[apple/xnu.git] / bsd / sys / attr.h

/*
 * Copyright (c) 2000-2010 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

/*
 * attr.h - attribute data structures and interfaces
 *
 * Copyright (c) 1998, Apple Computer, Inc.  All Rights Reserved.
 */

#ifndef _SYS_ATTR_H_
#define _SYS_ATTR_H_

#include <sys/appleapiopts.h>

#ifdef __APPLE_API_UNSTABLE
#include <sys/types.h>
#include <sys/ucred.h>
#include <sys/time.h>
#include <sys/cdefs.h>

#define FSOPT_NOFOLLOW          0x00000001
#define FSOPT_NOINMEMUPDATE     0x00000002
#define FSOPT_REPORT_FULLSIZE   0x00000004
/* The following option only valid when requesting ATTR_CMN_RETURNED_ATTRS */
#define FSOPT_PACK_INVAL_ATTRS  0x00000008

#ifdef PRIVATE
#define FSOPT_EXCHANGE_DATA_ONLY 0x0000010
#endif

#define FSOPT_ATTR_CMN_EXTENDED 0x00000020

/* we currently aren't anywhere near this amount for a valid
 * fssearchblock.sizeofsearchparams1 or fssearchblock.sizeofsearchparams2
 * but we put a sanity check in to avoid abuse of the value passed in from
 * user land.
 */
#define SEARCHFS_MAX_SEARCHPARMS  4096

typedef u_int32_t text_encoding_t;

typedef u_int32_t fsobj_type_t;

typedef u_int32_t fsobj_tag_t;

typedef u_int32_t fsfile_type_t;

typedef u_int32_t fsvolid_t;

typedef struct fsobj_id {
        u_int32_t               fid_objno;
        u_int32_t               fid_generation;
} fsobj_id_t;

typedef u_int32_t attrgroup_t;

struct attrlist {
        u_short bitmapcount;                    /* number of attr. bit sets in list (should be 5) */
        u_int16_t reserved;                     /* (to maintain 4-byte alignment) */
        attrgroup_t commonattr;                 /* common attribute group */
        attrgroup_t volattr;                    /* Volume attribute group */
        attrgroup_t dirattr;                    /* directory attribute group */
        attrgroup_t fileattr;                   /* file attribute group */
        attrgroup_t forkattr;                   /* fork attribute group */
};
#define ATTR_BIT_MAP_COUNT 5

typedef struct attribute_set {
        attrgroup_t commonattr;                 /* common attribute group */
        attrgroup_t volattr;                    /* Volume attribute group */
        attrgroup_t dirattr;                    /* directory attribute group */
        attrgroup_t fileattr;                   /* file attribute group */
        attrgroup_t forkattr;                   /* fork attribute group */
} attribute_set_t;

typedef struct attrreference {
        int32_t     attr_dataoffset;
        u_int32_t   attr_length;
} attrreference_t;

/* XXX PPD This is derived from HFSVolumePriv.h and should perhaps be referenced from there? */

struct diskextent {
        u_int32_t                                       startblock;                             /* first block allocated */
        u_int32_t                                       blockcount;                             /* number of blocks allocated */
};

typedef struct diskextent extentrecord[8];

typedef u_int32_t vol_capabilities_set_t[4];

#define VOL_CAPABILITIES_FORMAT 0
#define VOL_CAPABILITIES_INTERFACES 1
#define VOL_CAPABILITIES_RESERVED1 2
#define VOL_CAPABILITIES_RESERVED2 3

typedef struct vol_capabilities_attr {
        vol_capabilities_set_t capabilities;
        vol_capabilities_set_t valid;
} vol_capabilities_attr_t;

/*
 * XXX this value needs to be raised - 3893388
 */
#define ATTR_MAX_BUFFER         8192

