1ab5c8ca4Slogin use core::{ 2ab5c8ca4Slogin ffi::{c_char, c_int, c_void, CStr}, 3ab5c8ca4Slogin sync::atomic::{AtomicBool, Ordering}, 4ab5c8ca4Slogin }; 5ab5c8ca4Slogin 6971462beSGnoCiYeH use crate::{ 7*4fda81ceSLoGin arch::syscall::nr::*, 8971462beSGnoCiYeH libs::{futex::constant::FutexFlag, rand::GRandFlags}, 90d9b7d92SLoGin process::{ 100d9b7d92SLoGin fork::KernelCloneArgs, 110d9b7d92SLoGin resource::{RLimit64, RUsage}, 120d9b7d92SLoGin }, 13971462beSGnoCiYeH }; 1440314b30SXiaoye Zheng 15676b8ef6SMork use num_traits::{FromPrimitive, ToPrimitive}; 16676b8ef6SMork 17ab5c8ca4Slogin use crate::{ 181496ba7bSLoGin arch::{cpu::cpu_reset, interrupt::TrapFrame, MMArch}, 19*4fda81ceSLoGin driver::base::block::SeekFrom, 20ab5c8ca4Slogin filesystem::vfs::{ 216d81180bSLoGin fcntl::FcntlCommand, 22ab5c8ca4Slogin file::FileMode, 232dbef785SGnoCiYeH syscall::{ModeType, PosixKstat, SEEK_CUR, SEEK_END, SEEK_MAX, SEEK_SET}, 24ab5c8ca4Slogin MAX_PATHLEN, 25ab5c8ca4Slogin }, 261496ba7bSLoGin include::bindings::bindings::{PAGE_2M_SIZE, PAGE_4K_SIZE}, 27aa0367d6SLoGin kinfo, 2840fe15e0SLoGin libs::align::page_align_up, 29be63f3b2Shoumkh mm::{verify_area, MemoryManagementArch, VirtAddr}, 30ab5c8ca4Slogin net::syscall::SockAddr, 31971462beSGnoCiYeH process::{fork::CloneFlags, Pid}, 3236fd0130Shoumkh time::{ 3340fe15e0SLoGin syscall::{PosixTimeZone, PosixTimeval}, 3436fd0130Shoumkh TimeSpec, 3536fd0130Shoumkh }, 36ab5c8ca4Slogin }; 37ab5c8ca4Slogin 38bf4a4899SLoGin use self::{ 39bf4a4899SLoGin misc::SysInfo, 40bf4a4899SLoGin user_access::{UserBufferReader, UserBufferWriter}, 41bf4a4899SLoGin }; 424537ffb7SChiichen 43bf4a4899SLoGin pub mod misc; 4440fe15e0SLoGin pub mod user_access; 4540fe15e0SLoGin 464454d1a2Slogin #[repr(i32)] 47676b8ef6SMork #[derive(Debug, FromPrimitive, ToPrimitive, PartialEq, Eq, Clone)] 4879a452ceShoumkh #[allow(dead_code, non_camel_case_types)] 494454d1a2Slogin pub enum SystemError { 5070a4e555SLoGin /// 操作不被允许 Operation not permitted. 5179a452ceShoumkh EPERM = 1, 5279a452ceShoumkh /// 没有指定的文件或目录 No such file or directory. 5379a452ceShoumkh ENOENT = 2, 544454d1a2Slogin /// 没有这样的进程 No such process. 5579a452ceShoumkh ESRCH = 3, 5679a452ceShoumkh /// 被中断的函数 Interrupted function. 5779a452ceShoumkh EINTR = 4, 5879a452ceShoumkh /// I/O错误 I/O error. 5979a452ceShoumkh EIO = 5, 6079a452ceShoumkh /// 没有这样的设备或地址 No such device or address. 6179a452ceShoumkh ENXIO = 6, 6279a452ceShoumkh /// 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. 6379a452ceShoumkh E2BIG = 7, 6479a452ceShoumkh /// 可执行文件格式错误 Executable file format error 6579a452ceShoumkh ENOEXEC = 8, 6679a452ceShoumkh /// 错误的文件描述符 Bad file descriptor. 6779a452ceShoumkh EBADF = 9, 6879a452ceShoumkh /// 没有子进程 No child processes. 6979a452ceShoumkh ECHILD = 10, 7079a452ceShoumkh /// 资源不可用,请重试。 Resource unavailable, try again.(may be the same value as [EWOULDBLOCK]) 7179a452ceShoumkh /// 7279a452ceShoumkh /// 操作将被禁止 Operation would block.(may be the same value as [EAGAIN]). 7379a452ceShoumkh EAGAIN_OR_EWOULDBLOCK = 11, 7479a452ceShoumkh /// 没有足够的空间 Not enough space. 7579a452ceShoumkh ENOMEM = 12, 7679a452ceShoumkh /// 访问被拒绝 Permission denied 7779a452ceShoumkh EACCES = 13, 7879a452ceShoumkh /// 错误的地址 Bad address 7979a452ceShoumkh EFAULT = 14, 8079a452ceShoumkh /// 需要块设备 Block device required 8179a452ceShoumkh ENOTBLK = 15, 8279a452ceShoumkh /// 设备或资源忙 Device or resource busy. 8379a452ceShoumkh EBUSY = 16, 8479a452ceShoumkh /// 文件已存在 File exists. 8579a452ceShoumkh EEXIST = 17, 864454d1a2Slogin /// 跨设备连接 Cross-device link. 8779a452ceShoumkh EXDEV = 18, 8879a452ceShoumkh /// 没有指定的设备 No such device. 8979a452ceShoumkh ENODEV = 19, 9079a452ceShoumkh /// 不是目录 Not a directory. 9179a452ceShoumkh ENOTDIR = 20, 9279a452ceShoumkh /// 是一个目录 Is a directory 9379a452ceShoumkh EISDIR = 21, 9479a452ceShoumkh /// 不可用的参数 Invalid argument. 9579a452ceShoumkh EINVAL = 22, 9679a452ceShoumkh /// 系统中打开的文件过多 Too many files open in system. 9779a452ceShoumkh ENFILE = 23, 9879a452ceShoumkh /// 文件描述符的值过大 File descriptor value too large. 9979a452ceShoumkh EMFILE = 24, 10079a452ceShoumkh /// 不正确的I/O控制操作 Inappropriate I/O control operation. 10179a452ceShoumkh ENOTTY = 25, 10279a452ceShoumkh /// 文本文件忙 Text file busy. 10379a452ceShoumkh ETXTBSY = 26, 10479a452ceShoumkh /// 文件太大 File too large. 10579a452ceShoumkh EFBIG = 27, 10679a452ceShoumkh /// 设备上没有空间 No space left on device. 10779a452ceShoumkh ENOSPC = 28, 10879a452ceShoumkh /// 错误的寻道.当前文件是pipe,不允许seek请求 Invalid seek. 10979a452ceShoumkh ESPIPE = 29, 11079a452ceShoumkh /// 只读的文件系统 Read-only file system. 11179a452ceShoumkh EROFS = 30, 11279a452ceShoumkh /// 链接数过多 Too many links. 11379a452ceShoumkh EMLINK = 31, 11479a452ceShoumkh /// 断开的管道 Broken pipe. 11579a452ceShoumkh EPIPE = 32, 11679a452ceShoumkh /// 数学参数超出作用域 Mathematics argument out of domain of function. 11779a452ceShoumkh EDOM = 33, 11879a452ceShoumkh /// 结果过大 Result too large. 11979a452ceShoumkh ERANGE = 34, 12079a452ceShoumkh /// 资源死锁将要发生 Resource deadlock would occur. 12179a452ceShoumkh EDEADLK = 35, 12279a452ceShoumkh /// 文件名过长 Filename too long. 12379a452ceShoumkh ENAMETOOLONG = 36, 12479a452ceShoumkh /// 没有可用的锁 No locks available. 12579a452ceShoumkh ENOLCK = 37, 12679a452ceShoumkh /// 功能不支持 Function not supported. 12779a452ceShoumkh ENOSYS = 38, 12879a452ceShoumkh /// 目录非空 Directory not empty. 12979a452ceShoumkh ENOTEMPTY = 39, 13079a452ceShoumkh /// 符号链接级别过多 Too many levels of symbolic links. 13179a452ceShoumkh ELOOP = 40, 13279a452ceShoumkh /// 没有期待类型的消息 No message of the desired type. 13379a452ceShoumkh ENOMSG = 41, 13479a452ceShoumkh /// 标志符被移除 Identifier removed. 13579a452ceShoumkh EIDRM = 42, 13679a452ceShoumkh /// 通道号超出范围 Channel number out of range 13779a452ceShoumkh ECHRNG = 43, 13879a452ceShoumkh /// 二级不同步 Level 2 not synchronized 13979a452ceShoumkh EL2NSYNC = 44, 14079a452ceShoumkh /// 三级暂停 Level 3 halted 14179a452ceShoumkh EL3HLT = 45, 14279a452ceShoumkh /// 三级重置 Level 3 reset 14379a452ceShoumkh EL3RST = 46, 14479a452ceShoumkh /// 链接号超出范围 Link number out of range 14579a452ceShoumkh ELNRNG = 47, 14679a452ceShoumkh /// 未连接协议驱动程序 Protocol driver not attached 14779a452ceShoumkh EUNATCH = 48, 14879a452ceShoumkh /// 没有可用的CSI结构 No CSI structure available 14979a452ceShoumkh ENOCSI = 49, 15079a452ceShoumkh /// 二级暂停 Level 2 halted 15179a452ceShoumkh EL2HLT = 50, 15279a452ceShoumkh /// 无效交换 Invalid exchange 15379a452ceShoumkh EBADE = 51, 15479a452ceShoumkh /// 无效的请求描述符 Invalid request descriptor 15579a452ceShoumkh EBADR = 52, 15679a452ceShoumkh /// 交换满 Exchange full 15779a452ceShoumkh EXFULL = 53, 15879a452ceShoumkh /// 无阳极 No anode 15979a452ceShoumkh ENOANO = 54, 16079a452ceShoumkh /// 请求码无效 Invalid request code 16179a452ceShoumkh EBADRQC = 55, 16279a452ceShoumkh /// 无效插槽 Invalid slot 16379a452ceShoumkh EBADSLT = 56, 16479a452ceShoumkh /// 资源死锁 Resource deadlock would occur 16579a452ceShoumkh EDEADLOCK = 57, 16679a452ceShoumkh /// 错误的字体文件格式 Bad font file format 16779a452ceShoumkh EBFONT = 58, 16879a452ceShoumkh /// 不是STREAM Not a STREAM 16979a452ceShoumkh ENOSTR = 59, 17079a452ceShoumkh /// 队列头没有可读取的消息 No message is available on the STREAM head read queue. 