getenv_string broken?

John Baldwin jhb at
Tue Jan 27 17:40:39 PST 2004

On Tuesday 27 January 2004 12:42 am, Nate Lawson wrote:
> I have a getenv_string() that is never being evaluated.  I declared it as
> follows:
> static char acpi_os_name[128];
> TUNABLE_STR("hw.acpi.os_name", acpi_os_name, sizeof(acpi_os_name));
> The contents of acpi_os_name are never filled in from the variable I
> declared in /boot/loader.conf. Just to be sure, I made a loop that prints
> out the contents of kenvp.  It does not have hw.acpi.os_name.
> Here is a snippet of the kenvp array, right where my tunable should be
> (os2 is from a test below):
> name: hint.vt.0.disabled=1
> name: hw.acpi.os2=8
> name: hw.acpi.reset_video=0
> name: hw.acpi.verbose=1
> name: hw.cbb.start_memory=0xc0203000
> For another test, I declared a tunable int right below the string, in the
> same source file.  It gets evaluated and assigned.
> static int acpi_os2 = 2;
> TUNABLE_INT("hw.acpi.os2", &acpi_os2);

What is in your /boot/loader.conf?

John Baldwin <jhb at>  <><
"Power Users Use the Power to Serve"  =

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