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+/* $XFree86: xc/programs/Xserver/include/os.h,v 3.54 2003/10/30 21:21:06 herrb Exp $ */
+/***********************************************************
+
+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 <X11/Xalloca.h>
+#ifndef IN_MODULE
+#include <stdarg.h>
+#else
+#include "xf86_ansic.h"
+#endif
+
+#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 4194303
+#endif
+
+typedef pointer FID;
+typedef struct _FontPathRec *FontPathPtr;
+typedef struct _NewClientRec *NewClientPtr;
+
+#ifndef xalloc
+#define xnfalloc(size) XNFalloc((unsigned long)(size))
+#define xnfcalloc(_num, _size) XNFcalloc((unsigned long)(_num)*(unsigned long)(_size))
+#define xnfrealloc(ptr, size) XNFrealloc((pointer)(ptr), (unsigned long)(size))
+
+#define xalloc(size) Xalloc((unsigned long)(size))
+#define xcalloc(_num, _size) Xcalloc((unsigned long)(_num)*(unsigned long)(_size))
+#define xrealloc(ptr, size) Xrealloc((pointer)(ptr), (unsigned long)(size))
+#define xfree(ptr) Xfree((pointer)(ptr))
+#define xstrdup(s) Xstrdup(s)
+#define xnfstrdup(s) XNFstrdup(s)
+#endif
+
+#ifndef IN_MODULE
+#ifdef __SCO__
+#include <stdio.h>
+#endif
+#include <string.h>
+#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 Bool OsDelayInitColors;
+extern void (*OsVendorVErrorFProc)(const char *, va_list args);
+
+extern int WaitForSomething(
+ int* /*pClientsReady*/
+);
+
+#ifdef LBX
+#define ReadRequestFromClient(client) ((client)->readRequest(client))
+extern int StandardReadRequestFromClient(ClientPtr /*client*/);
+
+extern int ClientConnectionNumber(ClientPtr /*client*/);
+#else
+extern int ReadRequestFromClient(ClientPtr /*client*/);
+#endif /* LBX */
+
+extern Bool InsertFakeRequest(
+ ClientPtr /*client*/,
+ char* /*data*/,
+ int /*count*/);
+
+extern void ResetCurrentRequest(ClientPtr /*client*/);
+
+extern void FlushAllOutput(void);
+
+extern void FlushIfCriticalOutputPending(void);
+
+extern void SetCriticalOutputPending(void);
+
+extern int WriteToClient(ClientPtr /*who*/, int /*count*/, char* /*buf*/);
+
+extern void ResetOsBuffers(void);
+
+extern void InitConnectionLimits(void);
+
+extern void CreateWellKnownSockets(void);
+
+extern void ResetWellKnownSockets(void);
+
+extern void CloseWellKnownConnections(void);
+
+extern XID AuthorizationIDOfClient(ClientPtr /*client*/);
+
+extern char *ClientAuthorized(
+ ClientPtr /*client*/,
+ unsigned int /*proto_n*/,
+ char* /*auth_proto*/,
+ unsigned int /*string_n*/,
+ char* /*auth_string*/);
+
+extern Bool EstablishNewConnections(
+ ClientPtr /*clientUnused*/,
+ pointer /*closure*/);
+
+extern void CheckConnections(void);
+
+extern void CloseDownConnection(ClientPtr /*client*/);
+
+extern void AddEnabledDevice(int /*fd*/);
+
+extern void RemoveEnabledDevice(int /*fd*/);
+
+extern void OnlyListenToOneClient(ClientPtr /*client*/);
+
+extern void ListenToAllClients(void);
+
+extern void IgnoreClient(ClientPtr /*client*/);
+
+extern void AttendClient(ClientPtr /*client*/);
+
+extern void MakeClientGrabImpervious(ClientPtr /*client*/);
+
+extern void MakeClientGrabPervious(ClientPtr /*client*/);
+
+#ifdef LBX
+extern void CloseDownFileDescriptor(ClientPtr /* client */);
+#endif
+
+extern void AvailableClientInput(ClientPtr /* client */);
+
+extern CARD32 GetTimeInMillis(void);
+
+extern void AdjustWaitForDelay(
+ pointer /*waitTime*/,
+ unsigned long /*newdelay*/);
+
+typedef struct _OsTimerRec *OsTimerPtr;
+
+typedef CARD32 (*OsTimerCallback)(
+ OsTimerPtr /* timer */,
+ CARD32 /* time */,
+ pointer /* arg */);
+
+extern void TimerInit(void);
+
+extern Bool TimerForce(OsTimerPtr /* timer */);
+
+#define TimerAbsolute (1<<0)
+#define TimerForceOld (1<<1)
+
+extern OsTimerPtr TimerSet(
+ OsTimerPtr /* timer */,
+ int /* flags */,
+ CARD32 /* millis */,
+ OsTimerCallback /* func */,
+ pointer /* arg */);
+
+extern void TimerCheck(void);
