add explicit 'dyn'

rcore-fs-ext2/src/lib.rs

@@ -23,7 +23,7 @@ use rcore_fs::vfs;
 
 #[derive(Clone)]
 struct Ext2Volume {
-    inner: Arc<Device>,
+    inner: Arc<dyn Device>,
 }
 
 #[derive(Clone)]
@@ -67,11 +67,11 @@ impl core::convert::From<DevError> for Ext2Error {
 }
 
 impl Ext2FileSystem {
-    pub fn open(device: Arc<Device>) -> vfs::Result<Arc<Self>> {
+    pub fn open(device: Arc<dyn Device>) -> vfs::Result<Arc<Self>> {
         Ok(Self::open_internal(device)?)
     }
 
-    fn open_internal(device: Arc<Device>) -> Result<Arc<Self>, Ext2Error> {
+    fn open_internal(device: Arc<dyn Device>) -> Result<Arc<Self>, Ext2Error> {
         let volume = Ext2Volume { inner: device };
         let fs = Synced::new(volume.clone())?;
         Ok(Arc::new(Ext2FileSystem { inner: fs, volume }))

rcore-fs-fuse/src/main.rs

@@ -9,9 +9,9 @@ use rcore_fs::vfs::FileSystem;
 #[cfg(feature = "use_fuse")]
 use rcore_fs_fuse::fuse::VfsFuse;
 use rcore_fs_fuse::zip::{unzip_dir, zip_dir};
+use rcore_fs_ramfs as ramfs;
 use rcore_fs_sefs as sefs;
 use rcore_fs_sfs as sfs;
-use rcore_fs_ramfs as ramfs;
 
 use git_version::git_version;
 
@@ -69,7 +69,7 @@ fn main() {
         }
     };
 
-    let fs: Arc<FileSystem> = match opt.fs.as_str() {
+    let fs: Arc<dyn FileSystem> = match opt.fs.as_str() {
         "sfs" => {
             let file = OpenOptions::new()
                 .read(true)
@@ -96,9 +96,7 @@ fn main() {
                     .expect("failed to open sefs"),
             }
         }
-        "ramfs" => {
-            ramfs::RamFS::new()
-        }
+        "ramfs" => ramfs::RamFS::new(),
         _ => panic!("unsupported file system"),
     };
     match opt.cmd {

rcore-fs-fuse/src/zip.rs

@@ -12,7 +12,7 @@ use rcore_fs::vfs::{FileType, INode};
 const DEFAULT_MODE: u32 = 0o664;
 const BUF_SIZE: usize = 0x1000;
 
-pub fn zip_dir(path: &Path, inode: Arc<INode>) -> Result<(), Box<Error>> {
+pub fn zip_dir(path: &Path, inode: Arc<dyn INode>) -> Result<(), Box<dyn Error>> {
     let dir = fs::read_dir(path)?;
     for entry in dir {
         let entry = entry?;
@@ -45,7 +45,7 @@ pub fn zip_dir(path: &Path, inode: Arc<INode>) -> Result<(), Box<Error>> {
     Ok(())
 }
 
-pub fn unzip_dir(path: &Path, inode: Arc<INode>) -> Result<(), Box<Error>> {
+pub fn unzip_dir(path: &Path, inode: Arc<dyn INode>) -> Result<(), Box<dyn Error>> {
     let files = inode.list()?;
     for name in files.iter().skip(2) {
         let inode = inode.lookup(name.as_str())?;

rcore-fs-sefs/src/dev/mod.rs

@@ -36,8 +36,8 @@ pub trait File: Send + Sync {
 
 /// The collection of all files in the FS.
 pub trait Storage: Send + Sync {
-    fn open(&self, file_id: usize) -> DevResult<Box<File>>;
-    fn create(&self, file_id: usize) -> DevResult<Box<File>>;
+    fn open(&self, file_id: usize) -> DevResult<Box<dyn File>>;
+    fn create(&self, file_id: usize) -> DevResult<Box<dyn File>>;
     fn remove(&self, file_id: usize) -> DevResult<()>;
 }
 

rcore-fs-sefs/src/dev/std_impl.rs

@@ -20,14 +20,14 @@ impl StdStorage {
 }
 
 impl super::Storage for StdStorage {
-    fn open(&self, file_id: usize) -> DevResult<Box<super::File>> {
+    fn open(&self, file_id: usize) -> DevResult<Box<dyn super::File>> {
         let mut path = self.path.to_path_buf();
         path.push(format!("{}", file_id));
         let file = OpenOptions::new().read(true).write(true).open(path)?;
         Ok(Box::new(Mutex::new(file)))
     }
 