/*
 * VOL_CAP_FMT_PERSISTENTOBJECTIDS: When set, the volume has object IDs
 * that are persistent (retain their values even when the volume is
 * unmounted and remounted), and a file or directory can be looked up
 * by ID.  Volumes that support VolFS and can support Carbon File ID
 * references should set this bit.
 *
 * VOL_CAP_FMT_SYMBOLICLINKS: When set, the volume supports symbolic
 * links.  The symlink(), readlink(), and lstat() calls all use this
 * symbolic link.
 *
 * VOL_CAP_FMT_HARDLINKS: When set, the volume supports hard links.
 * The link() call creates hard links.
 *
 * VOL_CAP_FMT_JOURNAL: When set, the volume is capable of supporting
 * a journal used to speed recovery in case of unplanned shutdown
 * (such as a power outage or crash).  This bit does not necessarily
 * mean the volume is actively using a journal for recovery.
 *
 * VOL_CAP_FMT_JOURNAL_ACTIVE: When set, the volume is currently using
 * a journal for use in speeding recovery after an unplanned shutdown.
 * This bit can be set only if VOL_CAP_FMT_JOURNAL is also set.
 *
 * VOL_CAP_FMT_NO_ROOT_TIMES: When set, the volume format does not
 * store reliable times for the root directory, so you should not
 * depend on them to detect changes, etc.
 *
 * VOL_CAP_FMT_SPARSE_FILES: When set, the volume supports sparse files.
 * That is, files which can have "holes" that have never been written
 * to, and are not allocated on disk.  Sparse files may have an
 * allocated size that is less than the file's logical length.
 *
 * VOL_CAP_FMT_ZERO_RUNS: For security reasons, parts of a file (runs)
 * that have never been written to must appear to contain zeroes.  When
 * this bit is set, the volume keeps track of allocated but unwritten
 * runs of a file so that it can substitute zeroes without actually
 * writing zeroes to the media.  This provides performance similar to
 * sparse files, but not the space savings.
 *
 * VOL_CAP_FMT_CASE_SENSITIVE: When set, file and directory names are
 * case sensitive (upper and lower case are different).  When clear,
 * an upper case character is equivalent to a lower case character,
 * and you can't have two names that differ solely in the case of
 * the characters.
 *
 * VOL_CAP_FMT_CASE_PRESERVING: When set, file and directory names
 * preserve the difference between upper and lower case.  If clear,
 * the volume may change the case of some characters (typically
 * making them all upper or all lower case).  A volume that sets
 * VOL_CAP_FMT_CASE_SENSITIVE should also set VOL_CAP_FMT_CASE_PRESERVING.
 *
 * VOL_CAP_FMT_FAST_STATFS: This bit is used as a hint to upper layers
 * (especially Carbon) that statfs() is fast enough that its results
 * need not be cached by those upper layers.  A volume that caches
 * the statfs information in its in-memory structures should set this bit.
 * A volume that must always read from disk or always perform a network
 * transaction should not set this bit.  
 * 
 * VOL_CAP_FMT_2TB_FILESIZE: If this bit is set the volume format supports
 * file sizes larger than 4GB, and potentially up to 2TB; it does not
 * indicate whether the filesystem supports files larger than that.
 *
 * VOL_CAP_FMT_OPENDENYMODES: When set, the volume supports open deny
 * modes (e.g. "open for read write, deny write"; effectively, mandatory
 * file locking based on open modes).
 *
 * VOL_CAP_FMT_HIDDEN_FILES: When set, the volume supports the UF_HIDDEN
 * file flag, and the UF_HIDDEN flag is mapped to that volume's native
 * "hidden" or "invisible" bit (which may be the invisible bit from the
 * Finder Info extended attribute).
 *
 * VOL_CAP_FMT_PATH_FROM_ID:  When set, the volume supports the ability
 * to derive a pathname to the root of the file system given only the
 * id of an object.  This also implies that object ids on this file
 * system are persistent and not recycled.  This is a very specialized
 * capability and it is assumed that most file systems will not support
 * it.  Its use is for legacy non-posix APIs like ResolveFileIDRef.
 * 
 * VOL_CAP_FMT_NO_VOLUME_SIZES: When set, the volume does not support 
 * returning values for total data blocks, available blocks, or free blocks
 * (as in f_blocks, f_bavail, or f_bfree in "struct statfs").  Historically,
 * those values were set to 0xFFFFFFFF for volumes that did not support them.
 * 
 * VOL_CAP_FMT_DECMPFS_COMPRESSION: When set, the volume supports transparent
 * decompression of compressed files using decmpfs.
 *
 * VOL_CAP_FMT_64BIT_OBJECT_IDS: When set, the volume uses object IDs that
 * are 64-bit. This means that ATTR_CMN_FILEID and ATTR_CMN_PARENTID are the
 * only legitimate attributes for obtaining object IDs from this volume and the
 * 32-bit fid_objno fields of the fsobj_id_t returned by ATTR_CMN_OBJID,
 * ATTR_CMN_OBJPERMID, and ATTR_CMN_PAROBJID are undefined.
 */
#define VOL_CAP_FMT_PERSISTENTOBJECTIDS         0x00000001
#define VOL_CAP_FMT_SYMBOLICLINKS               0x00000002
#define VOL_CAP_FMT_HARDLINKS                   0x00000004
#define VOL_CAP_FMT_JOURNAL                     0x00000008
#define VOL_CAP_FMT_JOURNAL_ACTIVE              0x00000010
#define VOL_CAP_FMT_NO_ROOT_TIMES               0x00000020
#define VOL_CAP_FMT_SPARSE_FILES                0x00000040
#define VOL_CAP_FMT_ZERO_RUNS                   0x00000080
#define VOL_CAP_FMT_CASE_SENSITIVE              0x00000100
#define VOL_CAP_FMT_CASE_PRESERVING             0x00000200
#define VOL_CAP_FMT_FAST_STATFS                 0x00000400
#define VOL_CAP_FMT_2TB_FILESIZE                0x00000800
#define VOL_CAP_FMT_OPENDENYMODES               0x00001000
#define VOL_CAP_FMT_HIDDEN_FILES                0x00002000
#define VOL_CAP_FMT_PATH_FROM_ID                0x00004000
#define VOL_CAP_FMT_NO_VOLUME_SIZES             0x00008000
#define VOL_CAP_FMT_DECMPFS_COMPRESSION         0x00010000
#define VOL_CAP_FMT_64BIT_OBJECT_IDS            0x00020000


