At the moment, hintmode and envmode are used to indicate whether static hints or static env have been provided in the kernel config(5) and the static versions are mutually exclusive with loader(8)-provided environment. hintmode *can* be reconfigured later to pull from the dynamic environment, thus taking advantage of the loader(8) or post-kmem environment setting. This changeset fixes both problems at once to move us from a semi-confusing state to a consistent state: if an environment file, hints file, or loader(8) environment are provided, we use them in a well-known order of precedence: - loader(8) environment - static environment - static hints file Once the dynamic environment is setup this becomes a moot point. The loader(8) and static environments are merged (respecting the above order of precedence), and the static hints are merged in on an as-needed basis after the dynamic environment has been setup. Hints lookup are changed to respect all of the above. Before the dynamic environment is setup, lookups use the above-mentioned order and fallback to the next environment if a matching hint is not found. Once the dynamic environment is setup, that is used on its own since it captures all of the above information plus any dynamic kenv settings that came up later in boot. The following tangentially related changes were made to res_find: - A hintp cookie is now passed in so that related searches continue using the chain of environments (or dynamic environment) without relying on global state - All three environments will be searched if they actually have valid hints to use, rather than just choosing the first environment that actually had a hint and rolling with that only The hintmode sysctl has been ripped out. static_{env,hints}.disabled are still honored and will disable their respective environments from being used for hint lookups and from being merged into the dynamic environment, as expected. MFC after: 1 month (maybe) Differential Revision: https://reviews.freebsd.org/D15953
221 lines
5.8 KiB
C
221 lines
5.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. 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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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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* @(#)config.h 8.1 (Berkeley) 6/6/93
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* $FreeBSD$
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*/
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/*
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* Config.
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*/
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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struct cfgfile {
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STAILQ_ENTRY(cfgfile) cfg_next;
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char *cfg_path;
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};
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STAILQ_HEAD(, cfgfile) cfgfiles;
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struct file_list {
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STAILQ_ENTRY(file_list) f_next;
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char *f_fn; /* the name */
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int f_type; /* type */
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u_char f_flags; /* see below */
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char *f_compilewith; /* special make rule if present */
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char *f_depends; /* additional dependencies */
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char *f_clean; /* File list to add to clean rule */
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char *f_warn; /* warning message */
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const char *f_objprefix; /* prefix string for object name */
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const char *f_srcprefix; /* source prefix such as $S/ */
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};
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struct files_name {
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char *f_name;
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STAILQ_ENTRY(files_name) f_next;
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};
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/*
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* Types.
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*/
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#define NORMAL 1
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#define PROFILING 3
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#define NODEPEND 4
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#define LOCAL 5
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#define DEVDONE 0x80000000
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#define TYPEMASK 0x7fffffff
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/*
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* Attributes (flags).
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*/
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#define NO_IMPLCT_RULE 1
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#define NO_OBJ 2
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#define BEFORE_DEPEND 4
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#define NOWERROR 16
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struct device {
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int d_done; /* processed */
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char *d_name; /* name of device (e.g. rk11) */
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#define UNKNOWN -2 /* -2 means not set yet */
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STAILQ_ENTRY(device) d_next; /* Next one in list */
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};
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struct config {
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char *s_sysname;
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};
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/*
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* Config has a global notion of which machine type is
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* being used. It uses the name of the machine in choosing
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* files and directories. Thus if the name of the machine is ``i386'',
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* it will build from ``Makefile.i386'' and use ``../i386/inline''
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* in the makerules, etc. machinearch is the global notion of the
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* MACHINE_ARCH for this MACHINE.
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*/
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char *machinename;
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char *machinearch;
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/*
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* For each machine, a set of CPU's may be specified as supported.
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* These and the options (below) are put in the C flags in the makefile.
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*/
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struct cputype {
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char *cpu_name;
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SLIST_ENTRY(cputype) cpu_next;
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};
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SLIST_HEAD(, cputype) cputype;
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/*
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* A set of options may also be specified which are like CPU types,
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* but which may also specify values for the options.
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* A separate set of options may be defined for make-style options.
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*/
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struct opt {
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char *op_name;
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char *op_value;
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int op_ownfile; /* true = own file, false = makefile */
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SLIST_ENTRY(opt) op_next;
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SLIST_ENTRY(opt) op_append;
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};
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SLIST_HEAD(opt_head, opt) opt, mkopt, rmopts;
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struct opt_list {
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char *o_name;
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char *o_file;
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int o_flags;
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#define OL_ALIAS 1
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SLIST_ENTRY(opt_list) o_next;
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};
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SLIST_HEAD(, opt_list) otab;
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struct envvar {
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char *env_str;
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bool env_is_file;
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STAILQ_ENTRY(envvar) envvar_next;
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};
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STAILQ_HEAD(envvar_head, envvar) envvars;
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struct hint {
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char *hint_name;
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STAILQ_ENTRY(hint) hint_next;
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};
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STAILQ_HEAD(hint_head, hint) hints;
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struct includepath {
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char *path;
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SLIST_ENTRY(includepath) path_next;
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};
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SLIST_HEAD(, includepath) includepath;
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/*
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* Tag present in the kernconf.tmpl template file. It's mandatory for those
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* two strings to be the same. Otherwise you'll get into trouble.
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*/
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#define KERNCONFTAG "%%KERNCONFFILE%%"
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/*
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* Faked option to note, that the configuration file has been taken from the
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* kernel file and inclusion of DEFAULTS etc.. isn't nessesery, because we
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* already have a list of all required devices.
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*/
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#define OPT_AUTOGEN "CONFIG_AUTOGENERATED"
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extern char *ident;
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extern char kernconfstr[];
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extern int do_trace;
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extern int incignore;
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char *get_word(FILE *);
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char *get_quoted_word(FILE *);
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char *path(const char *);
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char *raisestr(char *);
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void remember(const char *);
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void moveifchanged(const char *, const char *);
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int yylex(void);
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void options(void);
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void makefile(void);
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void makeenv(void);
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void makehints(void);
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void headers(void);
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void cfgfile_add(const char *);
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void cfgfile_removeall(void);
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FILE *open_makefile_template(void);
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extern STAILQ_HEAD(device_head, device) dtab;
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extern char errbuf[80];
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extern int yyline;
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extern const char *yyfile;
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extern STAILQ_HEAD(file_list_head, file_list) ftab;
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extern STAILQ_HEAD(files_name_head, files_name) fntab;
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extern int profiling;
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extern int debugging;
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extern int found_defaults;
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extern int maxusers;
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extern char *PREFIX; /* Config file name - for error messages */
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extern char srcdir[]; /* root of the kernel source tree */
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#define eq(a,b) (!strcmp(a,b))
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#define ns(s) strdup(s)
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