linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: "Pali Rohár" <pali@kernel.org>
To: Kari Argillander <kari.argillander@gmail.com>, viro@zeniv.linux.org.uk
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	dsterba@suse.cz, aaptel@suse.com, willy@infradead.org,
	rdunlap@infradead.org, joe@perches.com, mark@harmstone.com,
	nborisov@suse.com, linux-ntfs-dev@lists.sourceforge.net,
	anton@tuxera.com, dan.carpenter@oracle.com, hch@lst.de,
	ebiggers@kernel.org, andy.lavr@gmail.com,
	oleksandr@natalenko.name
Subject: Re: [PATCH v27 04/10] fs/ntfs3: Add file operations and implementation
Date: Sun, 22 Aug 2021 14:20:03 +0200	[thread overview]
Message-ID: <20210822122003.kb56lexgvv6prf2t@pali> (raw)
In-Reply-To: <20210729134943.778917-5-almaz.alexandrovich@paragon-software.com>

On Thursday 29 July 2021 16:49:37 Konstantin Komarov wrote:
> diff --git a/fs/ntfs3/file.c b/fs/ntfs3/file.c
> new file mode 100644
> index 000000000..b4369c61a
> --- /dev/null
> +++ b/fs/ntfs3/file.c
> @@ -0,0 +1,1130 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + *
> + * Copyright (C) 2019-2021 Paragon Software GmbH, All rights reserved.
> + *
> + *  regular file handling primitives for ntfs-based filesystems
> + */
> +#include <linux/backing-dev.h>
> +#include <linux/buffer_head.h>
> +#include <linux/compat.h>
> +#include <linux/falloc.h>
> +#include <linux/fiemap.h>
> +#include <linux/msdos_fs.h> /* FAT_IOCTL_XXX */
> +#include <linux/nls.h>
> +
> +#include "debug.h"
> +#include "ntfs.h"
> +#include "ntfs_fs.h"
> +
> +static int ntfs_ioctl_fitrim(struct ntfs_sb_info *sbi, unsigned long arg)
> +{
> +	struct fstrim_range __user *user_range;
> +	struct fstrim_range range;
> +	struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev);
> +	int err;
> +
> +	if (!capable(CAP_SYS_ADMIN))
> +		return -EPERM;
> +
> +	if (!blk_queue_discard(q))
> +		return -EOPNOTSUPP;
> +
> +	user_range = (struct fstrim_range __user *)arg;
> +	if (copy_from_user(&range, user_range, sizeof(range)))
> +		return -EFAULT;
> +
> +	range.minlen = max_t(u32, range.minlen, q->limits.discard_granularity);
> +
> +	err = ntfs_trim_fs(sbi, &range);
> +	if (err < 0)
> +		return err;
> +
> +	if (copy_to_user(user_range, &range, sizeof(range)))
> +		return -EFAULT;
> +
> +	return 0;
> +}
> +
> +static long ntfs_ioctl(struct file *filp, u32 cmd, unsigned long arg)
> +{
> +	struct inode *inode = file_inode(filp);
> +	struct ntfs_sb_info *sbi = inode->i_sb->s_fs_info;
> +	u32 __user *user_attr = (u32 __user *)arg;
> +
> +	switch (cmd) {
> +	case FAT_IOCTL_GET_ATTRIBUTES:
> +		return put_user(le32_to_cpu(ntfs_i(inode)->std_fa), user_attr);
> +
> +	case FAT_IOCTL_GET_VOLUME_ID:
> +		return put_user(sbi->volume.ser_num, user_attr);
> +
> +	case FITRIM:
> +		return ntfs_ioctl_fitrim(sbi, arg);
> +	}
> +	return -ENOTTY; /* Inappropriate ioctl for device */
> +}

Hello! What with these two FAT_* ioctls in NTFS code? Should NTFS driver
really implements FAT ioctls? Because they looks like some legacy API
which is even not implemented by current ntfs.ko driver.

