-
Notifications
You must be signed in to change notification settings - Fork 5
/
Copy pathmounter.c
1484 lines (1350 loc) · 39.2 KB
/
mounter.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// Generic autoboot/automount RDB parser and mounter.
// - KS 1.3 support, including autoboot mode.
// - 68000 compatible.
// - Boot ROM and executable modes.
// - Autoboot capable (Boot ROM mode only).
// - Full automount support
// - Full RDB filesystem support.
//
// Copyright 2021-2022 Toni Wilen
//
// 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.
//
#ifdef DEBUG_MOUNTER
#define USE_SERIAL_OUTPUT
#endif
#include "port.h"
#include <exec/types.h>
#include <exec/memory.h>
#include <exec/alerts.h>
#include <exec/ports.h>
#include <exec/execbase.h>
#include <exec/io.h>
#include <devices/trackdisk.h>
#include <devices/hardblocks.h>
#include <devices/scsidisk.h>
#include <resources/filesysres.h>
#include <libraries/expansion.h>
#include <libraries/expansionbase.h>
#include <libraries/configvars.h>
#include <clib/alib_protos.h>
#include <dos/dos.h>
#include <dos/dosextens.h>
#include <dos/doshunks.h>
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include <proto/exec.h>
#include <proto/expansion.h>
#include <proto/dos.h>
#include "scsimsg.h"
#include "ndkcompat.h"
#include "mounter.h"
#include "device.h"
#include "a4091.h"
#include "attach.h"
#include "legacy.h"
#define TRACE 1
#undef TRACE_LSEG
#define Trace printf
#ifdef TRACE_LSEG
#define dbg_lseg printf
#else
#define dbg_lseg(x...) do { } while (0)
#endif
#if TRACE
#define dbg Trace
#else
#define dbg
#endif
#define MAX_BLOCKSIZE 2048
#define LSEG_DATASIZE (512 / 4 - 5)
#if NO_CONFIGDEV
extern UBYTE entrypoint, entrypoint_end;
extern UBYTE bootblock, bootblock_end;
#endif
struct MountData
{
struct ExecBase *SysBase;
struct ExpansionBase *ExpansionBase;
struct DosLibrary *DOSBase;
struct IOExtTD *request;
struct ConfigDev *configDev;
const UBYTE *creator;
const UBYTE *devicename;
ULONG lsegblock;
ULONG lseglongs;
ULONG lsegoffset;
struct LoadSegBlock *lsegbuf;
UWORD lsegwordbuf;
UWORD lseghasword;
ULONG unitnum;
LONG ret;
UBYTE buf[MAX_BLOCKSIZE * 3];
UBYTE zero[2];
BOOL wasLastDev;
BOOL wasLastLun;
BOOL slowSpinup;
int blocksize;
};
// KS 1.3 compatibility functions
APTR W_CreateIORequest(struct MsgPort *ioReplyPort, ULONG size, struct ExecBase *SysBase)
{
struct IORequest *ret = NULL;
if(ioReplyPort == NULL)
return NULL;
ret = (struct IORequest*)AllocMem(size, MEMF_PUBLIC | MEMF_CLEAR);
if(ret != NULL)
{
ret->io_Message.mn_ReplyPort = ioReplyPort;
ret->io_Message.mn_Length = size;
}
return ret;
}
void W_DeleteIORequest(APTR iorequest, struct ExecBase *SysBase)
{
if(iorequest != NULL) {
FreeMem(iorequest, ((struct Message*)iorequest)->mn_Length);
}
}
struct MsgPort *W_CreateMsgPort(struct ExecBase *SysBase)
{
struct MsgPort *ret;
ret = (struct MsgPort*)AllocMem(sizeof(struct MsgPort), MEMF_PUBLIC | MEMF_CLEAR);
if(ret != NULL)
{
BYTE sb = AllocSignal(-1);
if (sb != -1)
{
ret->mp_Flags = PA_SIGNAL;
ret->mp_Node.ln_Type = NT_MSGPORT;
NewList(&ret->mp_MsgList);
ret->mp_SigBit = sb;
ret->mp_SigTask = FindTask(NULL);
return ret;
}
FreeMem(ret, sizeof(struct MsgPort));
}
return NULL;
}
void W_DeleteMsgPort(struct MsgPort *port, struct ExecBase *SysBase)
{
if(port != NULL)
{
FreeSignal(port->mp_SigBit);
FreeMem(port, sizeof(struct MsgPort));
}
}
// Flush cache (Filesystem relocation)
static void cacheclear(struct MountData *md)
{
struct ExecBase *SysBase = md->SysBase;
if (SysBase->LibNode.lib_Version >= 37) {
CacheClearU();
}
}
// Simply memory copy.
