VOID CheckHeap(VOID)
{
USHORT usSel;
BYTE _huge * pHeapStart;
BYTE _huge * pHeapEnd;
BYTE _huge * pWork;
USHORT rc;
for (usSel = 0; usSel < MAX_SELECTORS; usSel++)
{
pHeapStart = rgpSegment[usSel];
if (!pHeapStart || pHeapStart == RESERVED_SEGMENT)
continue;
rc = MY_PROBEBUF(PB_OPREAD, (PBYTE)pHeapStart, HEAP_SIZE);
if (rc)
{
CritMessage("FAT32: Protection VIOLATION in CheckHeap (SYS%d)", rc);
Message("FAT32: Protection VIOLATION in CheckHeap (SYS%d)", rc);
return;
}
pHeapEnd = pHeapStart + HEAP_SIZE;
pWork = pHeapStart;
while (pWork < pHeapEnd)
pWork += BlockSize(pWork) + sizeof (ULONG);
if (pWork != pHeapEnd)
CritMessage("FAT32: Heap corruption found!");
}
}
static BOOL RemoveVolume(PVOLINFO pVolInfo)
{
PVOLINFO pNext;
USHORT rc;
if (pGlobVolInfo == pVolInfo)
{
pGlobVolInfo = pVolInfo->pNextVolInfo;
return TRUE;
}
pNext = (PVOLINFO)pGlobVolInfo;
while (pNext)
{
rc = MY_PROBEBUF(PB_OPWRITE, (PBYTE)pNext, sizeof (VOLINFO));
if (rc)
{
FatalMessage("FAT32: Protection VIOLATION in RemoveVolume!\n");
return FALSE;
}
if (pNext->pNextVolInfo == pVolInfo)
{
pNext->pNextVolInfo = pVolInfo->pNextVolInfo;
return TRUE;
}
pNext = (PVOLINFO)pNext->pNextVolInfo;
}
return FALSE;
}
USHORT GetLogBuffer(PBYTE pData, USHORT cbData, ULONG ulTimeOut)
{
USHORT rc;
if (f32Parms.fInShutDown)
return ERROR_ALREADY_SHUTDOWN;
rc = MY_PROBEBUF(PB_OPWRITE, pData, cbData);
if (rc)
{
Message("FAT32: Protection VIOLATION in GetLogBuffer! (SYS%d)", rc);
return rc;
}
_disable();
while (!fData && !f32Parms.fInShutDown)
{
rc = DevHelp_ProcBlock((ULONG)GetLogBuffer, ulTimeOut, WAIT_IS_INTERRUPTABLE);
if (rc)
{
_enable();
return rc;
}
_disable();
}
_enable();
if (f32Parms.fInShutDown)
return ERROR_ALREADY_SHUTDOWN;
strncpy(pData, szLogBuf, cbData);
if (strlen(szLogBuf) > cbData)
{
memmove(szLogBuf, szLogBuf + cbData, strlen(szLogBuf + cbData) + 1);
rc = ERROR_BUFFER_OVERFLOW;
}
else
{
*szLogBuf = 0;
fData = FALSE;
rc = 0;
}
return rc;
}
/*********************************************************************
* FindFreeSpace
*********************************************************************/
void * FindFreeSpace(void * pStart, size_t tSize)
{
BYTE _huge * pHeapStart;
BYTE _huge * pHeapEnd;
BYTE _huge * pWork;
BYTE _huge * pNext;
USHORT rc;
pHeapStart = pStart;
pHeapEnd = pHeapStart + HEAP_SIZE;
rc = MY_PROBEBUF(PB_OPREAD, (PBYTE)pHeapStart, HEAP_SIZE);
if (rc)
{
CritMessage("FAT32: Protection VIOLATION in FindFreeSpace (SYS%d)", rc);
