/
os2.c
779 lines (614 loc) · 22 KB
1
2
3
/*
* OS/2 support routines for PhysicsFS.
*
4
* Please see the file LICENSE.txt in the source's root directory.
5
6
7
8
9
10
11
12
13
14
15
*
* This file written by Ryan C. Gordon.
*/
#if (defined OS2)
#define INCL_DOSSEMAPHORES
#define INCL_DOSDATETIME
#define INCL_DOSFILEMGR
#define INCL_DOSMODULEMGR
#define INCL_DOSERRORS
16
#define INCL_DOSPROCESS
17
#define INCL_DOSDEVICES
18
19
#define INCL_DOSDEVIOCTL
#define INCL_DOSMISC
20
21
#include <os2.h>
22
#include <stdio.h>
23
24
25
#include <stdlib.h>
#include <errno.h>
#include <string.h>
26
27
28
29
30
31
32
#include <time.h>
#include <ctype.h>
#define __PHYSICSFS_INTERNAL__
#include "physfs_internal.h"
const char *__PHYSFS_platformDirSeparator = "\\";
33
34
35
static const char *get_os2_error_string(APIRET rc)
36
{
37
switch (rc)
38
{
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
case NO_ERROR: return(NULL); /* not an error. */
case ERROR_INTERRUPT: return(NULL); /* not an error. */
case ERROR_TIMEOUT: return(NULL); /* not an error. */
case ERROR_NOT_ENOUGH_MEMORY: return(ERR_OUT_OF_MEMORY);
case ERROR_FILE_NOT_FOUND: return(ERR_NO_SUCH_FILE);
case ERROR_PATH_NOT_FOUND: return(ERR_NO_SUCH_PATH);
case ERROR_ACCESS_DENIED: return(ERR_ACCESS_DENIED);
case ERROR_NOT_DOS_DISK: return(ERR_NOT_A_DOS_DISK);
case ERROR_SHARING_VIOLATION: return(ERR_SHARING_VIOLATION);
case ERROR_CANNOT_MAKE: return(ERR_CANNOT_MAKE);
case ERROR_DEVICE_IN_USE: return(ERR_DEV_IN_USE);
case ERROR_OPEN_FAILED: return(ERR_OPEN_FAILED);
case ERROR_DISK_FULL: return(ERR_DISK_FULL);
case ERROR_PIPE_BUSY: return(ERR_PIPE_BUSY);
case ERROR_SHARING_BUFFER_EXCEEDED: return(ERR_SHARING_BUF_EXCEEDED);
case ERROR_FILENAME_EXCED_RANGE: return(ERR_BAD_FILENAME);
case ERROR_META_EXPANSION_TOO_LONG: return(ERR_BAD_FILENAME);
case ERROR_TOO_MANY_HANDLES: return(ERR_TOO_MANY_HANDLES);
case ERROR_TOO_MANY_OPEN_FILES: return(ERR_TOO_MANY_HANDLES);
case ERROR_NO_MORE_SEARCH_HANDLES: return(ERR_TOO_MANY_HANDLES);
case ERROR_SEEK_ON_DEVICE: return(ERR_SEEK_ERROR);
case ERROR_NEGATIVE_SEEK: return(ERR_SEEK_OUT_OF_RANGE);
61
/*!!! FIXME: Where did this go? case ERROR_DEL_CURRENT_DIRECTORY: return(ERR_DEL_CWD);*/
62
63
64
case ERROR_WRITE_PROTECT: return(ERR_WRITE_PROTECT_ERROR);
case ERROR_WRITE_FAULT: return(ERR_WRITE_FAULT);
case ERROR_LOCK_VIOLATION: return(ERR_LOCK_VIOLATION);
65
case ERROR_GEN_FAILURE: return(ERR_GEN_FAILURE);
66
67
68
case ERROR_UNCERTAIN_MEDIA: return(ERR_UNCERTAIN_MEDIA);
case ERROR_PROTECTION_VIOLATION: return(ERR_PROT_VIOLATION);
case ERROR_BROKEN_PIPE: return(ERR_BROKEN_PIPE);
69
70
71
72
73
74
75
76
77
78
79
80
81
case ERROR_INVALID_PARAMETER:
case ERROR_INVALID_NAME:
case ERROR_INVALID_DRIVE:
case ERROR_INVALID_HANDLE:
case ERROR_INVALID_FUNCTION:
case ERROR_INVALID_LEVEL:
case ERROR_INVALID_CATEGORY:
case ERROR_DUPLICATE_NAME:
case ERROR_BUFFER_OVERFLOW:
case ERROR_BAD_LENGTH:
case ERROR_BAD_DRIVER_LEVEL:
