/*
 * Copyright 2000, International Business Machines Corporation and others.
 * All Rights Reserved.
 * 
 * This software has been released under the terms of the IBM Public
 * License.  For details, see the LICENSE file in the top-level source
 * directory or online at http://www.openafs.org/dl/license10.html
 */

#include <afsconfig.h>
#include <afs/param.h>

RCSID("$Header: /cvs/openafs/src/butc/recoverDb.c,v 1.5.2.1 2002/11/14 21:40:34 zacheiss Exp $");

#include <stdio.h>
#ifdef AFS_NT40_ENV
#include <winsock2.h>
#else
#include <sys/time.h>
#include <sys/file.h>
#include <netinet/in.h>
#include <netdb.h>
#include <strings.h>
#endif
#include <sys/types.h>
#include <rx/xdr.h>
#include <rx/rx.h>
#include <lwp.h>
#include <lock.h>
#include <afs/tcdata.h>
#include <afs/bubasics.h>
#include <afs/budb.h>
#include "error_macros.h"

#define BELLCHAR 7      			/* ascii for bell */

/* GLOBAL CONFIGURATION PARAMETERS */
extern int autoQuery;
extern int queryoperator;
extern int isafile;

/* Handle for the information read from all the tapes of a dump */
afs_int32 tapepos;      /* when read a label, remember its position */
struct tapeScanInfo
{
    struct butm_tapeLabel     tapeLabel, dumpLabel;
    struct budb_dumpEntry     dumpEntry;
    afs_int32    initialDumpId;
    int      addDbFlag;
};

extern struct tapeConfig globalTapeConfig;
extern struct deviceSyncNode *deviceLatch;

/* PrintDumpLabel
 *	print out the tape (dump) label.
 */

PrintDumpLabel(labelptr)
     struct butm_tapeLabel *labelptr;
{
    char tapeName[BU_MAXTAPELEN+32];

    printf("Dump label\n");
    printf("----------\n");
    TAPENAME(tapeName, labelptr->pName, labelptr->dumpid);
    printf("permanent tape name = %s\n", tapeName);
    TAPENAME(tapeName, labelptr->AFSName, labelptr->dumpid);
    printf("AFS tape name = %s\n", tapeName);
    printf("creationTime = %s", ctime(&labelptr->creationTime));
    if ( labelptr->expirationDate )
	printf("expirationDate = %s", cTIME(&labelptr->expirationDate));
    printf("cell = %s\n", labelptr->cell);
    printf("size = %u Kbytes\n", labelptr->size);
    printf("dump path = %s\n", labelptr->dumpPath);

    if ( labelptr->structVersion >= TAPE_VERSION_3 )
    {
	printf("dump id = %u\n", labelptr->dumpid);
	printf("useCount = %d\n", labelptr->useCount);
    }
    printf("-- End of dump label --\n\n");
}

/* PrintVolumeHeader
 *	print the contents of a volume header. 
 */
static
PrintVolumeHeader(volHeader)
     struct volumeHeader *volHeader;
{
    printf("-- volume --\n");
    printf("volume name: %s\n", volHeader->volumeName);
    printf("volume ID %d\n", volHeader->volumeID);
    /* printf("server %d\n", volHeader->server); */
    printf("dumpSetName: %s\n", volHeader->dumpSetName);
    printf("dumpID %d\n", volHeader->dumpID);
    printf("level %d\n", volHeader->level);
    printf("parentID %d\n", volHeader->parentID);
    printf("endTime %d\n", volHeader->endTime);
    /* printf("versionflags %d\n", volHeader->versionflags); */
    printf("clonedate %s\n", ctime(&volHeader->cloneDate));
}

/* Ask
 *	ask a question. returns true or false
 * exit:
 *	1 - yes
 *	0 - no
 */

afs_int32
Ask(st)
     char *st;
{
    int  response;

    while (1)
    {
	FFlushInput();
	putchar(BELLCHAR);
	printf("%s? (y/n) ", st);
	fflush(stdout);
	response = getchar();
	if      ( response == 'y' ) return(1);
	else if ( response == 'n' || response == EOF) return(0);
	printf("please answer y/n\n");
    }
}

