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+/***********************************************************
+
+Copyright 1987, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+
+/* $Xorg: os.h,v 1.4 2001/02/09 02:05:15 xorgcvs Exp $ */
+
+#ifndef OS_H
+#define OS_H
+#include "misc.h"
+#define ALLOCATE_LOCAL_FALLBACK(_size) Xalloc((unsigned long)(_size))
+#define DEALLOCATE_LOCAL_FALLBACK(_ptr) Xfree((pointer)(_ptr))
+#include "Xalloca.h"
+
+#define NullFID ((FID) 0)
+
+#define SCREEN_SAVER_ON 0
+#define SCREEN_SAVER_OFF 1
+#define SCREEN_SAVER_FORCER 2
+#define SCREEN_SAVER_CYCLE 3
+
+#ifndef MAX_REQUEST_SIZE
+#define MAX_REQUEST_SIZE 65535
+#endif
+#ifndef MAX_BIG_REQUEST_SIZE
+#define MAX_BIG_REQUEST_SIZE 1048575
+#endif
+
+typedef pointer FID;
+typedef struct _FontPathRec *FontPathPtr;
+typedef struct _NewClientRec *NewClientPtr;
+
+#define xnfalloc(size) XNFalloc((unsigned long)(size))
+#define xnfrealloc(ptr, size) XNFrealloc((pointer)(ptr), (unsigned long)(size))
+
+#define xalloc(size) Xalloc((unsigned long)(size))
+#define xrealloc(ptr, size) Xrealloc((pointer)(ptr), (unsigned long)(size))
+#define xfree(ptr) Xfree((pointer)(ptr))
+
+#ifndef X_NOT_STDC_ENV
+#include <string.h>
+#else
+#ifdef SYSV
+#include <string.h>
+#else
+#include <strings.h>
+#endif
+#endif
+
+/* have to put $(SIGNAL_DEFINES) in DEFINES in Imakefile to get this right */
+#ifdef SIGNALRETURNSINT
+#define SIGVAL int
+#else
+#define SIGVAL void
+#endif
+
+extern int WaitForSomething(
+#if NeedFunctionPrototypes
+ int* /*pClientsReady*/
+#endif
+);
+
+#ifdef LBX
+#define ReadRequestFromClient(client) ((client)->readRequest(client))
+extern int StandardReadRequestFromClient(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+#else
+extern int ReadRequestFromClient(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+#endif /* LBX */
+
+extern Bool InsertFakeRequest(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/,
+ char* /*data*/,
+ int /*count*/
+#endif
+);
+
+extern int ResetCurrentRequest(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+
+extern void FlushAllOutput(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void FlushIfCriticalOutputPending(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void SetCriticalOutputPending(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern int WriteToClient(
+#if NeedFunctionPrototypes
+ ClientPtr /*who*/,
+ int /*count*/,
+ char* /*buf*/
+#endif
+);
+
+extern void ResetOsBuffers(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void CreateWellKnownSockets(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void ResetWellKnownSockets(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern XID
+AuthorizationIDOfClient(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+
+extern char *ClientAuthorized(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/,
+ unsigned int /*proto_n*/,
+ char* /*auth_proto*/,
+ unsigned int /*string_n*/,
+ char* /*auth_string*/
+#endif
+);
+
+extern Bool EstablishNewConnections(
+#if NeedFunctionPrototypes
+ ClientPtr /*clientUnused*/,
+ pointer /*closure*/
+#endif
+);
+
+extern void CheckConnections(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void CloseDownConnection(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+
+extern int AddEnabledDevice(
+#if NeedFunctionPrototypes
+ int /*fd*/
+#endif
+);
+
+extern int RemoveEnabledDevice(
+#if NeedFunctionPrototypes
+ int /*fd*/
+#endif
+);
+
+extern int OnlyListenToOneClient(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+
+extern int ListenToAllClients(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern int IgnoreClient(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+
+extern int AttendClient(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+
+extern int MakeClientGrabImpervious(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+
+extern int MakeClientGrabPervious(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/