17179a452ceShoumkh ENODATA = 60, 17279a452ceShoumkh /// 流式ioctl()超时 Stream ioctl() timeout 17379a452ceShoumkh ETIME = 61, 17479a452ceShoumkh /// 没有STREAM资源 No STREAM resources. 17579a452ceShoumkh ENOSR = 62, 17679a452ceShoumkh /// 机器不在网络上 Machine is not on the network 17779a452ceShoumkh ENONET = 63, 17879a452ceShoumkh /// 未安装软件包 Package not installed 17979a452ceShoumkh ENOPKG = 64, 18079a452ceShoumkh /// 远程对象 Object is remote 18179a452ceShoumkh EREMOTE = 65, 18279a452ceShoumkh /// 保留 Reserved. 18379a452ceShoumkh ENOLINK = 66, 18479a452ceShoumkh /// 外设错误 Advertise error. 18579a452ceShoumkh EADV = 67, 18679a452ceShoumkh /// 安装错误 Srmount error 18779a452ceShoumkh ESRMNT = 68, 18879a452ceShoumkh /// 发送时发生通信错误 Communication error on send 18979a452ceShoumkh ECOMM = 69, 19079a452ceShoumkh /// 协议错误 Protocol error. 19179a452ceShoumkh EPROTO = 70, 19279a452ceShoumkh /// 保留使用 Reserved. 19379a452ceShoumkh EMULTIHOP = 71, 19479a452ceShoumkh /// RFS特定错误 RFS specific error 19579a452ceShoumkh EDOTDOT = 72, 19679a452ceShoumkh /// 错误的消息 Bad message. 19779a452ceShoumkh EBADMSG = 73, 19879a452ceShoumkh /// 数值过大,产生溢出 Value too large to be stored in data type. 19979a452ceShoumkh EOVERFLOW = 74, 20079a452ceShoumkh /// 名称在网络上不是唯一的 Name not unique on network 20179a452ceShoumkh ENOTUNIQ = 75, 20279a452ceShoumkh /// 处于不良状态的文件描述符 File descriptor in bad state 20379a452ceShoumkh EBADFD = 76, 20479a452ceShoumkh /// 远程地址已更改 Remote address changed 20579a452ceShoumkh EREMCHG = 77, 20679a452ceShoumkh /// 无法访问所需的共享库 Can not access a needed shared library 20779a452ceShoumkh ELIBACC = 78, 20879a452ceShoumkh /// 访问损坏的共享库 Accessing a corrupted shared library 20979a452ceShoumkh ELIBBAD = 79, 21079a452ceShoumkh /// a. out中的.lib部分已损坏 .lib section in a.out corrupted 21179a452ceShoumkh ELIBSCN = 80, 21279a452ceShoumkh /// 尝试链接太多共享库 Attempting to link in too many shared libraries 21379a452ceShoumkh ELIBMAX = 81, 21479a452ceShoumkh /// 无法直接执行共享库 Cannot exec a shared library directly 21579a452ceShoumkh ELIBEXEC = 82, 21679a452ceShoumkh /// 不合法的字符序列 Illegal byte sequence. 21779a452ceShoumkh EILSEQ = 83, 21879a452ceShoumkh /// 中断的系统调用应该重新启动 Interrupted system call should be restarted 21979a452ceShoumkh ERESTART = 84, 22079a452ceShoumkh /// 流管道错误 Streams pipe error 22179a452ceShoumkh ESTRPIPE = 85, 22279a452ceShoumkh /// 用户太多 Too many users 22379a452ceShoumkh EUSERS = 86, 22479a452ceShoumkh /// 不是一个套接字 Not a socket. 22579a452ceShoumkh ENOTSOCK = 87, 22679a452ceShoumkh /// 需要目标地址 Destination address required. 22779a452ceShoumkh EDESTADDRREQ = 88, 22879a452ceShoumkh /// 消息过大 Message too large. 22979a452ceShoumkh EMSGSIZE = 89, 23079a452ceShoumkh /// 对于套接字而言,错误的协议 Protocol wrong type for socket. 23179a452ceShoumkh EPROTOTYPE = 90, 23279a452ceShoumkh /// 协议不可用 Protocol not available. 23379a452ceShoumkh ENOPROTOOPT = 91, 23479a452ceShoumkh /// 协议不被支持 Protocol not supported. 23579a452ceShoumkh EPROTONOSUPPORT = 92, 23679a452ceShoumkh /// 不支持套接字类型 Socket type not supported 23779a452ceShoumkh ESOCKTNOSUPPORT = 93, 23879a452ceShoumkh /// 套接字不支持该操作 Operation not supported on socket (may be the same value as [ENOTSUP]). 23979a452ceShoumkh /// 24079a452ceShoumkh /// 不被支持 Not supported (may be the same value as [EOPNOTSUPP]). 24179a452ceShoumkh EOPNOTSUPP_OR_ENOTSUP = 94, 24279a452ceShoumkh /// 不支持协议系列 Protocol family not supported 24379a452ceShoumkh EPFNOSUPPORT = 95, 24479a452ceShoumkh /// 地址family不支持 Address family not supported. 24579a452ceShoumkh EAFNOSUPPORT = 96, 24679a452ceShoumkh /// 地址正在被使用 Address in use. 24779a452ceShoumkh EADDRINUSE = 97, 24879a452ceShoumkh /// 地址不可用 Address not available. 24979a452ceShoumkh EADDRNOTAVAIL = 98, 25079a452ceShoumkh /// 网络已关闭 Network is down. 25179a452ceShoumkh ENETDOWN = 99, 25279a452ceShoumkh /// 网络不可达 Network unreachable. 25379a452ceShoumkh ENETUNREACH = 100, 25479a452ceShoumkh /// 网络连接已断开 Connection aborted by network. 25579a452ceShoumkh ENETRESET = 101, 25679a452ceShoumkh /// 连接已断开 Connection aborted. 25779a452ceShoumkh ECONNABORTED = 102, 25879a452ceShoumkh /// 连接被重置 Connection reset. 25979a452ceShoumkh ECONNRESET = 103, 26079a452ceShoumkh /// 缓冲区空间不足 No buffer space available. 26179a452ceShoumkh ENOBUFS = 104, 26279a452ceShoumkh /// 套接字已连接 Socket is connected. 26379a452ceShoumkh EISCONN = 105, 26479a452ceShoumkh /// 套接字未连接 The socket is not connected. 26579a452ceShoumkh ENOTCONN = 106, 26679a452ceShoumkh /// 传输端点关闭后无法发送 Cannot send after transport endpoint shutdown 26779a452ceShoumkh ESHUTDOWN = 107, 26879a452ceShoumkh /// 引用太多:无法拼接 Too many references: cannot splice 26979a452ceShoumkh ETOOMANYREFS = 108, 27079a452ceShoumkh /// 连接超时 Connection timed out. 27179a452ceShoumkh ETIMEDOUT = 109, 27279a452ceShoumkh /// 连接被拒绝 Connection refused. 27379a452ceShoumkh ECONNREFUSED = 110, 27479a452ceShoumkh /// 主机已关闭 Host is down 27579a452ceShoumkh EHOSTDOWN = 111, 27679a452ceShoumkh /// 主机不可达 Host is unreachable. 27779a452ceShoumkh EHOSTUNREACH = 112, 27879a452ceShoumkh /// 连接已经在处理 Connection already in progress. 27979a452ceShoumkh EALREADY = 113, 28079a452ceShoumkh /// 操作正在处理 Operation in progress. 28179a452ceShoumkh EINPROGRESS = 114, 28279a452ceShoumkh /// 保留 Reserved. 28379a452ceShoumkh ESTALE = 115, 28479a452ceShoumkh /// 结构需要清理 Structure needs cleaning 28579a452ceShoumkh EUCLEAN = 116, 28679a452ceShoumkh /// 不是XENIX命名类型文件 Not a XENIX named type file 28779a452ceShoumkh ENOTNAM = 117, 28879a452ceShoumkh /// 没有可用的XENIX信号量 No XENIX semaphores available 28979a452ceShoumkh ENAVAIL = 118, 29079a452ceShoumkh /// 是命名类型文件 Is a named type file 29179a452ceShoumkh EISNAM = 119, 29279a452ceShoumkh /// 远程I/O错误 Remote I/O error 29379a452ceShoumkh EREMOTEIO = 120, 29479a452ceShoumkh /// 保留使用 Reserved 29579a452ceShoumkh EDQUOT = 121, 29679a452ceShoumkh /// 没有找到媒介 No medium found 29779a452ceShoumkh ENOMEDIUM = 122, 29879a452ceShoumkh /// 介质类型错误 Wrong medium type 29979a452ceShoumkh EMEDIUMTYPE = 123, 30079a452ceShoumkh /// 操作被取消 Operation canceled. 30179a452ceShoumkh ECANCELED = 124, 30279a452ceShoumkh /// 所需的密钥不可用 Required key not available 30379a452ceShoumkh ENOKEY = 125, 30479a452ceShoumkh /// 密钥已过期 Key has expired 30579a452ceShoumkh EKEYEXPIRED = 126, 30679a452ceShoumkh /// 密钥已被撤销 Key has been revoked 30779a452ceShoumkh EKEYREVOKED = 127, 30879a452ceShoumkh /// 密钥被服务拒绝 Key has been revoked 30979a452ceShoumkh EKEYREJECTED = 128, 31079a452ceShoumkh /// 之前的拥有者挂了 Previous owner died. 31179a452ceShoumkh EOWNERDEAD = 129, 31279a452ceShoumkh /// 状态不可恢复 State not recoverable. 