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 14 enum 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 23 struct ocfs2_security_xattr { 24 char *name; 25 void *value; 26 size_t value_len; 27 }; 28 29 struct ocfs2_security_xattr_info { 30 int enable; 31 struct ocfs2_security_xattr *xattrs; 32 int count; 33 }; 34 35 extern const struct xattr_handler ocfs2_xattr_user_handler; 36 extern const struct xattr_handler ocfs2_xattr_trusted_handler; 37 extern const struct xattr_handler ocfs2_xattr_security_handler; 38 extern const struct xattr_handler * const ocfs2_xattr_handlers[]; 39 40 ssize_t ocfs2_listxattr(struct dentry *, char *, size_t); 41 int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int, 42 const char *, void *, size_t); 43 int ocfs2_xattr_set(struct inode *, int, const char *, const void *, 44 size_t, int); 45 int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *, 46 int, const char *, const void *, size_t, int, 47 struct ocfs2_alloc_context *, 48 struct ocfs2_alloc_context *); 49 int ocfs2_has_inline_xattr_value_outside(struct inode *inode, 50 struct ocfs2_dinode *di); 51 int ocfs2_validate_inode_xattr(struct super_block *sb, u64 blkno, 52 struct ocfs2_dinode *di); 53 int ocfs2_xattr_remove(struct inode *, struct buffer_head *); 54 int ocfs2_init_security_get(struct inode *, struct inode *, 55 const struct qstr *, 56 struct ocfs2_security_xattr_info *); 57 void ocfs2_free_security_xattrs(struct ocfs2_security_xattr_info *); 58 int ocfs2_init_security_set(handle_t *, struct inode *, 59 struct buffer_head *, 60 struct ocfs2_security_xattr_info *, 61 struct ocfs2_alloc_context *, 62 struct ocfs2_alloc_context *); 63 int ocfs2_calc_security_init(struct inode *, 64 struct ocfs2_security_xattr_info *, 65 int *, int *, struct ocfs2_alloc_context **); 66 67 struct ocfs2_acl_state; 68 void ocfs2_calc_xattr_init(struct inode *dir, umode_t mode, 69 struct ocfs2_security_xattr_info *si, 70 int *want_clusters, int *xattr_credits, 71 int *want_meta, struct ocfs2_acl_state *acl_state); 72 73 /* 74 * xattrs can live inside an inode, as part of an external xattr block, 75 * or inside an xattr bucket, which is the leaf of a tree rooted in an 76 * xattr block. Some of the xattr calls, especially the value setting 77 * functions, want to treat each of these locations as equal. Let's wrap 78 * them in a structure that we can pass around instead of raw buffer_heads. 79 */ 80 struct ocfs2_xattr_value_buf { 81 struct buffer_head *vb_bh; 82 ocfs2_journal_access_func vb_access; 83 struct ocfs2_xattr_value_root *vb_xv; 84 }; 85 86 int ocfs2_xattr_attach_refcount_tree(struct inode *inode, 87 struct buffer_head *fe_bh, 88 struct ocfs2_caching_info *ref_ci, 89 struct buffer_head *ref_root_bh, 90 struct ocfs2_cached_dealloc_ctxt *dealloc); 91 int ocfs2_reflink_xattrs(struct inode *old_inode, 92 struct buffer_head *old_bh, 93 struct inode *new_inode, 94 struct buffer_head *new_bh, 95 bool preserve_security); 96 int ocfs2_init_security_and_acl(struct inode *dir, 97 struct inode *inode, 98 const struct qstr *qstr); 99 #endif /* OCFS2_XATTR_H */ 100