case ERROR_DIRECT_ACCESS_HANDLE:
82
83
case ERROR_NOT_OWNER:
return(ERR_PHYSFS_BAD_OS_CALL);
85
86
default: return(ERR_OS2_GENERIC);
} /* switch */
88
89
return(NULL);
} /* get_os2_error_string */
90
91
92
93
94
95
96
97
static APIRET os2err(APIRET retval)
{
char buf[128];
const char *err = get_os2_error_string(retval);
if (err == ERR_OS2_GENERIC)
{
98
snprintf(buf, sizeof (buf), ERR_OS2_GENERIC, (int) retval);
99
100
err = buf;
} /* if */
101
102
103
104
if (err != NULL)
__PHYSFS_setError(err);
105
return(retval);
106
107
108
} /* os2err */
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
/* (be gentle, this function isn't very robust.) */
static void cvt_path_to_correct_case(char *buf)
{
char *fname = buf + 3; /* point to first element. */
char *ptr = strchr(fname, '\\'); /* find end of first element. */
buf[0] = toupper(buf[0]); /* capitalize drive letter. */
/*
* Go through each path element, and enumerate its parent dir until
* a case-insensitive match is found. If one is (and it SHOULD be)
* then overwrite the original element with the correct case.
* If there's an error, or the path has vanished for some reason, it
* won't hurt to have the original case, so we just keep going.
*/
while (fname != NULL)
{
char spec[CCHMAXPATH];
FILEFINDBUF3 fb;
HDIR hdir = HDIR_CREATE;
ULONG count = 1;
APIRET rc;
*(fname - 1) = '\0'; /* isolate parent dir string. */
strcpy(spec, buf); /* copy isolated parent dir... */
strcat(spec, "\\*.*"); /* ...and add wildcard search spec. */
if (ptr != NULL) /* isolate element to find (fname is the start). */
*ptr = '\0';
rc = DosFindFirst(spec, &hdir, FILE_DIRECTORY,
&fb, sizeof (fb), &count, FIL_STANDARD);
if (rc == NO_ERROR)
{
while (count == 1) /* while still entries to enumerate... */
{
if (__PHYSFS_platformStricmp(fb.achName, fname) == 0)
{
strcpy(fname, fb.achName);
break; /* there it is. Overwrite and stop searching. */
} /* if */
DosFindNext(hdir, &fb, sizeof (fb), &count);
} /* while */
DosFindClose(hdir);
} /* if */
*(fname - 1) = '\\'; /* unisolate parent dir. */
fname = ptr; /* point to next element. */
if (ptr != NULL)
{
*ptr = '\\'; /* unisolate element. */
ptr = strchr(++fname, '\\'); /* find next element. */
} /* if */
} /* while */
} /* cvt_file_to_correct_case */
168
169
170
171
172
173
static char *baseDir = NULL;
int __PHYSFS_platformInit(void)
{
char buf[CCHMAXPATH];
APIRET rc;
174
175
PTIB ptib;
PPIB ppib;
176
PHYSFS_sint32 len;
177
178
assert(baseDir == NULL);
179
180
BAIL_IF_MACRO(os2err(DosGetInfoBlocks(&ptib, &ppib)) != NO_ERROR, NULL, 0);
rc = DosQueryModuleName(ppib->pib_hmte, sizeof (buf), (PCHAR) buf);
181
182
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, 0);
183
184
185
186
187
/* chop off filename, leave path. */
for (len = strlen(buf) - 1; len >= 0; len--)
{
if (buf[len] == '\\')
{
188
buf[len] = '\0';
189
190
191
192
break;
} /* if */
} /* for */
193
assert(len > 0); /* should have been a "x:\\" on the front on string. */
195
196