-    fn create(&self, file_id: usize) -> DevResult<Box<super::File>> {
+    fn create(&self, file_id: usize) -> DevResult<Box<dyn super::File>> {
         let mut path = self.path.to_path_buf();
         path.push(format!("{}", file_id));
         let file = OpenOptions::new()

rcore-fs-sefs/src/lib.rs

@@ -28,7 +28,7 @@ pub mod dev;
 mod structs;
 
 /// Helper methods for `File`
-impl File {
+impl dyn File {
     fn read_block(&self, id: BlockId, buf: &mut [u8]) -> DevResult<()> {
         assert!(buf.len() <= BLKSIZE);
         self.read_exact_at(buf, id * BLKSIZE)
@@ -60,7 +60,7 @@ pub struct INodeImpl {
     /// on-disk inode
     disk_inode: RwLock<Dirty<DiskINode>>,
     /// back file
-    file: Box<File>,
+    file: Box<dyn File>,
     /// Reference to FS
     fs: Arc<SEFS>,
 }
@@ -232,7 +232,12 @@ impl vfs::INode for INodeImpl {
         self.disk_inode.write().size = len as u32;
         Ok(())
     }
-    fn create(&self, name: &str, type_: vfs::FileType, mode: u32) -> vfs::Result<Arc<vfs::INode>> {
+    fn create(
+        &self,
+        name: &str,
+        type_: vfs::FileType,
+        mode: u32,
+    ) -> vfs::Result<Arc<dyn vfs::INode>> {
         let type_ = match type_ {
             vfs::FileType::File => FileType::File,
             vfs::FileType::Dir => FileType::Dir,
@@ -309,7 +314,7 @@ impl vfs::INode for INodeImpl {
 
         Ok(())
     }
-    fn link(&self, name: &str, other: &Arc<INode>) -> vfs::Result<()> {
+    fn link(&self, name: &str, other: &Arc<dyn INode>) -> vfs::Result<()> {
         let info = self.metadata()?;
         if info.type_ != vfs::FileType::Dir {
             return Err(FsError::NotDir);
@@ -337,7 +342,7 @@ impl vfs::INode for INodeImpl {
         child.nlinks_inc();
         Ok(())
     }
-    fn move_(&self, old_name: &str, target: &Arc<INode>, new_name: &str) -> vfs::Result<()> {
+    fn move_(&self, old_name: &str, target: &Arc<dyn INode>, new_name: &str) -> vfs::Result<()> {
         let info = self.metadata()?;
         if info.type_ != vfs::FileType::Dir {
             return Err(FsError::NotDir);
@@ -398,7 +403,7 @@ impl vfs::INode for INodeImpl {
 
         Ok(())
     }
-    fn find(&self, name: &str) -> vfs::Result<Arc<vfs::INode>> {
+    fn find(&self, name: &str) -> vfs::Result<Arc<dyn vfs::INode>> {
         let info = self.metadata()?;
         if info.type_ != vfs::FileType::Dir {
             return Err(FsError::NotDir);
@@ -419,10 +424,10 @@ impl vfs::INode for INodeImpl {
     fn io_control(&self, _cmd: u32, _data: usize) -> vfs::Result<()> {
         Err(FsError::NotSupported)
     }
-    fn fs(&self) -> Arc<vfs::FileSystem> {
+    fn fs(&self) -> Arc<dyn vfs::FileSystem> {
         self.fs.clone()
     }
-    fn as_any_ref(&self) -> &Any {
+    fn as_any_ref(&self) -> &dyn Any {
         self
     }
 }
@@ -449,11 +454,11 @@ pub struct SEFS {
     /// inode list
     inodes: RwLock<BTreeMap<INodeId, Weak<INodeImpl>>>,
     /// device
-    device: Box<Storage>,
+    device: Box<dyn Storage>,
     /// metadata file
-    meta_file: Box<File>,
+    meta_file: Box<dyn File>,
     /// Time provider
-    time_provider: &'static TimeProvider,
+    time_provider: &'static dyn TimeProvider,
     /// Pointer to self, used by INodes
     self_ptr: Weak<SEFS>,
 }
@@ -461,8 +466,8 @@ pub struct SEFS {
 impl SEFS {
     /// Load SEFS
     pub fn open(
-        device: Box<Storage>,
-        time_provider: &'static TimeProvider,
+        device: Box<dyn Storage>,
+        time_provider: &'static dyn TimeProvider,
     ) -> vfs::Result<Arc<Self>> {
         let meta_file = device.open(0)?;
         let super_block = meta_file.load_struct::<SuperBlock>(BLKN_SUPER)?;
@@ -496,8 +501,8 @@ impl SEFS {
     }
     /// Create a new SEFS
     pub fn create(
-        device: Box<Storage>,
-        time_provider: &'static TimeProvider,
+        device: Box<dyn Storage>,
+        time_provider: &'static dyn TimeProvider,
     ) -> vfs::Result<Arc<Self>> {
         let blocks = BLKBITS;
 
