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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/tcpdump/parsenfsfh.c	Lines:	0	111	0.0 %
Date:	2017-11-13	Branches:	0	101	0.0 %


/*	$OpenBSD: parsenfsfh.c,v 1.14 2016/01/15 18:02:18 mmcc Exp $	*/

/*
 * Copyright (c) 1993, 1994 Jeffrey C. Mogul, Digital Equipment Corporation,
 * Western Research Laboratory. All rights reserved.
 * Copyright (c) 2001 Compaq Computer Corporation. All rights reserved.
 *
 *  Permission to use, copy, and modify this software and its
 *  documentation is hereby granted only under the following terms and
 *  conditions.  Both the above copyright notice and this permission
 *  notice must appear in all copies of the software, derivative works
 *  or modified versions, and any portions thereof, and both notices
 *  must appear in supporting documentation.
 *
 *  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.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS" AND COMPAQ COMPUTER CORPORATION
 *  DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
 *  ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.   IN NO
 *  EVENT SHALL COMPAQ COMPUTER CORPORATION BE LIABLE FOR ANY
 *  SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
 *  AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 *  OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 *  SOFTWARE.
 */

/*
 * parsenfsfh.c - portable parser for NFS file handles
 *			uses all sorts of heuristics
 *
 * Jeffrey C. Mogul
 * Digital Equipment Corporation
 * Western Research Laboratory
 */

#include <sys/types.h>
#include <sys/time.h>

#include <ctype.h>
#include <stdio.h>
#include <string.h>

#include "interface.h"
#include "nfsfh.h"

/*
 * This routine attempts to parse a file handle (in network byte order),
 * using heuristics to guess what kind of format it is in.  See the
 * file "fhandle_layouts" for a detailed description of the various
 * patterns we know about.
 *
 * The file handle is parsed into our internal representation of a
 * file-system id, and an internal representation of an inode-number.
 */

#define	FHT_UNKNOWN	0
#define	FHT_AUSPEX	1
#define	FHT_DECOSF	2
#define	FHT_IRIX4	3
#define	FHT_IRIX5	4
#define	FHT_SUNOS3	5
#define	FHT_SUNOS4	6
#define	FHT_ULTRIX	7
#define	FHT_VMSUCX	8
#define	FHT_SUNOS5	9
#define	FHT_AIX32	10
#define	FHT_HPUX9	11

#define	make_uint32(msb,b,c,lsb)\
	((lsb) + ((c)<<8) + ((b)<<16) + ((msb)<<24))

#define	make_uint24(msb,b, lsb)\
	((lsb) + ((b)<<8) + ((msb)<<16))

#define	make_uint16(msb,lsb)\
	((lsb) + ((msb)<<8))

#ifdef	__alpha
	/* or other 64-bit systems */
#define	make_uint48(msb,b,c,d,e,lsb)\
	((lsb) + ((e)<<8) + ((d)<<16) + ((c)<<24) + ((b)<<32) + ((msb)<<40))
#else
	/* on 32-bit systems ignore high-order bits */
#define	make_uint48(msb,b,c,d,e,lsb)\
	((lsb) + ((e)<<8) + ((d)<<16) + ((c)<<24))
#endif

static int is_UCX(unsigned char *);

void
Parse_fh(fh, fsidp, inop, osnamep, fsnamep)
caddr_t *fh;
my_fsid *fsidp;
ino_t *inop;
char **osnamep;		/* if non-NULL, return OS name here */
char **fsnamep;		/* if non-NULL, return server fs name here (for VMS) */
{
	unsigned char *fhp = (unsigned char *)fh;
	u_int32_t temp;
	int fhtype = FHT_UNKNOWN;

