int IFSEXPORT
FS_FINDFROMNAME(
struct fsfsi far * pfsfsi,
struct fsfsd far * pfsfsd,
char far * pData,
unsigned short cbData,
unsigned short far * pcMatch,
unsigned short usLevel,
unsigned long ulPosition,
char far * pszName,
unsigned short fsFlags
)
{
int rc;
struct findfromname far * p = &pRequest->data.findfromname;
if (rc = requestExchangeXS()) return rc;
pRequest->rq = FSRQ_FINDFROMNAME;
COPYPTR(&p->pVolData, queryVPFSD(pfsfsi->fsi_hVPB));
COPYPTR(&p->pSearchData, pfsfsd);
p->cbData = cbData;
p->cMatch = *pcMatch;
p->usLevel = usLevel;
p->fsFlags = fsFlags;
p->ulPosition = ulPosition;
if (strlen(pszName) >= CCHMAXPATH)
RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
strcpy(p->szName, pszName);
if (usLevel == FIL_QUERYEASFROMLIST) {
rc = copyEAOP((PEAOP) pData, CEA_GEAS_TO_BUF, 0);
if (rc) return rc;
p->cbData -= sizeof(EAOP);
}
if (rc = signalDaemonAndWait()) RELEASE_AND_EXIT(rc);
if (!pRequest->rc || pRequest->rc == ERROR_EAS_DIDNT_FIT) {
rc = FSH_PROBEBUF(PB_OPWRITE, pData, cbData);
if (rc) RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
if (usLevel == FIL_QUERYEASFROMLIST) {
rc = copyEAOP((PEAOP) pData, CEA_SET_OERROR, p->oError);
if (rc) RELEASE_AND_EXIT(rc);
pData += sizeof(EAOP);
cbData -= sizeof(EAOP);
}
memcpy(pData, pFSData, cbData);
}
*pcMatch = p->cMatch;
RELEASE_AND_EXIT(pRequest->rc);
}
int IFSEXPORT
FS_FSINFO(
unsigned short fsFlag,
unsigned short hVPB,
char far * pData,
unsigned short cbData,
unsigned short usLevel
)
{
int rc;
struct fsinfo far * p = &pRequest->data.fsinfo;
if (rc = requestExchangeXS()) return rc;
pRequest->rq = FSRQ_FSINFO;
p->fsFlag = fsFlag;
COPYPTR(&p->pVolData, queryVPFSD(hVPB));
p->cbData = cbData;
if ((fsFlag == INFO_SET) && cbData) {
rc = FSH_PROBEBUF(PB_OPREAD, pData, cbData);
if (rc) RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
memcpy(pFSData, pData, cbData);
}
p->usLevel = usLevel;
if (rc = signalDaemonAndWait()) RELEASE_AND_EXIT(rc);
if ((fsFlag == INFO_RETRIEVE) && !pRequest->rc) {
cbData = p->cbData;
if (cbData) {
rc = FSH_PROBEBUF(PB_OPWRITE, pData, cbData);
if (rc) RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
memcpy(pData, pFSData, cbData);
}
}
RELEASE_AND_EXIT(pRequest->rc);
}
int IFSEXPORT
FS_WRITE(
struct sffsi far * psffsi,
struct sffsd far * psffsd,
char far * pData,
unsigned short far * pcbLen,
unsigned short fsIOFlag
)
{
int rc;
struct write far * p = &pRequest->data.write;
if (rc = requestExchangeXS()) return rc;
pRequest->rq = FSRQ_WRITE;
COPYPTR(&p->pVolData, queryVPFSD(psffsi->sfi_hVPB));
p->sffsi = *psffsi;
COPYPTR(&p->pOpenFileData, psffsd);
p->cbLen = *pcbLen;
p->fsIOFlag = fsIOFlag;
if (*pcbLen) {
rc = FSH_PROBEBUF(PB_OPREAD, pData, *pcbLen);
if (rc) RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
memcpy(pFSData, pData, *pcbLen);
}
