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13e83a4923
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>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* fs/f2fs/acl.h
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* Portions of this code from linux/fs/ext2/acl.h
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*
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* Copyright (C) 2001-2003 Andreas Gruenbacher, <agruen@suse.de>
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*/
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#ifndef __F2FS_ACL_H__
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#define __F2FS_ACL_H__
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#include <linux/posix_acl_xattr.h>
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#define F2FS_ACL_VERSION 0x0001
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struct f2fs_acl_entry {
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__le16 e_tag;
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__le16 e_perm;
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__le32 e_id;
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};
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struct f2fs_acl_entry_short {
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__le16 e_tag;
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__le16 e_perm;
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};
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struct f2fs_acl_header {
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__le32 a_version;
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};
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#ifdef CONFIG_F2FS_FS_POSIX_ACL
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extern struct posix_acl *f2fs_get_acl(struct inode *, int, bool);
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extern int f2fs_set_acl(struct mnt_idmap *, struct dentry *,
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struct posix_acl *, int);
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extern int f2fs_init_acl(struct inode *, struct inode *, struct page *,
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struct page *);
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#else
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#define f2fs_get_acl NULL
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#define f2fs_set_acl NULL
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static inline int f2fs_init_acl(struct inode *inode, struct inode *dir,
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struct page *ipage, struct page *dpage)
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{
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return 0;
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}
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#endif
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#endif /* __F2FS_ACL_H__ */
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