+extern void TimerCancel(OsTimerPtr /* pTimer */);
+extern void TimerFree(OsTimerPtr /* pTimer */);
+
+extern void SetScreenSaverTimer(void);
+extern void FreeScreenSaverTimer(void);
+
+#ifdef DPMSExtension
+extern void SetDPMSTimers(void);
+extern void FreeDPMSTimers(void);
+#endif
+
+extern SIGVAL AutoResetServer(int /*sig*/);
+
+extern SIGVAL GiveUp(int /*sig*/);
+
+extern void UseMsg(void);
+
+extern void InitGlobals(void);
+
+extern void ProcessCommandLine(int /*argc*/, char* /*argv*/[]);
+
+extern int set_font_authorizations(
+ char ** /* authorizations */,
+ int * /*authlen */,
+ pointer /* client */);
+
+#ifndef _HAVE_XALLOC_DECLS
+#define _HAVE_XALLOC_DECLS
+extern pointer Xalloc(unsigned long /*amount*/);
+extern pointer Xcalloc(unsigned long /*amount*/);
+extern pointer Xrealloc(pointer /*ptr*/, unsigned long /*amount*/);
+extern void Xfree(pointer /*ptr*/);
+#endif
+
+extern pointer XNFalloc(unsigned long /*amount*/);
+extern pointer XNFcalloc(unsigned long /*amount*/);
+extern pointer XNFrealloc(pointer /*ptr*/, unsigned long /*amount*/);
+
+extern void OsInitAllocator(void);
+
+extern char *Xstrdup(const char *s);
+extern char *XNFstrdup(const char *s);
+extern char *Xprintf(const char *fmt, ...);
+extern char *Xvprintf(const char *fmt, va_list va);
+extern char *XNFprintf(const char *fmt, ...);
+extern char *XNFvprintf(const char *fmt, va_list va);
+
+typedef SIGVAL (*OsSigHandlerPtr)(int /* sig */);
+
+extern OsSigHandlerPtr OsSignal(int /* sig */, OsSigHandlerPtr /* handler */);
+
+extern int auditTrailLevel;
+
+#ifdef SERVER_LOCK
+extern void LockServer(void);
+extern void UnlockServer(void);
+#endif
+
+extern int OsLookupColor(
+ int /*screen*/,
+ char * /*name*/,
+ unsigned /*len*/,
+ unsigned short * /*pred*/,
+ unsigned short * /*pgreen*/,
+ unsigned short * /*pblue*/);
+
+extern void OsInit(void);
+
+extern void OsCleanup(Bool);
+
+extern void OsVendorFatalError(void);
+
+extern void OsVendorInit(void);
+
+extern int OsInitColors(void);
+
+void OsBlockSignals (void);
+
+void OsReleaseSignals (void);
+
+#if !defined(WIN32) && !defined(__UNIXOS2__)
+extern int System(char *);
+extern pointer Popen(char *, char *);
+extern int Pclose(pointer);
+extern pointer Fopen(char *, char *);
+extern int Fclose(pointer);
+#else
+#define System(a) system(a)
+#define Popen(a,b) popen(a,b)
+#define Pclose(a) pclose(a)
+#define Fopen(a,b) fopen(a,b)
+#define Fclose(a) fclose(a)
+#endif
+
+extern void CheckUserParameters(int argc, char **argv, char **envp);
+extern void CheckUserAuthorization(void);
+
+extern int AddHost(
+ ClientPtr /*client*/,
+ int /*family*/,
+ unsigned /*length*/,
+ pointer /*pAddr*/);
+
+extern Bool ForEachHostInFamily (
+ int /*family*/,
+ Bool (* /*func*/ )(
+ unsigned char * /* addr */,
+ short /* len */,
+ pointer /* closure */),
+ pointer /*closure*/);
+
+extern int RemoveHost(
+ ClientPtr /*client*/,
+ int /*family*/,
+ unsigned /*length*/,
+ pointer /*pAddr*/);
+
+extern int GetHosts(
+ pointer * /*data*/,
+ int * /*pnHosts*/,
+ int * /*pLen*/,
+ BOOL * /*pEnabled*/);
+
+typedef struct sockaddr * sockaddrPtr;
+
+extern int InvalidHost(sockaddrPtr /*saddr*/, int /*len*/, ClientPtr client);
+
+extern int LocalClient(ClientPtr /* client */);
+
+extern int LocalClientCred(ClientPtr, int *, int *);
+
+extern int ChangeAccessControl(ClientPtr /*client*/, int /*fEnabled*/);
+
+extern int GetAccessControl(void);
+
+
+extern void AddLocalHosts(void);
+
+extern void ResetHosts(char *display);
+
+extern void EnableLocalHost(void);
+
+extern void DisableLocalHost(void);
+
+extern void AccessUsingXdmcp(void);
+
+extern void DefineSelf(int /*fd*/);
+
+extern void AugmentSelf(pointer /*from*/, int /*len*/);
+
+extern void InitAuthorization(char * /*filename*/);
+
+/* extern int LoadAuthorization(void); */
+
+extern void RegisterAuthorizations(void);
+
+extern XID AuthorizationToID (