// Only used for few short copies, it does not need to be optimal.
// Required because compiler built-in memcpy() can have
// extra dependencies which will make boot rom build
// impossible.
static void copymem(void *dstp, void *srcp, UWORD size)
{
UBYTE *dst = (UBYTE*)dstp;
UBYTE *src = (UBYTE*)srcp;
while (size != 0) {
*dst++ = *src++;
size--;
}
}
// Check block checksum
static UWORD checksum(UBYTE *buf, struct MountData *md)
{
ULONG chk = 0;
ULONG num_longs;
num_longs = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | (buf[7]);
if (num_longs > 65535)
return FALSE;
for (UWORD i = 0; i < (int)(num_longs * sizeof(LONG)); i += 4) {
ULONG v = (buf[i + 0] << 24) | (buf[i + 1] << 16) | (buf[i + 2] << 8) | (buf[i + 3 ] << 0);
chk += v;
}
if (chk) {
dbg("Checksum error %08"PRIx32"\n", chk);
return FALSE;
}
return TRUE;
}
#define MAX_RETRIES 3
// Read single block with retries
static BOOL readblock(UBYTE *buf, ULONG block, ULONG id, struct MountData *md)
{
struct ExecBase *SysBase = md->SysBase;
struct IOExtTD *request = md->request;
UWORD i, max_retries = MAX_RETRIES;
if (md->slowSpinup)
max_retries = 15;
request->iotd_Req.io_Command = CMD_READ;
request->iotd_Req.io_Offset = block * md->blocksize;
request->iotd_Req.io_Data = buf;
request->iotd_Req.io_Length = md->blocksize;
for (i = 0; i < max_retries; i++) {
LONG err = DoIO((struct IORequest*)request);
if (!err) {
break;
}
if (err != ERROR_NOT_READY) {
dbg("Read block %"PRIu32" error %"PRId32"\n", block, err);
/* Error retry handled in a4091.device, fail quickly here. */
i = max_retries;
break;
}
/* Give the drive more time to spin up */
dbg("Drive not ready.\n");
delay(1000000);
}
if (i == max_retries) {
return FALSE;
}
ULONG v = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | (buf[3] << 0);
dbg_lseg("Read block %"PRIu32" %08"PRIx32"\n", block, v);
if (id != 0xffffffff) {
if (v != id) {
return FALSE;
}
if (!checksum(buf, md)) {
return FALSE;
}
}
return TRUE;
}
// Read multiple longs from LSEG blocks
static BOOL lseg_read_longs(struct MountData *md, ULONG longs, ULONG *data)
{
dbg_lseg("lseg_read_longs, longs %"PRId32" ptr %p, remaining %"PRId32"\n", longs, data, md->lseglongs);
ULONG cnt = 0;
md->lseghasword = FALSE;
while (longs > cnt) {
if (md->lseglongs > 0) {
data[cnt] = md->lsegbuf->lsb_LoadData[md->lsegoffset];
md->lsegoffset++;
md->lseglongs--;
cnt++;
if (longs == cnt) {
return TRUE;
}
}
if (!md->lseglongs) {
if (md->lsegblock == 0xffffffff) {
dbg("lseg_read_long premature end!\n");
return FALSE;
}
if (!readblock((UBYTE*)md->lsegbuf, md->lsegblock, IDNAME_LOADSEG, md)) {
return FALSE;
}
md->lseglongs = LSEG_DATASIZE;
md->lsegoffset = 0;
dbg_lseg("lseg_read_long lseg block %"PRId32" loaded, next %"PRId32"\n", md->lsegblock, md->lsegbuf->lsb_Next);
md->lsegblock = md->lsegbuf->lsb_Next;
}
}
return TRUE;
}
// Read single long from LSEG blocks
static BOOL lseg_read_long(struct MountData *md, ULONG *data)
{
BOOL v;
if (md->lseghasword) {
ULONG temp;
v = lseg_read_longs(md, 1, &temp);
*data = (md->lsegwordbuf << 16) | (temp >> 16);
md->lsegwordbuf = (UWORD)temp;
md->lseghasword = TRUE;
} else {
v = lseg_read_longs(md, 1, data);
}
dbg_lseg("lseg_read_long %08"PRIx32"\n", *data);
return v;
}
// Read single word from LSEG blocks
// Internally reads long and buffers second word.
