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 char *name; 36 void *value; 37 size_t value_len; 38 }; 39 40 extern struct xattr_handler ocfs2_xattr_user_handler; 41 extern struct xattr_handler ocfs2_xattr_trusted_handler; 42 extern struct xattr_handler ocfs2_xattr_security_handler; 43 #ifdef CONFIG_OCFS2_FS_POSIX_ACL 44 extern struct xattr_handler ocfs2_xattr_acl_access_handler; 45 extern struct xattr_handler ocfs2_xattr_acl_default_handler; 46 #endif 47 extern struct xattr_handler *ocfs2_xattr_handlers[]; 48 49 ssize_t ocfs2_listxattr(struct dentry *, char *, size_t); 50 int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int, 51 const char *, void *, size_t); 52 int ocfs2_xattr_set(struct inode *, int, const char *, const void *, 53 size_t, int); 54 int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *, 55 int, const char *, const void *, size_t, int, 56 struct ocfs2_alloc_context *, 57 struct ocfs2_alloc_context *); 58 int ocfs2_has_inline_xattr_value_outside(struct inode *inode, 59 struct ocfs2_dinode *di); 60 int ocfs2_xattr_remove(struct inode *, struct buffer_head *); 61 int ocfs2_init_security_get(struct inode *, struct inode *, 62 struct ocfs2_security_xattr_info *); 63 int ocfs2_init_security_set(handle_t *, struct inode *, 64 struct buffer_head *, 65 struct ocfs2_security_xattr_info *, 66 struct ocfs2_alloc_context *, 67 struct ocfs2_alloc_context *); 68 int ocfs2_calc_security_init(struct inode *, 69 struct ocfs2_security_xattr_info *, 70 int *, int *, struct ocfs2_alloc_context **); 71 int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *, 72 int, struct ocfs2_security_xattr_info *, 73 int *, int *, int *); 74 75 /* 76 * xattrs can live inside an inode, as part of an external xattr block, 77 * or inside an xattr bucket, which is the leaf of a tree rooted in an 78 * xattr block. Some of the xattr calls, especially the value setting 79 * functions, want to treat each of these locations as equal. Let's wrap 80 * them in a structure that we can pass around instead of raw buffer_heads. 81 */ 82 struct ocfs2_xattr_value_buf { 83 struct buffer_head *vb_bh; 84 ocfs2_journal_access_func vb_access; 85 struct ocfs2_xattr_value_root *vb_xv; 86 }; 87 88 int ocfs2_xattr_attach_refcount_tree(struct inode *inode, 89 struct buffer_head *fe_bh, 90 struct ocfs2_caching_info *ref_ci, 91 struct buffer_head *ref_root_bh, 92 struct ocfs2_cached_dealloc_ctxt *dealloc); 93 int ocfs2_reflink_xattrs(struct inode *old_inode, 94 struct buffer_head *old_bh, 95 struct inode *new_inode, 96 struct buffer_head *new_bh, 97 bool preserve_security); 98 int ocfs2_init_security_and_acl(struct inode *dir, 99 struct inode *inode); 100 #endif /* OCFS2_XATTR_H */ 101