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/**
Copyright(c) Maynard Electronics, Inc. 1984-89
Name: lpbackup.c
Description: This module contains the entry point for the backup engine.
$Log: N:/LOGFILES/LPBACKUP.C_V $
Rev 1.12 14 Jan 1993 13:33:44 STEVEN
added stream_id to error message
Rev 1.11 24 Feb 1992 09:54:30 GREGG
Call TF_OpenTape at beginning of loop, Open/Close Set in loop, CloseTape at end.
Rev 1.10 04 Feb 1992 21:40:26 GREGG
Changed parameters in calls to TF_AllocateTapeBuffers and TF_FreeTapeBuffers.
Rev 1.9 16 Jan 1992 15:45:28 STEVEN
fix warnings for WIN32
Rev 1.8 13 Dec 1991 15:25:36 GREGG
SKATEBOARD - Initial Integration.
Rev 1.7 06 Nov 1991 19:04:40 GREGG
BIGWHEEL - 8200sx - Get cat_enabled from the BE config.
Rev 1.6 23 Aug 1991 17:00:34 STEVEN
added support for NORMAL/COPY/DIFERENTIAL/INCREMENTAL
Rev 1.5 21 Jun 1991 09:28:46 STEVEN
new config unit
Rev 1.4 30 May 1991 09:12:16 STEVEN
bsdu_err.h no longer exists
Rev 1.3 28 May 1991 09:59:38 STEVEN
use MAYN_MEM instead of MAYN_OS2
Rev 1.2 24 May 1991 14:42:34 STEVEN
complete changes for new getnext
Rev 1.1 23 May 1991 16:19:26 STEVEN
update for BSD redesign
Rev 1.0 09 May 1991 13:35:48 HUNTER
Initial revision.
**/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "stdtypes.h"
#include "queues.h"
#include "beconfig.h"
#include "msassert.h"
#include "tbe_defs.h"
#include "tbe_err.h"
#include "bsdu.h"
#include "fsys.h"
#include "tflproto.h"
#include "tfldefs.h"
#include "loops.h"
#include "loop_prv.h"
#include "lis.h"
#include "vm.h"
#include "get_next.h"
/**/
/**
Name: LP_Backup_Engine()
Description: this routine orchestrates backups on a volume by volume basis. it is the entry
point into the tape backup engine for the backup operation.
Modified: 5/23/1991 13:9:10
Returns: SUCCESS or error code from Tape Format or Loop error code
Notes:
See also: $/SEE( LP_Restore_Engine(), LP_Verify_Engine() )$
$/SEE( LP_Delete_Engine() )$
Declaration:
**/
INT16 LP_Backup_Engine(
LIS_PTR lis_ptr ) /* I - Loop Interface structure */
{
BSD_PTR bsd_ptr ;
GENERIC_DLE_PTR dle_ptr ;
LP_ENV_PTR lp ;
INT16 return_status = SUCCESS ;
INT16 status ;
UINT16 mem_save ;
UINT16 max_buffs ;
UINT16 buff_size ;
DBLK_PTR dblk_ptr ;
UINT16 tfl_open_mode = TF_WRITE_OPERATION ;
BE_CFG_PTR cfg ;
BOOLEAN tape_opened = FALSE ;
INT16 channel_no ;
THW_PTR sdrv ;
bsd_ptr = BSD_GetFirst( lis_ptr->bsd_list ) ;
msassert( bsd_ptr != NULL ) ;
lis_ptr->curr_bsd_ptr = bsd_ptr ;
cfg = BSD_GetConfigData( bsd_ptr ) ;
if ( cfg == NULL ) {
return OUT_OF_MEMORY ;
}
/* Allocate the loop environment structure */
if( ( lp = ( LP_ENV_PTR )calloc( 1, sizeof( LP_ENV ) ) ) == NULL ) {
/* we cannot use macro because it relies on the lp structure */
lis_ptr->message_handler( MSG_TBE_ERROR, lis_ptr->pid, bsd_ptr, NULL, NULL, LP_OUT_OF_MEMORY_ERROR, NULL, NULL ) ;
return LP_OUT_OF_MEMORY_ERROR ;
}
/* Set up the loop environment structure */
lp->lis_ptr = lis_ptr ;
lp->tpos.reference = ( UINT32 )lis_ptr ;
/* allocate DBLKs */
if( ( dblk_ptr = ( DBLK_PTR )calloc( 4, sizeof( DBLK ) ) ) == NULL ) {
LP_MsgError( lis_ptr->pid, bsd_ptr, NULL, &lp->tpos, LP_OUT_OF_MEMORY_ERROR, NULL, NULL, 0L ) ;
/* Free local allocations */
free( lp ) ;
return LP_OUT_OF_MEMORY_ERROR ;
}
/* set up the DBLK_PTRs in the Request/Reply structure */
lp->rr.vcb_ptr = dblk_ptr ;
lp->rr.ddb_ptr = dblk_ptr + 1 ;
lp->rr.fdb_ptr = dblk_ptr + 2 ; /* ASSUMPTION : */
lp->rr.idb_ptr = dblk_ptr + 2 ; /* no FS has both FDB & IDB */
lp->rr.cfdb_ptr = dblk_ptr + 3 ; /* CFDB needed during backup */
/* allocate CFDB data */
if( ( lp->rr.cfdb_data_ptr = ( GEN_CFDB_DATA_PTR )calloc( 1, sizeof( GEN_CFDB_DATA ) ) ) == NULL ) {