if (rc = signalDaemonAndWait()) RELEASE_AND_EXIT(rc);
*psffsi = p->sffsi;
*pcbLen = p->cbLen;
RELEASE_AND_EXIT(pRequest->rc);
}
int far pascal _loadds FS_FINDFIRST(
struct cdfsi far *pcdfsi,
struct cdfsd far *pcdfsd,
char far *pName,
unsigned short iCurDirEnd,
unsigned short attr,
struct fsfsi far *pfsfsi,
struct fsfsd far *pfsfsd,
char far *pData,
unsigned short cbData,
unsigned short far *pcMatch,
unsigned short level,
unsigned short flags
)
{
int rc;
unsigned long size;
char far *p;
FILEFINDBUF2 far *ff;
char buf[0x100];
kprintf("**** FS_FINDFIRST(\"%s\"), level=%u, flags=%u, curdir=%s, iCurDirEnd=%d\n",
pName, level, flags, pcdfsi->cdi_curdir, iCurDirEnd);
p = pName;
// skip a drive letter
if (p[1] == ':' && p[2] == '\\') p += 2;
/* find by trying to open */
*pcMatch = 0; rc = 2; // file not found
if (!MFS_OPEN(p, &size))
{
// file found
switch (level)
{
case 1:
*pcMatch = 1;
break;
case 2: // query EA size, specially for *.cmd
// query write access to the buffer
if (!FSH_PROBEBUF(1, pData, cbData))
{
// fill in the position field
*((unsigned long far *)pData) = 0; // sizeof(FILEFINDBUF2) - CCHMAXPATHCOMP;
pData += sizeof(unsigned long);
ff = (FILEFINDBUF2 far *)pData;
ff->cbFile = size;
ff->cbFileAlloc = size;
ff->cbList = 0; // sizeof(unsigned long);
// for files in root dir. or files in first-level dirs, return the
// full pathname; for deeper files, return a filename with last dir
// i.e.: s:\tools\netdrive\ndctl.exe -> netdrive\ndctl.exe
for (p = pName + strlen(pName) - 1; p > pName && *p != '\\'; p--) ;
if (p - pName > 2)
{
p--;
for (; p > pName && *p != '\\'; p--) ;
}
if (p - pName > 2)
p++;
else
p = pName;
ff->cchName = strlen(p);
if (attr & 0x0040)
{
strcpy(ff->achName, p);
attr &= ~0x0040;
}
else
FSH_UPPERCASE(p, ff->cchName, ff->achName);
kprintf("achName=%s, curdir=%s, cdi_end=%d\n", ff->achName, pcdfsi->cdi_curdir, pcdfsi->cdi_end);
}
else
kprintf("FSH_PROBEBUF failed!\n");
break;
default:
break;
}
rc = 0;
}
return rc;
}
int far pascal _loadds FS_READ(
struct sffsi far *psffsi,
struct sffsd far *psffsd,
char far *pData,
unsigned short far *pLen,
unsigned short IOflag
)
{
int rc;
kprintf("**** FS_READ\n");
filemax = psffsi->sfi_size;
filepos = psffsi->sfi_position;
kprintf("sfi_size = %lu, sfi_position = %lu\n", filemax, filepos);
kprintf("buf = 0x%08lx, size = %u\n", pData, *pLen);
if (*((unsigned long far *)psffsd + 1)) // direct read flag
{
if (!(rc = FSH_PROBEBUF(1, pData, *pLen)))
{
unsigned short cbSec = *pLen / secsize;
if (rc = FSH_DOVOLIO(8, // return errors directly, don't use harderr daemon
1 + 2 + 4, // ABORT | RETRY | FAIL
psffsi->sfi_hVPB,
pData,
&cbSec,
filepos / secsize))
kprintf("FSH_DOVOLIO failed, rc = %u\n", rc);
else
{
kprintf("FSH_DOVOLIO(buf = 0x%08lx, len = %u, start = %lu sectors) succeeded\n",
pData,
cbSec,
filepos / secsize);
*pLen = cbSec * secsize;