/*
 * VOL_CAP_INT_SEARCHFS: When set, the volume implements the
 * searchfs() system call (the vnop_searchfs vnode operation).
 *
 * VOL_CAP_INT_ATTRLIST: When set, the volume implements the
 * getattrlist() and setattrlist() system calls (vnop_getattrlist
 * and vnop_setattrlist vnode operations) for the volume, files,
 * and directories.  The volume may or may not implement the
 * readdirattr() system call.  XXX Is there any minimum set
 * of attributes that should be supported?  To determine the
 * set of supported attributes, get the ATTR_VOL_ATTRIBUTES
 * attribute of the volume.
 *
 * VOL_CAP_INT_NFSEXPORT: When set, the volume implements exporting
 * of NFS volumes.
 *
 * VOL_CAP_INT_READDIRATTR: When set, the volume implements the
 * readdirattr() system call (vnop_readdirattr vnode operation).
 *
 * VOL_CAP_INT_EXCHANGEDATA: When set, the volume implements the
 * exchangedata() system call (VNOP_EXCHANGE vnode operation).
 *
 * VOL_CAP_INT_COPYFILE: When set, the volume implements the
 * VOP_COPYFILE vnode operation.  (XXX There should be a copyfile()
 * system call in <unistd.h>.)
 *
 * VOL_CAP_INT_ALLOCATE: When set, the volume implements the
 * VNOP_ALLOCATE vnode operation, which means it implements the
 * F_PREALLOCATE selector of fcntl(2).
 *
 * VOL_CAP_INT_VOL_RENAME: When set, the volume implements the
 * ATTR_VOL_NAME attribute for both getattrlist() and setattrlist().
 * The volume can be renamed by setting ATTR_VOL_NAME with setattrlist().
 *
 * VOL_CAP_INT_ADVLOCK: When set, the volume implements POSIX style
 * byte range locks via vnop_advlock (accessible from fcntl(2)).
 *
 * VOL_CAP_INT_FLOCK: When set, the volume implements whole-file flock(2)
 * style locks via vnop_advlock.  This includes the O_EXLOCK and O_SHLOCK
 * flags of the open(2) call.
 *
 * VOL_CAP_INT_EXTENDED_SECURITY: When set, the volume implements
 * extended security (ACLs).
 *
 * VOL_CAP_INT_USERACCESS:  When set, the volume supports the
 * ATTR_CMN_USERACCESS attribute (used to get the user's access
 * mode to the file).
 *
 * VOL_CAP_INT_MANLOCK: When set, the volume supports AFP-style
 * mandatory byte range locks via an ioctl().
 *
 * VOL_CAP_INT_EXTENDED_ATTR: When set, the volume implements
 * native extended attribues.
 *
 * VOL_CAP_INT_NAMEDSTREAMS: When set, the volume supports
 * native named streams.
 */
#define VOL_CAP_INT_SEARCHFS                    0x00000001
#define VOL_CAP_INT_ATTRLIST                    0x00000002
#define VOL_CAP_INT_NFSEXPORT                   0x00000004
#define VOL_CAP_INT_READDIRATTR                 0x00000008
#define VOL_CAP_INT_EXCHANGEDATA                0x00000010
#define VOL_CAP_INT_COPYFILE                    0x00000020
#define VOL_CAP_INT_ALLOCATE                    0x00000040
#define VOL_CAP_INT_VOL_RENAME                  0x00000080
#define VOL_CAP_INT_ADVLOCK                     0x00000100
#define VOL_CAP_INT_FLOCK                       0x00000200
#define VOL_CAP_INT_EXTENDED_SECURITY           0x00000400
#define VOL_CAP_INT_USERACCESS                  0x00000800
#define VOL_CAP_INT_MANLOCK                     0x00001000
#define VOL_CAP_INT_NAMEDSTREAMS                0x00002000
#define VOL_CAP_INT_EXTENDED_ATTR               0x00004000
#ifdef PRIVATE
/* Volume supports kqueue notifications for remote events */
#define VOL_CAP_INT_REMOTE_EVENT                0x00008000
#endif /* PRIVATE */

