diff --git a/command_line/CmdLine/Src/MacEmul/ErrMgr.c b/command_line/CmdLine/Src/MacEmul/ErrMgr.c
index 65bb89c..5fc621d 100644
--- a/command_line/CmdLine/Src/MacEmul/ErrMgr.c
+++ b/command_line/CmdLine/Src/MacEmul/ErrMgr.c
@@ -18,10 +18,11 @@ static const char *getsyserr(SInt16 msgNbr) {
         case -52: return "Get file position error";
         case -54: return "Invalid file access or invalid permissions";
         case -61: return "Write permissions error";
-        case -108: return "Null or invalid address detected";
-        case -109: return "invalid handle detected";
-        case -113: return "Directory not found";
-        case -120: return "User cancelled";
+        case -108: return "Out of available memory or buffer size exceeded";
+        case -109: return "NULL or invalid address detected";
+        case -113: return "invalid handle detected";
+        case -120: return "Directory not found";
+        case -128: return "User cancelled";
         case -192: return "Resource not found";
         case -1302: return "Not a file";
         case -1309: return "Seek position exceeds boundaries for filesystem";
diff --git a/command_line/CmdLine/Src/MacEmul/Files.c b/command_line/CmdLine/Src/MacEmul/Files.c
index 7216c6b..5246ee2 100644
--- a/command_line/CmdLine/Src/MacEmul/Files.c
+++ b/command_line/CmdLine/Src/MacEmul/Files.c
@@ -1,5 +1,7 @@
 #include "mwcc_decomp.h"
 
+#define OPTION_ASSERT(cond) do { if (!(cond)) { printf("%s:%u: failed assertion\n", __FILE__, __LINE__); abort(); } } while(0)
+
 typedef struct MacFileInfo {
     UInt32 ioFlCrDat;
     UInt32 ioFlMdDat;
@@ -9,141 +11,740 @@ typedef struct MacFileInfo {
     SInt32 ioFlRPyLen;
     SInt32 ioFlStBlk;
     SInt32 ioFlRStBlk;
-    SInt32 ioFlAttrib;
+    SInt8 ioFlAttrib;
 } MacFileInfo;
 
 static int OS_GetFileParamInfo(const OSSpec *spec, MacFileInfo *mfi, FInfo *fi) {
+    time_t crtm;
+    time_t chtm;
+    OSType ft;
+    OSType fc;
+    UInt32 ttime;
+    UInt32 dsize;
+    UInt32 rsize;
+    OSSpec rsrc;
+    int ref;
+    int err;
+    char buffer[32];
+    UInt32 count;
+    Boolean isopen;
 
+    if (mfi) {
+        OS_GetFileTime(spec, &crtm, &chtm);
+        OS_TimeToMac(crtm, &ttime);
+        mfi->ioFlCrDat = ttime;
+        OS_TimeToMac(chtm, &ttime);
+        mfi->ioFlMdDat = ttime;
+    }
+
+    err = OS_Open(spec, OSReadOnly, &ref);
+    if (err < 0)
+        return err;
+
+    count = sizeof(buffer);
+    if (OS_Read(ref, buffer, &count))
+        count = 0;
+
+    if (mfi) {
+        mfi->ioFlAttrib = OS_IsDir(spec) ? ioDirMask : 0;
+        OS_GetSize(ref, &dsize);
+        mfi->ioFlLgLen = mfi->ioFlPyLen = dsize;
+        mfi->ioFlStBlk = 0;
+    }
+
+    OS_Close(ref);
+
+    OS_GetMacFileTypeMagic(buffer, count, &ft);
+    fc = 'CWIE';
+    if (OS_UsingMacResourceForkInfo() && !OS_GetRsrcOSSpec(spec, &rsrc, 0) && !OS_Status(&rsrc)) {
+        isopen = OS_SearchMacResourceForkList(&rsrc, &ref);
+        if (isopen || !OS_Open(&rsrc, 0, &ref)) {
+            if (mfi) {
+                OS_GetSize(ref, &rsize);
+                mfi->ioFlRLgLen = mfi->ioFlRPyLen = rsize;
+                mfi->ioFlRStBlk = 0;
+            }
+            OS_GetMacResourceForkCreatorAndType(ref, &fc, &ft);
+            if (!isopen)
+                OS_Close(ref);
+        }
+    } else {
+        if (mfi) {
+            mfi->ioFlRPyLen = 0;
+            mfi->ioFlRLgLen = 0;
+            mfi->ioFlRStBlk = 0;
+        }
+    }
+
+    fi->fdType = ft;
+    fi->fdCreator = fc;
+    fi->fdFlags = OS_IsLink(spec) ? kIsAlias : 0;
+    fi->fdLocation.v = 0;
+    fi->fdLocation.h = 0;
+    fi->fdFldr = 0;
+    return 0;
 }
 
 static int OS_SetFileParamInfo(const OSSpec *spec, MacFileInfo *mfi, FInfo *fi) {
+    time_t crtm;
+    time_t chtm;
+    OSSpec rspec;
+    int ref;
+    Boolean isopen;
 
