23679a452ceShoumkh EAFNOSUPPORT = 96, 23779a452ceShoumkh /// 地址正在被使用 Address in use. 23879a452ceShoumkh EADDRINUSE = 97, 23979a452ceShoumkh /// 地址不可用 Address not available. 24079a452ceShoumkh EADDRNOTAVAIL = 98, 24179a452ceShoumkh /// 网络已关闭 Network is down. 24279a452ceShoumkh ENETDOWN = 99, 24379a452ceShoumkh /// 网络不可达 Network unreachable. 24479a452ceShoumkh ENETUNREACH = 100, 24579a452ceShoumkh /// 网络连接已断开 Connection aborted by network. 24679a452ceShoumkh ENETRESET = 101, 24779a452ceShoumkh /// 连接已断开 Connection aborted. 24879a452ceShoumkh ECONNABORTED = 102, 24979a452ceShoumkh /// 连接被重置 Connection reset. 25079a452ceShoumkh ECONNRESET = 103, 25179a452ceShoumkh /// 缓冲区空间不足 No buffer space available. 25279a452ceShoumkh ENOBUFS = 104, 25379a452ceShoumkh /// 套接字已连接 Socket is connected. 25479a452ceShoumkh EISCONN = 105, 25579a452ceShoumkh /// 套接字未连接 The socket is not connected. 25679a452ceShoumkh ENOTCONN = 106, 25779a452ceShoumkh /// 传输端点关闭后无法发送 Cannot send after transport endpoint shutdown 25879a452ceShoumkh ESHUTDOWN = 107, 25979a452ceShoumkh /// 引用太多:无法拼接 Too many references: cannot splice 26079a452ceShoumkh ETOOMANYREFS = 108, 26179a452ceShoumkh /// 连接超时 Connection timed out. 26279a452ceShoumkh ETIMEDOUT = 109, 26379a452ceShoumkh /// 连接被拒绝 Connection refused. 26479a452ceShoumkh ECONNREFUSED = 110, 26579a452ceShoumkh /// 主机已关闭 Host is down 26679a452ceShoumkh EHOSTDOWN = 111, 26779a452ceShoumkh /// 主机不可达 Host is unreachable. 26879a452ceShoumkh EHOSTUNREACH = 112, 26979a452ceShoumkh /// 连接已经在处理 Connection already in progress. 27079a452ceShoumkh EALREADY = 113, 27179a452ceShoumkh /// 操作正在处理 Operation in progress. 27279a452ceShoumkh EINPROGRESS = 114, 27379a452ceShoumkh /// 保留 Reserved. 27479a452ceShoumkh ESTALE = 115, 27579a452ceShoumkh /// 结构需要清理 Structure needs cleaning 27679a452ceShoumkh EUCLEAN = 116, 27779a452ceShoumkh /// 不是XENIX命名类型文件 Not a XENIX named type file 27879a452ceShoumkh ENOTNAM = 117, 27979a452ceShoumkh /// 没有可用的XENIX信号量 No XENIX semaphores available 28079a452ceShoumkh ENAVAIL = 118, 28179a452ceShoumkh /// 是命名类型文件 Is a named type file 28279a452ceShoumkh EISNAM = 119, 28379a452ceShoumkh /// 远程I/O错误 Remote I/O error 28479a452ceShoumkh EREMOTEIO = 120, 28579a452ceShoumkh /// 保留使用 Reserved 28679a452ceShoumkh EDQUOT = 121, 28779a452ceShoumkh /// 没有找到媒介 No medium found 28879a452ceShoumkh ENOMEDIUM = 122, 28979a452ceShoumkh /// 介质类型错误 Wrong medium type 29079a452ceShoumkh EMEDIUMTYPE = 123, 29179a452ceShoumkh /// 操作被取消 Operation canceled. 29279a452ceShoumkh ECANCELED = 124, 29379a452ceShoumkh /// 所需的密钥不可用 Required key not available 29479a452ceShoumkh ENOKEY = 125, 29579a452ceShoumkh /// 密钥已过期 Key has expired 29679a452ceShoumkh EKEYEXPIRED = 126, 29779a452ceShoumkh /// 密钥已被撤销 Key has been revoked 29879a452ceShoumkh EKEYREVOKED = 127, 29979a452ceShoumkh /// 密钥被服务拒绝 Key has been revoked 30079a452ceShoumkh EKEYREJECTED = 128, 30179a452ceShoumkh /// 之前的拥有者挂了 Previous owner died. 30279a452ceShoumkh EOWNERDEAD = 129, 30379a452ceShoumkh /// 状态不可恢复 State not recoverable. 30479a452ceShoumkh ENOTRECOVERABLE = 130, 30540314b30SXiaoye Zheng // VMX on 虚拟化开启指令出错 30640314b30SXiaoye Zheng EVMXONFailed = 131, 30740314b30SXiaoye Zheng // VMX off 虚拟化关闭指令出错 30840314b30SXiaoye Zheng EVMXOFFFailed = 132, 30940314b30SXiaoye Zheng // VMX VMWRITE 写入虚拟化VMCS内存出错 31040314b30SXiaoye Zheng EVMWRITEFailed = 133, 31140314b30SXiaoye Zheng EVMREADFailed = 134, 31240314b30SXiaoye Zheng EVMPRTLDFailed = 135, 31340314b30SXiaoye Zheng EVMLAUNCHFailed = 136, 31440314b30SXiaoye Zheng KVM_HVA_ERR_BAD = 137, 3154454d1a2Slogin } 316676b8ef6SMork 317676b8ef6SMork impl SystemError { 318676b8ef6SMork /// @brief 把posix错误码转换为系统错误枚举类型。 319676b8ef6SMork pub fn from_posix_errno(errno: i32) -> Option<SystemError> { 320676b8ef6SMork // posix 错误码是小于0的 321676b8ef6SMork if errno >= 0 { 322676b8ef6SMork return None; 323676b8ef6SMork } 324676b8ef6SMork return <Self as FromPrimitive>::from_i32(-errno); 325676b8ef6SMork } 326676b8ef6SMork 327676b8ef6SMork /// @brief 把系统错误枚举类型转换为负数posix错误码。 328676b8ef6SMork pub fn to_posix_errno(&self) -> i32 { 329676b8ef6SMork return -<Self as ToPrimitive>::to_i32(self).unwrap(); 330676b8ef6SMork } 331676b8ef6SMork } 332ab5c8ca4Slogin 333ab5c8ca4Slogin // 定义系统调用号 334ad1d649eSGnoCiYeH pub const SYS_READ: usize = 0; 335ad1d649eSGnoCiYeH pub const SYS_WRITE: usize = 1; 336ab5c8ca4Slogin pub const SYS_OPEN: usize = 2; 337ab5c8ca4Slogin pub const SYS_CLOSE: usize = 3; 338ad1d649eSGnoCiYeH #[allow(dead_code)] 339ad1d649eSGnoCiYeH pub const SYS_STAT: usize = 4; 340ad1d649eSGnoCiYeH pub const SYS_FSTAT: usize = 5; 341ab5c8ca4Slogin 342ad1d649eSGnoCiYeH #[allow(dead_code)] 343ad1d649eSGnoCiYeH pub const SYS_POLL: usize = 7; 344ad1d649eSGnoCiYeH pub const SYS_LSEEK: usize = 8; 345ad1d649eSGnoCiYeH pub const SYS_MMAP: usize = 9; 346ad1d649eSGnoCiYeH pub const SYS_MPROTECT: usize = 10; 347ad1d649eSGnoCiYeH pub const SYS_MUNMAP: usize = 11; 348ad1d649eSGnoCiYeH pub const SYS_BRK: usize = 12; 