%union {
char *str;
int val;
struct file_list *file;
}
%token ARCH
%token COMMA
%token CONFIG
%token CPU
%token NOCPU
%token DEVICE
%token NODEVICE
%token ENV
%token ENVVAR
%token EQUALS
%token PLUSEQUALS
%token HINTS
%token IDENT
%token MAXUSERS
%token PROFILE
%token OPTIONS
%token NOOPTION
%token MAKEOPTIONS
%token NOMAKEOPTION
%token SEMICOLON
%token INCLUDE
%token FILES
%token <str> ENVLINE
%token <str> ID
%token <val> NUMBER
%type <str> Save_id
%type <str> Opt_value
%type <str> Dev
%token <str> PATH
%{
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)config.y 8.1 (Berkeley) 6/6/93
* $FreeBSD$
*/
#include <assert.h>
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <string.h>
#include "config.h"
struct device_head dtab;
char *ident;
char *env;
int envmode;
int hintmode;
int yyline;
const char *yyfile;
struct file_list_head ftab;
struct files_name_head fntab;
char errbuf[80];
int maxusers;
#define ns(s) strdup(s)
int include(const char *, int);
void yyerror(const char *s);
int yywrap(void);
static void newdev(char *name);
static void newfile(char *name);
static void rmdev_schedule(struct device_head *dh, char *name);
static void newopt(struct opt_head *list, char *name, char *value, int append);
static void rmopt_schedule(struct opt_head *list, char *name);
static char *
devopt(char *dev)
{
char *ret = malloc(strlen(dev) + 5);
sprintf(ret, "DEV_%s", dev);
raisestr(ret);
return ret;
}
%}
%%
Configuration:
Many_specs
;
Many_specs:
Many_specs Spec
|
/* lambda */
;
Spec:
Device_spec SEMICOLON
|
Config_spec SEMICOLON
|
INCLUDE PATH SEMICOLON {
if (incignore == 0)
include($2, 0);
};
|
INCLUDE ID SEMICOLON {
if (incignore == 0)
include($2, 0);
};
|
FILES ID SEMICOLON { newfile($2); };
|
SEMICOLON
|
error SEMICOLON
;
Config_spec:
ARCH Save_id {
if (machinename != NULL && !eq($2, machinename))
errx(1, "%s:%d: only one machine directive is allowed",
yyfile, yyline);
machinename = $2;
machinearch = $2;
} |
ARCH Save_id Save_id {
if (machinename != NULL &&
!(eq($2, machinename) && eq($3, machinearch)))
errx(1, "%s:%d: only one machine directive is allowed",
yyfile, yyline);
machinename = $2;
machinearch = $3;
} |
CPU Save_id {
struct cputype *cp =
(struct cputype *)calloc(1, sizeof (struct cputype));
if (cp == NULL)
err(EXIT_FAILURE, "calloc");
cp->cpu_name = $2;
SLIST_INSERT_HEAD(&cputype, cp, cpu_next);
} |
NOCPU Save_id {
struct cputype *cp, *cp2;
SLIST_FOREACH_SAFE(cp, &cputype, cpu_next, cp2) {
if (eq(cp->cpu_name, $2)) {
SLIST_REMOVE(&cputype, cp, cputype, cpu_next);
free(cp);
}
}
} |
OPTIONS Opt_list
|
NOOPTION NoOpt_list |
MAKEOPTIONS Mkopt_list
|
NOMAKEOPTION Save_id { rmopt_schedule(&mkopt, $2); } |
IDENT ID { ident = $2; } |
System_spec
|
MAXUSERS NUMBER { maxusers = $2; } |
PROFILE NUMBER { profiling = $2; } |
ENV ID {
env = $2;
envmode = 1;
} |
ENVVAR ENVLINE {
struct envvar *envvar;
envvar = (struct envvar *)calloc(1, sizeof (struct envvar));
if (envvar == NULL)
err(EXIT_FAILURE, "calloc");
envvar->env_str = $2;
STAILQ_INSERT_TAIL(&envvars, envvar, envvar_next);
} |
HINTS ID {
struct hint *hint;
hint = (struct hint *)calloc(1, sizeof (struct hint));
if (hint == NULL)
err(EXIT_FAILURE, "calloc");
hint->hint_name = $2;
STAILQ_INSERT_TAIL(&hints, hint, hint_next);
hintmode = 1;
}
System_spec:
CONFIG System_id System_parameter_list {
errx(1, "%s:%d: root/dump/swap specifications obsolete",
yyfile, yyline);
}
|
CONFIG System_id
;
System_id:
Save_id { newopt(&mkopt, ns("KERNEL"), $1, 0); };
System_parameter_list:
System_parameter_list ID
| ID
;
Opt_list:
Opt_list COMMA Option
|
Option
;
NoOpt_list:
NoOpt_list COMMA NoOption
|
NoOption
;