31379a452ceShoumkh ENOTRECOVERABLE = 130, 31440314b30SXiaoye Zheng // VMX on 虚拟化开启指令出错 31540314b30SXiaoye Zheng EVMXONFailed = 131, 31640314b30SXiaoye Zheng // VMX off 虚拟化关闭指令出错 31740314b30SXiaoye Zheng EVMXOFFFailed = 132, 31840314b30SXiaoye Zheng // VMX VMWRITE 写入虚拟化VMCS内存出错 31940314b30SXiaoye Zheng EVMWRITEFailed = 133, 32040314b30SXiaoye Zheng EVMREADFailed = 134, 32140314b30SXiaoye Zheng EVMPRTLDFailed = 135, 32240314b30SXiaoye Zheng EVMLAUNCHFailed = 136, 32340314b30SXiaoye Zheng KVM_HVA_ERR_BAD = 137, 324bf4a4899SLoGin 325bf4a4899SLoGin // === 以下错误码不应该被用户态程序使用 === 326bf4a4899SLoGin ERESTARTSYS = 512, 3274454d1a2Slogin } 328676b8ef6SMork 329676b8ef6SMork impl SystemError { 330676b8ef6SMork /// @brief 把posix错误码转换为系统错误枚举类型。 331676b8ef6SMork pub fn from_posix_errno(errno: i32) -> Option<SystemError> { 332676b8ef6SMork // posix 错误码是小于0的 333676b8ef6SMork if errno >= 0 { 334676b8ef6SMork return None; 335676b8ef6SMork } 336676b8ef6SMork return <Self as FromPrimitive>::from_i32(-errno); 337676b8ef6SMork } 338676b8ef6SMork 339676b8ef6SMork /// @brief 把系统错误枚举类型转换为负数posix错误码。 340676b8ef6SMork pub fn to_posix_errno(&self) -> i32 { 341676b8ef6SMork return -<Self as ToPrimitive>::to_i32(self).unwrap(); 342676b8ef6SMork } 343676b8ef6SMork } 344ab5c8ca4Slogin 345ad1d649eSGnoCiYeH // 与linux不一致的调用,在linux基础上累加 346ad1d649eSGnoCiYeH pub const SYS_PUT_STRING: usize = 100000; 347ad1d649eSGnoCiYeH pub const SYS_SBRK: usize = 100001; 348ab5c8ca4Slogin /// 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 349ad1d649eSGnoCiYeH pub const SYS_CLOCK: usize = 100002; 350ad1d649eSGnoCiYeH pub const SYS_SCHED: usize = 100003; 35140314b30SXiaoye Zheng 352ab5c8ca4Slogin #[derive(Debug)] 353ab5c8ca4Slogin pub struct Syscall; 354ab5c8ca4Slogin 355ab5c8ca4Slogin extern "C" { 356ab5c8ca4Slogin fn do_put_string(s: *const u8, front_color: u32, back_color: u32) -> usize; 357ab5c8ca4Slogin } 358ab5c8ca4Slogin 359ab5c8ca4Slogin #[no_mangle] 360ab5c8ca4Slogin pub extern "C" fn syscall_init() -> i32 { 361ab5c8ca4Slogin kinfo!("Initializing syscall..."); 362ab5c8ca4Slogin Syscall::init().expect("syscall init failed"); 363ab5c8ca4Slogin kinfo!("Syscall init successfully!"); 364ab5c8ca4Slogin return 0; 365ab5c8ca4Slogin } 366ab5c8ca4Slogin 367ab5c8ca4Slogin impl Syscall { 368ab5c8ca4Slogin /// 初始化系统调用 369ab5c8ca4Slogin pub fn init() -> Result<(), SystemError> { 370ab5c8ca4Slogin static INIT_FLAG: AtomicBool = AtomicBool::new(false); 371ab5c8ca4Slogin let prev = INIT_FLAG.swap(true, Ordering::SeqCst); 372ab5c8ca4Slogin if prev { 373ab5c8ca4Slogin panic!("Cannot initialize syscall more than once!"); 374ab5c8ca4Slogin } 375ab5c8ca4Slogin return crate::arch::syscall::arch_syscall_init(); 376ab5c8ca4Slogin } 377ab5c8ca4Slogin /// @brief 系统调用分发器,用于分发系统调用。 378ab5c8ca4Slogin /// 379ab5c8ca4Slogin /// 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。 380ab5c8ca4Slogin /// 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。 381*4fda81ceSLoGin #[inline(never)] 3829e9ffedfSPlucky923 pub fn handle( 3839e9ffedfSPlucky923 syscall_num: usize, 3849e9ffedfSPlucky923 args: &[usize], 3859e9ffedfSPlucky923 frame: &mut TrapFrame, 3869e9ffedfSPlucky923 ) -> Result<usize, SystemError> { 387ab5c8ca4Slogin let r = match syscall_num { 388ab5c8ca4Slogin SYS_PUT_STRING => { 389ab5c8ca4Slogin Self::put_string(args[0] as *const u8, args[1] as u32, args[2] as u32) 390ab5c8ca4Slogin } 391*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 392ab5c8ca4Slogin SYS_OPEN => { 393ab5c8ca4Slogin let path: &CStr = unsafe { CStr::from_ptr(args[0] as *const c_char) }; 394ab5c8ca4Slogin let path: Result<&str, core::str::Utf8Error> = path.to_str(); 395ab5c8ca4Slogin let res = if path.is_err() { 396ab5c8ca4Slogin Err(SystemError::EINVAL) 397ab5c8ca4Slogin } else { 398ab5c8ca4Slogin let path: &str = path.unwrap(); 39934e6d6c8Syuyi2439 400ab5c8ca4Slogin let flags = args[1]; 4010fb515b0SLoGin let mode = args[2]; 4020fb515b0SLoGin 403ab5c8ca4Slogin let open_flags: FileMode = FileMode::from_bits_truncate(flags as u32); 4040fb515b0SLoGin let mode = ModeType::from_bits(mode as u32).ok_or(SystemError::EINVAL)?; 4050fb515b0SLoGin Self::open(path, open_flags, mode, true) 4060fb515b0SLoGin }; 4070fb515b0SLoGin res 4080fb515b0SLoGin } 4090fb515b0SLoGin 4100fb515b0SLoGin SYS_OPENAT => { 4110fb515b0SLoGin let dirfd = args[0] as i32; 4120fb515b0SLoGin let path: &CStr = unsafe { CStr::from_ptr(args[1] as *const c_char) }; 4130fb515b0SLoGin let flags = args[2]; 4140fb515b0SLoGin let mode = args[3]; 4150fb515b0SLoGin 4160fb515b0SLoGin let path: Result<&str, core::str::Utf8Error> = path.to_str(); 4170fb515b0SLoGin let res = if path.is_err() { 4180fb515b0SLoGin Err(SystemError::EINVAL) 4190fb515b0SLoGin } else { 4200fb515b0SLoGin let path: &str = path.unwrap(); 4210fb515b0SLoGin 4220fb515b0SLoGin let open_flags: FileMode = 4230fb515b0SLoGin FileMode::from_bits(flags as u32).ok_or(SystemError::EINVAL)?; 4240fb515b0SLoGin let mode = ModeType::from_bits(mode as u32).ok_or(SystemError::EINVAL)?; 4250fb515b0SLoGin Self::openat(dirfd, path, open_flags, mode, true) 426ab5c8ca4Slogin }; 427ab5c8ca4Slogin res 428ab5c8ca4Slogin } 429ab5c8ca4Slogin SYS_CLOSE => { 430ab5c8ca4Slogin let fd = args[0]; 43134e6d6c8Syuyi2439 43234e6d6c8Syuyi2439 let res = Self::close(fd); 43334e6d6c8Syuyi2439 43434e6d6c8Syuyi2439 res 435ab5c8ca4Slogin } 436ab5c8ca4Slogin SYS_READ => { 437ab5c8ca4Slogin let fd = args[0] as i32; 438ab5c8ca4Slogin let buf_vaddr = args[1]; 439ab5c8ca4Slogin let len = args[2]; 4409e9ffedfSPlucky923 let from_user = frame.from_user(); 4419e9ffedfSPlucky923 let mut user_buffer_writer = 4429e9ffedfSPlucky923 UserBufferWriter::new(buf_vaddr as *mut u8, len, from_user)?; 4436d81180bSLoGin 4449e9ffedfSPlucky923 let user_buf = user_buffer_writer.buffer(0)?; 4459e9ffedfSPlucky923 let res = Self::read(fd, user_buf); 446ab5c8ca4Slogin res 447ab5c8ca4Slogin } 448ab5c8ca4Slogin SYS_WRITE => { 449ab5c8ca4Slogin let fd = args[0] as i32; 450ab5c8ca4Slogin let buf_vaddr = args[1]; 451ab5c8ca4Slogin let len = args[2]; 4529e9ffedfSPlucky923 let from_user = frame.from_user(); 4539e9ffedfSPlucky923 let user_buffer_reader = 4549e9ffedfSPlucky923 UserBufferReader::new(buf_vaddr as *const u8, len, from_user)?; 4556d81180bSLoGin 4569e9ffedfSPlucky923 let user_buf = user_buffer_reader.read_from_user(0)?; 4579e9ffedfSPlucky923 let res = Self::write(fd, user_buf); 458ab5c8ca4Slogin res 459ab5c8ca4Slogin } 460ab5c8ca4Slogin 461ab5c8ca4Slogin SYS_LSEEK => { 462ab5c8ca4Slogin let fd = args[0] as i32; 463ab5c8ca4Slogin let offset = args[1] as i64; 464ab5c8ca4Slogin let whence = args[2] as u32; 