349ad1d649eSGnoCiYeH pub const SYS_SIGACTION: usize = 13; 350ad1d649eSGnoCiYeH #[allow(dead_code)] 351ad1d649eSGnoCiYeH pub const SYS_RT_SIGPROCMASK: usize = 14; 352ad1d649eSGnoCiYeH 353ad1d649eSGnoCiYeH pub const SYS_RT_SIGRETURN: usize = 15; 354ad1d649eSGnoCiYeH pub const SYS_IOCTL: usize = 16; 355ad1d649eSGnoCiYeH 356ad1d649eSGnoCiYeH #[allow(dead_code)] 357ad1d649eSGnoCiYeH pub const SYS_WRITEV: usize = 20; 358ad1d649eSGnoCiYeH 359ad1d649eSGnoCiYeH pub const SYS_DUP: usize = 32; 360ad1d649eSGnoCiYeH pub const SYS_DUP2: usize = 33; 361ad1d649eSGnoCiYeH 362ad1d649eSGnoCiYeH pub const SYS_NANOSLEEP: usize = 35; 363ad1d649eSGnoCiYeH 364ad1d649eSGnoCiYeH pub const SYS_GETPID: usize = 39; 365ad1d649eSGnoCiYeH 366ad1d649eSGnoCiYeH pub const SYS_SOCKET: usize = 41; 367ad1d649eSGnoCiYeH pub const SYS_CONNECT: usize = 42; 368ad1d649eSGnoCiYeH pub const SYS_ACCEPT: usize = 43; 369ad1d649eSGnoCiYeH pub const SYS_SENDTO: usize = 44; 370ad1d649eSGnoCiYeH pub const SYS_RECVFROM: usize = 45; 371ad1d649eSGnoCiYeH 372ad1d649eSGnoCiYeH pub const SYS_RECVMSG: usize = 47; 373ad1d649eSGnoCiYeH pub const SYS_SHUTDOWN: usize = 48; 374ad1d649eSGnoCiYeH pub const SYS_BIND: usize = 49; 375ad1d649eSGnoCiYeH pub const SYS_LISTEN: usize = 50; 376ad1d649eSGnoCiYeH pub const SYS_GETSOCKNAME: usize = 51; 377ad1d649eSGnoCiYeH pub const SYS_GETPEERNAME: usize = 52; 378971462beSGnoCiYeH pub const SYS_SOCKET_PAIR: usize = 53; 379ad1d649eSGnoCiYeH pub const SYS_SETSOCKOPT: usize = 54; 380ad1d649eSGnoCiYeH pub const SYS_GETSOCKOPT: usize = 55; 381ad1d649eSGnoCiYeH 382ad1d649eSGnoCiYeH #[allow(dead_code)] 383ad1d649eSGnoCiYeH pub const SYS_CLONE: usize = 56; 384ad1d649eSGnoCiYeH pub const SYS_FORK: usize = 57; 385ad1d649eSGnoCiYeH pub const SYS_VFORK: usize = 58; 386ad1d649eSGnoCiYeH pub const SYS_EXECVE: usize = 59; 387ad1d649eSGnoCiYeH pub const SYS_EXIT: usize = 60; 388ad1d649eSGnoCiYeH pub const SYS_WAIT4: usize = 61; 389ad1d649eSGnoCiYeH pub const SYS_KILL: usize = 62; 390ad1d649eSGnoCiYeH 391ad1d649eSGnoCiYeH pub const SYS_FCNTL: usize = 72; 392ad1d649eSGnoCiYeH 393ad1d649eSGnoCiYeH pub const SYS_FTRUNCATE: usize = 77; 394ad1d649eSGnoCiYeH pub const SYS_GET_DENTS: usize = 78; 395ad1d649eSGnoCiYeH 396ad1d649eSGnoCiYeH pub const SYS_GETCWD: usize = 79; 397ad1d649eSGnoCiYeH 398ad1d649eSGnoCiYeH pub const SYS_CHDIR: usize = 80; 399ad1d649eSGnoCiYeH 400ad1d649eSGnoCiYeH pub const SYS_MKDIR: usize = 83; 401ad1d649eSGnoCiYeH 402ad1d649eSGnoCiYeH pub const SYS_GETTIMEOFDAY: usize = 96; 403ad1d649eSGnoCiYeH 404ad1d649eSGnoCiYeH #[allow(dead_code)] 405ad1d649eSGnoCiYeH pub const SYS_SIGALTSTACK: usize = 131; 406ad1d649eSGnoCiYeH 407ad1d649eSGnoCiYeH #[allow(dead_code)] 408ad1d649eSGnoCiYeH pub const SYS_ARCH_PRCTL: usize = 158; 409ad1d649eSGnoCiYeH 410ad1d649eSGnoCiYeH pub const SYS_REBOOT: usize = 169; 411ad1d649eSGnoCiYeH 412ad1d649eSGnoCiYeH pub const SYS_GETPPID: usize = 110; 413ad1d649eSGnoCiYeH pub const SYS_GETPGID: usize = 121; 414ad1d649eSGnoCiYeH 415ad1d649eSGnoCiYeH pub const SYS_MKNOD: usize = 133; 416ad1d649eSGnoCiYeH 417ad1d649eSGnoCiYeH #[allow(dead_code)] 418ad1d649eSGnoCiYeH pub const SYS_TKILL: usize = 200; 419ad1d649eSGnoCiYeH 420ad1d649eSGnoCiYeH #[allow(dead_code)] 421ad1d649eSGnoCiYeH pub const SYS_FUTEX: usize = 202; 422ad1d649eSGnoCiYeH 423ad1d649eSGnoCiYeH pub const SYS_GET_DENTS_64: usize = 217; 424ad1d649eSGnoCiYeH #[allow(dead_code)] 425ad1d649eSGnoCiYeH pub const SYS_SET_TID_ADDR: usize = 218; 426ad1d649eSGnoCiYeH 427*16033951SGnoCiYeH pub const SYS_EXIT_GROUP: usize = 231; 428*16033951SGnoCiYeH 429ad1d649eSGnoCiYeH pub const SYS_UNLINK_AT: usize = 263; 430ad1d649eSGnoCiYeH 431ad1d649eSGnoCiYeH pub const SYS_PIPE: usize = 293; 432ad1d649eSGnoCiYeH 433ad1d649eSGnoCiYeH #[allow(dead_code)] 434ad1d649eSGnoCiYeH pub const SYS_GET_RANDOM: usize = 318; 435ad1d649eSGnoCiYeH 436ad1d649eSGnoCiYeH // 与linux不一致的调用,在linux基础上累加 437ad1d649eSGnoCiYeH pub const SYS_PUT_STRING: usize = 100000; 438ad1d649eSGnoCiYeH pub const SYS_SBRK: usize = 100001; 439ab5c8ca4Slogin /// 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 440ad1d649eSGnoCiYeH pub const SYS_CLOCK: usize = 100002; 441ad1d649eSGnoCiYeH pub const SYS_SCHED: usize = 100003; 44240314b30SXiaoye Zheng 443ab5c8ca4Slogin #[derive(Debug)] 444ab5c8ca4Slogin pub struct Syscall; 445ab5c8ca4Slogin 446ab5c8ca4Slogin extern "C" { 447ab5c8ca4Slogin fn do_put_string(s: *const u8, front_color: u32, back_color: u32) -> usize; 448ab5c8ca4Slogin } 449ab5c8ca4Slogin 450ab5c8ca4Slogin #[no_mangle] 451ab5c8ca4Slogin pub extern "C" fn syscall_init() -> i32 { 452ab5c8ca4Slogin kinfo!("Initializing syscall..."); 453ab5c8ca4Slogin Syscall::init().expect("syscall init failed"); 454ab5c8ca4Slogin kinfo!("Syscall init successfully!"); 455ab5c8ca4Slogin return 0; 456ab5c8ca4Slogin } 457ab5c8ca4Slogin 458ab5c8ca4Slogin impl Syscall { 459ab5c8ca4Slogin /// 初始化系统调用 460ab5c8ca4Slogin pub fn init() -> Result<(), SystemError> { 461ab5c8ca4Slogin static INIT_FLAG: AtomicBool = AtomicBool::new(false); 462ab5c8ca4Slogin let prev = INIT_FLAG.swap(true, Ordering::SeqCst); 463ab5c8ca4Slogin if prev { 464ab5c8ca4Slogin panic!