Refactor project structure

kernel/aster-nix/src/syscall/fsync.rs

@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: MPL-2.0
+
+use super::{SyscallReturn, SYS_FSYNC};
+use crate::{
+    fs::{file_table::FileDescripter, inode_handle::InodeHandle},
+    log_syscall_entry,
+    prelude::*,
+};
+
+pub fn sys_fsync(fd: FileDescripter) -> Result<SyscallReturn> {
+    log_syscall_entry!(SYS_FSYNC);
+    debug!("fd = {}", fd);
+
+    let dentry = {
+        let current = current!();
+        let file_table = current.file_table().lock();
+        let file = file_table.get_file(fd)?;
+        let inode_handle = file
+            .downcast_ref::<InodeHandle>()
+            .ok_or(Error::with_message(Errno::EINVAL, "not inode"))?;
+        inode_handle.dentry().clone()
+    };
+    dentry.sync()?;
+    Ok(SyscallReturn::Return(0))
+}