+    OS_MacToTime(mfi->ioFlCrDat, &crtm);
+    OS_MacToTime(mfi->ioFlMdDat, &chtm);
+    OS_SetFileTime(spec, &crtm, &chtm);
+
+    OS_SetMacFileType(spec, fi->fdType);
+
+    if (OS_UsingMacResourceForkInfo() && !OS_GetRsrcOSSpec(spec, &rspec, 0) && !OS_Status(&rspec)) {
+        isopen = OS_SearchMacResourceForkList(&rspec, &ref);
+        if (!isopen && OS_Open(&rspec, OSReadWrite, &ref))
+            return 0;
+        OS_SetMacResourceForkCreatorAndType(ref, fi->fdCreator, fi->fdType);
+        if (!isopen)
+            OS_Close(ref);
+    }
+
+    return 0;
 }
 
 OSErr HCreate(SInt16 volume, SInt32 dirid, ConstStr255Param fileName, OSType creator, OSType type) {
+    FSSpec fss;
+    OSErr __err;
 
+    __err = FSMakeFSSpec(volume, dirid, fileName, &fss);
+    if (__err && __err != fnfErr)
+        return __err;
+    return FSpCreate(&fss, creator, type, -1);
 }
 
 OSErr HOpen(SInt16 vRefNum, SInt32 dirID, ConstStr255Param fileName, SInt8 permission, SInt16 *refNum) {
+    FSSpec fss;
+    OSErr __err;
 
+    __err = FSMakeFSSpec(vRefNum, dirID, fileName, &fss);
+    if (__err && __err != fnfErr)
+        return __err;
+    return FSpOpenDF(&fss, permission, refNum);
 }
 
 OSErr HOpenDF(SInt16 vRefNum, SInt32 dirID, ConstStr255Param fileName, SInt8 permission, SInt16 *refNum) {
+    FSSpec fss;
+    OSErr __err;
 
+    __err = FSMakeFSSpec(vRefNum, dirID, fileName, &fss);
+    if (__err && __err != fnfErr)
+        return __err;
+    return FSpOpenDF(&fss, permission, refNum);
 }
 
 OSErr HDelete(SInt16 vRefNum, SInt32 dirID, ConstStr255Param fileName) {
+    FSSpec fss;
+    OSErr __err;
 
+    __err = FSMakeFSSpec(vRefNum, dirID, fileName, &fss);
+    if (__err && __err != fnfErr)
+        return __err;
+    return FSpDelete(&fss);
 }
 
 OSErr HRename(SInt16 vRefNum, SInt32 dirID, ConstStr255Param oldName, ConstStr255Param newName) {
+    FSSpec fss;
+    OSErr __err;
 
+    __err = FSMakeFSSpec(vRefNum, dirID, oldName, &fss);
+    if (__err && __err != fnfErr)
+        return __err;
+    return FSpRename(&fss, newName);
 }
 
 OSErr HGetFInfo(SInt16 vRefNum, SInt32 dirID, ConstStr255Param fileName, FInfo *fndrInfo) {
+    FSSpec fss;
+    OSErr __err;
 
+    __err = FSMakeFSSpec(vRefNum, dirID, fileName, &fss);
+    if (__err && __err != fnfErr)
+        return __err;
+    return FSpGetFInfo(&fss, fndrInfo);
 }
 
 OSErr HSetFInfo(SInt16 vRefNum, SInt32 dirID, ConstStr255Param fileName, const FInfo *fndrInfo) {
+    FSSpec fss;
+    OSErr __err;
 
+    __err = FSMakeFSSpec(vRefNum, dirID, fileName, &fss);
+    if (__err && __err != fnfErr)
+        return __err;
+    return FSpSetFInfo(&fss, fndrInfo);
 }
 
 OSErr FSpCreate(const FSSpec *fss, OSType creator, OSType fileType, ScriptCode scriptTag) {
+    int err;
+    OSSpec spec;
+    FInfo finfo;
 