@@ -683,7 +688,7 @@ impl vfs::FileSystem for SEFS {
         Ok(())
     }
 
-    fn root_inode(&self) -> Arc<vfs::INode> {
+    fn root_inode(&self) -> Arc<dyn vfs::INode> {
         self.get_inode(BLKN_ROOT)
     }
 

rcore-fs-sfs/src/lib.rs

@@ -7,7 +7,6 @@ extern crate alloc;
 extern crate log;
 
 use alloc::{
-    boxed::Box,
     collections::BTreeMap,
     string::String,
     sync::{Arc, Weak},
@@ -19,7 +18,7 @@ use core::fmt::{Debug, Error, Formatter};
 use core::mem::uninitialized;
 
 use bitvec::BitVec;
-use spin::{RwLock, RwLockReadGuard, RwLockWriteGuard};
+use spin::RwLock;
 
 use rcore_fs::dev::Device;
 use rcore_fs::dirty::Dirty;
@@ -55,7 +54,7 @@ trait DeviceExt: Device {
     }
 }
 
-impl DeviceExt for Device {}
+impl DeviceExt for dyn Device {}
 
 /// INode for SFS
 pub struct INodeImpl {
@@ -322,7 +321,7 @@ impl INodeImpl {
     /// Read/Write content, no matter what type it is
     fn _io_at<F>(&self, begin: usize, end: usize, mut f: F) -> vfs::Result<usize>
     where
-        F: FnMut(&Arc<Device>, &BlockRange, usize) -> vfs::Result<()>,
+        F: FnMut(&Arc<dyn Device>, &BlockRange, usize) -> vfs::Result<()>,
     {
         let size = self.disk_inode.read().size as usize;
         let iter = BlockIter {
@@ -394,7 +393,7 @@ impl INodeImpl {
             id: child.id as u32,
             name: Str256::from(name),
         };
-        let mut disk_inode = self.disk_inode.write();
+        let disk_inode = self.disk_inode.write();
         let old_size = disk_inode.size as usize;
         self._resize(old_size + BLKSIZE)?;
         self._write_at(old_size, entry.as_buf()).unwrap();
@@ -498,7 +497,13 @@ impl vfs::INode for INodeImpl {
         }
         self._resize(len)
     }
-    fn create2(&self, name: &str, type_: vfs::FileType, _mode: u32, data: usize)->vfs::Result<Arc<vfs::INode>>{
+    fn create2(
+        &self,
+        name: &str,
+        type_: vfs::FileType,
+        _mode: u32,
+        data: usize,
+    ) -> vfs::Result<Arc<dyn vfs::INode>> {
         let info = self.metadata()?;
         if info.type_ != vfs::FileType::Dir {
             return Err(FsError::NotDir);
@@ -535,7 +540,7 @@ impl vfs::INode for INodeImpl {
         Ok(inode)
     }
 
-    fn link(&self, name: &str, other: &Arc<INode>) -> vfs::Result<()> {
+    fn link(&self, name: &str, other: &Arc<dyn INode>) -> vfs::Result<()> {
         let info = self.metadata()?;
         if info.type_ != vfs::FileType::Dir {
             return Err(FsError::NotDir);
@@ -598,7 +603,7 @@ impl vfs::INode for INodeImpl {
 
