2cba9af99b
This makes it harder for accidental or malicious changes to ocfs2_xattr_handlers or ocfs2_xattr_handler_map at runtime. Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: ocfs2-devel@lists.linux.dev Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com> Link: https://lore.kernel.org/r/20230930050033.41174-21-wedsonaf@gmail.com Signed-off-by: Christian Brauner <brauner@kernel.org>
89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* xattr.h
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*
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* Copyright (C) 2004, 2008 Oracle. All rights reserved.
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*/
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#ifndef OCFS2_XATTR_H
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#define OCFS2_XATTR_H
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#include <linux/init.h>
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#include <linux/xattr.h>
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enum ocfs2_xattr_type {
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OCFS2_XATTR_INDEX_USER = 1,
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OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
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OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
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OCFS2_XATTR_INDEX_TRUSTED,
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OCFS2_XATTR_INDEX_SECURITY,
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OCFS2_XATTR_MAX
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};
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struct ocfs2_security_xattr_info {
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int enable;
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const char *name;
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void *value;
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size_t value_len;
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};
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extern const struct xattr_handler ocfs2_xattr_user_handler;
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extern const struct xattr_handler ocfs2_xattr_trusted_handler;
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extern const struct xattr_handler ocfs2_xattr_security_handler;
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extern const struct xattr_handler * const ocfs2_xattr_handlers[];
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ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
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int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
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const char *, void *, size_t);
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int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
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size_t, int);
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int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
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int, const char *, const void *, size_t, int,
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struct ocfs2_alloc_context *,
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struct ocfs2_alloc_context *);
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int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
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struct ocfs2_dinode *di);
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int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
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int ocfs2_init_security_get(struct inode *, struct inode *,
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const struct qstr *,
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struct ocfs2_security_xattr_info *);
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int ocfs2_init_security_set(handle_t *, struct inode *,
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struct buffer_head *,
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struct ocfs2_security_xattr_info *,
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struct ocfs2_alloc_context *,
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struct ocfs2_alloc_context *);
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int ocfs2_calc_security_init(struct inode *,
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struct ocfs2_security_xattr_info *,
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int *, int *, struct ocfs2_alloc_context **);
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int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
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umode_t, struct ocfs2_security_xattr_info *,
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int *, int *, int *);
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/*
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* xattrs can live inside an inode, as part of an external xattr block,
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* or inside an xattr bucket, which is the leaf of a tree rooted in an
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* xattr block. Some of the xattr calls, especially the value setting
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* functions, want to treat each of these locations as equal. Let's wrap
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* them in a structure that we can pass around instead of raw buffer_heads.
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*/
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struct ocfs2_xattr_value_buf {
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struct buffer_head *vb_bh;
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ocfs2_journal_access_func vb_access;
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struct ocfs2_xattr_value_root *vb_xv;
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};
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int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
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struct buffer_head *fe_bh,
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struct ocfs2_caching_info *ref_ci,
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struct buffer_head *ref_root_bh,
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struct ocfs2_cached_dealloc_ctxt *dealloc);
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int ocfs2_reflink_xattrs(struct inode *old_inode,
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struct buffer_head *old_bh,
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struct inode *new_inode,
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struct buffer_head *new_bh,
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bool preserve_security);
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int ocfs2_init_security_and_acl(struct inode *dir,
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struct inode *inode,
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const struct qstr *qstr);
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#endif /* OCFS2_XATTR_H */
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