refactor(epoll): epoll syscall refactor (#1180)

* feat(epoll): Move epoll functionality into filesystem module

Signed-off-by: sparkzky <sparkhhhhhhhhhh@outlook.com>

* refactor(epoll): refactor epoll syscall

Signed-off-by: sparkzky <sparkhhhhhhhhhh@outlook.com>

* feat(epoll): move do_epoll_wait into epoll_utils

Signed-off-by: sparkzky <sparkhhhhhhhhhh@outlook.com>

* fmt

Signed-off-by: sparkzky <sparkhhhhhhhhhh@outlook.com>

---------

Signed-off-by: sparkzky <sparkhhhhhhhhhh@outlook.com>

kernel/src/driver/tty/pty/unix98pty.rs

@@ -10,6 +10,7 @@ use crate::{
     },
     filesystem::{
         devpts::DevPtsFs,
+        epoll::EPollEventType,
         vfs::{
             file::FileMode, syscall::ModeType, FilePrivateData, FileType, MountFS, ROOT_INODE,
             VFS_MAX_FOLLOW_SYMLINK_TIMES,
@@ -17,7 +18,6 @@ use crate::{
     },
     libs::spinlock::SpinLockGuard,
     mm::VirtAddr,
-    net::event_poll::EPollEventType,
     syscall::user_access::UserBufferWriter,
 };
 

kernel/src/driver/tty/tty_core.rs

@@ -12,13 +12,13 @@ use system_error::SystemError;
 
 use crate::{
     driver::{base::device::device_number::DeviceNumber, tty::pty::ptm_driver},
+    filesystem::epoll::{EPollEventType, EPollItem},
     libs::{
         rwlock::{RwLock, RwLockReadGuard, RwLockUpgradableGuard, RwLockWriteGuard},
         spinlock::{SpinLock, SpinLockGuard},
         wait_queue::EventWaitQueue,
     },
     mm::VirtAddr,
-    net::event_poll::{EPollEventType, EPollItem},
     process::{process_group::Pgid, session::Sid, ProcessControlBlock},
     syscall::user_access::{UserBufferReader, UserBufferWriter},
 };

kernel/src/driver/tty/tty_device.rs

@@ -25,6 +25,7 @@ use crate::{
     },
     filesystem::{
         devfs::{devfs_register, DevFS, DeviceINode},
+        epoll::EPollItem,
         kernfs::KernFSInode,
         vfs::{
             file::FileMode, syscall::ModeType, FilePrivateData, FileType, IndexNode, Metadata,
@@ -37,7 +38,6 @@ use crate::{
         spinlock::SpinLockGuard,
     },
     mm::VirtAddr,
-    net::event_poll::EPollItem,
     process::ProcessManager,
     syscall::user_access::{UserBufferReader, UserBufferWriter},
 };

kernel/src/driver/tty/tty_ldisc/ntty.rs

@@ -15,13 +15,12 @@ use crate::{
         tty_driver::{TtyDriverFlag, TtyOperation},
         tty_job_control::TtyJobCtrlManager,
     },
-    filesystem::vfs::file::FileMode,
+    filesystem::{epoll::EPollEventType, vfs::file::FileMode},
     libs::{
         rwlock::RwLockReadGuard,
         spinlock::{SpinLock, SpinLockGuard},
     },
     mm::VirtAddr,
-    net::event_poll::EPollEventType,
     process::{ProcessFlags, ProcessManager},
     syscall::{user_access::UserBufferWriter, Syscall},
 };

kernel/src/driver/tty/tty_port.rs

@@ -5,8 +5,8 @@ use kdepends::thingbuf::mpsc;
 use system_error::SystemError;
 
 use crate::{
+    filesystem::epoll::{event_poll::EventPoll, EPollEventType},
     libs::spinlock::{SpinLock, SpinLockGuard},
-    net::event_poll::{EPollEventType, EventPoll},
 };
 
 use super::tty_core::TtyCore;

kernel/src/net/event_poll/mod.rs → kernel/src/filesystem/epoll/event_poll.rs

@@ -3,21 +3,13 @@ use core::{
     sync::atomic::{AtomicBool, Ordering},
 };
 
-use alloc::{
-    collections::LinkedList,
-    sync::{Arc, Weak},
-    vec::Vec,
-};
-use system_error::SystemError;
-
 use crate::{
     filesystem::vfs::{
         file::{File, FileMode},
-        FilePrivateData, IndexNode, Metadata,
+        FilePrivateData,
     },
     libs::{
         rbtree::RBTree,
-        rwlock::RwLock,
         spinlock::{SpinLock, SpinLockGuard},
         wait_queue::WaitQueue,
     },
@@ -29,10 +21,14 @@ use crate::{
     },
 };
 
-pub mod syscall;
+use alloc::{
+    collections::LinkedList,
+    sync::{Arc, Weak},
+    vec::Vec,
+};
+use system_error::SystemError;
 
-#[derive(Debug, Clone)]
-pub struct LockedEventPoll(Arc<SpinLock<EventPoll>>);
+use super::{fs::EPollInode, EPollCtlOption, EPollEvent, EPollEventType, EPollItem};
 
 /// 内核的Epoll对象结构体，当用户创建一个Epoll时，内核就会创建一个该类型对象
 /// 它对应一个epfd
@@ -49,138 +45,6 @@ pub struct EventPoll {
     self_ref: Option<Weak<SpinLock<EventPoll>>>,
 }
 