Message("FAT32: Protection VIOLATION in FindFreeSpace (SYS%d)", rc);
return NULL;
}
pWork = pHeapStart;
while (pWork < pHeapEnd)
{
if (BlockSize(pWork) >= tSize && IsBlockFree(pWork))
{
ULONG ulRemaining = BlockSize(pWork) - tSize;
if (ulRemaining > sizeof (ULONG))
{
pNext = pWork + sizeof (ULONG) + tSize;
SetBlockSize(pNext, BlockSize(pWork) - tSize - sizeof (ULONG));
SetFree(pNext);
SetBlockSize(pWork, tSize);
}
SetInUse(pWork);
return pWork + sizeof (ULONG);
}
pWork += BlockSize(pWork) + sizeof (ULONG);
}
return NULL;
}
int far pascal __loadds FS_FINDFIRST(struct cdfsi far * pcdfsi, /* pcdfsi */
struct cdfsd far * pcdfsd, /* pcdfsd */
char far * pName, /* pName */
unsigned short usCurDirEnd, /* iCurDirEnd */
unsigned short usAttr, /* attr */
struct fsfsi far * pfsfsi, /* pfsfsi */
struct fsfsd far * pfsfsd, /* pfsfsd */
char far * pData, /* pData */
unsigned short cbData, /* cbData */
unsigned short far * pcMatch, /* pcMatch */
unsigned short usLevel, /* level */
unsigned short usFlags) /* flags */
{
PVOLINFO pVolInfo;
PFINDINFO pFindInfo = (PFINDINFO)pfsfsd;
USHORT rc;
USHORT usIndex;
USHORT usNeededLen;
USHORT usNumClusters;
ULONG ulCluster;
ULONG ulDirCluster;
PSZ pSearch;
PFINFO pNext;
ULONG ulNeededSpace;
USHORT usEntriesWanted;
EAOP EAOP;
PROCINFO ProcInfo;
if (f32Parms.fMessageActive & LOG_FS)
Message("FS_FINDFIRST for %s attr %X, Level %d, cbData %u, MaxEntries %u", pName, usAttr, usLevel, cbData, *pcMatch);
usEntriesWanted = *pcMatch;
*pcMatch = 0;
if (strlen(pName) > FAT32MAXPATH)
{
rc = ERROR_FILENAME_EXCED_RANGE;
goto FS_FINDFIRSTEXIT;
}
memset(pfsfsd, 0, sizeof (struct fsfsd));
pVolInfo = GetVolInfo(pfsfsi->fsi_hVPB);
if (IsDriveLocked(pVolInfo))
{
rc = ERROR_DRIVE_LOCKED;
goto FS_FINDFIRSTEXIT;
}
switch (usLevel)
{
case FIL_STANDARD :
usNeededLen = sizeof (FILEFNDBUF) - CCHMAXPATHCOMP;
break;
case FIL_QUERYEASIZE :
usNeededLen = sizeof (FILEFNDBUF2) - CCHMAXPATHCOMP;
break;
case FIL_QUERYEASFROMLIST :
usNeededLen = sizeof (EAOP) + sizeof (FILEFNDBUF3) + sizeof (ULONG);
break;
default :
rc = ERROR_NOT_SUPPORTED;
goto FS_FINDFIRSTEXIT;
}
if (usFlags == FF_GETPOS)
usNeededLen += sizeof (ULONG);
if (cbData < usNeededLen)
{
rc = ERROR_BUFFER_OVERFLOW;
goto FS_FINDFIRSTEXIT;
}
rc = MY_PROBEBUF(PB_OPWRITE, pData, cbData);
if (rc)
{
Message("FAT32: Protection VIOLATION in FS_FINDFIRST! (SYS%d)", rc);
return rc;
}
if (usLevel == FIL_QUERYEASFROMLIST)
{
memcpy(&EAOP, pData, sizeof (EAOP));
rc = MY_PROBEBUF(PB_OPREAD,
(PBYTE)EAOP.fpGEAList,