LP_MsgError( lis_ptr->pid, bsd_ptr, NULL, &lp->tpos, LP_OUT_OF_MEMORY_ERROR, NULL, NULL, 0L ) ;
/* Free local allocations */
free( dblk_ptr ) ;
free( lp ) ;
return LP_OUT_OF_MEMORY_ERROR ;
}
/* allocate buffers for operation */
mem_save = BEC_GetReserveMem( cfg ) ;
max_buffs = BEC_GetMaxTapeBuffers( cfg ) ;
buff_size = BEC_GetTFLBuffSize( cfg ) ;
return_status = TF_AllocateTapeBuffers( mem_save, max_buffs, buff_size ) ;
if( ( return_status != SUCCESS ) ) {
LP_MsgError( lis_ptr->pid, bsd_ptr, NULL, &lp->tpos, return_status, NULL, NULL, 0L ) ;
/* Free local allocations */
free( lp->rr.cfdb_data_ptr ) ;
free( dblk_ptr ) ;
free( lp ) ;
return( return_status ) ;
}
/* indicate the start of the operation */
LP_MsgStartOP( lis_ptr->pid, bsd_ptr, NULL, &lp->tpos ) ;
/* loop for each bsd */
do {
if( BSD_GetMarkStatus( bsd_ptr ) == NONE_SELECTED ) {
bsd_ptr = BSD_GetNext( bsd_ptr ) ;
continue ;
}
/* First attach to the drive */
dle_ptr = BSD_GetDLE( bsd_ptr ) ;
lis_ptr->curr_bsd_ptr = bsd_ptr ;
cfg = BEC_CloneConfig( BSD_GetConfigData( bsd_ptr ) ) ;
if ( cfg == NULL ) {
return_status = OUT_OF_MEMORY ;
break ;
}
BEC_UseConfig( cfg ) ;
if ( !BSD_CompatibleBackup( bsd_ptr) ) {
if ( BSD_SetArchiveBackup( bsd_ptr ) ) {
BEC_SetSetArchiveFlag( cfg, (BOOLEAN)TRUE ) ;
} else {
BEC_SetSetArchiveFlag( cfg, (BOOLEAN)FALSE ) ;
}
if ( BSD_ModFilesOnly( bsd_ptr ) ) {
BEC_SetModifiedOnlyFlag( cfg, (BOOLEAN)TRUE ) ;
} else {
BEC_SetModifiedOnlyFlag( cfg, (BOOLEAN)FALSE ) ;
}
}
/* Now attach to the dle */
if( ( return_status = FS_AttachToDLE( &lp->curr_fsys, dle_ptr, cfg, NULL, NULL ) ) == SUCCESS ) {
/* Set up the loop environment structure */
lp->get_spcl = TRUE ;
lp->seq_num = 1 ;
lp->start_new_dir = TRUE ;
lp->get_first_file = TRUE ;
lp->get_next_first_time = TRUE ;
lp->after_bs = FALSE ;
lp->curr_blk = &lp->dblk1 ;
lp->curr_ddb = &lp->dblk2 ;
lp->empty_blk = &lp->dblk3 ;
lp->pdl_q = NULL ;
lp->cat_enabled = (BOOLEAN)(BEC_GetCatalogLevel( cfg ) != CATALOGS_NONE) ;
lp->tpos.tape_id = BSD_GetTapeID( bsd_ptr ) ;
lp->tpos.tape_seq_num = BSD_GetTapeNum( bsd_ptr ) ;
lp->tpos.backup_set_num = BSD_GetSetNum( bsd_ptr ) ;
lp->tpos.UI_TapePosRoutine = lis_ptr->tape_pos_handler ;
lp->curr_dle = dle_ptr ;
sdrv = LP_DetermineStartingTPDrv( lis_ptr->oper_type, bsd_ptr, &lp->tpos, lis_ptr->auto_det_sdrv ) ;
if( !tape_opened ) {
tape_opened = TRUE ;
/* open the tape for operation */
if( ( return_status = TF_OpenTape( &channel_no, sdrv, &lp->tpos ) ) != SUCCESS ) {
LP_MsgError( lis_ptr->pid, bsd_ptr, lp->curr_fsys, &lp->tpos, return_status, NULL, NULL, 0L ) ;
}
}
if( return_status == SUCCESS ) {
/* Perform the operation */
return_status = LP_BackupDLE( bsd_ptr, lp, tfl_open_mode, channel_no, sdrv ) ;
LP_ClearPDL( lp ) ;
FS_DetachDLE( lp->curr_fsys ) ;
}
}
else if( return_status != USER_ABORT ) {
/* error attaching to the drive, just go on to next drive, if there is one */
LP_MsgError( lis_ptr->pid, bsd_ptr, NULL, &lp->tpos, LP_DRIVE_ATTACH_ERROR, NULL, NULL, 0L ) ;
/* reset return_status, and try the next bsd */
return_status = SUCCESS ;
}
BEC_ReleaseConfig( cfg ) ;
tfl_open_mode = TF_WRITE_APPEND ;
bsd_ptr = BSD_GetNext( bsd_ptr ) ;
} while( !return_status && (bsd_ptr != NULL) ) ;
if( tape_opened ) {
TF_CloseTape( channel_no ) ;
}
if( ( status = TF_FreeTapeBuffers( ) ) != SUCCESS ) {
LP_MsgError( lis_ptr->pid, lp->lis_ptr->curr_bsd_ptr,
NULL, &lp->tpos, status, NULL, NULL, 0L ) ;
}
/* indicate the end of the operation */
LP_MsgEndOP( lis_ptr->pid, lp->lis_ptr->curr_bsd_ptr, NULL, &lp->tpos ) ;
/* Free local allocations */
free( lp->rr.cfdb_data_ptr ) ;
free( dblk_ptr ) ;
free( lp ) ;
return( return_status ) ;
}
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