("Cannot initialize syscall more than once!"); 465ab5c8ca4Slogin } 466ab5c8ca4Slogin return crate::arch::syscall::arch_syscall_init(); 467ab5c8ca4Slogin } 468ab5c8ca4Slogin /// @brief 系统调用分发器,用于分发系统调用。 469ab5c8ca4Slogin /// 470ab5c8ca4Slogin /// 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。 471ab5c8ca4Slogin /// 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。 4729e9ffedfSPlucky923 pub fn handle( 4739e9ffedfSPlucky923 syscall_num: usize, 4749e9ffedfSPlucky923 args: &[usize], 4759e9ffedfSPlucky923 frame: &mut TrapFrame, 4769e9ffedfSPlucky923 ) -> Result<usize, SystemError> { 477ab5c8ca4Slogin let r = match syscall_num { 478ab5c8ca4Slogin SYS_PUT_STRING => { 479ab5c8ca4Slogin Self::put_string(args[0] as *const u8, args[1] as u32, args[2] as u32) 480ab5c8ca4Slogin } 481ab5c8ca4Slogin SYS_OPEN => { 482ab5c8ca4Slogin let path: &CStr = unsafe { CStr::from_ptr(args[0] as *const c_char) }; 483ab5c8ca4Slogin let path: Result<&str, core::str::Utf8Error> = path.to_str(); 484ab5c8ca4Slogin let res = if path.is_err() { 485ab5c8ca4Slogin Err(SystemError::EINVAL) 486ab5c8ca4Slogin } else { 487ab5c8ca4Slogin let path: &str = path.unwrap(); 48834e6d6c8Syuyi2439 489ab5c8ca4Slogin let flags = args[1]; 490ab5c8ca4Slogin let open_flags: FileMode = FileMode::from_bits_truncate(flags as u32); 491ab5c8ca4Slogin Self::open(path, open_flags) 492ab5c8ca4Slogin }; 4936d81180bSLoGin 494ab5c8ca4Slogin res 495ab5c8ca4Slogin } 496ab5c8ca4Slogin SYS_CLOSE => { 497ab5c8ca4Slogin let fd = args[0]; 49834e6d6c8Syuyi2439 49934e6d6c8Syuyi2439 let res = Self::close(fd); 50034e6d6c8Syuyi2439 50134e6d6c8Syuyi2439 res 502ab5c8ca4Slogin } 503ab5c8ca4Slogin SYS_READ => { 504ab5c8ca4Slogin let fd = args[0] as i32; 505ab5c8ca4Slogin let buf_vaddr = args[1]; 506ab5c8ca4Slogin let len = args[2]; 5079e9ffedfSPlucky923 let from_user = frame.from_user(); 5089e9ffedfSPlucky923 let mut user_buffer_writer = 5099e9ffedfSPlucky923 UserBufferWriter::new(buf_vaddr as *mut u8, len, from_user)?; 5106d81180bSLoGin 5119e9ffedfSPlucky923 let user_buf = user_buffer_writer.buffer(0)?; 5129e9ffedfSPlucky923 let res = Self::read(fd, user_buf); 513ab5c8ca4Slogin res 514ab5c8ca4Slogin } 515ab5c8ca4Slogin SYS_WRITE => { 516ab5c8ca4Slogin let fd = args[0] as i32; 517ab5c8ca4Slogin let buf_vaddr = args[1]; 518ab5c8ca4Slogin let len = args[2]; 5199e9ffedfSPlucky923 let from_user = frame.from_user(); 5209e9ffedfSPlucky923 let user_buffer_reader = 5219e9ffedfSPlucky923 UserBufferReader::new(buf_vaddr as *const u8, len, from_user)?; 5226d81180bSLoGin 5239e9ffedfSPlucky923 let user_buf = user_buffer_reader.read_from_user(0)?; 5249e9ffedfSPlucky923 let res = Self::write(fd, user_buf); 525ab5c8ca4Slogin res 526ab5c8ca4Slogin } 527ab5c8ca4Slogin 528ab5c8ca4Slogin SYS_LSEEK => { 529ab5c8ca4Slogin let fd = args[0] as i32; 530ab5c8ca4Slogin let offset = args[1] as i64; 531ab5c8ca4Slogin let whence = args[2] as u32; 532ab5c8ca4Slogin 533ab5c8ca4Slogin let w = match whence { 534ab5c8ca4Slogin SEEK_SET => Ok(SeekFrom::SeekSet(offset)), 535ab5c8ca4Slogin SEEK_CUR => Ok(SeekFrom::SeekCurrent(offset)), 536ab5c8ca4Slogin SEEK_END => Ok(SeekFrom::SeekEnd(offset)), 537ab5c8ca4Slogin SEEK_MAX => Ok(SeekFrom::SeekEnd(0)), 538ab5c8ca4Slogin _ => Err(SystemError::EINVAL), 5399e9ffedfSPlucky923 }?; 540ab5c8ca4Slogin 541ab5c8ca4Slogin Self::lseek(fd, w) 542ab5c8ca4Slogin } 54340314b30SXiaoye Zheng SYS_IOCTL => { 54440314b30SXiaoye Zheng let fd = args[0]; 54540314b30SXiaoye Zheng let cmd = args[1]; 54640314b30SXiaoye Zheng let data = args[2]; 54740314b30SXiaoye Zheng Self::ioctl(fd, cmd as u32, data) 54840314b30SXiaoye Zheng } 549ab5c8ca4Slogin 5501496ba7bSLoGin SYS_FORK => Self::fork(frame), 5511496ba7bSLoGin SYS_VFORK => Self::vfork(frame), 5521496ba7bSLoGin 553ab5c8ca4Slogin SYS_BRK => { 55440fe15e0SLoGin let new_brk = VirtAddr::new(args[0]); 55540fe15e0SLoGin Self::brk(new_brk).map(|vaddr| vaddr.data()) 556ab5c8ca4Slogin } 557ab5c8ca4Slogin 558ab5c8ca4Slogin SYS_SBRK => { 559ab5c8ca4Slogin let increment = args[0] as isize; 5601496ba7bSLoGin Self::sbrk(increment).map(|vaddr: VirtAddr| vaddr.data()) 561ab5c8ca4Slogin } 562ab5c8ca4Slogin 563ab5c8ca4Slogin SYS_REBOOT => Self::reboot(), 564ab5c8ca4Slogin 565ab5c8ca4Slogin SYS_CHDIR => { 566ab5c8ca4Slogin // Closure for checking arguments 567ab5c8ca4Slogin let chdir_check = |arg0: usize| { 568ab5c8ca4Slogin if arg0 == 0 { 569ab5c8ca4Slogin return Err(SystemError::EFAULT); 570ab5c8ca4Slogin } 571ab5c8ca4Slogin let path_ptr = arg0 as *const c_char; 572be63f3b2Shoumkh let virt_addr = VirtAddr::new(path_ptr as usize); 573ab5c8ca4Slogin // 权限校验 574ab5c8ca4Slogin if path_ptr.is_null() 5751496ba7bSLoGin || (frame.from_user() 5761496ba7bSLoGin && verify_area(virt_addr, PAGE_2M_SIZE as usize).is_err()) 577ab5c8ca4Slogin { 578ab5c8ca4Slogin return