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volume.c
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volume.c
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/* $Id: volume.c 11.34 1999/09/11 17:05:14 Michiel Exp Michiel $ */
/* $Log: volume.c $
* Revision 11.34 1999/09/11 17:05:14 Michiel
* bugfix version 18.4
*
* Revision 11.33 1999/05/14 11:31:34 Michiel
* Long filename support implemented; bugfixes
*
* Revision 11.32 1999/03/23 05:57:39 Michiel
* Autoupgrade bug involving MODE_SUPERDELDIR fixed
*
* Revision 11.31 1999/03/09 10:32:19 Michiel
* 00136: 1024 byte sector support
*
* Revision 11.30 1999/02/22 16:25:30 Michiel
* Changes for increasing deldir capacity
*
* Revision 11.29 1998/09/27 11:26:37 Michiel
* Dynamic rootblock allocation in GetCurrentRoot
* New ErrorMsg function that replaces macro
*
* Revision 11.28 1998/05/30 18:40:14 Michiel
* Title of error requesters was wrong
*
* Revision 11.27 1998/05/27 21:00:08 Michiel
* MODE_DATESTAMP is automatically turned on
*
* Revision 11.26 1998/05/22 22:59:58 Michiel
* Datestamps added
*
* Revision 11.25 1997/03/03 22:04:04 Michiel
* Release 16.21
*
* Revision 11.24 1996/03/29 17:00:11 Michiel
* bugfix: rootblock was freed with FreeVec instead of with FreeBufmem
*
* Revision 11.23 1996/01/30 12:50:39 Michiel
* Diskinsertsequence didn't used old instead of just read rootblock
* --- working tree overlap ---
*
* Revision 11.22 1996/01/03 10:04:35 Michiel
* simple change
*
* Revision 11.21 1995/11/15 16:00:05 Michiel
* Rootblock extension detection, loading and automatic creation
*
* Revision 11.20 1995/11/07 15:07:18 Michiel
* Adapted to new datacache (16.2)
* FreeUnusedResources() checks if volume
*
* Revision 11.19 1995/09/01 11:18:05 Michiel
* CheckCurrentVolumeBack added
* NormalErrorMsg changed. Extra argument that specifies the
* number of targets added.
*
* Revision 11.18 1995/08/21 04:23:11 Michiel
* Create deldir if it isn't there
*
* Revision 11.17 1995/08/04 04:23:01 Michiel
* use of MODE_SIZEFIELD added
*
* Revision 11.16 1995/07/21 06:58:07 Michiel
* DELDIR adaptions: MakeVolumeData, FreeVolumeResources
*
* Revision 11.15 1995/07/11 17:29:31 Michiel
* ErrorMsg () calls use messages.c variables now.
*
* Revision 11.14 1995/07/11 09:23:36 Michiel
* DELDIR stuff
*
* Revision 11.13 1995/07/07 14:38:47 Michiel
* AFSLITE stuff
*
* Revision 11.12 1995/07/07 10:14:12 Michiel
* changed CheckVolume()
*
* Revision 11.11 1995/06/19 09:43:19 Michiel
* softprotect of on diskchange
*
* Revision 11.10 1995/06/16 09:59:37 Michiel
* using Allec & FreeBufMem
*
* Revision 11.9 1995/06/15 18:56:53 Michiel
* pooled mem
*
* Revision 11.8 1995/05/20 12:12:12 Michiel
* Updated messages to reflect Ami-FileLock
* CUTDOWN version
* protection update
*
* Revision 11.7 1995/03/30 18:55:39 Michiel
* Initialization of notifylist added to MakeVolumeData()
*
* Revision 11.6 1995/02/15 16:43:39 Michiel
* Release version
* Using new headers (struct.h & blocks.h)
*
* Revision 11.5 1995/01/29 07:34:57 Michiel
* Raw res read/write and LOCK update
*
* Revision 11.4 1995/01/24 09:54:14 Michiel
* Cache hashing added
*
* Revision 11.3 1995/01/18 04:29:34 Michiel
* Bugfixes. Now ready for beta release.