+    err = OS_FSSpec_To_OSSpec(fss, &spec);
+    if (err)
+        return OS_MacError(err);
+
+    if (!OS_Status(&spec))
+        return dupFNErr;
+
+    err = OS_Create(&spec, &OS_TEXTTYPE);
+    if (err)
+        return OS_MacError(err);
+
+    memset(&finfo, 0, sizeof(FInfo));
+    finfo.fdType = fileType;
+    finfo.fdCreator = creator;
+    FSpSetFInfo(fss, &finfo);
+    return 0;
 }
 
 OSErr FSpDirCreate(const FSSpec *fss, ScriptCode scriptTag, SInt32 *createdDirID) {
+    int err;
+    OSSpec spec;
 
+    err = OS_FSSpec_To_OSSpec(fss, &spec);
+    if (err)
+        return OS_MacError(err);
+
+    err = OS_Mkdir(&spec);
+    if (err)
+        return OS_MacError(err);
+
+    return 0;
 }
 
 OSErr FSpOpenDF(const FSSpec *fss, SInt8 permission, SInt16 *refNum) {
+    static OSOpenMode MacOpens[5] = {
+            OSReadWrite, OSReadOnly, OSWrite, OSReadWrite, OSReadWrite
+    };
 
+    OSSpec spec;
+    int err;
+    int ref;
+
+    *refNum = 0;
+
+    err = OS_FSSpec_To_OSSpec(fss, &spec);
+    if (err)
+        return OS_MacError(err);
+
+    if (OS_IsDir(&spec))
+        return dirNFErr;
+
+    err = OS_Open(&spec, MacOpens[permission], &ref);
+    if (err)
+        return OS_MacError(err);
+
+    *refNum = OS_RefToMac(ref);
+    return 0;
 }
 
 OSErr FSpDelete(const FSSpec *fss) {
+    OSSpec spec;
+    OSSpec rspec;
+    int err;
 
+    err = OS_FSSpec_To_OSSpec(fss, &spec);
+    if (err)
+        return OS_MacError(err);
+
+    err = OS_Delete(&spec);
+    if (!OS_GetRsrcOSSpec(&spec, &rspec, 0)) {
+        err = OS_Delete(&rspec);
+        OS_CleanupMacResourceForkDir(&rspec.path);
+    }
+    return OS_MacError(err);
 }
 
 OSErr FSpRename(const FSSpec *oldfss, ConstStr255Param newName) {
+    FSSpec newfss;
+    OSSpec oldspec;
+    OSSpec newspec;
+    OSSpec oldrspec;
+    OSSpec newrspec;
+    int err;
 
+    err = OS_FSSpec_To_OSSpec(oldfss, &oldspec);
+    if (err)
+        return OS_MacError(err);
+
+    newfss.vRefNum = oldfss->vRefNum;
+    newfss.parID = oldfss->parID;
+    _pstrcpy(newfss.name, newName);
+
+    err = OS_FSSpec_To_OSSpec(&newfss, &newspec);
+    if (err)
+        return OS_MacError(err);
+
+    err = OS_Rename(&oldspec, &newspec);
+    if (!OS_GetRsrcOSSpec(&oldspec, &oldrspec, 0)) {
+        OS_GetRsrcOSSpec(&newspec, &newrspec, 0);
+        err = OS_Rename(&oldrspec, &newrspec);
+    }
+    return OS_MacError(err);
 }
 
 OSErr FSpGetFInfo(const FSSpec *fss, FInfo *fndrInfo) {
+    int err;
+    OSSpec spec;
+    FInfo fi;
 
+    err = OS_FSSpec_To_OSSpec(fss, &spec);
+    if (err)
+        return OS_MacError(err);
+
+    err = OS_GetFileParamInfo(&spec, 0, &fi);
+    if (err)
+        return OS_MacError(err);
+
+    memcpy(fndrInfo, &fi, sizeof(FInfo));
+    return 0;
 }
 
 OSErr FSpSetFInfo(const FSSpec *fss, const FInfo *fndrInfo) {
+    HParamBlockRec hpb;
+    OSErr err;
+    Str255 fname;
 
+    _pstrcpy(fname, fss->name);
+    hpb.fileParam.ioVRefNum = fss->vRefNum;
+    hpb.fileParam.ioDirID = fss->parID;
+    hpb.fileParam.ioNamePtr = fname;
+    hpb.fileParam.ioFDirIndex = 0;
+
+    err = PBHGetFInfoSync(&hpb);
+    if (!err) {
+        hpb.fileParam.ioFlFndrInfo = *fndrInfo;
+        err = PBHSetFInfoSync(&hpb);
+    }
+    return err;
 }
 
