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physfs/platform/os2.c

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/*
* OS/2 support routines for PhysicsFS.
*
* Please see the file LICENSE in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
#if HAVE_CONFIG_H
# include <config.h>
#endif
#if (defined OS2)
#define INCL_DOSSEMAPHORES
#define INCL_DOSDATETIME
#define INCL_DOSFILEMGR
#define INCL_DOSMODULEMGR
#define INCL_DOSERRORS
#define INCL_DOSDEVICES
#include <os2.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <assert.h>
static APIRET os2err(APIRET retval)
{
const char *err = NULL;
/*
* The ones that say "OS/2 reported" are more for PhysicsFS developer
* debugging. We give more generic messages for ones that are likely to
* fall through to an application.
*/
switch (retval)
{
case NO_ERROR: /* Don't set the PhysicsFS error message for these... */
case ERROR_INTERRUPT:
case ERROR_TIMEOUT:
break;
case ERROR_NOT_ENOUGH_MEMORY:
err = ERR_OUT_OF_MEMORY;
break;
case ERROR_FILE_NOT_FOUND:
err = "File not found";
break;
case ERROR_PATH_NOT_FOUND:
err = "Path not found";
break;
case ERROR_ACCESS_DENIED:
err = "Access denied";
break;
case ERROR_NOT_DOS_DISK:
err = "Not a DOS disk";
break;
case ERROR_DRIVE_LOCKED:
err = "Drive is locked";
break;
case ERROR_SHARING_VIOLATION:
err = "Sharing violation";
break;
case ERROR_CANNOT_MAKE:
err = "Cannot make";
break;
case ERROR_DEVICE_IN_USE:
err = "Device already in use";
break;
case ERROR_DRIVE_LOCKED:
err = "Drive is locked";
break;
case ERROR_OPEN_FAILED:
err = "Open failed";
break;
case ERROR_DISK_FULL:
err = "Disk is full";
break;
case ERROR_DISK_FULL:
err = "Pipe busy";
break;
case ERROR_SHARING_BUFFER_EXCEEDED:
err = "Sharing buffer exceeded";
break;
case ERROR_FILENAME_EXCED_RANGE:
case ERROR_META_EXPANSION_TOO_LONG:
err = "Filename too big";
break;
case ERROR_TOO_MANY_HANDLES:
case ERROR_TOO_OPEN_FILES:
case ERROR_NO_MORE_SEARCH_HANDLES:
err = "Too many open handles";
break;
case ERROR_SEEK_ON_DEVICE:
err = "Seek error"; /* Is that what this error means? */
break;
case ERROR_NEGATIVE_SEEK:
err = "Seek past start of file";
break;
case ERROR_CURRENT_DIRECTORY:
err = "Trying to delete current working directory";
break;
case ERROR_WRITE_PROTECT:
err = "Write protect error";
break;
case ERROR_WRITE_FAULT:
err = "Write fault";
break;
case ERROR_LOCK_VIOLATION:
err = "Lock violation";
break;
case ERROR_GEN_FAILURE:
err = "General failure";
break;
case ERROR_UNCERTAIN_MEDIA:
err = "Uncertain media";
break;
case ERROR_PROTECTION_VIOLATION:
err = "Protection violation";
break;
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:
err = "OS/2 reported an invalid parameter to an API function";
break;
case ERROR_NO_VOLUME_LABEL:
err = "OS/2 reported no volume label";
break;
case ERROR_NO_MORE_FILES:
err = "OS/2 reported no more files";
break;
case ERROR_MONITORS_NOT_SUPPORTED:
err = "OS/2 reported monitors not supported";
break;
case ERROR_BROKEN_PIPE:
err = "OS/2 reported a broken pipe";
break;
case ERROR_MORE_DATA:
err = "OS/2 reported \"more data\" (?)";
break;
case ERROR_EAS_DIDNT_FIT:
err = "OS/2 reported Extended Attributes didn't fit";
break;
case ERROR_INVALID_EA_NAME:
err = "OS/2 reported an invalid Extended Attribute name";
break;
case ERROR_EA_LIST_INCONSISTENT:
err = "OS/2 reported an inconsistent Extended Attribute list";
break;
case ERROR_EA_VALUE_UNSUPPORTABLE:
err = "OS/2 reported an unsupportable Extended Attribute value";
break;
case ERROR_SEM_OWNER_DIED:
err = "OS/2 reported that semaphore owner died";
break;
case ERROR_TOO_MANY_SEM_REQUESTS:
err = "OS/2 reported too many semaphore requests";
break;
case ERROR_SEM_BUSY:
err = "OS/2 reported a blocked semaphore";
break;
case ERROR_NOT_OWNER:
err = "OS/2 reported that we used a resource we don't own.";
break;
default:
err = "OS/2 reported back with unrecognized error code";
break;
} /* switch */
if (err != NULL)
__PHYSFS_setError(err);
return(retval);
} /* os2err */
static char *baseDir = NULL;
int __PHYSFS_platformInit(void)
{
char buf[CCHMAXPATH];
APIRET rc;
TIB tib;
PIB pib;
assert(baseDir == NULL);
BAIL_IF_MACRO(os2err(DosGetInfoBlocks(&tib, &pib)) != NO_ERROR, NULL, 0);
rc = DosQueryModuleName(pib.pib_hmte, sizeof (buf), (PCHAR) buf);
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, 0);
baseDir = (char *) malloc(strlen(buf) + 1);
BAIL_IF_MACRO(baseDir == NULL, ERR_OUT_OF_MEMORY, 0);
strcpy(baseDir);
return(1); /* success. */
} /* __PHYSFS_platformInit */
int __PHYSFS_platformDeinit(void)
{
assert(baseDir != NULL);
free(baseDir);
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 */
static int is_cdrom_drive(ULONG drive)
{
PHYSFS_uint16 cmd = (((drive & 0xFF) << 8) | 0);
BIOSPARAMETERBLOCK bpb;
ULONG ul1, ul2;
APIRET rc;
rc = DosDevIOCtl((HFILE) -1, IOCTL_DISK,
DSK_GETDEVICEPARAMS,
&cmd, sizeof (cmd), &ul1,
&bpb, sizeof (bpb), &u2);
/*
* !!! FIXME: Note that this tells us that the media is REMOVABLE...