kprintf("%u butes read\n", *pLen);
filepos += *pLen;
rc = NO_ERROR;
}
}
else
{
kprintf("FS_READ: FSH_PROBEBUF failed!\n");
rc = 1;
}
}
else
{
filebase = *((unsigned long far *)psffsd);
advance_ptr();
if (rc = MFS_READ(pData, pLen))
{
kprintf("MFS_READ failed, rc = %u\n", rc);
}
}
psffsi->sfi_position = filepos;
return rc;
}
static APIRET copyEAOP(PEAOP pEABuf, USHORT usWhat, USHORT oError)
{
APIRET rc, rcfinal = NO_ERROR;
PFEALIST pfeas;
PGEALIST pgeas;
ULONG cbList;
/* Is the EAOP structure readable? */
rc = FSH_PROBEBUF(PB_OPREAD, (char far *) pEABuf, sizeof(EAOP));
if (rc) return ERROR_INVALID_PARAMETER;
pfeas = pEABuf->fpFEAList;
pgeas = pEABuf->fpGEAList;
/* Set the error code? */
if (usWhat & CEA_SET_OERROR) {
/* Is the EAOP structure writeable? */
rc = FSH_PROBEBUF(PB_OPWRITE, (char far *) pEABuf, sizeof(EAOP));
if (rc) return ERROR_INVALID_PARAMETER;
pEABuf->oError = oError;
}
if ((usWhat & CEA_FEAS_TO_BUF) ||
(usWhat & CEA_BUF_TO_FEAS))
{
/* Can we read the FEA list's cbList member? */
rc = FSH_PROBEBUF(PB_OPREAD, (char far *) pfeas, sizeof(ULONG));
if (rc) return ERROR_INVALID_PARAMETER;
/* Copy FEAs to the data exchange buffer? */
if (usWhat & CEA_FEAS_TO_BUF) {
/* Is cbList not too small or too big? */
if (pfeas->cbList < 4) return ERROR_EA_LIST_INCONSISTENT;
if (pfeas->cbList > 65536) return ERROR_EA_LIST_TOO_LONG;
/* Can we read the entire FEA list? */
rc = FSH_PROBEBUF(PB_OPREAD, (char far *) pfeas,
(USHORT) pfeas->cbList);
if (rc) return ERROR_INVALID_PARAMETER;
/* OK, copy the FEA list. */
memcpy(pFSData, pfeas, pfeas->cbList);
}
/* Copy data exchange buffer to the FEA buffer? */
if (usWhat & CEA_BUF_TO_FEAS) {
cbList = ((PFEALIST) pFSData)->cbList;
/* Is the FEA buffer big enough? In not, we copy as much as
possible and return an overflow error. */
if ((cbList > 65536) ||
(cbList > pfeas->cbList)) {
rcfinal = ERROR_BUFFER_OVERFLOW;
cbList = pfeas->cbList;
}
/* Can we write the entire FEA list? */
rc = FSH_PROBEBUF(PB_OPWRITE, (char far *) pfeas,
(USHORT) cbList);
if (rc) return ERROR_INVALID_PARAMETER;
/* OK, copy the FEA list. */
memcpy(pfeas, pFSData, cbList);
}
}
/* Copy GEAs to the data exchange buffer? */
if (usWhat & CEA_GEAS_TO_BUF) {
/* Can we read the GEA list's cbList member? */
rc = FSH_PROBEBUF(PB_OPREAD, (char far *) pgeas, sizeof(ULONG));
if (rc) return ERROR_INVALID_PARAMETER;
/* Is cbList not too small or too big? */
if (pgeas->cbList < 4) return ERROR_EA_LIST_INCONSISTENT;
if (pgeas->cbList > 65536) return ERROR_EA_LIST_TOO_LONG;
/* Can we read the entire GEA list? */
rc = FSH_PROBEBUF(PB_OPREAD, (char far *) pgeas,
(USHORT) pgeas->cbList);
if (rc) return ERROR_INVALID_PARAMETER;
/* OK, copy the FEA list. */
memcpy(pFSData, pgeas, pgeas->cbList);
}
return rc;
}
int IFSEXPORT
FS_IOCTL(
struct sffsi far * psffsi,
