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8782a9aea3
Convert to struct mnt_idmap.
Last cycle we merged the necessary infrastructure in
256c8aed2b ("fs: introduce dedicated idmap type for mounts").
This is just the conversion to struct mnt_idmap.
Currently we still pass around the plain namespace that was attached to a
mount. This is in general pretty convenient but it makes it easy to
conflate namespaces that are relevant on the filesystem with namespaces
that are relevent on the mount level. Especially for non-vfs developers
without detailed knowledge in this area this can be a potential source for
bugs.
Once the conversion to struct mnt_idmap is done all helpers down to the
really low-level helpers will take a struct mnt_idmap argument instead of
two namespace arguments. This way it becomes impossible to conflate the two
eliminating the possibility of any bugs. All of the vfs and all filesystems
only operate on struct mnt_idmap.
Acked-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2008 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#ifndef __XFS_IOCTL_H__
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#define __XFS_IOCTL_H__
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struct xfs_bstat;
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struct xfs_ibulk;
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struct xfs_inogrp;
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int
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xfs_ioc_swapext(
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xfs_swapext_t *sxp);
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extern int
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xfs_find_handle(
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unsigned int cmd,
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xfs_fsop_handlereq_t *hreq);
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extern int
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xfs_open_by_handle(
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struct file *parfilp,
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xfs_fsop_handlereq_t *hreq);
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extern int
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xfs_readlink_by_handle(
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struct file *parfilp,
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xfs_fsop_handlereq_t *hreq);
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int xfs_ioc_attrmulti_one(struct file *parfilp, struct inode *inode,
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uint32_t opcode, void __user *uname, void __user *value,
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uint32_t *len, uint32_t flags);
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int xfs_ioc_attr_list(struct xfs_inode *dp, void __user *ubuf,
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size_t bufsize, int flags,
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struct xfs_attrlist_cursor __user *ucursor);
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extern struct dentry *
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xfs_handle_to_dentry(
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struct file *parfilp,
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void __user *uhandle,
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u32 hlen);
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extern int
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xfs_fileattr_get(
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struct dentry *dentry,
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struct fileattr *fa);
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extern int
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xfs_fileattr_set(
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struct mnt_idmap *idmap,
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struct dentry *dentry,
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struct fileattr *fa);
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extern long
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xfs_file_ioctl(
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struct file *filp,
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unsigned int cmd,
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unsigned long p);
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extern long
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xfs_file_compat_ioctl(
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struct file *file,
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unsigned int cmd,
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unsigned long arg);
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int xfs_fsbulkstat_one_fmt(struct xfs_ibulk *breq,
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const struct xfs_bulkstat *bstat);
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int xfs_fsinumbers_fmt(struct xfs_ibulk *breq, const struct xfs_inumbers *igrp);
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#endif
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