Fix fd table behaviours

api/arceos_posix_api/Cargo.toml

@@ -48,11 +48,11 @@ axns = { workspace = true, optional = true }
 # Other crates
 axio = "0.1"
 axerrno = "0.1"
-flatten_objects = "0.2"
+flatten_objects = { git = "https://github.com/arceos-org/flatten_objects.git", rev = "8da6573" }
 static_assertions = "1.1.0"
 spin = { version = "0.9" }
 lazy_static = { version = "1.5", features = ["spin_no_std"] }
 ctor_bare = "0.2"
 
 [build-dependencies]
-bindgen ={ version = "0.69" }
+bindgen = { version = "0.69" }

api/arceos_posix_api/src/imp/fd_ops.rs

@@ -31,9 +31,8 @@ impl FD_TABLE {
     pub fn copy_inner(&self) -> RwLock<FlattenObjects<Arc<dyn FileLike>, AX_FILE_LIMIT>> {
         let table = self.read();
         let mut new_table = FlattenObjects::new();
-        let count = table.count();
-        for i in 0..count {
-            let _ = new_table.add_at(i, table.get(i).unwrap().clone());
+        for id in table.ids() {
+            let _ = new_table.add_at(id, table.get(id).unwrap().clone());
         }
         RwLock::new(new_table)
     }

api/arceos_posix_api/src/imp/path_link.rs

@@ -8,8 +8,6 @@ use alloc::string::{String, ToString};
 use axerrno::{AxError, AxResult};
 use axfs::api::{canonicalize, current_dir};
 
-use super::fd_ops::FD_TABLE;
-
 /// 一个规范化的文件路径表示
 #[derive(Clone, Eq, PartialEq, Ord, PartialOrd, Debug)]
 pub struct FilePath(String);
@@ -343,22 +341,12 @@ fn handle_empty_path(dir_fd: isize) -> AxResult<String> {
         return Ok(String::from("."));
     }
 
-    let fd_table = FD_TABLE.write();
-    if dir_fd >= fd_table.count() as isize || dir_fd < 0 {
-        axlog::warn!("文件描述符索引超出范围");
-        return Err(AxError::InvalidInput);
-    }
     super::fs::Directory::from_fd(dir_fd as i32)
         .map(|dir| dir.path().to_string())
         .map_err(|_| AxError::NotFound)
 }
 
 fn handle_relative_path(dir_fd: isize, path: &str) -> AxResult<String> {
-    let fd_table = FD_TABLE.write();
-    if dir_fd >= fd_table.count() as isize || dir_fd < 0 {
-        axlog::warn!("文件描述符索引超出范围");
-        return Err(AxError::InvalidInput);
-    }
     match super::fs::Directory::from_fd(dir_fd as i32) {
         Ok(dir) => {
             // 假设目录路径以 '/' 结尾，无需手动添加