freebsd-skq/sys/pc98/i386
mux a207e41bef Rework the kernel environment subsystem. We now convert the static
environment needed at boot time to a dynamic subsystem when VM is
up.  The dynamic kernel environment is protected by an sx lock.

This adds some new functions to manipulate the kernel environment :
freeenv(), setenv(), unsetenv() and testenv().  freeenv() has to be
called after every getenv() when you have finished using the string.
testenv() only tests if an environment variable is present, and
doesn't require a freeenv() call. setenv() and unsetenv() are self
explanatory.

The kenv(2) syscall exports these new functionalities to userland,
mainly for kenv(1).

Reviewed by:	peter
2002-04-17 13:06:36 +00:00
..
busio.s Rewrite the pc98 bus_space stuff. 2001-10-07 10:04:18 +00:00
busiosubr.c Add bus_space_unmap() and bus_space_free() functions to release 2002-02-18 13:44:46 +00:00
machdep.c Rework the kernel environment subsystem. We now convert the static 2002-04-17 13:06:36 +00:00