Remove the shim kernel crate

kernel/src/syscall/fsync.rs

@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: MPL-2.0
+
+use super::SyscallReturn;
+use crate::{
+    fs::{file_table::FileDesc, inode_handle::InodeHandle},
+    prelude::*,
+};
+
+pub fn sys_fsync(fd: FileDesc, ctx: &Context) -> Result<SyscallReturn> {
+    debug!("fd = {}", fd);
+
+    let dentry = {
+        let file_table = ctx.process.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_all()?;
+    Ok(SyscallReturn::Return(0))
+}
+
+pub fn sys_fdatasync(fd: FileDesc, ctx: &Context) -> Result<SyscallReturn> {
+    debug!("fd = {}", fd);
+
+    let dentry = {
+        let file_table = ctx.process.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_data()?;
+    Ok(SyscallReturn::Return(0))
+}