diff --git a/fs/hmdfs/authority/authentication.c b/fs/hmdfs/authority/authentication.c
index 076e738c92e71b95281a157d3788ae631dee0ccf..fb98cbf9307271337d7adc32b299cb3277302f03 100644
--- a/fs/hmdfs/authority/authentication.c
+++ b/fs/hmdfs/authority/authentication.c
@@ -83,6 +83,7 @@ const struct cred *hmdfs_override_dir_fsids(struct inode *dir,
 		 * services: dfs_share : dfs_share
 		 * other : media_rw : media_rw
 		 **/
+		hmdfs_info("HMDFS_PERM_DFS-dentry->d_name.name: %s", dentry->d_name.name);
 		if (!strcmp(dentry->d_name.name, DFS_SHARE_NAME)) {
 			perm = HMDFS_DIR_SERVICES | level;
 			cred->fsuid = DFS_SHARE_UID;
@@ -91,6 +92,8 @@ const struct cred *hmdfs_override_dir_fsids(struct inode *dir,
 		}
 		if (!strcmp(dentry->d_name.name, PKG_ROOT_NAME)) {
 			perm = HMDFS_DIR_DATA | level;
+		} if (!strcmp(dentry->d_name.name, FILES_NAME)) {
+			perm = AUTH_FILE_MANAGER | HMDFS_DIR_PUBLIC | level;
 		} else {
 			perm = HMDFS_DIR_PUBLIC | level;
 		}
@@ -130,12 +133,18 @@ const struct cred *hmdfs_override_dir_fsids(struct inode *dir,
 		}
 		break;
 	case HMDFS_PERM_OTHER:
+		hmdfs_info("HMDFS_PERM_OTHER-dentry->d_name.name: %s", dentry->d_name.name);
 		cred->fsuid = dir->i_uid;
 		cred->fsgid = dir->i_gid;
 		if (is_pkg_auth(hii->perm))
 			perm = AUTH_PKG | HMDFS_DIR_PKG_SUB | level;
-		else
+		else if (is_filemanager_auth(hii->perm)) {
+			perm = AUTH_FILE_MANAGER | HMDFS_DIR_DEFAULT | level;
+			cred->fsuid = FILE_MANAGER_UID;
+			cred->fsgid = FILE_MANAGER_GID;
+		} else {
 			perm = (hii->perm & AUTH_MASK) | HMDFS_DIR_DEFAULT | level;
+		}
 		break;
 	default:
 		/* ! it should not get to here */
@@ -273,6 +282,7 @@ static __u16 __inherit_perm_dir(struct inode *parent, struct inode *inode)
 		 * services: dfs_share : dfs_share
 		 * other : media_rw : media_rw
 		 **/
+		hmdfs_info("HMDFS_PERM_DFS-dentry->d_name.name: %s", dentry->d_name.name);
 		if (!strcmp(dentry->d_name.name, DFS_SHARE_NAME)) {
 			// "services"
 			perm = HMDFS_DIR_SERVICES | level;
@@ -282,6 +292,10 @@ static __u16 __inherit_perm_dir(struct inode *parent, struct inode *inode)
 		} else if (!strcmp(dentry->d_name.name, SYSTEM_NAME)) {
 			 // "system"
 			perm = AUTH_SYSTEM | HMDFS_DIR_SYSTEM | level;
+		} else if (!strcmp(dentry->d_name.name, FILES_NAME)) {
+			// "files"
+			hmdfs_info("HMDFS_PERM_DFS-dentry->d_name.name: %s", dentry->d_name.name);
+			perm = AUTH_FILE_MANAGER | HMDFS_DIR_PUBLIC | level;
 		} else {
 			perm = HMDFS_DIR_PUBLIC | level;
 		}
@@ -305,10 +319,15 @@ static __u16 __inherit_perm_dir(struct inode *parent, struct inode *inode)
 		}
 		break;
 	case HMDFS_PERM_OTHER:
-		if (is_pkg_auth(info->perm))
+		hmdfs_info("HMDFS_PERM_OTHER-dentry->d_name.name: %s", dentry->d_name.name);
+		if (is_pkg_auth(info->perm)) {
 			perm = AUTH_PKG | HMDFS_DIR_PKG_SUB | level;
-		else
+		} else if (is_filemanager_auth(info->perm)) {
+			hmdfs_info("HMDFS_PERM_OTHER-dentry->d_name.name: %s", dentry->d_name.name);
+			perm = AUTH_FILE_MANAGER | HMDFS_DIR_DEFAULT | level;
+		} else {
 			perm = (info->perm & AUTH_MASK) | HMDFS_DIR_DEFAULT | level;
+		}
 		break;
 	default:
 		/* ! it should not get to here */
@@ -329,8 +348,12 @@ static __u16 __inherit_perm_file(struct inode *parent)
 
 	if (is_pkg_auth(hii->perm))
 		perm = AUTH_PKG | HMDFS_FILE_PKG_SUB | level;
-	else
+	else if (is_filemanager_auth(hii->perm)) {
+		hmdfs_info("__inherit_perm_file->hii->perm: %lld", hii->perm);
+		perm = AUTH_FILE_MANAGER | HMDFS_FILE_DEFAULT | level;
+	} else {
 		perm = (hii->perm & AUTH_MASK) | HMDFS_FILE_DEFAULT | level;
+	}
 
