forked from AbleOS/ableos
Ext2: find_dir implementation
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e21b34a3e7
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@ -10,6 +10,7 @@ pub enum FsError {
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InvalidDevice,
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IsDirectory,
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NotADirectory,
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NotFound,
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UnsupportedOperation,
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}
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@ -31,7 +32,7 @@ impl Into<FsError> for ext2::error::Error {
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ext2::error::Error::InodeNotFound { inode: _ } => FsError::InodeNotFound,
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ext2::error::Error::NotADirectory { inode: _, name: _ } => FsError::NotADirectory,
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ext2::error::Error::NotAbsolute { name: _ } => todo!(),
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ext2::error::Error::NotFound { name: _ } => todo!(),
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ext2::error::Error::NotFound { name: _ } => FsError::NotFound,
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}
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}
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}
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@ -4,12 +4,16 @@
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* SPDX-License-Identifier: MPL-2.0
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*/
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use alloc::sync::Weak;
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use ext2::fs::{sync::Synced, Ext2};
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use ext2::sector::SectorSize;
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use ext2::sys::inode::TypePerm;
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use ext2::volume::Volume;
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use crate::handle::Handle;
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use super::errors::FsError;
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use super::{DirectoryEntry, FsNode, FsResult as Result, StorageDevice};
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use super::{DirectoryEntry, FsFlags, FsNode, FsResult as Result, StorageDevice};
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pub struct Ext2StorageDevice<S, V>
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where
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@ -17,6 +21,7 @@ where
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V: Volume<u8, S>,
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{
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fs: Synced<Ext2<S, V>>,
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device_handle: Handle,
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}
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impl<S, V> Ext2StorageDevice<S, V>
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@ -24,9 +29,10 @@ where
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S: SectorSize,
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V: Volume<u8, S>,
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{
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pub fn new(volume: V) -> Result<Self> {
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pub fn new(volume: V, device_handle: Handle) -> Result<Self> {
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Ok(Self {
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fs: Synced::new(volume).map_err(|e| e.into())?,
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device_handle,
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})
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}
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}
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@ -63,18 +69,64 @@ where
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.inode_nth(node.inode as usize)
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.ok_or_else(|| FsError::InodeNotFound)?;
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let mut dir = inode.directory().ok_or_else(|| FsError::NotADirectory)?;
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let entry = dir.nth(index)
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let entry = dir
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.nth(index)
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.ok_or_else(|| FsError::InodeNotFound)?
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.map_err(|e| e.into())?;
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Ok(DirectoryEntry::new(entry.file_name_string(), entry.inode))
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}
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fn find_dir(&self, _node: &FsNode, _name: &str) -> Result<FsNode> {
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todo!()
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fn find_dir(&self, node: &FsNode, name: &str) -> Result<FsNode> {
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let inode = self
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.fs
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.inode_nth(node.inode as usize)
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.ok_or_else(|| FsError::InodeNotFound)?;
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let dir = inode.directory().ok_or_else(|| FsError::NotADirectory)?;
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let mut found_node = Err(FsError::NotFound);
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for entry in dir {
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if entry.is_err() {
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continue;
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}
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let entry = entry.unwrap();
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if entry.file_name_string() == name {
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let inode = self
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.fs
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.inode_nth(entry.inode as usize)
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.ok_or_else(|| FsError::InodeNotFound)?;
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let flags = ext2_type_to_fs_flags(inode.type_perm());
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found_node = Ok(FsNode::new(
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flags,
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inode.size(),
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entry.inode,
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self.device_handle,
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Weak::new(),
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))
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}
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}
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found_node
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}
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}
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fn ext2_type_to_fs_flags(type_perm: TypePerm) -> FsFlags {
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let is_directory = type_perm & TypePerm::DIRECTORY == TypePerm::DIRECTORY;
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let is_symlink = type_perm & TypePerm::SYMLINK == TypePerm::SYMLINK;
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let t = if is_directory {
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FsFlags::DIRECTORY
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} else {
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FsFlags::FILE
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};
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let s = if is_symlink {
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FsFlags::SYMBOLIC_LINK
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} else {
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FsFlags::empty()
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};
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t | s
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}
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// fn load_fs() -> Arc<Mutex<Ext2<Size1024, Vec<u8>>>> {
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// let mut volume = Vec::new();
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// volume.extend_from_slice(include_bytes!("../../../userland/root_fs/ext2.img"));
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@ -9,7 +9,7 @@ pub mod ext2;
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use core::cmp;
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use alloc::sync::{Weak, Arc};
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use alloc::sync::{Arc, Weak};
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use bitflags::bitflags;
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use crate::{handle::Handle, KERNEL_STATE};
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@ -140,9 +140,9 @@ impl Drop for FsNode {
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bitflags! {
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/// Flags associated with VFS nodes and file descriptors
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///
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/// 0x00000MST
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/// T is set to 0 for files, 1 for directories
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/// S is set when the file is a symbolic link
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/// 0x00000MST \
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/// T is set to 0 for files, 1 for directories \
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/// S is set when the file is a symbolic link \
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/// M is set if the file is an active mount point
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pub struct FsFlags: u8 {
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const FILE = 0b00000000;
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@ -159,9 +159,6 @@ pub struct DirectoryEntry {
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impl DirectoryEntry {
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fn new(name: String, inode: usize) -> Self {
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Self {
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name,
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inode,
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}
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Self { name, inode }
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}
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}
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@ -3,7 +3,7 @@ use hashbrown::HashMap;
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use spin::Lazy;
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use crate::{
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filesystem::{StorageDevice, FsNode},
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filesystem::{FsNode, StorageDevice},
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handle::{Handle, HandleResource},
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};
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@ -81,8 +81,6 @@ pub struct FileTableEntry {
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impl FileTableEntry {
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fn new(fs_node: Arc<FsNode>) -> Self {
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Self {
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fs_node
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}
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Self { fs_node }
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}
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}
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@ -1,5 +1,7 @@
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//!
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use crate::sys::inode::TypePerm;
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use {
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super::Ext2,
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alloc::{
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@ -543,6 +545,11 @@ impl<S: SectorSize, V: Volume<u8, S>> Inode<S, V> {
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pub fn size(&self) -> usize {
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self.size32() as usize
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}
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/// ableOS: expose type_perm
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pub fn type_perm(&self) -> TypePerm {
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self.inner.type_perm
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}
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}
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impl<S: SectorSize, V: Volume<u8, S>> File for Inode<S, V> {
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