-/// EpollItem表示的是Epoll所真正管理的对象
-/// 每当用户向Epoll添加描述符时都会注册一个新的EpollItem，EpollItem携带了一些被监听的描述符的必要信息
-#[derive(Debug)]
-pub struct EPollItem {
-    /// 对应的Epoll
-    epoll: Weak<SpinLock<EventPoll>>,
-    /// 用户注册的事件
-    event: RwLock<EPollEvent>,
-    /// 监听的描述符
-    fd: i32,
-    /// 对应的文件
-    file: Weak<File>,
-}
-
-impl EPollItem {
-    pub fn new(
-        epoll: Weak<SpinLock<EventPoll>>,
-        events: EPollEvent,
-        fd: i32,
-        file: Weak<File>,
-    ) -> Self {
-        Self {
-            epoll,
-            event: RwLock::new(events),
-            fd,
-            file,
-        }
-    }
-
-    pub fn epoll(&self) -> Weak<SpinLock<EventPoll>> {
-        self.epoll.clone()
-    }
-
-    pub fn event(&self) -> &RwLock<EPollEvent> {
-        &self.event
-    }
-
-    pub fn file(&self) -> Weak<File> {
-        self.file.clone()
-    }
-
-    pub fn fd(&self) -> i32 {
-        self.fd
-    }
-
-    /// ## 通过epoll_item来执行绑定文件的poll方法，并获取到感兴趣的事件
-    fn ep_item_poll(&self) -> EPollEventType {
-        let file = self.file.upgrade();
-        if file.is_none() {
-            return EPollEventType::empty();
-        }
-        if let Ok(events) = file.unwrap().poll() {
-            let events = events as u32 & self.event.read().events;
-            return EPollEventType::from_bits_truncate(events);
-        }
-        return EPollEventType::empty();
-    }
-}
-
-/// ### Epoll文件的私有信息
-#[derive(Debug, Clone)]
-pub struct EPollPrivateData {
-    epoll: LockedEventPoll,
-}
-
-/// ### 该结构体将Epoll加入文件系统
-#[derive(Debug)]
-pub struct EPollInode {
-    epoll: LockedEventPoll,
-}
-
-impl EPollInode {
-    pub fn new(epoll: LockedEventPoll) -> Arc<Self> {
-        Arc::new(Self { epoll })
-    }
-}
-
-impl IndexNode for EPollInode {
-    fn read_at(
-        &self,
-        _offset: usize,
-        _len: usize,
-        _buf: &mut [u8],
-        _data: SpinLockGuard<FilePrivateData>,
-    ) -> Result<usize, SystemError> {
-        Err(SystemError::ENOSYS)
-    }
-
-    fn write_at(
-        &self,
-        _offset: usize,
-        _len: usize,
-        _buf: &[u8],
-        _data: SpinLockGuard<FilePrivateData>,
-    ) -> Result<usize, SystemError> {
-        Err(SystemError::ENOSYS)
-    }
-
-    fn fs(&self) -> Arc<dyn crate::filesystem::vfs::FileSystem> {
-        todo!()
-    }
-
-    fn as_any_ref(&self) -> &dyn core::any::Any {
-        self
-    }
-
-    fn list(&self) -> Result<Vec<alloc::string::String>, SystemError> {
-        Err(SystemError::ENOSYS)
-    }
-
-    fn metadata(&self) -> Result<Metadata, SystemError> {
-        Ok(Metadata::default())
-    }
-
-    fn close(&self, _data: SpinLockGuard<FilePrivateData>) -> Result<(), SystemError> {
-        // 释放资源
-        let mut epoll = self.epoll.0.lock_irqsave();
-
-        epoll.close()?;
-
-        Ok(())
-    }
-
-    fn open(
-        &self,
-        _data: SpinLockGuard<FilePrivateData>,
-        _mode: &FileMode,
-    ) -> Result<(), SystemError> {
-        Ok(())
-    }
-}
-
 impl EventPoll {
     pub const EP_MAX_EVENTS: u32 = u32::MAX / (core::mem::size_of::<EPollEvent>() as u32);
     /// 用于获取inode中的epitem队列
@@ -196,7 +60,7 @@ impl EventPoll {
     }
 
     /// 关闭epoll时，执行的逻辑
-    fn close(&mut self) -> Result<(), SystemError> {
+    pub(super) fn close(&mut self) -> Result<(), SystemError> {
         // 唤醒epoll上面等待的所有进程
         self.shutdown.store(true, Ordering::SeqCst);
         self.ep_wake_all();
@@ -812,131 +676,11 @@ impl EventPoll {
     }
 }
 
-/// 与C兼容的Epoll事件结构体
-#[derive(Copy, Clone, Default)]
-#[repr(packed)]
-#[repr(C)]
-pub struct EPollEvent {
-    /// 表示触发的事件
-    events: u32,
-    /// 内核态不使用该字段，该字段由用户态自由使用，在事件发生时内核将会原样返回
-    data: u64,
-}
-
-impl Debug for EPollEvent {
-    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
-        let events = self.events;
-        let u64 = self.data;
-        f.debug_struct("epoll_event")
-            .field("events", &events)
-            .field("data", &u64)
-            .finish()
-    }
-}
-
-impl EPollEvent {
-    pub fn set_events(&mut self, events: u32) {
-        self.events = events;
-    }
-
-    pub fn events(&self) -> u32 {
-        self.events
-    }
-
-    pub fn set_data(&mut self, data: u64) {
-        self.data = data;
-    }
-
-    pub fn data(&self) -> u64 {
-        self.data
-    }
-}
-
-/// ## epoll_ctl函数的参数
-#[derive(Debug, PartialEq)]
-pub enum EPollCtlOption {
-    /// 注册新的文件描述符到epfd
-    Add,
-    /// 将对应的文件描述符从epfd中删除
-    Del,
-    /// 修改已经注册的文件描述符的监听事件
-    Mod,
-}
-
-impl EPollCtlOption {
-    pub fn from_op_num(op: usize) -> Result<Self, SystemError> {
-        match op {
-            1 => Ok(Self::Add),
-            2 => Ok(Self::Del),
-            3 => Ok(Self::Mod),
-            _ => Err(SystemError::EINVAL),
-        }
-    }
-}
+#[derive(Debug, Clone)]
+pub struct LockedEventPoll(pub(super) Arc<SpinLock<EventPoll>>);
 