 OSErr HGetVol(StringPtr volName, SInt16 *vRefNum, SInt32 *dirID) {
+    OSSpec spec;
+    int err;
+    FSSpec fss;
+    char vn[256];
 
+    if (volName && volName[0]) {
+        p2cstrcpy(vn, volName);
+        err = OS_MakePathSpec(vn, 0, &spec.path);
+        if (err)
+            return OS_MacError(err);
+    } else {
+        err = OS_MakePathSpec(0, 0, &spec.path);
+        if (err)
+            return OS_MacError(err);
+    }
+
+    OS_MakeNameSpec("", &spec.name);
+    err = OS_OSSpec_To_FSSpec(&spec, &fss);
+    if (err)
+        return OS_MacError(err);
+
+    *vRefNum = fss.vRefNum;
+    *dirID = fss.parID;
+    return 0;
 }
 
 OSErr HSetVol(ConstStr63Param volName, SInt16 vRefNum, SInt32 dirID) {
+    FSSpec fss;
+    int err;
+    OSSpec spec;
+    OSErr __err;
 
+    __err = FSMakeFSSpec(vRefNum, dirID, volName ? volName : "\p", &fss);
+    if (__err && __err != fnfErr)
+        return __err;
+
+    err = OS_FSSpec_To_OSSpec(&fss, &spec);
+    if (err)
+        return OS_MacError(err);
+
+    return OS_MacError(OS_Chdir(&spec.path));
 }
 
 OSErr FlushVol(ConstStr63Param volName, SInt16 vRefNum) {
-
+    return 0;
 }
 
 OSErr FSRead(SInt16 fRefNum, SInt32 *Size, void *Buffer) {
+    if (fRefNum == 0)
+        return rfNumErr;
 
+    return OS_MacError(OS_Read(OS_MacToRef(fRefNum), Buffer, (UInt32 *) Size));
 }
 
 OSErr FSWrite(SInt16 fRefNum, SInt32 *Size, const void *Buffer) {
+    if (fRefNum == 0)
+        return rfNumErr;
 
+    return OS_MacError(OS_Write(OS_MacToRef(fRefNum), Buffer, (UInt32 *) Size));
 }
 
 OSErr FSClose(SInt16 fRefNum) {
+    OSErr err;
+    OSSpec *rspec;
+    int ref;
+    UInt32 size;
+    int oerr;
 
+    if (fRefNum == 0)
+        return rfNumErr;
+
+    ref = OS_MacToRef(fRefNum);
+    rspec = OS_GetMacResourceForkFromRef(ref);
+    if (rspec) {
+        oerr = OS_GetSize(ref, &size);
+        err = OS_MacError(OS_Close(ref));
+        if (!oerr && !size) {
+            OS_Delete(rspec);
+            OS_CleanupMacResourceForkDir(&rspec->path);
+        }
+        OS_RemoveMacResourceForkRef(ref);
+    } else {
+        err = OS_MacError(OS_Close(ref));
+    }
+
+    return err;
 }
 
 OSErr GetEOF(SInt16 fRefNum, SInt32 *curEOF) {
+    if (fRefNum == 0)
+        return rfNumErr;
 
+    return OS_MacError(OS_GetSize(OS_MacToRef(fRefNum), (UInt32 *) curEOF));
 }
 
 OSErr SetEOF(SInt16 fRefNum, SInt32 newEOF) {
+    if (fRefNum == 0)
+        return rfNumErr;
 
+    return OS_MacError(OS_SetSize(OS_MacToRef(fRefNum), newEOF));
 }
 
 OSErr GetFPos(SInt16 fRefNum, SInt32 *pos) {
+    if (fRefNum == 0)
+        return rfNumErr;
 
+    return OS_MacError(OS_Tell(OS_MacToRef(fRefNum), pos));
 }
 
-OSErr SetFPos(SInt16 fRefNum, SInt16 posMode, SInt32 posOffset) {
+static OSSeekMode MacSeek[4] = {
+        OSSeekAbs, OSSeekAbs, OSSeekEnd, OSSeekRel
+};
 