*
* Revision 11.2 1995/01/15 05:26:44 Michiel
* fixed FreeVolumeResources bug
* inhibited trackdisk specific parts
*
* Revision 11.1 1995/01/08 16:24:01 Michiel
* Compiled (new MODE_BIG version)
*
* Revision 10.4 1994/11/15 17:52:30 Michiel
* GURU book update
*
* Revision 10.3 1994/10/29 08:55:42 Michiel
* changed process references to msgport references
*
* Revision 10.2 1994/10/27 11:38:17 Michiel
* Killed old Update() routines, that now reside in new_Update()
* MakeBlockDirty() now unconditionally sets g->dirty
*
* Revision 10.1 1994/10/24 11:16:28 Michiel
* first RCS revision
* */
//#define DEBUG 1
//#define DEBUGMODE 1
#define __USE_SYSBASE
#include <exec/types.h>
#include <exec/memory.h>
#include <exec/devices.h>
#include <exec/io.h>
#include <exec/interrupts.h>
#include <devices/input.h>
#include <devices/timer.h>
#include <dos/filehandler.h>
#include <intuition/intuition.h>
#include <proto/intuition.h>
#include <clib/alib_protos.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <ctype.h>
#include "debug.h"
// own includes
#include "blocks.h"
#include "struct.h"
#include "directory_protos.h"
#include "volume_protos.h"
#include "disk_protos.h"
#include "allocation_protos.h"
#include "anodes_protos.h"
#include "update_protos.h"
#include "lru_protos.h"
#include "ass_protos.h"
#include "init_protos.h"
#include "format_protos.h"
#include "kswrapper.h"
static VOID CreateInputEvent(BOOL inserted, globaldata *g);
static BOOL GetCurrentRoot(struct rootblock **rootblock, globaldata *g);
/**********************************************************************/
/* DEBUG */
/**********************************************************************/
#ifdef DEBUG
extern BOOL debug;
static UBYTE debugbuf[120];
#define DebugOn debug++
#define DebugOff debug=(debug?debug-1:0)
#define DebugMsg(msg) if(debug) {NormalErrorMsg(msg, NULL); debug=0;}
#define DebugMsgNum(msg, num) sprintf(debugbuf, "%s 0x%08lx.", msg, num); \
if(debug) {NormalErrorMsg(debugbuf, NULL); debug=0;}
#define DebugMsgName(msg, name) sprintf(debugbuf, "%s >%s<.", msg, name); \
if(debug) {NormalErrorMsg(debugbuf, NULL); debug=0;}
#else
#define DebugOn
#define DebugOff
#define DebugMsg(m)
#define DebugMsgNum(msg,num)
#define DebugMsgName(msg, name)