static BOOL lseg_read_word(struct MountData *md, ULONG *data)
{
if (md->lseghasword) {
*data = md->lsegwordbuf;
md->lseghasword = FALSE;
dbg("lseg_read_word 2/2 %08"PRIx32"\n", *data);
return TRUE;
}
ULONG temp;
BOOL v = lseg_read_longs(md, 1, &temp);
if (v) {
md->lseghasword = TRUE;
md->lsegwordbuf = (UWORD)temp;
*data = temp >> 16;
}
dbg("lseg_read_word 1/2 %08"PRIx32"\n", *data);
return v;
}
struct RelocHunk
{
ULONG hunkSize;
ULONG *hunkData;
};
// Filesystem relocator
static APTR fsrelocate(struct MountData *md)
{
struct ExecBase *SysBase = md->SysBase;
ULONG data;
struct RelocHunk *relocHunks;
LONG firstHunk, lastHunk;
LONG totalHunks;
WORD hunkCnt;
WORD ret = 0;
APTR firstProcessedHunk = NULL;
if (!lseg_read_long(md, &data)) {
return NULL;
}
if (data != HUNK_HEADER) {
return NULL;
}
// Read the size of a resident library name. This should
// never be != 0.
if (!lseg_read_long(md, &data) || data != 0) {
return NULL;
}
// Read the size of the hunk table, which should be > 0.
// Note that this number may be larger than the
// difference between the last and the first hunk + 1 for
// overlay binary files. But then this function does not
// support overlay binary files.
if (!lseg_read_long(md, &data) || data <= 0) {
return NULL;
}
// first hunk
if (!lseg_read_long(md, &firstHunk)) {
return NULL;
}
// last hunk
if (!lseg_read_long(md, &lastHunk)) {
return NULL;
}
if (firstHunk < 0 || lastHunk < 0 || firstHunk > lastHunk) {
return NULL;
}
totalHunks = lastHunk - firstHunk + 1;
dbg("first hunk %"PRId32", last hunk %"PRId32"\n", firstHunk, lastHunk);
relocHunks = AllocMem(totalHunks * sizeof(struct RelocHunk), MEMF_CLEAR);
if (!relocHunks) {
return NULL;
}
// Pre-allocate hunks
ULONG *prevChunk = NULL;
hunkCnt = 0;
while (hunkCnt < totalHunks) {
struct RelocHunk *rh = &relocHunks[hunkCnt];
ULONG hunkHeadSize;
ULONG memoryFlags = MEMF_PUBLIC;
if (!lseg_read_long(md, &hunkHeadSize)) {
goto end;
}
if ((hunkHeadSize & (HUNKF_CHIP | HUNKF_FAST)) == (HUNKF_CHIP | HUNKF_FAST)) {
if (!lseg_read_long(md, &memoryFlags)) {
goto end;
}
} else if (hunkHeadSize & HUNKF_CHIP) {
memoryFlags |= MEMF_CHIP;
}
hunkHeadSize &= ~(HUNKF_CHIP | HUNKF_FAST);
rh->hunkSize = hunkHeadSize;
rh->hunkData = AllocMem((hunkHeadSize + 2) * sizeof(ULONG), memoryFlags | MEMF_CLEAR);
if (!rh->hunkData) {
goto end;
}
dbg("hunk %"PRId32": ptr %p, size %"PRId32", memory flags %08"PRIx32"\n", hunkCnt + firstHunk, rh->hunkData, hunkHeadSize, memoryFlags);
rh->hunkData[0] = rh->hunkSize + 2;
rh->hunkData[1] = MKBADDR(prevChunk);
prevChunk = &rh->hunkData[1];
rh->hunkData += 2;
if (!firstProcessedHunk) {
firstProcessedHunk = (APTR)(rh->hunkData - 1);
}
hunkCnt++;
}
dbg("hunks allocated\n");
// Load hunks/relocate
hunkCnt = 0;
struct RelocHunk *rh = NULL;