465ab5c8ca4Slogin 466ab5c8ca4Slogin let w = match whence { 467ab5c8ca4Slogin SEEK_SET => Ok(SeekFrom::SeekSet(offset)), 468ab5c8ca4Slogin SEEK_CUR => Ok(SeekFrom::SeekCurrent(offset)), 469ab5c8ca4Slogin SEEK_END => Ok(SeekFrom::SeekEnd(offset)), 470ab5c8ca4Slogin SEEK_MAX => Ok(SeekFrom::SeekEnd(0)), 471ab5c8ca4Slogin _ => Err(SystemError::EINVAL), 4729e9ffedfSPlucky923 }?; 473ab5c8ca4Slogin 474ab5c8ca4Slogin Self::lseek(fd, w) 475ab5c8ca4Slogin } 47640314b30SXiaoye Zheng SYS_IOCTL => { 47740314b30SXiaoye Zheng let fd = args[0]; 47840314b30SXiaoye Zheng let cmd = args[1]; 47940314b30SXiaoye Zheng let data = args[2]; 48040314b30SXiaoye Zheng Self::ioctl(fd, cmd as u32, data) 48140314b30SXiaoye Zheng } 482ab5c8ca4Slogin 483*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 4841496ba7bSLoGin SYS_FORK => Self::fork(frame), 485*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 4861496ba7bSLoGin SYS_VFORK => Self::vfork(frame), 4871496ba7bSLoGin 488ab5c8ca4Slogin SYS_BRK => { 48940fe15e0SLoGin let new_brk = VirtAddr::new(args[0]); 49040fe15e0SLoGin Self::brk(new_brk).map(|vaddr| vaddr.data()) 491ab5c8ca4Slogin } 492ab5c8ca4Slogin 493ab5c8ca4Slogin SYS_SBRK => { 494ab5c8ca4Slogin let increment = args[0] as isize; 4951496ba7bSLoGin Self::sbrk(increment).map(|vaddr: VirtAddr| vaddr.data()) 496ab5c8ca4Slogin } 497ab5c8ca4Slogin 498ab5c8ca4Slogin SYS_REBOOT => Self::reboot(), 499ab5c8ca4Slogin 500ab5c8ca4Slogin SYS_CHDIR => { 501ab5c8ca4Slogin // Closure for checking arguments 502ab5c8ca4Slogin let chdir_check = |arg0: usize| { 503ab5c8ca4Slogin if arg0 == 0 { 504ab5c8ca4Slogin return Err(SystemError::EFAULT); 505ab5c8ca4Slogin } 506ab5c8ca4Slogin let path_ptr = arg0 as *const c_char; 507be63f3b2Shoumkh let virt_addr = VirtAddr::new(path_ptr as usize); 508ab5c8ca4Slogin // 权限校验 509ab5c8ca4Slogin if path_ptr.is_null() 5101496ba7bSLoGin || (frame.from_user() 5111496ba7bSLoGin && verify_area(virt_addr, PAGE_2M_SIZE as usize).is_err()) 512ab5c8ca4Slogin { 513ab5c8ca4Slogin return Err(SystemError::EINVAL); 514ab5c8ca4Slogin } 515ab5c8ca4Slogin let dest_path: &CStr = unsafe { CStr::from_ptr(path_ptr) }; 516ab5c8ca4Slogin let dest_path: &str = dest_path.to_str().map_err(|_| SystemError::EINVAL)?; 517ab5c8ca4Slogin if dest_path.len() == 0 { 518ab5c8ca4Slogin return Err(SystemError::EINVAL); 5191496ba7bSLoGin } else if dest_path.len() > MAX_PATHLEN as usize { 520ab5c8ca4Slogin return Err(SystemError::ENAMETOOLONG); 521ab5c8ca4Slogin } 522ab5c8ca4Slogin 523ab5c8ca4Slogin return Ok(dest_path); 524ab5c8ca4Slogin }; 525ab5c8ca4Slogin 5269e9ffedfSPlucky923 let r = chdir_check(args[0])?; 5279e9ffedfSPlucky923 Self::chdir(r) 528ab5c8ca4Slogin } 529ab5c8ca4Slogin 530*4fda81ceSLoGin #[allow(unreachable_patterns)] 531*4fda81ceSLoGin SYS_GETDENTS64 | SYS_GETDENTS => { 532ab5c8ca4Slogin let fd = args[0] as i32; 53334e6d6c8Syuyi2439 534ab5c8ca4Slogin let buf_vaddr = args[1]; 535ab5c8ca4Slogin let len = args[2]; 536f5df0e79SLoGin let virt_addr: VirtAddr = VirtAddr::new(buf_vaddr); 537ab5c8ca4Slogin // 判断缓冲区是否来自用户态,进行权限校验 5381496ba7bSLoGin let res = if frame.from_user() && verify_area(virt_addr, len as usize).is_err() { 539ab5c8ca4Slogin // 来自用户态,而buffer在内核态,这样的操作不被允许 540ab5c8ca4Slogin Err(SystemError::EPERM) 541ab5c8ca4Slogin } else if buf_vaddr == 0 { 542ab5c8ca4Slogin Err(SystemError::EFAULT) 543ab5c8ca4Slogin } else { 544ab5c8ca4Slogin let buf: &mut [u8] = unsafe { 545ab5c8ca4Slogin core::slice::from_raw_parts_mut::<'static, u8>(buf_vaddr as *mut u8, len) 546ab5c8ca4Slogin }; 547ab5c8ca4Slogin Self::getdents(fd, buf) 548ab5c8ca4Slogin }; 549ab5c8ca4Slogin 550ab5c8ca4Slogin res 551ab5c8ca4Slogin } 552ab5c8ca4Slogin 553ab5c8ca4Slogin SYS_EXECVE => { 554ab5c8ca4Slogin let path_ptr = args[0]; 555ab5c8ca4Slogin let argv_ptr = args[1]; 556ab5c8ca4Slogin let env_ptr = args[2]; 557be63f3b2Shoumkh let virt_path_ptr = VirtAddr::new(path_ptr); 558be63f3b2Shoumkh let virt_argv_ptr = VirtAddr::new(argv_ptr); 559be63f3b2Shoumkh let virt_env_ptr = VirtAddr::new(env_ptr); 560ab5c8ca4Slogin // 权限校验 5611496ba7bSLoGin if frame.from_user() 5621496ba7bSLoGin && (verify_area(virt_path_ptr, MAX_PATHLEN as usize).is_err() 563be63f3b2Shoumkh || verify_area(virt_argv_ptr, PAGE_4K_SIZE as usize).is_err()) 564be63f3b2Shoumkh || verify_area(virt_env_ptr, PAGE_4K_SIZE as usize).is_err() 565ab5c8ca4Slogin { 566ab5c8ca4Slogin Err(SystemError::EFAULT) 567ab5c8ca4Slogin } else { 568ab5c8ca4Slogin Self::execve( 5691496ba7bSLoGin path_ptr as *const u8, 5701496ba7bSLoGin argv_ptr as *const *const u8, 5711496ba7bSLoGin env_ptr as *const *const u8, 5721496ba7bSLoGin frame, 573ab5c8ca4Slogin ) 5741496ba7bSLoGin .map(|_| 0) 575ab5c8ca4Slogin } 576ab5c8ca4Slogin } 577ab5c8ca4Slogin SYS_WAIT4 => { 578bf4a4899SLoGin let pid = args[0] as i32; 5791496ba7bSLoGin let wstatus = args[1] as *mut i32; 580ab5c8ca4Slogin let options = args[2] as c_int; 581ab5c8ca4Slogin let rusage = args[3] as *mut c_void; 582ab5c8ca4Slogin // 权限校验 583ab5c8ca4Slogin // todo: 引入rusage之后,更正以下权限校验代码中,rusage的大小 584bf4a4899SLoGin Self::wait4(pid.into(), wstatus, options, rusage) 585ab5c8ca4Slogin } 586ab5c8ca4Slogin 587ab5c8ca4Slogin SYS_EXIT => { 588ab5c8ca4Slogin let exit_code = args[0]; 589ab5c8ca4Slogin Self::exit(exit_code) 590ab5c8ca4Slogin } 591*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 592ab5c8ca4Slogin SYS_MKDIR => { 593ab5c8ca4Slogin let path_ptr = args[0] as *const c_char; 594ab5c8ca4Slogin let mode = args[1]; 595be63f3b2Shoumkh let virt_path_ptr = VirtAddr::new(path_ptr as usize); 596ab5c8ca4Slogin let security_check = || { 597ab5c8ca4Slogin if path_ptr.is_null() 5981496ba7bSLoGin || (frame.from_user() 5991496ba7bSLoGin && verify_area(virt_path_ptr, PAGE_2M_SIZE as usize).is_err()) 600ab5c8ca4Slogin { 601ab5c8ca4Slogin return Err(SystemError::EINVAL); 602ab5c8ca4Slogin } 603ab5c8ca4Slogin let path: &CStr = unsafe { CStr::from_ptr(path_ptr) }; 604ab5c8ca4Slogin let path: &str = path.to_str().map_err(|_| SystemError::EINVAL)?.trim(); 605ab5c8ca4Slogin 606ab5c8ca4Slogin if path == "" { 607ab5c8ca4Slogin return Err(SystemError::EINVAL); 608ab5c8ca4Slogin } 609ab5c8ca4Slogin return Ok(path); 610ab5c8ca4Slogin }; 611ab5c8ca4Slogin 612ab5c8ca4Slogin let path = security_check(); 613ab5c8ca4Slogin if path.is_err() { 614ab5c8ca4Slogin Err(path.unwrap_err()) 615ab5c8ca4Slogin } else { 616ab5c8ca4Slogin Self::mkdir(path.unwrap(), mode) 617ab5c8ca4Slogin } 618ab5c8ca4Slogin } 619ab5c8ca4Slogin 620ab5c8ca4Slogin SYS_NANOSLEEP => { 621ab5c8ca4Slogin let req = args[0] as *const TimeSpec; 622ab5c8ca4Slogin let rem = args[1] as *mut TimeSpec; 623be63f3b2Shoumkh let virt_req = VirtAddr::new(req as usize); 624be63f3b2Shoumkh let virt_rem = VirtAddr::new(rem as usize); 6251496ba7bSLoGin