(USHORT)EAOP.fpGEAList->cbList);
if (rc)
goto FS_FINDFIRSTEXIT;
}
memset(pData, 0, cbData);
usNumClusters = 0;
ulDirCluster = FindDirCluster(pVolInfo,
pcdfsi,
pcdfsd,
pName,
usCurDirEnd,
RETURN_PARENT_DIR,
&pSearch);
if (ulDirCluster == FAT_EOF)
{
rc = ERROR_PATH_NOT_FOUND;
goto FS_FINDFIRSTEXIT;
}
ulCluster = ulDirCluster;
while (ulCluster && ulCluster != FAT_EOF)
{
usNumClusters++;
ulCluster = GetNextCluster( pVolInfo, ulCluster);
}
ulNeededSpace = sizeof (FINFO) + (usNumClusters - 1) * sizeof (ULONG);
ulNeededSpace += pVolInfo->usClusterSize;
GetProcInfo(&ProcInfo, sizeof ProcInfo);
pFindInfo->pInfo = (PFINFO)malloc((size_t)ulNeededSpace);
if (!pFindInfo->pInfo)
{
rc = ERROR_NOT_ENOUGH_MEMORY;
goto FS_FINDFIRSTEXIT;
}
memset(pFindInfo->pInfo, 0, (size_t)ulNeededSpace);
if (!pVolInfo->pFindInfo)
pVolInfo->pFindInfo = pFindInfo->pInfo;
else
{
pNext = (PFINFO)pVolInfo->pFindInfo;
while (pNext->pNextEntry)
pNext = (PFINFO)pNext->pNextEntry;
pNext->pNextEntry = pFindInfo->pInfo;
}
memcpy(&pFindInfo->pInfo->EAOP, &EAOP, sizeof (EAOP));
pFindInfo->usEntriesPerCluster = pVolInfo->usClusterSize / sizeof (DIRENTRY);
pFindInfo->usClusterIndex = 0;
pFindInfo->pInfo->rgClusters[0] = ulDirCluster;
pFindInfo->usTotalClusters = usNumClusters;
pFindInfo->pInfo->pDirEntries =
(PDIRENTRY)(&pFindInfo->pInfo->rgClusters[usNumClusters]);
if (f32Parms.fMessageActive & LOG_FIND)
Message("pInfo at %lX, pDirEntries at %lX",
pFindInfo->pInfo, pFindInfo->pInfo->pDirEntries);
pFindInfo->pInfo->pNextEntry = NULL;
memcpy(&pFindInfo->pInfo->ProcInfo, &ProcInfo, sizeof (PROCINFO));
strcpy(pFindInfo->pInfo->szSearch, pSearch);
FSH_UPPERCASE(pFindInfo->pInfo->szSearch, sizeof pFindInfo->pInfo->szSearch, pFindInfo->pInfo->szSearch);
pFindInfo->ulMaxEntry = ((ULONG)pVolInfo->usClusterSize / sizeof (DIRENTRY)) * usNumClusters;
if (!GetCluster(pVolInfo, pFindInfo, 0))
{
rc = ERROR_SYS_INTERNAL;
goto FS_FINDFIRSTEXIT;
}
pFindInfo->ulCurEntry = 0;
if (usAttr & 0x0040)
{
pFindInfo->fLongNames = TRUE;
usAttr &= ~0x0040;
}
else
pFindInfo->fLongNames = FALSE;
pFindInfo->bMustAttr = (BYTE)(usAttr >> 8);
usAttr |= (FILE_READONLY | FILE_ARCHIVED);
usAttr &= (FILE_READONLY | FILE_HIDDEN | FILE_SYSTEM | FILE_DIRECTORY | FILE_ARCHIVED);
pFindInfo->bAttr = (BYTE)~usAttr;
if (usLevel == FIL_QUERYEASFROMLIST)
{
memcpy(pData, &pFindInfo->pInfo->EAOP, sizeof (EAOP));
pData += sizeof (EAOP);
cbData -= sizeof (EAOP);
}
rc = 0;
for (usIndex = 0; usIndex < usEntriesWanted; usIndex++)