Err(SystemError::EINVAL); 579ab5c8ca4Slogin } 580ab5c8ca4Slogin let dest_path: &CStr = unsafe { CStr::from_ptr(path_ptr) }; 581ab5c8ca4Slogin let dest_path: &str = dest_path.to_str().map_err(|_| SystemError::EINVAL)?; 582ab5c8ca4Slogin if dest_path.len() == 0 { 583ab5c8ca4Slogin return Err(SystemError::EINVAL); 5841496ba7bSLoGin } else if dest_path.len() > MAX_PATHLEN as usize { 585ab5c8ca4Slogin return Err(SystemError::ENAMETOOLONG); 586ab5c8ca4Slogin } 587ab5c8ca4Slogin 588ab5c8ca4Slogin return Ok(dest_path); 589ab5c8ca4Slogin }; 590ab5c8ca4Slogin 5919e9ffedfSPlucky923 let r = chdir_check(args[0])?; 5929e9ffedfSPlucky923 Self::chdir(r) 593ab5c8ca4Slogin } 594ab5c8ca4Slogin 595ad1d649eSGnoCiYeH SYS_GET_DENTS | SYS_GET_DENTS_64 => { 596ab5c8ca4Slogin let fd = args[0] as i32; 59734e6d6c8Syuyi2439 598ab5c8ca4Slogin let buf_vaddr = args[1]; 599ab5c8ca4Slogin let len = args[2]; 600f5df0e79SLoGin let virt_addr: VirtAddr = VirtAddr::new(buf_vaddr); 601ab5c8ca4Slogin // 判断缓冲区是否来自用户态,进行权限校验 6021496ba7bSLoGin let res = if frame.from_user() && verify_area(virt_addr, len as usize).is_err() { 603ab5c8ca4Slogin // 来自用户态,而buffer在内核态,这样的操作不被允许 604ab5c8ca4Slogin Err(SystemError::EPERM) 605ab5c8ca4Slogin } else if buf_vaddr == 0 { 606ab5c8ca4Slogin Err(SystemError::EFAULT) 607ab5c8ca4Slogin } else { 608ab5c8ca4Slogin let buf: &mut [u8] = unsafe { 609ab5c8ca4Slogin core::slice::from_raw_parts_mut::<'static, u8>(buf_vaddr as *mut u8, len) 610ab5c8ca4Slogin }; 611ab5c8ca4Slogin Self::getdents(fd, buf) 612ab5c8ca4Slogin }; 613ab5c8ca4Slogin 614ab5c8ca4Slogin res 615ab5c8ca4Slogin } 616ab5c8ca4Slogin 617ab5c8ca4Slogin SYS_EXECVE => { 618ab5c8ca4Slogin let path_ptr = args[0]; 619ab5c8ca4Slogin let argv_ptr = args[1]; 620ab5c8ca4Slogin let env_ptr = args[2]; 621be63f3b2Shoumkh let virt_path_ptr = VirtAddr::new(path_ptr); 622be63f3b2Shoumkh let virt_argv_ptr = VirtAddr::new(argv_ptr); 623be63f3b2Shoumkh let virt_env_ptr = VirtAddr::new(env_ptr); 624ab5c8ca4Slogin // 权限校验 6251496ba7bSLoGin if frame.from_user() 6261496ba7bSLoGin && (verify_area(virt_path_ptr, MAX_PATHLEN as usize).is_err() 627be63f3b2Shoumkh || verify_area(virt_argv_ptr, PAGE_4K_SIZE as usize).is_err()) 628be63f3b2Shoumkh || verify_area(virt_env_ptr, PAGE_4K_SIZE as usize).is_err() 629ab5c8ca4Slogin { 630ab5c8ca4Slogin Err(SystemError::EFAULT) 631ab5c8ca4Slogin } else { 632ab5c8ca4Slogin Self::execve( 6331496ba7bSLoGin path_ptr as *const u8, 6341496ba7bSLoGin argv_ptr as *const *const u8, 6351496ba7bSLoGin env_ptr as *const *const u8, 6361496ba7bSLoGin frame, 637ab5c8ca4Slogin ) 6381496ba7bSLoGin .map(|_| 0) 639ab5c8ca4Slogin } 640ab5c8ca4Slogin } 641ab5c8ca4Slogin SYS_WAIT4 => { 6421496ba7bSLoGin let pid = args[0] as i64; 6431496ba7bSLoGin let wstatus = args[1] as *mut i32; 644ab5c8ca4Slogin let options = args[2] as c_int; 645ab5c8ca4Slogin let rusage = args[3] as *mut c_void; 646ab5c8ca4Slogin // 权限校验 647ab5c8ca4Slogin // todo: 引入rusage之后,更正以下权限校验代码中,rusage的大小 648ab5c8ca4Slogin Self::wait4(pid, wstatus, options, rusage) 649ab5c8ca4Slogin } 650ab5c8ca4Slogin 651ab5c8ca4Slogin SYS_EXIT => { 652ab5c8ca4Slogin let exit_code = args[0]; 653ab5c8ca4Slogin Self::exit(exit_code) 654ab5c8ca4Slogin } 655ab5c8ca4Slogin SYS_MKDIR => { 656ab5c8ca4Slogin let path_ptr = args[0] as *const c_char; 657ab5c8ca4Slogin let mode = args[1]; 658be63f3b2Shoumkh let virt_path_ptr = VirtAddr::new(path_ptr as usize); 659ab5c8ca4Slogin let security_check = || { 660ab5c8ca4Slogin if path_ptr.is_null() 6611496ba7bSLoGin || (frame.from_user() 6621496ba7bSLoGin && verify_area(virt_path_ptr, PAGE_2M_SIZE as usize).is_err()) 663ab5c8ca4Slogin { 664ab5c8ca4Slogin return Err(SystemError::EINVAL); 665ab5c8ca4Slogin } 666ab5c8ca4Slogin let path: &CStr = unsafe { CStr::from_ptr(path_ptr) }; 667ab5c8ca4Slogin let path: &str = path.to_str().map_err(|_| SystemError::EINVAL)?.trim(); 668ab5c8ca4Slogin 669ab5c8ca4Slogin if path == "" { 670ab5c8ca4Slogin return Err(SystemError::EINVAL); 671ab5c8ca4Slogin } 672ab5c8ca4Slogin return Ok(path); 673ab5c8ca4Slogin }; 674ab5c8ca4Slogin 675ab5c8ca4Slogin let path = security_check(); 676ab5c8ca4Slogin if path.is_err() { 677ab5c8ca4Slogin Err(path.unwrap_err()) 678ab5c8ca4Slogin } else { 679ab5c8ca4Slogin Self::mkdir(path.unwrap(), mode) 680ab5c8ca4Slogin } 681ab5c8ca4Slogin } 682ab5c8ca4Slogin 683ab5c8ca4Slogin SYS_NANOSLEEP => { 684ab5c8ca4Slogin let req = args[0] as *const TimeSpec; 685ab5c8ca4Slogin let rem = args[1] as *mut TimeSpec; 686be63f3b2Shoumkh let virt_req = VirtAddr::new(req as usize); 687be63f3b2Shoumkh let virt_rem = VirtAddr::new(rem as usize); 6881496ba7bSLoGin if frame.from_user() 689be63f3b2Shoumkh && (verify_area(virt_req, core::mem::size_of::<TimeSpec>() as usize).is_err() 690be63f3b2Shoumkh || verify_area(virt_rem, core::mem::size_of::<TimeSpec>() as usize) 691be63f3b2Shoumkh .is_err()) 692ab5c8ca4Slogin { 693ab5c8ca4Slogin Err(SystemError::EFAULT) 694ab5c8ca4Slogin } else { 695ab5c8ca4Slogin Self::nanosleep(req, rem) 