#endif
/**********************************************************************/
/* NEWVOLUME */
/* NEWVOLUME */
/* NEWVOLUME */
/**********************************************************************/
/* NewVolume
**
** I Update diskchangenumber
** :nochange->exit (tenzij FORCE = TRUE)
**
** II New state = volume present?
** :get id of new disk (read rootblock)
** New disk = current disk?
** :exit
**
** III Old state = volume present?
** :diskremoved-sequence
**
** IV New state = volume present ?
** :diskinserted-sequence
**-----
** II-III-IV ordering is essential because diskremove-sequence has to be done before
** diskinsert-sequence and diskremove-sequence can only be executed if newvolume <>
** currentvolume
**-----
** DiskRemove-sequence
**
** I Clear globaldata->currentvolume (prevent infinite recursive loop)
**
** II Changed blocks in cache ?
** :request old volume (causes recursive call)
** :update volume
** :exit
**
** III Locks/files open on volume?
** yes: link locks in doslist
** clear volume task field
** no: remove volume from doslist
** free all volume resources
**-----
** DiskInsert-sequence
**
** I Search new disk in volumelist
** found: take over volume and locklist
** ~found: make new volumestructure
** link volume in doslist
**
** II Update globaldata->currentvolume
**----
** use FORCE to force a new volume even if the changecount is equal
*/
static BOOL SameDisk(struct rootblock *, struct rootblock *);
static BOOL SameDiskDL(struct rootblock *, struct DeviceList *);
static void TakeOverLocks(struct FileLock *, globaldata *);
static void DiskInsertSequence(struct rootblock *rootblock, globaldata *g);
static void DiskRemoveSequence(globaldata *g);
void NewVolume (BOOL FORCE, globaldata *g)
{
BOOL oldstate, newstate, changed;
struct rootblock *rootblock;
/* check if something changed */
changed = UpdateChangeCount (g);
if (!FORCE && !changed)
return;
if (!AttemptLockDosList(LDF_VOLUMES | LDF_WRITE))
return;
ENTER("NewVolume");
FlushDataCache (g);
/* newstate <=> there is a PFS disk present */
oldstate = g->currentvolume ? TRUE : FALSE;
newstate = GetCurrentRoot (&rootblock, g);
/* undo error enforced softprotect */
if ((g->softprotect == 1) && g->protectkey == ~0)
g->softprotect = g->protectkey = 0;
if (oldstate && !newstate)
DiskRemoveSequence (g);
if (newstate)
{
if (oldstate && SameDisk (rootblock, g->currentvolume->rootblk))
{
FreeBufmem (rootblock, g); /* @XLVII */
}
else
{
if (oldstate)
DiskRemoveSequence (g);
DiskInsertSequence (rootblock, g);
}
}
else
{
g->currentvolume = NULL; /* @XL */
}
UnLockDosList(LDF_VOLUMES | LDF_WRITE);
UpdateAndMotorOff(g);
EXIT("NewVolume");
}
/* pre:
** globaldata->currentvolume not necessarily present
** post:
** the old currentvolume is updated en als 'removed' currentvolume == 0
** return waarde = currentdisk back in drive?
** used by NewVolume and ACTION_INHIBIT
*/
static void DiskRemoveSequence(globaldata *g)
{
struct volumedata *oldvolume = g->currentvolume;
ENTER("DiskRemoveSequence");
/* -I- update disk
** will ask for old volume if there are unsaved changes
** causes recursive NewVolume call. That's why 'currentvolume'
** has to be cleared first; UpdateDisk won't be called for the
** same disk again
*/
if(oldvolume && g->dirty)
{
RequestCurrentVolumeBack(g);
UpdateDisk(g);
return;
}
/* disk removed */
g->currentvolume = NULL;
FlushDataCache (g);
/* -II- link locks in doslist
** lockentries: link to doslist...
** fileentries: link them too...
*/
if(!IsMinListEmpty(&oldvolume->fileentries))
{
DB(Trace(1, "DiskRemoveSequence", "there are locks\n"));
oldvolume->devlist->dl_LockList = MKBADDR(&(((listentry_t *)(HeadOf(&oldvolume->fileentries)))->lock));
oldvolume->devlist->dl_Task = NULL;
FreeUnusedResources(oldvolume, g);
}
else
{
DB(Trace(1, "DiskRemoveSequence", "removing doslist\n"));
RemDosEntry((struct DosList*)oldvolume->devlist);
FreeDosEntry((struct DosList*)oldvolume->devlist);
MinRemove(oldvolume);
FreeVolumeResources(oldvolume, g);
}
#ifdef TRACKDISK
if(g->trackdisk)
{
g->request->iotd_Req.io_Command = CMD_CLEAR;
DoIO((struct IORequest*)g->request);
}
#endif
CreateInputEvent(FALSE, g);
#if ACCESS_DETECT
g->tdmode = ACCESS_UNDETECTED;
#endif
EXIT("DiskRemoveSequence");
return;
}
BOOL SafeDiskRemoveSequence(globaldata *g)
{
while (g->currentvolume) { /* inefficient.. */
if (AttemptLockDosList(LDF_VOLUMES | LDF_WRITE)) {
DiskRemoveSequence(g);
UnLockDosList(LDF_VOLUMES | LDF_WRITE);
} else {
return FALSE;
}
}
return TRUE;
}
static void DiskInsertSequence(struct rootblock *rootblock, globaldata *g)
{
struct DosList *doslist;
struct DosInfo *di;
struct DeviceList *devlist;
BOOL found = FALSE, added = FALSE;
UBYTE diskname[DNSIZE]; // or should it be a DSTR??
