tclUnixPort.h
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:18k
- /*
- * tclUnixPort.h --
- *
- * This header file handles porting issues that occur because
- * of differences between systems. It reads in UNIX-related
- * header files and sets up UNIX-related macros for Tcl's UNIX
- * core. It should be the only file that contains #ifdefs to
- * handle different flavors of UNIX. This file sets up the
- * union of all UNIX-related things needed by any of the Tcl
- * core files. This file depends on configuration #defines such
- * as NO_DIRENT_H that are set up by the "configure" script.
- *
- * Much of the material in this file was originally contributed
- * by Karl Lehenbauer, Mark Diekhans and Peter da Silva.
- *
- * Copyright (c) 1991-1994 The Regents of the University of California.
- * Copyright (c) 1994-1997 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tclUnixPort.h,v 1.27.2.19 2007/08/07 05:04:48 das Exp $
- */
- #ifndef _TCLUNIXPORT
- #define _TCLUNIXPORT
- #ifndef _TCLINT
- # include "tclInt.h"
- #endif
- /*
- *---------------------------------------------------------------------------
- * The following sets of #includes and #ifdefs are required to get Tcl to
- * compile under the various flavors of unix.
- *---------------------------------------------------------------------------
- */
- #include <errno.h>
- #include <fcntl.h>
- #ifdef HAVE_NET_ERRNO_H
- # include <net/errno.h>
- #endif
- #include <pwd.h>
- #include <signal.h>
- #ifdef HAVE_SYS_PARAM_H
- # include <sys/param.h>
- #endif
- #include <sys/types.h>
- #ifdef USE_DIRENT2_H
- # include "../compat/dirent2.h"
- #else
- #ifdef NO_DIRENT_H
- # include "../compat/dirent.h"
- #else
- # include <dirent.h>
- #endif
- #endif
- #ifdef HAVE_STRUCT_DIRENT64
- typedef struct dirent64 Tcl_DirEntry;
- # define TclOSreaddir readdir64
- #else
- typedef struct dirent Tcl_DirEntry;
- # define TclOSreaddir readdir
- #endif
- #ifdef HAVE_TYPE_OFF64_T
- typedef off64_t Tcl_SeekOffset;
- # define TclOSseek lseek64
- # define TclOSopen open64
- #else
- typedef off_t Tcl_SeekOffset;
- # define TclOSseek lseek
- # define TclOSopen open
- #endif
- #ifdef HAVE_STRUCT_STAT64
- # define TclOSstat stat64
- # define TclOSlstat lstat64
- #else
- # define TclOSstat stat
- # define TclOSlstat lstat
- #endif
- #if !HAVE_STRTOLL && defined(TCL_WIDE_INT_TYPE) && !TCL_WIDE_INT_IS_LONG
- EXTERN Tcl_WideInt strtoll _ANSI_ARGS_((CONST char *string,
- char **endPtr, int base));
- EXTERN Tcl_WideUInt strtoull _ANSI_ARGS_((CONST char *string,
- char **endPtr, int base));
- #endif
- #include <sys/file.h>
- #ifdef HAVE_SYS_SELECT_H
- # include <sys/select.h>
- #endif
- #include <sys/stat.h>
- #ifdef __CYGWIN__
- # define timezone _timezone
- typedef long TIMEZONE_t;
- #else /* !__CYGWIN__ */
- typedef int TIMEZONE_t;
- #endif /* !__CYGWIN__ */
- #if TIME_WITH_SYS_TIME
- # include <sys/time.h>
- # include <time.h>
- #else
- #if HAVE_SYS_TIME_H
- # include <sys/time.h>
- #else
- # include <time.h>
- #endif
- #endif
- #ifndef NO_SYS_WAIT_H
- # include <sys/wait.h>
- #endif
- #ifdef HAVE_UNISTD_H
- # include <unistd.h>
- #else
- # include "../compat/unistd.h"
- #endif
- #ifdef USE_FIONBIO
- /*
- * Not using the Posix fcntl(...,O_NONBLOCK,...) interface, instead
- * we are using ioctl(..,FIONBIO,..).