197
/* The string is capitalized! Figure out the REAL case... */
cvt_path_to_correct_case(buf);
198
baseDir = (char *) allocator.Malloc(len + 1);
199
BAIL_IF_MACRO(baseDir == NULL, ERR_OUT_OF_MEMORY, 0);
200
strcpy(baseDir, buf);
201
202
203
204
205
206
207
return(1); /* success. */
} /* __PHYSFS_platformInit */
int __PHYSFS_platformDeinit(void)
{
assert(baseDir != NULL);
208
allocator.Free(baseDir);
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
baseDir = NULL;
return(1); /* success. */
} /* __PHYSFS_platformDeinit */
static int disc_is_inserted(ULONG drive)
{
int rc;
char buf[20];
DosError(FERR_DISABLEHARDERR | FERR_DISABLEEXCEPTION);
rc = DosQueryFSInfo(drive + 1, FSIL_VOLSER, buf, sizeof (buf));
DosError(FERR_ENABLEHARDERR | FERR_ENABLEEXCEPTION);
return(rc == NO_ERROR);
} /* is_cdrom_inserted */
225
226
227
/* looks like "CD01" in ASCII (littleendian)...used for an ioctl. */
#define CD01 0x31304443
228
229
static int is_cdrom_drive(ULONG drive)
{
230
PHYSFS_uint32 param, data;
231
232
ULONG ul1, ul2;
APIRET rc;
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
HFILE hfile = NULLHANDLE;
char drivename[3] = { 'A' + drive, ':', '\0' };
rc = DosOpen(drivename, &hfile, &ul1, 0, 0,
OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW,
OPEN_FLAGS_DASD | OPEN_FLAGS_FAIL_ON_ERROR |
OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYNONE, NULL);
BAIL_IF_MACRO(rc != NO_ERROR, NULL, 0);
data = 0;
param = PHYSFS_swapULE32(CD01);
ul1 = ul2 = sizeof (PHYSFS_uint32);
rc = DosDevIOCtl(hfile, IOCTL_CDROMDISK, CDROMDISK_GETDRIVER,
¶m, sizeof (param), &ul1, &data, sizeof (data), &ul2);
DosClose(hfile);
return((rc == NO_ERROR) && (PHYSFS_swapULE32(data) == CD01));
250
251
252
} /* is_cdrom_drive */
253
void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
254
{
255
256
ULONG dummy = 0;
ULONG drivemap = 0;
257
ULONG i, bit;
258
APIRET rc = DosQueryCurrentDisk(&dummy, &drivemap);
259
260
if (os2err(rc) != NO_ERROR)
return;
261
262
for (i = 0, bit = 1; i < 26; i++, bit <<= 1)
263
264
265
266
267
{
if (drivemap & bit) /* this logical drive exists. */
{
if ((is_cdrom_drive(i)) && (disc_is_inserted(i)))
{
268
269
270
char drive[4] = "x:\\";
drive[0] = ('A' + i);
cb(data, drive);
271
272
273
274
275
276
277
278
} /* if */
} /* if */
} /* for */
} /* __PHYSFS_platformDetectAvailableCDs */
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
279
char *retval = (char *) allocator.Malloc(strlen(baseDir) + 1);
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
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
strcpy(retval, baseDir); /* calculated at init time. */
return(retval);
} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
return(NULL); /* (*shrug*) */
} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
return(__PHYSFS_platformCalcBaseDir(NULL));
} /* __PHYSFS_platformGetUserDir */
int __PHYSFS_platformStricmp(const char *x, const char *y)
{
int ux, uy;
do
{
ux = toupper((int) *x);