SIPTR locklist;
ENTER("DiskInsertSequence");
/* -I- Search new disk in volumelist */
BCPLtoCString(diskname, rootblock->diskname);
di = BADDR(((struct RootNode *)DOSBase->dl_Root)->rn_Info);
doslist = BADDR(di->di_DevInfo);
for (doslist = BADDR(di->di_DevInfo);doslist;doslist = BADDR(doslist->dol_Next))
{
if (doslist->dol_Type == DLT_VOLUME && SameDiskDL(rootblock, (struct DeviceList *)doslist))
{
found = TRUE;
break;
}
}
// while(!found)
// {
// doslist = NextDosEntry(doslist, LDF_VOLUMES);
//
// if(doslist && (doslist = FindDosEntry(doslist, diskname, LDF_VOLUMES)))
// found = SameDiskDL(rootblock, (struct DeviceList *)doslist);
// else
// break;
// }
if (found)
{
DB(Trace(1, "DiskInsertSequence", "found\n"));
devlist = (struct DeviceList *)doslist;
locklist = (SIPTR)BADDR(devlist->dl_LockList);
/* take over volume
** use LOCKTOFILEENTRY(lock)->volume to get volumepointer
*/
if(locklist)
{
fileentry_t *fe;
/* get volumepointer @XLXV */
fe = LOCKTOFILEENTRY(locklist);
if(fe->le.type.flags.type == ETF_VOLUME)
g->currentvolume = fe->le.info.volume.volume;
else
g->currentvolume = fe->le.volume;
/* update rootblock */
if (g->rootblock) FreeBufmem (g->rootblock, g);
g->rootblock =
g->currentvolume->rootblk = rootblock;
/* take over filelocks
** lockentries: takeover, change taskfield
** fileentries: don't change taskfield
*/
TakeOverLocks((struct FileLock *)locklist, g);
devlist = (struct DeviceList *)doslist;
devlist->dl_LockList = 0;
devlist->dl_Task = g->msgport;
}
else
{
RemDosEntry(doslist); // @@ freeing rootblk etc?
FreeDosEntry(doslist);
found = FALSE; // an empty doslistentry is useless to us
}
}
if(!found)
{
DB(Trace(1, "DiskInsertSequence", "not found %s\n", diskname));
/* make new doslist entry (MOET eerst (zie blz67 schrift) */
devlist = (struct DeviceList *)MakeDosEntry(diskname, DLT_VOLUME);
if(devlist)
{
/* devlist invullen. Diskname NIET @XLIX */
devlist->dl_Task = g->msgport;
devlist->dl_VolumeDate.ds_Days = rootblock->creationday;
devlist->dl_VolumeDate.ds_Minute = rootblock->creationminute;
devlist->dl_VolumeDate.ds_Tick = rootblock->creationtick;
devlist->dl_LockList = 0; // no locks open yet
devlist->dl_DiskType = rootblock->disktype;
added = AddDosEntry((struct DosList *)devlist);
}
/* make new volumestructure for inserted volume */
g->currentvolume = MakeVolumeData(rootblock, g);
MinAddHead(&g->volumes, g->currentvolume);
g->currentvolume->devlist = (struct DeviceList *)devlist;
/* check if things worked out */
if(!devlist || !added) // duplicate disks or out of memory
{
ErrorMsg (AFS_ERROR_DOSLIST_ADD, NULL, g);
if(devlist)
FreeDosEntry((struct DosList *)devlist);
FreeVolumeResources(g->currentvolume, g);
g->currentvolume = NULL;
}
CreateInputEvent(TRUE, g);
}
/* Reconfigure modules to new volume */
InitModules (g->currentvolume, FALSE, g);
/* create rootblockextension if its not there yet */
if (!g->currentvolume->rblkextension &&
g->diskstate != ID_WRITE_PROTECTED)
{
MakeRBlkExtension (g);
}
#if DELDIR
/* upgrade deldir */
if (rootblock->deldir)
{
struct cdeldirblock *ddblk;
int i, nr;
/* kill current deldir */
ddblk = (struct cdeldirblock *)AllocLRU(g);
if (ddblk)
{
if (RawRead ((UBYTE*)&ddblk->blk, RESCLUSTER, rootblock->deldir, g) == 0)
{
if (ddblk->blk.id == DELDIRID)
{
for (i=0; i<31; i++)
{
nr = ddblk->blk.entries[i].anodenr;
if (nr)
FreeAnodesInChain(nr, g);
}
}
}
FreeLRU ((struct cachedblock *)ddblk);
}
/* create new deldir */
SetDeldir(1, g);
ResToBeFreed(rootblock->deldir, g);
rootblock->deldir = 0;
rootblock->options |= MODE_SUPERDELDIR;
}
#endif
/* update datestamp and enable */
rootblock->options |= MODE_DATESTAMP;
rootblock->datestamp++;
g->dirty = TRUE;
EXIT("DiskInsertSequence");
}
/* check if rootblocks are of the same disk */
static BOOL SameDisk(struct rootblock *disk1, struct rootblock *disk2)
{
BOOL result;
result = disk1->creationday == disk2->creationday &&
disk1->creationminute == disk2->creationminute &&
disk1->creationtick == disk2->creationtick &&
ddstricmp(disk1->diskname, disk2->diskname);
return(result);
}
/* checks is devicelist belongs to rootblock */
static BOOL SameDiskDL(struct rootblock *disk1, struct DeviceList *disk2)
{
BOOL result;
result = ddstricmp(disk1->diskname, BADDR(disk2->dl_Name)) &&
disk1->creationday == disk2->dl_VolumeDate.ds_Days &&
disk1->creationminute == disk2->dl_VolumeDate.ds_Minute &&
disk1->creationtick == disk2->dl_VolumeDate.ds_Tick;
return(result);
}
/* make and fill in volume structure
* uses g->geom!