struct sffsd far * psffsd,
unsigned short usCat,
unsigned short usFunc,
char far * pParm,
unsigned short cbMaxParm,
unsigned short far * pcbParm,
char far * pData,
unsigned short cbMaxData,
unsigned short far * pcbData
)
{
int rc;
struct ioctl far * p = &pRequest->data.ioctl;
if (rc = requestExchangeXS()) return rc;
pRequest->rq = FSRQ_IOCTL;
COPYPTR(&p->pVolData, queryVPFSD(psffsi->sfi_hVPB));
p->sffsi = *psffsi;
COPYPTR(&p->pOpenFileData, psffsd);
p->usCat = usCat;
p->usFunc = usFunc;
p->cbParm = cbMaxParm ? *pcbParm : 0;
p->cbMaxData = cbMaxData;
p->cbData = 0;
/* Validate the parameter buffer. */
if (cbMaxParm) {
rc = FSH_PROBEBUF(PB_OPREAD, (char far *) pcbParm,
sizeof(USHORT));
if (rc) return ERROR_INVALID_PARAMETER;
if (*pcbParm > cbMaxParm) return ERROR_INVALID_PARAMETER;
if (*pcbParm) {
rc = FSH_PROBEBUF(PB_OPREAD, pParm, *pcbParm);
if (rc) return ERROR_INVALID_PARAMETER;
}
memcpy(pFSData, pParm, *pcbParm);
}
if (rc = signalDaemonAndWait()) RELEASE_AND_EXIT(rc);
if (p->cbData) {
rc = FSH_PROBEBUF(PB_OPWRITE, (char far *) pcbData,
sizeof(USHORT));
if (rc) RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
*pcbData = p->cbData;
if (!pRequest->rc) {
if (*pcbData > cbMaxData)
RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
if (*pcbData) {
rc = FSH_PROBEBUF(PB_OPWRITE, pData, *pcbData);
if (rc) RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
memcpy(pData, pFSData, *pcbData);
}
}
}
RELEASE_AND_EXIT(pRequest->rc);
}
int IFSEXPORT
FS_FSCTL(
union argdat far * pArgDat,
unsigned short iArgType,
unsigned short usFunc,
char far * pParm,
unsigned short cbMaxParm,
unsigned short far * pcbParm,
char far * pData,
unsigned short cbMaxData,
unsigned short far * pcbData
)
{
int rc;
struct fsctl far * p = &pRequest->data.fsctl;
/* Validate iArgType. */
if ((iArgType != FSCTL_ARG_FILEINSTANCE) &&
(iArgType != FSCTL_ARG_CURDIR) &&
(iArgType != FSCTL_ARG_NULL))
return ERROR_NOT_SUPPORTED;
/* Validate the parameter buffer. */
if (cbMaxParm) {
rc = FSH_PROBEBUF(PB_OPREAD, (char far *) pcbParm,
sizeof(USHORT));
if (rc) return ERROR_INVALID_PARAMETER;
if (*pcbParm > cbMaxParm) return ERROR_INVALID_PARAMETER;
if (*pcbParm) {
rc = FSH_PROBEBUF(PB_OPREAD, pParm, *pcbParm);
if (rc) return ERROR_INVALID_PARAMETER;
}
}
switch (usFunc) {
case FSCTL_STUBFSD_DAEMON_STARTED: /* daemon started */
if (pidDaemon) return ERROR_STUBFSD_DAEMON_RUNNING;
if (*pcbParm != sizeof(SETXCHGBUFFERS))
return ERROR_INVALID_PARAMETER;
return daemonStarted((PSETXCHGBUFFERS) pParm);
case FSCTL_STUBFSD_DAEMON_STOPPED: /* daemon stopped */
if (!pidDaemon)
return ERROR_STUBFSD_DAEMON_NOT_RUN;
if (queryCurrentPid() != pidDaemon)
return ERROR_STUBFSD_NOT_DAEMON;
return daemonStopped();
case FSCTL_STUBFSD_RESET: /* forcibly detach daemon */
return daemonStopped();
case FSCTL_STUBFSD_GET_REQUEST: /* wait for next request */
