Tcl Source Code

2012-03-27  Jan Nijtmans  <[email protected]>

	* generic/tcl.h:             [Bug 3508771] Wrong Tcl_StatBuf used on MinGW
	* generic/tclFCmd.c:         [Bug 2015723] duplicate inodes from file stat on
	* generic/tclCmdAH.c:        windows (but now for cygwin as well)
	* generic/tclOODefineCmds.c: minor gcc warning

2012-03-27  Donal K. Fellows  <[email protected]>

	IMPLEMENTATION OF TIP#397.

	* generic/tclOO.c (Tcl_CopyObjectInstance): [Bug 3474460]: Make the
	target object name optional when copying classes. [RFE 3485060]: Add
	callback method ("<cloned>") so that scripted control over copying is
	easier.

 * sprintf(...,"%" TCL_LL_MODIFIER "d",...).
 */

#if !defined(TCL_WIDE_INT_TYPE)&&!defined(TCL_WIDE_INT_IS_LONG)
#   if defined(__WIN32__)
#      define TCL_WIDE_INT_TYPE __int64
#      ifdef __BORLANDC__

#         define TCL_LL_MODIFIER	"L"
#      else /* __BORLANDC__ */







#         define TCL_LL_MODIFIER	"I64"
#      endif /* __BORLANDC__ */
#   elif defined(__GNUC__)
#      define TCL_WIDE_INT_TYPE long long
#      define TCL_LL_MODIFIER	"ll"





#   else /* ! __WIN32__ && ! __GNUC__ */
/*
 * Don't know what platform it is and configure hasn't discovered what is
 * going on for us. Try to guess...
 */
#      ifdef NO_LIMITS_H
#	  error please define either TCL_WIDE_INT_TYPE or TCL_WIDE_INT_IS_LONG

#   define TCL_WIDE_INT_TYPE	long
#endif /* TCL_WIDE_INT_IS_LONG */

typedef TCL_WIDE_INT_TYPE		Tcl_WideInt;
typedef unsigned TCL_WIDE_INT_TYPE	Tcl_WideUInt;

#ifdef TCL_WIDE_INT_IS_LONG

#   define Tcl_WideAsLong(val)		((long)(val))
#   define Tcl_LongAsWide(val)		((long)(val))
#   define Tcl_WideAsDouble(val)	((double)((long)(val)))
#   define Tcl_DoubleAsWide(val)	((long)((double)(val)))
#   ifndef TCL_LL_MODIFIER
#      define TCL_LL_MODIFIER		"l"
#   endif /* !TCL_LL_MODIFIER */
#else /* TCL_WIDE_INT_IS_LONG */
/*
 * The next short section of defines are only done when not running on Windows
 * or some other strange platform.
 */
#   ifndef TCL_LL_MODIFIER



















#      define TCL_LL_MODIFIER		"ll"
#   endif /* !TCL_LL_MODIFIER */
#   define Tcl_WideAsLong(val)		((long)((Tcl_WideInt)(val)))
#   define Tcl_LongAsWide(val)		((Tcl_WideInt)((long)(val)))
#   define Tcl_WideAsDouble(val)	((double)((Tcl_WideInt)(val)))
#   define Tcl_DoubleAsWide(val)	((Tcl_WideInt)((double)(val)))
#endif /* TCL_WIDE_INT_IS_LONG */

#if defined(__WIN32__)
#   ifdef __BORLANDC__
	typedef struct stati64 Tcl_StatBuf;
#   elif defined(_WIN64)
	typedef struct __stat64 Tcl_StatBuf;
#   elif (defined(_MSC_VER) && (_MSC_VER < 1400)) || defined(_USE_32BIT_TIME_T)
	typedef struct _stati64	Tcl_StatBuf;
#   else
	typedef struct _stat32i64 Tcl_StatBuf;
#   endif /* _MSC_VER < 1400 */
#elif defined(__CYGWIN__)
    typedef struct _stat32i64 {
	dev_t st_dev;
	unsigned short st_ino;
	unsigned short st_mode;
	short st_nlink;
	short st_uid;
	short st_gid;
	/* Here is a 2-byte gap */
	dev_t st_rdev;
	/* Here is a 4-byte gap */
	long long st_size;
	struct {long tv_sec;} st_atim;
	struct {long tv_sec;} st_mtim;
	struct {long tv_sec;} st_ctim;
	/* Here is a 4-byte gap */
    } Tcl_StatBuf;
#elif defined(HAVE_STRUCT_STAT64)
    typedef struct stat64 Tcl_StatBuf;
#else
    typedef struct stat Tcl_StatBuf;
#endif

/*
 *----------------------------------------------------------------------------
 * Data structures defined opaquely in this module. The definitions below just
 * provide dummy types. A few fields are made visible in Tcl_Interp
 * structures, namely those used for returning a string result from commands.
 * Direct access to the result field is discouraged in Tcl 8.0. The

	 * For Windows, there are no user ids associated with a file, so we
	 * always return 1.
	 *
	 * TODO: use GetSecurityInfo to get the real owner of the file and
	 * test for equivalence to the current user.
	 */

#if defined(__WIN32__) || defined(__CYGWIN__)
	value = 1;
#else
	value = (geteuid() == buf.st_uid);
#endif
    }
    Tcl_SetObjResult(interp, Tcl_NewBooleanObj(value));
    return TCL_OK;

	/*
	 * Prevent copying or renaming a file onto itself. On Windows since
	 * 8.5 we do get an inode number, however the unsigned short field is
	 * insufficient to accept the Win32 API file id so it is truncated to
	 * 16 bits and we get collisions. See bug #2015723.
	 */

#if !defined(WIN32) && !defined(__CYGWIN__)
	if ((sourceStatBuf.st_ino != 0) && (targetStatBuf.st_ino != 0)) {
	    if ((sourceStatBuf.st_ino == targetStatBuf.st_ino) &&
		    (sourceStatBuf.st_dev == targetStatBuf.st_dev)) {
		result = TCL_OK;
		goto done;
	    }
	}

    SLOT("define::filter",      ClassFilterGet, ClassFilterSet),
    SLOT("define::mixin",       ClassMixinGet,  ClassMixinSet),
    SLOT("define::superclass",  ClassSuperGet,  ClassSuperSet),
    SLOT("define::variable",    ClassVarsGet,   ClassVarsSet),
    SLOT("objdefine::filter",   ObjFilterGet,   ObjFilterSet),
    SLOT("objdefine::mixin",    ObjMixinGet,    ObjMixinSet),
    SLOT("objdefine::variable", ObjVarsGet,     ObjVarsSet),
    {NULL, {0, 0, 0, 0, 0}, {0, 0, 0, 0, 0}}
};

/*
 * ----------------------------------------------------------------------
 *
 * BumpGlobalEpoch --
 *	Utility that ensures that call chains that are invalid will get thrown