1 /* -*- mode: c; c-basic-offset: 8; -*- 2 * vim: noexpandtab sw=8 ts=8 sts=0: 3 * 4 * xattr.h 5 * 6 * Copyright (C) 2004, 2008 Oracle. All rights reserved. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public 10 * License version 2 as published by the Free Software Foundation. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 */ 17 18 #ifndef OCFS2_XATTR_H 19 #define OCFS2_XATTR_H 20 21 #include <linux/init.h> 22 #include <linux/xattr.h> 23 24 enum ocfs2_xattr_type { 25 OCFS2_XATTR_INDEX_USER = 1, 26 OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS, 27 OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT, 28 OCFS2_XATTR_INDEX_TRUSTED, 29 OCFS2_XATTR_INDEX_SECURITY, 30 OCFS2_XATTR_MAX 31 }; 32 33 struct ocfs2_security_xattr_info { 34 int enable; 35 const char *name; 36 void *value; 37 size_t value_len; 38 }; 39 40 extern const struct xattr_handler ocfs2_xattr_user_handler; 41 extern const struct xattr_handler ocfs2_xattr_trusted_handler; 42 extern const struct xattr_handler ocfs2_xattr_security_handler; 43 extern const struct xattr_handler ocfs2_xattr_acl_access_handler; 44 extern const struct xattr_handler ocfs2_xattr_acl_default_handler; 45 extern const struct xattr_handler *ocfs2_xattr_handlers[]; 46 47 ssize_t ocfs2_listxattr(struct dentry *, char *, size_t); 48 int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int, 49 const char *, void *, size_t); 50 int ocfs2_xattr_set(struct inode *, int, const char *, const void *, 51 size_t, int); 52 int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *, 53 int, const char *, const void *, size_t, int, 54 struct ocfs2_alloc_context *, 55 struct ocfs2_alloc_context *); 56 int ocfs2_has_inline_xattr_value_outside(struct inode *inode, 57 struct ocfs2_dinode *di); 58 int ocfs2_xattr_remove(struct inode *, struct buffer_head *); 59 int ocfs2_init_security_get(struct inode *, struct inode *, 60 const struct qstr *, 61 struct ocfs2_security_xattr_info *); 62 int ocfs2_init_security_set(handle_t *, struct inode *, 63 struct buffer_head *, 64 struct ocfs2_security_xattr_info *, 65 struct ocfs2_alloc_context *, 66 struct ocfs2_alloc_context *); 67 int ocfs2_calc_security_init(struct inode *, 68 struct ocfs2_security_xattr_info *, 69 int *, int *, struct ocfs2_alloc_context **); 70 int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *, 71 umode_t, struct ocfs2_security_xattr_info *, 72 int *, int *, int *); 73 74 /* 75 * xattrs can live inside an inode, as part of an external xattr block, 76 * or inside an xattr bucket, which is the leaf of a tree rooted in an 77 * xattr block. Some of the xattr calls, especially the value setting 78 * functions, want to treat each of these locations as equal. Let's wrap 79 * them in a structure that we can pass around instead of raw buffer_heads. 80 */ 81 struct ocfs2_xattr_value_buf { 82 struct buffer_head *vb_bh; 83 ocfs2_journal_access_func vb_access; 84 struct ocfs2_xattr_value_root *vb_xv; 85 }; 86 87 int ocfs2_xattr_attach_refcount_tree(struct inode *inode, 88 struct buffer_head *fe_bh, 89 struct ocfs2_caching_info *ref_ci, 90 struct buffer_head *ref_root_bh, 91 struct ocfs2_cached_dealloc_ctxt *dealloc); 92 int ocfs2_reflink_xattrs(struct inode *old_inode, 93 struct buffer_head *old_bh, 94 struct inode *new_inode, 95 struct buffer_head *new_bh, 96 bool preserve_security); 97 int ocfs2_init_security_and_acl(struct inode *dir, 98 struct inode *inode, 99 const struct qstr *qstr); 100 #endif /* OCFS2_XATTR_H */ 101