tclwinfcmd.c

这是leon3处理器的交叉编译链

    struct _EXCEPTION_RECORD *ExceptionRecord,
    void *EstablisherFrame,
    struct _CONTEXT *ContextRecord,
    void *DispatcherContext)
{
    __asm__ __volatile__ (
            "jmp dorenamefile_reentry");
    /* Nuke compiler warning about unused static function */
    _except_dorenamefile_handler(NULL, NULL, NULL, NULL);
    return 0; /* Function does not return */
}
#endif /* HAVE_NO_SEH */

/*
 *---------------------------------------------------------------------------
 *
 * TclpObjCopyFile, DoCopyFile --
 *
 *      Copy a single file (not a directory).  If dst already exists and
 *	is not a directory, it is removed.
 *
 * Results:
 *	If the file was successfully copied, returns TCL_OK.  Otherwise
 *	the return value is TCL_ERROR and errno is set to indicate the
 *	error.  Some possible values for errno are:
 *
 *	EACCES:     src or dst parent directory can't be read and/or written.
 *	EISDIR:	    src or dst is a directory.
 *	ENOENT:	    src doesn't exist.  src or dst is "".
 *
 *	EACCES:     exists an open file already referring to dst (95).
 *	EACCES:	    src specifies a char device (nul:, com1:, etc.) (NT)
 *	ENOENT:	    src specifies a char device (nul:, com1:, etc.) (95)
 *
 * Side effects:
 *	It is not an error to copy to a char device.
 *
 *---------------------------------------------------------------------------
 */

int 
TclpObjCopyFile(srcPathPtr, destPathPtr)
    Tcl_Obj *srcPathPtr;
    Tcl_Obj *destPathPtr;
{
    return DoCopyFile(Tcl_FSGetNativePath(srcPathPtr),
		      Tcl_FSGetNativePath(destPathPtr));
}

static int
DoCopyFile(
   CONST TCHAR *nativeSrc,	/* Pathname of file to be copied (native). */
   CONST TCHAR *nativeDst)	/* Pathname of file to copy to (native). */
{
    int retval = -1;

    /*
     * The CopyFile API acts differently under Win95/98 and NT
     * WRT NULL and "". Avoid passing these values.
     */

    if (nativeSrc == NULL || nativeSrc[0] == '\0' ||
        nativeDst == NULL || nativeDst[0] == '\0') {
	Tcl_SetErrno(ENOENT);
	return TCL_ERROR;
    }
    
    /*
     * The CopyFile API would throw an exception under NT if one
     * of the arguments is a char block device.
     */

#ifdef HAVE_NO_SEH
# ifdef TCL_MEM_DEBUG
    __asm__ __volatile__ (
            "movl %%esp,  %0" "\n\t"
            "movl %%ebp,  %1" "\n\t"
            "movl %%fs:0, %2" "\n\t"
            : "=m"(INITIAL_ESP),
              "=m"(INITIAL_EBP),
              "=r"(INITIAL_HANDLER) );
# endif /* TCL_MEM_DEBUG */

    __asm__ __volatile__ (
            "pushl %ebp" "\n\t"
            "pushl $__except_docopyfile_handler" "\n\t"
            "pushl %fs:0" "\n\t"
            "movl  %esp, %fs:0");
#else
    __try {
#endif /* HAVE_NO_SEH */
	if ((*tclWinProcs->copyFileProc)(nativeSrc, nativeDst, 0) != FALSE) {
	    retval = TCL_OK;
	}
#ifdef HAVE_NO_SEH
    __asm__ __volatile__ (
            "jmp  docopyfile_pop" "\n"
        "docopyfile_reentry:" "\n\t"
            "movl %%fs:0, %%eax" "\n\t"
            "movl 0x8(%%eax), %%esp" "\n\t"
            "movl 0x8(%%esp), %%ebp" "\n"
        "docopyfile_pop:" "\n\t"
            "movl (%%esp), %%eax" "\n\t"
            "movl %%eax, %%fs:0" "\n\t"
            "add  $12, %%esp" "\n\t"
            :
            :
            : "%eax");