+OSErr SetFPos(SInt16 fRefNum, SInt16 posMode, SInt32 posOffset) {
+    SInt32 pos;
+    SInt32 npos;
+    UInt32 size;
+    int err;
+    int ref;
+
+    ref = OS_MacToRef(fRefNum);
+    if (fRefNum == 0)
+        return rfNumErr;
+
+    if (posMode & 3) {
+        err = OS_Tell(ref, &pos);
+        if (err)
+            return OS_MacError(err);
+
+        err = OS_GetSize(ref, &size);
+        if (err)
+            return OS_MacError(err);
+
+        if ((posMode & 3) == fsFromStart) {
+            npos = posOffset;
+        } else if ((posMode & 3) == fsFromLEOF) {
+            npos = size + posOffset;
+        } else if ((posMode & 3) == fsFromMark) {
+            npos = pos + posOffset;
+        } else {
+            return paramErr;
+        }
+
+        err = OS_Seek(ref, OSSeekAbs, npos);
+        if (err)
+            return OS_MacError(err);
+
+        if (npos > size) {
+            OS_Seek(ref, OSSeekAbs, pos);
+            return eofErr;
+        }
+    }
+
+    return 0;
 }
 
 OSErr GetVInfo(SInt16 vRefNum, StringPtr name, SInt16 *vRef, SInt32 *hDir) {
+    int err;
+    OSNameSpec spec;
+    SInt32 parID;
 
+    *vRef = 0;
+    *hDir = 0;
+
+    err = OS_VolDir_To_OSNameSpec(vRefNum, 2, &spec, &parID);
+    if (!err) {
+        OS_NameSpecToString(&spec, (char *) name, 256);
+        c2pstr((char *) name);
+        _pstrcharcat(name, OS_PATHSEP);
+        return 0;
+    } else {
+        return OS_MacError(err);
+    }
 }
 
 OSErr PBWriteSync(ParmBlkPtr paramBlock) {
+    int err;
+    int ref;
 
+    ref = OS_MacToRef(paramBlock->ioParam.ioRefNum);
+    if (!paramBlock->ioParam.ioRefNum) {
+        return (paramBlock->ioParam.ioResult = rfNumErr);
+    } else {
+        if (paramBlock->ioParam.ioPosMode & 3) {
+            err = OS_Seek(ref, MacSeek[paramBlock->ioParam.ioPosMode & 3], paramBlock->ioParam.ioPosOffset);
+            if (err)
+                return (paramBlock->ioParam.ioResult = OS_MacError(err));
+        }
+        paramBlock->ioParam.ioActCount = paramBlock->ioParam.ioReqCount;
+        err = OS_Write(ref, paramBlock->ioParam.ioBuffer, (UInt32 *) &paramBlock->ioParam.ioActCount);
+        return (paramBlock->ioParam.ioResult = OS_MacError(err));
+    }
 }
 
 OSErr PBHGetFInfoSync(HParmBlkPtr paramBlock) {
+    HFileParam fp;
+    FSSpec fss;
+    OSErr err;
+    int oserr;
+    OSSpec spec;
+    MacFileInfo mfi;
+    FInfo fi;
 
+    memcpy(&fp, &paramBlock->fileParam, sizeof(HFileParam));
+    err = FSMakeFSSpec(fp.ioVRefNum, fp.ioDirID, (fp.ioFDirIndex != -1) ? fp.ioNamePtr : "\p", &fss);
+    if (!err) {
+        oserr = OS_FSSpec_To_OSSpec(&fss, &spec);
+        if (!oserr) {
+            OS_GetFileParamInfo(&spec, &mfi, &fi);
+            fp.ioFlCrDat = mfi.ioFlCrDat;
+            fp.ioFlMdDat = mfi.ioFlMdDat;
+            fp.ioFlLgLen = mfi.ioFlLgLen;
+            fp.ioFlPyLen = mfi.ioFlPyLen;
+            fp.ioFlRLgLen = mfi.ioFlRLgLen;
+            fp.ioFlRPyLen = mfi.ioFlRPyLen;
+            fp.ioFlAttrib = mfi.ioFlAttrib;
+            memcpy(&fp.ioFlFndrInfo, &fi, sizeof(FInfo));
+        } else {
+            memset(&fp, 0, sizeof(fp));
+        }
+    }
+
+    fp.ioResult = err;
+    memcpy(&paramBlock->fileParam, &fp, sizeof(HFileParam));
+    return err;
 }
 
 OSErr PBHSetFInfoSync(HParmBlkPtr paramBlock) {
+    HFileParam fp;
+    FInfo *pfi;
+    FSSpec fss;
+    OSErr err;
+    int oserr;
+    OSSpec spec;
+    MacFileInfo mfi;
+    FInfo fi;
 