if frame.from_user() 626be63f3b2Shoumkh && (verify_area(virt_req, core::mem::size_of::<TimeSpec>() as usize).is_err() 627be63f3b2Shoumkh || verify_area(virt_rem, core::mem::size_of::<TimeSpec>() as usize) 628be63f3b2Shoumkh .is_err()) 629ab5c8ca4Slogin { 630ab5c8ca4Slogin Err(SystemError::EFAULT) 631ab5c8ca4Slogin } else { 632ab5c8ca4Slogin Self::nanosleep(req, rem) 633ab5c8ca4Slogin } 634ab5c8ca4Slogin } 635ab5c8ca4Slogin 636ab5c8ca4Slogin SYS_CLOCK => Self::clock(), 637*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 638ab5c8ca4Slogin SYS_PIPE => { 63922c9db31Shanjiezhou let pipefd: *mut i32 = args[0] as *mut c_int; 6400fb515b0SLoGin if pipefd.is_null() { 6410fb515b0SLoGin Err(SystemError::EFAULT) 6420fb515b0SLoGin } else { 6430fb515b0SLoGin Self::pipe2(pipefd, FileMode::empty()) 6440fb515b0SLoGin } 6450fb515b0SLoGin } 6460fb515b0SLoGin SYS_PIPE2 => { 6470fb515b0SLoGin let pipefd: *mut i32 = args[0] as *mut c_int; 64822c9db31Shanjiezhou let arg1 = args[1]; 64922c9db31Shanjiezhou if pipefd.is_null() { 65022c9db31Shanjiezhou Err(SystemError::EFAULT) 65122c9db31Shanjiezhou } else { 65222c9db31Shanjiezhou let flags = FileMode::from_bits_truncate(arg1 as u32); 65322c9db31Shanjiezhou Self::pipe2(pipefd, flags) 654ab5c8ca4Slogin } 655ab5c8ca4Slogin } 656ab5c8ca4Slogin 657*4fda81ceSLoGin SYS_UNLINKAT => { 658ab5c8ca4Slogin let dirfd = args[0] as i32; 659ab5c8ca4Slogin let pathname = args[1] as *const c_char; 660ab5c8ca4Slogin let flags = args[2] as u32; 661be63f3b2Shoumkh let virt_pathname = VirtAddr::new(pathname as usize); 6621496ba7bSLoGin if frame.from_user() && verify_area(virt_pathname, PAGE_4K_SIZE as usize).is_err() { 663ab5c8ca4Slogin Err(SystemError::EFAULT) 664ab5c8ca4Slogin } else if pathname.is_null() { 665ab5c8ca4Slogin Err(SystemError::EFAULT) 666ab5c8ca4Slogin } else { 667ab5c8ca4Slogin let get_path = || { 668ab5c8ca4Slogin let pathname: &CStr = unsafe { CStr::from_ptr(pathname) }; 669ab5c8ca4Slogin 670ab5c8ca4Slogin let pathname: &str = pathname.to_str().map_err(|_| SystemError::EINVAL)?; 671ab5c8ca4Slogin if pathname.len() >= MAX_PATHLEN { 672ab5c8ca4Slogin return Err(SystemError::ENAMETOOLONG); 673ab5c8ca4Slogin } 674ab5c8ca4Slogin return Ok(pathname.trim()); 675ab5c8ca4Slogin }; 676ab5c8ca4Slogin let pathname = get_path(); 677ab5c8ca4Slogin if pathname.is_err() { 678ab5c8ca4Slogin Err(pathname.unwrap_err()) 679ab5c8ca4Slogin } else { 6806d81180bSLoGin // kdebug!("sys unlinkat: dirfd: {}, pathname: {}", dirfd, pathname.as_ref().unwrap()); 681ab5c8ca4Slogin Self::unlinkat(dirfd, pathname.unwrap(), flags) 682ab5c8ca4Slogin } 683ab5c8ca4Slogin } 684ab5c8ca4Slogin } 685bf4a4899SLoGin 686*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 687bf4a4899SLoGin SYS_UNLINK => { 688bf4a4899SLoGin let pathname = args[0] as *const u8; 689bf4a4899SLoGin Self::unlink(pathname) 690bf4a4899SLoGin } 691ab5c8ca4Slogin SYS_KILL => { 6921496ba7bSLoGin let pid = Pid::new(args[0]); 693ab5c8ca4Slogin let sig = args[1] as c_int; 6943c82aa56SChiichen // kdebug!("KILL SYSCALL RECEIVED"); 695ab5c8ca4Slogin Self::kill(pid, sig) 696ab5c8ca4Slogin } 697ab5c8ca4Slogin 698*4fda81ceSLoGin SYS_RT_SIGACTION => { 699ab5c8ca4Slogin let sig = args[0] as c_int; 700ab5c8ca4Slogin let act = args[1]; 701ab5c8ca4Slogin let old_act = args[2]; 7021496ba7bSLoGin Self::sigaction(sig, act, old_act, frame.from_user()) 703ab5c8ca4Slogin } 704ab5c8ca4Slogin 705ab5c8ca4Slogin SYS_RT_SIGRETURN => { 706ab5c8ca4Slogin // 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 707ab5c8ca4Slogin // todo: 未来需要将signal机制与平台解耦 708ab5c8ca4Slogin todo!() 709ab5c8ca4Slogin } 710ab5c8ca4Slogin 7111496ba7bSLoGin SYS_GETPID => Self::getpid().map(|pid| pid.into()), 712ab5c8ca4Slogin 7131496ba7bSLoGin SYS_SCHED => Self::sched(frame.from_user()), 714ab5c8ca4Slogin SYS_DUP => { 715ab5c8ca4Slogin let oldfd: i32 = args[0] as c_int; 716ab5c8ca4Slogin Self::dup(oldfd) 717ab5c8ca4Slogin } 718*4fda81ceSLoGin 719*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 720ab5c8ca4Slogin SYS_DUP2 => { 721ab5c8ca4Slogin let oldfd: i32 = args[0] as c_int; 722ab5c8ca4Slogin let newfd: i32 = args[1] as c_int; 723ab5c8ca4Slogin Self::dup2(oldfd, newfd) 724ab5c8ca4Slogin } 725ab5c8ca4Slogin 726ab5c8ca4Slogin SYS_SOCKET => Self::socket(args[0], args[1], args[2]), 727ab5c8ca4Slogin SYS_SETSOCKOPT => { 728ab5c8ca4Slogin let optval = args[3] as *const u8; 729ab5c8ca4Slogin let optlen = args[4] as usize; 730be63f3b2Shoumkh let virt_optval = VirtAddr::new(optval as usize); 731ab5c8ca4Slogin // 验证optval的地址是否合法 732be63f3b2Shoumkh if verify_area(virt_optval, optlen as usize).is_err() { 733ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 734ab5c8ca4Slogin Err(SystemError::EFAULT) 735ab5c8ca4Slogin } else { 736ab5c8ca4Slogin let data: &[u8] = unsafe { core::slice::from_raw_parts(optval, optlen) }; 737ab5c8ca4Slogin Self::setsockopt(args[0], args[1], args[2], data) 738ab5c8ca4Slogin } 739ab5c8ca4Slogin } 740ab5c8ca4Slogin SYS_GETSOCKOPT => { 741ab5c8ca4Slogin let optval = args[3] as *mut u8; 742ab5c8ca4Slogin let optlen = args[4] as *mut usize; 743be63f3b2Shoumkh let virt_optval = VirtAddr::new(optval as usize); 744be63f3b2Shoumkh let virt_optlen = VirtAddr::new(optlen as usize); 745ab5c8ca4Slogin let security_check = || { 746ab5c8ca4Slogin // 验证optval的地址是否合法 747be63f3b2Shoumkh if verify_area(virt_optval, PAGE_4K_SIZE as usize).is_err() { 748ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 749ab5c8ca4Slogin return Err(SystemError::EFAULT); 750ab5c8ca4Slogin } 751ab5c8ca4Slogin 752ab5c8ca4Slogin // 验证optlen的地址是否合法 753be63f3b2Shoumkh if verify_area(virt_optlen, core::mem::size_of::<u32>() as usize).is_err() { 754ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 755ab5c8ca4Slogin return Err(SystemError::EFAULT); 756ab5c8ca4Slogin } 757ab5c8ca4Slogin return Ok(()); 758ab5c8ca4Slogin }; 759ab5c8ca4Slogin let r = security_check(); 760ab5c8ca4Slogin if r.is_err() { 761ab5c8ca4Slogin Err(r.unwrap_err()) 762ab5c8ca4Slogin } else { 763ab5c8ca4Slogin Self::getsockopt(args[0], args[1], args[2], optval, optlen as *mut u32) 764ab5c8ca4Slogin } 765ab5c8ca4Slogin } 766ab5c8ca4Slogin 767ab5c8ca4Slogin SYS_CONNECT => { 768ab5c8ca4Slogin let addr = args[1] as *const SockAddr; 769ab5c8ca4Slogin let addrlen = args[2] as usize; 770be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 771ab5c8ca4Slogin // 验证addr的地址是否合法 772be63f3b2Shoumkh if verify_area(virt_addr, addrlen as usize).is_err() { 773ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 774ab5c8ca4Slogin Err(SystemError::EFAULT) 775ab5c8ca4Slogin } else { 776ab5c8ca4Slogin Self::connect(args[0], addr, addrlen) 777ab5c8ca4Slogin } 778ab5c8ca4Slogin } 779ab5c8ca4Slogin SYS_BIND => { 780ab5c8ca4Slogin let addr = args[1] as *const SockAddr; 781ab5c8ca4Slogin let addrlen = args[2] as usize; 782be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 783ab5c8ca4Slogin // 验证addr的地址是否合法 784be63f3b2Shoumkh if verify_area(virt_addr, addrlen as usize).is_err() { 785ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 786ab5c8ca4Slogin Err(SystemError::EFAULT) 787ab5c8ca4Slogin } else { 788ab5c8ca4Slogin Self::bind(args[0], addr, addrlen) 789ab5c8ca4Slogin } 790ab5c8ca4Slogin } 791ab5c8ca4Slogin 792ab5c8ca4Slogin SYS_SENDTO => { 793ab5c8ca4Slogin let buf = args[1] as *const u8; 794ab5c8ca4Slogin let len = args[2] as usize; 795ab5c8ca4Slogin let flags = args[3] as u32; 796ab5c8ca4Slogin let addr = args[4] as *const SockAddr; 797ab5c8ca4Slogin let addrlen = args[5] as usize; 798be63f3b2Shoumkh let virt_buf = VirtAddr::new(buf as usize); 799be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 800ab5c8ca4Slogin // 验证buf的地址是否合法 801be63f3b2Shoumkh if verify_area(virt_buf, len as usize).is_err() { 802ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 803ab5c8ca4Slogin Err(SystemError::EFAULT) 804be63f3b2Shoumkh } else if verify_area(virt_addr, addrlen as usize).is_err() { 805ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 806ab5c8ca4Slogin Err(SystemError::EFAULT) 807ab5c8ca4Slogin } else { 808ab5c8ca4Slogin let data: &[u8] = unsafe { core::slice::from_raw_parts(buf, len) }; 809ab5c8ca4Slogin Self::sendto(args[0], data, flags, addr, addrlen) 810ab5c8ca4Slogin } 811ab5c8ca4Slogin } 812ab5c8ca4Slogin 813ab5c8ca4Slogin SYS_RECVFROM => { 814ab5c8ca4Slogin let buf = args[1] as *mut u8; 815ab5c8ca4Slogin let len = args[2] as usize; 816ab5c8ca4Slogin let flags = args[3] as u32; 817ab5c8ca4Slogin let addr = args[4] as *mut SockAddr; 818ab5c8ca4Slogin let addrlen = args[5] as *mut usize; 819be63f3b2Shoumkh let virt_buf = VirtAddr::new(buf as usize); 820be63f3b2Shoumkh let virt_addrlen = VirtAddr::new(addrlen as usize); 821be63f3b2Shoumkh let virt_addr = VirtAddr::new(addr as usize); 822ab5c8ca4Slogin let security_check = || { 823ab5c8ca4Slogin // 验证buf的地址是否合法 824be63f3b2Shoumkh if verify_area(virt_buf, len as usize).is_err() { 825ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 826ab5c8ca4Slogin return Err(SystemError::EFAULT); 827ab5c8ca4Slogin } 828ab5c8ca4Slogin 829ab5c8ca4Slogin // 验证addrlen的地址是否合法 830be63f3b2Shoumkh if verify_area(virt_addrlen, core::mem::size_of::<u32>() as usize).is_err() { 831ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 832ab5c8ca4Slogin return Err(SystemError::EFAULT); 833ab5c8ca4Slogin } 834ab5c8ca4Slogin 835be63f3b2Shoumkh if verify_area(virt_addr, core::mem::size_of::<SockAddr>() as usize).is_err() { 836ab5c8ca4Slogin // 地址空间超出了用户空间的范围,不合法 837ab5c8ca4Slogin return Err(SystemError::EFAULT); 838ab5c8ca4Slogin } 839ab5c8ca4Slogin return Ok(()); 840ab5c8ca4Slogin }; 841ab5c8ca4Slogin let r = security_check(); 842ab5c8ca4Slogin if r.is_err() { 843ab5c8ca4Slogin Err(r.unwrap_err()) 844ab5c8ca4Slogin } else { 845ab5c8ca4Slogin let buf = unsafe { core::slice::from_raw_parts_mut(buf, len) }; 846ab5c8ca4Slogin Self::recvfrom(args[0], buf, flags, addr, addrlen as *mut u32) 847ab5c8ca4Slogin } 848ab5c8ca4Slogin } 849ab5c8ca4Slogin 850ab5c8ca4Slogin SYS_RECVMSG => { 851ab5c8ca4Slogin let msg = args[1] as *mut crate::net::syscall::MsgHdr; 852ab5c8ca4Slogin let flags = args[2] as u32; 8534537ffb7SChiichen match UserBufferWriter::new( 8544537ffb7SChiichen msg, 8554537ffb7SChiichen core::mem::size_of::<crate::net::syscall::MsgHdr>(), 8564537ffb7SChiichen true, 8574537ffb7SChiichen ) { 8584537ffb7SChiichen Err(e) => Err(e), 8594537ffb7SChiichen Ok(mut user_buffer_writer) => { 8604537ffb7SChiichen match user_buffer_writer.buffer::<crate::net::syscall::MsgHdr>(0) { 8614537ffb7SChiichen Err(e) => Err(e), 8624537ffb7SChiichen Ok(buffer) => { 8634537ffb7SChiichen let msg = &mut buffer[0]; 864ab5c8ca4Slogin Self::recvmsg(args[0], msg, flags) 865ab5c8ca4Slogin } 866ab5c8ca4Slogin } 8674537ffb7SChiichen } 8684537ffb7SChiichen } 8694537ffb7SChiichen } 870ab5c8ca4Slogin 871ab5c8ca4Slogin SYS_LISTEN => Self::listen(args[0], args[1]), 872ab5c8ca4Slogin SYS_SHUTDOWN => Self::shutdown(args[0], args[1]), 873ab5c8ca4Slogin SYS_ACCEPT => Self::accept(args[0], args[1] as *mut SockAddr, args[2] as *mut u32), 874c47fe904SLoGin SYS_ACCEPT4 => Self::accept4( 875c47fe904SLoGin args[0], 876c47fe904SLoGin args[1] as *mut SockAddr, 877c47fe904SLoGin args[2] as *mut u32, 878c47fe904SLoGin args[3] as u32, 879c47fe904SLoGin ), 880ab5c8ca4Slogin SYS_GETSOCKNAME => { 881ab5c8ca4Slogin Self::getsockname(args[0], args[1] as *mut SockAddr, args[2] as *mut u32) 882ab5c8ca4Slogin } 883ab5c8ca4Slogin SYS_GETPEERNAME => { 884ab5c8ca4Slogin Self::getpeername(args[0], args[1] as *mut SockAddr, args[2] as *mut u32) 885ab5c8ca4Slogin } 88636fd0130Shoumkh SYS_GETTIMEOFDAY => { 88736fd0130Shoumkh let timeval = args[0] as *mut PosixTimeval; 88840fe15e0SLoGin let timezone_ptr = args[1] as *mut PosixTimeZone; 88940fe15e0SLoGin Self::gettimeofday(timeval, timezone_ptr) 8904537ffb7SChiichen } 89140fe15e0SLoGin SYS_MMAP => { 89240fe15e0SLoGin let len = page_align_up(args[1]); 893be63f3b2Shoumkh let virt_addr = VirtAddr::new(args[0] as usize); 894be63f3b2Shoumkh if verify_area(virt_addr, len as usize).is_err() { 89540fe15e0SLoGin Err(SystemError::EFAULT) 89640fe15e0SLoGin } else { 89740fe15e0SLoGin Self::mmap( 89840fe15e0SLoGin VirtAddr::new(args[0]), 89940fe15e0SLoGin len, 90040fe15e0SLoGin args[2], 90140fe15e0SLoGin args[3], 90240fe15e0SLoGin args[4] as i32, 90340fe15e0SLoGin args[5], 90440fe15e0SLoGin ) 90540fe15e0SLoGin } 90640fe15e0SLoGin } 90740fe15e0SLoGin SYS_MUNMAP => { 90840fe15e0SLoGin let addr = args[0]; 90940fe15e0SLoGin let len = page_align_up(args[1]); 910971462beSGnoCiYeH if addr & (MMArch::PAGE_SIZE - 1) != 0 { 91140fe15e0SLoGin // The addr argument is not a multiple of the page size 91240fe15e0SLoGin Err(SystemError::EINVAL) 91340fe15e0SLoGin } else { 91440fe15e0SLoGin Self::munmap(VirtAddr::new(addr), len) 91540fe15e0SLoGin } 91640fe15e0SLoGin } 91740fe15e0SLoGin SYS_MPROTECT => { 91840fe15e0SLoGin let addr = args[0]; 91940fe15e0SLoGin let len = page_align_up(args[1]); 920971462beSGnoCiYeH if addr & (MMArch::PAGE_SIZE - 1) != 0 { 92140fe15e0SLoGin // The addr argument is not a multiple of the page size 92240fe15e0SLoGin Err(SystemError::EINVAL) 92340fe15e0SLoGin } else { 92440fe15e0SLoGin Self::mprotect(VirtAddr::new(addr), len, args[2]) 92540fe15e0SLoGin } 92640fe15e0SLoGin } 92740fe15e0SLoGin 9281496ba7bSLoGin SYS_GETCWD => { 9291496ba7bSLoGin let buf = args[0] as *mut u8; 9301496ba7bSLoGin let size = args[1] as usize; 9311496ba7bSLoGin let security_check = || { 9321496ba7bSLoGin verify_area(VirtAddr::new(buf as usize), size)?; 