{
PULONG pulOrdinal;
if (usFlags == FF_GETPOS)
{
if (cbData < sizeof (ULONG))
{
rc = ERROR_BUFFER_OVERFLOW;
break;
}
pulOrdinal = (PULONG)pData;
pData += sizeof (ULONG);
cbData -= sizeof (ULONG);
}
rc = FillDirEntry(pVolInfo, &pData, &cbData, pFindInfo, usLevel);
if (!rc || (rc == ERROR_EAS_DIDNT_FIT && usIndex == 0))
{
if (usFlags == FF_GETPOS)
*pulOrdinal = pFindInfo->ulCurEntry - 1;
}
if (rc)
break;
}
if ((rc == ERROR_NO_MORE_FILES ||
rc == ERROR_BUFFER_OVERFLOW ||
rc == ERROR_EAS_DIDNT_FIT)
&& usIndex > 0)
rc = 0;
if (rc == ERROR_EAS_DIDNT_FIT && usIndex == 0)
usIndex = 1;
*pcMatch = usIndex;
FS_FINDFIRSTEXIT:
if (f32Parms.fMessageActive & LOG_FS)
Message("FS_FINDFIRST returned %d (%d entries)",
rc, *pcMatch);
if (rc && rc != ERROR_EAS_DIDNT_FIT)
{
FS_FINDCLOSE(pfsfsi, pfsfsd);
}
return rc;
}
int far pascal __loadds FS_FINDNEXT(
struct fsfsi far * pfsfsi, /* pfsfsi */
struct fsfsd far * pfsfsd, /* pfsfsd */
char far * pData, /* pData */
unsigned short cbData, /* cbData */
unsigned short far * pcMatch, /* pcMatch */
unsigned short usLevel, /* level */
unsigned short usFlags /* flag */
)
{
PVOLINFO pVolInfo;
PFINDINFO pFindInfo = (PFINDINFO)pfsfsd;
USHORT rc;
USHORT usIndex;
USHORT usNeededLen;
USHORT usEntriesWanted;
if (f32Parms.fMessageActive & LOG_FS)
Message("FS_FINDNEXT, level %u, cbData %u, MaxEntries %u", usLevel, cbData, *pcMatch);
usEntriesWanted = *pcMatch;
*pcMatch = 0;
pVolInfo = GetVolInfo(pfsfsi->fsi_hVPB);
if (IsDriveLocked(pVolInfo))
{
rc = ERROR_DRIVE_LOCKED;
goto FS_FINDNEXTEXIT;
}
switch (usLevel)
{
case FIL_STANDARD :
usNeededLen = sizeof (FILEFNDBUF) - CCHMAXPATHCOMP;
break;
case FIL_QUERYEASIZE :
usNeededLen = sizeof (FILEFNDBUF2) - CCHMAXPATHCOMP;
break;
case FIL_QUERYEASFROMLIST :
usNeededLen = sizeof (EAOP) + sizeof (FILEFNDBUF3) + sizeof (ULONG);
break;
default :
rc = ERROR_NOT_SUPPORTED;
goto FS_FINDNEXTEXIT;
}
if (usFlags == FF_GETPOS)
usNeededLen += sizeof (ULONG);
if (cbData < usNeededLen)
{
rc = ERROR_BUFFER_OVERFLOW;
goto FS_FINDNEXTEXIT;
}
rc = MY_PROBEBUF(PB_OPWRITE, pData, cbData);
if (rc)
{
Message("FAT32: Protection VIOLATION in FS_FINDNEXT!");
return rc;
}
if (usLevel == FIL_QUERYEASFROMLIST)
{
memcpy(&pFindInfo->pInfo->EAOP, pData, sizeof (EAOP));
rc = MY_PROBEBUF(PB_OPREAD,
(PBYTE)pFindInfo->pInfo->EAOP.fpGEAList,
(USHORT)pFindInfo->pInfo->EAOP.fpGEAList->cbList);
if (rc)
goto FS_FINDNEXTEXIT;
}
memset(pData, 0, cbData);
if (usLevel == FIL_QUERYEASFROMLIST)
{