/* Will read a dump, then see if there is a dump following it and
 * try to read that dump too.
 * The first tape label is the first dumpLabel.
 */
readDumps(taskId, tapeInfoPtr, scanInfoPtr)
    afs_uint32              taskId;
    struct butm_tapeInfo *tapeInfoPtr;
    struct tapeScanInfo  *scanInfoPtr;
{
    afs_int32 code, c;

    memcpy(&scanInfoPtr->dumpLabel, &scanInfoPtr->tapeLabel, sizeof(struct butm_tapeLabel));

    while(1)
    {
        code = readDump(taskId, tapeInfoPtr, scanInfoPtr);
	if (code) ERROR_EXIT(code);

	if (scanInfoPtr->tapeLabel.structVersion < TAPE_VERSION_4)
	    break;

	/* Remember the initial dump and see if appended dump exists */

	if (!scanInfoPtr->initialDumpId)
	      scanInfoPtr->initialDumpId = scanInfoPtr->dumpEntry.id;

	c = butm_ReadLabel(tapeInfoPtr, &scanInfoPtr->dumpLabel, 0);  /* no rewind */
	tapepos = tapeInfoPtr->position - 1;
	if (c) break;
    }

error_exit:
    return(code);
}

afs_int32 getScanTape(taskId, tapeInfoPtr, tname, tapeId, prompt, tapeLabelPtr)
    afs_int32                 taskId;
    struct butm_tapeInfo  *tapeInfoPtr;
    char                  *tname;
    afs_int32                 tapeId;
    int                   prompt;
    struct butm_tapeLabel *tapeLabelPtr;
{
    afs_int32 code = 0;
    int   tapecount = 1;
    afs_int32 curseq;
    char tapename[BU_MAXTAPELEN+32];
    char gotname[BU_MAXTAPELEN+32];

    while (1)
    {
        /* prompt for a tape */
        if (prompt)
	{
	    code = PromptForTape(SCANOPCODE, tname, tapeId, taskId, tapecount);
	    if (code) ERROR_EXIT(code);
	}
	prompt = 1;
	tapecount++;

	code = butm_Mount(tapeInfoPtr, "");		/* open the tape device */
	if (code) 
	{
	    TapeLog(0, taskId, code, tapeInfoPtr->error, "Can't open tape\n");
	    goto newtape;
	}

	/* read the label on the tape */
	code = butm_ReadLabel(tapeInfoPtr, tapeLabelPtr, 1);         /* rewind tape */
	if (code) 
	{
	    ErrorLog(0, taskId, code, tapeInfoPtr->error, "Can't read tape label\n");
	    goto newtape;
	}
	tapepos = tapeInfoPtr->position - 1;

	/* Now check that the tape is good */
	TAPENAME(tapename, tname, tapeId);
	TAPENAME(gotname, tapeLabelPtr->AFSName, tapeLabelPtr->dumpid);

	curseq = extractTapeSeq(tapeLabelPtr->AFSName);

	/* Label can't be null or a bad name */
	if ( !strcmp(tapeLabelPtr->AFSName,"") || (curseq <= 0) )
	{
	    TLog(taskId, "Expected tape with dump, label seen %s\n", gotname);
	    goto newtape;
	}

	/* Label can't be a database tape */
	if (databaseTape(tapeLabelPtr->AFSName))
	{
	    TLog(taskId, "Expected tape with dump. Can't scan database tape %s\n", gotname);
	    goto newtape;
	}

	/* If no name, accept any tape */
	if (strcmp(tname,"") == 0)
	{
	    break;                              /* Start scan on any tape */
#ifdef notdef
	    if (curseq == 1) break;                /* The first tape */
	    else
	    {
	        TLog(taskId, "Expected first tape of dump, label seen %s\n", gotname);
		goto newtape;
	    }
#endif
	}

	if ( strcmp(tname,tapeLabelPtr->AFSName) ||
	     ((tapeLabelPtr->structVersion >= TAPE_VERSION_3) &&
	      (tapeLabelPtr->dumpid != tapeId)) )
	{
	    TLog(taskId, "Tape label expected %s, label seen %s\n", tapename, gotname);
	    goto newtape;
	}

