LXR linux/fs/ocfs2/xattr.h

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