while (hunkCnt <= totalHunks) {
ULONG hunkType;
if (!lseg_read_long(md, &hunkType)) {
if (hunkCnt >= totalHunks) {
break; // normal end
}
goto end;
}
dbg("HUNK %08"PRIx32"\n", hunkType);
switch(hunkType)
{
case HUNK_CODE:
case HUNK_DATA:
case HUNK_BSS:
{
ULONG hunkSize;
if (hunkCnt >= totalHunks) {
goto end; // overflow
}
rh = &relocHunks[hunkCnt++];
if (!lseg_read_long(md, &hunkSize)) {
goto end;
}
if (hunkSize > rh->hunkSize) {
goto end;
}
if (hunkType != HUNK_BSS) {
if (!lseg_read_longs(md, hunkSize, rh->hunkData)) {
goto end;
}
}
}
break;
case HUNK_RELOC32:
case HUNK_RELOC32SHORT:
{
ULONG relocCnt, relocHunk;
if (rh == NULL) {
goto end;
}
for (;;) {
if (!lseg_read_long(md, &relocCnt)) {
goto end;
}
if (!relocCnt) {
break;
}
if (!lseg_read_long(md, &relocHunk)) {
goto end;
}
relocHunk -= firstHunk;
if (relocHunk >= totalHunks) {
goto end;
}
dbg("HUNK_RELOC32: relocs %"PRId32" hunk %"PRId32"\n", relocCnt, relocHunk + firstHunk);
struct RelocHunk *rhr = &relocHunks[relocHunk];
while (relocCnt != 0) {
ULONG relocOffset;
if (hunkType == HUNK_RELOC32SHORT) {
if (!lseg_read_word(md, &relocOffset)) {
goto end;
}
} else {
if (!lseg_read_long(md, &relocOffset)) {
goto end;
}
}
if (relocOffset > (rh->hunkSize - 1) * sizeof(ULONG)) {
goto end;
}
UBYTE *hData = (UBYTE*)rh->hunkData + relocOffset;
if (relocOffset & 1) {
// Odd address, 68000/010 support.
ULONG v = (hData[0] << 24) | (hData[1] << 16) | (hData[2] << 8) | (hData[3] << 0);
v += (ULONG)rhr->hunkData;
hData[0] = v >> 24;
hData[1] = v >> 16;
hData[2] = v >> 8;
hData[3] = v >> 0;
} else {
*((ULONG*)hData) += (ULONG)rhr->hunkData;
}
relocCnt--;
}
}
}
break;
case HUNK_END:
// do nothing
if (hunkCnt >= totalHunks) {
ret = 1; // normal end
goto end;
}
break;
default:
dbg("Unexpected HUNK!\n");
goto end;
}
}
ret = 1;
end:
if (!ret) {
dbg("reloc failed\n");
hunkCnt = 0;
while (hunkCnt < totalHunks) {
struct RelocHunk *rh = &relocHunks[hunkCnt];
if (rh->hunkData) {
FreeMem(rh->hunkData - 2, (rh->hunkSize + 2) * sizeof(ULONG));
}
hunkCnt++;
}
firstProcessedHunk = NULL;
} else {
cacheclear(md);
dbg("reloc ok, first hunk %p\n", firstProcessedHunk);
}
FreeMem(relocHunks, totalHunks * sizeof(struct RelocHunk));
return firstProcessedHunk;
}
// Scan FileSystem.resource, create new if it is not found or existing entry has older version number.
static struct FileSysEntry *FSHDProcess(struct FileSysHeaderBlock *fshb, ULONG dostype, ULONG version, BOOL newOnly, struct MountData *md)
{
struct ExecBase *SysBase = md->SysBase;
struct FileSysEntry *fse = NULL;
const UBYTE *creator = md->creator ? md->creator : md->zero;
const char resourceName[] = "FileSystem.resource";
Forbid();
struct FileSysResource *fsr = OpenResource(FSRNAME);
if (!fsr) {
// FileSystem.resource didn't exist (KS 1.3), create it.