9331496ba7bSLoGin return Ok(()); 9341496ba7bSLoGin }; 9351496ba7bSLoGin let r = security_check(); 9361496ba7bSLoGin if r.is_err() { 9371496ba7bSLoGin Err(r.unwrap_err()) 9381496ba7bSLoGin } else { 9391496ba7bSLoGin let buf = unsafe { core::slice::from_raw_parts_mut(buf, size) }; 9401496ba7bSLoGin Self::getcwd(buf).map(|ptr| ptr.data()) 9411496ba7bSLoGin } 9421496ba7bSLoGin } 9431496ba7bSLoGin 9441496ba7bSLoGin SYS_GETPGID => Self::getpgid(Pid::new(args[0])).map(|pid| pid.into()), 9451496ba7bSLoGin 9461496ba7bSLoGin SYS_GETPPID => Self::getppid().map(|pid| pid.into()), 947be63f3b2Shoumkh SYS_FSTAT => { 948be63f3b2Shoumkh let fd = args[0] as i32; 949be63f3b2Shoumkh let kstat = args[1] as *mut PosixKstat; 950be63f3b2Shoumkh let vaddr = VirtAddr::new(kstat as usize); 951be63f3b2Shoumkh // 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 952be63f3b2Shoumkh // TODO 应该将用了c版本的verify_area都改为rust的verify_area 953be63f3b2Shoumkh match verify_area(vaddr, core::mem::size_of::<PosixKstat>()) { 954be63f3b2Shoumkh Ok(_) => Self::fstat(fd, kstat), 955be63f3b2Shoumkh Err(e) => Err(e), 956be63f3b2Shoumkh } 957be63f3b2Shoumkh } 958be63f3b2Shoumkh 9596d81180bSLoGin SYS_FCNTL => { 9606d81180bSLoGin let fd = args[0] as i32; 9616d81180bSLoGin let cmd: Option<FcntlCommand> = 9626d81180bSLoGin <FcntlCommand as FromPrimitive>::from_u32(args[1] as u32); 9636d81180bSLoGin let arg = args[2] as i32; 9646d81180bSLoGin let res = if let Some(cmd) = cmd { 9656d81180bSLoGin Self::fcntl(fd, cmd, arg) 9666d81180bSLoGin } else { 9676d81180bSLoGin Err(SystemError::EINVAL) 9686d81180bSLoGin }; 9696d81180bSLoGin 9706d81180bSLoGin // kdebug!("FCNTL: fd: {}, cmd: {:?}, arg: {}, res: {:?}", fd, cmd, arg, res); 9716d81180bSLoGin res 9726d81180bSLoGin } 9736d81180bSLoGin 9746d81180bSLoGin SYS_FTRUNCATE => { 9756d81180bSLoGin let fd = args[0] as i32; 9766d81180bSLoGin let len = args[1] as usize; 9776d81180bSLoGin let res = Self::ftruncate(fd, len); 9786d81180bSLoGin // kdebug!("FTRUNCATE: fd: {}, len: {}, res: {:?}", fd, len, res); 9796d81180bSLoGin res 9806d81180bSLoGin } 9816d81180bSLoGin 982*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 9832dbef785SGnoCiYeH SYS_MKNOD => { 9842dbef785SGnoCiYeH let path = args[0]; 9852dbef785SGnoCiYeH let flags = args[1]; 9862dbef785SGnoCiYeH let dev_t = args[2]; 9872dbef785SGnoCiYeH let flags: ModeType = ModeType::from_bits_truncate(flags as u32); 988*4fda81ceSLoGin Self::mknod( 989*4fda81ceSLoGin path as *const i8, 990*4fda81ceSLoGin flags, 991*4fda81ceSLoGin crate::driver::base::device::DeviceNumber::from(dev_t), 992*4fda81ceSLoGin ) 9932dbef785SGnoCiYeH } 9942dbef785SGnoCiYeH 995971462beSGnoCiYeH SYS_CLONE => { 996971462beSGnoCiYeH let parent_tid = VirtAddr::new(args[2]); 997971462beSGnoCiYeH let child_tid = VirtAddr::new(args[3]); 998971462beSGnoCiYeH 999971462beSGnoCiYeH // 地址校验 1000971462beSGnoCiYeH verify_area(parent_tid, core::mem::size_of::<i32>())?; 1001971462beSGnoCiYeH verify_area(child_tid, core::mem::size_of::<i32>())?; 1002971462beSGnoCiYeH 1003971462beSGnoCiYeH let mut clone_args = KernelCloneArgs::new(); 1004971462beSGnoCiYeH clone_args.flags = CloneFlags::from_bits_truncate(args[0] as u64); 1005971462beSGnoCiYeH clone_args.stack = args[1]; 1006971462beSGnoCiYeH clone_args.parent_tid = parent_tid; 1007971462beSGnoCiYeH clone_args.child_tid = child_tid; 1008971462beSGnoCiYeH clone_args.tls = args[4]; 1009971462beSGnoCiYeH Self::clone(frame, clone_args) 1010971462beSGnoCiYeH } 1011971462beSGnoCiYeH 1012971462beSGnoCiYeH SYS_FUTEX => { 1013971462beSGnoCiYeH let uaddr = VirtAddr::new(args[0]); 1014971462beSGnoCiYeH let operation = FutexFlag::from_bits(args[1] as u32).ok_or(SystemError::ENOSYS)?; 1015971462beSGnoCiYeH let val = args[2] as u32; 1016971462beSGnoCiYeH let utime = args[3]; 1017971462beSGnoCiYeH let uaddr2 = VirtAddr::new(args[4]); 1018971462beSGnoCiYeH let val3 = args[5] as u32; 1019971462beSGnoCiYeH 1020971462beSGnoCiYeH verify_area(uaddr, core::mem::size_of::<u32>())?; 1021971462beSGnoCiYeH verify_area(uaddr2, core::mem::size_of::<u32>())?; 1022971462beSGnoCiYeH 1023971462beSGnoCiYeH let mut timespec = None; 1024971462beSGnoCiYeH if utime != 0 && operation.contains(FutexFlag::FLAGS_HAS_TIMEOUT) { 1025971462beSGnoCiYeH let reader = UserBufferReader::new( 1026971462beSGnoCiYeH utime as *const TimeSpec, 1027971462beSGnoCiYeH core::mem::size_of::<TimeSpec>(), 1028971462beSGnoCiYeH true, 1029971462beSGnoCiYeH )?; 1030971462beSGnoCiYeH 1031971462beSGnoCiYeH timespec = Some(reader.read_one_from_user::<TimeSpec>(0)?.clone()); 1032971462beSGnoCiYeH } 1033971462beSGnoCiYeH 1034971462beSGnoCiYeH Self::do_futex(uaddr, operation, val, timespec, uaddr2, utime as u32, val3) 1035971462beSGnoCiYeH } 1036971462beSGnoCiYeH 1037bf4a4899SLoGin SYS_READV => Self::readv(args[0] as i32, args[1], args[2]), 1038971462beSGnoCiYeH SYS_WRITEV => Self::writev(args[0] as i32, args[1], args[2]), 1039971462beSGnoCiYeH 1040*4fda81ceSLoGin SYS_SET_TID_ADDRESS => Self::set_tid_address(args[0]), 1041971462beSGnoCiYeH 1042*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 1043*4fda81ceSLoGin SYS_LSTAT => { 1044971462beSGnoCiYeH let path: &CStr = unsafe { CStr::from_ptr(args[0] as *const c_char) }; 1045971462beSGnoCiYeH let path: Result<&str, core::str::Utf8Error> = path.to_str(); 1046971462beSGnoCiYeH let res = if path.is_err() { 1047971462beSGnoCiYeH Err(SystemError::EINVAL) 1048971462beSGnoCiYeH } else { 1049971462beSGnoCiYeH let path: &str = path.unwrap(); 1050971462beSGnoCiYeH let kstat = args[1] as *mut PosixKstat; 1051971462beSGnoCiYeH let vaddr = VirtAddr::new(kstat as usize); 1052971462beSGnoCiYeH match verify_area(vaddr, core::mem::size_of::<PosixKstat>()) { 1053*4fda81ceSLoGin Ok(_) => Self::lstat(path, kstat), 1054*4fda81ceSLoGin Err(e) => Err(e), 1055*4fda81ceSLoGin } 1056*4fda81ceSLoGin }; 1057*4fda81ceSLoGin 1058*4fda81ceSLoGin res 1059*4fda81ceSLoGin } 1060*4fda81ceSLoGin 1061*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 1062*4fda81ceSLoGin SYS_STAT => { 1063*4fda81ceSLoGin let path: &CStr = unsafe { CStr::from_ptr(args[0] as *const c_char) }; 1064*4fda81ceSLoGin let path: Result<&str, core::str::Utf8Error> = path.to_str(); 1065*4fda81ceSLoGin let res = if path.is_err() { 1066*4fda81ceSLoGin Err(SystemError::EINVAL) 1067bf4a4899SLoGin } else { 1068*4fda81ceSLoGin let path: &str = path.unwrap(); 1069*4fda81ceSLoGin let kstat = args[1] as *mut PosixKstat; 1070*4fda81ceSLoGin let vaddr = VirtAddr::new(kstat as usize); 1071*4fda81ceSLoGin match verify_area(vaddr, core::mem::size_of::<PosixKstat>()) { 1072*4fda81ceSLoGin Ok(_) => Self::stat(path, kstat), 1073971462beSGnoCiYeH Err(e) => Err(e), 1074971462beSGnoCiYeH } 1075971462beSGnoCiYeH }; 1076971462beSGnoCiYeH 1077971462beSGnoCiYeH res 1078971462beSGnoCiYeH } 1079971462beSGnoCiYeH 1080971462beSGnoCiYeH // 目前为了适配musl-libc,以下系统调用先这样写着 1081*4fda81ceSLoGin SYS_GETRANDOM => { 1082971462beSGnoCiYeH let flags = GRandFlags::from_bits(args[2] as u8).ok_or(SystemError::EINVAL)?; 1083971462beSGnoCiYeH Self::get_random(args[0] as *mut u8, args[1], flags) 1084971462beSGnoCiYeH } 1085971462beSGnoCiYeH 1086*4fda81ceSLoGin SYS_SOCKETPAIR => { 1087971462beSGnoCiYeH unimplemented!