[PATCH V2] erofs-utils: fix random data for block-aligned uncompressed file

[Huang Jianan]

在 2021/9/7 21:20, Gao Xiang 写道:
> On Tue, Sep 07, 2021 at 11:53:45AM +0800, Huang Jianan via Linux-erofs wrote:
>> If the file size is block-aligned for uncompressed files, i_u is
>> meaningless for erofs_inode on disk, but it's not cleared when
>> datalayout is seted in erofs_prepare_inode_buffer.
>>
>> This problem will cause inconsistent reproducible builds. Clear the
>> entire erofs_inode to zero to fix this.
>>
>> Signed-off-by: Huang Jianan <huangjianan at oppo.com>
> Reviewed-by: Gao Xiang <xiang at kernel.org>
>
> BTW, how about adding --from="Huang Jianan <huangjianan at oppo.com>" when
> sending patches with OPPO emails.
>
> Otherwise, it seems the author becomes
> "Huang Jianan via Linux-erofs <linux-erofs at lists.ozlabs.org>" when
> reaching to the mailing list and I have to update it by hand....
Thanks for pointing this out, I will pay attention next time.

Thanks,
Jianan
> Thanks,
> Gao Xiang
>
>> ---
>>   lib/inode.c | 12 +-----------
>>   1 file changed, 1 insertion(+), 11 deletions(-)
>>
>> diff --git a/lib/inode.c b/lib/inode.c
>> index 5bad75e..0cce07d 100644
>> --- a/lib/inode.c
>> +++ b/lib/inode.c
>> @@ -834,25 +834,15 @@ static struct erofs_inode *erofs_new_inode(void)
>>   	static unsigned int counter;
>>   	struct erofs_inode *inode;
>>   
>> -	inode = malloc(sizeof(struct erofs_inode));
>> +	inode = calloc(1, sizeof(struct erofs_inode));
>>   	if (!inode)
>>   		return ERR_PTR(-ENOMEM);
>>   
>> -	inode->i_parent = NULL;	/* also used to indicate a new inode */
>> -
>>   	inode->i_ino[0] = counter++;	/* inode serial number */
>>   	inode->i_count = 1;
>>   
>>   	init_list_head(&inode->i_subdirs);
>>   	init_list_head(&inode->i_xattrs);
>> -
>> -	inode->idata_size = 0;
>> -	inode->xattr_isize = 0;
>> -	inode->extent_isize = 0;
>> -
>> -	inode->bh = inode->bh_inline = inode->bh_data = NULL;
>> -	inode->idata = NULL;
>> -	inode->z_physical_clusterblks = 0;
>>   	return inode;
>>   }
>>   
>> -- 
>> 2.25.1
>>