Add chmod for INode

rcore-fs-sefs/src/lib.rs

@@ -165,6 +165,13 @@ impl vfs::INode for INodeImpl {
             blk_size: 0x1000,
         })
     }
+
+    fn chmod(&self, mode: u16) -> vfs::Result<()> {
+        let mut disk_inode = self.disk_inode.write();
+        disk_inode.mode = mode;
+        Ok(())
+    }
+
     fn sync_all(&self) -> vfs::Result<()> {
         let mut disk_inode = self.disk_inode.write();
         if disk_inode.dirty() {

rcore-fs-sfs/src/lib.rs

@@ -307,6 +307,12 @@ impl vfs::INode for INodeImpl {
             blk_size: BLKSIZE,
         })
     }
+
+    fn chmod(&self, mode: u16) -> vfs::Result<()> {
+        // No-op for sfs
+        Ok(())
+    }
+
     fn sync_all(&self) -> vfs::Result<()> {
         let mut disk_inode = self.disk_inode.write();
         if disk_inode.dirty() {

rcore-fs/src/vfs.rs

@@ -9,6 +9,7 @@ pub trait INode: Any + Sync + Send {
     fn read_at(&self, offset: usize, buf: &mut [u8]) -> Result<usize>;
     fn write_at(&self, offset: usize, buf: &[u8]) -> Result<usize>;
     fn metadata(&self) -> Result<Metadata>;
+    fn chmod(&self, mode: u16) -> Result<()>;
     /// Sync all data and metadata
     fn sync_all(&self) -> Result<()>;
     /// Sync data (not include metadata)