LXR linux/fs/ocfs2/xattr.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/* -*- mode: c; c-basic-offset: 8; -*-
   3 * vim: noexpandtab sw=8 ts=8 sts=0:
   4 *
   5 * xattr.h
   6 *
   7 * Copyright (C) 2004, 2008 Oracle.  All rights reserved.
   8 */
   9
  10#ifndef OCFS2_XATTR_H
  11#define OCFS2_XATTR_H
  12
  13#include <linux/init.h>
  14#include <linux/xattr.h>
  15
  16enum ocfs2_xattr_type {
  17        OCFS2_XATTR_INDEX_USER = 1,
  18        OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
  19        OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
  20        OCFS2_XATTR_INDEX_TRUSTED,
  21        OCFS2_XATTR_INDEX_SECURITY,
  22        OCFS2_XATTR_MAX
  23};
  24
  25struct ocfs2_security_xattr_info {
  26        int enable;
  27        const char *name;
  28        void *value;
  29        size_t value_len;
  30};
  31
  32extern const struct xattr_handler ocfs2_xattr_user_handler;
  33extern const struct xattr_handler ocfs2_xattr_trusted_handler;
  34extern const struct xattr_handler ocfs2_xattr_security_handler;
  35extern const struct xattr_handler *ocfs2_xattr_handlers[];
  36
  37ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
  38int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
  39                           const char *, void *, size_t);
  40int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
  41                    size_t, int);
  42int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
  43                           int, const char *, const void *, size_t, int,
  44                           struct ocfs2_alloc_context *,
  45                           struct ocfs2_alloc_context *);
  46int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
  47                                         struct ocfs2_dinode *di);
  48int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
  49int ocfs2_init_security_get(struct inode *, struct inode *,
  50                            const struct qstr *,
  51                            struct ocfs2_security_xattr_info *);
  52int ocfs2_init_security_set(handle_t *, struct inode *,
  53                            struct buffer_head *,
  54                            struct ocfs2_security_xattr_info *,
  55                            struct ocfs2_alloc_context *,
  56                            struct ocfs2_alloc_context *);
  57int ocfs2_calc_security_init(struct inode *,
  58                             struct ocfs2_security_xattr_info *,
  59                             int *, int *, struct ocfs2_alloc_context **);
  60int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
  61                          umode_t, struct ocfs2_security_xattr_info *,
  62                          int *, int *, int *);
  63
  64/*
  65 * xattrs can live inside an inode, as part of an external xattr block,
  66 * or inside an xattr bucket, which is the leaf of a tree rooted in an
  67 * xattr block.  Some of the xattr calls, especially the value setting
  68 * functions, want to treat each of these locations as equal.  Let's wrap
  69 * them in a structure that we can pass around instead of raw buffer_heads.
  70 */
  71struct ocfs2_xattr_value_buf {
  72        struct buffer_head              *vb_bh;
  73        ocfs2_journal_access_func       vb_access;
  74        struct ocfs2_xattr_value_root   *vb_xv;
  75};
  76
  77int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
  78                                     struct buffer_head *fe_bh,
  79                                     struct ocfs2_caching_info *ref_ci,
  80                                     struct buffer_head *ref_root_bh,
  81                                     struct ocfs2_cached_dealloc_ctxt *dealloc);
  82int ocfs2_reflink_xattrs(struct inode *old_inode,
  83                         struct buffer_head *old_bh,
  84                         struct inode *new_inode,
  85                         struct buffer_head *new_bh,
  86                         bool preserve_security);
  87int ocfs2_init_security_and_acl(struct inode *dir,
  88                                struct inode *inode,
  89                                const struct qstr *qstr);
  90#endif /* OCFS2_XATTR_H */
  91