 	return perm;
 }
@@ -389,6 +412,8 @@ void check_and_fixup_ownership_remote(struct inode *dir,
 		}
 		if (!strcmp(dentry->d_name.name, PKG_ROOT_NAME)) {
 			perm = HMDFS_DIR_DATA | level;
+		} if (!strcmp(dentry->d_name.name, FILES_NAME)) {
+			perm = AUTH_FILE_MANAGER | HMDFS_DIR_PUBLIC | level;
 		} else {
 			perm = HMDFS_DIR_PUBLIC | level;
 		}
@@ -435,10 +460,15 @@ void check_and_fixup_ownership_remote(struct inode *dir,
 			perm = AUTH_PKG | HMDFS_DIR_PKG_SUB | level;
 			break;
 		}
-		if (is_pkg_auth(hii->perm))
+		if (is_pkg_auth(hii->perm)) {
 			perm = AUTH_PKG | HMDFS_DIR_PKG_SUB | level;
-		else
+		} else if (is_filemanager_auth(hii->perm)) {
+			perm = AUTH_FILE_MANAGER | HMDFS_DIR_DEFAULT | level;
+			dinode->i_uid = FILE_MANAGER_UID;
+			dinode->i_gid = FILE_MANAGER_GID;
+		} else {
 			perm = (hii->perm & AUTH_MASK) | HMDFS_DIR_DEFAULT | level;
+		}
 		break;
 	default:
 		/* ! it should not get to here */
diff --git a/fs/hmdfs/authority/authentication.h b/fs/hmdfs/authority/authentication.h
index a36636a782865672089d8fd46c45bea78315917d..0a7d55e3db5fb0937f7513d430fdd3631f1e939f 100644
--- a/fs/hmdfs/authority/authentication.h
+++ b/fs/hmdfs/authority/authentication.h
@@ -27,6 +27,7 @@ struct cache_fs_override {
 #define OID_ROOT             	0
 #define OID_SYSTEM        	1000
 #define OID_USER_DATA_RW      	1008
+#define OID_FILE_MANAGER     	1006
 #define OID_DFS_SHARE           3822
 
 /* copied from sdcardfs/multiuser.h */
@@ -38,21 +39,24 @@ struct cache_fs_override {
 #define SYSTEM_UID 		KUIDT_INIT(OID_SYSTEM)
 #define USER_DATA_RW_UID 	KUIDT_INIT(OID_USER_DATA_RW)
 #define DFS_SHARE_UID           KUIDT_INIT(OID_DFS_SHARE)
+#define FILE_MANAGER_UID	KUIDT_INIT(OID_FILE_MANAGER)
 
 #define ROOT_GID 		KGIDT_INIT(OID_ROOT)
 #define SYSTEM_GID 		KGIDT_INIT(OID_SYSTEM)
 #define USER_DATA_RW_GID 	KGIDT_INIT(OID_USER_DATA_RW)
 #define DFS_SHARE_GID           KGIDT_INIT(OID_DFS_SHARE)
+#define FILE_MANAGER_GID	KGIDT_INIT(OID_FILE_MANAGER)
 
 #define PKG_ROOT_NAME "data"
 #define DFS_SHARE_NAME "services"
 #define SYSTEM_NAME "system"
+#define FILES_NAME "files"
 
 /*
  * |           perm fix               | permmnt | permdfs   |  permpkg    | perm other
- * /mnt/mdfs/ accoundID / device view /  local  / DATA      / packageName /...
+ * /mnt/mdfs/ accoundID / device view /  local  / data      / packageName /...
  *                                              / system    /...
- *                                              / documents /...
+ *                                              / files /...
  *                                    /  devid  /.......
  *                      /    merge view         /
  *          / sdcard    /
@@ -168,6 +172,7 @@ static inline bool is_default_file(__u16 perm)
 #define AUTH_PKG  0x0100
 #define AUTH_SYSTEM   0x0200
 #define AUTH_SERVICES 0x0400
+#define AUTH_FILE_MANAGER 0x0800
 
 static inline bool is_pkg_auth(__u16 perm)
 {
@@ -183,6 +188,11 @@ static inline bool is_service_auth(__u16 perm)
 {
 	return (perm & AUTH_MASK) == AUTH_SERVICES;
 }
+
+static inline bool is_filemanager_auth(__u16 perm)
+{
+	return (perm & AUTH_FILE_MANAGER) == AUTH_FILE_MANAGER;
+}
 #define HMDFS_MOUNT_POINT_MASK 0xF000
 #define HMDFS_MNT_COMMON 0x0000  // sdcard
 #define HMDFS_MNT_SDCARD 0x1000  // sdcard
diff --git a/fs/hmdfs/inode_local.c b/fs/hmdfs/inode_local.c
index 346309fd94aa5ee063b350800acfdc3e76892f98..4810d13267b3db5aa3f7de8d9c8b75b0f7a6280e 100644
--- a/fs/hmdfs/inode_local.c
+++ b/fs/hmdfs/inode_local.c
@@ -274,7 +274,7 @@ struct dentry *hmdfs_lookup_local(struct inode *parent_inode,
 			hmdfs_put_reset_lower_path(child_dentry);
 			goto out_err;
 		}
-
+		// fix
 		check_and_fixup_ownership(parent_inode, child_inode);
 		goto out_err;
 	}
@@ -849,7 +849,7 @@ struct dentry *hmdfs_lookup_share(struct inode *parent_inode,
 		hmdfs_put_reset_lower_path(child_dentry);
 		goto err_out;
 	}
-
+	// fix
 	check_and_fixup_ownership(parent_inode, child_inode);
 
 err_out: