nfsv2.h - platform/external/tcpdump - Git at Google

 /*
  * Copyright (c) 1994, 1995, 1996
  *	The Regents of the University of California.  All rights reserved.
  *
  * This code is derived from software contributed to Berkeley by
  * Rick Macklem at The University of Guelph.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  * 3. All advertising materials mentioning features or use of this software
  *    must display the following acknowledgement:
  *	This product includes software developed by the University of
  *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
  *	@(#)nfsv2.h	7.11 (Berkeley) 9/30/92
  */

 /*
  * nfs definitions as per the version 2 specs
  */

 /*
  * Constants as defined in the Sun NFS Version 2 spec.
  * "NFS: Network File System Protocol Specification" RFC1094
  */

 #define NFS_PORT	2049
 #define	NFS_PROG	100003
 #define NFS_VER2	2
 #define	NFS_MAXDGRAMDATA 8192
 #define	NFS_MAXDATA	32768
 #define	NFS_MAXPATHLEN	1024
 #define	NFS_MAXNAMLEN	255
 #define	NFS_FHSIZE	32
 #define	NFS_MAXPKTHDR	404
 #define NFS_MAXPACKET	(NFS_MAXPKTHDR+NFS_MAXDATA)
 #define	NFS_MINPACKET	20
 #define	NFS_FABLKSIZE	512	/* Size in bytes of a block wrt fa_blocks */

 /* Stat numbers for rpc returns */
 #define	NFS_OK		0
 #define	NFSERR_PERM	1
 #define	NFSERR_NOENT	2
 #define	NFSERR_IO	5
 #define	NFSERR_NXIO	6
 #define	NFSERR_ACCES	13
 #define	NFSERR_EXIST	17
 #define	NFSERR_NODEV	19
 #define	NFSERR_NOTDIR	20
 #define	NFSERR_ISDIR	21
 #define	NFSERR_FBIG	27
 #define	NFSERR_NOSPC	28
 #define	NFSERR_ROFS	30
 #define	NFSERR_NAMETOL	63
 #define	NFSERR_NOTEMPTY	66
 #define	NFSERR_DQUOT	69
 #define	NFSERR_STALE	70
 #define	NFSERR_WFLUSH	99

 /* Sizes in bytes of various nfs rpc components */
 #define	NFSX_FH		32
 #define	NFSX_UNSIGNED	4
 #define	NFSX_NFSFATTR	68
 #define	NFSX_NQFATTR	92
 #define	NFSX_NFSSATTR	32
 #define	NFSX_NQSATTR	44
 #define	NFSX_COOKIE	4
 #define NFSX_NFSSTATFS	20
 #define	NFSX_NQSTATFS	28
 #define	NFSX_FATTR(isnq)	((isnq) ? NFSX_NQFATTR : NFSX_NFSFATTR)
 #define	NFSX_SATTR(isnq)	((isnq) ? NFSX_NQSATTR : NFSX_NFSSATTR)
 #define	NFSX_STATFS(isnq)	((isnq) ? NFSX_NQSTATFS : NFSX_NFSSTATFS)

 /* nfs rpc procedure numbers */
 #define	NFSPROC_NULL		0
 #define	NFSPROC_GETATTR		1
 #define	NFSPROC_SETATTR		2
 #define	NFSPROC_NOOP		3
 #define	NFSPROC_ROOT		NFSPROC_NOOP	/* Obsolete */
 #define	NFSPROC_LOOKUP		4
 #define	NFSPROC_READLINK	5
 #define	NFSPROC_READ		6
 #define	NFSPROC_WRITECACHE	NFSPROC_NOOP	/* Obsolete */
 #define	NFSPROC_WRITE		8
 #define	NFSPROC_CREATE		9
 #define	NFSPROC_REMOVE		10
 #define	NFSPROC_RENAME		11
 #define	NFSPROC_LINK		12
 #define	NFSPROC_SYMLINK		13
 #define	NFSPROC_MKDIR		14
 #define	NFSPROC_RMDIR		15
 #define	NFSPROC_READDIR		16
 #define	NFSPROC_STATFS		17

 /* NQ nfs numbers */
 #define	NQNFSPROC_READDIRLOOK	18
 #define	NQNFSPROC_GETLEASE	19
 #define	NQNFSPROC_VACATED	20
 #define	NQNFSPROC_EVICTED	21
 #define	NQNFSPROC_ACCESS	22