- */
- # ifdef HAVE_SYS_FILIO_H
- # include <sys/filio.h> /* For FIONBIO. */
- # endif
- # ifdef HAVE_SYS_IOCTL_H
- # include <sys/ioctl.h> /* For FIONBIO. */
- # endif
- #endif /* USE_FIONBIO */
- #include <utime.h>
- /*
- * Socket support stuff: This likely needs more work to parameterize for
- * each system.
- */
- #include <sys/socket.h> /* struct sockaddr, SOCK_STREAM, ... */
- #ifndef NO_UNAME
- # include <sys/utsname.h> /* uname system call. */
- #endif
- #include <netinet/in.h> /* struct in_addr, struct sockaddr_in */
- #include <arpa/inet.h> /* inet_ntoa() */
- #include <netdb.h> /* gethostbyname() */
- /*
- * Some platforms (e.g. SunOS) don't define FLT_MAX and FLT_MIN, so we
- * look for an alternative definition. If no other alternative is available
- * we use a reasonable guess.
- */
- #ifndef NO_FLOAT_H
- # include <float.h>
- #else
- #ifndef NO_VALUES_H
- # include <values.h>
- #endif
- #endif
- #ifndef FLT_MAX
- # ifdef MAXFLOAT
- # define FLT_MAX MAXFLOAT
- # else
- # define FLT_MAX 3.402823466E+38F
- # endif
- #endif
- #ifndef FLT_MIN
- # ifdef MINFLOAT
- # define FLT_MIN MINFLOAT
- # else
- # define FLT_MIN 1.175494351E-38F
- # endif
- #endif
- /*
- * NeXT doesn't define O_NONBLOCK, so #define it here if necessary.
- */
- #ifndef O_NONBLOCK
- # define O_NONBLOCK 0x80
- #endif
- /*
- * HPUX needs the flag O_NONBLOCK to get the right non-blocking I/O
- * semantics, while most other systems need O_NDELAY. Define the
- * constant NBIO_FLAG to be one of these
- */
- #ifdef HPUX
- # define NBIO_FLAG O_NONBLOCK
- #else
- # define NBIO_FLAG O_NDELAY
- #endif
- /*
- * The type of the status returned by wait varies from UNIX system
- * to UNIX system. The macro below defines it:
- */
- #ifdef _AIX
- # define WAIT_STATUS_TYPE pid_t
- #else
- #ifndef NO_UNION_WAIT
- # define WAIT_STATUS_TYPE union wait
- #else
- # define WAIT_STATUS_TYPE int
- #endif
- #endif
- /*
- * Supply definitions for macros to query wait status, if not already
- * defined in header files above.
- */
- #ifndef WIFEXITED
- # define WIFEXITED(stat) (((*((int *) &(stat))) & 0xff) == 0)
- #endif
- #ifndef WEXITSTATUS
- # define WEXITSTATUS(stat) (((*((int *) &(stat))) >> 8) & 0xff)
- #endif
- #ifndef WIFSIGNALED
- # define WIFSIGNALED(stat) (((*((int *) &(stat)))) && ((*((int *) &(stat))) == ((*((int *) &(stat))) & 0x00ff)))
- #endif
- #ifndef WTERMSIG
- # define WTERMSIG(stat) ((*((int *) &(stat))) & 0x7f)
- #endif
- #ifndef WIFSTOPPED
- # define WIFSTOPPED(stat) (((*((int *) &(stat))) & 0xff) == 0177)
- #endif
- #ifndef WSTOPSIG
- # define WSTOPSIG(stat) (((*((int *) &(stat))) >> 8) & 0xff)
- #endif
- /*
- * Define constants for waitpid() system call if they aren't defined
- * by a system header file.
