176 lines
6.7 KiB
C
176 lines
6.7 KiB
C
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/************************************************************************/
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/* */
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/* HANDLE.H -- Handle Table Declarations */
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/* */
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/************************************************************************/
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/* Author: Gene Apperson */
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/* Copyright: 1991 Microsoft */
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/************************************************************************/
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/* File Description: */
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/* */
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/* */
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/************************************************************************/
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/* Revision History: */
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/* */
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/* 03/13/92 (GeneA): changed default size of handle table from 32 to */
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/* 48. Added FGetDosHandles prototype */
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/* */
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/************************************************************************/
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/* ------------------------------------------------------------ */
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/* rghte[x].flFlags bits */
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/* ------------------------------------------------------------ */
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#define fhteInherit 0x80000000 /* Is inheritable */
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#define fhteDevObj 0x40000000 /* Device (file or console) */
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#define mhteSpecific 0x0000ffff // SPECIFIC_RIGHTS_ALL
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#define mhteStandard 0x001f0000 // STANDARD_RIGHTS_ALL
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#define mhteSystem 0xff000000
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#define fhteStdRequire 0x000f0000 // STANDARD_RIGHTS_REQUIRED
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#define fhteSynch 0x00100000 // SYNCHRONIZE
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// Following specific rights are used by file/device object types.
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#define fhteDevShrRead 0x00000001
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#define fhteDevShrWrite 0x00000002
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#define fhteDevAccRead 0x00000020
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#define fhteDevAttrWrite 0x00000100 // FILE_WRITE_ATTRIBUTES
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#define fhteDevAccWrite 0x00000110
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#define fhteDevAccAll 0x00000130
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#define fhteDevAccAny 0x00000000
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#define fhteDevOverlapped 0x00001000
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#define mhteDevAcc 0x00000130
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#define mhteDevShr 0x00000003
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#define flMaskAll 0xffffffff
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//
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// MapHandle argument values.
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//
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// Object type values.
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//
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#define typSemaphore (1 << (typObjShiftAdjust + typObjSemaphore))
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#define typEvent (1 << (typObjShiftAdjust + typObjEvent))
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#define typMutex (1 << (typObjShiftAdjust + typObjMutex))
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#define typCrst (1 << (typObjShiftAdjust + typObjCrst))
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#define typProcess (1 << (typObjShiftAdjust + typObjProcess))
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#define typThread (1 << (typObjShiftAdjust + typObjThread))
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#define typFile (1 << (typObjShiftAdjust + typObjFile))
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#define typChange (1 << (typObjShiftAdjust + typObjChange))
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#define typIO (1 << (typObjShiftAdjust + typObjIO))
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#define typConsole (1 << (typObjShiftAdjust + typObjConsole))
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#define typConScreenbuf (1 << (typObjShiftAdjust + typObjConScreenbuf))
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#define typMapFile (1 << (typObjShiftAdjust + typObjMapFile))
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#define typSerial (1 << (typObjShiftAdjust + typObjSerial))
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#define typDevIOCtl (1 << (typObjShiftAdjust + typObjDevIOCtl))
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#define typPipe (1 << (typObjShiftAdjust + typObjPipe))
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#define typMailslot (1 << (typObjShiftAdjust + typObjMailslot))
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#define typToolhelp (1 << (typObjShiftAdjust + typObjToolhelp))
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#define typSocket (1 << (typObjShiftAdjust + typObjSocket))
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#define typTimer (1 << (typObjShiftAdjust + typObjTimer))
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#define typR0ObjExt (1 << (typObjShiftAdjust + typObjR0ObjExt))
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#define typMsgIndicator ( 1<<(typObjShiftAdjust + typObjMsgIndicator))
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#define typAny (~(0xffffffff << (1 + typObjShiftAdjust + typObjMaxValid)))
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#define typNone 0
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#define typMask typAny
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#define typSTDIN (typFile | typPipe | typSocket | typConsole)
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#define typSTDOUT (typFile | typPipe | typSocket | typConScreenbuf)
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//
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// Boolean flag to MapHandle (snuck inside objType parameter) to prevent the
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// object from being freed until UnlockObject() is called.
