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https://github.com/torvalds/linux
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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>
55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 */
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/*
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* Copyright IBM Corporation, 2010
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* Author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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*/
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#ifndef FS_9P_ACL_H
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#define FS_9P_ACL_H
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#ifdef CONFIG_9P_FS_POSIX_ACL
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int v9fs_get_acl(struct inode *inode, struct p9_fid *fid);
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struct posix_acl *v9fs_iop_get_inode_acl(struct inode *inode, int type,
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bool rcu);
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struct posix_acl *v9fs_iop_get_acl(struct mnt_idmap *idmap,
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struct dentry *dentry, int type);
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int v9fs_iop_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
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struct posix_acl *acl, int type);
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int v9fs_acl_chmod(struct inode *inode, struct p9_fid *fid);
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int v9fs_set_create_acl(struct inode *inode, struct p9_fid *fid,
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struct posix_acl *dacl, struct posix_acl *acl);
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int v9fs_acl_mode(struct inode *dir, umode_t *modep,
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struct posix_acl **dpacl, struct posix_acl **pacl);
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void v9fs_put_acl(struct posix_acl *dacl, struct posix_acl *acl);
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#else
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#define v9fs_iop_get_inode_acl NULL
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#define v9fs_iop_get_acl NULL
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#define v9fs_iop_set_acl NULL
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static inline int v9fs_get_acl(struct inode *inode, struct p9_fid *fid)
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{
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return 0;
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}
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static inline int v9fs_acl_chmod(struct inode *inode, struct p9_fid *fid)
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{
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return 0;
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}
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static inline int v9fs_set_create_acl(struct inode *inode,
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struct p9_fid *fid,
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struct posix_acl *dacl,
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struct posix_acl *acl)
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{
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return 0;
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}
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static inline void v9fs_put_acl(struct posix_acl *dacl,
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struct posix_acl *acl)
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{
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}
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static inline int v9fs_acl_mode(struct inode *dir, umode_t *modep,
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struct posix_acl **dpacl,
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struct posix_acl **pacl)
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{
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return 0;
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}
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#endif
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#endif /* FS_9P_XATTR_H */
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