696ab5c8ca4Slogin } 697ab5c8ca4Slogin } 698ab5c8ca4Slogin 699ab5c8ca4Slogin SYS_CLOCK => Self::clock(), 700ab5c8ca4Slogin SYS_PIPE => { 70122c9db31Shanjiezhou let pipefd: *mut i32 = args[0] as *mut c_int; 70222c9db31Shanjiezhou let arg1 = args[1]; 70322c9db31Shanjiezhou if pipefd.is_null() { 70422c9db31Shanjiezhou Err(SystemError::EFAULT) 70522c9db31Shanjiezhou } else { 70622c9db31Shanjiezhou let flags = FileMode::from_bits_truncate(arg1 as u32); 70722c9db31Shanjiezhou Self::pipe2(pipefd, flags) 708ab5c8ca4Slogin } 709ab5c8ca4Slogin } 710ab5c8ca4Slogin 711ab5c8ca4Slogin SYS_UNLINK_AT => { 712ab5c8ca4Slogin let dirfd = args[0] as i32; 713ab5c8ca4Slogin let pathname = args[1] as *const c_char; 714ab5c8ca4Slogin let flags = args[2] as u32; 715be63f3b2Shoumkh let virt_pathname = VirtAddr::new(pathname as usize); 7161496ba7bSLoGin if frame.from_user() && verify_area(virt_pathname, PAGE_4K_SIZE as usize).is_err() { 717ab5c8ca4Slogin Err(SystemError::EFAULT) 718ab5c8ca4Slogin } else if pathname.is_null() { 719ab5c8ca4Slogin Err(SystemError::EFAULT) 720ab5c8ca4Slogin } else { 721ab5c8ca4Slogin let get_path = || { 722ab5c8ca4Slogin let pathname: &CStr = unsafe { CStr::from_ptr(pathname) }; 723ab5c8ca4Slogin 724ab5c8ca4Slogin let pathname: &str = pathname.to_str().map_err(|_| SystemError::EINVAL)?; 725ab5c8ca4Slogin if pathname.len() >= MAX_PATHLEN { 726ab5c8ca4Slogin return Err(SystemError::ENAMETOOLONG); 727ab5c8ca4Slogin } 728ab5c8ca4Slogin return Ok(pathname.trim()); 729ab5c8ca4Slogin }; 730ab5c8ca4Slogin let pathname = get_path(); 731ab5c8ca4Slogin if pathname.is_err() { 732ab5c8ca4Slogin Err(pathname.unwrap_err()) 733ab5c8ca4Slogin } else { 7346d81180bSLoGin // kdebug!("sys unlinkat: dirfd: {}, pathname: {}", dirfd, pathname.as_ref().unwrap()); 735ab5c8ca4Slogin Self::unlinkat(dirfd, pathname.unwrap(), flags) 736ab5c8ca4Slogin } 737ab5c8ca4Slogin } 738ab5c8ca4Slogin } 739ab5c8ca4Slogin SYS_KILL => { 7401496ba7bSLoGin let pid = Pid::new(args[0]); 741ab5c8ca4Slogin let sig = args[1] as c_int; 7423c82aa56SChiichen // kdebug!("KILL SYSCALL RECEIVED"); 743ab5c8ca4Slogin Self::kill(pid, sig) 744ab5c8ca4Slogin } 745ab5c8ca4Slogin 746ab5c8ca4Slogin SYS_SIGACTION => { 747ab5c8ca4Slogin let sig = args[0] as c_int; 748ab5c8ca4Slogin let act = args[1]; 749ab5c8ca4Slogin let old_act = args[2]; 7501496ba7bSLoGin Self::sigaction(sig, act, old_act, frame.from_user()) 751ab5c8ca4Slogin } 752ab5c8ca4Slogin 753ab5c8ca4Slogin SYS_RT_SIGRETURN => { 754ab5c8ca4Slogin // 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 755ab5c8ca4Slogin // todo: 未来需要将signal机制与平台解耦 756ab5c8ca4Slogin todo!() 757ab5c8ca4Slogin } 758ab5c8ca4Slogin 7591496ba7bSLoGin SYS_GETPID => Self::getpid().map(|pid| pid.into()), 760ab5c8ca4Slogin 7611496ba7bSLoGin SYS_SCHED => Self::sched(frame.from_user()), 762ab5c8ca4Slogin SYS_DUP => { 763ab5c8ca4Slogin let oldfd: i32 = args[0] as c_int; 764ab5c8ca4Slogin Self::dup(oldfd) 765ab5c8ca4Slogin } 766ab5c8ca4Slogin SYS_DUP2 => { 767ab5c8ca4Slogin let oldfd: i32 = args[0] as c_int; 768ab5c8ca4Slogin let newfd: i32 = args[1] as c_int; 769ab5c8ca4Slogin Self::dup2(oldfd, newfd) 770ab5c8ca4Slogin } 771ab5c8ca4Slogin 772ab5c8ca4Slogin SYS_SOCKET => Self::socket(args[0], args[1], args[2]), 773ab5c8ca4Slogin SYS_SETSOCKOPT => { 774ab5c8ca4Slogin let optval = args[3] as *const u8; 775ab5c8ca4Slogin let optlen = args[4] as usize; 776be63f3b2Shoumkh let virt_optval = VirtAddr::new(optval as usize); 777ab5c8ca4Slogin // 验证optval的地址是否合法 778be63f3b2Shoumkh if verify_area(virt_optval, optlen as usize).is_err() { 779ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 780ab5c8ca4Slogin Err(SystemError::EFAULT) 781ab5c8ca4Slogin } else { 782ab5c8ca4Slogin let data: &[u8] = unsafe { core::slice::from_raw_parts(optval, optlen) }; 783ab5c8ca4Slogin Self::setsockopt(args[0], args[1], args[2], data) 784ab5c8ca4Slogin } 785ab5c8ca4Slogin } 786ab5c8ca4Slogin SYS_GETSOCKOPT => { 787ab5c8ca4Slogin let optval = args[3] as *mut u8; 788ab5c8ca4Slogin let optlen = args[4] as *mut usize; 789be63f3b2Shoumkh let virt_optval = VirtAddr::new(optval as usize); 790be63f3b2Shoumkh let virt_optlen = VirtAddr::new(optlen as usize); 791ab5c8ca4Slogin let security_check = || { 792ab5c8ca4Slogin // 验证optval的地址是否合法 793be63f3b2Shoumkh if verify_area(virt_optval, PAGE_4K_SIZE as usize).is_err() { 794ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 795ab5c8ca4Slogin return Err(SystemError::EFAULT); 796ab5c8ca4Slogin } 797ab5c8ca4Slogin 798ab5c8ca4Slogin // 验证optlen的地址是否合法 799be63f3b2Shoumkh if verify_area(virt_optlen, core::mem::size_of::<u32>() as usize).is_err() { 800ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 801ab5c8ca4Slogin return Err(SystemError::EFAULT); 802ab5c8ca4Slogin } 803ab5c8ca4Slogin return Ok(()); 804ab5c8ca4Slogin }; 805ab5c8ca4Slogin let r = security_check(); 806ab5c8ca4Slogin if r.is_err() { 807ab5c8ca4Slogin Err(r.unwrap_err()) 808ab5c8ca4Slogin } else { 809ab5c8ca4Slogin