-bitflags! {
-    #[allow(dead_code)]
-    pub struct EPollEventType: u32 {
-        /// 对应的描述符有新的数据可读时会触发
-        const EPOLLIN = 0x00000001;
-        /// 对应的描述符有紧急数据可读时会触发
-        const EPOLLPRI = 0x00000002;
-        /// 对应的描述符可以写入数据时会触发
-        const EPOLLOUT = 0x00000004;
-        /// 对应的描述符发生错误时会触发
-        const EPOLLERR = 0x00000008;
-        /// 对应的描述符被挂断（连接关闭）时会触发
-        const EPOLLHUP = 0x00000010;
-        /// 对应的描述符不是一个有效的文件描述符时会触发
-        const EPOLLNVAL = 0x00000020;
-        /// 普通数据可读，类似于`EPOLLIN`
-        const EPOLLRDNORM = 0x00000040;
-        /// 优先级带外数据可读
-        const EPOLLRDBAND = 0x00000080;
-        /// 普通数据可写，类似于'EPOLLOUT'
-        const EPOLLWRNORM = 0x00000100;
-        /// 优先级带外数据可写
-        const EPOLLWRBAND = 0x00000200;
-        /// 通过消息队列收到消息时会触
-        const EPOLLMSG = 0x00000400;
-        /// 对应的描述符被挂断（连接关闭）的一端发送了 FIN 时会触发(读关闭)
-        const EPOLLRDHUP = 0x00002000;
-
-        /// 以下为额外选项
-        ///
-        /// 特定选项，用于异步 I/O，目前未实现
-        const EPOLL_URING_WAKE = 1u32 << 27;
-        /// 设置epoll为独占模式
-        const EPOLLEXCLUSIVE = 1u32 << 28;
-        ///  允许在系统挂起时唤醒 epoll，通常用于通过 eventfd 或 timerfd 唤醒 epoll,(通常与电源管理相关，未实现)
-        const EPOLLWAKEUP = 1u32 << 29;
-        /// 表示只监听一次事件，之后需要重新添加
-        const EPOLLONESHOT = 1u32 << 30;
-
-        /// 启用边缘触发模式(即只有下次触发事件时才会通过epoll_wait返回)，
-        /// 对应为水平触发(默认)，水平触发模式下若这次未处理完数据，那epoll还会将其加入自己的就绪队列
-        const EPOLLET = 1u32 << 31;
-
-        /// 以下为组合码
-        const EPOLLINOUT_BITS = Self::EPOLLIN.bits | Self::EPOLLOUT.bits;
-        const EPOLLEXCLUSIVE_OK_BITS =
-            Self::EPOLLINOUT_BITS.bits
-            | Self::EPOLLERR.bits
-            | Self::EPOLLHUP.bits
-            | Self::EPOLLWAKEUP.bits
-            | Self::EPOLLET.bits
-            | Self::EPOLLEXCLUSIVE.bits;
-
-        const EP_PRIVATE_BITS =
-            Self::EPOLLWAKEUP.bits
-            | Self::EPOLLONESHOT.bits
-            | Self::EPOLLET.bits
-            | Self::EPOLLEXCLUSIVE.bits;
-
-        /// 表示epoll已经被释放，但是在目前的设计中未用到
-        const POLLFREE = 0x4000;
-
-        /// listen状态的socket可以接受连接
-        const EPOLL_LISTEN_CAN_ACCEPT = Self::EPOLLIN.bits | Self::EPOLLRDNORM.bits;
-    }
+/// ### Epoll文件的私有信息
+#[derive(Debug, Clone)]
+pub struct EPollPrivateData {
+    pub(super) epoll: LockedEventPoll,
 }

kernel/src/filesystem/epoll/fs.rs

@@ -0,0 +1,77 @@
+use crate::{
+    filesystem::vfs::{file::FileMode, FilePrivateData, IndexNode, Metadata},
+    libs::spinlock::SpinLockGuard,
+};
+
+use alloc::sync::Arc;
+use alloc::vec::Vec;
+use system_error::SystemError;
+
+use super::event_poll::LockedEventPoll;
+
+/// ### 该结构体将Epoll加入文件系统
+#[derive(Debug)]
+pub struct EPollInode {
+    pub epoll: LockedEventPoll,
+}
+
+impl EPollInode {
+    pub fn new(epoll: LockedEventPoll) -> Arc<Self> {
+        Arc::new(Self { epoll })
+    }
+}
+
+impl IndexNode for EPollInode {
+    fn read_at(
+        &self,
+        _offset: usize,
+        _len: usize,
+        _buf: &mut [u8],
+        _data: SpinLockGuard<FilePrivateData>,
+    ) -> Result<usize, SystemError> {
+        Err(SystemError::ENOSYS)
+    }
+
+    fn write_at(
+        &self,
+        _offset: usize,
+        _len: usize,
+        _buf: &[u8],
+        _data: SpinLockGuard<FilePrivateData>,
+    ) -> Result<usize, SystemError> {
+        Err(SystemError::ENOSYS)
+    }
+
+    fn fs(&self) -> Arc<dyn crate::filesystem::vfs::FileSystem> {
+        todo!()
+    }
+
+    fn as_any_ref(&self) -> &dyn core::any::Any {
+        self
+    }
+
+    fn list(&self) -> Result<Vec<alloc::string::String>, SystemError> {
+        Err(SystemError::ENOSYS)
+    }
+
+    fn metadata(&self) -> Result<Metadata, SystemError> {
+        Ok(Metadata::default())
+    }
+
+    fn close(&self, _data: SpinLockGuard<FilePrivateData>) -> Result<(), SystemError> {
+        // 释放资源
+        let mut epoll = self.epoll.0.lock_irqsave();
+
+        epoll.close()?;
+
+        Ok(())
+    }
+
+    fn open(
+        &self,
+        _data: SpinLockGuard<FilePrivateData>,
+        _mode: &FileMode,
+    ) -> Result<(), SystemError> {
+        Ok(())
+    }
+}