# ifdef TCL_MEM_DEBUG
    __asm__ __volatile__ (
            "movl  %%esp,  %0" "\n\t"
            "movl  %%ebp,  %1" "\n\t"
            "movl  %%fs:0, %2" "\n\t"
            : "=m"(RESTORED_ESP),
              "=m"(RESTORED_EBP),
              "=r"(RESTORED_HANDLER) );

    if (INITIAL_ESP != RESTORED_ESP)
        panic("ESP restored incorrectly");
    if (INITIAL_EBP != RESTORED_EBP)
        panic("EBP restored incorrectly");
    if (INITIAL_HANDLER != RESTORED_HANDLER)
        panic("HANDLER restored incorrectly");
# endif /* TCL_MEM_DEBUG */
#else
    } __except (EXCEPTION_EXECUTE_HANDLER) {}
#endif /* HAVE_NO_SEH */

    /*
     * Avoid using control flow statements in the SEH guarded block!
     */
    if (retval != -1)
        return retval;

    TclWinConvertError(GetLastError());
    if (Tcl_GetErrno() == EBADF) {
	Tcl_SetErrno(EACCES);
	return TCL_ERROR;
    }
    if (Tcl_GetErrno() == EACCES) {
	DWORD srcAttr, dstAttr;

	srcAttr = (*tclWinProcs->getFileAttributesProc)(nativeSrc);
	dstAttr = (*tclWinProcs->getFileAttributesProc)(nativeDst);
	if (srcAttr != 0xffffffff) {
	    if (dstAttr == 0xffffffff) {
		dstAttr = 0;
	    }
	    if ((srcAttr & FILE_ATTRIBUTE_DIRECTORY) ||
		    (dstAttr & FILE_ATTRIBUTE_DIRECTORY)) {
		if (srcAttr & FILE_ATTRIBUTE_REPARSE_POINT) {
		    /* Source is a symbolic link -- copy it */
		    if (TclWinSymLinkCopyDirectory(nativeSrc, nativeDst) == 0) {
		        return TCL_OK;
		    }
		}
		Tcl_SetErrno(EISDIR);
	    }
	    if (dstAttr & FILE_ATTRIBUTE_READONLY) {
		(*tclWinProcs->setFileAttributesProc)(nativeDst, 
			dstAttr & ~((DWORD)FILE_ATTRIBUTE_READONLY));
		if ((*tclWinProcs->copyFileProc)(nativeSrc, nativeDst, 0) != FALSE) {
		    return TCL_OK;
		}
		/*
		 * Still can't copy onto dst.  Return that error, and
		 * restore attributes of dst.
		 */

		TclWinConvertError(GetLastError());
		(*tclWinProcs->setFileAttributesProc)(nativeDst, dstAttr);
	    }
	}
    }
    return TCL_ERROR;
}
#ifdef HAVE_NO_SEH
static
__attribute__ ((cdecl)) __attribute__ ((used))
EXCEPTION_DISPOSITION
_except_docopyfile_handler(
    struct _EXCEPTION_RECORD *ExceptionRecord,
    void *EstablisherFrame,
    struct _CONTEXT *ContextRecord,
    void *DispatcherContext)
{
    __asm__ __volatile__ (
            "jmp docopyfile_reentry");
    _except_docopyfile_handler(NULL,NULL,NULL,NULL);
    return 0; /* Function does not return */
}
#endif /* HAVE_NO_SEH */

/*
 *---------------------------------------------------------------------------
 *
 * TclpObjDeleteFile, TclpDeleteFile --
 *
 *      Removes a single file (not a directory).
 *
 * Results:
 *	If the file was successfully deleted, returns TCL_OK.  Otherwise
 *	the return value is TCL_ERROR and errno is set to indicate the
 *	error.  Some possible values for errno are:
 *
 *	EACCES:     a parent directory can't be read and/or written.
 *	EISDIR:	    path is a directory.
 *	ENOENT:	    path doesn't exist or is "".
 *
 *	EACCES:     exists an open file already referring to path.
 *	EACCES:	    path is a char device (nul:, com1:, etc.)
 *
 * Side effects:
 *      The file is deleted, even if it is read-only.
 *
 *---------------------------------------------------------------------------
 */

int 
TclpObjDeleteFile(pathPtr)
    Tcl_Obj *pathPtr;
{
    return TclpDeleteFile(Tcl_FSGetNativePath(pathPtr));
}

int
TclpDeleteFile(
    CONST TCHAR *nativePath)	/* Pathname of file to be removed (native). */
{
    DWORD attr;