memcpy(pData, &pFindInfo->pInfo->EAOP, sizeof (EAOP));
pData += sizeof (EAOP);
cbData -= sizeof (EAOP);
}
rc = 0;
for (usIndex = 0; usIndex < usEntriesWanted; usIndex++)
{
PULONG pulOrdinal = NULL;
if (usFlags == FF_GETPOS)
{
if (cbData < sizeof (ULONG))
{
rc = ERROR_BUFFER_OVERFLOW;
break;
}
pulOrdinal = (PULONG)pData;
pData += sizeof (ULONG);
cbData -= sizeof (ULONG);
}
rc = FillDirEntry(pVolInfo, &pData, &cbData, pFindInfo, usLevel);
if (!rc || (rc == ERROR_EAS_DIDNT_FIT && usIndex == 0))
{
if (usFlags == FF_GETPOS)
*pulOrdinal = pFindInfo->ulCurEntry - 1;
}
if (rc)
break;
}
if ((rc == ERROR_NO_MORE_FILES ||
rc == ERROR_BUFFER_OVERFLOW ||
rc == ERROR_EAS_DIDNT_FIT)
&& usIndex > 0)
rc = 0;
if (rc == ERROR_EAS_DIDNT_FIT && usIndex == 0)
usIndex = 1;
*pcMatch = usIndex;
FS_FINDNEXTEXIT:
if (f32Parms.fMessageActive & LOG_FS)
Message("FS_FINDNEXT returned %d (%d entries)",
rc, *pcMatch);
return rc;
}
void cdecl free(void * pntr)
#endif
{
USHORT usSel;
BYTE _huge * pHeapStart;
BYTE _huge * pHeapEnd;
BYTE _huge * pWork;
BYTE _huge * pToFree = pntr;
BYTE _huge * pPrev;
BYTE _huge * pNext;
USHORT rc;
if (f32Parms.fMessageActive & LOG_MEM)
Message("free %lX", pntr);
// CheckHeap();
if (OFFSETOF(pntr) == 0)
{
freeseg(pntr);
return;
}
GetMemAccess();
for (usSel = 0; usSel < MAX_SELECTORS; usSel++)
{
if (SELECTOROF(pntr) == SELECTOROF(rgpSegment[usSel]))
break;
}
if (usSel == MAX_SELECTORS)
{
CritMessage("FAT32: %lX not found in free!", pntr);
Message("FAT32: %lX not found in free!", pntr);
ReleaseMemAccess();
return;
}
pHeapStart = rgpSegment[usSel];
pHeapEnd = pHeapStart + HEAP_SIZE;
rc = MY_PROBEBUF(PB_OPREAD, (PBYTE)pHeapStart, HEAP_SIZE);
if (rc)
{
CritMessage("FAT32: Protection VIOLATION in free (SYS%d)", rc);
Message("FAT32: Protection VIOLATION in free (SYS%d)", rc);
ReleaseMemAccess();
return;
}
pWork = pHeapStart;
pPrev = NULL;
while (pWork < pHeapEnd)
{
if (pWork + sizeof (ULONG) == pToFree)
{
if (pPrev && IsBlockFree(pPrev))
{
SetBlockSize(pPrev,
BlockSize(pPrev) + BlockSize(pWork) + sizeof (ULONG));
pWork = pPrev;
}
pNext = pWork + BlockSize(pWork) + sizeof (ULONG);
if (pNext < pHeapEnd && IsBlockFree(pNext))
SetBlockSize(pWork, BlockSize(pWork) + BlockSize(pNext) + sizeof (ULONG));
SetFree(pWork);
break;
}
else
pPrev = pWork;
pWork += BlockSize(pWork) + sizeof (ULONG);
}
if (pWork >= pHeapEnd)
{
CritMessage("FAT32: ERROR: Address not found in free");
Message("ERROR: Address not found in free");
ReleaseMemAccess();
return;
}
/*