         Ok(())
     }
-    fn move_(&self, old_name: &str, target: &Arc<INode>, new_name: &str) -> vfs::Result<()> {
+    fn move_(&self, old_name: &str, target: &Arc<dyn INode>, new_name: &str) -> vfs::Result<()> {
         let info = self.metadata()?;
         if info.type_ != vfs::FileType::Dir {
             return Err(FsError::NotDir);
@@ -658,7 +663,7 @@ impl vfs::INode for INodeImpl {
         }
         Ok(())
     }
-    fn find(&self, name: &str) -> vfs::Result<Arc<vfs::INode>> {
+    fn find(&self, name: &str) -> vfs::Result<Arc<dyn vfs::INode>> {
         let info = self.metadata()?;
         if info.type_ != vfs::FileType::Dir {
             return Err(FsError::NotDir);
@@ -690,10 +695,10 @@ impl vfs::INode for INodeImpl {
             }
         }
     }
-    fn fs(&self) -> Arc<vfs::FileSystem> {
+    fn fs(&self) -> Arc<dyn vfs::FileSystem> {
         self.fs.clone()
     }
-    fn as_any_ref(&self) -> &Any {
+    fn as_any_ref(&self) -> &dyn Any {
         self
     }
 }
@@ -725,7 +730,7 @@ pub struct SimpleFileSystem {
     /// inode list
     inodes: RwLock<BTreeMap<INodeId, Weak<INodeImpl>>>,
     /// device
-    device: Arc<Device>,
+    device: Arc<dyn Device>,
     /// Pointer to self, used by INodes
     self_ptr: Weak<SimpleFileSystem>,
     /// device inode
@@ -734,7 +739,7 @@ pub struct SimpleFileSystem {
 
 impl SimpleFileSystem {
     /// Load SFS from device
-    pub fn open(device: Arc<Device>) -> vfs::Result<Arc<Self>> {
+    pub fn open(device: Arc<dyn Device>) -> vfs::Result<Arc<Self>> {
         let super_block = device.load_struct::<SuperBlock>(BLKN_SUPER)?;
         if !super_block.check() {
             return Err(FsError::WrongFs);
@@ -759,7 +764,7 @@ impl SimpleFileSystem {
         .wrap())
     }
     /// Create a new SFS on blank disk
-    pub fn create(device: Arc<Device>, space: usize) -> vfs::Result<Arc<Self>> {
+    pub fn create(device: Arc<dyn Device>, space: usize) -> vfs::Result<Arc<Self>> {
         let blocks = (space + BLKSIZE - 1) / BLKSIZE;
         let freemap_blocks = (space + BLKBITS * BLKSIZE - 1) / BLKBITS / BLKSIZE;
         assert!(blocks >= 16, "space too small");
@@ -945,7 +950,7 @@ impl vfs::FileSystem for SimpleFileSystem {
         Ok(())
     }
 
-    fn root_inode(&self) -> Arc<vfs::INode> {
+    fn root_inode(&self) -> Arc<dyn vfs::INode> {
         self.get_inode(BLKN_ROOT)
         // let root = self.get_inode(BLKN_ROOT);
         // root.create("dev", vfs::FileType::Dir, 0).expect("fail to create dev"); // what's mode?

rcore-fs-sfs/src/structs.rs

@@ -2,7 +2,7 @@
 
 use crate::vfs;
 use alloc::str;
-use core::any::Any;
+
 use core::fmt::{Debug, Error, Formatter};
 use core::mem::{size_of, size_of_val};
 use core::slice;
@@ -55,7 +55,7 @@ pub trait DeviceINode : Any + Sync + Send{
 }
 */
 
-pub type DeviceINode = vfs::INode;
+pub type DeviceINode = dyn vfs::INode;
 
