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	1	/*
	2	* Copyright (c) 2004-2010 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
	29	#ifndef _SYS_XATTR_H_
	30	#define _SYS_XATTR_H_
	31
	32	#include <sys/types.h>
	33
	34	/* Options for pathname based xattr calls */
	35	#define XATTR_NOFOLLOW 0x0001 /* Don't follow symbolic links */
	36
	37	/* Options for setxattr calls */
	38	#define XATTR_CREATE 0x0002 /* set the value, fail if attr already exists */
	39	#define XATTR_REPLACE 0x0004 /* set the value, fail if attr does not exist */
	40
	41	/* Set this to bypass authorization checking (eg. if doing auth-related work) */
	42	#define XATTR_NOSECURITY 0x0008
	43
	44	/* Set this to bypass the default extended attribute file (dot-underscore file) */
	45	#define XATTR_NODEFAULT 0x0010
	46
	47	/* option for f/getxattr() and f/listxattr() to expose the HFS Compression extended attributes */
	48	#define XATTR_SHOWCOMPRESSION 0x0020
	49
	50	#define XATTR_MAXNAMELEN 127
	51
	52	#define XATTR_FINDERINFO_NAME "com.apple.FinderInfo"
	53
	54	#define XATTR_RESOURCEFORK_NAME "com.apple.ResourceFork"
	55
	56
	57	#ifdef KERNEL
	58	__BEGIN_DECLS
	59	int xattr_protected(const char *);
	60	int xattr_validatename(const char *);
	61
	62	/* Maximum extended attribute size supported by VFS */
	63	#define XATTR_MAXSIZE (64 * 1024 * 1024)
	64
	65	#ifdef PRIVATE
	66	/* Maximum extended attribute size in an Apple Double file */
	67	#define AD_XATTR_MAXSIZE (128 * 1024)
	68
	69	/* Number of bits used to represent the maximum size of
	70	* extended attribute stored in an Apple Double file.
	71	*/
	72	#define AD_XATTR_SIZE_BITS 18
	73	#endif /* PRIVATE */
	74
	75	__END_DECLS
	76	#endif /* KERNEL */
	77
	78	#ifndef KERNEL
	79	__BEGIN_DECLS
	80
	81	ssize_t getxattr(const char path, const char name, void *value, size_t size, u_int32_t position, int options);
	82
	83	ssize_t fgetxattr(int fd, const char name, void value, size_t size, u_int32_t position, int options);
	84
	85	int setxattr(const char path, const char name, const void *value, size_t size, u_int32_t position, int options);
	86
	87	int fsetxattr(int fd, const char name, const void value, size_t size, u_int32_t position, int options);
	88
	89	int removexattr(const char path, const char name, int options);
	90
	91	int fremovexattr(int fd, const char *name, int options);
	92
	93	ssize_t listxattr(const char path, char namebuff, size_t size, int options);
	94
	95	ssize_t flistxattr(int fd, char *namebuff, size_t size, int options);
	96
	97	__END_DECLS
	98	#endif /* KERNEL */
	99
	100	#endif /* _SYS_XATTR_H_ */