os.h revision 806e81e9 
1/***********************************************************
2
3Copyright 1987, 1998  The Open Group
4
5Permission to use, copy, modify, distribute, and sell this software and its
6documentation for any purpose is hereby granted without fee, provided that
7the above copyright notice appear in all copies and that both that
8copyright notice and this permission notice appear in supporting
9documentation.
10
11The above copyright notice and this permission notice shall be included in
12all copies or substantial portions of the Software.
13
14THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
17OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
18AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20
21Except as contained in this notice, the name of The Open Group shall not be
22used in advertising or otherwise to promote the sale, use or other dealings
23in this Software without prior written authorization from The Open Group.
24
25Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
26
27                        All Rights Reserved
28
29Permission to use, copy, modify, and distribute this software and its
30documentation for any purpose and without fee is hereby granted,
31provided that the above copyright notice appear in all copies and that
32both that copyright notice and this permission notice appear in
33supporting documentation, and that the name of Digital not be
34used in advertising or publicity pertaining to distribution of the
35software without specific, written prior permission.
36
37DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
43SOFTWARE.
44
45******************************************************************/
46
47#ifndef OS_H
48#define OS_H
49
50#include "misc.h"
51#include <stdarg.h>
52#include <stdint.h>
53#include <string.h>
54#ifdef MONOTONIC_CLOCK
55#include <time.h>
56#endif
57#if defined(HAVE_LIBBSD) && defined(HAVE_REALLOCARRAY)
58#include <bsd/stdlib.h>       /* for reallocarray */
59#endif
60#if defined(HAVE_LIBBSD) && defined(HAVE_STRLCPY)
61#include <bsd/string.h>       /* for strlcpy, strlcat */
62#endif
63
64#define SCREEN_SAVER_ON   0
65#define SCREEN_SAVER_OFF  1
66#define SCREEN_SAVER_FORCER 2
67#define SCREEN_SAVER_CYCLE  3
68
69#ifndef MAX_REQUEST_SIZE
70#define MAX_REQUEST_SIZE 65535
71#endif
72#ifndef MAX_BIG_REQUEST_SIZE
73#define MAX_BIG_REQUEST_SIZE 4194303
74#endif
75
76typedef struct _FontPathRec *FontPathPtr;
77typedef struct _NewClientRec *NewClientPtr;
78
79#ifndef xnfalloc
80#define xnfalloc(size) XNFalloc((unsigned long)(size))
81#define xnfcalloc(_num, _size) XNFcallocarray((_num), (_size))
82#define xnfrealloc(ptr, size) XNFrealloc((void *)(ptr), (unsigned long)(size))
83
84#define xstrdup(s) Xstrdup(s)
85#define xnfstrdup(s) XNFstrdup(s)
86
87#define xallocarray(num, size) reallocarray(NULL, (num), (size))
88#define xnfallocarray(num, size) XNFreallocarray(NULL, (num), (size))
89#define xnfreallocarray(ptr, num, size) XNFreallocarray((ptr), (num), (size))
90#endif
91
92#include <stdio.h>
93#include <stdarg.h>
94#include <string.h>
95#include <strings.h>
96
97
98#ifdef DDXBEFORERESET
99extern void ddxBeforeReset(void);
100#endif
101
102#ifdef DDXOSVERRORF
103extern _X_EXPORT void (*OsVendorVErrorFProc) (const char *,
104                                              va_list args)
105_X_ATTRIBUTE_PRINTF(1, 0);
106#endif
107
108extern _X_EXPORT Bool WaitForSomething(Bool clients_are_ready);
109
110extern _X_EXPORT int ReadRequestFromClient(ClientPtr /*client */ );
111
112extern _X_EXPORT int ReadFdFromClient(ClientPtr client);
113
114extern _X_EXPORT int WriteFdToClient(ClientPtr client, int fd, Bool do_close);
115
116extern _X_EXPORT Bool InsertFakeRequest(ClientPtr /*client */ ,
117                                        char * /*data */ ,
118                                        int /*count */ );
119
120extern _X_EXPORT void ResetCurrentRequest(ClientPtr /*client */ );
121
122extern _X_EXPORT void FlushAllOutput(void);