uy = toupper((int) *y);
if (ux > uy)
return(1);
else if (ux < uy)
return(-1);
x++;
y++;
} while ((ux) && (uy));
return(0);
} /* __PHYSFS_platformStricmp */
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
int __PHYSFS_platformStrnicmp(const char *x, const char *y, PHYSFS_uint32 len)
{
int ux, uy;
if (!len)
return(0);
do
{
ux = toupper((int) *x);
uy = toupper((int) *y);
if (ux > uy)
return(1);
else if (ux < uy)
return(-1);
x++;
y++;
len--;
} while ((ux) && (uy) && (len));
return(0);
} /* __PHYSFS_platformStrnicmp */
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
int __PHYSFS_platformExists(const char *fname)
{
FILESTATUS3 fs;
APIRET rc = DosQueryPathInfo(fname, FIL_STANDARD, &fs, sizeof (fs));
return(os2err(rc) == NO_ERROR);
} /* __PHYSFS_platformExists */
int __PHYSFS_platformIsSymLink(const char *fname)
{
return(0); /* no symlinks in OS/2. */
} /* __PHYSFS_platformIsSymlink */
int __PHYSFS_platformIsDirectory(const char *fname)
{
FILESTATUS3 fs;
APIRET rc = DosQueryPathInfo(fname, FIL_STANDARD, &fs, sizeof (fs));
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, 0)
return((fs.attrFile & FILE_DIRECTORY) != 0);
} /* __PHYSFS_platformIsDirectory */
365
/* !!! FIXME: can we lose the malloc here? */
366
367
368
369
370
371
372
char *__PHYSFS_platformCvtToDependent(const char *prepend,
const char *dirName,
const char *append)
{
int len = ((prepend) ? strlen(prepend) : 0) +
((append) ? strlen(append) : 0) +
strlen(dirName) + 1;
373
char *retval = allocator.Malloc(len);
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
char *p;
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
if (prepend)
strcpy(retval, prepend);
else
retval[0] = '\0';
strcat(retval, dirName);
if (append)
strcat(retval, append);
for (p = strchr(retval, '/'); p != NULL; p = strchr(p + 1, '/'))
*p = '\\';
return(retval);
} /* __PHYSFS_platformCvtToDependent */
395
396
void __PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks,
397
398
PHYSFS_EnumFilesCallback callback,
const char *origdir,
399
void *callbackdata)
400
401
{
char spec[CCHMAXPATH];
402
FILEFINDBUF3 fb;
403
404
405
406
HDIR hdir = HDIR_CREATE;
ULONG count = 1;
APIRET rc;
407
408
409
410
411
412
if (strlen(dirname) > sizeof (spec) - 5)
{
__PHYSFS_setError(ERR_BAD_FILENAME);
return;
} /* if */
413
strcpy(spec, dirname);
414
strcat(spec, (spec[strlen(spec) - 1] != '\\') ? "\\*.*" : "*.*");
415
416
417
418
rc = DosFindFirst(spec, &hdir,
FILE_DIRECTORY | FILE_ARCHIVED |
FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM,
419
&fb, sizeof (fb), &count, FIL_STANDARD);
420
421
422
423
if (os2err(rc) != NO_ERROR)
return;
424
425
while (count == 1)
{
426
if ((strcmp(fb.achName, ".") != 0) && (strcmp(fb.achName, "..") != 0))
427
callback(callbackdata, origdir, fb.achName);
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
DosFindNext(hdir, &fb, sizeof (fb), &count);
} /* while */
DosFindClose(hdir);
} /* __PHYSFS_platformEnumerateFiles */
