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platform_os2.c

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673 lines (540 loc) · 20.9 KB
 
Jul 6, 2017
Jul 6, 2017
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/*
* OS/2 support routines for PhysicsFS.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#define __PHYSICSFS_INTERNAL__
#include "physfs_platforms.h"
#ifdef PHYSFS_PLATFORM_OS2
#define INCL_DOSSEMAPHORES
#define INCL_DOSDATETIME
#define INCL_DOSFILEMGR
#define INCL_DOSMODULEMGR
#define INCL_DOSERRORS
#define INCL_DOSPROCESS
#define INCL_DOSDEVICES
#define INCL_DOSDEVIOCTL
#define INCL_DOSMISC
#include <os2.h>
#include <errno.h>
#include <time.h>
#include <ctype.h>
#include "physfs_internal.h"
static PHYSFS_ErrorCode errcodeFromAPIRET(const APIRET rc)
{
switch (rc)
{
case NO_ERROR: return PHYSFS_ERR_OK; /* not an error. */
case ERROR_INTERRUPT: return PHYSFS_ERR_OK; /* not an error. */
case ERROR_TIMEOUT: return PHYSFS_ERR_OK; /* not an error. */
case ERROR_NOT_ENOUGH_MEMORY: return ERR_OUT_OF_MEMORY;
case ERROR_FILE_NOT_FOUND: return PHYSFS_ERR_NOT_FOUND;
case ERROR_PATH_NOT_FOUND: return PHYSFS_ERR_NOT_FOUND;
case ERROR_ACCESS_DENIED: return PHYSFS_ERR_PERMISSION;
case ERROR_NOT_DOS_DISK: return PHYSFS_ERR_NOT_FOUND;
case ERROR_SHARING_VIOLATION: return PHYSFS_ERR_PERMISSION;
case ERROR_CANNOT_MAKE: return PHYSFS_ERR_IO; /* maybe this is wrong? */
case ERROR_DEVICE_IN_USE: return PHYSFS_ERR_BUSY;
case ERROR_OPEN_FAILED: return PHYSFS_ERR_IO; /* maybe this is wrong? */
case ERROR_DISK_FULL: return PHYSFS_ERR_NO_SPACE;
case ERROR_PIPE_BUSY: return PHYSFS_ERR_BUSY;
case ERROR_SHARING_BUFFER_EXCEEDED: return PHYSFS_ERR_IO;
case ERROR_FILENAME_EXCED_RANGE: return PHYSFS_ERR_BAD_FILENAME;
case ERROR_META_EXPANSION_TOO_LONG: return PHYSFS_ERR_BAD_FILENAME;
case ERROR_TOO_MANY_HANDLES: return PHYSFS_ERR_IO;
case ERROR_TOO_MANY_OPEN_FILES: return PHYSFS_ERR_IO;
case ERROR_NO_MORE_SEARCH_HANDLES: return PHYSFS_ERR_IO;
case ERROR_SEEK_ON_DEVICE: return PHYSFS_ERR_IO;
case ERROR_NEGATIVE_SEEK: return PHYSFS_ERR_INVALID_ARGUMENT;
/*!!! FIXME: Where did this go? case ERROR_DEL_CURRENT_DIRECTORY: return ERR_DEL_CWD;*/
case ERROR_WRITE_PROTECT: return PHYSFS_ERR_PERMISSION;
case ERROR_WRITE_FAULT: return PHYSFS_ERR_IO;
case ERROR_UNCERTAIN_MEDIA: return PHYSFS_ERR_IO;
case ERROR_PROTECTION_VIOLATION: return PHYSFS_ERR_IO;
case ERROR_BROKEN_PIPE: return PHYSFS_ERR_IO;
/* !!! FIXME: some of these might be PHYSFS_ERR_BAD_FILENAME, etc */
case ERROR_LOCK_VIOLATION:
case ERROR_GEN_FAILURE:
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:
case ERROR_NOT_OWNER:
return PHYSFS_ERR_OS_ERROR;
default: break;
} /* switch */
return PHYSFS_ERR_OTHER_ERROR;
} /* errcodeFromAPIRET */
/* (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((unsigned char *) spec, &hdir, FILE_DIRECTORY,
&fb, sizeof (fb), &count, FIL_STANDARD);
if (rc == NO_ERROR)
{
while (count == 1) /* while still entries to enumerate... */
{
if (__PHYSFS_stricmpASCII(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 */
static char *baseDir = NULL;
int __PHYSFS_platformInit(void)
{
return 1; /* it's all good. */
} /* __PHYSFS_platformInit */
int __PHYSFS_platformDeinit(void)
{
if (baseDir != NULL)
{
allocator.Free(baseDir);
baseDir = NULL;
} /* if */
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 */
/* looks like "CD01" in ASCII (littleendian)...used for an ioctl. */
#define CD01 0x31304443
static int is_cdrom_drive(ULONG drive)
{
PHYSFS_uint32 param, data;
ULONG ul1, ul2;
APIRET rc;
HFILE hfile = NULLHANDLE;
unsigned 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,
&param, sizeof (param), &ul1, &data, sizeof (data), &ul2);
DosClose(hfile);
return ((rc == NO_ERROR) && (PHYSFS_swapULE32(data) == CD01));
} /* is_cdrom_drive */
void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
{
ULONG dummy = 0;
ULONG drivemap = 0;
ULONG i, bit;
const APIRET rc = DosQueryCurrentDisk(&dummy, &drivemap);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc),);