123
124extern _X_EXPORT void FlushIfCriticalOutputPending(void);
125
126extern _X_EXPORT void SetCriticalOutputPending(void);
127
128extern _X_EXPORT int WriteToClient(ClientPtr /*who */ , int /*count */ ,
129                                   const void * /*buf */ );
130
131extern _X_EXPORT void ResetOsBuffers(void);
132
133extern _X_EXPORT void InitConnectionLimits(void);
134
135extern _X_EXPORT void NotifyParentProcess(void);
136
137extern _X_EXPORT void CreateWellKnownSockets(void);
138
139extern _X_EXPORT void ResetWellKnownSockets(void);
140
141extern _X_EXPORT void CloseWellKnownConnections(void);
142
143extern _X_EXPORT XID AuthorizationIDOfClient(ClientPtr /*client */ );
144
145extern _X_EXPORT const char *ClientAuthorized(ClientPtr /*client */ ,
146                                              unsigned int /*proto_n */ ,
147                                              char * /*auth_proto */ ,
148                                              unsigned int /*string_n */ ,
149                                              char * /*auth_string */ );
150
151extern _X_EXPORT void CloseDownConnection(ClientPtr /*client */ );
152
153typedef void (*NotifyFdProcPtr)(int fd, int ready, void *data);
154
155#define X_NOTIFY_NONE   0x0
156#define X_NOTIFY_READ   0x1
157#define X_NOTIFY_WRITE  0x2
158#define X_NOTIFY_ERROR  0x4     /* don't need to select for, always reported */
159
160extern _X_EXPORT Bool SetNotifyFd(int fd, NotifyFdProcPtr notify_fd, int mask, void *data);
161
162static inline void RemoveNotifyFd(int fd)
163{
164    (void) SetNotifyFd(fd, NULL, X_NOTIFY_NONE, NULL);
165}
166
167extern _X_EXPORT int OnlyListenToOneClient(ClientPtr /*client */ );
168
169extern _X_EXPORT void ListenToAllClients(void);
170
171extern _X_EXPORT void IgnoreClient(ClientPtr /*client */ );
172
173extern _X_EXPORT void AttendClient(ClientPtr /*client */ );
174
175extern _X_EXPORT void MakeClientGrabImpervious(ClientPtr /*client */ );
176
177extern _X_EXPORT void MakeClientGrabPervious(ClientPtr /*client */ );
178
179extern _X_EXPORT void ListenOnOpenFD(int /* fd */ , int /* noxauth */ );
180
181extern _X_EXPORT Bool AddClientOnOpenFD(int /* fd */ );
182
183#ifdef MONOTONIC_CLOCK
184extern void ForceClockId(clockid_t /* forced_clockid */);
185#endif
186
187extern _X_EXPORT CARD32 GetTimeInMillis(void);
188extern _X_EXPORT CARD64 GetTimeInMicros(void);
189
190extern _X_EXPORT void AdjustWaitForDelay(void *waitTime, int newdelay);
191
192typedef struct _OsTimerRec *OsTimerPtr;
193
194typedef CARD32 (*OsTimerCallback) (OsTimerPtr timer,
195                                   CARD32 time,
196                                   void *arg);
197
198extern _X_EXPORT void TimerInit(void);
199
200extern _X_EXPORT Bool TimerForce(OsTimerPtr /* timer */ );
201
202#define TimerAbsolute (1<<0)
203#define TimerForceOld (1<<1)
204
205extern _X_EXPORT OsTimerPtr TimerSet(OsTimerPtr timer,
206                                     int flags,
207                                     CARD32 millis,
208                                     OsTimerCallback func,
209                                     void *arg);
210
211extern _X_EXPORT void TimerCheck(void);
212extern _X_EXPORT void TimerCancel(OsTimerPtr /* pTimer */ );
213extern _X_EXPORT void TimerFree(OsTimerPtr /* pTimer */ );
214
215extern _X_EXPORT void SetScreenSaverTimer(void);
216extern _X_EXPORT void FreeScreenSaverTimer(void);
217
218extern _X_EXPORT void AutoResetServer(int /*sig */ );
219
220extern _X_EXPORT void GiveUp(int /*sig */ );
221
222extern _X_EXPORT void UseMsg(void);
223
224extern _X_EXPORT void ProcessCommandLine(int /*argc */ , char * /*argv */ []);
225
226extern _X_EXPORT int set_font_authorizations(char **authorizations,
227                                             int *authlen,
228                                             void *client);
229
230#if 0
231/*
232 * These causes all sorts of warnings->errors in the xsrc build.