* returns 0 is fails
*/
struct volumedata *MakeVolumeData (struct rootblock *rootblock, globaldata *g)
{
struct volumedata *volume;
struct MinList *list;
ENTER("MakeVolumeData");
volume = AllocMemPR (sizeof(struct volumedata), g);
volume->rootblk = rootblock;
volume->rootblockchangeflag = FALSE;
/* lijsten initieren */
for (list = &volume->fileentries; list <= &volume->notifylist; list++)
NewList((struct List *)list);
/* andere gegevens invullen */
volume->numsofterrors = 0;
volume->diskstate = ID_VALIDATED;
/* these could be put in rootblock @@ see also HD version */
volume->numblocks = g->geom->dg_TotalSectors >> g->blocklogshift;
volume->bytesperblock = BLOCKSIZE;
volume->rescluster = rootblock->reserved_blksize / volume->bytesperblock;
/* Calculate minimum fake block size that keeps total block count less than 16M.
* Workaround for programs (including WB) that calculate free space using
* "in use * 100 / total" formula that overflows if in use is block count is larger
* than 16M blocks with 512 block size. Used only in ACTION_INFO.
*/
g->infoblockshift = 0;
if (g->largeDiskSafeOS) {
UWORD blockshift = 0;
ULONG bpb = volume->bytesperblock;
while (bpb > 512) {
blockshift++;
bpb >>= 1;
}
// Calculate smallest safe fake block size, up to max 32k. (512=0,1024=1,..32768=6)
while ((volume->numblocks >> blockshift) >= 0x02000000 && g->infoblockshift < 6) {
g->infoblockshift++;
blockshift++;
}
}
/* load rootblock extension (if it is present) */
if (rootblock->extension && (rootblock->options & MODE_EXTENSION))
{
struct crootblockextension *rext;
rext = AllocBufmemR (sizeof(struct cachedblock) + rootblock->reserved_blksize, g);
memset (rext, 0, sizeof(struct cachedblock) + rootblock->reserved_blksize);
if (RawRead ((UBYTE *)&rext->blk, volume->rescluster, rootblock->extension, g) != 0)
{
ErrorMsg (AFS_ERROR_READ_EXTENSION, NULL, g);
FreeBufmem (rext, g);
rootblock->options ^= MODE_EXTENSION;
}
else
{
if (rext->blk.id == EXTENSIONID)
{
volume->rblkextension = rext;
rext->volume = volume;
rext->blocknr = rootblock->extension;
}
else
{
ErrorMsg (AFS_ERROR_EXTENSION_INVALID, NULL, g);
FreeBufmem (rext, g);
rootblock->options ^= MODE_EXTENSION;
}
}
}
else
{
volume->rblkextension = NULL;
}
EXIT("MakeVolumeData");
return volume;
}
/* fill in my process at the task fields of the locks */
static void TakeOverLocks (struct FileLock *locklist, globaldata *g)
{
while (locklist)
{
locklist->fl_Task = g->msgport;
locklist = (struct FileLock *)BADDR(locklist->fl_Link);