	/*
	 * This is basically a big decision tree
	 */
	if ((fhp[0] == 0) && (fhp[1] == 0)) {
	    /* bytes[0,1] == (0,0); rules out Ultrix, IRIX5, SUNOS5 */
	    /* probably rules out HP-UX, AIX unless they allow major=0 */
	    if ((fhp[2] == 0) && (fhp[3] == 0)) {
		/* bytes[2,3] == (0,0); must be Auspex */
		/* XXX or could be Ultrix+MASSBUS "hp" disk? */
		fhtype = FHT_AUSPEX;
	    }
	    else {
		/*
		 * bytes[2,3] != (0,0); rules out Auspex, could be
		 * DECOSF, SUNOS4, or IRIX4
		 */
		if ((fhp[4] != 0) && (fhp[5] == 0) &&
			(fhp[8] == 12) && (fhp[9] == 0)) {
		    /* seems to be DECOSF, with minor == 0 */
		    fhtype = FHT_DECOSF;
		}
		else {
		    /* could be SUNOS4 or IRIX4 */
		    /* XXX the test of fhp[5] == 8 could be wrong */
		    if ((fhp[4] == 0) && (fhp[5] == 8) && (fhp[6] == 0) &&
			(fhp[7] == 0)) {
			/* looks like a length, not a file system typecode */
			fhtype = FHT_IRIX4;
		    }
		    else {
			/* by elimination */
			fhtype = FHT_SUNOS4;
		    }
		}
	    }
	}
	else {
	    /*
	     * bytes[0,1] != (0,0); rules out Auspex, IRIX4, SUNOS4
	     * could be IRIX5, DECOSF, UCX, Ultrix, SUNOS5
	     * could be AIX, HP-UX
	     */
	    if ((fhp[2] == 0) && (fhp[3] == 0)) {
		/*
		 * bytes[2,3] == (0,0); rules out OSF, probably not UCX
		 * (unless the exported device name is just one letter!),
		 * could be Ultrix, IRIX5, AIX, or SUNOS5
		 * might be HP-UX (depends on their values for minor devs)
		 */
		/*XXX we probably only need to test of these two bytes */
		if ((fhp[21] == 0) && (fhp[23] == 0)) {
		    fhtype = FHT_ULTRIX;
		}
		else {
		    /* Could be SUNOS5/IRIX5, maybe AIX */
		    /* XXX no obvious difference between SUNOS5 and IRIX5 */
		    if (fhp[9] == 10)
			fhtype = FHT_SUNOS5;
		    /* XXX what about AIX? */
		}
	    }
	    else {
		/*
		 * bytes[2,3] != (0,0); rules out Ultrix, could be
		 * DECOSF, SUNOS5, IRIX5, AIX, HP-UX, or UCX
		 */
		if ((fhp[8] == 12) && (fhp[9] == 0)) {
		    fhtype = FHT_DECOSF;
		}
		else if ((fhp[8] == 0) && (fhp[9] == 10)) {
		    /* could be SUNOS5/IRIX5, AIX, HP-UX */
		    if ((fhp[7] == 0) && (fhp[6] == 0) &&
			(fhp[5] == 0) && (fhp[4] == 0)) {
			/* XXX is this always true of HP-UX? */
			fhtype = FHT_HPUX9;
		    }
		    else if (fhp[7] == 2) {
			/* This would be MNT_NFS on AIX, which is impossible */
			fhtype = FHT_SUNOS5;	/* or maybe IRIX5 */
		    }
		    else {
			/*
			 * XXX Could be SUNOS5/IRIX5 or AIX.  I don't
			 * XXX see any way to disambiguate these, so
			 * XXX I'm going with the more likely guess.
			 * XXX Sorry, Big Blue.
			 */
			fhtype = FHT_SUNOS5;	/* or maybe IRIX5 */
		    }
	        }
		else {
		    if (is_UCX(fhp)) {
			fhtype = FHT_VMSUCX;
		    }
		    else {
			fhtype = FHT_UNKNOWN;
		    }
		}
	    }
	}

	/* XXX still needs to handle SUNOS3 */

	switch (fhtype) {
	case FHT_AUSPEX:
	    fsidp->Fsid_dev.Minor = fhp[7];
	    fsidp->Fsid_dev.Major = fhp[6];
	    fsidp->fsid_code = 0;

	    temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
	    *inop = temp;

	    if (osnamep)
		*osnamep = "Auspex";
	    break;

	case FHT_DECOSF:
	    fsidp->fsid_code = make_uint32(fhp[7], fhp[6], fhp[5], fhp[4]);
			/* XXX could ignore 3 high-order bytes */