free selector if no longer needed
*/
if (usSel > 0 &&
BlockSize(rgpSegment[usSel]) == (HEAP_SIZE - sizeof (ULONG)) &&
IsBlockFree(rgpSegment[usSel]))
{
PBYTE p = rgpSegment[usSel];
rgpSegment[usSel] = NULL;
freeseg(p);
}
ReleaseMemAccess();
}
USHORT usModifyEAS(PVOLINFO pVolInfo, ULONG ulDirCluster, PSZ pszFileName, PEAOP pEAOP)
{
USHORT rc;
PFEALIST pTarFeal;
PFEALIST pSrcFeal;
PBYTE pSrcMax;
PFEA pSrcFea;
PFEA pTarFea;
if (f32Parms.fMessageActive & LOG_EAS)
Message("usModifyEAS for %s", pszFileName);
/*
Do not allow ea's file files with no filename (root)
*/
if (!strlen(pszFileName))
return 284;
rc = MY_PROBEBUF(PB_OPWRITE, (PBYTE)pEAOP, sizeof (EAOP));
if (rc)
{
Message("Protection violation in usModifyEAS (1) at %lX", pEAOP);
return rc;
}
pSrcFeal = pEAOP->fpFEAList;
if (pSrcFeal->cbList > MAX_EA_SIZE)
return ERROR_EA_LIST_TOO_LONG;
rc = MY_PROBEBUF(PB_OPREAD, (PBYTE)pSrcFeal, (USHORT)pSrcFeal->cbList);
if (rc)
{
Message("Protection violation in usModifyEAS (2) at %lX", pSrcFeal);
return rc;
}
if (pSrcFeal->cbList <= sizeof (ULONG))
return 0;
rc = usReadEAS(pVolInfo, ulDirCluster, pszFileName, &pTarFeal, TRUE);
if (rc)
return rc;
if (f32Parms.fMessageActive & LOG_EAS)
Message("cbList before = %lu", pTarFeal->cbList);
pSrcMax = (PBYTE)pSrcFeal + pSrcFeal->cbList;
pSrcFea = pSrcFeal->list;
while ((PBYTE)pSrcFea + sizeof (FEA) < pSrcMax)
{
PBYTE pName;
USHORT usNewSize = sizeof (FEA) + (USHORT)pSrcFea->cbName + 1 + pSrcFea->cbValue;
if ((PBYTE)pSrcFea + usNewSize > pSrcMax)
{
pEAOP->oError = (PBYTE)pSrcFea - (PBYTE)pEAOP;
rc = ERROR_EA_LIST_INCONSISTENT;
goto usStoreEASExit;
}
pName = (PBYTE)(pSrcFea + 1);
rc = FSH_CHECKEANAME(0x0001, pSrcFea->cbName, pName);
if (rc && pSrcFea->cbValue)
{
pEAOP->oError = (PBYTE)pSrcFea - (PBYTE)pEAOP;
goto usStoreEASExit;
}
if (!pSrcFea->cbValue || !pSrcFea->cbName)
usNewSize = 0;
else
usNewSize = sizeof (FEA) + (USHORT)pSrcFea->cbName + 1 + pSrcFea->cbValue;
pTarFea = FindEA(pTarFeal, pName, pSrcFea->cbName);
if (!pTarFea)
{
pTarFea = (PFEA)((PBYTE)pTarFeal + pTarFeal->cbList);
if (MAX_EA_SIZE - pTarFeal->cbList < (ULONG)usNewSize)
{
rc = ERROR_EAS_DIDNT_FIT;
goto usStoreEASExit;
}
memcpy(pTarFea, pSrcFea, usNewSize);
pTarFeal->cbList += usNewSize;
if (f32Parms.fMessageActive & LOG_EAS)
Message("Inserting EA '%s' (%u,%u)", pName,
pSrcFea->cbName, pSrcFea->cbValue);
}
else
{
USHORT usOldSize = sizeof (FEA) + (USHORT)pTarFea->cbName + 1 + pTarFea->cbValue;
USHORT usMoveSize = (USHORT)pTarFeal->cbList -