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//
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#define objLOCK 0x80000000
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// Handles are derived by left-shifting ihte's by this many bits.
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// This corresponds to the number of low bits reserved by NT.
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#define IHTETOHANDLESHIFT 2
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/* ------------------------------------------------------------ */
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/* */
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/* ------------------------------------------------------------ */
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#define chteInit 16
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#define chteInc 16
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#define ihteInvalid 0xFFFFFFFF
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#define ihteCurProc 0x7FFFFFFF
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#define ihteCurThread 0xFFFFFFFE
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#define hInvalid ((HANDLE)ihteInvalid)
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#define hCurProc ((HANDLE)ihteCurProc)
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#define hCurThread ((HANDLE)ihteCurThread)
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/* Maximum value for a normal handle (handles above this value
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* are either global or special.)
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*/
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#define hMaxValid 0x00FFFFFF
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#define ihteMaxValid (hMaxValid >> IHTETOHANDLESHIFT)
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/* Making this non-zero will keep us from allocating handle 0 */
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#define ihteDosMax 1
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typedef struct _hte {
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DWORD flFlags;
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OBJ * pobj;
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} HTE;
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typedef struct _htb {
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DWORD chteMax;
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HTE rghte[1];
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} HTB;
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// Handles are considered global if the high byte is equal to the high byte
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// of GLOBALHANDLEMASK.
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//
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// When handles are converted to ihtes, they are just right-shifted like
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// any other. That is, if n == IHTETOHANDLESHIFT, global ihtes have 0's
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// in the top n bits, the high byte of GLOBALHANDLEMASK in the next 8 bits.
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// The low n bits of the mask must be zero because those bits are lost
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// when handles are converted to ihtes.
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#define GLOBALHANDLEMASK (0x453a4d3cLU)
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// IHTEFROMHANDLEEX() uses a compare against a single watermark to
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// distinguish special handle values from local and global handles.
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// Thus, it's essential that global handles be numerically less
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// than any special handle value.
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/* ------------------------------------------------------------ */
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/* Function Prototypes */
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/* ------------------------------------------------------------ */
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GLOBAL HTB * KERNENTRY PhtbCreate (PDB *);
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GLOBAL VOID KERNENTRY PhtbDestroy(PDB *);
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GLOBAL DWORD KERNENTRY FlFlagsFromHnd (PDB *, HANDLE);
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GLOBAL HANDLE KERNENTRY AllocHandle(PDB *, OBJ *, DWORD);
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GLOBAL BOOL KERNENTRY FreeHandle(PDB *, HANDLE);
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GLOBAL VOID * KERNENTRY MapHandle(HANDLE, DWORD, DWORD);
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GLOBAL VOID * KERNENTRY MapHandleWithContext(PPDB,HANDLE,DWORD,DWORD);
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GLOBAL HANDLE KERNENTRY PreAllocHandle(PDB *);
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GLOBAL HANDLE KERNENTRY SetPreAllocHandle(PDB *, HANDLE, OBJ *, DWORD);
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GLOBAL VOID KERNENTRY FreePreAllocHandle(PDB *, HANDLE);
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GLOBAL VOID KERNENTRY CloseProcessHandles (PDB *);
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GLOBAL VOID KERNENTRY CloseDOSHandles (VOID);
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GLOBAL BOOL KERNENTRY FInheritHandles (PDB *, PDB *);
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GLOBAL VOID KERNENTRY CloseConsoleHandles (PDB *);
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GLOBAL DWORD KERNENTRY FlValidateSecurity(SECURITY_ATTRIBUTES *);
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GLOBAL BOOL KERNENTRY FGetDosHandles(PDB *);
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GLOBAL HANDLE KERNENTRY SearchForHandle(PDB *, OBJ *, DWORD);
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GLOBAL HANDLE KERNENTRY ConvertToGlobalHandle(HANDLE);
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/* ------------------------------------------------------------ */
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/************************************************************************/
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