    /*
     * The DeleteFile API acts differently under Win95/98 and NT
     * WRT NULL and "". Avoid passing these values.
     */

    if (nativePath == NULL || nativePath[0] == '\0') {
	Tcl_SetErrno(ENOENT);
	return TCL_ERROR;
    }

    if ((*tclWinProcs->deleteFileProc)(nativePath) != FALSE) {
	return TCL_OK;
    }
    TclWinConvertError(GetLastError());

    if (Tcl_GetErrno() == EACCES) {
        attr = (*tclWinProcs->getFileAttributesProc)(nativePath);
	if (attr != 0xffffffff) {
	    if (attr & FILE_ATTRIBUTE_DIRECTORY) {
		if (attr & FILE_ATTRIBUTE_REPARSE_POINT) {
		    /* It is a symbolic link -- remove it */
		    if (TclWinSymLinkDelete(nativePath, 0) == 0) {
		        return TCL_OK;
		    }
		}
		
		/* 
		 * If we fall through here, it is a directory.
		 * 
		 * Windows NT reports removing a directory as EACCES instead
		 * of EISDIR.
		 */

		Tcl_SetErrno(EISDIR);
	    } else if (attr & FILE_ATTRIBUTE_READONLY) {
		int res = (*tclWinProcs->setFileAttributesProc)(nativePath, 
			attr & ~((DWORD)FILE_ATTRIBUTE_READONLY));
		if ((res != 0) && ((*tclWinProcs->deleteFileProc)(nativePath)
			!= FALSE)) {
		    return TCL_OK;
		}
		TclWinConvertError(GetLastError());
		if (res != 0) {
		    (*tclWinProcs->setFileAttributesProc)(nativePath, attr);
		}
	    }
	}
    } else if (Tcl_GetErrno() == ENOENT) {
        attr = (*tclWinProcs->getFileAttributesProc)(nativePath);
	if (attr != 0xffffffff) {
	    if (attr & FILE_ATTRIBUTE_DIRECTORY) {
	    	/*
		 * Windows 95 reports removing a directory as ENOENT instead 
		 * of EISDIR. 
		 */

		Tcl_SetErrno(EISDIR);
	    }
	}
    } else if (Tcl_GetErrno() == EINVAL) {
	/*
	 * Windows NT reports removing a char device as EINVAL instead of
	 * EACCES.
	 */

	Tcl_SetErrno(EACCES);
    }

    return TCL_ERROR;
}

/*
 *---------------------------------------------------------------------------
 *
 * TclpObjCreateDirectory --
 *
 *      Creates the specified directory.  All parent directories of the
 *	specified directory must already exist.  The directory is
 *	automatically created with permissions so that user can access
 *	the new directory and create new files or subdirectories in it.
 *
 * Results:
 *	If the directory was successfully created, returns TCL_OK.
 *	Otherwise the return value is TCL_ERROR and errno is set to
 *	indicate the error.  Some possible values for errno are:
 *
 *	EACCES:     a parent directory can't be read and/or written.
 *	EEXIST:	    path already exists.
 *	ENOENT:	    a parent directory doesn't exist.
 *
 * Side effects:
 *      A directory is created.
 *
 *---------------------------------------------------------------------------
 */

int 
TclpObjCreateDirectory(pathPtr)
    Tcl_Obj *pathPtr;
{
    return DoCreateDirectory(Tcl_FSGetNativePath(pathPtr));
}

static int
DoCreateDirectory(
    CONST TCHAR *nativePath)	/* Pathname of directory to create (native). */
{
    DWORD error;
    if ((*tclWinProcs->createDirectoryProc)(nativePath, NULL) == 0) {
	error = GetLastError();
	TclWinConvertError(error);
	return TCL_ERROR;
    }   
    return TCL_OK;
}