233 */
234#ifdef __NetBSD__
235#undef _X_DEPRECATED
236#define _X_DEPRECATED
237#endif
238#endif
239
240/*
241 * This function malloc(3)s buffer, terminating the server if there is not
242 * enough memory.
243 */
244extern _X_EXPORT void *
245XNFalloc(unsigned long /*amount */ );
246
247/*
248 * This function calloc(3)s buffer, terminating the server if there is not
249 * enough memory.
250 */
251extern _X_EXPORT void *
252XNFcalloc(unsigned long /*amount */ ) _X_DEPRECATED;
253
254/*
255 * This function calloc(3)s buffer, terminating the server if there is not
256 * enough memory or the arguments overflow when multiplied
257 */
258extern _X_EXPORT void *
259XNFcallocarray(size_t nmemb, size_t size);
260
261/*
262 * This function realloc(3)s passed buffer, terminating the server if there is
263 * not enough memory.
264 */
265extern _X_EXPORT void *
266XNFrealloc(void * /*ptr */ , unsigned long /*amount */ );
267
268/*
269 * This function reallocarray(3)s passed buffer, terminating the server if
270 * there is not enough memory or the arguments overflow when multiplied.
271 */
272extern _X_EXPORT void *
273XNFreallocarray(void *ptr, size_t nmemb, size_t size);
274
275/*
276 * This function strdup(3)s passed string. The only difference from the library
277 * function that it is safe to pass NULL, as NULL will be returned.
278 */
279extern _X_EXPORT char *
280Xstrdup(const char *s);
281
282/*
283 * This function strdup(3)s passed string, terminating the server if there is
284 * not enough memory. If NULL is passed to this function, NULL is returned.
285 */
286extern _X_EXPORT char *
287XNFstrdup(const char *s);
288
289/* Include new X*asprintf API */
290#include "Xprintf.h"
291
292/* Older api deprecated in favor of the asprintf versions */
293extern _X_EXPORT char *
294Xprintf(const char *fmt, ...)
295_X_ATTRIBUTE_PRINTF(1, 2)
296    _X_DEPRECATED;
297extern _X_EXPORT char *
298Xvprintf(const char *fmt, va_list va)
299_X_ATTRIBUTE_PRINTF(1, 0)
300    _X_DEPRECATED;
301extern _X_EXPORT char *
302XNFprintf(const char *fmt, ...)
303_X_ATTRIBUTE_PRINTF(1, 2)
304    _X_DEPRECATED;
305extern _X_EXPORT char *
306XNFvprintf(const char *fmt, va_list va)
307_X_ATTRIBUTE_PRINTF(1, 0)
308    _X_DEPRECATED;
309
310typedef void (*OsSigHandlerPtr) (int /* sig */ );
311typedef int (*OsSigWrapperPtr) (int /* sig */ );
312
313extern _X_EXPORT OsSigHandlerPtr
314OsSignal(int /* sig */ , OsSigHandlerPtr /* handler */ );
315extern _X_EXPORT OsSigWrapperPtr
316OsRegisterSigWrapper(OsSigWrapperPtr newWrap);
317
318extern _X_EXPORT int auditTrailLevel;
319
320extern _X_EXPORT void
321LockServer(void);
322extern _X_EXPORT void
323UnlockServer(void);
324
325extern _X_EXPORT int
326OsLookupColor(int /*screen */ ,
327              char * /*name */ ,
328              unsigned /*len */ ,
329              unsigned short * /*pred */ ,
330              unsigned short * /*pgreen */ ,
331              unsigned short * /*pblue */ );
332
333extern _X_EXPORT void
334OsInit(void);
335
336extern _X_EXPORT void
337OsCleanup(Bool);
338
339extern _X_EXPORT void
340OsVendorFatalError(const char *f, va_list args)
341_X_ATTRIBUTE_PRINTF(1, 0);
342
343extern _X_EXPORT void
344OsVendorInit(void);
345
346extern _X_EXPORT void
347OsBlockSignals(void);
348
349extern _X_EXPORT void
350OsReleaseSignals(void);
351
352extern void
353OsResetSignals(void);
354
355extern _X_EXPORT void
356OsAbort(void)
357    _X_NORETURN;
358
359#if !defined(WIN32)
360extern _X_EXPORT int
361System(const char *);
362extern _X_EXPORT void *
363Popen(const char *, const char *);
364extern _X_EXPORT int
365Pclose(void *);
366extern _X_EXPORT void *
367Fopen(const char *, const char *);
368extern _X_EXPORT int
369Fclose(void *);
370#else
371
372extern const char *
373Win32TempDir(void);
374
375extern int
376System(const char *cmdline);
377
378#define Fopen(a,b) fopen(a,b)
379#define Fclose(a) fclose(a)
380#endif
381
382extern _X_EXPORT Bool
383PrivsElevated(void);
384
385extern _X_EXPORT void