+#endif
+);
+
+extern void Error(
+#if NeedFunctionPrototypes
+ char* /*str*/
+#endif
+);
+
+extern CARD32 GetTimeInMillis(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern int AdjustWaitForDelay(
+#if NeedFunctionPrototypes
+ pointer /*waitTime*/,
+ unsigned long /*newdelay*/
+#endif
+);
+
+typedef struct _OsTimerRec *OsTimerPtr;
+
+typedef CARD32 (*OsTimerCallback)(
+#if NeedFunctionPrototypes
+ OsTimerPtr /* timer */,
+ CARD32 /* time */,
+ pointer /* arg */
+#endif
+);
+
+extern void TimerInit(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern Bool TimerForce(
+#if NeedFunctionPrototypes
+ OsTimerPtr /* timer */
+#endif
+);
+
+#define TimerAbsolute (1<<0)
+#define TimerForceOld (1<<1)
+
+extern OsTimerPtr TimerSet(
+#if NeedFunctionPrototypes
+ OsTimerPtr /* timer */,
+ int /* flags */,
+ CARD32 /* millis */,
+ OsTimerCallback /* func */,
+ pointer /* arg */
+#endif
+);
+
+extern void TimerCheck(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void TimerCancel(
+#if NeedFunctionPrototypes
+ OsTimerPtr /* pTimer */
+#endif
+);
+
+extern void TimerFree(
+#if NeedFunctionPrototypes
+ OsTimerPtr /* pTimer */
+#endif
+);
+
+extern SIGVAL AutoResetServer(
+#if NeedFunctionPrototypes
+ int /*sig*/
+#endif
+);
+
+extern SIGVAL GiveUp(
+#if NeedFunctionPrototypes
+ int /*sig*/
+#endif
+);
+
+extern void UseMsg(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void ProcessCommandLine(
+#if NeedFunctionPrototypes
+ int /*argc*/,
+ char* /*argv*/[]
+#endif
+);
+
+extern unsigned long *Xalloc(
+#if NeedFunctionPrototypes
+ unsigned long /*amount*/
+#endif
+);
+
+extern unsigned long *XNFalloc(
+#if NeedFunctionPrototypes
+ unsigned long /*amount*/
+#endif
+);
+
+extern unsigned long *Xcalloc(
+#if NeedFunctionPrototypes
+ unsigned long /*amount*/
+#endif
+);
+
+extern unsigned long *Xrealloc(
+#if NeedFunctionPrototypes
+ pointer /*ptr*/,
+ unsigned long /*amount*/
+#endif
+);
+
+extern unsigned long *XNFrealloc(
+#if NeedFunctionPrototypes
+ pointer /*ptr*/,
+ unsigned long /*amount*/
+#endif
+);
+
+extern void Xfree(
+#if NeedFunctionPrototypes
+ pointer /*ptr*/
+#endif
+);
+
+extern int OsInitAllocator(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+typedef SIGVAL (*OsSigHandlerPtr)(
+#if NeedFunctionPrototypes
+ int /* sig */
+#endif
+);
+
+extern OsSigHandlerPtr OsSignal(
+#if NeedFunctionPrototypes
+ int /* sig */,
+ OsSigHandlerPtr /* handler */
+#endif
+);
+
+extern int auditTrailLevel;
+
+extern void AuditF(
+#if NeedVarargsPrototypes
+ char* /*f*/,
+ ...
+#endif
+);
+
+extern void FatalError(
+#if NeedVarargsPrototypes
+ char* /*f*/,
+ ...
+#endif
+);
+
+extern void ErrorF(
+#if NeedVarargsPrototypes
+ char* /*f*/,
+ ...
+#endif
+);
+
+extern int OsLookupColor(
+#if NeedFunctionPrototypes
+ int /*screen*/,
+ char * /*name*/,
+ unsigned /*len*/,
+ unsigned short * /*pred*/,
+ unsigned short * /*pgreen*/,
+ unsigned short * /*pblue*/
+#endif
+);
+
+extern void OsInit(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void OsVendorInit(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern int OsInitColors(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern int AddHost(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/,
+ int /*family*/,
+ unsigned /*length*/,
+ pointer /*pAddr*/
+#endif
+);
+
+extern Bool ForEachHostInFamily (
+#if NeedFunctionPrototypes
+ int /*family*/,
+ Bool (* /*func*/ )(),
+ pointer /*closure*/
+#endif
+);
+
+extern int RemoveHost(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/,
+ int /*family*/,
+ unsigned /*length*/,
+ pointer /*pAddr*/
+#endif
+);
+
+extern int GetHosts(
+#if NeedFunctionPrototypes
+ pointer * /*data*/,
+ int * /*pnHosts*/,
+ int * /*pLen*/,
+ BOOL * /*pEnabled*/
+#endif
+);
+
+typedef struct sockaddr * sockaddrPtr;
+
+extern int InvalidHost(
+#if NeedFunctionPrototypes
+ sockaddrPtr /*saddr*/,
+ int /*len*/
+#endif
+);
+
+extern int LocalClient(