	    temp = make_uint32(fhp[3], fhp[2], fhp[1], fhp[0]);
	    fsidp->Fsid_dev.Minor = temp & 0xFFFFF;
	    fsidp->Fsid_dev.Major = (temp>>20) & 0xFFF;

	    temp = make_uint32(fhp[15], fhp[14], fhp[13], fhp[12]);
	    *inop = temp;
	    if (osnamep)
		*osnamep = "OSF";
	    break;

	case FHT_IRIX4:
	    fsidp->Fsid_dev.Minor = fhp[3];
	    fsidp->Fsid_dev.Major = fhp[2];
	    fsidp->fsid_code = 0;

	    temp = make_uint32(fhp[8], fhp[9], fhp[10], fhp[11]);
	    *inop = temp;

	    if (osnamep)
		*osnamep = "IRIX4";
	    break;

	case FHT_IRIX5:
	    fsidp->Fsid_dev.Minor = make_uint16(fhp[2], fhp[3]);
	    fsidp->Fsid_dev.Major = make_uint16(fhp[0], fhp[1]);
	    fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);

	    temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
	    *inop = temp;

	    if (osnamep)
		*osnamep = "IRIX5";
	    break;

	case FHT_SUNOS3:
	    if (osnamep)
		*osnamep = "SUNOS3";
	    break;

	case FHT_SUNOS4:
	    fsidp->Fsid_dev.Minor = fhp[3];
	    fsidp->Fsid_dev.Major = fhp[2];
	    fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);

	    temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
	    *inop = temp;

	    if (osnamep)
		*osnamep = "SUNOS4";
	    break;

	case FHT_SUNOS5:
	    temp = make_uint16(fhp[0], fhp[1]);
	    fsidp->Fsid_dev.Major = (temp>>2) &  0x3FFF;
	    temp = make_uint24(fhp[1], fhp[2], fhp[3]);
	    fsidp->Fsid_dev.Minor = temp & 0x3FFFF;
	    fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);

	    temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
	    *inop = temp;

	    if (osnamep)
		*osnamep = "SUNOS5";
	    break;

	case FHT_ULTRIX:
	    fsidp->fsid_code = 0;
	    fsidp->Fsid_dev.Minor = fhp[0];
	    fsidp->Fsid_dev.Major = fhp[1];

	    temp = make_uint32(fhp[7], fhp[6], fhp[5], fhp[4]);
	    *inop = temp;
	    if (osnamep)
		*osnamep = "Ultrix";
	    break;

	case FHT_VMSUCX:
	    /* No numeric file system ID, so hash on the device-name */
	    if (sizeof(*fsidp) >= 14) {
		if (sizeof(*fsidp) > 14)
		    memset((char *)fsidp, 0, sizeof(*fsidp));
		/* just use the whole thing */
		memcpy((char *)fsidp, (char *)fh, 14);
	    }
	    else {
		u_int32_t tempa[4];	/* at least 16 bytes, maybe more */

		memset((char *)tempa, 0, sizeof(tempa));
		memcpy((char *)tempa, (char *)fh, 14); /* ensure alignment */
		fsidp->Fsid_dev.Minor = tempa[0] + (tempa[1]<<1);
		fsidp->Fsid_dev.Major = tempa[2] + (tempa[3]<<1);
		fsidp->fsid_code = 0;
	    }

	    /* VMS file ID is: (RVN, FidHi, FidLo) */
	    *inop = make_uint32(fhp[26], fhp[27], fhp[23], fhp[22]);

	    /* Caller must save (and null-terminate?) this value */
	    if (fsnamep)
		*fsnamep = (char *)&(fhp[1]);

	    if (osnamep)
		*osnamep = "VMS";
	    break;

	case FHT_AIX32:
	    fsidp->Fsid_dev.Minor = make_uint16(fhp[2], fhp[3]);
	    fsidp->Fsid_dev.Major = make_uint16(fhp[0], fhp[1]);
	    fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);

	    temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
	    *inop = temp;

	    if (osnamep)
		*osnamep = "AIX32";
	    break;

	case FHT_HPUX9:
	    fsidp->Fsid_dev.Major = fhp[0];
	    temp = make_uint24(fhp[1], fhp[2], fhp[3]);
	    fsidp->Fsid_dev.Minor = temp;
	    fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);