kernel/src/filesystem/epoll/mod.rs

@@ -0,0 +1,197 @@
+use super::vfs::file::File;
+use crate::libs::{rwlock::RwLock, spinlock::SpinLock};
+use alloc::sync::Weak;
+use core::fmt::Debug;
+use event_poll::EventPoll;
+use system_error::SystemError;
+
+pub mod event_poll;
+pub mod fs;
+
+/// 与C兼容的Epoll事件结构体
+#[derive(Copy, Clone, Default)]
+#[repr(packed)]
+#[repr(C)]
+pub struct EPollEvent {
+    /// 表示触发的事件
+    events: u32,
+    /// 内核态不使用该字段，该字段由用户态自由使用，在事件发生时内核将会原样返回
+    data: u64,
+}
+
+impl Debug for EPollEvent {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        let events = self.events;
+        let u64 = self.data;
+        f.debug_struct("epoll_event")
+            .field("events", &events)
+            .field("data", &u64)
+            .finish()
+    }
+}
+
+impl EPollEvent {
+    pub fn set_events(&mut self, events: u32) {
+        self.events = events;
+    }
+
+    pub fn events(&self) -> u32 {
+        self.events
+    }
+
+    pub fn set_data(&mut self, data: u64) {
+        self.data = data;
+    }
+
+    pub fn data(&self) -> u64 {
+        self.data
+    }
+}
+
+/// EpollItem表示的是Epoll所真正管理的对象
+/// 每当用户向Epoll添加描述符时都会注册一个新的EpollItem，EpollItem携带了一些被监听的描述符的必要信息
+#[derive(Debug)]
+pub struct EPollItem {
+    /// 对应的Epoll
+    epoll: Weak<SpinLock<EventPoll>>,
+    /// 用户注册的事件
+    event: RwLock<EPollEvent>,
+    /// 监听的描述符
+    fd: i32,
+    /// 对应的文件
+    file: Weak<File>,
+}
+
+impl EPollItem {
+    pub fn new(
+        epoll: Weak<SpinLock<EventPoll>>,
+        events: EPollEvent,
+        fd: i32,
+        file: Weak<File>,
+    ) -> Self {
+        Self {
+            epoll,
+            event: RwLock::new(events),
+            fd,
+            file,
+        }
+    }
+
+    pub fn epoll(&self) -> Weak<SpinLock<EventPoll>> {
+        self.epoll.clone()
+    }
+
+    pub fn event(&self) -> &RwLock<EPollEvent> {
+        &self.event
+    }
+
+    pub fn file(&self) -> Weak<File> {
+        self.file.clone()
+    }
+
+    pub fn fd(&self) -> i32 {
+        self.fd
+    }
+
+    /// ## 通过epoll_item来执行绑定文件的poll方法，并获取到感兴趣的事件
+    fn ep_item_poll(&self) -> EPollEventType {
+        let file = self.file.upgrade();
+        if file.is_none() {
+            return EPollEventType::empty();
+        }
+        if let Ok(events) = file.unwrap().poll() {
+            let events = events as u32 & self.event.read().events;
+            return EPollEventType::from_bits_truncate(events);
+        }
+        return EPollEventType::empty();
+    }
+}
+
+/// ## epoll_ctl函数的参数
+#[derive(Debug, PartialEq)]
+pub enum EPollCtlOption {
+    /// 注册新的文件描述符到epfd
+    Add,
+    /// 将对应的文件描述符从epfd中删除
+    Del,
+    /// 修改已经注册的文件描述符的监听事件
+    Mod,
+}
+
+impl EPollCtlOption {
+    pub fn from_op_num(op: usize) -> Result<Self, SystemError> {
+        match op {
+            1 => Ok(Self::Add),
+            2 => Ok(Self::Del),
+            3 => Ok(Self::Mod),
+            _ => Err(SystemError::EINVAL),
+        }
+    }
+}
+
+bitflags! {
+    #[allow(dead_code)]
+    pub struct EPollEventType: u32 {
+        /// 对应的描述符有新的数据可读时会触发
+        const EPOLLIN = 0x00000001;
+        /// 对应的描述符有紧急数据可读时会触发
+        const EPOLLPRI = 0x00000002;
+        /// 对应的描述符可以写入数据时会触发
+        const EPOLLOUT = 0x00000004;
+        /// 对应的描述符发生错误时会触发
+        const EPOLLERR = 0x00000008;
+        /// 对应的描述符被挂断（连接关闭）时会触发
+        const EPOLLHUP = 0x00000010;
+        /// 对应的描述符不是一个有效的文件描述符时会触发
+        const EPOLLNVAL = 0x00000020;
+        /// 普通数据可读，类似于`EPOLLIN`
+        const EPOLLRDNORM = 0x00000040;
+        /// 优先级带外数据可读
+        const EPOLLRDBAND = 0x00000080;
+        /// 普通数据可写，类似于'EPOLLOUT'
+        const EPOLLWRNORM = 0x00000100;
+        /// 优先级带外数据可写
+        const EPOLLWRBAND = 0x00000200;
+        /// 通过消息队列收到消息时会触
+        const EPOLLMSG = 0x00000400;
+        /// 对应的描述符被挂断（连接关闭）的一端发送了 FIN 时会触发(读关闭)
+        const EPOLLRDHUP = 0x00002000;
+
+        /// 以下为额外选项
+        ///
+        /// 特定选项，用于异步 I/O，目前未实现
+        const EPOLL_URING_WAKE = 1u32 << 27;
+        /// 设置epoll为独占模式
+        const EPOLLEXCLUSIVE = 1u32 << 28;
+        ///  允许在系统挂起时唤醒 epoll，通常用于通过 eventfd 或 timerfd 唤醒 epoll,(通常与电源管理相关，未实现)
+        const EPOLLWAKEUP = 1u32 << 29;
+        /// 表示只监听一次事件，之后需要重新添加
+        const EPOLLONESHOT = 1u32 << 30;
+
+        /// 启用边缘触发模式(即只有下次触发事件时才会通过epoll_wait返回)，
+        /// 对应为水平触发(默认)，水平触发模式下若这次未处理完数据，那epoll还会将其加入自己的就绪队列
+        const EPOLLET = 1u32 << 31;
+
+        /// 以下为组合码
+        const EPOLLINOUT_BITS = Self::EPOLLIN.bits | Self::EPOLLOUT.bits;
+        const EPOLLEXCLUSIVE_OK_BITS =
+            Self::EPOLLINOUT_BITS.bits
+            | Self::EPOLLERR.bits
+            | Self::EPOLLHUP.bits
+            | Self::EPOLLWAKEUP.bits
+            | Self::EPOLLET.bits
+            | Self::EPOLLEXCLUSIVE.bits;
+
+        const EP_PRIVATE_BITS =
+            Self::EPOLLWAKEUP.bits
+            | Self::EPOLLONESHOT.bits
+            | Self::EPOLLET.bits
+            | Self::EPOLLEXCLUSIVE.bits;
+
+        /// 表示epoll已经被释放，但是在目前的设计中未用到
+        const POLLFREE = 0x4000;
+
+        /// listen状态的socket可以接受连接
+        const EPOLL_LISTEN_CAN_ACCEPT = Self::EPOLLIN.bits | Self::EPOLLRDNORM.bits;
+    }
+}

kernel/src/filesystem/eventfd.rs

@@ -1,10 +1,12 @@
 use super::vfs::PollableInode;
 use crate::filesystem::vfs::file::{File, FileMode};
 use crate::filesystem::vfs::syscall::ModeType;
-use crate::filesystem::vfs::{FilePrivateData, FileSystem, FileType, IndexNode, Metadata};
+use crate::filesystem::{
+    epoll::{event_poll::EventPoll, EPollEventType, EPollItem},
+    vfs::{FilePrivateData, FileSystem, FileType, IndexNode, Metadata},
+};
 use crate::libs::spinlock::{SpinLock, SpinLockGuard};
 use crate::libs::wait_queue::WaitQueue;
-use crate::net::event_poll::{EPollEventType, EPollItem, EventPoll};
 use crate::process::{ProcessFlags, ProcessManager};
 use crate::sched::SchedMode;
 use crate::syscall::Syscall;

kernel/src/filesystem/mod.rs

@@ -1,5 +1,6 @@
 pub mod devfs;
 pub mod devpts;
+pub mod epoll;
 pub mod eventfd;
 pub mod fat;
 pub mod kernfs;

kernel/src/filesystem/poll.rs

@@ -2,11 +2,11 @@ use core::ffi::c_int;
 
 use crate::{
     arch::ipc::signal::SigSet,
+    filesystem::epoll::{event_poll::EventPoll, EPollCtlOption, EPollEvent, EPollEventType},
     ipc::signal::{
         restore_saved_sigmask_unless, set_user_sigmask, RestartBlock, RestartBlockData, RestartFn,
     },
     mm::VirtAddr,
-    net::event_poll::{EPollCtlOption, EPollEvent, EPollEventType, EventPoll},
     process::ProcessManager,
     syscall::{
         user_access::{UserBufferReader, UserBufferWriter},

