/*********************************************************** 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. ******************************************************************/ #ifndef OS_H #define OS_H #include "misc.h" #include #include #include #ifdef MONOTONIC_CLOCK #include #endif #if defined(HAVE_LIBBSD) && defined(HAVE_REALLOCARRAY) #include /* for reallocarray */ #endif #if defined(HAVE_LIBBSD) && defined(HAVE_STRLCPY) #include /* for strlcpy, strlcat */ #endif #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 struct _FontPathRec *FontPathPtr; typedef struct _NewClientRec *NewClientPtr; #ifndef xnfalloc #define xnfalloc(size) XNFalloc((unsigned long)(size)) #define xnfcalloc(_num, _size) XNFcallocarray((_num), (_size)) #define xnfrealloc(ptr, size) XNFrealloc((void *)(ptr), (unsigned long)(size)) #define xstrdup(s) Xstrdup(s) #define xnfstrdup(s) XNFstrdup(s) #define xallocarray(num, size) reallocarray(NULL, (num), (size)) #define xnfallocarray(num, size) XNFreallocarray(NULL, (num), (size)) #define xnfreallocarray(ptr, num, size) XNFreallocarray((ptr), (num), (size)) #endif #include #include #ifdef DDXBEFORERESET extern void ddxBeforeReset(void); #endif #ifdef DDXOSVERRORF extern _X_EXPORT void (*OsVendorVErrorFProc) (const char *, va_list args) _X_ATTRIBUTE_PRINTF(1, 0); #endif extern _X_EXPORT Bool WaitForSomething(Bool clients_are_ready); extern _X_EXPORT int ReadRequestFromClient(ClientPtr /*client */ ); extern _X_EXPORT int ReadFdFromClient(ClientPtr client); extern _X_EXPORT int WriteFdToClient(ClientPtr client, int fd, Bool do_close); extern _X_EXPORT Bool InsertFakeRequest(ClientPtr /*client */ , char * /*data */ , int /*count */ ); extern _X_EXPORT void ResetCurrentRequest(ClientPtr /*client */ ); extern _X_EXPORT void FlushAllOutput(void); extern _X_EXPORT void FlushIfCriticalOutputPending(void); extern _X_EXPORT void SetCriticalOutputPending(void); extern _X_EXPORT int WriteToClient(ClientPtr /*who */ , int /*count */ , const void * /*buf */ ); extern _X_EXPORT void ResetOsBuffers(void); extern _X_EXPORT void InitConnectionLimits(void); extern _X_EXPORT void NotifyParentProcess(void); extern _X_EXPORT void CreateWellKnownSockets(void); extern _X_EXPORT void ResetWellKnownSockets(void); extern _X_EXPORT void CloseWellKnownConnections(void); extern _X_EXPORT XID AuthorizationIDOfClient(ClientPtr /*client */ ); extern _X_EXPORT const char *ClientAuthorized(ClientPtr /*client */ , unsigned int /*proto_n */ , char * /*auth_proto */ , unsigned int /*string_n */ , char * /*auth_string */ ); extern _X_EXPORT void CloseDownConnection(ClientPtr /*client */ ); typedef void (*NotifyFdProcPtr)(int fd, int ready, void *data); #define X_NOTIFY_NONE 0x0 #define X_NOTIFY_READ 0x1 #define X_NOTIFY_WRITE 0x2 #define X_NOTIFY_ERROR 0x4 /* don't need to select for, always reported */ extern _X_EXPORT Bool SetNotifyFd(int fd, NotifyFdProcPtr notify_fd, int mask, void *data); static inline void RemoveNotifyFd(int fd) { (void) SetNotifyFd(fd, NULL, X_NOTIFY_NONE, NULL); } extern _X_EXPORT int OnlyListenToOneClient(ClientPtr /*client */ ); extern _X_EXPORT void ListenToAllClients(void); extern _X_EXPORT void IgnoreClient(ClientPtr /*client */ ); extern _X_EXPORT void AttendClient(ClientPtr /*client */ ); extern _X_EXPORT void MakeClientGrabImpervious(ClientPtr /*client */ ); extern _X_EXPORT void MakeClientGrabPervious(ClientPtr /*client */ ); extern _X_EXPORT void ListenOnOpenFD(int /* fd */ , int /* noxauth */ ); extern _X_EXPORT Bool AddClientOnOpenFD(int /* fd */ ); #ifdef MONOTONIC_CLOCK extern void ForceClockId(clockid_t /* forced_clockid */); #endif extern _X_EXPORT CARD32 GetTimeInMillis(void); extern _X_EXPORT CARD64 GetTimeInMicros(void); extern _X_EXPORT void AdjustWaitForDelay(void *waitTime, int newdelay); typedef struct _OsTimerRec *OsTimerPtr; typedef CARD32 (*OsTimerCallback) (OsTimerPtr timer, CARD32 time, void *arg); extern _X_EXPORT void TimerInit(void); extern _X_EXPORT Bool TimerForce(OsTimerPtr /* timer */ ); #define TimerAbsolute (1<<0) #define TimerForceOld (1<<1) extern _X_EXPORT OsTimerPtr TimerSet(OsTimerPtr timer, int flags, CARD32 millis, OsTimerCallback func, void *arg); extern _X_EXPORT void TimerCheck(void); extern _X_EXPORT void TimerCancel(OsTimerPtr /* pTimer */ ); extern _X_EXPORT void TimerFree(OsTimerPtr /* pTimer */ ); extern _X_EXPORT void SetScreenSaverTimer(void); extern _X_EXPORT void FreeScreenSaverTimer(void); extern _X_EXPORT void AutoResetServer(int /*sig */ ); extern _X_EXPORT void GiveUp(int /*sig */ ); extern _X_EXPORT void UseMsg(void); extern _X_EXPORT void ProcessCommandLine(int /*argc */ , char * /*argv */ []); extern _X_EXPORT int set_font_authorizations(char **authorizations, int *authlen, void *client); /* * This function malloc(3)s buffer, terminating the server if there is not * enough memory. */ extern _X_EXPORT void * XNFalloc(unsigned long /*amount */ ); /* * This function calloc(3)s buffer, terminating the server if there is not * enough memory. */ extern _X_EXPORT void * XNFcalloc(unsigned long /*amount */ ) _X_DEPRECATED; /* * This function calloc(3)s buffer, terminating the server if there is not * enough memory or the arguments overflow when multiplied */ extern _X_EXPORT void * XNFcallocarray(size_t nmemb, size_t size); /* * This function realloc(3)s passed buffer, terminating the server if there is * not enough memory. */ extern _X_EXPORT void * XNFrealloc(void * /*ptr */ , unsigned long /*amount */ ); /* * This function reallocarray(3)s passed buffer, terminating the server if * there is not enough memory or the arguments overflow when multiplied. */ extern _X_EXPORT void * XNFreallocarray(void *ptr, size_t nmemb, size_t size); /* * This function strdup(3)s passed string. The only difference from the library * function that it is safe to pass NULL, as NULL will be returned. */ extern _X_EXPORT char * Xstrdup(const char *s); /* * This function strdup(3)s passed string, terminating the server if there is * not enough memory. If NULL is passed to this function, NULL is returned. */ extern _X_EXPORT char * XNFstrdup(const char *s); /* Include new X*asprintf API */ #include "Xprintf.h" /* Older api deprecated in favor of the asprintf versions */ extern _X_EXPORT char * Xprintf(const char *fmt, ...) _X_ATTRIBUTE_PRINTF(1, 2) _X_DEPRECATED; extern _X_EXPORT char * Xvprintf(const char *fmt, va_list va) _X_ATTRIBUTE_PRINTF(1, 