typedef struct vol_attributes_attr {
        attribute_set_t validattr;
        attribute_set_t nativeattr;
} vol_attributes_attr_t;

#define ATTR_CMN_NAME                           0x00000001
#define ATTR_CMN_DEVID                          0x00000002
#define ATTR_CMN_FSID                           0x00000004
#define ATTR_CMN_OBJTYPE                        0x00000008
#define ATTR_CMN_OBJTAG                         0x00000010
#define ATTR_CMN_OBJID                          0x00000020
#define ATTR_CMN_OBJPERMANENTID                 0x00000040
#define ATTR_CMN_PAROBJID                       0x00000080
#define ATTR_CMN_SCRIPT                         0x00000100
#define ATTR_CMN_CRTIME                         0x00000200
#define ATTR_CMN_MODTIME                        0x00000400
#define ATTR_CMN_CHGTIME                        0x00000800
#define ATTR_CMN_ACCTIME                        0x00001000
#define ATTR_CMN_BKUPTIME                       0x00002000
#define ATTR_CMN_FNDRINFO                       0x00004000
#define ATTR_CMN_OWNERID                        0x00008000
#define ATTR_CMN_GRPID                          0x00010000
#define ATTR_CMN_ACCESSMASK                     0x00020000
#define ATTR_CMN_FLAGS                          0x00040000

/* The following were defined as:                               */
/*      #define ATTR_CMN_NAMEDATTRCOUNT         0x00080000      */
/*      #define ATTR_CMN_NAMEDATTRLIST          0x00100000      */
/* These bits have been salvaged for use as:                    */
/*      #define ATTR_CMN_GEN_COUNT              0x00080000      */
/*      #define ATTR_CMN_DOCUMENT_ID            0x00100000      */
/* They can only be used with the  FSOPT_ATTR_CMN_EXTENDED      */
/* option flag.                                                 */

#define ATTR_CMN_GEN_COUNT                      0x00080000
#define ATTR_CMN_DOCUMENT_ID                    0x00100000

#define ATTR_CMN_USERACCESS                     0x00200000
#define ATTR_CMN_EXTENDED_SECURITY              0x00400000
#define ATTR_CMN_UUID                           0x00800000
#define ATTR_CMN_GRPUUID                        0x01000000
#define ATTR_CMN_FILEID                         0x02000000
#define ATTR_CMN_PARENTID                       0x04000000
#define ATTR_CMN_FULLPATH                       0x08000000
#define ATTR_CMN_ADDEDTIME                      0x10000000
#define ATTR_CMN_ERROR                          0x20000000
#define ATTR_CMN_DATA_PROTECT_FLAGS             0x40000000