* !!! FIXME: but it might not be a CD-ROM...check driver name?
*/
return((rc == NO_ERROR) && ((DiskData.fsDeviceAttr & 0x0001) == 0));
} /* is_cdrom_drive */
char **__PHYSFS_platformDetectAvailableCDs(void)
{
ULONG dummy;
ULONG drivemap;
ULONG i, bit;
APIRET rc;
char **retval;
PHYSFS_uint32 cd_count = 0;
retval = (char **) malloc(sizeof (char *));
BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
*retval = NULL;
rc = DosQueryCurrentDisk(&dummy, &drivemap);
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, retval);
/* !!! FIXME: the a, b, and c drives are almost certainly NOT cdroms... */
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 **tmp = realloc(retval, sizeof (char *) * (cd_count + 1));
if (tmp)
{
char *str = (char *) malloc(4);
retval = tmp;
retval[cd_count - 1] = str;
if (str)
{
str[0] = ('A' + i);
str[1] = ':';
str[2] = '\\';
str[3] = '\0';
cd_count++;
} /* if */
} /* if */
} /* if */
} /* if */
} /* for */
return(retval);
} /* __PHYSFS_platformDetectAvailableCDs */
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
char *retval = (char *) malloc(strlen(baseDir) + 1);
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 */
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 */
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 = 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 */
LinkedStringList *__PHYSFS_platformEnumerateFiles(const char *dirname,
int omitSymLinks)
{
char spec[CCHMAXPATH];
LinkedStringList *retval = NULL, *p = NULL;
FINDFILEBUF3 fb;
HDIR hdir = HDIR_CREATE;
ULONG count = 1;
APIRET rc;
BAIL_IF_MACRO(strlen(dirname) > sizeof (spec) - 4, ERR_OS_ERROR, NULL);
strcpy(spec, dname)
strcat(spec, "*.*");
rc = DosFindFirst(spec, &hdir,
FILE_DIRECTORY | FILE_ARCHIVED |
FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM,
&fb, sizeof (fb), &count, FIL_STANDARD)
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, 0);
while (count == 1)
{
if (strcmp(fb.achName, ".") == 0)
continue;
if (strcmp(fb.achName, "..") == 0)
continue;
retval = __PHYSFS_addToLinkedStringList(retval, &p, fb.achName, -1);
DosFindNext(hdir, &fb, sizeof (fb), &count);
} /* while */
DosFindClose(hdir);
return(retval);
} /* __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(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. */
retval = (char *) 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 (os2err(rc) != NO_ERROR)
{
free(retval);
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;
APIRET rc = DosQueryPathInfo(fname, FIL_QUERYFULLNAME, buf, sizeof (buf));
BAIL_IF_MACRO(os2err(rc) != NO_ERROR, NULL, NULL);
retval = (char *) 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 *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 |
OPEN_FLAGS_NO_INHERIT | OPEN_SHARE_DENYWRITE |
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 |
OPEN_FLAGS_NO_INHERIT | OPEN_SHARE_DENYWRITE |
OPEN_ACCESS_READWRITE, NULL));
return((void *) hfile);
} /* __PHYSFS_platformOpenWrite */
void *__PHYSFS_platformOpenAppend(const char *filename)
{
ULONG dummy = 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.
*/
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 |
OPEN_FLAGS_NO_INHERIT | OPEN_SHARE_DENYWRITE |
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++)
{
APIRET rc = os2err(DosRead(hfile, buffer, size, &br));
if (br < size)
{
DosSetFilePtr(hfile, -bw, FILE_CURRENT, &br); /* try to cleanup. */
return(retval);
} /* if */
buffer = (void *) ( ((char *) buffer) + size) );
} /* 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++)
{
APIRET rc = os2err(DosWrite(hfile, buffer, size, &bw));
if (bw < size)
{
DosSetFilePtr(hfile, -bw, FILE_CURRENT, &bw); /* try to cleanup. */
return(retval);
} /* if */
buffer = (void *) ( ((char *) buffer) + size) );
} /* 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)
{
return(os2err(DosResetBuffers((HFILE) opaque) == NO_ERROR));
} /* __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)
{
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)
{
TIB tib;
PIB pib;
/*
* Allegedly, this API never fails, but we'll punt and return a
* default value (zero might as well do) if it does.
*/
BAIL_IF_MACRO(os2err(DosGetInfoBlocks(&tib, &pib)) != NO_ERROR, 0, 0);
return((PHYSFS_uint64) tib.tib_ordinal);
} /* __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 */
#endif /* defined OS2 */
/* end of os2.c ... */
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