kernel/src/filesystem/vfs/file.rs

@@ -10,10 +10,12 @@ use crate::{
         base::{block::SeekFrom, device::DevicePrivateData},
         tty::tty_device::TtyFilePrivateData,
     },
-    filesystem::procfs::ProcfsFilePrivateData,
+    filesystem::{
+        epoll::{event_poll::EPollPrivateData, EPollItem},
+        procfs::ProcfsFilePrivateData,
+    },
     ipc::pipe::PipeFsPrivateData,
     libs::{rwlock::RwLock, spinlock::SpinLock},
-    net::event_poll::{EPollItem, EPollPrivateData},
     process::{cred::Cred, ProcessManager},
 };
 

kernel/src/filesystem/vfs/mod.rs

@@ -18,13 +18,13 @@ use crate::{
     driver::base::{
         block::block_device::BlockDevice, char::CharDevice, device::device_number::DeviceNumber,
     },
+    filesystem::epoll::EPollItem,
     ipc::pipe::LockedPipeInode,
     libs::{
         casting::DowncastArc,
         spinlock::{SpinLock, SpinLockGuard},
     },
     mm::{fault::PageFaultMessage, VmFaultReason},
-    net::event_poll::EPollItem,
     time::PosixTimeSpec,
 };
 

kernel/src/filesystem/vfs/syscall/epoll_utils.rs

@@ -0,0 +1,49 @@
+use crate::filesystem::epoll::event_poll::EventPoll;
+use crate::filesystem::epoll::EPollEvent;
+use crate::mm::VirtAddr;
+use crate::syscall::user_access::UserBufferWriter;
+use crate::time::PosixTimeSpec;
+use system_error::SystemError;
+
+/// System call handler for epoll_wait.
+///
+/// # Arguments
+/// * `epfd` - File descriptor of the epoll instance
+/// * `events` - User space address to store the events
+/// * `max_events` - Maximum number of events to return
+/// * `timeout` - Timeout in milliseconds, 0 for no wait, negative for infinite wait
+///
+/// # Returns
+/// Returns the number of events ready or an error if the operation fails.
+pub(super) fn do_epoll_wait(
+    epfd: i32,
+    events: VirtAddr,
+    max_events: i32,
+    timeout: i32,
+) -> Result<usize, SystemError> {
+    if max_events <= 0 || max_events as u32 > EventPoll::EP_MAX_EVENTS {
+        return Err(SystemError::EINVAL);
+    }
+
+    let mut timespec = None;
+    if timeout == 0 {
+        timespec = Some(PosixTimeSpec::new(0, 0));
+    }
+
+    if timeout > 0 {
+        let sec: i64 = timeout as i64 / 1000;
+        let nsec: i64 = 1000000 * (timeout as i64 % 1000);
+
+        timespec = Some(PosixTimeSpec::new(sec, nsec))
+    }
+
+    // 从用户传入的地址中拿到epoll_events
+    let mut epds_writer = UserBufferWriter::new(
+        events.as_ptr::<EPollEvent>(),
+        max_events as usize * core::mem::size_of::<EPollEvent>(),
+        true,
+    )?;
+
+    let epoll_events = epds_writer.buffer::<EPollEvent>(0)?;
+    return EventPoll::epoll_wait(epfd, epoll_events, max_events, timespec);
+}

kernel/src/filesystem/vfs/syscall/mod.rs

@@ -52,6 +52,15 @@ mod sys_stat;
 mod sys_write;
 mod sys_writev;
 
+mod epoll_utils;
+#[cfg(target_arch = "x86_64")]
+mod sys_epoll_create;
+mod sys_epoll_create1;
+mod sys_epoll_ctl;
+mod sys_epoll_pwait;
+#[cfg(target_arch = "x86_64")]
+mod sys_epoll_wait;
+
 pub const SEEK_SET: u32 = 0;
 pub const SEEK_CUR: u32 = 1;
 pub const SEEK_END: u32 = 2;

kernel/src/filesystem/vfs/syscall/sys_epoll_create.rs

@@ -0,0 +1,41 @@
+//! System call handler for epoll creation.
+
+use crate::arch::syscall::nr::SYS_EPOLL_CREATE;
+use crate::filesystem::epoll::event_poll::EventPoll;
+use crate::filesystem::vfs::file::FileMode;
+use crate::syscall::table::FormattedSyscallParam;
+use crate::syscall::table::Syscall;
+use alloc::vec::Vec;
+use system_error::SystemError;
+
+pub struct SysEpollCreateHandle;
+
+impl Syscall for SysEpollCreateHandle {
+    fn num_args(&self) -> usize {
+        1
+    }
+
+    fn handle(&self, args: &[usize], _from_user: bool) -> Result<usize, SystemError> {
+        let max_size = Self::max_size(args);
+        if max_size < 0 {
+            return Err(SystemError::EINVAL);
+        }
+
+        return EventPoll::create_epoll(FileMode::empty());
+    }
+
+    fn entry_format(&self, args: &[usize]) -> Vec<FormattedSyscallParam> {
+        vec![FormattedSyscallParam::new(
+            "max_size",
+            format!("{:#x}", Self::max_size(args) as usize),
+        )]
+    }
+}
+
+impl SysEpollCreateHandle {
+    fn max_size(args: &[usize]) -> i32 {
+        args[0] as i32
+    }
+}
+
+syscall_table_macros::declare_syscall!(SYS_EPOLL_CREATE, SysEpollCreateHandle);

kernel/src/filesystem/vfs/syscall/sys_epoll_create1.rs

@@ -0,0 +1,36 @@
+//! System call handler for epoll_create1.
+
+use crate::arch::syscall::nr::SYS_EPOLL_CREATE1;
+use crate::filesystem::epoll::event_poll::EventPoll;
+use crate::filesystem::vfs::file::FileMode;
+use crate::syscall::table::FormattedSyscallParam;
+use crate::syscall::table::Syscall;
+use alloc::vec::Vec;
+use system_error::SystemError;
+
+pub struct SysEpollCreate1Handle;
+
+impl Syscall for SysEpollCreate1Handle {
+    fn num_args(&self) -> usize {
+        1
+    }
+
+    fn handle(&self, args: &[usize], _from_user: bool) -> Result<usize, SystemError> {
+        return EventPoll::create_epoll(Self::flags(args));
+    }
+
+    fn entry_format(&self, args: &[usize]) -> Vec<FormattedSyscallParam> {
+        vec![FormattedSyscallParam::new(
+            "flags",
+            format!("{:#x}", Self::flags(args)),
+        )]
+    }
+}
+
+impl SysEpollCreate1Handle {
+    fn flags(args: &[usize]) -> FileMode {
+        FileMode::from_bits_truncate(args[0] as u32)
+    }
+}
+
+syscall_table_macros::declare_syscall!(SYS_EPOLL_CREATE1, SysEpollCreate1Handle);