for (i = 0, bit = 1; i < 26; i++, bit <<= 1)
{
if (drivemap & bit) /* this logical drive exists. */
{
if ((is_cdrom_drive(i)) && (disc_is_inserted(i)))
{
char drive[4] = "x:\\";
drive[0] = ('A' + i);
cb(data, drive);
} /* if */
} /* if */
} /* for */
} /* __PHYSFS_platformDetectAvailableCDs */
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
if (baseDir == NULL)
{
char buf[CCHMAXPATH];
APIRET rc;
PTIB ptib;
PPIB ppib;
PHYSFS_sint32 len;
rc = DosGetInfoBlocks(&ptib, &ppib);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
rc = DosQueryModuleName(ppib->pib_hmte, sizeof (buf), (PCHAR) buf);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
/* chop off filename, leave path. */
for (len = strlen(buf) - 1; len >= 0; len--)
{
if (buf[len] == '\\')
{
buf[len] = '\0';
break;
} /* if */
} /* for */
assert(len > 0); /* should have been a "x:\\" on the front on string. */
/* The string is capitalized! Figure out the REAL case... */
cvt_path_to_correct_case(buf);
baseDir = (char *) allocator.Malloc(len + 1);
BAIL_IF_MACRO(baseDir == NULL, ERR_OUT_OF_MEMORY, 0);
strcpy(baseDir, buf);
} /* if */
char *retval = (char *) allocator.Malloc(strlen(baseDir) + 1);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
strcpy(retval, baseDir);
return retval;
} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformGetUserName(void)
{
return NULL; /* (*shrug*) */
} /* __PHYSFS_platformGetUserName */
char *__PHYSFS_platformGetUserDir(void)
{
return __PHYSFS_platformCalcBaseDir(NULL);
} /* __PHYSFS_platformGetUserDir */
/* !!! FIXME: can we lose the malloc here? */
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;
char *retval = allocator.Malloc(len);
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 */
void __PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks,
PHYSFS_EnumFilesCallback callback,
const char *origdir,
void *callbackdata)
{
char spec[CCHMAXPATH];
FILEFINDBUF3 fb;
HDIR hdir = HDIR_CREATE;
ULONG count = 1;
APIRET rc;
if (strlen(dirname) > sizeof (spec) - 5)
{
__PHYSFS_setError(ERR_BAD_FILENAME);
return;
} /* if */
strcpy(spec, dirname);
strcat(spec, (spec[strlen(spec) - 1] != '\\') ? "\\*.*" : "*.*");
rc = DosFindFirst((unsigned char *) spec, &hdir,
FILE_DIRECTORY | FILE_ARCHIVED |
FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM,
&fb, sizeof (fb), &count, FIL_STANDARD);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc),);
while (count == 1)
{
if ((strcmp(fb.achName, ".") != 0) && (strcmp(fb.achName, "..") != 0))
callback(callbackdata, origdir, fb.achName);
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(&currentDisk, &dummy);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 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. */
retval = (char *) allocator.Malloc(pathSize + 3); /* plus "x:\\" */
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
/* Actually get the string this time. */
rc = DosQueryCurrentDir(currentDisk, (PBYTE) (retval + 3), &pathSize);
if (rc != NO_ERROR)
{
allocator.Free(retval);
BAIL_MACRO(errcodeFromAPIRET(rc), NULL);
} /* if */
retval[0] = ('A' + (currentDisk - 1));
retval[1] = ':';
retval[2] = '\\';
return retval;
} /* __PHYSFS_platformCurrentDir */
char *__PHYSFS_platformRealPath(const char *_path)
{
const unsigned char *path = (const unsigned char *) _path;
char buf[CCHMAXPATH];
char *retval;
APIRET rc = DosQueryPathInfo(path, FIL_QUERYFULLNAME, buf, sizeof (buf));
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), NULL);
retval = (char *) allocator.Malloc(strlen(buf) + 1);
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
strcpy(retval, buf);
return retval;
} /* __PHYSFS_platformRealPath */
int __PHYSFS_platformMkDir(const char *_filename)
{
const unsigned char *filename = (const unsigned char *) _filename;
const APIRET rc = DosCreateDir(filename, NULL);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
return 1;
} /* __PHYSFS_platformMkDir */
void *__PHYSFS_platformOpenRead(const char *_filename)
{
const unsigned char *filename = (const unsigned 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.