 #define	NFS_NPROCS		23
 /* Conversion macros */
 extern int		vttoif_tab[];
 #define	vtonfs_mode(t,m) \
 		txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : \
 				MAKEIMODE((t), (m)))
 #define	nfstov_mode(a)	(fxdr_unsigned(u_short, (a))&07777)
 #define	vtonfs_type(a)	txdr_unsigned(nfs_type[((int32_t)(a))])
 #define	nfstov_type(a)	ntov_type[fxdr_unsigned(u_int32_t,(a))&0x7]

 /* File types */
 typedef enum {
     NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5
 } tcpdump_nfstype;

 /* Structs for common parts of the rpc's */
 struct nfsv2_time {
 	u_int32_t nfs_sec;
 	u_int32_t nfs_usec;
 };

 struct nqnfs_time {
 	u_int32_t nq_sec;
 	u_int32_t nq_nsec;
 };

 /*
  * File attributes and setable attributes. These structures cover both
  * NFS version 2 and the NQNFS protocol. Note that the union is only
  * used to that one pointer can refer to both variants. These structures
  * go out on the wire and must be densely packed, so no quad data types
  * are used. (all fields are int32_t or u_int32_t's or structures of same)
  * NB: You can't do sizeof(struct nfsv2_fattr), you must use the
  *     NFSX_FATTR(isnq) macro.
  */
 struct nfsv2_fattr {
 	u_int32_t fa_type;
 	u_int32_t fa_mode;
 	u_int32_t fa_nlink;
 	u_int32_t fa_uid;
 	u_int32_t fa_gid;
 	union {
 		struct {
 			u_int32_t nfsfa_size;
 			u_int32_t nfsfa_blocksize;
 			u_int32_t nfsfa_rdev;
 			u_int32_t nfsfa_blocks;
 			u_int32_t nfsfa_fsid;
 			u_int32_t nfsfa_fileid;
 			struct nfsv2_time nfsfa_atime;
 			struct nfsv2_time nfsfa_mtime;
 			struct nfsv2_time nfsfa_ctime;
 		} fa_nfsv2;
 		struct {
 			struct {
 				u_int32_t nqfa_qsize[2];
 			} nqfa_size;
 			u_int32_t nqfa_blocksize;
 			u_int32_t nqfa_rdev;
 			struct {
 				u_int32_t	nqfa_qbytes[2];
 			} nqfa_bytes;
 			u_int32_t nqfa_fsid;
 			u_int32_t nqfa_fileid;
 			struct nqnfs_time nqfa_atime;
 			struct nqnfs_time nqfa_mtime;
 			struct nqnfs_time nqfa_ctime;
 			u_int32_t nqfa_flags;
 			u_int32_t nqfa_gen;
 			struct {
 				u_int32_t nqfa_qfilerev[2];
 			} nqfa_filerev;
 		} fa_nqnfs;
 	} fa_un;
 };

 /* and some ugly defines for accessing union components */
 #define	fa_nfssize		fa_un.fa_nfsv2.nfsfa_size
 #define	fa_nfsblocksize		fa_un.fa_nfsv2.nfsfa_blocksize
 #define	fa_nfsrdev		fa_un.fa_nfsv2.nfsfa_rdev
 #define	fa_nfsblocks		fa_un.fa_nfsv2.nfsfa_blocks
 #define	fa_nfsfsid		fa_un.fa_nfsv2.nfsfa_fsid
 #define	fa_nfsfileid		fa_un.fa_nfsv2.nfsfa_fileid
 #define	fa_nfsatime		fa_un.fa_nfsv2.nfsfa_atime
 #define	fa_nfsmtime		fa_un.fa_nfsv2.nfsfa_mtime
 #define	fa_nfsctime		fa_un.fa_nfsv2.nfsfa_ctime
 #define	fa_nqsize		fa_un.fa_nqnfs.nqfa_size
 #define	fa_nqblocksize		fa_un.fa_nqnfs.nqfa_blocksize
 #define	fa_nqrdev		fa_un.fa_nqnfs.nqfa_rdev
 #define	fa_nqbytes		fa_un.fa_nqnfs.nqfa_bytes
 #define	fa_nqfsid		fa_un.fa_nqnfs.nqfa_fsid
 #define	fa_nqfileid		fa_un.fa_nqnfs.nqfa_fileid
 #define	fa_nqatime		fa_un.fa_nqnfs.nqfa_atime
 #define	fa_nqmtime		fa_un.fa_nqnfs.nqfa_mtime
 #define	fa_nqctime		fa_un.fa_nqnfs.nqfa_ctime
 #define	fa_nqflags		fa_un.fa_nqnfs.nqfa_flags
 #define	fa_nqgen		fa_un.fa_nqnfs.nqfa_gen
 #define	fa_nqfilerev		fa_un.fa_nqnfs.nqfa_filerev