((PBYTE)pTarFea - (PBYTE)pTarFeal);
usMoveSize -= usOldSize;
if (usOldSize < usNewSize)
{
if (MAX_EA_SIZE - pTarFeal->cbList < (ULONG)(usNewSize - usOldSize))
{
rc = ERROR_EAS_DIDNT_FIT;
goto usStoreEASExit;
}
}
memmove((PBYTE)pTarFea + usNewSize,
(PBYTE)pTarFea + usOldSize, usMoveSize);
memcpy(pTarFea, pSrcFea, usNewSize);
pTarFeal->cbList -= usOldSize;
pTarFeal->cbList += usNewSize;
if (f32Parms.fMessageActive & LOG_EAS)
Message("Updating EA '%s' (%u,%u)", pName,
pSrcFea->cbName, pSrcFea->cbValue);
}
usNewSize = sizeof (FEA) + (USHORT)pSrcFea->cbName + 1 + pSrcFea->cbValue;
pSrcFea = (PFEA)((PBYTE)pSrcFea + usNewSize);
}
if (f32Parms.fMessageActive & LOG_EAS)
Message("cbList after = %lu", pTarFeal->cbList);
if (pTarFeal->cbList > 4)
rc = usWriteEAS(pVolInfo, ulDirCluster, pszFileName, pTarFeal);
else
rc = usDeleteEAS(pVolInfo, ulDirCluster, pszFileName);
usStoreEASExit:
freeseg(pTarFeal);
if (f32Parms.fMessageActive & LOG_EAS)
Message("usModifyEAS for %s returned %d",
pszFileName, rc);
return rc;
}
USHORT usGetEAS(PVOLINFO pVolInfo, USHORT usLevel, ULONG ulDirCluster, PSZ pszFileName, PEAOP pEAOP)
{
USHORT rc;
PFEALIST pTarFeal;
PFEALIST pSrcFeal;
PFEA pSrcFea;
PFEA pTarFea;
PGEALIST pGeaList;
USHORT usMaxSize;
if (f32Parms.fMessageActive & LOG_EAS)
Message("usGetEAS for %s Level %d", pszFileName, usLevel);
/*
Checking all the arguments
*/
rc = MY_PROBEBUF(PB_OPWRITE, (PBYTE)pEAOP, sizeof (EAOP));
if (rc)
{
Message("Protection violation in usGetEAS (1) at %lX", pEAOP);
return rc;
}
pTarFeal = pEAOP->fpFEAList;
rc = MY_PROBEBUF(PB_OPREAD, (PBYTE)pTarFeal, sizeof (ULONG));
if (rc)
{
Message("Protection violation in usGetEAS (2) at %lX", pTarFeal);
return rc;
}
if (pTarFeal->cbList > MAX_EA_SIZE)
usMaxSize = (USHORT)MAX_EA_SIZE;
else
usMaxSize = (USHORT)pTarFeal->cbList;
if (usMaxSize < sizeof (ULONG))
return ERROR_BUFFER_OVERFLOW;
rc = MY_PROBEBUF(PB_OPWRITE, (PBYTE)pTarFeal, (USHORT)usMaxSize);
if (rc)
return rc;
if (usLevel == FIL_QUERYEASFROMLIST)
{
pGeaList = pEAOP->fpGEAList;
rc = MY_PROBEBUF(PB_OPREAD, (PBYTE)pGeaList, sizeof (ULONG));
if (rc)
return rc;
if (pGeaList->cbList > MAX_EA_SIZE)
return ERROR_EA_LIST_TOO_LONG;
rc = MY_PROBEBUF(PB_OPREAD, (PBYTE)pGeaList, (USHORT)pGeaList->cbList);
if (rc)
return rc;
}
else
pGeaList = NULL;
/*
Initialize the FEALIST
*/
memset(pTarFeal, 0, usMaxSize);
pTarFeal->cbList = sizeof (ULONG);
usMaxSize -= sizeof (ULONG);
pTarFea = pTarFeal->list;
/*
Does the EA Exist?
