[linux-2.6-block.git] / fs / ocfs2 / xattr.h

/* SPDX-License-Identifier: GPL-2.0-only */
/* -*- mode: c; c-basic-offset: 8; -*-
 * vim: noexpandtab sw=8 ts=8 sts=0:
 *
 * xattr.h
 *
 * Copyright (C) 2004, 2008 Oracle.  All rights reserved.
 */

#ifndef OCFS2_XATTR_H
#define OCFS2_XATTR_H

#include <linux/init.h>
#include <linux/xattr.h>

enum ocfs2_xattr_type {
	OCFS2_XATTR_INDEX_USER = 1,
	OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS,
	OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT,
	OCFS2_XATTR_INDEX_TRUSTED,
	OCFS2_XATTR_INDEX_SECURITY,
	OCFS2_XATTR_MAX
};

struct ocfs2_security_xattr_info {
	int enable;
	const char *name;
	void *value;
	size_t value_len;
};

extern const struct xattr_handler ocfs2_xattr_user_handler;
extern const struct xattr_handler ocfs2_xattr_trusted_handler;
extern const struct xattr_handler ocfs2_xattr_security_handler;
extern const struct xattr_handler *ocfs2_xattr_handlers[];

ssize_t ocfs2_listxattr(struct dentry *, char *, size_t);
int ocfs2_xattr_get_nolock(struct inode *, struct buffer_head *, int,
			   const char *, void *, size_t);
int ocfs2_xattr_set(struct inode *, int, const char *, const void *,
		    size_t, int);
int ocfs2_xattr_set_handle(handle_t *, struct inode *, struct buffer_head *,
			   int, const char *, const void *, size_t, int,
			   struct ocfs2_alloc_context *,
			   struct ocfs2_alloc_context *);
int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
					 struct ocfs2_dinode *di);
int ocfs2_xattr_remove(struct inode *, struct buffer_head *);
int ocfs2_init_security_get(struct inode *, struct inode *,
			    const struct qstr *,
			    struct ocfs2_security_xattr_info *);
int ocfs2_init_security_set(handle_t *, struct inode *,
			    struct buffer_head *,
			    struct ocfs2_security_xattr_info *,
			    struct ocfs2_alloc_context *,
			    struct ocfs2_alloc_context *);
int ocfs2_calc_security_init(struct inode *,
			     struct ocfs2_security_xattr_info *,
			     int *, int *, struct ocfs2_alloc_context **);
int ocfs2_calc_xattr_init(struct inode *, struct buffer_head *,
			  umode_t, struct ocfs2_security_xattr_info *,
			  int *, int *, int *);

/*
 * xattrs can live inside an inode, as part of an external xattr block,
 * or inside an xattr bucket, which is the leaf of a tree rooted in an
 * xattr block.  Some of the xattr calls, especially the value setting
 * functions, want to treat each of these locations as equal.  Let's wrap
 * them in a structure that we can pass around instead of raw buffer_heads.
 */
struct ocfs2_xattr_value_buf {
	struct buffer_head		*vb_bh;
	ocfs2_journal_access_func	vb_access;
	struct ocfs2_xattr_value_root	*vb_xv;
};

int ocfs2_xattr_attach_refcount_tree(struct inode *inode,
				     struct buffer_head *fe_bh,
				     struct ocfs2_caching_info *ref_ci,
				     struct buffer_head *ref_root_bh,
				     struct ocfs2_cached_dealloc_ctxt *dealloc);
int ocfs2_reflink_xattrs(struct inode *old_inode,
			 struct buffer_head *old_bh,
			 struct inode *new_inode,
			 struct buffer_head *new_bh,
			 bool preserve_security);
int ocfs2_init_security_and_acl(struct inode *dir,
				struct inode *inode,
				const struct qstr *qstr);
#endif /* OCFS2_XATTR_H */
Commit	Line	Data
1802d0be	1	/* SPDX-License-Identifier: GPL-2.0-only */
cf1d6c76 TY	2	/* -- mode: c; c-basic-offset: 8; --
	3	* vim: noexpandtab sw=8 ts=8 sts=0:
	4	*
	5	* xattr.h
	6	*
c3cb6827	7	* Copyright (C) 2004, 2008 Oracle. All rights reserved.
cf1d6c76 TY	8	*/
	9
	10	#ifndef OCFS2_XATTR_H
	11	#define OCFS2_XATTR_H
	12
	13	#include <linux/init.h>
	14	#include <linux/xattr.h>
	15
	16	enum 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
534eaddd TY	25	struct ocfs2_security_xattr_info {
534eaddd TY	26	int enable;
9548906b	27	const char *name;
534eaddd TY	28	void *value;
	29	size_t value_len;
	30	};
	31
537d81ca SH	32	extern const struct xattr_handler ocfs2_xattr_user_handler;
	33	extern const struct xattr_handler ocfs2_xattr_trusted_handler;
	34	extern const struct xattr_handler ocfs2_xattr_security_handler;
537d81ca	35	extern const struct xattr_handler *ocfs2_xattr_handlers[];
cf1d6c76	36
0030e001	37	ssize_t ocfs2_listxattr(struct dentry , char , size_t);
4e3e9d02 TY	38	int ocfs2_xattr_get_nolock(struct inode , struct buffer_head , int,
4e3e9d02 TY	39	const char , void , size_t);
0030e001 TY	40	int ocfs2_xattr_set(struct inode , int, const char , const void *,
0030e001 TY	41	size_t, int);
6c3faba4 TY	42	int 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 *);
8b2c0dba TM	46	int ocfs2_has_inline_xattr_value_outside(struct inode *inode,
8b2c0dba TM	47	struct ocfs2_dinode *di);
0030e001	48	int ocfs2_xattr_remove(struct inode , struct buffer_head );
534eaddd	49	int ocfs2_init_security_get(struct inode , struct inode ,
2a7dba39	50	const struct qstr *,
534eaddd TY	51	struct ocfs2_security_xattr_info *);
	52	int 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 *);
	57	int ocfs2_calc_security_init(struct inode *,
	58	struct ocfs2_security_xattr_info *,
	59	int , int , struct ocfs2_alloc_context **);
89c38bd0	60	int ocfs2_calc_xattr_init(struct inode , struct buffer_head ,
67697cbd	61	umode_t, struct ocfs2_security_xattr_info *,
9b7895ef	62	int , int , int *);
01225596	63
2a50a743 JB	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	*/
	71	struct 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
0129241e TM	77	int 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);
2999d12f TM	82	int ocfs2_reflink_xattrs(struct inode *old_inode,
	83	struct buffer_head *old_bh,
	84	struct inode *new_inode,
0fe9b66c TM	85	struct buffer_head *new_bh,
	86	bool preserve_security);
	87	int ocfs2_init_security_and_acl(struct inode *dir,
2a7dba39	88	struct inode *inode,
c25a1e06	89	const struct qstr *qstr);
cf1d6c76	90	#endif /* OCFS2_XATTR_H */