 struct nfsv2_sattr {
 	u_int32_t sa_mode;
 	u_int32_t sa_uid;
 	u_int32_t sa_gid;
 	union {
 		struct {
 			u_int32_t nfssa_size;
 			struct nfsv2_time nfssa_atime;
 			struct nfsv2_time nfssa_mtime;
 		} sa_nfsv2;
 		struct {
 			struct {
 				u_int32_t nqsa_qsize[2];
 			} nqsa_size;
 			struct nqnfs_time nqsa_atime;
 			struct nqnfs_time nqsa_mtime;
 			u_int32_t nqsa_flags;
 			u_int32_t nqsa_rdev;
 		} sa_nqnfs;
 	} sa_un;
 };

 /* and some ugly defines for accessing the unions */
 #define	sa_nfssize		sa_un.sa_nfsv2.nfssa_size
 #define	sa_nfsatime		sa_un.sa_nfsv2.nfssa_atime
 #define	sa_nfsmtime		sa_un.sa_nfsv2.nfssa_mtime
 #define	sa_nqsize		sa_un.sa_nqnfs.nqsa_size
 #define	sa_nqatime		sa_un.sa_nqnfs.nqsa_atime
 #define	sa_nqmtime		sa_un.sa_nqnfs.nqsa_mtime
 #define	sa_nqflags		sa_un.sa_nqnfs.nqsa_flags
 #define	sa_nqrdev		sa_un.sa_nqnfs.nqsa_rdev

 struct nfsv2_statfs {
 	u_int32_t sf_tsize;
 	u_int32_t sf_bsize;
 	u_int32_t sf_blocks;
 	u_int32_t sf_bfree;
 	u_int32_t sf_bavail;
 	u_int32_t sf_files;	/* Nqnfs only */
 	u_int32_t sf_ffree;	/* ditto      */
 };
	/*
	* Copyright (c) 1994, 1995, 1996
	* The Regents of the University of California. All rights reserved.
	*
	* This code is derived from software contributed to Berkeley by
	* Rick Macklem at The University of Guelph.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	* 3. All advertising materials mentioning features or use of this software
	* must display the following acknowledgement:
	* This product includes software developed by the University of
	* California, Berkeley and its contributors.
	* 4. Neither the name of the University nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*
	* @(#)nfsv2.h 7.11 (Berkeley) 9/30/92
	*/

	/*
	* nfs definitions as per the version 2 specs
	*/

	/*
	* Constants as defined in the Sun NFS Version 2 spec.
	* "NFS: Network File System Protocol Specification" RFC1094
	*/

	#define NFS_PORT 2049
	#define NFS_PROG 100003
	#define NFS_VER2 2
	#define NFS_MAXDGRAMDATA 8192
	#define NFS_MAXDATA 32768
	#define NFS_MAXPATHLEN 1024
	#define NFS_MAXNAMLEN 255
	#define NFS_FHSIZE 32
	#define NFS_MAXPKTHDR 404
	#define NFS_MAXPACKET (NFS_MAXPKTHDR+NFS_MAXDATA)
	#define NFS_MINPACKET 20
	#define NFS_FABLKSIZE 512 /* Size in bytes of a block wrt fa_blocks */

	/* Stat numbers for rpc returns */
	#define NFS_OK 0
	#define NFSERR_PERM 1
	#define NFSERR_NOENT 2
	#define NFSERR_IO 5
	#define NFSERR_NXIO 6
	#define NFSERR_ACCES 13
	#define NFSERR_EXIST 17
	#define NFSERR_NODEV 19
	#define NFSERR_NOTDIR 20
	#define NFSERR_ISDIR 21
	#define NFSERR_FBIG 27
	#define NFSERR_NOSPC 28
	#define NFSERR_ROFS 30
	#define NFSERR_NAMETOL 63
	#define NFSERR_NOTEMPTY 66
	#define NFSERR_DQUOT 69
	#define NFSERR_STALE 70
	#define NFSERR_WFLUSH 99