/*
 * ATTR_CMN_RETURNED_ATTRS is only valid with getattrlist(2) and
 * getattrlistbulk(2). It is always the first attribute in the return buffer.
 */
#define ATTR_CMN_RETURNED_ATTRS                 0x80000000      

#define ATTR_CMN_VALIDMASK                      0xFFFFFFFF
/*
 * The settable ATTR_CMN_* attributes include the following:
 * ATTR_CMN_SCRIPT
 * ATTR_CMN_CRTIME
 * ATTR_CMN_MODTIME
 * ATTR_CMN_CHGTIME
 * 
 * ATTR_CMN_ACCTIME
 * ATTR_CMN_BKUPTIME
 * ATTR_CMN_FNDRINFO
 * ATTR_CMN_OWNERID
 * 
 * ATTR_CMN_GRPID
 * ATTR_CMN_ACCESSMASK
 * ATTR_CMN_FLAGS
 * 
 * ATTR_CMN_EXTENDED_SECURITY
 * ATTR_CMN_UUID
 * 
 * ATTR_CMN_GRPUUID
 */
#define ATTR_CMN_SETMASK                        0x01C7FF00
#define ATTR_CMN_VOLSETMASK                     0x00006700

#define ATTR_VOL_FSTYPE                         0x00000001
#define ATTR_VOL_SIGNATURE                      0x00000002
#define ATTR_VOL_SIZE                           0x00000004
#define ATTR_VOL_SPACEFREE                      0x00000008
#define ATTR_VOL_SPACEAVAIL                     0x00000010
#define ATTR_VOL_MINALLOCATION                  0x00000020
#define ATTR_VOL_ALLOCATIONCLUMP                0x00000040
#define ATTR_VOL_IOBLOCKSIZE                    0x00000080
#define ATTR_VOL_OBJCOUNT                       0x00000100
#define ATTR_VOL_FILECOUNT                      0x00000200
#define ATTR_VOL_DIRCOUNT                       0x00000400
#define ATTR_VOL_MAXOBJCOUNT                    0x00000800
#define ATTR_VOL_MOUNTPOINT                     0x00001000
#define ATTR_VOL_NAME                           0x00002000
#define ATTR_VOL_MOUNTFLAGS                     0x00004000
#define ATTR_VOL_MOUNTEDDEVICE                  0x00008000
#define ATTR_VOL_ENCODINGSUSED                  0x00010000
#define ATTR_VOL_CAPABILITIES                   0x00020000
#define ATTR_VOL_UUID                           0x00040000
#define ATTR_VOL_ATTRIBUTES                     0x40000000
#define ATTR_VOL_INFO                           0x80000000

#define ATTR_VOL_VALIDMASK                      0xC007FFFF

/*
 * The list of settable ATTR_VOL_* attributes include the following:
 * ATTR_VOL_NAME
 * ATTR_VOL_INFO
 */
#define ATTR_VOL_SETMASK                        0x80002000


/* File/directory attributes: */
#define ATTR_DIR_LINKCOUNT                      0x00000001
#define ATTR_DIR_ENTRYCOUNT                     0x00000002
#define ATTR_DIR_MOUNTSTATUS                    0x00000004
/* ATTR_DIR_MOUNTSTATUS Flags: */
#define   DIR_MNTSTATUS_MNTPOINT                0x00000001
#define   DIR_MNTSTATUS_TRIGGER                 0x00000002

#define ATTR_DIR_VALIDMASK                      0x00000007
#define ATTR_DIR_SETMASK                        0x00000000

#define ATTR_FILE_LINKCOUNT                     0x00000001
#define ATTR_FILE_TOTALSIZE                     0x00000002
#define ATTR_FILE_ALLOCSIZE                     0x00000004
#define ATTR_FILE_IOBLOCKSIZE                   0x00000008
#define ATTR_FILE_DEVTYPE                       0x00000020
#define ATTR_FILE_FORKCOUNT                     0x00000080
#define ATTR_FILE_FORKLIST                      0x00000100
#define ATTR_FILE_DATALENGTH                    0x00000200
#define ATTR_FILE_DATAALLOCSIZE                 0x00000400
#define ATTR_FILE_RSRCLENGTH                    0x00001000
#define ATTR_FILE_RSRCALLOCSIZE                 0x00002000