0) _X_DEPRECATED; extern _X_EXPORT char * XNFprintf(const char *fmt, ...) _X_ATTRIBUTE_PRINTF(1, 2) _X_DEPRECATED; extern _X_EXPORT char * XNFvprintf(const char *fmt, va_list va) _X_ATTRIBUTE_PRINTF(1, 0) _X_DEPRECATED; typedef void (*OsSigHandlerPtr) (int /* sig */ ); typedef int (*OsSigWrapperPtr) (int /* sig */ ); extern _X_EXPORT OsSigHandlerPtr OsSignal(int /* sig */ , OsSigHandlerPtr /* handler */ ); extern _X_EXPORT OsSigWrapperPtr OsRegisterSigWrapper(OsSigWrapperPtr newWrap); extern _X_EXPORT int auditTrailLevel; extern _X_EXPORT void LockServer(void); extern _X_EXPORT void UnlockServer(void); #ifdef X_PRIVSEP extern _X_EXPORT int ChownLock(uid_t, gid_t); extern _X_EXPORT int priv_open_device(const char *); extern _X_EXPORT void priv_vendor_init(void); #endif extern _X_EXPORT int OsLookupColor(int /*screen */ , char * /*name */ , unsigned /*len */ , unsigned short * /*pred */ , unsigned short * /*pgreen */ , unsigned short * /*pblue */ ); extern _X_EXPORT void OsInit(void); extern _X_EXPORT void OsCleanup(Bool); extern _X_EXPORT void OsVendorFatalError(const char *f, va_list args) _X_ATTRIBUTE_PRINTF(1, 0); extern _X_EXPORT void OsVendorInit(void); extern _X_EXPORT void OsBlockSignals(void); extern _X_EXPORT void OsReleaseSignals(void); extern void OsResetSignals(void); extern _X_EXPORT void OsAbort(void) _X_NORETURN; #if !defined(WIN32) extern _X_EXPORT int System(const char *); extern _X_EXPORT void * Popen(const char *, const char *); extern _X_EXPORT int Pclose(void *); extern _X_EXPORT void * Fopen(const char *, const char *); extern _X_EXPORT int Fclose(void *); #else extern const char * Win32TempDir(void); extern int System(const char *cmdline); #define Fopen(a,b) fopen(a,b) #define Fclose(a) fclose(a) #endif extern _X_EXPORT Bool PrivsElevated(void); extern _X_EXPORT void CheckUserParameters(int argc, char **argv, char **envp); extern _X_EXPORT void CheckUserAuthorization(void); extern _X_EXPORT int AddHost(ClientPtr /*client */ , int /*family */ , unsigned /*length */ , const void * /*pAddr */ ); extern _X_EXPORT Bool ForEachHostInFamily(int family, Bool (*func)( unsigned char *addr, short len, void *closure), void *closure); extern _X_EXPORT int RemoveHost(ClientPtr client, int family, unsigned length, void *pAddr); extern _X_EXPORT int GetHosts(void ** /*data */ , int * /*pnHosts */ , int * /*pLen */ , BOOL * /*pEnabled */ ); typedef struct sockaddr *sockaddrPtr; extern _X_EXPORT int InvalidHost(sockaddrPtr /*saddr */ , int /*len */ , ClientPtr client); #define LCC_UID_SET (1 << 0) #define LCC_GID_SET (1 << 1) #define LCC_PID_SET (1 << 2) #define LCC_ZID_SET (1 << 3) typedef struct { int fieldsSet; /* Bit mask of fields set */ int euid; /* Effective uid */ int egid; /* Primary effective group id */ int nSuppGids; /* Number of supplementary group ids */ int *pSuppGids; /* Array of supplementary group ids */ int pid; /* Process id */ int zoneid; /* Only set on Solaris 10 & later */ } LocalClientCredRec; extern _X_EXPORT int GetLocalClientCreds(ClientPtr, LocalClientCredRec **); extern _X_EXPORT void FreeLocalClientCreds(LocalClientCredRec *); extern _X_EXPORT int ChangeAccessControl(ClientPtr /*client */ , int /*fEnabled */ ); extern _X_EXPORT int GetClientFd(ClientPtr); extern _X_EXPORT Bool ClientIsLocal(ClientPtr client); extern _X_EXPORT int GetAccessControl(void); extern _X_EXPORT void AddLocalHosts(void); extern _X_EXPORT void ResetHosts(const char *display); extern _X_EXPORT void EnableLocalAccess(void); extern _X_EXPORT void DisableLocalAccess(void); extern _X_EXPORT void EnableLocalHost(void); extern _X_EXPORT void DisableLocalHost(void); #ifndef NO_LOCAL_CLIENT_CRED extern _X_EXPORT void EnableLocalUser(void); extern _X_EXPORT void DisableLocalUser(void); extern _X_EXPORT void LocalAccessScopeUser(void); #endif extern _X_EXPORT void AccessUsingXdmcp(void); extern _X_EXPORT void DefineSelf(int /*fd */ ); #ifdef XDMCP extern _X_EXPORT void AugmentSelf(void *from, int len); extern _X_EXPORT void RegisterAuthorizations(void); #endif extern _X_EXPORT void InitAuthorization(const char * /*filename */ ); /* extern int LoadAuthorization(void); */ extern _X_EXPORT int AuthorizationFromID(XID id, unsigned short *name_lenp, const char **namep, unsigned short *data_lenp, char **datap); extern _X_EXPORT XID CheckAuthorization(unsigned int /*namelength */ , const char * /*name */ , unsigned int /*datalength */ , const char * /*data */ , ClientPtr /*client */ , const char ** /*reason */ ); extern _X_EXPORT void ResetAuthorization(void); extern _X_EXPORT int RemoveAuthorization(unsigned short name_length, const char *name, unsigned short data_length, const char *data); extern _X_EXPORT int AddAuthorization(unsigned int /*name_length */ , const char * /*name */ , unsigned int /*data_length */ , char * /*data */ ); #ifdef XCSECURITY extern _X_EXPORT XID GenerateAuthorization(unsigned int /* name_length */ , const char * /* name */ , unsigned int /* data_length */ , const char * /* data */ , unsigned int * /* data_length_return */ , char ** /* data_return */ ); #endif extern _X_EXPORT int ddxProcessArgument(int /*argc */ , char * /*argv */ [], int /*i */ ); extern _X_EXPORT void ddxUseMsg(void); /* stuff for ReplyCallback */ extern _X_EXPORT CallbackListPtr ReplyCallback; typedef struct { ClientPtr client; const void *replyData; unsigned long dataLenBytes; /* actual bytes from replyData + pad bytes */ unsigned long bytesRemaining; Bool startOfReply; unsigned long padBytes; /* pad bytes from zeroed array */ } ReplyInfoRec; /* stuff for FlushCallback */ extern _X_EXPORT CallbackListPtr FlushCallback; enum ExitCode { EXIT_NO_ERROR = 0, EXIT_ERR_ABORT = 1, EXIT_ERR_CONFIGURE = 2, EXIT_ERR_DRIVERS = 3, }; extern _X_EXPORT void AbortDDX(enum ExitCode error); extern _X_EXPORT void ddxGiveUp(enum ExitCode error); extern _X_EXPORT void ddxInputThreadInit(void); extern _X_EXPORT int TimeSinceLastInputEvent(void); /* Function fallbacks provided by AC_REPLACE_FUNCS in configure.ac */ #ifndef HAVE_REALLOCARRAY #define reallocarray xreallocarray extern _X_EXPORT void * reallocarray(void *optr, size_t nmemb, size_t size); #endif #ifndef HAVE_STRCASECMP #define strcasecmp xstrcasecmp extern _X_EXPORT int xstrcasecmp(const char *s1, const char *s2); #endif #ifndef HAVE_STRNCASECMP #define strncasecmp xstrncasecmp extern _X_EXPORT int xstrncasecmp(const char *s1, const char *s2, size_t n); #endif #ifndef