- */
- #ifndef WNOHANG
- # define WNOHANG 1
- #endif
- #ifndef WUNTRACED
- # define WUNTRACED 2
- #endif
- /*
- * Supply macros for seek offsets, if they're not already provided by
- * an include file.
- */
- #ifndef SEEK_SET
- # define SEEK_SET 0
- #endif
- #ifndef SEEK_CUR
- # define SEEK_CUR 1
- #endif
- #ifndef SEEK_END
- # define SEEK_END 2
- #endif
- /*
- * The stuff below is needed by the "time" command. If this system has no
- * gettimeofday call, then must use times and the CLK_TCK #define (from
- * sys/param.h) to compute elapsed time. Unfortunately, some systems only
- * have HZ and no CLK_TCK, and some might not even have HZ.
- */
- #ifdef NO_GETTOD
- # include <sys/times.h>
- # include <sys/param.h>
- # ifndef CLK_TCK
- # ifdef HZ
- # define CLK_TCK HZ
- # else
- # define CLK_TCK 60
- # endif
- # endif
- #else
- # ifdef HAVE_BSDGETTIMEOFDAY
- # define gettimeofday BSDgettimeofday
- # endif
- #endif
- #ifdef GETTOD_NOT_DECLARED
- EXTERN int gettimeofday _ANSI_ARGS_((struct timeval *tp,
- struct timezone *tzp));
- #endif
- /*
- * Define access mode constants if they aren't already defined.
- */
- #ifndef F_OK
- # define F_OK 00
- #endif
- #ifndef X_OK
- # define X_OK 01
- #endif
- #ifndef W_OK
- # define W_OK 02
- #endif
- #ifndef R_OK
- # define R_OK 04
- #endif
- /*
- * Define FD_CLOEEXEC (the close-on-exec flag bit) if it isn't
- * already defined.
- */
- #ifndef FD_CLOEXEC
- # define FD_CLOEXEC 1
- #endif
- /*
- * On systems without symbolic links (i.e. S_IFLNK isn't defined)
- * define "lstat" to use "stat" instead.
- */
- #ifndef S_IFLNK
- # undef TclOSlstat
- # define lstat stat
- # define lstat64 stat64
- # define TclOSlstat TclOSstat
- #endif
- /*
- * Define macros to query file type bits, if they're not already
- * defined.
- */
- #ifndef S_ISREG
- # ifdef S_IFREG
- # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
- # else
- # define S_ISREG(m) 0
- # endif
- #endif /* !S_ISREG */
- #ifndef S_ISDIR
- # ifdef S_IFDIR
- # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
- # else
- # define S_ISDIR(m) 0
- # endif
- #endif /* !S_ISDIR */
- #ifndef S_ISCHR
- # ifdef S_IFCHR
- # define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
- # else
- # define S_ISCHR(m) 0
- # endif
- #endif /* !S_ISCHR */
- #ifndef S_ISBLK
- # ifdef S_IFBLK
- # define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
- # else
- # define S_ISBLK(m) 0
- # endif
- #endif /* !S_ISBLK */
- #ifndef S_ISFIFO
- # ifdef S_IFIFO
- # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
- # else
- # define S_ISFIFO(m) 0
- # endif
- #endif /* !S_ISFIFO */
- #ifndef S_ISLNK
- # ifdef S_IFLNK
- # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
- # else
- # define S_ISLNK(m) 0
- # endif
- #endif /* !S_ISLNK */
- #ifndef S_ISSOCK
- # ifdef S_IFSOCK
- # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
- # else
- # define S_ISSOCK(m) 0
- # endif
- #endif /* !S_ISSOCK */
- /*
- * Make sure that MAXPATHLEN and MAXNAMLEN are defined.
- */
- #ifndef MAXPATHLEN
- # ifdef PATH_MAX
- # define MAXPATHLEN PATH_MAX
- # else
- # define MAXPATHLEN 2048
- # endif
- #endif
- #ifndef MAXNAMLEN
- # ifdef NAME_MAX
- # define MAXNAMLEN NAME_MAX
- # else
- # define MAXNAMLEN 255
- # endif
- #endif
- /*
- * Make sure that L_tmpnam is defined.