/*
 *---------------------------------------------------------------------------
 *
 * TclpObjCopyDirectory --
 *
 *      Recursively copies a directory.  The target directory dst must
 *	not already exist.  Note that this function does not merge two
 *	directory hierarchies, even if the target directory is an an
 *	empty directory.
 *
 * Results:
 *	If the directory was successfully copied, returns TCL_OK.
 *	Otherwise the return value is TCL_ERROR, errno is set to indicate
 *	the error, and the pathname of the file that caused the error
 *	is stored in errorPtr.  See TclpCreateDirectory and TclpCopyFile
 *	for a description of possible values for errno.
 *
 * Side effects:
 *      An exact copy of the directory hierarchy src will be created
 *	with the name dst.  If an error occurs, the error will
 *      be returned immediately, and remaining files will not be
 *	processed.
 *
 *---------------------------------------------------------------------------
 */

int 
TclpObjCopyDirectory(srcPathPtr, destPathPtr, errorPtr)
    Tcl_Obj *srcPathPtr;
    Tcl_Obj *destPathPtr;
    Tcl_Obj **errorPtr;
{
    Tcl_DString ds;
    Tcl_DString srcString, dstString;
    int ret;

    Tcl_WinUtfToTChar(Tcl_FSGetTranslatedStringPath(NULL,srcPathPtr), 
		      -1, &srcString);
    Tcl_WinUtfToTChar(Tcl_FSGetTranslatedStringPath(NULL,destPathPtr), 
		      -1, &dstString);

    ret = TraverseWinTree(TraversalCopy, &srcString, &dstString, &ds);

    Tcl_DStringFree(&srcString);
    Tcl_DStringFree(&dstString);

    if (ret != TCL_OK) {
	*errorPtr = Tcl_NewStringObj(Tcl_DStringValue(&ds), -1);
	Tcl_DStringFree(&ds);
	Tcl_IncrRefCount(*errorPtr);
    }
    return ret;
}

/*
 *----------------------------------------------------------------------
 *
 * TclpObjRemoveDirectory, DoRemoveDirectory -- 
 *
 *	Removes directory (and its contents, if the recursive flag is set).
 *
 * Results:
 *	If the directory was successfully removed, returns TCL_OK.
 *	Otherwise the return value is TCL_ERROR, errno is set to indicate
 *	the error, and the pathname of the file that caused the error
 *	is stored in errorPtr.  Some possible values for errno are:
 *
 *	EACCES:     path directory can't be read and/or written.
 *	EEXIST:	    path is a non-empty directory.
 *	EINVAL:	    path is root directory or current directory.
 *	ENOENT:	    path doesn't exist or is "".
 * 	ENOTDIR:    path is not a directory.
 *
 *	EACCES:	    path is a char device (nul:, com1:, etc.) (95)
 *	EINVAL:	    path is a char device (nul:, com1:, etc.) (NT)
 *
 * Side effects:
 *	Directory removed.  If an error occurs, the error will be returned
 *	immediately, and remaining files will not be deleted.
 *
 *----------------------------------------------------------------------
 */

int 
TclpObjRemoveDirectory(pathPtr, recursive, errorPtr)
    Tcl_Obj *pathPtr;
    int recursive;
    Tcl_Obj **errorPtr;
{
    Tcl_DString ds;
    int ret;
    if (recursive) {
	/* 
	 * In the recursive case, the string rep is used to construct a
	 * Tcl_DString which may be used extensively, so we can't
	 * optimize this case easily.
	 */
	Tcl_DString native;
	Tcl_WinUtfToTChar(Tcl_FSGetTranslatedStringPath(NULL, pathPtr), 
			  -1, &native);
	ret = DoRemoveDirectory(&native, recursive, &ds);
	Tcl_DStringFree(&native);
    } else {
	ret = DoRemoveJustDirectory(Tcl_FSGetNativePath(pathPtr), 
				    0, &ds);
    }
    if (ret != TCL_OK) {
	int len = Tcl_DStringLength(&ds);
	if (len > 0) {
	    *errorPtr = Tcl_NewStringObj(Tcl_DStringValue(&ds), -1);
	    Tcl_IncrRefCount(*errorPtr);
	}
	Tcl_DStringFree(&ds);
    }
    return ret;
}

static int
DoRemoveJustDirectory(
    CONST TCHAR *nativePath,	/* Pathname of directory to be removed
				 * (native). */
    int ignoreError,		/* If non-zero, don't initialize the
                  		 * errorPtr under some circumstances
                  		 * on return. */
    Tcl_DString *errorPtr)	/* If non-NULL, uninitialized or free
				 * DString filled with UTF-8 name of file