kernel/src/filesystem/vfs/syscall/sys_epoll_ctl.rs

@@ -0,0 +1,74 @@
+//! System call handler for epoll_ctl.
+
+use crate::arch::syscall::nr::SYS_EPOLL_CTL;
+use crate::filesystem::epoll::event_poll::EventPoll;
+use crate::filesystem::epoll::EPollCtlOption;
+use crate::filesystem::epoll::EPollEvent;
+use crate::mm::VirtAddr;
+use crate::syscall::table::FormattedSyscallParam;
+use crate::syscall::table::Syscall;
+use crate::syscall::user_access::UserBufferReader;
+use alloc::vec::Vec;
+use system_error::SystemError;
+
+pub struct SysEpollCtlHandle;
+
+impl Syscall for SysEpollCtlHandle {
+    fn num_args(&self) -> usize {
+        4
+    }
+
+    fn handle(&self, args: &[usize], _from_user: bool) -> Result<usize, SystemError> {
+        let op = EPollCtlOption::from_op_num(Self::op(args))?;
+        let mut epds = EPollEvent::default();
+        let event = Self::event(args);
+        let epfd = Self::epfd(args);
+        let fd = Self::fd(args);
+
+        if op != EPollCtlOption::Del {
+            // 不为EpollCtlDel时不允许传入空指针
+            if event.is_null() {
+                return Err(SystemError::EFAULT);
+            }
+
+            // 还是一样的问题，C标准的epoll_event大小为12字节，而内核实现的epoll_event内存对齐后为16字节
+            // 这样分别拷贝其实和整体拷贝差别不大，内核使用内存对其版本甚至可能提升性能
+            let epds_reader = UserBufferReader::new(
+                event.as_ptr::<EPollEvent>(),
+                core::mem::size_of::<EPollEvent>(),
+                true,
+            )?;
+
+            // 拷贝到内核
+            epds_reader.copy_one_from_user(&mut epds, 0)?;
+        }
+
+        return EventPoll::epoll_ctl_with_epfd(epfd, op, fd, epds, false);
+    }
+
+    fn entry_format(&self, args: &[usize]) -> Vec<FormattedSyscallParam> {
+        vec![
+            FormattedSyscallParam::new("epfd", format!("{:#x}", Self::epfd(args) as usize)),
+            FormattedSyscallParam::new("op", format!("{:#x}", Self::op(args))),
+            FormattedSyscallParam::new("fd", format!("{:#x}", Self::fd(args) as usize)),
+            FormattedSyscallParam::new("event", format!("{:#x}", Self::event(args).data())),
+        ]
+    }
+}
+
+impl SysEpollCtlHandle {
+    fn epfd(args: &[usize]) -> i32 {
+        args[0] as i32
+    }
+    fn op(args: &[usize]) -> usize {
+        args[1]
+    }
+    fn fd(args: &[usize]) -> i32 {
+        args[2] as i32
+    }
+    fn event(args: &[usize]) -> VirtAddr {
+        VirtAddr::new(args[3])
+    }
+}
+
+syscall_table_macros::declare_syscall!(SYS_EPOLL_CTL, SysEpollCtlHandle);

kernel/src/filesystem/vfs/syscall/sys_epoll_pwait.rs

@@ -0,0 +1,79 @@
+//! System call handler for epoll_pwait.
+
+use crate::arch::ipc::signal::SigSet;
+use crate::arch::syscall::nr::SYS_EPOLL_PWAIT;
+use crate::ipc::signal::restore_saved_sigmask;
+use crate::ipc::signal::set_user_sigmask;
+use crate::mm::VirtAddr;
+use crate::syscall::table::FormattedSyscallParam;
+use crate::syscall::table::Syscall;
+use crate::syscall::user_access::UserBufferReader;
+use alloc::vec::Vec;
+use system_error::SystemError;
+
+use super::epoll_utils::do_epoll_wait;
+
+pub struct SysEpollPwaitHandle;
+
+impl Syscall for SysEpollPwaitHandle {
+    fn num_args(&self) -> usize {
+        5
+    }
+
+    fn handle(&self, args: &[usize], _from_user: bool) -> Result<usize, SystemError> {
+        let epfd = Self::epfd(args);
+        let epoll_event = Self::epoll_event(args);
+        let max_events = Self::max_events(args);
+        let timespec = Self::timespec(args);
+        let sigmask_addr = Self::sigmask_addr(args);
+
+        if sigmask_addr.is_null() {
+            return do_epoll_wait(epfd, epoll_event, max_events, timespec);
+        }
+        let sigmask_reader =
+            UserBufferReader::new(sigmask_addr, core::mem::size_of::<SigSet>(), true)?;
+        let mut sigmask = *sigmask_reader.read_one_from_user::<SigSet>(0)?;
+
+        set_user_sigmask(&mut sigmask);
+
+        let wait_ret = do_epoll_wait(epfd, epoll_event, max_events, timespec);
+
+        if wait_ret.is_err() && *wait_ret.as_ref().unwrap_err() != SystemError::EINTR {
+            restore_saved_sigmask();
+        }
+        wait_ret
+    }
+
+    fn entry_format(&self, args: &[usize]) -> Vec<FormattedSyscallParam> {
+        vec![
+            FormattedSyscallParam::new("epfd", format!("{:#x}", Self::epfd(args) as usize)),
+            FormattedSyscallParam::new("event", format!("{:#x}", Self::epoll_event(args).data())),
+            FormattedSyscallParam::new("max_events", format!("{:#x}", Self::max_events(args))),
+            FormattedSyscallParam::new("timespec", format!("{:#x}", Self::timespec(args))),
+            FormattedSyscallParam::new(
+                "sigmask_addr",
+                format!("{:#x}", Self::sigmask_addr(args) as usize),
+            ),
+        ]
+    }
+}
+
+impl SysEpollPwaitHandle {
+    fn epfd(args: &[usize]) -> i32 {
+        args[0] as i32
+    }
+    fn epoll_event(args: &[usize]) -> VirtAddr {
+        VirtAddr::new(args[1])
+    }
+    fn max_events(args: &[usize]) -> i32 {
+        args[2] as i32
+    }
+    fn timespec(args: &[usize]) -> i32 {
+        args[3] as i32
+    }
+    fn sigmask_addr(args: &[usize]) -> *mut SigSet {
+        args[4] as *mut SigSet
+    }
+}
+
+syscall_table_macros::declare_syscall!(SYS_EPOLL_PWAIT, SysEpollPwaitHandle);

