linux-kernel - Re: [PATCH] f2fs: expose some sectors to user in inline data or dentry case

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 17 Oct 2017 15:03:27 -0700
From:   Jaegeuk Kim <jaegeuk@...nel.org>
To:     Chao Yu <yuchao0@...wei.com>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH] f2fs: expose some sectors to user in inline data or
 dentry case

On 10/16, Chao Yu wrote:
> On 2017/10/14 1:31, Jaegeuk Kim wrote:
> > If there's some data written through inline data or dentry, we need to shouw
> > st_blocks. This fixes reporting zero blocks even though there is small written
> > data.
> > 
> > Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
> 
> Reviewed-by: Chao Yu <yuchao0@...wei.com>
> 
> Thanks,
> 
> > ---
> >  fs/f2fs/file.c | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> > index 2eb3efe92018..f7be6c394fa8 100644
> > --- a/fs/f2fs/file.c
> > +++ b/fs/f2fs/file.c
> > @@ -698,6 +698,11 @@ int f2fs_getattr(const struct path *path, struct kstat *stat,
> >  				  STATX_ATTR_NODUMP);
> >  
> >  	generic_fillattr(inode, stat);
> > +
> > +	/* we need to show initial sectors used for inline_data/dentries */
> > +	if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))

FYI;
I added S_ISREG(inode->i_mode) with f2fs_has_inline_data() to avoid quotacheck
error.

> > +		stat->blocks += (stat->size + 511) >> 9;
> > +
> >  	return 0;
> >  }
> >  
> >