*/
const APIRET rc = 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 |
OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |
OPEN_ACCESS_READONLY, NULL);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), NULL);
return ((void *) hfile);
} /* __PHYSFS_platformOpenRead */
void *__PHYSFS_platformOpenWrite(const char *_filename)
{
const unsigned char *filename = (const unsigned 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.
*/
const APIRET rc = 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 |
OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |
OPEN_ACCESS_READWRITE, NULL);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), NULL);
return ((void *) hfile);
} /* __PHYSFS_platformOpenWrite */
void *__PHYSFS_platformOpenAppend(const char *_filename)
{
const unsigned char *filename = (const unsigned char *) _filename;
ULONG dummy = 0;
HFILE hfile = NULLHANDLE;
APIRET rc;
/*
* File must be opened SHARE_DENYWRITE and ACCESS_READWRITE, otherwise
* DosQueryFileInfo() will fail if we try to get a file length, etc.
*/
rc = 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 |
OPEN_FLAGS_NOINHERIT | OPEN_SHARE_DENYWRITE |
OPEN_ACCESS_READWRITE, NULL);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), NULL);
rc = DosSetFilePtr(hfile, 0, FILE_END, &dummy);
if (rc != NO_ERROR)
{
DosClose(hfile);
BAIL_MACRO(errcodeFromAPIRET(rc), NULL);
} /* if */
return ((void *) hfile);
} /* __PHYSFS_platformOpenAppend */
PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buf, PHYSFS_uint64 len)
{
ULONG br = 0;
APIRET rc;
BAIL_IF_MACRO(!__PHYSFS_ui64FitsAddressSpace(len),ERR_INVALID_ARGUMENT,-1);
rc = DosRead((HFILE) opaque, buf, (ULONG) len, &br);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), (br > 0) ? ((PHYSFS_sint64) br) : -1);
return (PHYSFS_sint64) br;
} /* __PHYSFS_platformRead */
PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buf,
PHYSFS_uint64 len)
{
ULONG bw = 0;
APIRET rc;
BAIL_IF_MACRO(!__PHYSFS_ui64FitsAddressSpace(len),ERR_INVALID_ARGUMENT,-1);
rc = DosWrite((HFILE) opaque, buf, (ULONG) len, &bw);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), (bw > 0) ? ((PHYSFS_sint64) bw) : -1);
return (PHYSFS_sint64) bw;
} /* __PHYSFS_platformWrite */
int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
{
ULONG dummy;
HFILE hfile = (HFILE) opaque;
LONG dist = (LONG) pos;
APIRET rc;
/* hooray for 32-bit filesystem limits! :) */
BAIL_IF_MACRO((PHYSFS_uint64) dist != pos, ERR_SEEK_OUT_OF_RANGE, 0);
rc = DosSetFilePtr(hfile, dist, FILE_BEGIN, &dummy);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
return 1;
} /* __PHYSFS_platformSeek */
PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
{
ULONG pos;
HFILE hfile = (HFILE) opaque;
const APIRET rc = DosSetFilePtr(hfile, 0, FILE_CURRENT, &pos);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), -1);
return ((PHYSFS_sint64) pos);
} /* __PHYSFS_platformTell */
PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
{
FILESTATUS3 fs;
HFILE hfile = (HFILE) opaque;
const APIRET rc = DosQueryFileInfo(hfile, FIL_STANDARD, &fs, sizeof (fs));
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), -1);
return ((PHYSFS_sint64) fs.cbFile);
} /* __PHYSFS_platformFileLength */
int __PHYSFS_platformFlush(void *opaque)
{
const APIRET rc = DosResetBuffer((HFILE) opaque);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