kernel/src/filesystem/vfs/syscall/sys_epoll_wait.rs

@@ -0,0 +1,52 @@
+//! System call handler for epoll_wait.
+
+use super::epoll_utils::do_epoll_wait;
+use crate::arch::syscall::nr::SYS_EPOLL_WAIT;
+use crate::mm::VirtAddr;
+use crate::syscall::table::FormattedSyscallParam;
+use crate::syscall::table::Syscall;
+use alloc::vec::Vec;
+use system_error::SystemError;
+
+pub struct SysEpollWaitHandle;
+
+impl Syscall for SysEpollWaitHandle {
+    fn num_args(&self) -> usize {
+        4
+    }
+
+    fn handle(&self, args: &[usize], _from_user: bool) -> Result<usize, SystemError> {
+        let epfd = Self::epfd(args);
+        let max_events = Self::max_events(args);
+        let timeout = Self::timeout(args);
+        let events = Self::events(args);
+
+        do_epoll_wait(epfd, events, max_events, timeout)
+    }
+
+    fn entry_format(&self, args: &[usize]) -> Vec<FormattedSyscallParam> {
+        vec![
+            FormattedSyscallParam::new("epfd", format!("{:#x}", Self::epfd(args) as usize)),
+            FormattedSyscallParam::new("events", format!("{:#x}", Self::events(args).data())),
+            FormattedSyscallParam::new("max_events", format!("{:#x}", Self::max_events(args))),
+            FormattedSyscallParam::new("timeout", format!("{:#x}", Self::timeout(args))),
+        ]
+    }
+}
+
+impl SysEpollWaitHandle {
+    fn epfd(args: &[usize]) -> i32 {
+        args[0] as i32
+    }
+    fn events(args: &[usize]) -> VirtAddr {
+        VirtAddr::new(args[1])
+    }
+    fn max_events(args: &[usize]) -> i32 {
+        args[2] as i32
+    }
+    fn timeout(args: &[usize]) -> i32 {
+        args[3] as i32
+    }
+}
+
+syscall_table_macros::declare_syscall!(SYS_EPOLL_WAIT, SysEpollWaitHandle);

kernel/src/ipc/pipe.rs

@@ -2,15 +2,17 @@ use core::sync::atomic::compiler_fence;
 
 use crate::{
     arch::ipc::signal::{SigCode, Signal},
-    filesystem::vfs::{
-        file::FileMode, syscall::ModeType, vcore::generate_inode_id, FilePrivateData, FileSystem,
-        FileType, IndexNode, Metadata, PollableInode,
+    filesystem::{
+        epoll::{event_poll::EventPoll, EPollEventType, EPollItem},
+        vfs::{
+            file::FileMode, syscall::ModeType, vcore::generate_inode_id, FilePrivateData,
+            FileSystem, FileType, IndexNode, Metadata, PollableInode,
+        },
     },
     libs::{
         spinlock::{SpinLock, SpinLockGuard},
         wait_queue::WaitQueue,
     },
-    net::event_poll::{EPollEventType, EPollItem, EventPoll},
     process::{ProcessFlags, ProcessManager, ProcessState},
     sched::SchedMode,
     time::PosixTimeSpec,

kernel/src/net/event_poll/syscall.rs

@@ -1,108 +0,0 @@
-use system_error::SystemError;
-
-use crate::{
-    arch::ipc::signal::SigSet,
-    filesystem::vfs::file::FileMode,
-    ipc::signal::{restore_saved_sigmask, set_user_sigmask},
-    mm::VirtAddr,
-    syscall::{
-        user_access::{UserBufferReader, UserBufferWriter},
-        Syscall,
-    },
-    time::PosixTimeSpec,
-};
-
-use super::{EPollCtlOption, EPollEvent, EventPoll};
-
-impl Syscall {
-    pub fn epoll_create(max_size: i32) -> Result<usize, SystemError> {
-        if max_size < 0 {
-            return Err(SystemError::EINVAL);
-        }
-
-        return EventPoll::create_epoll(FileMode::empty());
-    }
-
-    pub fn epoll_create1(flag: usize) -> Result<usize, SystemError> {
-        let flags = FileMode::from_bits_truncate(flag as u32);
-
-        let ret = EventPoll::create_epoll(flags);
-        ret
-    }
-
-    pub fn epoll_wait(
-        epfd: i32,
-        events: VirtAddr,
-        max_events: i32,
-        timeout: i32,
-    ) -> Result<usize, SystemError> {
-        if max_events <= 0 || max_events as u32 > EventPoll::EP_MAX_EVENTS {
-            return Err(SystemError::EINVAL);
-        }
-
-        let mut timespec = None;
-        if timeout == 0 {
-            timespec = Some(PosixTimeSpec::new(0, 0));
-        }
-
-        if timeout > 0 {
-            let sec: i64 = timeout as i64 / 1000;
-            let nsec: i64 = 1000000 * (timeout as i64 % 1000);
-
-            timespec = Some(PosixTimeSpec::new(sec, nsec))
-        }
-
-        // 从用户传入的地址中拿到epoll_events
-        let mut epds_writer = UserBufferWriter::new(
-            events.as_ptr::<EPollEvent>(),
-            max_events as usize * core::mem::size_of::<EPollEvent>(),
-            true,
-        )?;
-
-        let epoll_events = epds_writer.buffer::<EPollEvent>(0)?;
-        return EventPoll::epoll_wait(epfd, epoll_events, max_events, timespec);
-    }
-
-    pub fn epoll_ctl(epfd: i32, op: usize, fd: i32, event: VirtAddr) -> Result<usize, SystemError> {
-        let op = EPollCtlOption::from_op_num(op)?;
-        let mut epds = EPollEvent::default();
-        if op != EPollCtlOption::Del {
-            // 不为EpollCtlDel时不允许传入空指针
-            if event.is_null() {
-                return Err(SystemError::EFAULT);
-            }
-
-            // 还是一样的问题，C标准的epoll_event大小为12字节，而内核实现的epoll_event内存对齐后为16字节
-            // 这样分别拷贝其实和整体拷贝差别不大，内核使用内存对其版本甚至可能提升性能
-            let epds_reader = UserBufferReader::new(
-                event.as_ptr::<EPollEvent>(),
-                core::mem::size_of::<EPollEvent>(),
-                true,
-            )?;
-
-            // 拷贝到内核
-            epds_reader.copy_one_from_user(&mut epds, 0)?;
-        }
-
-        return EventPoll::epoll_ctl_with_epfd(epfd, op, fd, epds, false);
-    }
-
-    /// ## 在epoll_wait时屏蔽某些信号
-    pub fn epoll_pwait(
-        epfd: i32,
-        epoll_event: VirtAddr,
-        max_events: i32,
-        timespec: i32,
-        sigmask: &mut SigSet,
-    ) -> Result<usize, SystemError> {
-        // 设置屏蔽的信号
-        set_user_sigmask(sigmask);
-
-        let wait_ret = Self::epoll_wait(epfd, epoll_event, max_events, timespec);
-
-        if wait_ret.is_err() && *wait_ret.as_ref().unwrap_err() != SystemError::EINTR {
-            restore_saved_sigmask();
-        }
-        wait_ret
-    }
-}

kernel/src/net/mod.rs

@@ -10,7 +10,6 @@ use smoltcp::wire::IpEndpoint;
 
 use self::socket::SocketInode;
 