}
}
/* free all resources (memory) taken by volume accept doslist
** it is assumed all this data can be discarded (not checked here!)
** it is also assumed this volume is no part of any volumelist
*/
void FreeVolumeResources(struct volumedata *volume, globaldata *g)
{
ENTER("Free volume resources");
if (volume)
{
FreeUnusedResources (volume, g);
#if VERSION23
if (volume->rblkextension)
FreeBufmem (volume->rblkextension, g);
#endif
#if DELDIR
// if (g->deldirenabled)
// FreeBufmem (volume->deldir, g);
#endif
FreeBufmem (volume->rootblk, g);
FreeMemP (volume, g);
}
EXIT("FreeVolumeResources");
}
void FreeUnusedResources(struct volumedata *volume, globaldata *g)
{
struct MinList *list;
struct MinNode *node, *next;
ENTER("FreeUnusedResources");
/* check if volume passed */
if (!volume)
return;
/* start with anblks!, fileentries are to be kept! */
for (list = volume->anblks; list<=&volume->bmindexblks; list++)
{
node = (struct MinNode *)HeadOf(list);
while ((next = node->mln_Succ))
{
FlushBlock((struct cachedblock *)node, g);
FreeLRU((struct cachedblock *)node);
node = next;
}
}
}
/* CreateInputEvent
**
** generate a `disk inserted/removed' event, in order to get Workbench to
** rescan the DosList and update the list of volume icons.
**
** function supplied by Nicola Salmoria
*/
static VOID CreateInputEvent(BOOL inserted, globaldata *g)
{
struct MsgPort *port;
port = CreateMsgPort();
if (port)
{
struct IOStdReq *io;
#ifdef __SASC
io = CreateStdIO(port);
#else
io = CreateIORequest(port, sizeof(*io));
#endif
if (io)
{
if (!OpenDevice("input.device",0,(struct IORequest *)io,0))
{
struct InputEvent ie;
memset(&ie,0,sizeof(struct InputEvent));
ie.ie_Class = inserted ? IECLASS_DISKINSERTED : IECLASS_DISKREMOVED;
io->io_Command = IND_WRITEEVENT;
io->io_Data = &ie;
io->io_Length = sizeof(struct InputEvent);
DoIO((struct IORequest *)io);
CloseDevice((struct IORequest *)io);
}
#ifdef __SASC
DeleteStdIO(io);
#else
DeleteIORequest(io);
#endif
}
DeleteMsgPort(port);
}
}
/**********************************************************************/
/* OTHER VOLUMEROUTINES */
/* OTHER VOLUMEROUTINES */
/* OTHER VOLUMEROUTINES */
/**********************************************************************/
/* Update the changecount
** returns TRUE if changecount changed
*/
BOOL UpdateChangeCount(globaldata *g)
{
struct IOExtTD *request = g->request;
ULONG changecount;
BOOL result;
if(g->removable)
{
ENTER("UpdateChangeCount");
request->iotd_Req.io_Command = TD_CHANGENUM;
if(DoIO((struct IORequest *)request) == 0)
changecount = request->iotd_Req.io_Actual;
else
changecount = ~0;
result = (changecount != g->changecount);
g->changecount = changecount;
return(result);
}
else
{
return 0; /* no change */
}
}
/* checks if disk is changed. If so calls NewVolume()
** NB: new volume might be NOVOLUME or NOTAFDSDISK
*/
void UpdateCurrentDisk(globaldata *g)
{
NewVolume(0, g);
}
/* CheckVolume checks if a volume (ve lock) is (still) present.
