add driver 5G

hc

2024-01-31 f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2

 kernel/fs/ext2/namei.c
..
..
@@ -57,13 +57,17 @@
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 {
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 	struct inode * inode;
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 	ino_t ino;
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+	int res;
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61
 	
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 	if (dentry->d_name.len > EXT2_NAME_LEN)
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 		return ERR_PTR(-ENAMETOOLONG);
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64
 
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-	ino = ext2_inode_by_name(dir, &dentry->d_name);
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-	inode = NULL;
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-	if (ino) {
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+	res = ext2_inode_by_name(dir, &dentry->d_name, &ino);
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+	if (res) {
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+		if (res != -ENOENT)
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+			return ERR_PTR(res);
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+		inode = NULL;
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+	} else {
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 		inode = ext2_iget(dir->i_sb, ino);
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 		if (inode == ERR_PTR(-ESTALE)) {
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 			ext2_error(dir->i_sb, __func__,
..
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@@ -78,9 +82,13 @@
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 struct dentry *ext2_get_parent(struct dentry *child)
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 {
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 	struct qstr dotdot = QSTR_INIT("..", 2);
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-	unsigned long ino = ext2_inode_by_name(d_inode(child), &dotdot);
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-	if (!ino)
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-		return ERR_PTR(-ENOENT);
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+	ino_t ino;
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+	int res;
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+
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+	res = ext2_inode_by_name(d_inode(child), &dotdot, &ino);
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+	if (res)
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+		return ERR_PTR(res);
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+
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 	return d_obtain_alias(ext2_iget(child->d_sb, ino));
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 } 
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94
 
..
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@@ -136,9 +144,7 @@
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 	err = PTR_ERR(inode);
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 	if (!IS_ERR(inode)) {
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 		init_special_inode(inode, inode->i_mode, rdev);
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-#ifdef CONFIG_EXT2_FS_XATTR
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 		inode->i_op = &ext2_special_inode_operations;
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-#endif
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 		mark_inode_dirty(inode);
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 		err = ext2_add_nondir(dentry, inode);
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 	}
..
..
@@ -276,9 +282,9 @@
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 	if (err)
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 		goto out;
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284
 
279
-	de = ext2_find_entry (dir, &dentry->d_name, &page);
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-	if (!de) {
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-		err = -ENOENT;
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+	de = ext2_find_entry(dir, &dentry->d_name, &page);
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+	if (IS_ERR(de)) {
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+		err = PTR_ERR(de);
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 		goto out;
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 	}
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290
 
..
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@@ -332,9 +338,9 @@
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 	if (err)
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 		goto out;
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340
 
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-	old_de = ext2_find_entry (old_dir, &old_dentry->d_name, &old_page);
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-	if (!old_de) {
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-		err = -ENOENT;
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+	old_de = ext2_find_entry(old_dir, &old_dentry->d_name, &old_page);
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+	if (IS_ERR(old_de)) {
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+		err = PTR_ERR(old_de);
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 		goto out;
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 	}
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346
 
..
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@@ -353,10 +359,11 @@
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 		if (dir_de && !ext2_empty_dir (new_inode))
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 			goto out_dir;
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-		err = -ENOENT;
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-		new_de = ext2_find_entry (new_dir, &new_dentry->d_name, &new_page);
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-		if (!new_de)
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+		new_de = ext2_find_entry(new_dir, &new_dentry->d_name, &new_page);
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+		if (IS_ERR(new_de)) {
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+			err = PTR_ERR(new_de);
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 			goto out_dir;
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+		}
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 		ext2_set_link(new_dir, new_de, new_page, old_inode, 1);
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 		new_inode->i_ctime = current_time(new_inode);
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369
 		if (dir_de)
..
..
@@ -413,9 +420,8 @@
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 	.rmdir		= ext2_rmdir,
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 	.mknod		= ext2_mknod,
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 	.rename		= ext2_rename,
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-#ifdef CONFIG_EXT2_FS_XATTR
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 	.listxattr	= ext2_listxattr,
418
-#endif
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+	.getattr	= ext2_getattr,
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 	.setattr	= ext2_setattr,
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 	.get_acl	= ext2_get_acl,
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 	.set_acl	= ext2_set_acl,
..
..
@@ -423,9 +429,8 @@
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429
 };
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430
 
425
431
 const struct inode_operations ext2_special_inode_operations = {
426
-#ifdef CONFIG_EXT2_FS_XATTR
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 	.listxattr	= ext2_listxattr,
428
-#endif
433
+	.getattr	= ext2_getattr,
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 	.setattr	= ext2_setattr,
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 	.get_acl	= ext2_get_acl,
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 	.set_acl	= ext2_set_acl,