-pub mod event_poll;
 pub mod net_core;
 pub mod socket;
 pub mod syscall;

kernel/src/net/net_core.rs

@@ -3,8 +3,10 @@ use log::{debug, info, warn};
 use smoltcp::{socket::dhcpv4, wire};
 use system_error::SystemError;
 
+use super::socket::{handle::GlobalSocketHandle, inet::TcpSocket, HANDLE_MAP, SOCKET_SET};
 use crate::{
     driver::net::{NetDevice, Operstate},
+    filesystem::epoll::{event_poll::EventPoll, EPollEventType},
     libs::rwlock::RwLockReadGuard,
     net::{socket::SocketPollMethod, NET_DEVICES},
     time::{
@@ -14,11 +16,6 @@ use crate::{
     },
 };
 
-use super::{
-    event_poll::{EPollEventType, EventPoll},
-    socket::{handle::GlobalSocketHandle, inet::TcpSocket, HANDLE_MAP, SOCKET_SET},
-};
-
 /// The network poll function, which will be called by timer.
 ///
 /// The main purpose of this function is to poll all network interfaces.

kernel/src/net/socket/inet.rs

@@ -8,11 +8,9 @@ use system_error::SystemError;
 
 use crate::{
     driver::net::NetDevice,
+    filesystem::epoll::EPollEventType,
     libs::rwlock::RwLock,
-    net::{
-        event_poll::EPollEventType, net_core::poll_ifaces, Endpoint, Protocol, ShutdownType,
-        NET_DEVICES,
-    },
+    net::{net_core::poll_ifaces, Endpoint, Protocol, ShutdownType, NET_DEVICES},
 };
 
 use super::{

kernel/src/net/socket/mod.rs

@@ -17,9 +17,12 @@ use system_error::SystemError;
 
 use crate::{
     arch::rand::rand,
-    filesystem::vfs::{
-        file::FileMode, syscall::ModeType, FilePrivateData, FileSystem, FileType, IndexNode,
-        Metadata, PollableInode,
+    filesystem::{
+        epoll::{EPollEventType, EPollItem},
+        vfs::{
+            file::FileMode, syscall::ModeType, FilePrivateData, FileSystem, FileType, IndexNode,
+            Metadata, PollableInode,
+        },
     },
     libs::{
         rwlock::{RwLock, RwLockWriteGuard},
@@ -36,10 +39,7 @@ use self::{
     unix::{SeqpacketSocket, StreamSocket},
 };
 
-use super::{
-    event_poll::{EPollEventType, EPollItem},
-    Endpoint, Protocol, ShutdownType,
-};
+use super::{Endpoint, Protocol, ShutdownType};
 
 pub mod handle;
 pub mod inet;

kernel/src/perf/mod.rs

@@ -2,6 +2,7 @@ mod bpf;
 mod kprobe;
 mod util;
 
+use crate::filesystem::epoll::{event_poll::EventPoll, EPollEventType, EPollItem};
 use crate::filesystem::page_cache::PageCache;
 use crate::filesystem::vfs::file::{File, FileMode};
 use crate::filesystem::vfs::syscall::ModeType;
@@ -15,7 +16,6 @@ use crate::libs::casting::DowncastArc;
 use crate::libs::spinlock::{SpinLock, SpinLockGuard};
 use crate::mm::fault::{PageFaultHandler, PageFaultMessage};
 use crate::mm::VmFaultReason;
-use crate::net::event_poll::{EPollEventType, EPollItem, EventPoll};
 use crate::perf::bpf::BpfPerfEvent;
 use crate::perf::util::{PerfEventIoc, PerfEventOpenFlags, PerfProbeArgs};
 use crate::process::ProcessManager;

kernel/src/syscall/mod.rs

@@ -4,7 +4,7 @@ use core::{
 };
 
 use crate::{
-    arch::{ipc::signal::SigSet, syscall::nr::*},
+    arch::syscall::nr::*,
     filesystem::vfs::syscall::PosixStatfs,
     ipc::shm::{ShmCtlCmd, ShmFlags, ShmId, ShmKey},
     libs::{futex::constant::FutexFlag, rand::GRandFlags},
@@ -762,48 +762,6 @@ impl Syscall {
                 args[4],
             ),
 
-            #[cfg(target_arch = "x86_64")]
-            SYS_EPOLL_CREATE => Self::epoll_create(args[0] as i32),
-            SYS_EPOLL_CREATE1 => Self::epoll_create1(args[0]),
-
-            SYS_EPOLL_CTL => Self::epoll_ctl(
-                args[0] as i32,
-                args[1],
-                args[2] as i32,
-                VirtAddr::new(args[3]),
-            ),
-
-            #[cfg(target_arch = "x86_64")]
-            SYS_EPOLL_WAIT => Self::epoll_wait(
-                args[0] as i32,
-                VirtAddr::new(args[1]),
-                args[2] as i32,
-                args[3] as i32,
-            ),
-
-            SYS_EPOLL_PWAIT => {
-                let epfd = args[0] as i32;
-                let epoll_event = VirtAddr::new(args[1]);
-                let max_events = args[2] as i32;
-                let timespec = args[3] as i32;
-                let sigmask_addr = args[4] as *mut SigSet;
-
-                if sigmask_addr.is_null() {
-                    return Self::epoll_wait(epfd, epoll_event, max_events, timespec);
-                }
-                let sigmask_reader =
-                    UserBufferReader::new(sigmask_addr, core::mem::size_of::<SigSet>(), true)?;
-                let mut sigmask = *sigmask_reader.read_one_from_user::<SigSet>(0)?;
-
-                Self::epoll_pwait(
-                    args[0] as i32,
-                    VirtAddr::new(args[1]),
-                    args[2] as i32,
-                    args[3] as i32,
-                    &mut sigmask,
-                )
-            }
-
             // 目前为了适配musl-libc,以下系统调用先这样写着
             SYS_GETRANDOM => {
                 let flags = GRandFlags::from_bits(args[2] as u8).ok_or(SystemError::EINVAL)?;