+ unsigned short name_length,
+ char *name,
+ unsigned short data_length,
+ char *data);
+
+extern int AuthorizationFromID (
+ XID id,
+ unsigned short *name_lenp,
+ char **namep,
+ unsigned short *data_lenp,
+ char **datap);
+
+extern XID CheckAuthorization(
+ unsigned int /*namelength*/,
+ char * /*name*/,
+ unsigned int /*datalength*/,
+ char * /*data*/,
+ ClientPtr /*client*/,
+ char ** /*reason*/
+);
+
+extern void ResetAuthorization(void);
+
+extern int RemoveAuthorization (
+ unsigned short name_length,
+ char *name,
+ unsigned short data_length,
+ char *data);
+
+extern int AddAuthorization(
+ unsigned int /*name_length*/,
+ char * /*name*/,
+ unsigned int /*data_length*/,
+ char * /*data*/);
+
+extern XID GenerateAuthorization(
+ unsigned int /* name_length */,
+ char * /* name */,
+ unsigned int /* data_length */,
+ char * /* data */,
+ unsigned int * /* data_length_return */,
+ char ** /* data_return */);
+
+#ifdef COMMANDLINE_CHALLENGED_OPERATING_SYSTEMS
+extern void ExpandCommandLine(int * /*pargc*/, char *** /*pargv*/);
+#endif
+
+extern void ddxInitGlobals(void);
+
+extern int ddxProcessArgument(int /*argc*/, char * /*argv*/ [], int /*i*/);
+
+extern void ddxUseMsg(void);
+
+/*
+ * idiom processing stuff
+ */
+
+extern xReqPtr PeekNextRequest(xReqPtr req, ClientPtr client, Bool readmore);
+
+extern void SkipRequests(xReqPtr req, ClientPtr client, int numskipped);
+
+/* 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;
+
+extern void AbortDDX(void);
+extern void ddxGiveUp(void);
+extern int TimeSinceLastInputEvent(void);
+
+/* Logging. */
+typedef enum _LogParameter {
+ XLOG_FLUSH,
+ XLOG_SYNC,
+ XLOG_VERBOSITY,
+ XLOG_FILE_VERBOSITY
+} LogParameter;
+
+/* Flags for log messages. */
+typedef enum {
+ X_PROBED, /* Value was probed */
+ X_CONFIG, /* Value was given in the config file */
+ X_DEFAULT, /* Value is a default */
+ X_CMDLINE, /* Value was given on the command line */
+ X_NOTICE, /* Notice */
+ X_ERROR, /* Error message */
+ X_WARNING, /* Warning message */
+ X_INFO, /* Informational message */
+ X_NONE, /* No prefix */
+ X_NOT_IMPLEMENTED, /* Not implemented */
+ X_UNKNOWN = -1 /* unknown -- this must always be last */
+} MessageType;
+
+/* XXX Need to check which GCC versions have the format(printf) attribute. */
+#if defined(__GNUC__) && \
+ ((__GNUC__ > 2) || ((__GNUC__ == 2) && (__GNUC_MINOR__ > 4)))
+#define _printf_attribute(a,b) __attribute((format(__printf__,a,b)))
+#else
+#define _printf_attribute(a,b) /**/
+#endif
+
+extern const char *LogInit(const char *fname, const char *backup);
+extern void LogClose(void);
+extern Bool LogSetParameter(LogParameter param, int value);
+extern void LogVWrite(int verb, const char *f, va_list args);
+extern void LogWrite(int verb, const char *f, ...) _printf_attribute(2,3);
+extern void LogVMessageVerb(MessageType type, int verb, const char *format,
+ va_list args);
+extern void LogMessageVerb(MessageType type, int verb, const char *format,
+ ...) _printf_attribute(3,4);
+extern void LogMessage(MessageType type, const char *format, ...)
+ _printf_attribute(2,3);
+extern void FreeAuditTimer(void);
+extern void AuditF(const char *f, ...) _printf_attribute(1,2);
+extern void VAuditF(const char *f, va_list args);
+extern void FatalError(const char *f, ...) _printf_attribute(1,2)
+#if defined(__GNUC__) && \
+ ((__GNUC__ > 2) || ((__GNUC__ == 2) && (__GNUC_MINOR__ > 4)))
+__attribute((noreturn))
+#endif
+;
+
+extern void VErrorF(const char *f, va_list args);
+extern void ErrorF(const char *f, ...) _printf_attribute(1,2);
+extern void Error(char *str);
+extern void LogPrintMarkers(void);
+
+#if defined(NEED_SNPRINTF) && !defined(IN_MODULE)
+extern int snprintf(char *str, size_t size, const char *format, ...)
+ _printf_attribute(3,4);
+extern int vsnprintf(char *str, size_t size, const char *format, va_list ap);
+#endif
+
+#endif /* OS_H */