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Creating a Private Build of an In-box Driver

Creating a Private Build of an Inbox Driver

When you build a private version of the inbox driver, and Windows is configured to rank driver signatures equally, you must ensure that the private build outranks the Microsoft-signed version. The simplest way to ensure this is to update the value of the INF DriverVer directive in the driver package's INF file. The new value must specify a date and version that is later than the value of the DriverVer directive in the package's INF file that is installed on the target system.

You can automate the process for building a private version of an inbox driver that outranks the Microsoft-signed version by following these steps:

  1. Modify the makefile to generate a new INF file for the driver package. For example, add the following line to the Makefile:

    
    $(O)\sample.inf
    
    
  2. Add directives to the Makefile that will generate a new INF file and execute the Stampinf tool to time stamp the INF file. For example, the following code example shows how you can create and time stamp an INF file that is named Sample.inf:

    
    $(O)\ sample.inf: $(_INX)\ sample.inx $(_LNG)\ sample.txt
        $(C_PREPROCESSOR_NAME) $(PREFLAGS) $(_LNG)\$(@B).txt > $(O)\$(@B).txt1
        copy /b $(_INX)\$(@B).inx+$(O)\$(@B).txt1 $@
        @del $(O)\$(@B).txt1
        stampinf -f sample.inf -d * -v * -c MyCatalogFile.cat
        $(TSBINPLACE_CMD)
    
    

    The following Stampinf command-line parameters are used in this example:

    • The -d * parameter uses the current date as part of the DriverVer directive in the INF file.
    • The -v * parameter uses the current time for the version number. If the STAMPINF_VERSION environment variable is set, Stampinf uses the version number value that is specified by this environment variable.
    • The -c parameter specifies the name of the catalog file for the driver package. This value is written to the CatalogFile directive of the INF Version section of the generated IF file.
    Note  If you set the environment variable PRIVATE_DRIVER_PACKAGE, Stampinf uses the current date and version for the INF DriverVer directive. By setting this environment variable, you do not have to use the -d or -v parameters in your Makefile.

Once the driver is built, you must sign the driver package and must use the same catalog file that was specified in the -c parameter of Stampinf within your Makefile. To sign the driver package, follow the steps that are outlined in Signing Drivers During Development and Test (Windows Vista and Later).

 

 

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