Specially, should FS driver implements ioctl for get volume id which in
this way? Because basically every fs have some kind of uuid / volume id
and they can be already retrieved by appropriate userspace tool.

  parent reply	other threads:[~2021-08-22 12:20 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-29 13:49 [PATCH v27 00/10] NTFS read-write driver GPL implementation by Paragon Software Konstantin Komarov
2021-07-29 13:49 ` [PATCH v27 01/10] fs/ntfs3: Add headers and misc files Konstantin Komarov
2021-07-29 13:49 ` [PATCH v27 02/10] fs/ntfs3: Add initialization of super block Konstantin Komarov
2021-07-29 15:59   ` Matthew Wilcox
2021-07-30  8:28   ` Christophe JAILLET
2021-08-10  9:02   ` Christoph Hellwig
2021-07-29 13:49 ` [PATCH v27 03/10] fs/ntfs3: Add bitmap Konstantin Komarov
2021-07-30  8:11   ` Christophe JAILLET
2021-07-29 13:49 ` [PATCH v27 04/10] fs/ntfs3: Add file operations and implementation Konstantin Komarov
2021-07-30  7:40   ` Christophe JAILLET
2021-08-22 12:20   ` Pali Rohár [this message]
2021-08-22 14:31     ` Kari Argillander
2021-08-24 11:33       ` Pali Rohár
2021-07-29 13:49 ` [PATCH v27 05/10] fs/ntfs3: Add attrib operations Konstantin Komarov
2021-07-30  7:30   ` Christophe JAILLET
2021-07-29 13:49 ` [PATCH v27 06/10] fs/ntfs3: Add compression Konstantin Komarov
2021-07-29 13:49 ` [PATCH v27 07/10] fs/ntfs3: Add NTFS journal Konstantin Komarov
2021-07-30  8:06   ` Christophe JAILLET
2021-07-29 13:49 ` [PATCH v27 08/10] fs/ntfs3: Add Kconfig, Makefile and doc Konstantin Komarov
2021-08-10  7:47   ` Kari Argillander
2021-08-10  8:19     ` Pali Rohár
2021-08-10  8:46       ` Kari Argillander
2021-07-29 13:49 ` [PATCH v27 09/10] fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile Konstantin Komarov
2021-07-29 13:49 ` [PATCH v27 10/10] fs/ntfs3: Add MAINTAINERS Konstantin Komarov
2021-08-09 10:56   ` David Sterba
2021-08-09 16:16     ` Konstantin Komarov
2021-08-09 16:44       ` Kari Argillander
2021-08-09 16:54         ` Randy Dunlap
2021-08-09 18:56           ` Dan Williams
2021-08-09 19:45             ` Kari Argillander
2021-07-29 16:24 ` [PATCH v27 00/10] NTFS read-write driver GPL implementation by Paragon Software Darrick J. Wong
2021-08-02  3:23   ` Theodore Ts'o
2021-08-02 15:05     ` Theodore Ts'o
2021-08-12 17:03     ` Kari Argillander
2021-08-13 15:53       ` Kari Argillander
2021-08-21 12:38     ` Yan Pashkovsky
2021-08-03 11:57 ` [PATCH] Restyle comments to better align with kernel-doc Kari Argillander
2021-08-03 13:38   ` Dan Carpenter
2021-08-03 15:26     ` Kari Argillander
2021-08-03 15:41       ` Matthew Wilcox
2021-08-30 16:10   ` Konstantin Komarov
2021-08-30 17:13     ` Kari Argillander
2021-08-10  5:46 ` [PATCH v27 00/10] NTFS read-write driver GPL implementation by Paragon Software Kari Argillander
2021-08-10  6:47   ` Darrick J. Wong

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210822122003.kb56lexgvv6prf2t@pali \
    --to=pali@kernel.org \
    --cc=aaptel@suse.com \
    --cc=almaz.alexandrovich@paragon-software.com \
    --cc=andy.lavr@gmail.com \
    --cc=anton@tuxera.com \
    --cc=dan.carpenter@oracle.com \
    --cc=dsterba@suse.cz \
    --cc=ebiggers@kernel.org \
    --cc=hch@lst.de \
    --cc=joe@perches.com \
    --cc=kari.argillander@gmail.com \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-ntfs-dev@lists.sourceforge.net \
    --cc=mark@harmstone.com \
    --cc=nborisov@suse.com \
    --cc=oleksandr@natalenko.name \
    --cc=rdunlap@infradead.org \
    --cc=viro@zeniv.linux.org.uk \
    --cc=willy@infradead.org \
    --subject='Re: [PATCH v27 04/10] fs/ntfs3: Add file operations and implementation' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).