	/* We have the correct tape */
	break;

      newtape:
	unmountTape(taskId, tapeInfoPtr);
    }

error_exit:
    return(code);
}

/* ScanDumps
 *	This set of code fragments read a tape, and add the information to
 * 	the database. Builds a literal structure.
 *	
 */

ScanDumps(ptr)
     struct scanTapeIf   *ptr;
{
    struct butm_tapeInfo curTapeInfo;
    struct tapeScanInfo  tapeScanInfo;
    afs_uint32              taskId;
    afs_int32                code = 0;

    taskId = ptr->taskId;
    setStatus(taskId, DRIVE_WAIT);
    EnterDeviceQueue(deviceLatch);
    clearStatus(taskId, DRIVE_WAIT);

    printf("\n\n");
    if (ptr->addDbFlag) TLog(taskId, "ScanTape and add to the database\n");
    else                TLog(taskId, "Scantape\n");

    memset(&tapeScanInfo, 0, sizeof(tapeScanInfo));
    tapeScanInfo.addDbFlag = ptr->addDbFlag;

    memset(&curTapeInfo, 0, sizeof(curTapeInfo));
    curTapeInfo.structVersion = BUTM_MAJORVERSION;
    code = butm_file_Instantiate (&curTapeInfo, &globalTapeConfig);
    if (code)
    {
        ErrorLog(0, taskId, code, curTapeInfo.error, "Can't initialize tape module\n");
	ERROR_EXIT(code);
    }

    code = getScanTape(taskId, &curTapeInfo, "", 0, autoQuery, &tapeScanInfo.tapeLabel);
    if (code) ERROR_EXIT(code);

    code = readDumps(taskId, &curTapeInfo, &tapeScanInfo);
    if (code) ERROR_EXIT(code);

error_exit:
    unmountTape(taskId, &curTapeInfo);
    waitDbWatcher();

    if (code == TC_ABORTEDBYREQUEST)
    {
        ErrorLog(0, taskId, 0, 0, "Scantape: Aborted by request\n");
	clearStatus(taskId, ABORT_REQUEST);
	setStatus(taskId, ABORT_DONE);
    }
    else if (code)
    {
        ErrorLog(0, taskId, code, 0, "Scantape: Finished with errors\n");
	setStatus(taskId, TASK_ERROR);
    }
    else
    {
        TLog(taskId, "Scantape: Finished\n");
    }

    free(ptr);
    setStatus(taskId, TASK_DONE);
    LeaveDeviceQueue(deviceLatch);
    return(code);
}

/* scanVolData
 *	Skips the volume data on the tape. The end of the volume data is
 *	detected by the presence of the volume trailer or by an EOF indication
 *	from butm. This algorithm should be replaced by one that always
 *	detects based on the volume trailer, returning the trailer to the
 *	caller. This is of course more painful.
 * entry:
 *	curTapePtr - tape info structure
 *	Tape must be positioned after volume header
 * exit:
 *	0 - success
 *	3 - empty volume, requires special handling
 *
 *	Tape positioned after data, but before file end marker block.
 *	In case of errors, positioned after the error causing block
 */
#define BIGCHUNK 102400

static
scanVolData(taskId, curTapePtr, tapeVersion, volumeHeader, volumeTrailer, bytesRead)
     afs_int32                taskId;
     struct butm_tapeInfo *curTapePtr;
     afs_int32                tapeVersion;
     struct volumeHeader  *volumeHeader, *volumeTrailer;
     afs_uint32              *bytesRead;
{
    afs_int32 headBytes, tailBytes;
    char  *block = (char *) 0;
    char  *buffer[2];
    int   hasdata[2], curr, prev;
    afs_uint32 chunkSize = 0;
    afs_int32 nbytes;
    afs_int32 code = 0;
    afs_int32 rcode, tcode;