386CheckUserParameters(int argc, char **argv, char **envp);
387extern _X_EXPORT void
388CheckUserAuthorization(void);
389
390extern _X_EXPORT int
391AddHost(ClientPtr /*client */ ,
392        int /*family */ ,
393        unsigned /*length */ ,
394        const void * /*pAddr */ );
395
396extern _X_EXPORT Bool
397ForEachHostInFamily(int family,
398                    Bool (*func)(
399                                           unsigned char *addr,
400                                           short len,
401                                           void *closure),
402                    void *closure);
403
404extern _X_EXPORT int
405RemoveHost(ClientPtr client,
406           int family,
407           unsigned length,
408           void *pAddr);
409
410extern _X_EXPORT int
411GetHosts(void ** /*data */ ,
412         int * /*pnHosts */ ,
413         int * /*pLen */ ,
414         BOOL * /*pEnabled */ );
415
416typedef struct sockaddr *sockaddrPtr;
417
418extern _X_EXPORT int
419InvalidHost(sockaddrPtr /*saddr */ , int /*len */ , ClientPtr client);
420
421#define LCC_UID_SET	(1 << 0)
422#define LCC_GID_SET	(1 << 1)
423#define LCC_PID_SET	(1 << 2)
424#define LCC_ZID_SET	(1 << 3)
425
426typedef struct {
427    int fieldsSet;              /* Bit mask of fields set */
428    int euid;                   /* Effective uid */
429    int egid;                   /* Primary effective group id */
430    int nSuppGids;              /* Number of supplementary group ids */
431    int *pSuppGids;             /* Array of supplementary group ids */
432    int pid;                    /* Process id */
433    int zoneid;                 /* Only set on Solaris 10 & later */
434} LocalClientCredRec;
435
436extern _X_EXPORT int
437GetLocalClientCreds(ClientPtr, LocalClientCredRec **);
438
439extern _X_EXPORT void
440FreeLocalClientCreds(LocalClientCredRec *);
441
442extern _X_EXPORT int
443ChangeAccessControl(ClientPtr /*client */ , int /*fEnabled */ );
444
445extern _X_EXPORT int
446GetClientFd(ClientPtr);
447
448extern _X_EXPORT Bool
449ClientIsLocal(ClientPtr client);
450
451extern _X_EXPORT int
452GetAccessControl(void);
453
454extern _X_EXPORT void
455AddLocalHosts(void);
456
457extern _X_EXPORT void
458ResetHosts(const char *display);
459
460extern _X_EXPORT void
461EnableLocalAccess(void);
462
463extern _X_EXPORT void
464DisableLocalAccess(void);
465
466extern _X_EXPORT void
467EnableLocalHost(void);
468
469extern _X_EXPORT void
470DisableLocalHost(void);
471
472#ifndef NO_LOCAL_CLIENT_CRED
473extern _X_EXPORT void
474EnableLocalUser(void);
475
476extern _X_EXPORT void
477DisableLocalUser(void);
478
479extern _X_EXPORT void
480LocalAccessScopeUser(void);
481#endif
482
483extern _X_EXPORT void
484AccessUsingXdmcp(void);
485
486extern _X_EXPORT void
487DefineSelf(int /*fd */ );
488
489#ifdef XDMCP
490extern _X_EXPORT void
491AugmentSelf(void *from, int len);
492
493extern _X_EXPORT void
494RegisterAuthorizations(void);
495#endif
496
497extern _X_EXPORT void
498InitAuthorization(const char * /*filename */ );
499
500/* extern int LoadAuthorization(void); */
501
502extern _X_EXPORT int
503AuthorizationFromID(XID id,
504                    unsigned short *name_lenp,
505                    const char **namep,
506                    unsigned short *data_lenp, char **datap);
507
508extern _X_EXPORT XID
509CheckAuthorization(unsigned int /*namelength */ ,
510                   const char * /*name */ ,
511                   unsigned int /*datalength */ ,
512                   const char * /*data */ ,
513                   ClientPtr /*client */ ,
514                   const char **        /*reason */
515    );
516
517extern _X_EXPORT void
518ResetAuthorization(void);
519
520extern _X_EXPORT int
521RemoveAuthorization(unsigned short name_length,
522                    const char *name,
523                    unsigned short data_length, const char *data);
524
525extern _X_EXPORT int
526AddAuthorization(unsigned int /*name_length */ ,
527                 const char * /*name */ ,
528                 unsigned int /*data_length */ ,
