1*b087521eSChiichen use crate::driver::base::block::block_device::BlockDevice; 2004e86ffSlogin use crate::filesystem::devfs::{DevFS, DeviceINode}; 30d48c3c9Slogin use crate::filesystem::vfs::file::FileMode; 4004e86ffSlogin use crate::filesystem::vfs::{ 5004e86ffSlogin core::generate_inode_id, make_rawdev, FilePrivateData, FileSystem, FileType, IndexNode, 6004e86ffSlogin Metadata, PollStatus, 7004e86ffSlogin }; 8676b8ef6SMork use crate::syscall::SystemError; 978bf93f0SYJwu2023 use crate::{libs::spinlock::SpinLock, time::TimeSpec}; 10004e86ffSlogin use alloc::{ 11004e86ffSlogin string::String, 12004e86ffSlogin sync::{Arc, Weak}, 13004e86ffSlogin vec::Vec, 14004e86ffSlogin }; 15004e86ffSlogin 16004e86ffSlogin use super::ahcidisk::LockedAhciDisk; 17004e86ffSlogin 18004e86ffSlogin #[derive(Debug)] 19004e86ffSlogin pub struct AhciInode { 20004e86ffSlogin /// uuid 暂时不知道有什么用(x 21004e86ffSlogin // uuid: Uuid, 22004e86ffSlogin /// 指向自身的弱引用 23004e86ffSlogin self_ref: Weak<LockedAhciInode>, 24004e86ffSlogin /// 指向inode所在的文件系统对象的指针 25004e86ffSlogin fs: Weak<DevFS>, 26004e86ffSlogin /// INode 元数据 27004e86ffSlogin metadata: Metadata, 28004e86ffSlogin /// INode 对应的磁盘 29004e86ffSlogin disk: Arc<LockedAhciDisk>, 30004e86ffSlogin } 31004e86ffSlogin 32004e86ffSlogin #[derive(Debug)] 33004e86ffSlogin pub struct LockedAhciInode(pub SpinLock<AhciInode>); 34004e86ffSlogin 35004e86ffSlogin impl LockedAhciInode { 36004e86ffSlogin pub fn new(disk: Arc<LockedAhciDisk>) -> Arc<Self> { 37004e86ffSlogin let inode = AhciInode { 38004e86ffSlogin // uuid: Uuid::new_v5(), 39004e86ffSlogin self_ref: Weak::default(), 40004e86ffSlogin fs: Weak::default(), 41004e86ffSlogin disk: disk, 42004e86ffSlogin metadata: Metadata { 43004e86ffSlogin dev_id: 1, 44004e86ffSlogin inode_id: generate_inode_id(), 45004e86ffSlogin size: 0, 46004e86ffSlogin blk_size: 0, 47004e86ffSlogin blocks: 0, 48004e86ffSlogin atime: TimeSpec::default(), 49004e86ffSlogin mtime: TimeSpec::default(), 50004e86ffSlogin ctime: TimeSpec::default(), 51004e86ffSlogin file_type: FileType::BlockDevice, // 文件夹,block设备,char设备 52004e86ffSlogin mode: 0o666, 53004e86ffSlogin nlinks: 1, 54004e86ffSlogin uid: 0, 55004e86ffSlogin gid: 0, 56004e86ffSlogin raw_dev: make_rawdev(1, 3), // 这里用来作为device number 57004e86ffSlogin }, 58004e86ffSlogin }; 59004e86ffSlogin 60004e86ffSlogin let result = Arc::new(LockedAhciInode(SpinLock::new(inode))); 61004e86ffSlogin result.0.lock().self_ref = Arc::downgrade(&result); 62004e86ffSlogin 63004e86ffSlogin return result; 64004e86ffSlogin } 65004e86ffSlogin } 66004e86ffSlogin 67004e86ffSlogin impl DeviceINode for LockedAhciInode { 68004e86ffSlogin fn set_fs(&self, fs: Weak<DevFS>) { 69004e86ffSlogin self.0.lock().fs = fs; 70004e86ffSlogin } 71004e86ffSlogin } 72004e86ffSlogin 73004e86ffSlogin impl IndexNode for LockedAhciInode { 74004e86ffSlogin fn as_any_ref(&self) -> &dyn core::any::Any { 75004e86ffSlogin self 76004e86ffSlogin } 77004e86ffSlogin 78676b8ef6SMork fn open(&self, _data: &mut FilePrivateData, _mode: &FileMode) -> Result<(), SystemError> { 7979a452ceShoumkh Err(SystemError::EOPNOTSUPP_OR_ENOTSUP) 80004e86ffSlogin } 81004e86ffSlogin 82676b8ef6SMork fn close(&self, _data: &mut FilePrivateData) -> Result<(), SystemError> { 8379a452ceShoumkh Err(SystemError::EOPNOTSUPP_OR_ENOTSUP) 84004e86ffSlogin } 85004e86ffSlogin 86676b8ef6SMork fn metadata(&self) -> Result<Metadata, SystemError> { 87004e86ffSlogin return Ok(self.0.lock().metadata.clone()); 88004e86ffSlogin } 89004e86ffSlogin 90004e86ffSlogin fn fs(&self) -> Arc<dyn FileSystem> { 91004e86ffSlogin return self.0.lock().fs.upgrade().unwrap(); 92004e86ffSlogin } 93004e86ffSlogin 94676b8ef6SMork fn list(&self) -> Result<Vec<String>, SystemError> { 9579a452ceShoumkh Err(SystemError::EOPNOTSUPP_OR_ENOTSUP) 96004e86ffSlogin } 97004e86ffSlogin 98676b8ef6SMork fn set_metadata(&self, metadata: &Metadata) -> Result<(), SystemError> { 99004e86ffSlogin let mut inode = self.0.lock(); 100004e86ffSlogin inode.metadata.atime = metadata.atime; 101004e86ffSlogin inode.metadata.mtime = metadata.mtime; 102004e86ffSlogin inode.metadata.ctime = metadata.ctime; 103004e86ffSlogin inode.metadata.mode = metadata.mode; 104004e86ffSlogin inode.metadata.uid = metadata.uid; 105004e86ffSlogin inode.metadata.gid = metadata.gid; 106004e86ffSlogin 107004e86ffSlogin return Ok(()); 108004e86ffSlogin } 109004e86ffSlogin 110676b8ef6SMork fn poll(&self) -> Result<PollStatus, SystemError> { 111cde5492fSlogin return Ok(PollStatus::READ | PollStatus::WRITE); 112004e86ffSlogin } 113004e86ffSlogin 114004e86ffSlogin /// 读设备 - 应该调用设备的函数读写,而不是通过文件系统读写 115004e86ffSlogin fn read_at( 116004e86ffSlogin &self, 117004e86ffSlogin offset: usize, // lba地址 118004e86ffSlogin len: usize, 119004e86ffSlogin buf: &mut [u8], 120004e86ffSlogin data: &mut FilePrivateData, 121676b8ef6SMork ) -> Result<usize, SystemError> { 122004e86ffSlogin if buf.len() < len { 123676b8ef6SMork return Err(SystemError::EINVAL); 124004e86ffSlogin } 125004e86ffSlogin 126004e86ffSlogin if let FilePrivateData::Unused = data { 127*b087521eSChiichen return self.0.lock().disk.read_at_bytes(offset, len, buf); 128004e86ffSlogin } 129004e86ffSlogin 130676b8ef6SMork return Err(SystemError::EINVAL); 131004e86ffSlogin } 132004e86ffSlogin 133004e86ffSlogin /// 写设备 - 应该调用设备的函数读写,而不是通过文件系统读写 134004e86ffSlogin fn write_at( 135004e86ffSlogin &self, 136004e86ffSlogin offset: usize, // lba地址 137004e86ffSlogin len: usize, 138004e86ffSlogin buf: &[u8], 139004e86ffSlogin data: &mut FilePrivateData, 140676b8ef6SMork ) -> Result<usize, SystemError> { 141004e86ffSlogin if buf.len() < len { 142676b8ef6SMork return Err(SystemError::EINVAL); 143004e86ffSlogin } 144004e86ffSlogin 145004e86ffSlogin if let FilePrivateData::Unused = data { 146*b087521eSChiichen return self.0.lock().disk.write_at_bytes(offset, len, buf); 147004e86ffSlogin } 148004e86ffSlogin 149676b8ef6SMork return Err(SystemError::EINVAL); 150004e86ffSlogin } 151004e86ffSlogin } 152