/*      $OpenBSD: nfsv2.h,v 1.7 2003/06/02 23:36:54 millert Exp $       */

/*
 * 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. 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      */
};