529                 char * /*data */ );
530
531#ifdef XCSECURITY
532extern _X_EXPORT XID
533GenerateAuthorization(unsigned int /* name_length */ ,
534                      const char * /* name */ ,
535                      unsigned int /* data_length */ ,
536                      const char * /* data */ ,
537                      unsigned int * /* data_length_return */ ,
538                      char ** /* data_return */ );
539#endif
540
541extern _X_EXPORT int
542ddxProcessArgument(int /*argc */ , char * /*argv */ [], int /*i */ );
543
544extern _X_EXPORT void
545ddxUseMsg(void);
546
547/* stuff for ReplyCallback */
548extern _X_EXPORT CallbackListPtr ReplyCallback;
549typedef struct {
550    ClientPtr client;
551    const void *replyData;
552    unsigned long dataLenBytes; /* actual bytes from replyData + pad bytes */
553    unsigned long bytesRemaining;
554    Bool startOfReply;
555    unsigned long padBytes;     /* pad bytes from zeroed array */
556} ReplyInfoRec;
557
558/* stuff for FlushCallback */
559extern _X_EXPORT CallbackListPtr FlushCallback;
560
561enum ExitCode {
562    EXIT_NO_ERROR = 0,
563    EXIT_ERR_ABORT = 1,
564    EXIT_ERR_CONFIGURE = 2,
565    EXIT_ERR_DRIVERS = 3,
566};
567
568extern _X_EXPORT void
569AbortDDX(enum ExitCode error);
570extern _X_EXPORT void
571ddxGiveUp(enum ExitCode error);
572extern _X_EXPORT void
573ddxInputThreadInit(void);
574extern _X_EXPORT int
575TimeSinceLastInputEvent(void);
576
577/* Function fallbacks provided by AC_REPLACE_FUNCS in configure.ac */
578
579#ifndef HAVE_REALLOCARRAY
580#define reallocarray xreallocarray
581extern _X_EXPORT void *
582reallocarray(void *optr, size_t nmemb, size_t size);
583#endif
584
585#ifndef HAVE_STRCASECMP
586#define strcasecmp xstrcasecmp
587extern _X_EXPORT int
588xstrcasecmp(const char *s1, const char *s2);
589#endif
590
591#ifndef HAVE_STRNCASECMP
592#define strncasecmp xstrncasecmp
593extern _X_EXPORT int
594xstrncasecmp(const char *s1, const char *s2, size_t n);
595#endif
596
597#ifndef HAVE_STRCASESTR
598#define strcasestr xstrcasestr
599extern _X_EXPORT char *
600xstrcasestr(const char *s, const char *find);
601#endif
602
603#ifndef HAVE_STRLCPY
604extern _X_EXPORT size_t
605strlcpy(char *dst, const char *src, size_t siz);
606extern _X_EXPORT size_t
607strlcat(char *dst, const char *src, size_t siz);
608#endif
609
610#ifndef HAVE_STRNDUP
611extern _X_EXPORT char *
612strndup(const char *str, size_t n);
613#endif
614
615#ifndef HAVE_TIMINGSAFE_MEMCMP
616extern _X_EXPORT int
617timingsafe_memcmp(const void *b1, const void *b2, size_t len);
618#endif
619
620/* Logging. */
621typedef enum _LogParameter {
622    XLOG_FLUSH,
623    XLOG_SYNC,
624    XLOG_VERBOSITY,
625    XLOG_FILE_VERBOSITY
626} LogParameter;
627
628/* Flags for log messages. */
629typedef enum {
630    X_PROBED,                   /* Value was probed */
631    X_CONFIG,                   /* Value was given in the config file */
632    X_DEFAULT,                  /* Value is a default */
633    X_CMDLINE,                  /* Value was given on the command line */
634    X_NOTICE,                   /* Notice */
635    X_ERROR,                    /* Error message */
636    X_WARNING,                  /* Warning message */
637    X_INFO,                     /* Informational message */
638    X_NONE,                     /* No prefix */
639    X_NOT_IMPLEMENTED,          /* Not implemented */
640    X_DEBUG,                    /* Debug message */
641    X_UNKNOWN = -1              /* unknown -- this must always be last */
642} MessageType;
643
644extern _X_EXPORT const char *
645LogInit(const char *fname, const char *backup);
646extern void
647LogSetDisplay(void);
648extern _X_EXPORT void
649LogClose(enum ExitCode error);
650extern _X_EXPORT Bool
651LogSetParameter(LogParameter param, int value);
652extern _X_EXPORT void
653LogVWrite(int verb, const char *f, va_list args)
654_X_ATTRIBUTE_PRINTF(2, 0);
655extern _X_EXPORT void
656LogWrite(int verb, const char *f, ...)