	    temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
	    *inop = temp;

	    if (osnamep)
		*osnamep = "HPUX9";
	    break;

	case FHT_UNKNOWN:
#ifdef DEBUG
	    {
		int i;
		for (i = 0; i < 32; i++)
			(void)fprintf(stderr, "%x.", fhp[i]);
		(void)fprintf(stderr, "\n");
	    }
#endif
	    /* XXX for now, give "bogus" values to aid debugging */
	    fsidp->fsid_code = 0;
	    fsidp->Fsid_dev.Minor = 257;
	    fsidp->Fsid_dev.Major = 257;
	    *inop = 1;

	    /* display will show this string instead of (257,257) */
	    if (fsnamep)
		*fsnamep = "Unknown";

	    if (osnamep)
		*osnamep = "Unknown";
	    break;

	}
}

/*
 * Is this a VMS UCX file handle?
 *	Check for:
 *	(1) leading code byte	[XXX not yet]
 *	(2) followed by string of printing chars & spaces
 *	(3) followed by string of nulls
 */
static int
is_UCX(fhp)
unsigned char *fhp;
{
	int i;
	int seen_null = 0;

	for (i = 1; i < 14; i++) {
	    if (isprint(fhp[i])) {
		if (seen_null)
		   return(0);
		else
		   continue;
	    }
	    else if (fhp[i] == 0) {
		seen_null = 1;
		continue;
	    }
	    else
		return(0);
	}