#define ATTR_FILE_VALIDMASK                     0x000037FF
/* 
 * Settable ATTR_FILE_* attributes include:
 * ATTR_FILE_DEVTYPE
 */
#define ATTR_FILE_SETMASK                       0x00000020

#define ATTR_FORK_TOTALSIZE                     0x00000001
#define ATTR_FORK_ALLOCSIZE                     0x00000002

#define ATTR_FORK_VALIDMASK                     0x00000003
#define ATTR_FORK_SETMASK                       0x00000000

/* Obsolete, implemented, not supported */
#define ATTR_CMN_NAMEDATTRCOUNT                 0x00080000
#define ATTR_CMN_NAMEDATTRLIST                  0x00100000
#define ATTR_FILE_CLUMPSIZE                     0x00000010      /* obsolete */
#define ATTR_FILE_FILETYPE                      0x00000040      /* always zero */
#define ATTR_FILE_DATAEXTENTS                   0x00000800      /* obsolete, HFS-specific */
#define ATTR_FILE_RSRCEXTENTS                   0x00004000      /* obsolete, HFS-specific */

/* Required attributes for getattrlistbulk(2) */
#define ATTR_BULK_REQUIRED (ATTR_CMN_NAME | ATTR_CMN_RETURNED_ATTRS)

/*
 * Searchfs
 */
#define SRCHFS_START                            0x00000001
#define SRCHFS_MATCHPARTIALNAMES                0x00000002
#define SRCHFS_MATCHDIRS                        0x00000004
#define SRCHFS_MATCHFILES                       0x00000008
#define SRCHFS_SKIPLINKS                        0x00000010
#define SRCHFS_SKIPINVISIBLE                    0x00000020
#define SRCHFS_SKIPPACKAGES                     0x00000040
#define SRCHFS_SKIPINAPPROPRIATE                0x00000080

#define SRCHFS_NEGATEPARAMS                     0x80000000
#define SRCHFS_VALIDOPTIONSMASK                 0x800000FF

struct fssearchblock {
        struct attrlist         *returnattrs;
        void                            *returnbuffer;
        size_t                          returnbuffersize;
        u_long                          maxmatches;
        struct timeval          timelimit;
        void                            *searchparams1;
        size_t                          sizeofsearchparams1;
        void                            *searchparams2;
        size_t                          sizeofsearchparams2;
        struct attrlist         searchattrs;
};

#ifdef KERNEL
/* LP64 version of fssearchblock.  all pointers and longs
 * grow when we're dealing with a 64-bit process.
 * WARNING - keep in sync with fssearchblock
 */

struct user64_fssearchblock {
        user64_addr_t         returnattrs;
        user64_addr_t         returnbuffer;
        user64_size_t         returnbuffersize;
        user64_ulong_t        maxmatches;
        struct user64_timeval   timelimit;
        user64_addr_t         searchparams1;
        user64_size_t         sizeofsearchparams1;
        user64_addr_t         searchparams2;
        user64_size_t         sizeofsearchparams2;
        struct attrlist         searchattrs;
};

struct user32_fssearchblock {
        user32_addr_t         returnattrs;
        user32_addr_t         returnbuffer;
        user32_size_t         returnbuffersize;
        user32_ulong_t        maxmatches;
        struct user32_timeval   timelimit;
        user32_addr_t         searchparams1;
        user32_size_t         sizeofsearchparams1;
        user32_addr_t         searchparams2;
        user32_size_t         sizeofsearchparams2;
        struct attrlist         searchattrs;
};

#endif /* KERNEL */

struct searchstate {
        uint32_t                        ss_union_flags;         // for SRCHFS_START
        uint32_t                        ss_union_layer;         // 0 = top
        u_char                          ss_fsstate[548];        // fs private
} __attribute__((packed));

#define FST_EOF (-1)                            /* end-of-file offset */

#endif /* __APPLE_API_UNSTABLE */
#endif /* !_SYS_ATTR_H_ */