if (queryCurrentPid() != pidDaemon)
return ERROR_STUBFSD_NOT_DAEMON;
rc = FSH_SEMWAIT(&semRqAvail, TO_INFINITE);
if (rc) return rc;
rc = FSH_SEMSET(&semRqAvail);
if (rc) return rc;
return NO_ERROR;
case FSCTL_STUBFSD_DONE_REQUEST: /* signal request done */
if (queryCurrentPid() != pidDaemon)
return ERROR_STUBFSD_NOT_DAEMON;
rc = FSH_SEMCLEAR(&semRqDone);
if (rc) return rc;
return NO_ERROR;
default: /* unknown FSCTL, send to daemon */
if (rc = requestExchangeXS()) return rc;
pRequest->rq = FSRQ_FSCTL;
p->iArgType = iArgType;
p->usFunc = usFunc;
p->cbParm = cbMaxParm ? *pcbParm : 0;
p->cbMaxData = cbMaxData;
p->cbData = 0;
if (cbMaxParm) memcpy(pFSData, pParm, *pcbParm);
if (rc = signalDaemonAndWait()) RELEASE_AND_EXIT(rc);
if (p->cbData) {
rc = FSH_PROBEBUF(PB_OPWRITE, (char far *) pcbData,
sizeof(USHORT));
if (rc) RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
*pcbData = p->cbData;
if (!pRequest->rc) {
if (*pcbData > cbMaxData)
RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
if (*pcbData) {
rc = FSH_PROBEBUF(PB_OPWRITE, pData, *pcbData);
if (rc) RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
memcpy(pData, pFSData, *pcbData);
}
}
}
RELEASE_AND_EXIT(pRequest->rc);
}
}
int IFSEXPORT
FS_FINDFIRST(
struct cdfsi far * pcdfsi,
struct cdfsd far * pcdfsd,
char far * pszName,
unsigned short iCurDirEnd,
unsigned short fsAttr,
struct fsfsi far * pfsfsi,
struct fsfsd far * pfsfsd,
char far * pData,
unsigned short cbData,
unsigned short far * pcMatch,
unsigned short usLevel,
unsigned short fsFlags
)
{
int rc, rc2;
struct findfirst far * p = &pRequest->data.findfirst;
if (rc = requestExchangeXS()) return rc;
pRequest->rq = FSRQ_FINDFIRST;
COPYPTR(&p->pVolData, queryVPFSD(pcdfsi->cdi_hVPB));
p->cdfsi = *pcdfsi;
p->cdfsd = *pcdfsd;
if (strlen(pszName) >= CCHMAXPATH)
RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
strcpy(p->szName, pszName);
p->iCurDirEnd = iCurDirEnd;
p->fsAttr = fsAttr;
p->cbData = cbData;
p->cMatch = *pcMatch;
p->usLevel = usLevel;
p->fsFlags = fsFlags;
if (usLevel == FIL_QUERYEASFROMLIST) {
rc = copyEAOP((PEAOP) pData, CEA_GEAS_TO_BUF, 0);
if (rc) return rc;
p->cbData -= sizeof(EAOP);
}
if (rc = signalDaemonAndWait()) RELEASE_AND_EXIT(rc);
if (!pRequest->rc || pRequest->rc == ERROR_EAS_DIDNT_FIT) {
rc = FSH_PROBEBUF(PB_OPWRITE, pData, cbData);
if (rc) {
rc2 = undoFindFirst(pcdfsi);
if (rc2) RELEASE_AND_EXIT(rc2);
RELEASE_AND_EXIT(ERROR_INVALID_PARAMETER);
}
if (usLevel == FIL_QUERYEASFROMLIST) {
rc = copyEAOP((PEAOP) pData, CEA_SET_OERROR, p->oError);
if (rc) {
rc2 = undoFindFirst(pcdfsi);
if (rc2) RELEASE_AND_EXIT(rc2);
RELEASE_AND_EXIT(rc);
}
pData += sizeof(EAOP);
cbData -= sizeof(EAOP);
}
memcpy(pData, pFSData, cbData);
}
COPYPTR(pfsfsd, &p->pSearchData);
*pcMatch = p->cMatch;
RELEASE_AND_EXIT(pRequest->rc);
}