HAVE_STRCASESTR #define strcasestr xstrcasestr extern _X_EXPORT char * xstrcasestr(const char *s, const char *find); #endif #ifndef HAVE_STRLCPY extern _X_EXPORT size_t strlcpy(char *dst, const char *src, size_t siz); extern _X_EXPORT size_t strlcat(char *dst, const char *src, size_t siz); #endif #ifndef HAVE_STRNDUP extern _X_EXPORT char * strndup(const char *str, size_t n); #endif #ifndef HAVE_TIMINGSAFE_MEMCMP extern _X_EXPORT int timingsafe_memcmp(const void *b1, const void *b2, size_t len); #endif /* 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_DEBUG, /* Debug message */ X_UNKNOWN = -1 /* unknown -- this must always be last */ } MessageType; extern _X_EXPORT const char * LogInit(const char *fname, const char *backup); extern void LogSetDisplay(void); extern _X_EXPORT void LogClose(enum ExitCode error); extern _X_EXPORT Bool LogSetParameter(LogParameter param, int value); extern _X_EXPORT void LogVWrite(int verb, const char *f, va_list args) _X_ATTRIBUTE_PRINTF(2, 0); extern _X_EXPORT void LogWrite(int verb, const char *f, ...) _X_ATTRIBUTE_PRINTF(2, 3); extern _X_EXPORT void LogVMessageVerb(MessageType type, int verb, const char *format, va_list args) _X_ATTRIBUTE_PRINTF(3, 0); extern _X_EXPORT void LogMessageVerb(MessageType type, int verb, const char *format, ...) _X_ATTRIBUTE_PRINTF(3, 4); extern _X_EXPORT void LogMessage(MessageType type, const char *format, ...) _X_ATTRIBUTE_PRINTF(2, 3); extern _X_EXPORT void LogMessageVerbSigSafe(MessageType type, int verb, const char *format, ...) _X_ATTRIBUTE_PRINTF(3, 4); extern _X_EXPORT void LogVMessageVerbSigSafe(MessageType type, int verb, const char *format, va_list args) _X_ATTRIBUTE_PRINTF(3, 0); extern _X_EXPORT void LogVHdrMessageVerb(MessageType type, int verb, const char *msg_format, va_list msg_args, const char *hdr_format, va_list hdr_args) _X_ATTRIBUTE_PRINTF(3, 0) _X_ATTRIBUTE_PRINTF(5, 0); extern _X_EXPORT void LogHdrMessageVerb(MessageType type, int verb, const char *msg_format, va_list msg_args, const char *hdr_format, ...) _X_ATTRIBUTE_PRINTF(3, 0) _X_ATTRIBUTE_PRINTF(5, 6); extern _X_EXPORT void LogHdrMessage(MessageType type, const char *msg_format, va_list msg_args, const char *hdr_format, ...) _X_ATTRIBUTE_PRINTF(2, 0) _X_ATTRIBUTE_PRINTF(4, 5); extern _X_EXPORT void FreeAuditTimer(void); extern _X_EXPORT void AuditF(const char *f, ...) _X_ATTRIBUTE_PRINTF(1, 2); extern _X_EXPORT void VAuditF(const char *f, va_list args) _X_ATTRIBUTE_PRINTF(1, 0); extern _X_EXPORT void FatalError(const char *f, ...) _X_ATTRIBUTE_PRINTF(1, 2) _X_NORETURN; #ifdef DEBUG #define DebugF ErrorF #else #define DebugF(...) /* */ #endif extern _X_EXPORT void VErrorF(const char *f, va_list args) _X_ATTRIBUTE_PRINTF(1, 0); extern _X_EXPORT void ErrorF(const char *f, ...) _X_ATTRIBUTE_PRINTF(1, 2); extern _X_EXPORT void VErrorFSigSafe(const char *f, va_list args) _X_ATTRIBUTE_PRINTF(1, 0); extern _X_EXPORT void ErrorFSigSafe(const char *f, ...) _X_ATTRIBUTE_PRINTF(1, 2); extern _X_EXPORT void LogPrintMarkers(void); extern _X_EXPORT void xorg_backtrace(void); extern _X_EXPORT int os_move_fd(int fd); #include extern _X_EXPORT int xthread_sigmask(int how, const sigset_t *set, sigset_t *oldest); #endif /* OS_H */