- */
- #ifndef L_tmpnam
- # define L_tmpnam 100
- #endif
- /*
- * The following macro defines the type of the mask arguments to
- * select:
- */
- #ifndef NO_FD_SET
- # define SELECT_MASK fd_set
- #else /* NO_FD_SET */
- # ifndef _AIX
- typedef long fd_mask;
- # endif /* !AIX */
- # if defined(_IBMR2)
- # define SELECT_MASK void
- # else /* !defined(_IBMR2) */
- # define SELECT_MASK int
- # endif /* defined(_IBMR2) */
- #endif /* !NO_FD_SET */
- /*
- * Define "NBBY" (number of bits per byte) if it's not already defined.
- */
- #ifndef NBBY
- # define NBBY 8
- #endif
- /*
- * The following macro defines the number of fd_masks in an fd_set:
- */
- #ifndef FD_SETSIZE
- # ifdef OPEN_MAX
- # define FD_SETSIZE OPEN_MAX
- # else
- # define FD_SETSIZE 256
- # endif
- #endif /* FD_SETSIZE */
- #if !defined(howmany)
- # define howmany(x, y) (((x)+((y)-1))/(y))
- #endif /* !defined(howmany) */
- #ifndef NFDBITS
- # define NFDBITS NBBY*sizeof(fd_mask)
- #endif /* NFDBITS */
- #define MASK_SIZE howmany(FD_SETSIZE, NFDBITS)
- /*
- * Not all systems declare the errno variable in errno.h. so this
- * file does it explicitly. The list of system error messages also
- * isn't generally declared in a header file anywhere.
- */
- #ifdef NO_ERRNO
- extern int errno;
- #endif
- /*
- * Not all systems declare all the errors that Tcl uses! Provide some
- * work-arounds...
- */
- #ifndef EOVERFLOW
- # ifdef EFBIG
- # define EOVERFLOW EFBIG
- # else /* !EFBIG */
- # define EOVERFLOW EINVAL
- # endif /* EFBIG */
- #endif /* EOVERFLOW */
- /*
- * Variables provided by the C library:
- */
- #if defined(__APPLE__) && defined(__DYNAMIC__)
- # include <crt_externs.h>
- # define environ (*_NSGetEnviron())
- # define USE_PUTENV 1
- #else
- # if defined(_sgi) || defined(__sgi)
- # define environ _environ
- # endif
- extern char **environ;
- #endif
- /*
- * At present (12/91) not all stdlib.h implementations declare strtod.
- * The declaration below is here to ensure that it's declared, so that
- * the compiler won't take the default approach of assuming it returns
- * an int. There's no ANSI prototype for it because there would end
- * up being too many conflicts with slightly-different prototypes.
- */
- extern double strtod();
- /*
- * There is no platform-specific panic routine for Unix in the Tcl internals.
- */
- #define TclpPanic ((Tcl_PanicProc *) NULL)
- /*
- * Darwin specifc configure overrides.
- */
- #ifdef __APPLE__
- /*
- * Support for fat compiles: configure runs only once for multiple architectures
- */
- # if defined(__LP64__) && defined (NO_COREFOUNDATION_64)
- # undef HAVE_COREFOUNDATION
- # endif /* __LP64__ && NO_COREFOUNDATION_64 */
- # include <sys/cdefs.h>
- # ifdef __DARWIN_UNIX03
- # if __DARWIN_UNIX03
- # undef HAVE_PUTENV_THAT_COPIES
- # else
- # define HAVE_PUTENV_THAT_COPIES 1
- # endif
- # endif /* __DARWIN_UNIX03 */
- /*
- * The termios configure test program relies on the configure script being run
- * from a terminal, which is not the case e.g. when configuring from Xcode.