	/* Sizes in bytes of various nfs rpc components */
	#define NFSX_FH 32
	#define NFSX_UNSIGNED 4
	#define NFSX_NFSFATTR 68
	#define NFSX_NQFATTR 92
	#define NFSX_NFSSATTR 32
	#define NFSX_NQSATTR 44
	#define NFSX_COOKIE 4
	#define NFSX_NFSSTATFS 20
	#define NFSX_NQSTATFS 28
	#define NFSX_FATTR(isnq) ((isnq) ? NFSX_NQFATTR : NFSX_NFSFATTR)
	#define NFSX_SATTR(isnq) ((isnq) ? NFSX_NQSATTR : NFSX_NFSSATTR)
	#define NFSX_STATFS(isnq) ((isnq) ? NFSX_NQSTATFS : NFSX_NFSSTATFS)

	/* nfs rpc procedure numbers */
	#define NFSPROC_NULL 0
	#define NFSPROC_GETATTR 1
	#define NFSPROC_SETATTR 2
	#define NFSPROC_NOOP 3
	#define NFSPROC_ROOT NFSPROC_NOOP /* Obsolete */
	#define NFSPROC_LOOKUP 4
	#define NFSPROC_READLINK 5
	#define NFSPROC_READ 6
	#define NFSPROC_WRITECACHE NFSPROC_NOOP /* Obsolete */
	#define NFSPROC_WRITE 8
	#define NFSPROC_CREATE 9
	#define NFSPROC_REMOVE 10
	#define NFSPROC_RENAME 11
	#define NFSPROC_LINK 12
	#define NFSPROC_SYMLINK 13
	#define NFSPROC_MKDIR 14
	#define NFSPROC_RMDIR 15
	#define NFSPROC_READDIR 16
	#define NFSPROC_STATFS 17

	/* NQ nfs numbers */
	#define NQNFSPROC_READDIRLOOK 18
	#define NQNFSPROC_GETLEASE 19
	#define NQNFSPROC_VACATED 20
	#define NQNFSPROC_EVICTED 21
	#define NQNFSPROC_ACCESS 22

	#define NFS_NPROCS 23
	/* Conversion macros */
	extern int vttoif_tab[];
	#define vtonfs_mode(t,m) \
	txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : \
	MAKEIMODE((t), (m)))
	#define nfstov_mode(a) (fxdr_unsigned(u_short, (a))&07777)
	#define vtonfs_type(a) txdr_unsigned(nfs_type[((int32_t)(a))])
	#define nfstov_type(a) ntov_type[fxdr_unsigned(u_int32_t,(a))&0x7]

	/* File types */
	typedef enum {
	NFNON=0, NFREG=1, NFDIR=2, NFBLK=3, NFCHR=4, NFLNK=5
	} tcpdump_nfstype;

	/* Structs for common parts of the rpc's */
	struct nfsv2_time {
	u_int32_t nfs_sec;
	u_int32_t nfs_usec;
	};

	struct nqnfs_time {
	u_int32_t nq_sec;
	u_int32_t nq_nsec;
	};

	/*
	* File attributes and setable attributes. These structures cover both
	* NFS version 2 and the NQNFS protocol. Note that the union is only
	* used to that one pointer can refer to both variants. These structures
	* go out on the wire and must be densely packed, so no quad data types
	* are used. (all fields are int32_t or u_int32_t's or structures of same)
	* NB: You can't do sizeof(struct nfsv2_fattr), you must use the
	* NFSX_FATTR(isnq) macro.
	*/
	struct nfsv2_fattr {
	u_int32_t fa_type;
	u_int32_t fa_mode;
	u_int32_t fa_nlink;
	u_int32_t fa_uid;
	u_int32_t fa_gid;
	union {
	struct {
	u_int32_t nfsfa_size;
	u_int32_t nfsfa_blocksize;
	u_int32_t nfsfa_rdev;
	u_int32_t nfsfa_blocks;
	u_int32_t nfsfa_fsid;
	u_int32_t nfsfa_fileid;
	struct nfsv2_time nfsfa_atime;
	struct nfsv2_time nfsfa_mtime;
	struct nfsv2_time nfsfa_ctime;
	} fa_nfsv2;
	struct {
	struct {
	u_int32_t nqfa_qsize[2];
	} nqfa_size;
	u_int32_t nqfa_blocksize;
	u_int32_t nqfa_rdev;
	struct {
	u_int32_t nqfa_qbytes[2];
	} nqfa_bytes;
	u_int32_t nqfa_fsid;
	u_int32_t nqfa_fileid;
	struct nqnfs_time nqfa_atime;
	struct nqnfs_time nqfa_mtime;
	struct nqnfs_time nqfa_ctime;
	u_int32_t nqfa_flags;
	u_int32_t nqfa_gen;
	struct {
	u_int32_t nqfa_qfilerev[2];
	} nqfa_filerev;
	} fa_nqnfs;
	} fa_un;
	};

