/*

* 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 ... */