+    pfi = &fp.ioFlFndrInfo;
+    memcpy(&fp, &paramBlock->fileParam, sizeof(HFileParam));
+    err = FSMakeFSSpec(fp.ioVRefNum, fp.ioDirID, fp.ioNamePtr, &fss);
+    if (!err) {
+        oserr = OS_FSSpec_To_OSSpec(&fss, &spec);
+        if (!oserr) {
+            memcpy(&fi, pfi, sizeof(FInfo));
+            memset(&mfi, 0, sizeof(mfi));
+            mfi.ioFlCrDat = fp.ioFlCrDat;
+            mfi.ioFlMdDat = fp.ioFlMdDat;
+            oserr = OS_SetFileParamInfo(&spec, &mfi, &fi);
+        }
+        err = OS_MacError(oserr);
+    }
+
+    fp.ioResult = err;
+    memcpy(&paramBlock->fileParam, &fp, sizeof(HFileParam));
+    return err;
 }
 
 OSErr PBGetCatInfoSync(CInfoPBPtr paramBlock) {
+    OSErr err;
+    FSSpec fss;
+    OSSpec spec;
+    int oserr;
+    HFileInfo hfi;
+    MacFileInfo mfi;
+    FInfo fi;
+    char tmp[64];
 
+    memcpy(&hfi, &paramBlock->hFileInfo, sizeof(HFileInfo));
+    err = FSMakeFSSpec(hfi.ioVRefNum, hfi.ioDirID, (hfi.ioFDirIndex > 0) ? hfi.ioNamePtr : "\p", &fss);
+    if (!err) {
+        oserr = OS_FSSpec_To_OSSpec(&fss, &spec);
+        if (!oserr) {
+            OS_VolDir_To_OSNameSpec(hfi.ioVRefNum, hfi.ioDirID, &spec.name, &hfi.ioFlParID);
+            if (hfi.ioNamePtr) {
+                OS_NameSpecToString(&spec.name, tmp, 256);
+                c2pstrcpy(hfi.ioNamePtr, tmp);
+            }
+            oserr = OS_GetFileParamInfo(&spec, &mfi, &fi);
+            if (!oserr) {
+                hfi.ioFlCrDat = mfi.ioFlCrDat;
+                hfi.ioFlMdDat = mfi.ioFlMdDat;
+                hfi.ioFlLgLen = mfi.ioFlLgLen;
+                hfi.ioFlPyLen = mfi.ioFlPyLen;
+                hfi.ioFlRLgLen = mfi.ioFlRLgLen;
+                hfi.ioFlRPyLen = mfi.ioFlRPyLen;
+                hfi.ioFlStBlk = mfi.ioFlRStBlk;
+                hfi.ioFlRStBlk = mfi.ioFlRStBlk;
+                hfi.ioFlAttrib = mfi.ioFlAttrib;
+                memcpy(&hfi.ioFlFndrInfo, &fi, sizeof(FInfo));
+            }
+        }
+        err = OS_MacError(err);
+    }
+
+    hfi.ioResult = err;
+    memcpy(&paramBlock->hFileInfo, &hfi, sizeof(HFileInfo));
+    return hfi.ioResult;
 }
 
 OSErr ResolveAliasFile(FSSpec *fss, Boolean resolveChains, Boolean *isFolder, Boolean *wasAliased) {
+    OSSpec spec;
+    int err;
 
+    *isFolder = 0;
+    *wasAliased = 0;
+
+    err = OS_FSSpec_To_OSSpec(fss, &spec);
+    if (err)
+        return OS_MacError(err);
+
+    *wasAliased = 0;
+    while (OS_IsLink(&spec)) {
+        *wasAliased = 1;
+        OS_ResolveLink(&spec, &spec);
+        if (!resolveChains)
+            break;
+    }
+
+    *isFolder = OS_IsDir(&spec);
+    err = OS_OSSpec_To_FSSpec(&spec, fss);
+    if (err)
+        return OS_MacError(err);
+
+    return 0;
 }
 
 OSErr FSMakeFSSpec(SInt16 vRefNum, SInt32 dirID, ConstStr255Param pathName, FSSpec *fss) {
+    OSSpec spec;
+    int err;
+    char path[256];
+    FSSpec tmpfss;
+    int idx;
+    char *pptr;
+    char vol[8];
+    char *nmptr;
+    int len;
 