	/* and some ugly defines for accessing union components */
	#define fa_nfssize fa_un.fa_nfsv2.nfsfa_size
	#define fa_nfsblocksize fa_un.fa_nfsv2.nfsfa_blocksize
	#define fa_nfsrdev fa_un.fa_nfsv2.nfsfa_rdev
	#define fa_nfsblocks fa_un.fa_nfsv2.nfsfa_blocks
	#define fa_nfsfsid fa_un.fa_nfsv2.nfsfa_fsid
	#define fa_nfsfileid fa_un.fa_nfsv2.nfsfa_fileid
	#define fa_nfsatime fa_un.fa_nfsv2.nfsfa_atime
	#define fa_nfsmtime fa_un.fa_nfsv2.nfsfa_mtime
	#define fa_nfsctime fa_un.fa_nfsv2.nfsfa_ctime
	#define fa_nqsize fa_un.fa_nqnfs.nqfa_size
	#define fa_nqblocksize fa_un.fa_nqnfs.nqfa_blocksize
	#define fa_nqrdev fa_un.fa_nqnfs.nqfa_rdev
	#define fa_nqbytes fa_un.fa_nqnfs.nqfa_bytes
	#define fa_nqfsid fa_un.fa_nqnfs.nqfa_fsid
	#define fa_nqfileid fa_un.fa_nqnfs.nqfa_fileid
	#define fa_nqatime fa_un.fa_nqnfs.nqfa_atime
	#define fa_nqmtime fa_un.fa_nqnfs.nqfa_mtime
	#define fa_nqctime fa_un.fa_nqnfs.nqfa_ctime
	#define fa_nqflags fa_un.fa_nqnfs.nqfa_flags
	#define fa_nqgen fa_un.fa_nqnfs.nqfa_gen
	#define fa_nqfilerev fa_un.fa_nqnfs.nqfa_filerev

	struct nfsv2_sattr {
	u_int32_t sa_mode;
	u_int32_t sa_uid;
	u_int32_t sa_gid;
	union {
	struct {
	u_int32_t nfssa_size;
	struct nfsv2_time nfssa_atime;
	struct nfsv2_time nfssa_mtime;
	} sa_nfsv2;
	struct {
	struct {
	u_int32_t nqsa_qsize[2];
	} nqsa_size;
	struct nqnfs_time nqsa_atime;
	struct nqnfs_time nqsa_mtime;
	u_int32_t nqsa_flags;
	u_int32_t nqsa_rdev;
	} sa_nqnfs;
	} sa_un;
	};

	/* and some ugly defines for accessing the unions */
	#define sa_nfssize sa_un.sa_nfsv2.nfssa_size
	#define sa_nfsatime sa_un.sa_nfsv2.nfssa_atime
	#define sa_nfsmtime sa_un.sa_nfsv2.nfssa_mtime
	#define sa_nqsize sa_un.sa_nqnfs.nqsa_size
	#define sa_nqatime sa_un.sa_nqnfs.nqsa_atime
	#define sa_nqmtime sa_un.sa_nqnfs.nqsa_mtime
	#define sa_nqflags sa_un.sa_nqnfs.nqsa_flags
	#define sa_nqrdev sa_un.sa_nqnfs.nqsa_rdev

	struct nfsv2_statfs {
	u_int32_t sf_tsize;
	u_int32_t sf_bsize;
	u_int32_t sf_blocks;
	u_int32_t sf_bfree;
	u_int32_t sf_bavail;
	u_int32_t sf_files; /* Nqnfs only */
	u_int32_t sf_ffree; /* ditto */
	};