fsr = AllocMem(sizeof(struct FileSysResource) + strlen(resourceName) + 1 + strlen(creator) + 1, MEMF_PUBLIC | MEMF_CLEAR);
if (fsr) {
char *FsResName = (UBYTE *)(fsr + 1);
char *CreatorStr = (UBYTE *)FsResName + (strlen(resourceName) + 1);
NewList(&fsr->fsr_FileSysEntries);
fsr->fsr_Node.ln_Type = NT_RESOURCE;
strcpy(FsResName, resourceName);
fsr->fsr_Node.ln_Name = FsResName;
strcpy(CreatorStr, creator);
fsr->fsr_Creator = CreatorStr;
AddTail(&SysBase->ResourceList, &fsr->fsr_Node);
}
dbg("FileSystem.resource created %p\n", fsr);
}
if (fsr) {
fse = (struct FileSysEntry*)fsr->fsr_FileSysEntries.lh_Head;
while (fse->fse_Node.ln_Succ) {
if (fse->fse_DosType == dostype) {
if (fse->fse_Version >= version) {
// FileSystem.resource filesystem is same or newer, don't update
if (newOnly) {
dbg("FileSystem.resource scan: %p dostype %08"PRIx32" found, FSRES version %08"PRIx32" >= FSHD version %08"PRIx32"\n", fse, dostype, fse->fse_Version, version);
fse = NULL;
}
goto end;
}
}
fse = (struct FileSysEntry*)fse->fse_Node.ln_Succ;
}
if (fshb && newOnly) {
fse = AllocMem(sizeof(struct FileSysEntry) + strlen(creator) + 1, MEMF_PUBLIC | MEMF_CLEAR);
if (fse) {
// Process patchflags
ULONG patchFlags = fshb->fhb_PatchFlags;
if (patchFlags & 0x0001)
fse->fse_Type = fshb->fhb_Type;
if (patchFlags & 0x0002)
fse->fse_Task = fshb->fhb_Task;
if (patchFlags & 0x0004)
fse->fse_Lock = fshb->fhb_Lock;
if (patchFlags & 0x0008)
fse->fse_Handler = fshb->fhb_Handler;
if (patchFlags & 0x0010)
fse->fse_StackSize = fshb->fhb_StackSize;
if (patchFlags & 0x0020)
fse->fse_Priority = fshb->fhb_Priority;
if (patchFlags & 0x0040)
fse->fse_Startup = fshb->fhb_Startup;
if (patchFlags & 0x0080)
fse->fse_SegList = fshb->fhb_SegListBlocks;
if (patchFlags & 0x0100)
fse->fse_GlobalVec = fshb->fhb_GlobalVec;
fse->fse_DosType = fshb->fhb_DosType;
fse->fse_Version = fshb->fhb_Version;
fse->fse_PatchFlags = fshb->fhb_PatchFlags;
strcpy((UBYTE*)(fse + 1), creator);
fse->fse_Node.ln_Name = (UBYTE*)(fse + 1);
}
dbg("FileSystem.resource scan: dostype %08"PRIx32" not found or old version: created new\n", dostype);
}
}
end:
Permit();
return fse;
}
// Add new FileSysEntry to FileSystem.resource or free it if filesystem load failed.
static void FSHDAdd(struct FileSysEntry *fse, struct MountData *md)
{
struct ExecBase *SysBase = md->SysBase;
if (fse->fse_SegList) {
Forbid();
struct FileSysResource *fsr = OpenResource(FSRNAME);
if (fsr) {
AddHead(&fsr->fsr_FileSysEntries, &fse->fse_Node);
dbg("FileSysEntry %p added to FileSystem.resource, dostype %08"PRIx32"\n", fse, fse->fse_DosType);
fse = NULL;
}
Permit();
}
if (fse) {
dbg("FileSysEntry %p freed, dostype %08"PRIx32"\n", fse, fse->fse_DosType);
FreeMem(fse, sizeof(struct FileSysEntry));
}
}
// Parse FileSystem Header Blocks, load and relocate filesystem if needed.
static struct FileSysEntry *ParseFSHD(UBYTE *buf, ULONG block, ULONG dostype, struct MountData *md)
{
struct FileSysHeaderBlock *fshb = (struct FileSysHeaderBlock*)buf;
struct FileSysEntry *fse = NULL;
for (;;) {
if (block == 0xffffffff) {
break;
}
if (!readblock(buf, block, IDNAME_FILESYSHEADER, md)) {
break;
}
dbg("FSHD found, block %"PRIu32", dostype %08"PRIx32", looking for dostype %08"PRIx32"\n", block, fshb->fhb_DosType, dostype);
if (fshb->fhb_DosType == dostype) {
dbg("FSHD dostype match found\n");
fse = FSHDProcess(fshb, dostype, fshb->fhb_Version, TRUE, md);
if (fse) {
md->lsegblock = fshb->fhb_SegListBlocks;
md->lsegbuf = (struct LoadSegBlock*)(buf + md->blocksize);
md->lseglongs = 0;
APTR seg = fsrelocate(md);
fse->fse_SegList = MKBADDR(seg);
// Add to FileSystem.resource if succeeded, delete entry if failure.