Option:
Save_id {
newopt(&opt, $1, NULL, 0);
if (strchr($1, '=') != NULL)
errx(1, "%s:%d: The `=' in options should not be "
"quoted", yyfile, yyline);
} |
Save_id EQUALS Opt_value {
newopt(&opt, $1, $3, 0);
} ;
NoOption:
Save_id {
rmopt_schedule(&opt, $1);
};
Opt_value:
ID { $$ = $1; } |
NUMBER {
char buf[80];
(void) snprintf(buf, sizeof(buf), "%d", $1);
$$ = ns(buf);
} ;
Save_id:
ID { $$ = $1; }
;
Mkopt_list:
Mkopt_list COMMA Mkoption
|
Mkoption
;
Mkoption:
Save_id { newopt(&mkopt, $1, ns(""), 0); } |
Save_id EQUALS { newopt(&mkopt, $1, ns(""), 0); } |
Save_id EQUALS Opt_value { newopt(&mkopt, $1, $3, 0); } |
Save_id PLUSEQUALS Opt_value { newopt(&mkopt, $1, $3, 1); } ;
Dev:
ID { $$ = $1; }
;
Device_spec:
DEVICE Dev_list
|
NODEVICE NoDev_list
;
Dev_list:
Dev_list COMMA Device
|
Device
;
NoDev_list:
NoDev_list COMMA NoDevice
|
NoDevice
;
Device:
Dev {
newopt(&opt, devopt($1), ns("1"), 0);
/* and the device part */
newdev($1);
}
NoDevice:
Dev {
char *s = devopt($1);
rmopt_schedule(&opt, s);
free(s);
/* and the device part */
rmdev_schedule(&dtab, $1);
} ;
%%
void
yyerror(const char *s)
{
errx(1, "%s:%d: %s", yyfile, yyline + 1, s);
}
int
yywrap(void)
{
if (found_defaults) {
if (freopen(PREFIX, "r", stdin) == NULL)
err(2, "%s", PREFIX);
yyfile = PREFIX;
yyline = 0;
found_defaults = 0;
return 0;
}
return 1;
}
/*
* Add a new file to the list of files.
*/
static void
newfile(char *name)
{
struct files_name *nl;
nl = (struct files_name *) calloc(1, sizeof *nl);
if (nl == NULL)
err(EXIT_FAILURE, "calloc");
nl->f_name = name;
STAILQ_INSERT_TAIL(&fntab, nl, f_next);
}
/*
* Find a device in the list of devices.
*/
static struct device *
finddev(struct device_head *dlist, char *name)
{
struct device *dp;
STAILQ_FOREACH(dp, dlist, d_next)
if (eq(dp->d_name, name))
return (dp);
return (NULL);
}
/*
* Add a device to the list of devices.
*/
static void
newdev(char *name)
{
struct device *np;
if (finddev(&dtab, name)) {
fprintf(stderr,
"WARNING: duplicate device `%s' encountered.\n", name);
return;
}
np = (struct device *) calloc(1, sizeof *np);
if (np == NULL)
err(EXIT_FAILURE, "calloc");
np->d_name = name;
STAILQ_INSERT_TAIL(&dtab, np, d_next);
}
/*
* Schedule a device to removal.
*/
static void
rmdev_schedule(struct device_head *dh, char *name)
{
struct device *dp;
dp = finddev(dh, name);
if (dp != NULL) {
STAILQ_REMOVE(dh, dp, device, d_next);
free(dp->d_name);
free(dp);
}
}
/*
* Find an option in the list of options.
*/
static struct opt *
findopt(struct opt_head *list, char *name)
{
struct opt *op;
SLIST_FOREACH(op, list, op_next)
if (eq(op->op_name, name))
return (op);
return (NULL);
}
/*
* Add an option to the list of options.
*/
static void
newopt(struct opt_head *list, char *name, char *value, int append)
{
struct opt *op, *op2;
/*
* Ignore inclusions listed explicitly for configuration files.
*/
if (eq(name, OPT_AUTOGEN)) {
incignore = 1;
return;
}
op2 = findopt(list, name);
if (op2 != NULL && !append) {
fprintf(stderr,
"WARNING: duplicate option `%s' encountered.\n", name);
return;
}
op = (struct opt *)calloc(1, sizeof (struct opt));
if (op == NULL)
err(EXIT_FAILURE, "calloc");
op->op_name = name;
op->op_ownfile = 0;
op->op_value = value;
if (op2 != NULL) {
while (SLIST_NEXT(op2, op_append) != NULL)
op2 = SLIST_NEXT(op2, op_append);
SLIST_NEXT(op2, op_append) = op;
} else
SLIST_INSERT_HEAD(list, op, op_next);
}
/*
* Remove an option from the list of options.
*/
static void
rmopt_schedule(struct opt_head *list, char *name)
{
struct opt *op;
op = findopt(list, name);
if (op != NULL) {
SLIST_REMOVE(list, op, opt, op_next);
free(op->op_name);
free(op);
}
}