	return(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: parsenfsfh.c,v 1.14 2016/01/15 18:02:18 mmcc Exp $ */
2
3			/*
4			* Copyright (c) 1993, 1994 Jeffrey C. Mogul, Digital Equipment Corporation,
5			* Western Research Laboratory. All rights reserved.
6			* Copyright (c) 2001 Compaq Computer Corporation. All rights reserved.
7			*
8			* Permission to use, copy, and modify this software and its
9			* documentation is hereby granted only under the following terms and
10			* conditions. Both the above copyright notice and this permission
11			* notice must appear in all copies of the software, derivative works
12			* or modified versions, and any portions thereof, and both notices
13			* must appear in supporting documentation.
14			*
15			* Redistribution and use in source and binary forms, with or without
16			* modification, are permitted provided that the following conditions
17			* are met:
18			* 1. Redistributions of source code must retain the above copyright
19			* notice, this list of conditions and the following disclaimer.
20			* 2. Redistributions in binary form must reproduce the above copyright
21			* notice, this list of conditions and the following disclaimer in
22			* the documentation and/or other materials provided with the
23			* distribution.
24			*
25			* THE SOFTWARE IS PROVIDED "AS IS" AND COMPAQ COMPUTER CORPORATION
26			* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
27			* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
28			* EVENT SHALL COMPAQ COMPUTER CORPORATION BE LIABLE FOR ANY
29			* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
30			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
31			* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
32			* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
33			* SOFTWARE.
34			*/
35
36			/*
37			* parsenfsfh.c - portable parser for NFS file handles
38			* uses all sorts of heuristics
39			*
40			* Jeffrey C. Mogul
41			* Digital Equipment Corporation
42			* Western Research Laboratory
43			*/
44
45			#include <sys/types.h>
46			#include <sys/time.h>
47
48			#include <ctype.h>
49			#include <stdio.h>
50			#include <string.h>
51
52			#include "interface.h"
53			#include "nfsfh.h"
54
55			/*
56			* This routine attempts to parse a file handle (in network byte order),
57			* using heuristics to guess what kind of format it is in. See the
58			* file "fhandle_layouts" for a detailed description of the various
59			* patterns we know about.
60			*
61			* The file handle is parsed into our internal representation of a
62			* file-system id, and an internal representation of an inode-number.
63			*/
64
65			#define FHT_UNKNOWN 0
66			#define FHT_AUSPEX 1
67			#define FHT_DECOSF 2
68			#define FHT_IRIX4 3
69			#define FHT_IRIX5 4
70			#define FHT_SUNOS3 5
71			#define FHT_SUNOS4 6
72			#define FHT_ULTRIX 7
73			#define FHT_VMSUCX 8
74			#define FHT_SUNOS5 9
75			#define FHT_AIX32 10
76			#define FHT_HPUX9 11
77
78			#define make_uint32(msb,b,c,lsb)\
79			((lsb) + ((c)<<8) + ((b)<<16) + ((msb)<<24))
80
81			#define make_uint24(msb,b, lsb)\
82			((lsb) + ((b)<<8) + ((msb)<<16))
83
84			#define make_uint16(msb,lsb)\
85			((lsb) + ((msb)<<8))
86
87			#ifdef __alpha
88			/* or other 64-bit systems */
89			#define make_uint48(msb,b,c,d,e,lsb)\
90			((lsb) + ((e)<<8) + ((d)<<16) + ((c)<<24) + ((b)<<32) + ((msb)<<40))
91			#else
92			/* on 32-bit systems ignore high-order bits */
93			#define make_uint48(msb,b,c,d,e,lsb)\
94			((lsb) + ((e)<<8) + ((d)<<16) + ((c)<<24))
95			#endif
96
97			static int is_UCX(unsigned char *);
98
99			void
100			Parse_fh(fh, fsidp, inop, osnamep, fsnamep)
101			caddr_t *fh;
102			my_fsid *fsidp;
103			ino_t *inop;
104			char *osnamep; / if non-NULL, return OS name here */
105			char *fsnamep; / if non-NULL, return server fs name here (for VMS) */
106			{
107			unsigned char fhp = (unsigned char )fh;
108			u_int32_t temp;
109			int fhtype = FHT_UNKNOWN;
110
111			/*
112			* This is basically a big decision tree
113			*/
114			if ((fhp[0] == 0) && (fhp[1] == 0)) {
115			/* bytes[0,1] == (0,0); rules out Ultrix, IRIX5, SUNOS5 */
