From: Christoph Hellwig <hch@lst.de>
To: Carlos Maiolino <cmaiolino@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, hch@lst.de, adilger@dilger.ca,
sandeen@redhat.com, david@fromorbit.com
Subject: Re: [PATCH 04/10 V2] fibmap: Use bmap instead of ->bmap method in ioctl_fibmap
Date: Mon, 14 Jan 2019 17:49:02 +0100 [thread overview]
Message-ID: <20190114164902.GA7187@lst.de> (raw)
In-Reply-To: <20181205091728.29903-5-cmaiolino@redhat.com>
On Wed, Dec 05, 2018 at 10:17:22AM +0100, Carlos Maiolino wrote:
> Now we have the possibility of proper error return in bmap, use bmap()
> function in ioctl_fibmap() instead of calling ->bmap method directly.
>
> V2:
> - Use a local sector_t variable to asign the block number
> instead of using direct casting.
>
> Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
> ---
> fs/ioctl.c | 27 +++++++++++++++++----------
> 1 file changed, 17 insertions(+), 10 deletions(-)
>
> diff --git a/fs/ioctl.c b/fs/ioctl.c
> index d64f622cac8b..e0cc0dd5f9aa 100644
> --- a/fs/ioctl.c
> +++ b/fs/ioctl.c
> @@ -53,19 +53,26 @@ EXPORT_SYMBOL(vfs_ioctl);
>
> static int ioctl_fibmap(struct file *filp, int __user *p)
> {
> + struct inode *inode = file_inode(filp);
> + int error, usr_blk;
> + sector_t block;
>
> if (!capable(CAP_SYS_RAWIO))
> return -EPERM;
> +
> + error = get_user(usr_blk, p);
> + if (error)
> + return error;
Does get_user/put_user actually return an error?
All the code I know just does:
if (get_user()))
return -EFAULT;
and co.
> +
> + block = usr_blk;
> + error = bmap(inode, &block);
> + if (error)
> + return error;
> + usr_blk = block;
Nitpick: maybe i'd name ur_block block and block sector, which seems
to flow a little better.
next prev parent reply other threads:[~2019-01-14 16:49 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-05 9:17 [PATCH 00/10 V2] New ->fiemap infrastructure and ->bmap removal Carlos Maiolino
2018-12-05 9:17 ` [PATCH 01/10] fs: Enable bmap() function to properly return errors Carlos Maiolino
2018-12-05 9:17 ` [PATCH 02/10] cachefiles: drop direct usage of ->bmap method Carlos Maiolino
2018-12-05 9:17 ` [PATCH 03/10] ecryptfs: drop direct calls to ->bmap Carlos Maiolino
2018-12-05 9:17 ` [PATCH 04/10 V2] fibmap: Use bmap instead of ->bmap method in ioctl_fibmap Carlos Maiolino
2019-01-14 16:49 ` Christoph Hellwig [this message]
2019-02-04 11:34 ` Carlos Maiolino
2018-12-05 9:17 ` [PATCH 05/10] fs: Move start and length fiemap fields into fiemap_extent_info Carlos Maiolino
2019-01-14 16:50 ` Christoph Hellwig
2018-12-05 9:17 ` [PATCH 06/10] iomap: Remove length and start fields from iomap_fiemap Carlos Maiolino
2019-01-14 16:51 ` Christoph Hellwig
2018-12-05 9:17 ` [PATCH 07/10] fs: Use a void pointer to store fiemap_extent Carlos Maiolino
2019-01-14 16:53 ` Christoph Hellwig
2018-12-05 9:17 ` [PATCH 08/10 V2] fiemap: Use a callback to fill fiemap extents Carlos Maiolino
2019-01-14 16:53 ` Christoph Hellwig
2018-12-05 9:17 ` [PATCH 09/10 V2] Use FIEMAP for FIBMAP calls Carlos Maiolino
2018-12-05 17:36 ` Darrick J. Wong
2018-12-07 9:09 ` Carlos Maiolino
2018-12-07 20:14 ` Andreas Dilger
2019-02-04 15:11 ` Carlos Maiolino
2019-02-04 18:27 ` Darrick J. Wong
2019-02-06 13:37 ` Carlos Maiolino
2019-02-06 20:44 ` Darrick J. Wong
2019-02-06 21:13 ` Andreas Dilger
2019-02-07 9:52 ` Carlos Maiolino
2019-02-08 8:43 ` Christoph Hellwig
2019-02-11 12:57 ` Christoph Hellwig
2019-02-11 16:21 ` Carlos Maiolino
2019-02-11 16:48 ` Christoph Hellwig
2019-02-07 11:59 ` Carlos Maiolino
2019-02-07 17:02 ` Darrick J. Wong
2019-02-07 21:25 ` Andreas Dilger
2019-02-08 8:46 ` Christoph Hellwig
2019-02-08 10:36 ` Carlos Maiolino
2019-02-08 21:03 ` Andreas Dilger
2019-02-08 9:08 ` Carlos Maiolino
2019-02-08 9:03 ` Carlos Maiolino
2019-02-07 12:36 ` Carlos Maiolino
2019-02-07 18:16 ` Darrick J. Wong
2019-02-08 8:58 ` Carlos Maiolino
2019-02-06 21:04 ` Andreas Dilger
2019-01-14 16:56 ` Christoph Hellwig
2019-02-05 9:56 ` Carlos Maiolino
2019-02-05 18:25 ` Christoph Hellwig
2019-02-06 9:50 ` Carlos Maiolino
2018-12-05 9:17 ` [PATCH 10/10] xfs: Get rid of ->bmap Carlos Maiolino
2018-12-05 17:37 ` Darrick J. Wong
2018-12-06 13:06 ` Carlos Maiolino
2018-12-06 18:56 ` [PATCH 00/10 V2] New ->fiemap infrastructure and ->bmap removal Andreas Grünbacher
2018-12-07 9:34 ` Carlos Maiolino
2019-01-14 16:50 ` Christoph Hellwig
2019-01-14 17:56 ` Andreas Grünbacher
2019-01-14 17:58 ` Christoph Hellwig
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