+    fss->vRefNum = 0;
+    fss->parID = 0;
+
+    if (!vRefNum && !dirID) {
+        err = OS_GetCWD(&spec.path);
+        if (err) {
+            fss->name[0] = 0;
+            return OS_MacError(err);
+        }
+        OS_PathSpecToString(&spec.path, path, 256);
+    } else {
+#line 840
+        OPTION_ASSERT(vRefNum!=0);
+        tmpfss.vRefNum = vRefNum;
+        tmpfss.parID = dirID ? dirID : 2;
+        tmpfss.name[0] = 0;
+        err = OS_FSSpec_To_OSSpec(&tmpfss, &spec);
+        if (err) {
+            fss->name[0] = 0;
+            return OS_MacError(err);
+        }
+        OS_PathSpecToString(&spec.path, path, 256);
+    }
+
+    if (pstrchr(pathName, ':')) {
+        idx = 1;
+        if (pathName[1] != ':') {
+            while (idx <= pathName[0]) {
+                if (pathName[idx] == ':')
+                    break;
+                vol[idx - 1] = pathName[idx];
+                idx++;
+                if (idx >= 8) {
+                    fss->name[0] = 0;
+                    return nsvErr;
+                }
+            }
+            vol[idx - 1] = 0;
+            idx++;
+            if (!OS_MakePathSpec(vol, 0, &spec.path)) {
+                OS_PathSpecToString(&spec.path, path, 256);
+            } else {
+                c2pstrcpy(fss->name, vol);
+                return nsvErr;
+            }
+        }
+
+        pptr = path + strlen(path);
+        while (idx <= pathName[0]) {
+            if (pathName[idx] == ':') {
+                if (idx < pathName[0] && pathName[idx + 1] == ':') {
+                    do {
+                        pptr += sprintf(pptr, "../");
+                    } while (++idx < pathName[0] && pathName[idx + 1] == ':');
+                } else {
+                    *(pptr++) = OS_PATHSEP;
+                }
+            } else {
+                *(pptr++) = pathName[idx];
+            }
+            ++idx;
+        }
+        *pptr = 0;
+    } else {
+        p2cstrcpy(path + strlen(path), pathName);
+    }
+
+    err = OS_MakeSpec(path, &spec, 0);
+    if (!err) {
+        OS_OSSpec_To_FSSpec(&spec, fss);
+        return OS_MacError(OS_Status(&spec));
+    } else {
+        nmptr = OS_GetFileNamePtr(path);
+        len = strlen(nmptr);
+        if (len >= sizeof(fss->name))
+            len = 255;
+        fss->name[0] = len;
+        memcpy(&fss->name[1], nmptr, len);
+        return OS_MacError(err);
+    }
 }
 
 OSErr Allocate(SInt16 refNum, SInt32 *byteCount) {
-
+    return SetEOF(refNum, *byteCount);
 }
diff --git a/command_line/CmdLine/Src/MacEmul/Memory.c b/command_line/CmdLine/Src/MacEmul/Memory.c
index 8b956a0..0aa5d24 100644
--- a/command_line/CmdLine/Src/MacEmul/Memory.c
+++ b/command_line/CmdLine/Src/MacEmul/Memory.c
@@ -14,13 +14,13 @@ OSHandle *OS_PeekMacHandle(Handle h) {
 }
 
 static void FixHandlePtr(Handle h, void *ptr) {
-    HS(h)->hand.addr = ptr;
+    HS(h)->addr = ptr;
 }
 
 Handle OS_CreateMacHandle(OSHandle *h) {
     HandleStructure *hs = malloc(sizeof(HandleStructure));
     if (!hs) {
-        memError = -108;
+        memError = memFullErr;
         return 0;
     };
 
@@ -34,7 +34,7 @@ Handle OS_CreateMacHandle(OSHandle *h) {
 Handle OS_CreateMacHandleDup(OSHandle *h) {
     HandleStructure *hs = malloc(sizeof(HandleStructure));
     if (!hs) {
-        memError = -108;
+        memError = memFullErr;
         return 0;
     };
 
@@ -45,7 +45,7 @@ Handle OS_CreateMacHandleDup(OSHandle *h) {
 }
 
 void OS_DestroyMacHandle(Handle h, OSHandle *ret) {
-    *ret = HS(h)->hand;
+    *ret = *OS_PeekMacHandle(h);
     free(h);
 }
 
@@ -80,8 +80,10 @@ Handle NewHandleClear(UInt32 dataSize) {
 }
 
 Handle TempNewHandle(UInt32 dataSize, OSErr *resultCode) {
+    Handle hdl;
+
     *resultCode = 0;
-    Handle hdl = NewHandle(dataSize);
+    hdl = NewHandle(dataSize);
     if (!hdl)
         *resultCode = memError;
     return hdl;
@@ -92,7 +94,7 @@ void DisposeHandle(Handle h) {
         memError = OS_MacError(OS_FreeHandle(&HS(h)->hand));
         FixHandlePtr(h, 0);
     } else {
-        memError = -109;
+        memError = nilHandleErr;
     }
 }
 