FSHDAdd(fse, md);
}
break;
}
block = fshb->fhb_Next;
}
if (!fse) {
fse = FSHDProcess(NULL, dostype, 0, FALSE, md);
}
return fse;
}
#if NO_CONFIGDEV
// Create fake ConfigDev and DiagArea to support autoboot without requiring real autoconfig device.
static void CreateFakeConfigDev(struct MountData *md)
{
struct ExecBase *SysBase = md->SysBase;
struct ExpansionBase *ExpansionBase = md->ExpansionBase;
struct ConfigDev *configDev;
configDev = AllocConfigDev();
if (configDev) {
configDev->cd_BoardAddr = (void*)&entrypoint;
configDev->cd_BoardSize = (UBYTE*)&entrypoint_end - (UBYTE*)&entrypoint;
configDev->cd_Rom.er_Type = ERTF_DIAGVALID;
ULONG bbSize = &bootblock_end - &bootblock;
ULONG daSize = sizeof(struct DiagArea) + bbSize;
struct DiagArea *diagArea = AllocMem(daSize, MEMF_CLEAR | MEMF_PUBLIC);
if (diagArea) {
diagArea->da_Config = DAC_CONFIGTIME;
diagArea->da_BootPoint = sizeof(struct DiagArea);
diagArea->da_Size = (UWORD)daSize;
copymem(diagArea + 1, &bootblock, bbSize);
*((ULONG*)&configDev->cd_Rom.er_Reserved0c) = (ULONG)diagArea;
cacheclear(md);
}
md->configDev = configDev;
}
}
#endif
struct ParameterPacket
{
const UBYTE *dosname;
const UBYTE *execname;
ULONG unitnum;
ULONG flags;
struct DosEnvec de;
};
static UBYTE ToUpper(UBYTE c)
{
if (c >= 'a' && c <= 'z') {
return c - ('a'-'A');
}
return c;
}
// Case-insensitive BSTR string comparison
static BOOL CompareBSTRNoCase(const UBYTE *src1, const UBYTE *src2)
{
UBYTE len1 = *src1++;
UBYTE len2 = *src2++;
if (len1 != len2) {
return FALSE;
}
for (UWORD i = 0; i < len1; i++) {
UBYTE c1 = *src1++;
UBYTE c2 = *src2++;
c1 = ToUpper(c1);
c2 = ToUpper(c2);
if (c1 != c2) {
return FALSE;
}
}
return TRUE;
}
// Check for duplicate device names
static bool CheckDevName(struct MountData *md, UBYTE *bname)
{
struct ExecBase *SysBase = md->SysBase;
bool found = false;
Forbid();
struct BootNode *bn;
for (bn = (struct BootNode*)md->ExpansionBase->MountList.lh_Head;
bn->bn_Node.ln_Succ != NULL;
bn = (struct BootNode*)bn->bn_Node.ln_Succ)
{
struct DeviceNode *dn = bn->bn_DeviceNode;
const UBYTE *bname2 = BADDR(dn->dn_Name);
if (CompareBSTRNoCase(bname, bname2)) {
found = true;
}
}
Permit();
return found;
}
// Check for duplicate device names
static void CheckAndFixDevName(struct MountData *md, UBYTE *bname)
{
struct ExecBase *SysBase = md->SysBase;
Forbid();
struct BootNode *bn = (struct BootNode*)md->ExpansionBase->MountList.lh_Head;
while (bn->bn_Node.ln_Succ) {
struct DeviceNode *dn = bn->bn_DeviceNode;
const UBYTE *bname2 = BADDR(dn->dn_Name);
if (CompareBSTRNoCase(bname, bname2)) {
UBYTE len = bname[0] > 30 ? 30 : bname[0];
UBYTE *name = bname + 1;
dbg("Duplicate device name '%s'\n", name);
if (len > 2 && name[len - 2] == '.' && name[len - 1] >= '0' && name[len - 1] < '9') {
// if already ends to .<digit>: increase digit by one
name[len - 1]++;
} else {
// else append .1
name[len++] = '.';
name[len++] = '1';
name[len] = 0;
bname[0] += 2;
}
dbg("-> new device name '%s'\n", name);
// retry
bn = (struct BootNode*)md->ExpansionBase->MountList.lh_Head;
continue;
}
bn = (struct BootNode*)bn->bn_Node.ln_Succ;
}
Permit();
}
// Add DeviceNode to Expansion MountList.