** If volume==NULL (no disk present) then FALSE is returned (@XLII).
** result: requested volume present/not present TRUE/FALSE
*/
BOOL CheckVolume(struct volumedata *volume, BOOL write, SIPTR *error, globaldata *g)
{
if(!volume || !g->currentvolume)
{
switch(g->disktype)
{
case ID_UNREADABLE_DISK:
case ID_NOT_REALLY_DOS:
*error = ERROR_NOT_A_DOS_DISK;
return(DOSFALSE);
case ID_NO_DISK_PRESENT:
if(!volume && !g->currentvolume)
{
*error = ERROR_NO_DISK;
return(DOSFALSE);
}
default:
*error = ERROR_DEVICE_NOT_MOUNTED;
return(DOSFALSE);
}
}
else if(g->currentvolume == volume)
{
switch(g->diskstate)
{
case ID_WRITE_PROTECTED:
if(write)
{
*error = ERROR_DISK_WRITE_PROTECTED;
return(DOSFALSE);
}
case ID_VALIDATING:
if(write)
{
*error = ERROR_DISK_NOT_VALIDATED;
return(DOSFALSE);
}
case ID_VALIDATED:
if(write && g->softprotect)
{
*error = ERROR_DISK_WRITE_PROTECTED;
return(DOSFALSE);
}
default:
return(DOSTRUE);
}
}
else
{
*error = ERROR_DEVICE_NOT_MOUNTED;
return(DOSFALSE);
}
}
/**********************************************************************/
/* REQUESTERS */
/* REQUESTERS */
/* REQUESTERS */
/**********************************************************************/
/*
* ErrorMsg wrapper function
*/
LONG ErrorMsg(CONST_STRPTR msg, APTR arg, globaldata *g)
{
LONG rv;
char charbuffer[256], *b;
b = stpcpy(charbuffer, "Device ");
strncpy(b, &g->mountname[1], g->mountname[0]);
b += g->mountname[0];
b = stpcpy(b, ":\n");
b = stpcpy(b, msg);
rv = (g->ErrorMsg)(charbuffer,arg,1,g);
if (!g->softprotect) {
g->softprotect = 1;
g->protectkey = ~0;
}
if (g->currentvolume)
g->currentvolume->numsofterrors++;
return rv;
}
/* All possible ErrorMsg routines
**
** Displays easyrequest with error message
** Intuition library has to be opened
*/
static const CONST_STRPTR gadgets[] =
{
"OK", "RETRY|CANCEL"
};
LONG _NormalErrorMsg(CONST_STRPTR melding, APTR arg, ULONG notargets, globaldata *g)
{
struct EasyStruct req;
/*
* Make sure we don't hold the performance semaphore while displaying
* a requester. Note that unlock_device_unit is safe to call multiple
* times, and even when not holding a lock. Unlock also is safe to call
* before init has been called.
*/
unlock_device_unit(g);
req.es_StructSize = sizeof(req);
req.es_Flags = 0;
req.es_Title = "PFS-III Error Requester";
req.es_TextFormat = (STRPTR)melding;
req.es_GadgetFormat = (STRPTR)gadgets[notargets-1];
return EasyRequestArgs(NULL, &req, NULL, arg);
}
/* Don't show up a error requester. Used by GetCurrentRoot */
static LONG NoErrorMsg(CONST_STRPTR melding, APTR arg, ULONG dummy, globaldata *g)
{
return 0;
}
/***********************************************************************/
/* LOWLEVEL */
/* LOWLEVEL */
/* LOWLEVEL */
/***********************************************************************/
/* Load the rootblock of the volume that is currently in the drive.
* Returns FLASE if no disk or no PFS disk and TRU if it is a PFS disk.
* Sets disktype in globaldata->disktype
* Should NOT change globaldata->currentvolume
*
* Allocates space in 'rootblock' which is freed if an error occurs.
*/
#ifdef TRACKDISK
static void UpdateDosEnvec(globaldata *g);
#endif
// if we have original geometry: simply copy it over
static void GetExtBlockGeometry(struct rootblock *rootblock, ULONG rblsize, globaldata *g)
{
struct rootblockextension *rext;
ULONG *env = (ULONG *)g->dosenvec;
if (g->trackdisk || env[DE_LOWCYL] != 0 || !(rootblock->options & MODE_EXTENSION) || !(rootblock->options & MODE_STORED_GEOM))
return;
rext = AllocBufmemR(rblsize << BLOCKSHIFT, g);
if (RawRead((UBYTE *)rext, rblsize, rootblock->extension, g) != 0) {
int minlen = env[0] > rext->dosenvec[0] ? rext->dosenvec[0] : env[0];
if (minlen > 10)
minlen = 10; // de_SizeBlock to de_HighCyl
memcpy(&env[1], &rext->dosenvec[1], minlen * sizeof(ULONG));
GetDriveGeometry(g);
}
FreeBufmem(rext, g);
}
static WORD IsRBBlock(UBYTE *rbpt)
{
struct rootblock *rootblock = (struct rootblock*)rbpt;
if (rootblock->disktype != ID_PFS_DISK && rootblock->disktype != ID_PFS2_DISK)
return 0;
if (rootblock->options == 0 || rootblock->reserved_blksize == 0)
return -1; // boot block
return 1; // root block
}
static BOOL GetCurrentRoot(struct rootblock **rootblock, globaldata *g)
{