char *__PHYSFS_platformCurrentDir(void)
{
char *retval;
ULONG currentDisk;
ULONG dummy;
ULONG pathSize = 0;
APIRET rc;
BYTE byte;
rc = DosQueryCurrentDisk(¤tDisk, &dummy);
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, NULL);
/* The first call just tells us how much space we need for the string. */
rc = DosQueryCurrentDir(currentDisk, &byte, &pathSize);
pathSize++; /* Add space for null terminator. */
451
retval = (char *) allocator.Malloc(pathSize + 3); /* plus "x:\\" */
452
453
454
455
456
457
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
/* Actually get the string this time. */
rc = DosQueryCurrentDir(currentDisk, (PBYTE) (retval + 3), &pathSize);
if (os2err(rc) != NO_ERROR)
{
458
allocator.Free(retval);
459
460
461
462
463
464
465
466
467
468
469
470
471
472
return(NULL);
} /* if */
retval[0] = ('A' + (currentDisk - 1));
retval[1] = ':';
retval[2] = '\\';
return(retval);
} /* __PHYSFS_platformCurrentDir */
char *__PHYSFS_platformRealPath(const char *path)
{
char buf[CCHMAXPATH];
char *retval;
473
APIRET rc = DosQueryPathInfo(path, FIL_QUERYFULLNAME, buf, sizeof (buf));
474
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, NULL);
475
retval = (char *) allocator.Malloc(strlen(buf) + 1);
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
strcpy(retval, buf);
return(retval);
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *path)
{
return(os2err(DosCreateDir(path, NULL)) == NO_ERROR);
} /* __PHYSFS_platformMkDir */
void *__PHYSFS_platformOpenRead(const char *filename)
{
ULONG actionTaken = 0;
HFILE hfile = NULLHANDLE;
/*
* File must be opened SHARE_DENYWRITE and ACCESS_READONLY, otherwise
* DosQueryFileInfo() will fail if we try to get a file length, etc.
*/
os2err(DosOpen(filename, &hfile, &actionTaken, 0, FILE_NORMAL,
OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW,
OPEN_FLAGS_FAIL_ON_ERROR | OPEN_FLAGS_NO_LOCALITY |
500
OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
OPEN_ACCESS_READONLY, NULL));
return((void *) hfile);
} /* __PHYSFS_platformOpenRead */
void *__PHYSFS_platformOpenWrite(const char *filename)
{
ULONG actionTaken = 0;
HFILE hfile = NULLHANDLE;
/*
* File must be opened SHARE_DENYWRITE and ACCESS_READWRITE, otherwise
* DosQueryFileInfo() will fail if we try to get a file length, etc.
*/
os2err(DosOpen(filename, &hfile, &actionTaken, 0, FILE_NORMAL,
OPEN_ACTION_REPLACE_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW,
OPEN_FLAGS_FAIL_ON_ERROR | OPEN_FLAGS_NO_LOCALITY |
519
OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |
520
521
522
523
524
525
526
527
528
529
OPEN_ACCESS_READWRITE, NULL));
return((void *) hfile);
} /* __PHYSFS_platformOpenWrite */
void *__PHYSFS_platformOpenAppend(const char *filename)
{
ULONG dummy = 0;
HFILE hfile = NULLHANDLE;
530
APIRET rc;
531
532
533
534
535
536
537
538
/*
* File must be opened SHARE_DENYWRITE and ACCESS_READWRITE, otherwise
* DosQueryFileInfo() will fail if we try to get a file length, etc.