static void AddNode(struct PartitionBlock *part, struct ParameterPacket *pp, struct DeviceNode *dn, UBYTE *name, struct MountData *md)
{
struct ExecBase *SysBase = md->SysBase;
struct ExpansionBase *ExpansionBase = md->ExpansionBase;
struct DosLibrary *DOSBase = md->DOSBase;
LONG bootPri = (part->pb_Flags & PBFF_BOOTABLE) ? pp->de.de_BootPri : -128;
if (ExpansionBase->LibNode.lib_Version >= 37) {
// KS 2.0+
if (!md->DOSBase && bootPri > -128) {
dbg("KS20+ Mounting as bootable: pri %08"PRIx32"\n", bootPri);
AddBootNode(bootPri, ADNF_STARTPROC, dn, md->configDev);
} else {
dbg("KS20+: Mounting as non-bootable\n");
AddDosNode(bootPri, ADNF_STARTPROC, dn);
}
} else {
// KS 1.3
if (!md->DOSBase && bootPri > -128) {
dbg("KS13 Mounting as bootable: pri %08"PRIx32"\n", bootPri);
// Create and insert bootnode manually.
struct BootNode *bn = AllocMem(sizeof(struct BootNode), MEMF_CLEAR | MEMF_PUBLIC);
if (bn) {
bn->bn_Node.ln_Type = NT_BOOTNODE;
bn->bn_Node.ln_Pri = (BYTE)bootPri;
bn->bn_Node.ln_Name = (UBYTE*)md->configDev;
bn->bn_DeviceNode = dn;
Forbid();
Enqueue(&md->ExpansionBase->MountList, &bn->bn_Node);
Permit();
}
} else {
dbg("KS13: Mounting as non-bootable\n");
AddDosNode(bootPri, 0, dn);
if (md->DOSBase) {
// KS 1.3 ADNF_STARTPROC is not supported
// need to use DeviceProc() to start the filesystem process.
UWORD len = strlen(name);
name[len++] = ':';
name[len] = 0;
void * __attribute__((unused)) mp = DeviceProc(name);
dbg("DeviceProc() returned %p\n", mp);
}
}
}
}
static void ProcessPatchFlags(struct DeviceNode *dn, struct FileSysEntry *fse)
{
// Process PatchFlags.
ULONG patchFlags = fse->fse_PatchFlags;
if (patchFlags & 0x0001)
dn->dn_Type = fse->fse_Type;
if (patchFlags & 0x0002)
dn->dn_Task = (struct MsgPort *)fse->fse_Task;
if (patchFlags & 0x0004)
dn->dn_Lock = fse->fse_Lock;
if (patchFlags & 0x0008)
dn->dn_Handler = fse->fse_Handler;
if (patchFlags & 0x0010)
dn->dn_StackSize = fse->fse_StackSize;
if (patchFlags & 0x0020)
dn->dn_Priority = fse->fse_Priority;
if (patchFlags & 0x0040)
dn->dn_Startup = fse->fse_Startup;
if (patchFlags & 0x0080)
dn->dn_SegList = fse->fse_SegList;
if (patchFlags & 0x0100)
dn->dn_GlobalVec = fse->fse_GlobalVec;
}
// Parse PART block, mount drive.