    memset(volumeHeader, 0, sizeof(struct volumeHeader));

    block = (char *) malloc(2*BUTM_BLOCKSIZE);
    if (!block) return(TC_NOMEMORY);
    buffer[0] = &block[sizeof(struct blockMark)];
    buffer[1] = &block[BUTM_BLOCKSIZE + sizeof(struct blockMark)];
    hasdata[0] = hasdata[1] = 0;
    curr = 0;

    tcode = NextFile(curTapePtr);  /* guarantees we are at a filemark */
    if (tcode) ERROR_EXIT(tcode)

    /* Read the FileBegin FileMark */
    code = butm_ReadFileBegin(curTapePtr);
    if (code)
    {
        /*
         * Tapes made with 3.0 have no software EOT markers. Therefore
	 * at this point, we will most likely get a read error, indicating
	 * the end of this dump
	 */
        if ( (tapeVersion == TAPE_VERSION_0) || (tapeVersion == TAPE_VERSION_1) )
	{
	    /*
	     * then a tape error is possible at this point, and it
	     * signals the end of the dump. Tapes that are continued
	     * have an EOT marker.
	     */
	    TapeLog(0, taskId, code, curTapePtr->error, "Read error - end-of-dump inferred\n");
	    code = BUTM_EOD;
	}

	if (code != BUTM_EOD)
	    ErrorLog(0, taskId, code, curTapePtr->error, "Can't read FileBegin on tape\n");
	ERROR_EXIT(code);
    }

    /* now read the volume header */
    code = ReadVolHeader(taskId, curTapePtr, volumeHeader);
    if (code) ERROR_EXIT(code);

    *bytesRead = 0;
    while (1)
    { /*w*/

        /* Check for abort in the middle of scanning data */
        if (*bytesRead >= chunkSize)
	{
	    if ( checkAbortByTaskId(taskId) ) 
	        ERROR_EXIT(TC_ABORTEDBYREQUEST);
	    chunkSize += BIGCHUNK;
	}

        /* 
	 * Read volume date - If prematurely hit the HW EOF 
	 * marker, check to see if data contains a volumetrailer.
	 */
        rcode = butm_ReadFileData(curTapePtr, buffer[curr], BUTM_BLKSIZE, &nbytes);
	if (rcode)
	{
	    hasdata[curr] = 0;
	    if ( (rcode == BUTM_EOF) || (rcode == BUTM_ENDVOLUME) ) break;

	    ErrorLog(0, taskId, rcode, curTapePtr->error, "Can't read FileData on tape\n");
	    ERROR_EXIT(rcode)
	}
	hasdata[curr] = 1;
	*bytesRead += nbytes;

	if ( (nbytes != BUTM_BLKSIZE) ||
	     (FindVolTrailer(buffer[curr], nbytes, &tailBytes, volumeTrailer)) )
	    break;

	curr = ((curr == 0) ? 1 : 0);          /* Switch buffers */
    } /*w*/

    /* Now verify that there is a volume trailer and its valid and copy it */
    prev = ((curr == 0) ? 1 : 0);
    if ( !FindVolTrailer2(buffer[prev], (hasdata[prev]?BUTM_BLKSIZE:0), &headBytes,
			  buffer[curr], nbytes                        , &tailBytes,
			  volumeTrailer) )
    {
        code = TC_MISSINGTRAILER;
        ErrorLog(0, taskId, code, 0, "Missing volume trailer on tape\n");
    }
    else
    {
        /* subtract size of the volume trailer from data read */
        *bytesRead -= sizeof(struct volumeHeader);    
    }
    