*/
rc = usReadEAS(pVolInfo, ulDirCluster, pszFileName, &pSrcFeal, FALSE);
if (rc)
goto usGetEASExit;
/*
If not, return
*/
if (usLevel == FIL_QUERYEASFROMLIST)
{
PBYTE pGeaMax;
PGEA pGea;
pGeaMax = (PBYTE)pGeaList + pGeaList->cbList;
pGea = pGeaList->list;
while ((PBYTE)pGea + sizeof (GEA) < pGeaMax)
{
USHORT usGeaSize = sizeof (GEA) + (USHORT)pGea->cbName;
USHORT usFeaSize;
if (pGea->szName + (USHORT)pGea->cbName > pGeaMax)
{
rc = ERROR_EA_LIST_INCONSISTENT;
goto usGetEASExit;
}
pSrcFea = FindEA(pSrcFeal, pGea->szName, pGea->cbName);
if (pSrcFea)
{
usFeaSize = sizeof (FEA) + (USHORT)pSrcFea->cbName + 1 + pSrcFea->cbValue;
if (usFeaSize > usMaxSize)
{
rc = ERROR_BUFFER_OVERFLOW;
pTarFeal->cbList = pSrcFeal->cbList;
goto usGetEASExit;
}
if (f32Parms.fMessageActive & LOG_EAS)
Message("Found %s", pSrcFea + 1);
memcpy(pTarFea, pSrcFea, usFeaSize);
}
else
{
usFeaSize = sizeof (FEA) + (USHORT)pGea->cbName + 1;
if (usFeaSize > usMaxSize)
{
rc = ERROR_BUFFER_OVERFLOW;
if (pSrcFeal)
pTarFeal->cbList = pSrcFeal->cbList;
else
pTarFeal->cbList = 4;
goto usGetEASExit;
}
if (f32Parms.fMessageActive & LOG_EAS)
Message("usGetEAS: %s not found!", pGea->szName);
pTarFea->fEA = 0x00;
pTarFea->cbName = pGea->cbName;
pTarFea->cbValue = 0;
strcpy((PBYTE)(pTarFea + 1), pGea->szName);
}
pTarFea = (PFEA)((PBYTE)pTarFea + usFeaSize);
pTarFeal->cbList += usFeaSize;
usMaxSize -= usFeaSize;
pGea = (PGEA)((PBYTE)pGea + usGeaSize);
}
}
else if (pSrcFeal)
{
PBYTE pSrcMax = (PBYTE)pSrcFeal + pSrcFeal->cbList;
pSrcFea = pSrcFeal->list;
while ((PBYTE)pSrcFea + sizeof (FEA) < pSrcMax)
{
USHORT usFeaSize = sizeof (FEA) + (USHORT)pSrcFea->cbName + 1 + pSrcFea->cbValue;
if (usFeaSize > usMaxSize)
{
rc = ERROR_BUFFER_OVERFLOW;
pTarFeal->cbList = pSrcFeal->cbList;
goto usGetEASExit;
}
if (f32Parms.fMessageActive & LOG_EAS)
Message("Found %s (%u,%u)", pSrcFea + 1, (USHORT)pSrcFea->cbName, pSrcFea->cbValue);
memcpy(pTarFea, pSrcFea, usFeaSize);
pTarFea = (PFEA)((PBYTE)pTarFea + usFeaSize);
pTarFeal->cbList += usFeaSize;
pSrcFea = (PFEA)((PBYTE)pSrcFea + usFeaSize);
usMaxSize -= usFeaSize;
}
}
rc = 0;
usGetEASExit:
if (pSrcFeal)
freeseg(pSrcFeal);
if (f32Parms.fMessageActive & LOG_EAS)
Message("usGetEAS for %s returned %d (%lu bytes in EAS)",
pszFileName, rc, pTarFeal->cbList);
return rc;
}