() 1088971462beSGnoCiYeH } 1089971462beSGnoCiYeH 1090*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 1091971462beSGnoCiYeH SYS_POLL => { 1092971462beSGnoCiYeH kwarn!("SYS_POLL has not yet been implemented"); 1093971462beSGnoCiYeH Ok(0) 1094971462beSGnoCiYeH } 1095971462beSGnoCiYeH 1096971462beSGnoCiYeH SYS_RT_SIGPROCMASK => { 1097971462beSGnoCiYeH kwarn!("SYS_RT_SIGPROCMASK has not yet been implemented"); 1098971462beSGnoCiYeH Ok(0) 1099971462beSGnoCiYeH } 1100971462beSGnoCiYeH 1101971462beSGnoCiYeH SYS_TKILL => { 1102971462beSGnoCiYeH kwarn!("SYS_TKILL has not yet been implemented"); 1103971462beSGnoCiYeH Ok(0) 1104971462beSGnoCiYeH } 1105971462beSGnoCiYeH 1106971462beSGnoCiYeH SYS_SIGALTSTACK => { 1107971462beSGnoCiYeH kwarn!("SYS_SIGALTSTACK has not yet been implemented"); 1108971462beSGnoCiYeH Ok(0) 1109971462beSGnoCiYeH } 1110971462beSGnoCiYeH 111116033951SGnoCiYeH SYS_EXIT_GROUP => { 111216033951SGnoCiYeH kwarn!("SYS_EXIT_GROUP has not yet been implemented"); 111316033951SGnoCiYeH Ok(0) 111416033951SGnoCiYeH } 111516033951SGnoCiYeH 111604babc3fSMemoryShore SYS_MADVISE => { 111704babc3fSMemoryShore kwarn!("SYS_MADVISE has not yet been implemented"); 111804babc3fSMemoryShore Ok(0) 111904babc3fSMemoryShore } 1120393f6915SLoGin SYS_GETTID => Self::gettid().map(|tid| tid.into()), 112102e249f3SLoGin SYS_GETUID => Self::getuid().map(|uid| uid.into()), 112202e249f3SLoGin SYS_SYSLOG => { 112302e249f3SLoGin kwarn!("SYS_SYSLOG has not yet been implemented"); 112402e249f3SLoGin Ok(0) 112502e249f3SLoGin } 112602e249f3SLoGin SYS_GETGID => Self::getgid().map(|gid| gid.into()), 112702e249f3SLoGin SYS_SETUID => { 112802e249f3SLoGin kwarn!("SYS_SETUID has not yet been implemented"); 112902e249f3SLoGin Ok(0) 113002e249f3SLoGin } 113102e249f3SLoGin SYS_SETGID => { 113202e249f3SLoGin kwarn!("SYS_SETGID has not yet been implemented"); 113302e249f3SLoGin Ok(0) 113402e249f3SLoGin } 113502e249f3SLoGin SYS_GETEUID => Self::geteuid().map(|euid| euid.into()), 113602e249f3SLoGin SYS_GETEGID => Self::getegid().map(|egid| egid.into()), 1137be8cdf4bSLoGin SYS_GETRUSAGE => { 1138be8cdf4bSLoGin let who = args[0] as c_int; 1139be8cdf4bSLoGin let rusage = args[1] as *mut RUsage; 1140be8cdf4bSLoGin Self::get_rusage(who, rusage) 1141be8cdf4bSLoGin } 114204babc3fSMemoryShore 1143*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 1144709498caSLoGin SYS_READLINK => { 1145709498caSLoGin let path = args[0] as *const u8; 1146709498caSLoGin let buf = args[1] as *mut u8; 1147709498caSLoGin let bufsiz = args[2] as usize; 1148709498caSLoGin Self::readlink(path, buf, bufsiz) 1149709498caSLoGin } 1150709498caSLoGin 1151*4fda81ceSLoGin SYS_READLINKAT => { 1152709498caSLoGin let dirfd = args[0] as i32; 1153709498caSLoGin let pathname = args[1] as *const u8; 1154709498caSLoGin let buf = args[2] as *mut u8; 1155709498caSLoGin let bufsiz = args[3] as usize; 1156709498caSLoGin Self::readlink_at(dirfd, pathname, buf, bufsiz) 1157709498caSLoGin } 1158709498caSLoGin 11590d9b7d92SLoGin SYS_PRLIMIT64 => { 11600d9b7d92SLoGin let pid = args[0]; 11610d9b7d92SLoGin let pid = Pid::new(pid); 11620d9b7d92SLoGin let resource = args[1]; 11630d9b7d92SLoGin let new_limit = args[2] as *const RLimit64; 11640d9b7d92SLoGin let old_limit = args[3] as *mut RLimit64; 11650d9b7d92SLoGin 11660d9b7d92SLoGin Self::prlimit64(pid, resource, new_limit, old_limit) 11670d9b7d92SLoGin } 11680d9b7d92SLoGin 1169*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 11709b0abe6dSLoGin SYS_ACCESS => { 11719b0abe6dSLoGin let pathname = args[0] as *const u8; 11729b0abe6dSLoGin let mode = args[1] as u32; 11739b0abe6dSLoGin Self::access(pathname, mode) 11749b0abe6dSLoGin } 11759b0abe6dSLoGin 11769b0abe6dSLoGin SYS_FACCESSAT => { 11779b0abe6dSLoGin let dirfd = args[0] as i32; 11789b0abe6dSLoGin let pathname = args[1] as *const u8; 11799b0abe6dSLoGin let mode = args[2] as u32; 11809b0abe6dSLoGin Self::faccessat2(dirfd, pathname, mode, 0) 11819b0abe6dSLoGin } 11829b0abe6dSLoGin 11839b0abe6dSLoGin SYS_FACCESSAT2 => { 11849b0abe6dSLoGin let dirfd = args[0] as i32; 11859b0abe6dSLoGin let pathname = args[1] as *const u8; 11869b0abe6dSLoGin let mode = args[2] as u32; 11879b0abe6dSLoGin let flags = args[3] as u32; 11889b0abe6dSLoGin Self::faccessat2(dirfd, pathname, mode, flags) 11899b0abe6dSLoGin } 11909b0abe6dSLoGin 1191bf4a4899SLoGin SYS_CLOCK_GETTIME => { 1192bf4a4899SLoGin let clockid = args[0] as i32; 1193bf4a4899SLoGin let timespec = args[1] as *mut TimeSpec; 1194bf4a4899SLoGin Self::clock_gettime(clockid, timespec) 1195bf4a4899SLoGin } 1196bf4a4899SLoGin 1197bf4a4899SLoGin SYS_SYSINFO => { 1198bf4a4899SLoGin let info = args[0] as *mut SysInfo; 1199bf4a4899SLoGin Self::sysinfo(info) 1200bf4a4899SLoGin } 1201bf4a4899SLoGin 1202bf4a4899SLoGin SYS_UMASK => { 1203bf4a4899SLoGin let mask = args[0] as u32; 1204bf4a4899SLoGin Self::umask(mask) 1205bf4a4899SLoGin } 1206bf4a4899SLoGin 1207*4fda81ceSLoGin #[cfg(target_arch = "x86_64")] 1208bf4a4899SLoGin SYS_CHMOD => { 1209bf4a4899SLoGin let pathname = args[0] as *const u8; 1210bf4a4899SLoGin let mode = args[1] as u32; 1211bf4a4899SLoGin Self::chmod(pathname, mode) 1212bf4a4899SLoGin } 1213bf4a4899SLoGin SYS_FCHMOD => { 1214bf4a4899SLoGin let fd = args[0] as i32; 1215bf4a4899SLoGin let mode = args[1] as u32; 1216bf4a4899SLoGin Self::fchmod(fd, mode) 1217bf4a4899SLoGin } 1218bf4a4899SLoGin SYS_FCHMODAT => { 1219bf4a4899SLoGin let dirfd = args[0] as i32; 1220bf4a4899SLoGin let pathname = args[1] as *const u8; 1221bf4a4899SLoGin let mode = args[2] as u32; 1222bf4a4899SLoGin Self::fchmodat(dirfd, pathname, mode) 1223bf4a4899SLoGin } 1224bf4a4899SLoGin 1225ab5c8ca4Slogin _ => panic!("Unsupported syscall ID: {}", syscall_num), 1226ab5c8ca4Slogin }; 1227*4fda81ceSLoGin 1228ab5c8ca4Slogin return r; 1229ab5c8ca4Slogin } 1230ab5c8ca4Slogin 1231ab5c8ca4Slogin pub fn put_string( 1232ab5c8ca4Slogin s: *const u8, 1233ab5c8ca4Slogin front_color: u32, 1234ab5c8ca4Slogin back_color: u32, 1235ab5c8ca4Slogin ) -> Result<usize, SystemError> { 1236ab5c8ca4Slogin return Ok(unsafe { do_put_string(s, front_color, back_color) }); 1237ab5c8ca4Slogin } 1238ab5c8ca4Slogin 1239ab5c8ca4Slogin pub fn reboot() -> Result<usize, SystemError> { 1240*4fda81ceSLoGin unsafe { cpu_reset() }; 1241ab5c8ca4Slogin } 1242ab5c8ca4Slogin } 1243