- * Since termios is known to be present on all Mac OS X releases since 10.0,
- * override the configure defines for serial API here. [Bug 497147]
- */
- # define USE_TERMIOS 1
- # undef USE_TERMIO
- # undef USE_SGTTY
- /*
- * Include AvailabilityMacros.h here (when available) to ensure any symbolic
- * MAC_OS_X_VERSION_* constants passed on the command line are translated.
- */
- # ifdef HAVE_AVAILABILITYMACROS_H
- # include <AvailabilityMacros.h>
- # endif
- /*
- * Support for weak import.
- */
- # ifdef HAVE_WEAK_IMPORT
- # if !defined(HAVE_AVAILABILITYMACROS_H) || !defined(MAC_OS_X_VERSION_MIN_REQUIRED)
- # undef HAVE_WEAK_IMPORT
- # else
- # ifndef WEAK_IMPORT_ATTRIBUTE
- # define WEAK_IMPORT_ATTRIBUTE __attribute__((weak_import))
- # endif
- # endif
- # endif /* HAVE_WEAK_IMPORT */
- /*
- * Support for MAC_OS_X_VERSION_MAX_ALLOWED define from AvailabilityMacros.h:
- * only use API available in the indicated OS version or earlier.
- */
- # ifdef MAC_OS_X_VERSION_MAX_ALLOWED
- # if MAC_OS_X_VERSION_MAX_ALLOWED < 1050 && defined(__LP64__)
- # undef HAVE_COREFOUNDATION
- # endif
- # if MAC_OS_X_VERSION_MAX_ALLOWED < 1040
- # undef HAVE_OSSPINLOCKLOCK
- # undef HAVE_PTHREAD_ATFORK
- # undef HAVE_COPYFILE
- # endif
- # if MAC_OS_X_VERSION_MAX_ALLOWED < 1030
- # ifdef TCL_THREADS
- /* prior to 10.3, realpath is not threadsafe, c.f. bug 711232 */
- # define NO_REALPATH 1
- # endif
- # undef HAVE_LANGINFO
- # endif
- # endif /* MAC_OS_X_VERSION_MAX_ALLOWED */
- # if defined(HAVE_COREFOUNDATION) && defined(__LP64__) &&
- defined(HAVE_WEAK_IMPORT) && MAC_OS_X_VERSION_MIN_REQUIRED < 1050
- # warning "Weak import of 64-bit CoreFoundation is not supported, will not run on Mac OS X < 10.5."
- # endif
- /*
- * At present, using vfork() instead of fork() causes execve() to fail
- * intermittently on Darwin x86_64. rdar://4685553
- */
- # if defined(__x86_64__) && !defined(FIXED_RDAR_4685553)
- # undef USE_VFORK
- # endif /* __x86_64__ */
- #endif /* __APPLE__ */
- /*
- * Darwin 8 copyfile API.
- */
- #ifdef HAVE_COPYFILE
- #ifdef HAVE_COPYFILE_H
- #include <copyfile.h>
- #if defined(HAVE_WEAK_IMPORT) && MAC_OS_X_VERSION_MIN_REQUIRED < 1040
- /* Support for weakly importing copyfile. */
- #define WEAK_IMPORT_COPYFILE
- extern int copyfile(const char *from, const char *to, copyfile_state_t state,
- copyfile_flags_t flags) WEAK_IMPORT_ATTRIBUTE;
- #endif /* HAVE_WEAK_IMPORT */
- #else /* HAVE_COPYFILE_H */
- int copyfile(const char *from, const char *to, void *state, uint32_t flags);
- #define COPYFILE_ACL (1<<0)
- #define COPYFILE_XATTR (1<<2)
- #define COPYFILE_NOFOLLOW_SRC (1<<18)
- #if defined(HAVE_WEAK_IMPORT) && MAC_OS_X_VERSION_MIN_REQUIRED < 1040
- /* Support for weakly importing copyfile. */
- #define WEAK_IMPORT_COPYFILE
- extern int copyfile(const char *from, const char *to, void *state,
- uint32_t flags) WEAK_IMPORT_ATTRIBUTE;
- #endif /* HAVE_WEAK_IMPORT */
- #endif /* HAVE_COPYFILE_H */
- #endif /* HAVE_COPYFILE */
- /*
- *---------------------------------------------------------------------------
- * The following macros and declarations represent the interface between
- * generic and unix-specific parts of Tcl. Some of the macros may override
- * functions declared in tclInt.h.
