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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>
18 lines
697 B
C
18 lines
697 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef BTRFS_IOCTL_H
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#define BTRFS_IOCTL_H
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long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
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long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
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int btrfs_fileattr_get(struct dentry *dentry, struct fileattr *fa);
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int btrfs_fileattr_set(struct mnt_idmap *idmap,
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struct dentry *dentry, struct fileattr *fa);
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int btrfs_ioctl_get_supported_features(void __user *arg);
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void btrfs_sync_inode_flags_to_i_flags(struct inode *inode);
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int __pure btrfs_is_empty_uuid(u8 *uuid);
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void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info,
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struct btrfs_ioctl_balance_args *bargs);
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#endif
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