    /* 
     * If we didn't hit the EOF while reading data, read FileEnd marker 
     * or EOF marker. 
     */
    if (!rcode)
    {
        tcode = butm_ReadFileEnd(curTapePtr);
	if (tcode)
	{
	    ErrorLog(0, taskId, tcode, curTapePtr->error, "Can't read EOF on tape\n");
	    ERROR_EXIT(tcode);
	}
    }

error_exit:
    if (block) free(block);
    return(code);
}

/* nextTapeLabel
 *	generate the name of the next tape label expected
 * exit: 
 *	ptr to static string
 */

char *
nextTapeLabel(prevTapeName)
    char *prevTapeName;
{
    char *prevdot;
    char *retval;
    int  seq;
    static char buffer[BU_MAXTAPELEN];

    retval = "";

    /* extract information from previous tape label */
    strcpy(buffer, prevTapeName);
    prevdot = strrchr(buffer, '.');
    if (!prevdot) return(retval);
    prevdot++;

    seq = extractTapeSeq(prevTapeName);
    seq++;
    sprintf(prevdot, "%-d", seq);

    return(&buffer[0]);
}

/* readDump
 *	Read all the information on a tape. If to add to the database, queue
 *      onto list so another thread adds the entries to the database.
 * entry:
 *      taskid      - butc task number.
 *      tapeInfoPtr - Tape information.
 *      scanInfoPtr - Info to keep so we can add entries to the db.
 * exit:
 *	0     - tape scanned.
 *	non-0 - error. Abort the scan.
 *	moreTapes set to 1 if this is not the last tape in the dump,
 *                       0 if the last tape,
 *                      -1 don't know if last tape or not.
 */

afs_int32 RcreateDump();

static
readDump(taskId, tapeInfoPtr, scanInfoPtr)
     afs_uint32              taskId;
     struct butm_tapeInfo *tapeInfoPtr;
     struct tapeScanInfo  *scanInfoPtr;
{
    int moreTapes = 1;
    afs_int32 nbytes, flags, seq;
    int  newDump = 1, newTape = 1;
    afs_int32 tapePosition, c;
    afs_int32 code = 0, tcode;
    int  interactiveFlag, badscan;

    struct volumeHeader      volHeader, volTrailer;

    int good;
    struct budb_tapeEntry   tapeEntry;
    struct budb_volumeEntry volEntry;

    volEntry.dump = 0;
    PrintDumpLabel(&scanInfoPtr->dumpLabel);

    while (moreTapes)   /* While there is a tape to read */
    { /*t*/
        badscan = 0;
	while (1)                /* Read each volume on the tape */
	{ /*w*/
	    moreTapes = -1;
	    tapePosition = tapeInfoPtr->position;    /* remember position */

	    /*
	     * Skip the volume data
	     */
	    tcode = scanVolData(taskId, tapeInfoPtr, 
				scanInfoPtr->tapeLabel.structVersion, 
				&volHeader, &volTrailer, &nbytes);
	    if (tcode) {
		badscan++;

	        if (tcode == TC_ABORTEDBYREQUEST) {    /* Aborted */
		    ERROR_EXIT(tcode);
		}

	        if (tcode == BUTM_EOD) {
		    moreTapes = 0;            /* the end of the dump */
		    break;
		}

		/* Found a volume but it's incomplete. Skip over these */
		if (volHeader.volumeID) {
		   TapeLog(0, taskId, tcode, 0, 
			   "Warning: volume %s (%u) ignored. Incomplete\n",
			   volHeader.volumeName, volHeader.volumeID);
		   continue;
		}

		/* No volume was found. We may have hit the EOT or a 
		 * bad-spot. Try to skip over this spot.
		 */
		if (badscan < 2) {              /* allow 2 errors, then fail */
		   TapeLog(0, taskId, tcode, 0, 
			   "Warning: Error in scanning tape - will try skipping volume\n");
		   continue;
		}
		if (scanInfoPtr->tapeLabel.structVersion >= TAPE_VERSION_4) {
		   TapeLog(0, taskId, tcode, 0, 
			   "Warning: Error in scanning tape - end-of-tape inferred\n");
		   moreTapes = 1;              /* then assume next tape */
		}
		else {
		   ErrorLog(0, taskId, tcode, 0, "Error in scanning tape\n");
		   /* will ask if there is a next tape */
		}
		break;
	    }
	 