+#if NeedFunctionPrototypes
+ ClientPtr /* client */
+#endif
+);
+
+extern int ChangeAccessControl(
+#if NeedFunctionPrototypes
+ ClientPtr /*client*/,
+ int /*fEnabled*/
+#endif
+);
+
+extern int GetAccessControl(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+
+extern void AddLocalHosts(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void ResetHosts(
+#if NeedFunctionPrototypes
+ char *display
+#endif
+);
+
+extern void EnableLocalHost(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void DisableLocalHost(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void AccessUsingXdmcp(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void DefineSelf(
+#if NeedFunctionPrototypes
+ int /*fd*/
+#endif
+);
+
+extern void AugmentSelf(
+#if NeedFunctionPrototypes
+ pointer /*from*/,
+ int /*len*/
+#endif
+);
+
+extern void InitAuthorization(
+#if NeedFunctionPrototypes
+ char * /*filename*/
+#endif
+);
+
+extern int LoadAuthorization(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern void RegisterAuthorizations(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern XID CheckAuthorization(
+#if NeedFunctionPrototypes
+ unsigned int /*namelength*/,
+ char * /*name*/,
+ unsigned int /*datalength*/,
+ char * /*data*/,
+ ClientPtr /*client*/,
+ char ** /*reason*/
+#endif
+);
+
+extern void ResetAuthorization(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+
+extern int AddAuthorization(
+#if NeedFunctionPrototypes
+ unsigned int /*name_length*/,
+ char * /*name*/,
+ unsigned int /*data_length*/,
+ char * /*data*/
+#endif
+);
+
+extern XID GenerateAuthorization(
+#if NeedFunctionPrototypes
+ unsigned int /* name_length */,
+ char * /* name */,
+ unsigned int /* data_length */,
+ char * /* data */,
+ unsigned int * /* data_length_return */,
+ char ** /* data_return */
+#endif
+);
+
+#ifdef COMMANDLINE_CHALLENGED_OPERATING_SYSTEMS
+extern void ExpandCommandLine(
+#if NeedFunctionPrototypes
+ int * /*pargc*/,
+ char *** /*pargv*/
+#endif
+);
+#endif
+
+extern int ddxProcessArgument(
+#if NeedFunctionPrototypes
+ int /*argc*/,
+ char * /*argv*/ [],
+ int /*i*/
+#endif
+);
+
+/*
+ * idiom processing stuff
+ */
+
+xReqPtr PeekNextRequest(
+#if NeedFunctionPrototypes
+ xReqPtr req, ClientPtr client, Bool readmore
+#endif
+);
+
+void SkipRequests(
+#if NeedFunctionPrototypes
+ xReqPtr req, ClientPtr client, int numskipped
+#endif
+);
+
+/* int ReqLen(xReq *req, ClientPtr client)
+ * Given a pointer to a *complete* request, return its length in bytes.
+ * Note that if the request is a big request (as defined in the Big
+ * Requests extension), the macro lies by returning 4 less than the
+ * length that it actually occupies in the request buffer. This is so you
+ * can blindly compare the length with the various sz_<request> constants
+ * in Xproto.h without having to know/care about big requests.
+ */
+#define ReqLen(_pxReq, _client) \
+ ((_pxReq->length ? \
+ (_client->swapped ? lswaps(_pxReq->length) : _pxReq->length) \
+ : ((_client->swapped ? \
+ lswapl(((CARD32*)_pxReq)[1]) : ((CARD32*)_pxReq)[1])-1) \
+ ) << 2)
+
+/* otherReqTypePtr CastxReq(xReq *req, otherReqTypePtr)
+ * Cast the given request to one of type otherReqTypePtr to access
+ * fields beyond the length field.
+ */
+#define CastxReq(_pxReq, otherReqTypePtr) \
+ (_pxReq->length ? (otherReqTypePtr)_pxReq \
+ : (otherReqTypePtr)(((CARD32*)_pxReq)+1))
+
+/* stuff for SkippedRequestsCallback */
+extern CallbackListPtr SkippedRequestsCallback;
+typedef struct {
+ xReqPtr req;
+ ClientPtr client;
+ int numskipped;
+} SkippedRequestInfoRec;
+
+/* stuff for ReplyCallback */
+extern CallbackListPtr ReplyCallback;
+typedef struct {
+ ClientPtr client;
+ pointer replyData;
+ unsigned long dataLenBytes;
+ unsigned long bytesRemaining;
+ Bool startOfReply;
+} ReplyInfoRec;
+
+/* stuff for FlushCallback */
+extern CallbackListPtr FlushCallback;
+
+#endif /* OS_H */
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