/dev/drivers

caller	pkgpath of the realm that crossed into this read
domain	the chain domain
drivers	this table
height	current block height
null	always empty; the bit bucket
random	sha256 of chain id and height, hex; block-deterministic, NOT unpredictable
session	the calling key's session scope, one AllowPath per line
sysname	the chain id
time	block time, RFC3339
user	the origin caller's address
zero	endless NUL bytes; reads exactly what you ask for

all devices