	    PrintVolumeHeader(&volHeader);

	    /* If this is not the first volume fragment, make sure it follows
	     * the last volume fragment 
	     */
	    if (volEntry.dump)
	    {
		if ( (volEntry.dump != volHeader.dumpID) ||
		     (volEntry.id   != volHeader.volumeID) ||
		     (volEntry.seq  != volHeader.frag - 2) ||
		     (strcmp(volEntry.name, volHeader.volumeName)) )
		{
		    TLog(taskId, 
			 "Warning: volume %s (%u) ignored. Incomplete - no last fragment\n",
			 volEntry.name, volEntry.id);

		    if (scanInfoPtr->addDbFlag)
		    {
			tcode = flushSavedEntries(DUMP_FAILED);
			if (tcode) ERROR_EXIT(tcode);
			volEntry.dump = 0;
		    }
		}
	    }

	    /* If this is the first volume fragment, make sure says so */
	    if (scanInfoPtr->addDbFlag && 
		!volEntry.dump && (volHeader.frag != 1))
	    {
	        TLog(taskId, 
		     "Warning: volume %s (%u) ignored. Incomplete - no first fragment\n",
		     volHeader.volumeName, volHeader.volumeID);
	    }

	    /* Check that this volume belongs to the dump we are scanning */
	    else if (scanInfoPtr->dumpLabel.dumpid && 
		     (volHeader.dumpID != scanInfoPtr->dumpLabel.dumpid) )
	    {
	        TLog(taskId, 
		     "Warning: volume %s (%u) ignored. Expected DumpId %u, got %u\n",
		     volHeader.volumeName, volHeader.volumeID,
		     scanInfoPtr->dumpLabel.dumpid, volHeader.dumpID);
	    }

	    /* Passed tests, Now add to the database (if dbadd flag is set) */
	    else if (scanInfoPtr->addDbFlag)
	    {
	        /* Have enough information to create a dump entry */
	        if (newDump)
		{
		    tcode = RcreateDump(scanInfoPtr, &volHeader);
		    if (tcode)
		    {
		        ErrorLog(0, taskId, tcode, 0, "Can't add dump %u to database\n",
				 volHeader.dumpID);
			ERROR_EXIT(tcode);
		    }
		    newDump = 0;
		}

		/* Have enough information to create a tape entry */
		if (newTape)
		{
		    seq = extractTapeSeq(scanInfoPtr->tapeLabel.AFSName);
		    if (seq < 0) ERROR_EXIT(TC_INTERNALERROR);

		    tcode = useTape(&tapeEntry,
				    volHeader.dumpID, 
				    TNAME(&scanInfoPtr->tapeLabel), seq,
				    scanInfoPtr->tapeLabel.useCount,
				    scanInfoPtr->dumpLabel.creationTime,
				    scanInfoPtr->dumpLabel.expirationDate,
				    tapepos);
		    if (tcode)
		    {
		        char gotName[BU_MAXTAPELEN+32];

			LABELNAME(gotName, &scanInfoPtr->tapeLabel);
		        ErrorLog(0, taskId, tcode, 0, 
				 "Can't add tape %s for dump %u to database\n",
				 gotName, volHeader.dumpID);
			ERROR_EXIT(tcode);
		    }
		    newTape = 0;
		}

		/* Create the volume entry */
		flags = ( (volHeader.frag == 1) ? BUDB_VOL_FIRSTFRAG : 0);
		if (!volTrailer.contd) flags |= BUDB_VOL_LASTFRAG;
		tcode = addVolume(&volEntry, 
				  volHeader.dumpID, 
				  TNAME(&scanInfoPtr->tapeLabel),
				  volHeader.volumeName,
				  volHeader.volumeID,
				  volHeader.cloneDate,
				  tapePosition, nbytes,
				  (volHeader.frag - 1), flags);
		if (tcode)
		{
		    ErrorLog(0, taskId, tcode, 0, 
			     "Can't add volume %s (%u) for dump %u to database\n",
			     volHeader.volumeName, volHeader.volumeID,
			     volHeader.dumpID);
		    ERROR_EXIT(tcode);
		}
	    }
	    