@@ -104,7 +106,7 @@ void HLock(Handle h) {
         FixHandlePtr(h, buffer);
         memError = 0;
     } else {
-        memError = -109;
+        memError = nilHandleErr;
     }
 }
 
@@ -117,7 +119,7 @@ void HUnlock(Handle h) {
         memError = 0;
         OS_UnlockHandle(&HS(h)->hand);
     } else {
-        memError = -109;
+        memError = nilHandleErr;
     }
 }
 
@@ -145,7 +147,7 @@ SInt32 GetHandleSize(Handle h) {
         memError = OS_MacError(OS_GetHandleSize(&HS(h)->hand, &sz));
     } else {
         sz = 0;
-        memError = -109;
+        memError = nilHandleErr;
     }
 
     return sz;
@@ -161,15 +163,14 @@ OSErr PtrAndHand(const void *srcPtr, Handle destHandle, SInt32 size) {
     OSErr err;
 
     err = OS_MacError(OS_AppendHandle(&HS(destHandle)->hand, srcPtr, size));
-    FixHandlePtr(h, OS_LockHandle(&HS(destHandle)->hand));
-    OS_UnlockHandle(&HS(h)->hand);
+    FixHandlePtr(destHandle, OS_LockHandle(&HS(destHandle)->hand));
+    OS_UnlockHandle(&HS(destHandle)->hand);
 
     return err;
 }
 
 OSErr PtrToHand(const void *srcPtr, Handle *destHandle, SInt32 size) {
-    *destHandle = NewHandle(size);
-    if (!*destHandle)
+    if (!(*destHandle = NewHandle(size)))
         return MemError();
 
     HLock(*destHandle);
@@ -184,8 +185,7 @@ OSErr HandToHand(Handle *destHandle) {
     SInt32 size;
 
     size = GetHandleSize(srcHandle);
-    *destHandle = NewHandle(size);
-    if (!*destHandle)
+    if (!(*destHandle = NewHandle(size)))
         return MemError();
 
     HLock(*destHandle);
@@ -209,7 +209,7 @@ OSErr HandAndHand(Handle src, Handle dst) {
 }
 
 void MoveHHi(Handle theHandle) {
-    memError = theHandle ? 0 : -109;
+    memError = theHandle ? noErr : nilHandleErr;
 }
 
 void BlockMove(const void *srcPtr, void *destPtr, UInt32 byteCount) {
@@ -227,7 +227,7 @@ Ptr NewPtr(SInt32 dataSize) {
         dataSize = 1;
 
     p = malloc(dataSize);
-    memError = p ? 0 : -108;
+    memError = p ? noErr : memFullErr;
     return p;
 }
 
@@ -240,7 +240,7 @@ void DisposePtr(Ptr p) {
 Ptr NewPtrClear(SInt32 dataSize) {
     Ptr p;
 
-    memError = -108;
+    memError = memFullErr;
     if (!dataSize)
         dataSize = 1;
 
@@ -254,7 +254,7 @@ Ptr NewPtrClear(SInt32 dataSize) {
 }
 
 void DebugStr(ConstStringPtr str) {
-    fprintf(stderr, "*.*s", str[0], str[1], &str[1]);
+    fprintf(stderr, "%*.*s", str[0], str[0], &str[1]);
 }
 
 struct Zone *HandleZone() {
diff --git a/includes/common.h b/includes/common.h
index 809f99f..39a9abf 100644
--- a/includes/common.h
+++ b/includes/common.h
@@ -58,8 +58,10 @@ typedef uint8_t Boolean;
 enum {
     noErr = 0,
     abortErr = -27,
+    nsvErr = -35,
     ioErr = -36,
     bdNamErr = -37,
+    eofErr = -39,
     tmfoErr = -42,
     fnfErr = -43, // file not found
     dupFNErr = -48, // duplicate filename
@@ -121,6 +123,16 @@ enum {
     fsFromLEOF = 2,
     fsFromMark = 3
 };
+enum {
+    fsRtParID = 1,
+    fsRtDirID = 2
+};
+enum {
+    ioDirMask = 0x10
+};
+enum {
+    kIsAlias = 0x8000
+};
 
 typedef struct FSSpec {
     SInt16 vRefNum;
@@ -161,7 +173,7 @@ typedef struct DXInfo {
 } DXInfo;
 
 typedef struct IOParam {
-    SInt16 ioResult;
+    OSErr ioResult;
     SInt16 ioRefNum;
     char *ioBuffer;
     SInt32 ioReqCount;