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344378 |
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20-Feb-2019 |
kevans |
MFC r336244, r336246-r336247: Standardize boot arg parsing
r336244:
Create helper functions for parsing boot args.
boot_parse_arg to parse a single arg
boot_parse_cmdline to parse a command line string
boot_parse_args to parse all the args in a vector
boot_howto_to_env Convert howto bits to env vars
boot_env_to_howto Return howto mask mased on what's set in the environment.
All these routines return an int that's the bitmask of the args
translated to RB_* flags. As a special case, the 'S' flag sets the
comconsole_speed env var. Any arg that looks like a=b will set the env
key 'a' to value 'b'. If =b is omitted, 'a' is set to '1'. This
should help us reduce the number of redundant copies of these routines
in the tree. It should also give a more uniform experience between
platforms.
Also, invent a new flag RB_PROBE that's set when 'P' is parsed. On
x86 + BIOS, this means 'probe for the keyboard, and if it's not there
set both RB_MULTIPLE and RB_SERIAL (which means show the output on
both video and serial consoles, but make serial primary). Others it
may be some similar concept of probing, but it's loader dependent
what, exactly, it means.
These routines are suitable for /boot/loader and/or the kernel,
though they may not be suitable for the tightly hand-rolled-for-space
environments like boot2.
r336246:
Eliminate boot loader copies of boot arg parsing.
Eliminate 4 of the copies of the arg parsing in /boot/laoder
by using boot_parse_cmdline.
r336247:
Transition to boot_env_to_howto and boot_howto_to_env in the boot
loader.
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| #
335755 |
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28-Jun-2018 |
kevans |
MFC r334882, r334884-r334885: loader(8) boot flag <-> environment fixes
r334882:
stand: Consolidate checking for boot flags driven by environment vars
e.g. boot_mute, boot_single, boot_verbose, and friends; we checked for these
in multiple places, consolidate into common/ and allow a setting of "NO" for
any of these to turn them off. This allows systems with multiple
loader.conf(5) or loader.conf(5) overlay systems to easily turn off
variables in later processed files by setting it to NO.
Reported by: Nick Wolff @ iXsystems
Reviewed by: imp
r334884:
stand: Fix build after r334882
Not sure how this was not caught in Universe.
r334885:
stand: One more trivial consolidation (setting environment from howto)
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