	    if (volTrailer.contd) 
	    {
	        /* No need to read the EOD marker, we know there is a next tape */
		moreTapes = 1;
		break;
	    }
	    else
	    {
	        if (scanInfoPtr->addDbFlag)
		{
		    tcode = flushSavedEntries(DUMP_SUCCESS);
		    if (tcode)
		       ERROR_EXIT(tcode);
		    volEntry.dump = 0;
		}
	    }
	} /*w*/

	if (!newTape)
	{
	    if (scanInfoPtr->addDbFlag)
	    {
		tcode = finishTape(&tapeEntry,
				  (tapeInfoPtr->kBytes + (tapeInfoPtr->nBytes ? 1 : 0)));
		if (tcode)
		{
		    char gotName[BU_MAXTAPELEN+32];
			
		    LABELNAME(gotName, &scanInfoPtr->tapeLabel);
		    ErrorLog(0, taskId, tcode, 0, 
			     "Can't mark tape %s 'completed' for dump %u in database\n",
			     gotName, tapeEntry.dump);
		    ERROR_EXIT(tcode);
		}
	    }
	}

	/* Ask if there is another tape if we can't figure it out */
	if (moreTapes == -1)
	    moreTapes = (queryoperator ? Ask("Are there more tapes") : 1);

	/* Get the next tape label */
	if (moreTapes)
	{
	    char *tapeName;
	    afs_int32 dumpid;

	    unmountTape(taskId, tapeInfoPtr);

	    tapeName = nextTapeLabel(scanInfoPtr->tapeLabel.AFSName);
	    dumpid   = scanInfoPtr->tapeLabel.dumpid;
	    tcode = getScanTape(taskId, tapeInfoPtr, tapeName, dumpid, 1, &scanInfoPtr->tapeLabel);
	    if (tcode) ERROR_EXIT(tcode);
	    newTape = 1;
	}
    } /*t*/

    if (!newDump)
    {
        if (scanInfoPtr->addDbFlag)
	{
	    tcode = finishDump(&scanInfoPtr->dumpEntry);
	    if (tcode)
	    {
	        ErrorLog(0, taskId, tcode, 0, 
			 "Can't mark dump %u 'completed' in database\n",
			 scanInfoPtr->dumpEntry.id);
	    }

	    tcode = flushSavedEntries(DUMP_SUCCESS);
	    if (tcode) ERROR_EXIT(tcode);
	}
    }

error_exit:
    return(code);
}

/* validatePath
 * exit:
 *	0 - not ok
 *	1 - ok
 */
validatePath(labelptr, pathptr)
     struct butm_tapeLabel *labelptr;
     char *pathptr;
{
    char *up, *tp;
    char tapeName[BU_MAXTAPELEN];

    /* check length */
    if ( strlen(pathptr) > BU_MAX_DUMP_PATH-1 )
    {
	fprintf(stderr, "Invalid pathname - too long\n");
	return(0);
    }

    if ( !labelptr ) return(1);

    strcpy(tapeName, labelptr->AFSName);

    tp = strrchr(tapeName, '.');
    if ( !tp ) return(1);
    tp++;

    up = strrchr(pathptr, '/');
    if ( !up )
    {
	fprintf(stderr, "Invalid path name, missing /\n");
    	return(0);
    }
    up++;

    if ( strcmp(up, tp) != 0 )
    {
	fprintf(stderr, "Invalid path name\n");
	fprintf(stderr, "Mismatch between tape dump name '%s' and users dump name '%s'\n",
		tp, up);
	return(0);
    }
    return(1);
}