static ULONG ParsePART(UBYTE *buf, ULONG block, ULONG filesysblock, struct MountData *md)
{
struct ExecBase *SysBase = md->SysBase;
struct ExpansionBase *ExpansionBase = md->ExpansionBase;
struct PartitionBlock *part = (struct PartitionBlock*)buf;
ULONG nextpartblock = 0xffffffff;
if (!readblock(buf, block, IDNAME_PARTITION, md)) {
return nextpartblock;
}
dbg("PART found, block %"PRIu32"\n", block);
nextpartblock = part->pb_Next;
if (!(part->pb_Flags & PBFF_NOMOUNT)) {
struct ParameterPacket *pp = AllocMem(sizeof(struct ParameterPacket), MEMF_PUBLIC | MEMF_CLEAR);
if (pp) {
UBYTE len;
copymem(&pp->de, &part->pb_Environment, (part->pb_Environment[0] + 1) * sizeof(ULONG));
struct FileSysEntry *fse = ParseFSHD(buf + md->blocksize, filesysblock, pp->de.de_DosType, md);
pp->execname = md->devicename;
pp->unitnum = md->unitnum;
pp->dosname = part->pb_DriveName + 1;
len=(*part->pb_DriveName) > 30 ? 30 : (*part->pb_DriveName);
part->pb_DriveName[len + 1] = 0;
dbg("PART '%s'\n", pp->dosname);
CheckAndFixDevName(md, part->pb_DriveName);
struct DeviceNode *dn = MakeDosNode(pp);
if (dn) {
if (fse) {
ProcessPatchFlags(dn, fse);
}
dbg("Mounting partition\n");
#if NO_CONFIGDEV
if (!md->configDev && !md->DOSBase) {
CreateFakeConfigDev(md);
}
#endif
AddNode(part, pp, dn, part->pb_DriveName + 1, md);
md->ret++;
} else {
dbg("Device node creation failed\n");
}
FreeMem(pp, sizeof(struct ParameterPacket));
}
}
return nextpartblock;
}
// Scan PART blocks
static LONG ParseRDSK(UBYTE *buf, struct MountData *md)
{
struct RigidDiskBlock *rdb = (struct RigidDiskBlock*)buf;
ULONG partblock = rdb->rdb_PartitionList;
ULONG filesysblock = rdb->rdb_FileSysHeaderList;
ULONG flags = rdb->rdb_Flags;
for (;;) {
if (partblock == 0xffffffff) {
break;
}
partblock = ParsePART(buf, partblock, filesysblock, md);
}
md->wasLastDev = !asave->ignore_last && (flags & RDBFF_LAST) != 0;
md->wasLastLun = (flags & RDBFF_LASTLUN) != 0;
return md->ret;
}
// Search for RDB
static LONG ScanRDSK(struct MountData *md)
{
LONG ret = -1;
for (UWORD i = 0; i < RDB_LOCATION_LIMIT; i++) {
if (readblock(md->buf, i, 0xffffffff, md)) {
struct RigidDiskBlock *rdb = (struct RigidDiskBlock*)md->buf;
if (rdb->rdb_ID == IDNAME_RIGIDDISK) {
dbg("RDB found, block %"PRIu32"\n", i);
ret = ParseRDSK(md->buf, md);
break;
}
}
}
return ret;
}
static struct FileSysEntry *find_filesystem(ULONG id1, ULONG id2)
{
struct FileSysResource *FileSysResBase = NULL;
struct FileSysEntry *fse, *fs=NULL;
Forbid();
if ((FileSysResBase = (struct FileSysResource *)OpenResource(FSRNAME))) {
Forbid();
for (fse = (struct FileSysEntry *)FileSysResBase->fsr_FileSysEntries.lh_Head;
fse->fse_Node.ln_Succ;
fse = (struct FileSysEntry *)fse->fse_Node.ln_Succ) {
if ((id1 && fse->fse_DosType==id1) || (id2 && fse->fse_DosType==id2)) {
fs=fse;
break;
}
}
}
Permit();
return fs;
}
static void list_filesystems(void)
{
#ifdef DEBUG_MOUNTER
struct FileSysResource *FileSysResBase = NULL;
struct FileSysEntry *fse;
if (!(FileSysResBase = (struct FileSysResource *)OpenResource(FSRNAME))) {
printf("Cannot open %s\n", FSRNAME);
return;
}
printf("DosType Version Creator\n");
printf("---------------------------------------------------------------------------\n");
for (fse = (struct FileSysEntry *)FileSysResBase->fsr_FileSysEntries.lh_Head;
fse->fse_Node.ln_Succ;
fse = (struct FileSysEntry *)fse->fse_Node.ln_Succ) {
int x;
for (x=24; x>=8; x-=8)
putchar((fse->fse_DosType >> x) & 0xFF);
putchar((fse->fse_DosType & 0xFF) < 0x30
? (fse->fse_DosType & 0xFF) + 0x30
: (fse->fse_DosType & 0xFF));
printf(" %3d.%-3d", (fse->fse_Version >> 16), (fse->fse_Version & 0xFFFF));
if(fse->fse_Node.ln_Name[0]) {
char term;
int name_len = strlen(fse->fse_Node.ln_Name);
printf(" %.55s", fse->fse_Node.ln_Name);
if (name_len >= 55) {
printf("...");