116			/* probably rules out HP-UX, AIX unless they allow major=0 */
117			if ((fhp[2] == 0) && (fhp[3] == 0)) {
118			/* bytes[2,3] == (0,0); must be Auspex */
119			/* XXX or could be Ultrix+MASSBUS "hp" disk? */
120			fhtype = FHT_AUSPEX;
121			}
122			else {
123			/*
124			* bytes[2,3] != (0,0); rules out Auspex, could be
125			* DECOSF, SUNOS4, or IRIX4
126			*/
127			if ((fhp[4] != 0) && (fhp[5] == 0) &&
128			(fhp[8] == 12) && (fhp[9] == 0)) {
129			/* seems to be DECOSF, with minor == 0 */
130			fhtype = FHT_DECOSF;
131			}
132			else {
133			/* could be SUNOS4 or IRIX4 */
134			/* XXX the test of fhp[5] == 8 could be wrong */
135			if ((fhp[4] == 0) && (fhp[5] == 8) && (fhp[6] == 0) &&
136			(fhp[7] == 0)) {
137			/* looks like a length, not a file system typecode */
138			fhtype = FHT_IRIX4;
139			}
140			else {
141			/* by elimination */
142			fhtype = FHT_SUNOS4;
143			}
144			}
145			}
146			}
147			else {
148			/*
149			* bytes[0,1] != (0,0); rules out Auspex, IRIX4, SUNOS4
150			* could be IRIX5, DECOSF, UCX, Ultrix, SUNOS5
151			* could be AIX, HP-UX
152			*/
153			if ((fhp[2] == 0) && (fhp[3] == 0)) {
154			/*
155			* bytes[2,3] == (0,0); rules out OSF, probably not UCX
156			* (unless the exported device name is just one letter!),
157			* could be Ultrix, IRIX5, AIX, or SUNOS5
158			* might be HP-UX (depends on their values for minor devs)
159			*/
160			/XXX we probably only need to test of these two bytes /
161			if ((fhp[21] == 0) && (fhp[23] == 0)) {
162			fhtype = FHT_ULTRIX;
163			}
164			else {
165			/* Could be SUNOS5/IRIX5, maybe AIX */
166			/* XXX no obvious difference between SUNOS5 and IRIX5 */
167			if (fhp[9] == 10)
168			fhtype = FHT_SUNOS5;
169			/* XXX what about AIX? */
170			}
171			}
172			else {
173			/*
174			* bytes[2,3] != (0,0); rules out Ultrix, could be
175			* DECOSF, SUNOS5, IRIX5, AIX, HP-UX, or UCX
176			*/
177			if ((fhp[8] == 12) && (fhp[9] == 0)) {
178			fhtype = FHT_DECOSF;
179			}
180			else if ((fhp[8] == 0) && (fhp[9] == 10)) {
181			/* could be SUNOS5/IRIX5, AIX, HP-UX */
182			if ((fhp[7] == 0) && (fhp[6] == 0) &&
183			(fhp[5] == 0) && (fhp[4] == 0)) {
184			/* XXX is this always true of HP-UX? */
185			fhtype = FHT_HPUX9;
186			}
187			else if (fhp[7] == 2) {
188			/* This would be MNT_NFS on AIX, which is impossible */
189			fhtype = FHT_SUNOS5; /* or maybe IRIX5 */
190			}
191			else {
192			/*
193			* XXX Could be SUNOS5/IRIX5 or AIX. I don't
194			* XXX see any way to disambiguate these, so
195			* XXX I'm going with the more likely guess.
196			* XXX Sorry, Big Blue.
197			*/
198			fhtype = FHT_SUNOS5; /* or maybe IRIX5 */
199			}
200			}
201			else {
202			if (is_UCX(fhp)) {
203			fhtype = FHT_VMSUCX;
204			}
205			else {
206			fhtype = FHT_UNKNOWN;
207			}
208			}
209			}
210			}
211
212			/* XXX still needs to handle SUNOS3 */
213
214			switch (fhtype) {
215			case FHT_AUSPEX:
216			fsidp->Fsid_dev.Minor = fhp[7];
217			fsidp->Fsid_dev.Major = fhp[6];
218			fsidp->fsid_code = 0;
219
220			temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
221			*inop = temp;
222
223			if (osnamep)
224			*osnamep = "Auspex";
225			break;
226
227			case FHT_DECOSF:
228			fsidp->fsid_code = make_uint32(fhp[7], fhp[6], fhp[5], fhp[4]);
229			/* XXX could ignore 3 high-order bytes */
230
231			temp = make_uint32(fhp[3], fhp[2], fhp[1], fhp[0]);
232			fsidp->Fsid_dev.Minor = temp & 0xFFFFF;
233			fsidp->Fsid_dev.Major = (temp>>20) & 0xFFF;
234
235			temp = make_uint32(fhp[15], fhp[14], fhp[13], fhp[12]);
236			*inop = temp;
237			if (osnamep)
238			*osnamep = "OSF";
239			break;
240
241			case FHT_IRIX4:
242			fsidp->Fsid_dev.Minor = fhp[3];
243			fsidp->Fsid_dev.Major = fhp[2];
244			fsidp->fsid_code = 0;
245
246			temp = make_uint32(fhp[8], fhp[9], fhp[10], fhp[11]);
247			*inop = temp;
248
249			if (osnamep)
250			*osnamep = "IRIX4";
251			break;
252
253			case FHT_IRIX5:
254			fsidp->Fsid_dev.Minor = make_uint16(fhp[2], fhp[3]);
255			fsidp->Fsid_dev.Major = make_uint16(fhp[0], fhp[1]);
256			fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);