/* volumesetNamePtr
 *	return a pointer to a (static) volume set name string.
 * entry:
 *	ptr - ptr to a dump name
 * exit:
 *	0 - error. Can't extract volumeset name.
 *	ptr - to static volumeset string.
 */

char *
volumesetNamePtr(ptr)
     char *ptr;
{
    static char vsname[BU_MAXUNAMELEN];
    char *dotPtr;
    int dotIndex;

    dotPtr = strchr(ptr, '.');
    if ( !dotPtr ) return(0);

    dotIndex = dotPtr - ptr;
    if ((dotIndex + 1) > sizeof(vsname)) return(0);	/* name too long */

    strncpy(&vsname[0], ptr, dotIndex);
    vsname[dotIndex] = 0;				/* ensure null terminated */

    return(&vsname[0]);
}

char *
extractDumpName(ptr)
     char *ptr;
{
    static char dname[BU_MAXTAPELEN];
    char *dotPtr;
    int dotIndex;

    dotPtr = strrchr(ptr, '.');
    if (!dotPtr) return(0);

    dotIndex = dotPtr - ptr;
    if ((dotIndex + 1) > sizeof(dname)) return(0);	/* name too long */

    strncpy(&dname[0], ptr, dotIndex);
    dname[dotIndex] = 0;				/* ensure null terminated */

    return(&dname[0]);
}

/* extractTapeSeq
 *	The routine assumes that tape names have an embedded sequence number
 *	as the trialing component. It is suggested that any tape naming
 *	changes retain the trailing seq. number
 * entry: 
 *	tapename - ptr to tape name 
 * exit:
 *	0 or positive - sequence number
 *	-1 - error, couldn't extract sequence number
 */

extractTapeSeq(tapename)
     char *tapename;
{
    char *sptr;

    sptr = strrchr(tapename, '.');
    if ( !sptr ) return(-1);
    sptr++;
    return(atol(sptr));
}

/* databaseTape
 *   returns true or false depending on whether the tape is 
 *   a database tape or not.
 */
int databaseTape(tapeName)
    char *tapeName;
{
    char *sptr;
    int  c;

    sptr = strrchr(tapeName, '.');
    if ( !sptr ) return(0);
    
    c = (int)( (afs_int32)sptr - (afs_int32)tapeName );
    if ( strncmp(tapeName, DUMP_TAPE_NAME, c) == 0 )
        return(1);

    return(0);
}

afs_int32 RcreateDump(tapeScanInfoPtr, volHeaderPtr)
    struct tapeScanInfo *tapeScanInfoPtr;
    struct volumeHeader *volHeaderPtr;
{
    afs_int32 code;
    struct butm_tapeLabel    *dumpLabelPtr  = &tapeScanInfoPtr->dumpLabel;
    struct budb_dumpEntry    *dumpEntryPtr  = &tapeScanInfoPtr->dumpEntry;

    /* construct dump entry */
    memset(dumpEntryPtr, 0, sizeof(struct budb_dumpEntry));
    dumpEntryPtr->id            = volHeaderPtr->dumpID;
    dumpEntryPtr->initialDumpID = tapeScanInfoPtr->initialDumpId;
    dumpEntryPtr->parent        = volHeaderPtr->parentID;
    dumpEntryPtr->level         = volHeaderPtr->level;
    dumpEntryPtr->created       = volHeaderPtr->dumpID;  /* time dump was created */
    dumpEntryPtr->flags         = 0;
    dumpEntryPtr->incTime       = 0;
    dumpEntryPtr->nVolumes      = 0;
    strcpy(dumpEntryPtr->volumeSetName, volumesetNamePtr(volHeaderPtr->dumpSetName));
    strcpy(dumpEntryPtr->dumpPath,      dumpLabelPtr->dumpPath);
    strcpy(dumpEntryPtr->name,          volHeaderPtr->dumpSetName);
    default_tapeset(&dumpEntryPtr->tapes, volHeaderPtr->dumpSetName);
    dumpEntryPtr->tapes.b = extractTapeSeq(dumpLabelPtr->AFSName);
    copy_ktcPrincipal_to_budbPrincipal(&dumpLabelPtr->creator, &dumpEntryPtr->dumper);

    code = bcdb_CreateDump(dumpEntryPtr);
    return(code);
}
