1cb190742f
The boot-conf and boot code had various bugs, and some of it was big, ugly, unwieldy, and, sometimes, plain incorrect. I'm just about completely replaced these ugly parts with something much more manageable. Minor changes were made to the well-factorized parts of it, to accomodate the new code. Of note: * make sure boot-conf has the exact same behavior wrt boot order as start. * Correct both boot and boot-conf so they'll work correctly when compiled in, as they both had some bugs, minor and major. * Remove all the crud from loader.4th back into support.4th, for the first time since boot-conf was first improved. Hurray! I'm fairly satisfied with the code at this time. Time to see about those man pages...
279 lines
6.6 KiB
Forth
279 lines
6.6 KiB
Forth
\ Copyright (c) 1999 Daniel C. Sobral <dcs@freebsd.org>
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\ All rights reserved.
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\
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\ Redistribution and use in source and binary forms, with or without
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\ modification, are permitted provided that the following conditions
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\ are met:
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\ 1. Redistributions of source code must retain the above copyright
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\ notice, this list of conditions and the following disclaimer.
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\ 2. Redistributions in binary form must reproduce the above copyright
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\ notice, this list of conditions and the following disclaimer in the
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\ documentation and/or other materials provided with the distribution.
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\
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\ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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\ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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\ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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\ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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\ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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\ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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\ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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\ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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\ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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\ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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\ SUCH DAMAGE.
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\
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\ $FreeBSD$
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s" arch-alpha" environment? [if] [if]
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s" loader_version" environment? [if]
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3 < [if]
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.( Loader version 0.3+ required) cr
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abort
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[then]
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[else]
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.( Could not get loader version!) cr
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abort
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[then]
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[then] [then]
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s" arch-i386" environment? [if] [if]
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s" loader_version" environment? [if]
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8 < [if]
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.( Loader version 0.8+ required) cr
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abort
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[then]
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[else]
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.( Could not get loader version!) cr
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abort
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[then]
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[then] [then]
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include /boot/support.4th
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\ ***** boot-conf
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\
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\ Prepares to boot as specified by loaded configuration files.
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only forth also support-functions also builtins definitions
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: boot
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0= if ( interpreted ) get-arguments then
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\ Unload only if a path was passed
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dup if
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>r over r> swap
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c@ [char] - <> if
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0 1 unload drop
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else
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1 boot exit
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then
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else
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1 boot exit
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then
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load-conf
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?dup 0= if 0 1 boot then
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;
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: boot-conf
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0= if ( interpreted ) get-arguments then
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0 1 unload drop
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load-conf
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?dup 0= if 0 1 autoboot then
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;
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also forth definitions also builtins
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builtin: boot
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builtin: boot-conf
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only forth definitions also support-functions
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\ ***** check-password
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\
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\ If a password was defined, execute autoboot and ask for
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\ password if autoboot returns.
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: check-password
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password .addr @ if
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0 autoboot
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false >r
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begin
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bell emit bell emit
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." Password: "
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password .len @ read-password
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dup password .len @ = if
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2dup password .addr @ password .len @
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compare 0= if r> drop true >r then
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then
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drop free drop
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r@
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until
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r> drop
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then
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;
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\ ***** start
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\
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\ Initializes support.4th global variables, sets loader_conf_files,
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\ process conf files, and, if any one such file was succesfully
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\ read to the end, load kernel and modules.
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: start ( -- ) ( throws: abort & user-defined )
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s" /boot/defaults/loader.conf" initialize
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include_conf_files
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\ Will *NOT* try to load kernel and modules if no configuration file
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\ was succesfully loaded!
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any_conf_read? if
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load_kernel
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load_modules
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then
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;
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\ ***** initialize
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\
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\ Overrides support.4th initialization word with one that does
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\ everything start one does, short of loading the kernel and
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\ modules. Returns a flag
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: initialize ( -- flag )
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s" /boot/defaults/loader.conf" initialize
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include_conf_files
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any_conf_read?
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;
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\ ***** read-conf
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\
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\ Read a configuration file, whose name was specified on the command
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\ line, if interpreted, or given on the stack, if compiled in.
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: (read-conf) ( addr len -- )
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conf_files .addr @ ?dup if free abort" Fatal error freeing memory" then
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strdup conf_files .len ! conf_files .addr !
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include_conf_files \ Will recurse on new loader_conf_files definitions
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;
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: read-conf ( <filename> | addr len -- ) ( throws: abort & user-defined )
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state @ if
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\ Compiling
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postpone (read-conf)
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else
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\ Interpreting
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bl parse (read-conf)
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then
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; immediate
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\ ***** enable-module
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\
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\ Turn a module loading on.
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: enable-module ( <module> -- )
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bl parse module_options @ >r
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begin
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r@
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while
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2dup
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r@ module.name dup .addr @ swap .len @
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compare 0= if
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2drop
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r@ module.name dup .addr @ swap .len @ type
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true r> module.flag !
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." will be loaded." cr
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exit
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then
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r> module.next @ >r
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repeat
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r> drop
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type ." wasn't found." cr
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;
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\ ***** disable-module
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\
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\ Turn a module loading off.
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: disable-module ( <module> -- )
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bl parse module_options @ >r
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begin
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r@
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while
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2dup
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r@ module.name dup .addr @ swap .len @
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compare 0= if
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2drop
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r@ module.name dup .addr @ swap .len @ type
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false r> module.flag !
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." will not be loaded." cr
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exit
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then
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r> module.next @ >r
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repeat
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r> drop
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type ." wasn't found." cr
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;
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\ ***** toggle-module
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\
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\ Turn a module loading on/off.
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: toggle-module ( <module> -- )
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bl parse module_options @ >r
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begin
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r@
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while
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2dup
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r@ module.name dup .addr @ swap .len @
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compare 0= if
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2drop
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r@ module.name dup .addr @ swap .len @ type
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r@ module.flag @ 0= dup r> module.flag !
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if
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." will be loaded." cr
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else
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." will not be loaded." cr
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then
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exit
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then
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r> module.next @ >r
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repeat
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r> drop
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type ." wasn't found." cr
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;
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\ ***** show-module
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\
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\ Show loading information about a module.
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: show-module ( <module> -- )
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bl parse module_options @ >r
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begin
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r@
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while
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2dup
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r@ module.name dup .addr @ swap .len @
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compare 0= if
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2drop
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." Name: " r@ module.name dup .addr @ swap .len @ type cr
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." Path: " r@ module.loadname dup .addr @ swap .len @ type cr
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." Type: " r@ module.type dup .addr @ swap .len @ type cr
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." Flags: " r@ module.args dup .addr @ swap .len @ type cr
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." Before load: " r@ module.beforeload dup .addr @ swap .len @ type cr
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." After load: " r@ module.afterload dup .addr @ swap .len @ type cr
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." Error: " r@ module.loaderror dup .addr @ swap .len @ type cr
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." Status: " r> module.flag @ if ." Load" else ." Don't load" then cr
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exit
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then
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r> module.next @ >r
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repeat
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r> drop
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type ." wasn't found." cr
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;
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\ Words to be used inside configuration files
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: retry false ; \ For use in load error commands
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: ignore true ; \ For use in load error commands
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\ Return to strict forth vocabulary
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only forth also
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