657_X_ATTRIBUTE_PRINTF(2, 3);
658extern _X_EXPORT void
659LogVMessageVerb(MessageType type, int verb, const char *format, va_list args)
660_X_ATTRIBUTE_PRINTF(3, 0);
661extern _X_EXPORT void
662LogMessageVerb(MessageType type, int verb, const char *format, ...)
663_X_ATTRIBUTE_PRINTF(3, 4);
664extern _X_EXPORT void
665LogMessage(MessageType type, const char *format, ...)
666_X_ATTRIBUTE_PRINTF(2, 3);
667extern _X_EXPORT void
668LogMessageVerbSigSafe(MessageType type, int verb, const char *format, ...)
669_X_ATTRIBUTE_PRINTF(3, 4);
670extern _X_EXPORT void
671LogVMessageVerbSigSafe(MessageType type, int verb, const char *format, va_list args)
672_X_ATTRIBUTE_PRINTF(3, 0);
673
674extern _X_EXPORT void
675LogVHdrMessageVerb(MessageType type, int verb,
676                   const char *msg_format, va_list msg_args,
677                   const char *hdr_format, va_list hdr_args)
678_X_ATTRIBUTE_PRINTF(3, 0)
679_X_ATTRIBUTE_PRINTF(5, 0);
680extern _X_EXPORT void
681LogHdrMessageVerb(MessageType type, int verb,
682                  const char *msg_format, va_list msg_args,
683                  const char *hdr_format, ...)
684_X_ATTRIBUTE_PRINTF(3, 0)
685_X_ATTRIBUTE_PRINTF(5, 6);
686extern _X_EXPORT void
687LogHdrMessage(MessageType type, const char *msg_format,
688              va_list msg_args, const char *hdr_format, ...)
689_X_ATTRIBUTE_PRINTF(2, 0)
690_X_ATTRIBUTE_PRINTF(4, 5);
691
692extern _X_EXPORT void
693FreeAuditTimer(void);
694extern _X_EXPORT void
695AuditF(const char *f, ...)
696_X_ATTRIBUTE_PRINTF(1, 2);
697extern _X_EXPORT void
698VAuditF(const char *f, va_list args)
699_X_ATTRIBUTE_PRINTF(1, 0);
700extern _X_EXPORT void
701FatalError(const char *f, ...)
702_X_ATTRIBUTE_PRINTF(1, 2)
703    _X_NORETURN;
704
705#ifdef DEBUG
706#define DebugF ErrorF
707#else
708#define DebugF(...)             /* */
709#endif
710
711extern _X_EXPORT void
712VErrorF(const char *f, va_list args)
713_X_ATTRIBUTE_PRINTF(1, 0);
714extern _X_EXPORT void
715ErrorF(const char *f, ...)
716_X_ATTRIBUTE_PRINTF(1, 2);
717extern _X_EXPORT void
718VErrorFSigSafe(const char *f, va_list args)
719_X_ATTRIBUTE_PRINTF(1, 0);
720extern _X_EXPORT void
721ErrorFSigSafe(const char *f, ...)
722_X_ATTRIBUTE_PRINTF(1, 2);
723extern _X_EXPORT void
724LogPrintMarkers(void);
725
726extern _X_EXPORT void
727xorg_backtrace(void);
728
729extern _X_EXPORT int
730os_move_fd(int fd);
731
732#include <signal.h>
733
734extern _X_EXPORT int
735xthread_sigmask(int how, const sigset_t *set, sigset_t *oldest);
736
737#endif                          /* OS_H */
738