*/
rc = os2err(DosOpen(filename, &hfile, &dummy, 0, FILE_NORMAL,
OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW,
OPEN_FLAGS_FAIL_ON_ERROR | OPEN_FLAGS_NO_LOCALITY |
539
OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
OPEN_ACCESS_READWRITE, NULL));
if (rc == NO_ERROR)
{
if (os2err(DosSetFilePtr(hfile, 0, FILE_END, &dummy)) != NO_ERROR)
{
DosClose(hfile);
hfile = NULLHANDLE;
} /* if */
} /* if */
return((void *) hfile);
} /* __PHYSFS_platformOpenAppend */
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
HFILE hfile = (HFILE) opaque;
PHYSFS_sint64 retval;
ULONG br;
for (retval = 0; retval < count; retval++)
{
564
os2err(DosRead(hfile, buffer, size, &br));
565
566
if (br < size)
{
567
DosSetFilePtr(hfile, -br, FILE_CURRENT, &br); /* try to cleanup. */
568
569
570
return(retval);
} /* if */
571
buffer = (void *) ( ((char *) buffer) + size );
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
} /* for */
return(retval);
} /* __PHYSFS_platformRead */
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
PHYSFS_uint32 size, PHYSFS_uint32 count)
{
HFILE hfile = (HFILE) opaque;
PHYSFS_sint64 retval;
ULONG bw;
for (retval = 0; retval < count; retval++)
{
587
os2err(DosWrite(hfile, buffer, size, &bw));
588
589
590
591
592
593
if (bw < size)
{
DosSetFilePtr(hfile, -bw, FILE_CURRENT, &bw); /* try to cleanup. */
return(retval);
} /* if */
594
buffer = (void *) ( ((char *) buffer) + size );
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
} /* for */
return(retval);
} /* __PHYSFS_platformWrite */
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
{
ULONG dummy;
HFILE hfile = (HFILE) opaque;
LONG dist = (LONG) pos;
/* hooray for 32-bit filesystem limits! :) */
BAIL_IF_MACRO((PHYSFS_uint64) dist != pos, ERR_SEEK_OUT_OF_RANGE, 0);
return(os2err(DosSetFilePtr(hfile, dist, FILE_BEGIN, &dummy)) == NO_ERROR);
} /* __PHYSFS_platformSeek */
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
{
ULONG pos;
HFILE hfile = (HFILE) opaque;
APIRET rc = os2err(DosSetFilePtr(hfile, 0, FILE_CURRENT, &pos));
BAIL_IF_MACRO(rc != NO_ERROR, NULL, -1);
return((PHYSFS_sint64) pos);
} /* __PHYSFS_platformTell */
PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
{
FILESTATUS3 fs;
HFILE hfile = (HFILE) opaque;
APIRET rc = DosQueryFileInfo(hfile, FIL_STANDARD, &fs, sizeof (fs));
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, -1);
return((PHYSFS_sint64) fs.cbFile);
} /* __PHYSFS_platformFileLength */
int __PHYSFS_platformEOF(void *opaque)
{
PHYSFS_sint64 len, pos;
len = __PHYSFS_platformFileLength(opaque);
BAIL_IF_MACRO(len == -1, NULL, 1); /* (*shrug*) */
pos = __PHYSFS_platformTell(opaque);
BAIL_IF_MACRO(pos == -1, NULL, 1); /* (*shrug*) */
return(pos >= len);
} /* __PHYSFS_platformEOF */
int __PHYSFS_platformFlush(void *opaque)
{
649
return(os2err(DosResetBuffer((HFILE) opaque) == NO_ERROR));
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
} /* __PHYSFS_platformFlush */
int __PHYSFS_platformClose(void *opaque)
{
return(os2err(DosClose((HFILE) opaque) == NO_ERROR));
} /* __PHYSFS_platformClose */
int __PHYSFS_platformDelete(const char *path)
{
if (__PHYSFS_platformIsDirectory(path))
return(os2err(DosDeleteDir(path)) == NO_ERROR);