257
258			temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
259			*inop = temp;
260
261			if (osnamep)
262			*osnamep = "IRIX5";
263			break;
264
265			case FHT_SUNOS3:
266			if (osnamep)
267			*osnamep = "SUNOS3";
268			break;
269
270			case FHT_SUNOS4:
271			fsidp->Fsid_dev.Minor = fhp[3];
272			fsidp->Fsid_dev.Major = fhp[2];
273			fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);
274
275			temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
276			*inop = temp;
277
278			if (osnamep)
279			*osnamep = "SUNOS4";
280			break;
281
282			case FHT_SUNOS5:
283			temp = make_uint16(fhp[0], fhp[1]);
284			fsidp->Fsid_dev.Major = (temp>>2) & 0x3FFF;
285			temp = make_uint24(fhp[1], fhp[2], fhp[3]);
286			fsidp->Fsid_dev.Minor = temp & 0x3FFFF;
287			fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);
288
289			temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
290			*inop = temp;
291
292			if (osnamep)
293			*osnamep = "SUNOS5";
294			break;
295
296			case FHT_ULTRIX:
297			fsidp->fsid_code = 0;
298			fsidp->Fsid_dev.Minor = fhp[0];
299			fsidp->Fsid_dev.Major = fhp[1];
300
301			temp = make_uint32(fhp[7], fhp[6], fhp[5], fhp[4]);
302			*inop = temp;
303			if (osnamep)
304			*osnamep = "Ultrix";
305			break;
306
307			case FHT_VMSUCX:
308			/* No numeric file system ID, so hash on the device-name */
309			if (sizeof(*fsidp) >= 14) {
310			if (sizeof(*fsidp) > 14)
311			memset((char )fsidp, 0, sizeof(fsidp));
312			/* just use the whole thing */
313			memcpy((char )fsidp, (char )fh, 14);
314			}
315			else {
316			u_int32_t tempa[4]; /* at least 16 bytes, maybe more */
317
318			memset((char *)tempa, 0, sizeof(tempa));
319			memcpy((char )tempa, (char )fh, 14); /* ensure alignment */
320			fsidp->Fsid_dev.Minor = tempa[0] + (tempa[1]<<1);
321			fsidp->Fsid_dev.Major = tempa[2] + (tempa[3]<<1);
322			fsidp->fsid_code = 0;
323			}
324
325			/* VMS file ID is: (RVN, FidHi, FidLo) */
326			*inop = make_uint32(fhp[26], fhp[27], fhp[23], fhp[22]);
327
328			/* Caller must save (and null-terminate?) this value */
329			if (fsnamep)
330			fsnamep = (char )&(fhp[1]);
331
332			if (osnamep)
333			*osnamep = "VMS";
334			break;
335
336			case FHT_AIX32:
337			fsidp->Fsid_dev.Minor = make_uint16(fhp[2], fhp[3]);
338			fsidp->Fsid_dev.Major = make_uint16(fhp[0], fhp[1]);
339			fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);
340
341			temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
342			*inop = temp;
343
344			if (osnamep)
345			*osnamep = "AIX32";
346			break;
347
348			case FHT_HPUX9:
349			fsidp->Fsid_dev.Major = fhp[0];
350			temp = make_uint24(fhp[1], fhp[2], fhp[3]);
351			fsidp->Fsid_dev.Minor = temp;
352			fsidp->fsid_code = make_uint32(fhp[4], fhp[5], fhp[6], fhp[7]);
353
354			temp = make_uint32(fhp[12], fhp[13], fhp[14], fhp[15]);
355			*inop = temp;
356
357			if (osnamep)
358			*osnamep = "HPUX9";
359			break;
360
361			case FHT_UNKNOWN:
362			#ifdef DEBUG
363			{
364			int i;
365			for (i = 0; i < 32; i++)
366			(void)fprintf(stderr, "%x.", fhp[i]);
367			(void)fprintf(stderr, "\n");
368			}
369			#endif
370			/* XXX for now, give "bogus" values to aid debugging */
371			fsidp->fsid_code = 0;
372			fsidp->Fsid_dev.Minor = 257;
373			fsidp->Fsid_dev.Major = 257;
374			*inop = 1;
375
376			/* display will show this string instead of (257,257) */
377			if (fsnamep)
378			*fsnamep = "Unknown";
379
380			if (osnamep)
381			*osnamep = "Unknown";
382			break;
383
384			}
385			}
386
387			/*
388			* Is this a VMS UCX file handle?
389			* Check for:
390			* (1) leading code byte [XXX not yet]
391			* (2) followed by string of printing chars & spaces
392			* (3) followed by string of nulls
393			*/
394			static int
395			is_UCX(fhp)
396			unsigned char *fhp;
397			{
398			int i;
399			int seen_null = 0;
400
401			for (i = 1; i < 14; i++) {
402			if (isprint(fhp[i])) {
403			if (seen_null)
404			return(0);
405			else
406			continue;
407			}
408			else if (fhp[i] == 0) {
409			seen_null = 1;
410			continue;
411			}
412			else
413			return(0);
414			}
415
416			return(1);
417			}