fix get_entry

rcore-fs-fuse/src/fuse.rs

@@ -47,7 +47,7 @@ impl VfsFuse {
             perm: info.mode,
             nlink: info.nlinks as u32,
             uid: 501, // info.uid as u32,
-            gid: 20, // info.gid as u32,
+            gid: 20,  // info.gid as u32,
             rdev: 0,
             flags: 0,
         }
@@ -294,10 +294,12 @@ impl Filesystem for VfsFuse {
         mut reply: ReplyDirectory,
     ) {
         let inode = try_vfs!(reply, self.get_inode(ino));
-        let info = try_vfs!(reply, inode.metadata());
-        let count = info.size;
-        for i in offset as usize..count {
-            let name = inode.get_entry(i).unwrap();
+        for i in offset as usize.. {
+            let name = match inode.get_entry(i) {
+                Ok(name) => name,
+                Err(vfs::FsError::EntryNotFound) => break,
+                e @ _ => try_vfs!(reply, e),
+            };
             let inode = try_vfs!(reply, inode.find(name.as_str()));
             let info = try_vfs!(reply, inode.metadata());
             let kind = Self::trans_type(info.type_);

rcore-fs/src/vfs.rs

@@ -1,9 +1,9 @@
+use crate::dev::DevError;
 use alloc::{string::String, sync::Arc, vec::Vec};
 use core::any::Any;
 use core::fmt;
 use core::result;
 use core::str;
-use crate::dev::DevError;
 
 /// Abstract file system object such as file or directory.
 pub trait INode: Any + Sync + Send {
@@ -73,7 +73,11 @@ impl INode {
         if info.type_ != FileType::Dir {
             return Err(FsError::NotDir);
         }
-        (0..info.size).map(|i| self.get_entry(i)).collect()
+        Ok((0..)
+            .map(|i| self.get_entry(i))
+            .take_while(|result| result.is_ok())
+            .filter_map(|result| result.ok())
+            .collect())
     }
 
     /// Lookup path from current INode, and do not follow symlinks
@@ -116,8 +120,7 @@ impl INode {
                 follow_times -= 1;
                 let mut content = [0u8; 256];
                 let len = inode.read_at(0, &mut content)?;
-                let path = str::from_utf8(&content[..len])
-                    .map_err(|_| FsError::NotDir)?;
+                let path = str::from_utf8(&content[..len]).map_err(|_| FsError::NotDir)?;
                 // result remains unchanged
                 rest_path = {
                     let mut new_path = String::from(path);