- *---------------------------------------------------------------------------
- */
- /*
- * The default platform eol translation on Unix is TCL_TRANSLATE_LF.
- */
- #ifdef DJGPP
- #define TCL_PLATFORM_TRANSLATION TCL_TRANSLATE_CRLF
- #else
- #define TCL_PLATFORM_TRANSLATION TCL_TRANSLATE_LF
- #endif
- /*
- * The following macros have trivial definitions, allowing generic code to
- * address platform-specific issues.
- */
- #define TclpGetPid(pid) ((unsigned long) (pid))
- #define TclpReleaseFile(file) /* Nothing. */
- /*
- * The following defines wrap the system memory allocation routines for
- * use by tclAlloc.c. By default off unused on Unix.
- */
- #if USE_TCLALLOC
- # define TclpSysAlloc(size, isBin) malloc((size_t)size)
- # define TclpSysFree(ptr) free((char*)ptr)
- # define TclpSysRealloc(ptr, size) realloc((char*)ptr, (size_t)size)
- #endif
- /*
- * The following macros and declaration wrap the C runtime library
- * functions.
- */
- #define TclpExit exit
- /*
- * Platform specific mutex definition used by memory allocators.
- * These mutexes are statically allocated and explicitly initialized.
- * Most modules do not use this, but instead use Tcl_Mutex types and
- * Tcl_MutexLock and Tcl_MutexUnlock that are self-initializing.
- */
- #ifdef TCL_THREADS
- #include <pthread.h>
- typedef pthread_mutex_t TclpMutex;
- EXTERN void TclpMutexInit _ANSI_ARGS_((TclpMutex *mPtr));
- EXTERN void TclpMutexLock _ANSI_ARGS_((TclpMutex *mPtr));
- EXTERN void TclpMutexUnlock _ANSI_ARGS_((TclpMutex *mPtr));
- EXTERN Tcl_DirEntry * TclpReaddir(DIR *);
- #ifndef TclpLocaltime
- EXTERN struct tm * TclpLocaltime(TclpTime_t_CONST);
- #endif
- #ifndef TclpGmtime
- EXTERN struct tm * TclpGmtime(TclpTime_t_CONST);
- #endif
- EXTERN char * TclpInetNtoa(struct in_addr);
- #define inet_ntoa(x) TclpInetNtoa(x)
- #else
- typedef int TclpMutex;
- #define TclpMutexInit(a)
- #define TclpMutexLock(a)
- #define TclpMutexUnlock(a)
- #endif /* TCL_THREADS */
- /*
- * Set of MT-safe implementations of some
- * known-to-be-MT-unsafe library calls.
- * Instead of returning pointers to the
- * static storage, those return pointers
- * to the TSD data.
- */
- #include <pwd.h>
- #include <grp.h>
- EXTERN struct passwd* TclpGetPwNam(const char *name);
- EXTERN struct group* TclpGetGrNam(const char *name);
- EXTERN struct passwd* TclpGetPwUid(uid_t uid);
- EXTERN struct group* TclpGetGrGid(gid_t gid);
- EXTERN struct hostent* TclpGetHostByName(const char *name);
- EXTERN struct hostent* TclpGetHostByAddr(const char *addr, int length, int type);
- #include "tclPlatDecls.h"
- #include "tclIntPlatDecls.h"
- #endif /* _TCLUNIXPORT */