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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>
44 lines
1007 B
C
44 lines
1007 B
C
/*
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* JFFS2 -- Journalling Flash File System, Version 2.
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*
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* Copyright © 2006 NEC Corporation
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*
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* Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
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*
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* For licensing information, see the file 'LICENCE' in this directory.
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*
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*/
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struct jffs2_acl_entry {
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jint16_t e_tag;
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jint16_t e_perm;
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jint32_t e_id;
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};
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struct jffs2_acl_entry_short {
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jint16_t e_tag;
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jint16_t e_perm;
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};
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struct jffs2_acl_header {
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jint32_t a_version;
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struct jffs2_acl_entry a_entries[];
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};
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#ifdef CONFIG_JFFS2_FS_POSIX_ACL
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struct posix_acl *jffs2_get_acl(struct inode *inode, int type, bool rcu);
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int jffs2_set_acl(struct mnt_idmap *idmap, struct dentry *dentry,
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struct posix_acl *acl, int type);
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extern int jffs2_init_acl_pre(struct inode *, struct inode *, umode_t *);
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extern int jffs2_init_acl_post(struct inode *);
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#else
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#define jffs2_get_acl (NULL)
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#define jffs2_set_acl (NULL)
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#define jffs2_init_acl_pre(dir_i,inode,mode) (0)
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#define jffs2_init_acl_post(inode) (0)
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#endif /* CONFIG_JFFS2_FS_POSIX_ACL */
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