Self::getsockopt(args[0], args[1], args[2], optval, optlen as *mut u32) 810ab5c8ca4Slogin } 811ab5c8ca4Slogin } 812ab5c8ca4Slogin 813ab5c8ca4Slogin SYS_CONNECT => { 814ab5c8ca4Slogin let addr = args[1] as *const SockAddr; 815ab5c8ca4Slogin let addrlen = args[2] as usize; 816be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 817ab5c8ca4Slogin // 验证addr的地址是否合法 818be63f3b2Shoumkh if verify_area(virt_addr, addrlen as usize).is_err() { 819ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 820ab5c8ca4Slogin Err(SystemError::EFAULT) 821ab5c8ca4Slogin } else { 822ab5c8ca4Slogin Self::connect(args[0], addr, addrlen) 823ab5c8ca4Slogin } 824ab5c8ca4Slogin } 825ab5c8ca4Slogin SYS_BIND => { 826ab5c8ca4Slogin let addr = args[1] as *const SockAddr; 827ab5c8ca4Slogin let addrlen = args[2] as usize; 828be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 829ab5c8ca4Slogin // 验证addr的地址是否合法 830be63f3b2Shoumkh if verify_area(virt_addr, addrlen as usize).is_err() { 831ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 832ab5c8ca4Slogin Err(SystemError::EFAULT) 833ab5c8ca4Slogin } else { 834ab5c8ca4Slogin Self::bind(args[0], addr, addrlen) 835ab5c8ca4Slogin } 836ab5c8ca4Slogin } 837ab5c8ca4Slogin 838ab5c8ca4Slogin SYS_SENDTO => { 839ab5c8ca4Slogin let buf = args[1] as *const u8; 840ab5c8ca4Slogin let len = args[2] as usize; 841ab5c8ca4Slogin let flags = args[3] as u32; 842ab5c8ca4Slogin let addr = args[4] as *const SockAddr; 843ab5c8ca4Slogin let addrlen = args[5] as usize; 844be63f3b2Shoumkh let virt_buf = VirtAddr::new(buf as usize); 845be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 846ab5c8ca4Slogin // 验证buf的地址是否合法 847be63f3b2Shoumkh if verify_area(virt_buf, len as usize).is_err() { 848ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 849ab5c8ca4Slogin Err(SystemError::EFAULT) 850be63f3b2Shoumkh } else 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 let data: &[u8] = unsafe { core::slice::from_raw_parts(buf, len) }; 855ab5c8ca4Slogin Self::sendto(args[0], data, flags, addr, addrlen) 856ab5c8ca4Slogin } 857ab5c8ca4Slogin } 858ab5c8ca4Slogin 859ab5c8ca4Slogin SYS_RECVFROM => { 860ab5c8ca4Slogin let buf = args[1] as *mut u8; 861ab5c8ca4Slogin let len = args[2] as usize; 862ab5c8ca4Slogin let flags = args[3] as u32; 863ab5c8ca4Slogin let addr = args[4] as *mut SockAddr; 864ab5c8ca4Slogin let addrlen = args[5] as *mut usize; 865be63f3b2Shoumkh let virt_buf = VirtAddr::new(buf as usize); 866be63f3b2Shoumkh let virt_addrlen = VirtAddr::new(addrlen as usize); 867be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 868ab5c8ca4Slogin let security_check = || { 869ab5c8ca4Slogin // 验证buf的地址是否合法 870be63f3b2Shoumkh if verify_area(virt_buf, len as usize).is_err() { 871ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 872ab5c8ca4Slogin return Err(SystemError::EFAULT); 873ab5c8ca4Slogin } 874ab5c8ca4Slogin 875ab5c8ca4Slogin // 验证addrlen的地址是否合法 876be63f3b2Shoumkh if verify_area(virt_addrlen, core::mem::size_of::<u32>() as usize).is_err() { 877ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 878ab5c8ca4Slogin return Err(SystemError::EFAULT); 879ab5c8ca4Slogin } 880ab5c8ca4Slogin 881be63f3b2Shoumkh if verify_area(virt_addr, core::mem::size_of::<SockAddr>() as usize).is_err() { 882ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 883ab5c8ca4Slogin return Err(SystemError::EFAULT); 884ab5c8ca4Slogin } 885ab5c8ca4Slogin return Ok(()); 886ab5c8ca4Slogin }; 887ab5c8ca4Slogin let r = security_check(); 888ab5c8ca4Slogin if r.is_err() { 889ab5c8ca4Slogin Err(r.unwrap_err()) 890ab5c8ca4Slogin } else { 891ab5c8ca4Slogin let buf = unsafe { core::slice::from_raw_parts_mut(buf, len) }; 892ab5c8ca4Slogin Self::recvfrom(args[0], buf, flags, addr, addrlen as *mut u32) 893ab5c8ca4Slogin } 894ab5c8ca4Slogin } 895ab5c8ca4Slogin 896ab5c8ca4Slogin SYS_RECVMSG => { 897ab5c8ca4Slogin let msg = args[1] as *mut crate::net::syscall::MsgHdr; 898ab5c8ca4Slogin let flags = args[2] as u32; 8994537ffb7SChiichen match UserBufferWriter::new( 9004537ffb7SChiichen msg, 9014537ffb7SChiichen core::mem::size_of::<crate::net::syscall::MsgHdr>(), 9024537ffb7SChiichen true, 9034537ffb7SChiichen ) { 9044537ffb7SChiichen Err(e) => Err(e), 9054537ffb7SChiichen Ok(mut user_buffer_writer) => { 9064537ffb7SChiichen match user_buffer_writer.buffer::<crate::net::syscall::MsgHdr>(0) { 9074537ffb7SChiichen Err(e) => Err(e), 9084537ffb7SChiichen Ok(buffer) => { 9094537ffb7SChiichen let msg = &mut buffer[0]; 910ab5c8ca4Slogin Self::recvmsg(args[0], msg, flags) 911ab5c8ca4Slogin } 912ab5c8ca4Slogin } 9134537ffb7SChiichen } 9144537ffb7SChiichen } 9154537ffb7SChiichen } 916ab5c8ca4Slogin 917ab5c8ca4Slogin SYS_LISTEN => Self::listen(args[0], args[1]), 918ab5c8ca4Slogin SYS_SHUTDOWN => Self::shutdown(args[0], args[1]), 919ab5c8ca4Slogin SYS_ACCEPT => Self::accept(args[0], args[1] as *mut SockAddr, args[2] as *mut u32), 920ab5c8ca4Slogin SYS_GETSOCKNAME => { 921ab5c8ca4Slogin Self::getsockname(args[0], args[1] as *mut