return 1;
} /* __PHYSFS_platformFlush */
void __PHYSFS_platformClose(void *opaque)
{
DosClose((HFILE) opaque); /* ignore errors. You should have flushed! */
} /* __PHYSFS_platformClose */
int __PHYSFS_platformDelete(const char *_path)
{
FILESTATUS3 fs;
const unsigned char *path = (const unsigned char *) _path;
APIRET rc = DosQueryPathInfo(path, FIL_STANDARD, &fs, sizeof (fs));
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
rc = (fs.attrFile & FILE_DIRECTORY) ? DosDeleteDir(path) : DosDelete(path);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
return 1;
} /* __PHYSFS_platformDelete */
/* Convert to a format PhysicsFS can grok... */
PHYSFS_sint64 os2TimeToUnixTime(const FDATE *date, const FTIME *time)
{
struct tm tm;
tm.tm_sec = ((PHYSFS_uint32) time->.twosecs) * 2;
tm.tm_min = time->minutes;
tm.tm_hour = time->hours;
tm.tm_mday = date->day;
tm.tm_mon = date->month;
tm.tm_year = ((PHYSFS_uint32) date->year) + 80;
tm.tm_wday = -1 /*st_localtz.wDayOfWeek*/;
tm.tm_yday = -1;
tm.tm_isdst = -1;
return (PHYSFS_sint64) mktime(&tm);
} /* os2TimeToUnixTime */
int __PHYSFS_platformStat(const char *filename, PHYSFS_Stat *st)
{
struct tm tm;
FILESTATUS3 fs;
const unsigned char *fname = (const unsigned char *) _fname;
const APIRET rc = DosQueryPathInfo(fname, FIL_STANDARD, &fs, sizeof (fs));
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
if (fs.attrFile & FILE_DIRECTORY)
{
stat->filetype = PHYSFS_FILETYPE_DIRECTORY;
stat->filesize = 0;
} /* if */
else
{
stat->filetype = PHYSFS_FILETYPE_REGULAR;
stat->filesize = fs.cbFile;
} /* else */
stat->modtime = os2TimeToUnixTime(&fs.fdateLastWrite, &fs.ftimeLastWrite);
if (stat->modtime < 0)
stat->modtime = 0;
stat->accesstime = os2TimeToUnixTime(&fs.fdateLastAccess, &fs.ftimeLastAccess);
if (stat->accesstime < 0)
stat->accesstime = 0;
stat->createtime = os2TimeToUnixTime(&fs.fdateCreation, &fs.ftimeCreation);
if (stat->createtime < 0)
stat->createtime = 0;
stat->readonly = ((fs.attrFile & FILE_READONLY) == FILE_READONLY);
return 1;
} /* __PHYSFS_platformStat */
void *__PHYSFS_platformGetThreadID(void)
{
PTIB ptib;
PPIB ppib;
/*
* Allegedly, this API never fails, but we'll punt and return a
* default value (zero might as well do) if it does.
*/
const APIRET rc = DosGetInfoBlocks(&ptib, &ppib);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), 0);
return ((void *) ptib->tib_ordinal);
} /* __PHYSFS_platformGetThreadID */
void *__PHYSFS_platformCreateMutex(void)
{
HMTX hmtx = NULLHANDLE;
const APIRET rc = DosCreateMutexSem(NULL, &hmtx, 0, 0);
BAIL_IF_MACRO(rc != NO_ERROR, errcodeFromAPIRET(rc), NULL);
return ((void *) hmtx);
} /* __PHYSFS_platformCreateMutex */
void __PHYSFS_platformDestroyMutex(void *mutex)
{
DosCloseMutexSem((HMTX) mutex);
} /* __PHYSFS_platformDestroyMutex */
int __PHYSFS_platformGrabMutex(void *mutex)
{
/* Do _NOT_ set the physfs error message in here! */
return (DosRequestMutexSem((HMTX) mutex, SEM_INDEFINITE_WAIT) == NO_ERROR);
} /* __PHYSFS_platformGrabMutex */
void __PHYSFS_platformReleaseMutex(void *mutex)
{
DosReleaseMutexSem((HMTX) mutex);
} /* __PHYSFS_platformReleaseMutex */
/* !!! FIXME: Don't use C runtime for allocators? */
int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)
{
return 0; /* just use malloc() and friends. */
} /* __PHYSFS_platformSetDefaultAllocator */
#endif /* PHYSFS_PLATFORM_OS2 */
/* end of os2.c ... */