 #[repr(C)]
 pub struct IndirectBlock {

rcore-fs/src/file.rs

@@ -2,14 +2,14 @@ use crate::vfs::{INode, Metadata, Result};
 use alloc::{string::String, sync::Arc};
 
 pub struct File {
-    inode: Arc<INode>,
+    inode: Arc<dyn INode>,
     offset: usize,
     readable: bool,
     writable: bool,
 }
 
 impl File {
-    pub fn new(inode: Arc<INode>, readable: bool, writable: bool) -> Self {
+    pub fn new(inode: Arc<dyn INode>, readable: bool, writable: bool) -> Self {
         File {
             inode,
             offset: 0,

rcore-fs/src/vfs.rs

@@ -32,27 +32,33 @@ pub trait INode: Any + Sync + Send {
     fn resize(&self, len: usize) -> Result<()>;
 
     /// Create a new INode in the directory
-    fn create(&self, name: &str, type_: FileType, mode: u32) -> Result<Arc<INode>>{
+    fn create(&self, name: &str, type_: FileType, mode: u32) -> Result<Arc<dyn INode>> {
         self.create2(name, type_, mode, 0)
     }
 
     /// Create a new INode in the directory, with a data field for usages like device file.
-    fn create2(&self, name: &str, type_: FileType, mode: u32, data: usize) -> Result<Arc<INode>>{
+    fn create2(
+        &self,
+        name: &str,
+        type_: FileType,
+        mode: u32,
+        _data: usize,
+    ) -> Result<Arc<dyn INode>> {
         self.create(name, type_, mode)
     }
 
     /// Create a hard link `name` to `other`
-    fn link(&self, name: &str, other: &Arc<INode>) -> Result<()>;
+    fn link(&self, name: &str, other: &Arc<dyn INode>) -> Result<()>;
 
     /// Delete a hard link `name`
     fn unlink(&self, name: &str) -> Result<()>;
 
     /// Move INode `self/old_name` to `target/new_name`.
     /// If `target` equals `self`, do rename.
-    fn move_(&self, old_name: &str, target: &Arc<INode>, new_name: &str) -> Result<()>;
+    fn move_(&self, old_name: &str, target: &Arc<dyn INode>, new_name: &str) -> Result<()>;
 
     /// Find the INode `name` in the directory
-    fn find(&self, name: &str) -> Result<Arc<INode>>;
+    fn find(&self, name: &str) -> Result<Arc<dyn INode>>;
 
     /// Get the name of directory entry
     fn get_entry(&self, id: usize) -> Result<String>;
@@ -61,14 +67,14 @@ pub trait INode: Any + Sync + Send {
     fn io_control(&self, cmd: u32, data: usize) -> Result<()>;
 
     /// Get the file system of the INode
-    fn fs(&self) -> Arc<FileSystem>;
+    fn fs(&self) -> Arc<dyn FileSystem>;
 
     /// This is used to implement dynamics cast.
     /// Simply return self in the implement of the function.
-    fn as_any_ref(&self) -> &Any;
+    fn as_any_ref(&self) -> &dyn Any;
 }
 
-impl INode {
+impl dyn INode {
     /// Downcast the INode to specific struct
     pub fn downcast_ref<T: INode>(&self) -> Option<&T> {
         self.as_any_ref().downcast_ref::<T>()
@@ -88,12 +94,12 @@ impl INode {
     }
 
     /// Lookup path from current INode, and do not follow symlinks
-    pub fn lookup(&self, path: &str) -> Result<Arc<INode>> {
+    pub fn lookup(&self, path: &str) -> Result<Arc<dyn INode>> {
         self.lookup_follow(path, 0)
     }
 
     /// Lookup path from current INode, and follow symlinks at most `follow_times` times
-    pub fn lookup_follow(&self, path: &str, mut follow_times: usize) -> Result<Arc<INode>> {
+    pub fn lookup_follow(&self, path: &str, mut follow_times: usize) -> Result<Arc<dyn INode>> {
         if self.metadata()?.type_ != FileType::Dir {
             return Err(FsError::NotDir);
         }
@@ -285,12 +291,12 @@ impl std::error::Error for FsError {}
 pub type Result<T> = result::Result<T, FsError>;
 
 /// Abstract file system
-pub trait FileSystem: Sync+Send {
+pub trait FileSystem: Sync + Send {
     /// Sync all data to the storage
     fn sync(&self) -> Result<()>;
 
     /// Get the root INode of the file system
-    fn root_inode(&self) -> Arc<INode>;
+    fn root_inode(&self) -> Arc<dyn INode>;
 
     /// Get the file system information
     fn info(&self) -> FsInfo;