SockAddr, args[2] as *mut u32) 922ab5c8ca4Slogin } 923ab5c8ca4Slogin SYS_GETPEERNAME => { 924ab5c8ca4Slogin Self::getpeername(args[0], args[1] as *mut SockAddr, args[2] as *mut u32) 925ab5c8ca4Slogin } 92636fd0130Shoumkh SYS_GETTIMEOFDAY => { 92736fd0130Shoumkh let timeval = args[0] as *mut PosixTimeval; 92840fe15e0SLoGin let timezone_ptr = args[1] as *mut PosixTimeZone; 92940fe15e0SLoGin Self::gettimeofday(timeval, timezone_ptr) 9304537ffb7SChiichen } 93140fe15e0SLoGin SYS_MMAP => { 93240fe15e0SLoGin let len = page_align_up(args[1]); 933be63f3b2Shoumkh let virt_addr = VirtAddr::new(args[0] as usize); 934be63f3b2Shoumkh if verify_area(virt_addr, len as usize).is_err() { 93540fe15e0SLoGin Err(SystemError::EFAULT) 93640fe15e0SLoGin } else { 93740fe15e0SLoGin Self::mmap( 93840fe15e0SLoGin VirtAddr::new(args[0]), 93940fe15e0SLoGin len, 94040fe15e0SLoGin args[2], 94140fe15e0SLoGin args[3], 94240fe15e0SLoGin args[4] as i32, 94340fe15e0SLoGin args[5], 94440fe15e0SLoGin ) 94540fe15e0SLoGin } 94640fe15e0SLoGin } 94740fe15e0SLoGin SYS_MUNMAP => { 94840fe15e0SLoGin let addr = args[0]; 94940fe15e0SLoGin let len = page_align_up(args[1]); 950971462beSGnoCiYeH if addr & (MMArch::PAGE_SIZE - 1) != 0 { 95140fe15e0SLoGin // The addr argument is not a multiple of the page size 95240fe15e0SLoGin Err(SystemError::EINVAL) 95340fe15e0SLoGin } else { 95440fe15e0SLoGin Self::munmap(VirtAddr::new(addr), len) 95540fe15e0SLoGin } 95640fe15e0SLoGin } 95740fe15e0SLoGin SYS_MPROTECT => { 95840fe15e0SLoGin let addr = args[0]; 95940fe15e0SLoGin let len = page_align_up(args[1]); 960971462beSGnoCiYeH if addr & (MMArch::PAGE_SIZE - 1) != 0 { 96140fe15e0SLoGin // The addr argument is not a multiple of the page size 96240fe15e0SLoGin Err(SystemError::EINVAL) 96340fe15e0SLoGin } else { 96440fe15e0SLoGin Self::mprotect(VirtAddr::new(addr), len, args[2]) 96540fe15e0SLoGin } 96640fe15e0SLoGin } 96740fe15e0SLoGin 9681496ba7bSLoGin SYS_GETCWD => { 9691496ba7bSLoGin let buf = args[0] as *mut u8; 9701496ba7bSLoGin let size = args[1] as usize; 9711496ba7bSLoGin let security_check = || { 9721496ba7bSLoGin verify_area(VirtAddr::new(buf as usize), size)?; 9731496ba7bSLoGin return Ok(()); 9741496ba7bSLoGin }; 9751496ba7bSLoGin let r = security_check(); 9761496ba7bSLoGin if r.is_err() { 9771496ba7bSLoGin Err(r.unwrap_err()) 9781496ba7bSLoGin } else { 9791496ba7bSLoGin let buf = unsafe { core::slice::from_raw_parts_mut(buf, size) }; 9801496ba7bSLoGin Self::getcwd(buf).map(|ptr| ptr.data()) 9811496ba7bSLoGin } 9821496ba7bSLoGin } 9831496ba7bSLoGin 9841496ba7bSLoGin SYS_GETPGID => Self::getpgid(Pid::new(args[0])).map(|pid| pid.into()), 9851496ba7bSLoGin 9861496ba7bSLoGin SYS_GETPPID => Self::getppid().map(|pid| pid.into()), 987be63f3b2Shoumkh SYS_FSTAT => { 988be63f3b2Shoumkh let fd = args[0] as i32; 989be63f3b2Shoumkh let kstat = args[1] as *mut PosixKstat; 990be63f3b2Shoumkh let vaddr = VirtAddr::new(kstat as usize); 991be63f3b2Shoumkh // 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 992be63f3b2Shoumkh // TODO 应该将用了c版本的verify_area都改为rust的verify_area 993be63f3b2Shoumkh match verify_area(vaddr, core::mem::size_of::<PosixKstat>()) { 994be63f3b2Shoumkh Ok(_) => Self::fstat(fd, kstat), 995be63f3b2Shoumkh Err(e) => Err(e), 996be63f3b2Shoumkh } 997be63f3b2Shoumkh } 998be63f3b2Shoumkh 9996d81180bSLoGin SYS_FCNTL => { 10006d81180bSLoGin let fd = args[0] as i32; 10016d81180bSLoGin let cmd: Option<FcntlCommand> = 10026d81180bSLoGin <FcntlCommand as FromPrimitive>::from_u32(args[1] as u32); 10036d81180bSLoGin let arg = args[2] as i32; 10046d81180bSLoGin let res = if let Some(cmd) = cmd { 10056d81180bSLoGin Self::fcntl(fd, cmd, arg) 10066d81180bSLoGin } else { 10076d81180bSLoGin Err(SystemError::EINVAL) 10086d81180bSLoGin }; 10096d81180bSLoGin 10106d81180bSLoGin // kdebug!("FCNTL: fd: {}, cmd: {:?}, arg: {}, res: {:?}", fd, cmd, arg, res); 10116d81180bSLoGin res 10126d81180bSLoGin } 10136d81180bSLoGin 10146d81180bSLoGin SYS_FTRUNCATE => { 10156d81180bSLoGin let fd = args[0] as i32; 10166d81180bSLoGin let len = args[1] as usize; 10176d81180bSLoGin let res = Self::ftruncate(fd, len); 10186d81180bSLoGin // kdebug!("FTRUNCATE: fd: {}, len: {}, res: {:?}", fd, len, res); 10196d81180bSLoGin res 10206d81180bSLoGin } 10216d81180bSLoGin 10222dbef785SGnoCiYeH SYS_MKNOD => { 10232dbef785SGnoCiYeH let path = args[0]; 10242dbef785SGnoCiYeH let flags = args[1]; 10252dbef785SGnoCiYeH let dev_t = args[2]; 10262dbef785SGnoCiYeH let flags: ModeType = ModeType::from_bits_truncate(flags as u32); 10272dbef785SGnoCiYeH Self::mknod(path as *const i8, flags, DeviceNumber::from(dev_t)) 10282dbef785SGnoCiYeH } 10292dbef785SGnoCiYeH 1030971462beSGnoCiYeH SYS_CLONE => { 1031971462beSGnoCiYeH let parent_tid = VirtAddr::new(args[2]); 1032971462beSGnoCiYeH let child_tid = VirtAddr::new(args[3]); 1033971462beSGnoCiYeH 1034971462beSGnoCiYeH // 地址校验 1035971462beSGnoCiYeH verify_area(parent_tid, core::mem::size_of::<i32>())?; 1036971462beSGnoCiYeH