return(os2err(DosDelete(path) == NO_ERROR));
} /* __PHYSFS_platformDelete */
PHYSFS_sint64 __PHYSFS_platformGetLastModTime(const char *fname)
{
670
PHYSFS_sint64 retval;
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
struct tm tm;
FILESTATUS3 fs;
APIRET rc = DosQueryPathInfo(fname, FIL_STANDARD, &fs, sizeof (fs));
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, -1);
/* Convert to a format that mktime() can grok... */
tm.tm_sec = ((PHYSFS_uint32) fs.ftimeLastWrite.twosecs) * 2;
tm.tm_min = fs.ftimeLastWrite.minutes;
tm.tm_hour = fs.ftimeLastWrite.hours;
tm.tm_mday = fs.fdateLastWrite.day;
tm.tm_mon = fs.fdateLastWrite.month;
tm.tm_year = ((PHYSFS_uint32) fs.fdateLastWrite.year) + 80;
tm.tm_wday = -1 /*st_localtz.wDayOfWeek*/;
tm.tm_yday = -1;
tm.tm_isdst = -1;
/* Convert to a format PhysicsFS can grok... */
retval = (PHYSFS_sint64) mktime(&tm);
BAIL_IF_MACRO(retval == -1, strerror(errno), -1);
return(retval);
} /* __PHYSFS_platformGetLastModTime */
/* Much like my college days, try to sleep for 10 milliseconds at a time... */
void __PHYSFS_platformTimeslice(void)
{
DosSleep(10);
} /* __PHYSFS_platformTimeslice(void) */
PHYSFS_uint64 __PHYSFS_platformGetThreadID(void)
{
703
704
PTIB ptib;
PPIB ppib;
705
706
707
708
709
/*
* Allegedly, this API never fails, but we'll punt and return a
* default value (zero might as well do) if it does.
*/
710
711
BAIL_IF_MACRO(os2err(DosGetInfoBlocks(&ptib, &ppib)) != NO_ERROR, 0, 0);
return((PHYSFS_uint64) ptib->tib_ordinal);
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
} /* __PHYSFS_platformGetThreadID */
void *__PHYSFS_platformCreateMutex(void)
{
HMTX hmtx = NULLHANDLE;
os2err(DosCreateMutexSem(NULL, &hmtx, 0, 0));
return((void *) hmtx);
} /* __PHYSFS_platformCreateMutex */
void __PHYSFS_platformDestroyMutex(void *mutex)
{
DosCloseMutexSem((HMTX) mutex);
} /* __PHYSFS_platformDestroyMutex */
int __PHYSFS_platformGrabMutex(void *mutex)
{
/* Do _NOT_ call os2err() (which sets the physfs error msg) in here! */
return(DosRequestMutexSem((HMTX) mutex, SEM_INDEFINITE_WAIT) == NO_ERROR);
} /* __PHYSFS_platformGrabMutex */
void __PHYSFS_platformReleaseMutex(void *mutex)
{
DosReleaseMutexSem((HMTX) mutex);
} /* __PHYSFS_platformReleaseMutex */
741
742
743
744
745
746
747
748
749
750
751
752
753
int __PHYSFS_platformAllocatorInit(void)
{
return(1); /* always succeeds. */
} /* __PHYSFS_platformAllocatorInit */
void __PHYSFS_platformAllocatorDeinit(void)
{
/* no-op */
} /* __PHYSFS_platformAllocatorInit */
754
void *__PHYSFS_platformAllocatorMalloc(PHYSFS_uint64 s)
756
BAIL_IF_MACRO(__PHYSFS_ui64FitsAddressSpace(s), ERR_OUT_OF_MEMORY, NULL);
757
#undef malloc
758
return(malloc((size_t) s));
759
760
761
} /* __PHYSFS_platformMalloc */
762
void *__PHYSFS_platformAllocatorRealloc(void *ptr, PHYSFS_uint64 s)
764
BAIL_IF_MACRO(__PHYSFS_ui64FitsAddressSpace(s), ERR_OUT_OF_MEMORY, NULL);
765
#undef realloc
766
return(realloc(ptr, (size_t) s));
767
768
769
770
771
772
773
774
775
} /* __PHYSFS_platformRealloc */
void __PHYSFS_platformAllocatorFree(void *ptr)
{
#undef free
free(ptr);
} /* __PHYSFS_platformAllocatorFree */
776
777
778
#endif /* defined OS2 */
/* end of os2.c ... */