verify_area(child_tid, core::mem::size_of::<i32>())?; 1037971462beSGnoCiYeH 1038971462beSGnoCiYeH let mut clone_args = KernelCloneArgs::new(); 1039971462beSGnoCiYeH clone_args.flags = CloneFlags::from_bits_truncate(args[0] as u64); 1040971462beSGnoCiYeH clone_args.stack = args[1]; 1041971462beSGnoCiYeH clone_args.parent_tid = parent_tid; 1042971462beSGnoCiYeH clone_args.child_tid = child_tid; 1043971462beSGnoCiYeH clone_args.tls = args[4]; 1044971462beSGnoCiYeH Self::clone(frame, clone_args) 1045971462beSGnoCiYeH } 1046971462beSGnoCiYeH 1047971462beSGnoCiYeH SYS_FUTEX => { 1048971462beSGnoCiYeH let uaddr = VirtAddr::new(args[0]); 1049971462beSGnoCiYeH let operation = FutexFlag::from_bits(args[1] as u32).ok_or(SystemError::ENOSYS)?; 1050971462beSGnoCiYeH let val = args[2] as u32; 1051971462beSGnoCiYeH let utime = args[3]; 1052971462beSGnoCiYeH let uaddr2 = VirtAddr::new(args[4]); 1053971462beSGnoCiYeH let val3 = args[5] as u32; 1054971462beSGnoCiYeH 1055971462beSGnoCiYeH verify_area(uaddr, core::mem::size_of::<u32>())?; 1056971462beSGnoCiYeH verify_area(uaddr2, core::mem::size_of::<u32>())?; 1057971462beSGnoCiYeH 1058971462beSGnoCiYeH let mut timespec = None; 1059971462beSGnoCiYeH if utime != 0 && operation.contains(FutexFlag::FLAGS_HAS_TIMEOUT) { 1060971462beSGnoCiYeH let reader = UserBufferReader::new( 1061971462beSGnoCiYeH utime as *const TimeSpec, 1062971462beSGnoCiYeH core::mem::size_of::<TimeSpec>(), 1063971462beSGnoCiYeH true, 1064971462beSGnoCiYeH )?; 1065971462beSGnoCiYeH 1066971462beSGnoCiYeH timespec = Some(reader.read_one_from_user::<TimeSpec>(0)?.clone()); 1067971462beSGnoCiYeH } 1068971462beSGnoCiYeH 1069971462beSGnoCiYeH Self::do_futex(uaddr, operation, val, timespec, uaddr2, utime as u32, val3) 1070971462beSGnoCiYeH } 1071971462beSGnoCiYeH 1072971462beSGnoCiYeH SYS_WRITEV => Self::writev(args[0] as i32, args[1], args[2]), 1073971462beSGnoCiYeH 1074971462beSGnoCiYeH SYS_ARCH_PRCTL => Self::arch_prctl(args[0], args[1]), 1075971462beSGnoCiYeH 1076971462beSGnoCiYeH SYS_SET_TID_ADDR => Self::set_tid_address(args[0]), 1077971462beSGnoCiYeH 1078971462beSGnoCiYeH SYS_STAT => { 1079971462beSGnoCiYeH let path: &CStr = unsafe { CStr::from_ptr(args[0] as *const c_char) }; 1080971462beSGnoCiYeH let path: Result<&str, core::str::Utf8Error> = path.to_str(); 1081971462beSGnoCiYeH let res = if path.is_err() { 1082971462beSGnoCiYeH Err(SystemError::EINVAL) 1083971462beSGnoCiYeH } else { 1084971462beSGnoCiYeH let path: &str = path.unwrap(); 1085971462beSGnoCiYeH let kstat = args[1] as *mut PosixKstat; 1086971462beSGnoCiYeH let vaddr = VirtAddr::new(kstat as usize); 1087971462beSGnoCiYeH match verify_area(vaddr, core::mem::size_of::<PosixKstat>()) { 1088971462beSGnoCiYeH Ok(_) => Self::stat(path, kstat), 1089971462beSGnoCiYeH Err(e) => Err(e), 1090971462beSGnoCiYeH } 1091971462beSGnoCiYeH }; 1092971462beSGnoCiYeH 1093971462beSGnoCiYeH res 1094971462beSGnoCiYeH } 1095971462beSGnoCiYeH 1096971462beSGnoCiYeH // 目前为了适配musl-libc,以下系统调用先这样写着 1097971462beSGnoCiYeH SYS_GET_RANDOM => { 1098971462beSGnoCiYeH let flags = GRandFlags::from_bits(args[2] as u8).ok_or(SystemError::EINVAL)?; 1099971462beSGnoCiYeH Self::get_random(args[0] as *mut u8, args[1], flags) 1100971462beSGnoCiYeH } 1101971462beSGnoCiYeH 1102971462beSGnoCiYeH SYS_SOCKET_PAIR => { 1103971462beSGnoCiYeH unimplemented!() 1104971462beSGnoCiYeH } 1105971462beSGnoCiYeH 1106971462beSGnoCiYeH SYS_POLL => { 1107971462beSGnoCiYeH kwarn!("SYS_POLL has not yet been implemented"); 1108971462beSGnoCiYeH Ok(0) 1109971462beSGnoCiYeH } 1110971462beSGnoCiYeH 1111971462beSGnoCiYeH SYS_RT_SIGPROCMASK => { 1112971462beSGnoCiYeH kwarn!("SYS_RT_SIGPROCMASK has not yet been implemented"); 1113971462beSGnoCiYeH Ok(0) 1114971462beSGnoCiYeH } 1115971462beSGnoCiYeH 1116971462beSGnoCiYeH SYS_TKILL => { 1117971462beSGnoCiYeH kwarn!("SYS_TKILL has not yet been implemented"); 1118971462beSGnoCiYeH Ok(0) 1119971462beSGnoCiYeH } 1120971462beSGnoCiYeH 1121971462beSGnoCiYeH SYS_SIGALTSTACK => { 1122971462beSGnoCiYeH kwarn!("SYS_SIGALTSTACK has not yet been implemented"); 1123971462beSGnoCiYeH Ok(0) 1124971462beSGnoCiYeH } 1125971462beSGnoCiYeH 1126*16033951SGnoCiYeH SYS_EXIT_GROUP => { 1127*16033951SGnoCiYeH kwarn!("SYS_EXIT_GROUP has not yet been implemented"); 1128*16033951SGnoCiYeH Ok(0) 1129*16033951SGnoCiYeH } 1130*16033951SGnoCiYeH 1131ab5c8ca4Slogin _ => panic!("Unsupported syscall ID: {}", syscall_num), 1132ab5c8ca4Slogin }; 1133ab5c8ca4Slogin return r; 1134ab5c8ca4Slogin } 1135ab5c8ca4Slogin 1136ab5c8ca4Slogin pub fn put_string( 1137ab5c8ca4Slogin s: *const u8, 1138ab5c8ca4Slogin front_color: u32, 1139ab5c8ca4Slogin back_color: u32, 1140ab5c8ca4Slogin ) -> Result<usize, SystemError> { 1141ab5c8ca4Slogin return Ok(unsafe { do_put_string(s, front_color, back_color) }); 1142ab5c8ca4Slogin } 1143ab5c8ca4Slogin 1144ab5c8ca4Slogin pub fn reboot() -> Result<usize, SystemError> { 1145ab5c8ca4Slogin cpu_reset(); 1146ab5c8ca4Slogin } 1147ab5c8ca4Slogin } 1148