FreeBSD-5.3/usr.sbin/config/config.y
%union {
char *str;
int val;
struct file_list *file;
}
%token ARCH
%token COMMA
%token CONFIG
%token CPU
%token DEVICE
%token NODEVICE
%token ENV
%token EQUALS
%token HINTS
%token IDENT
%token MAXUSERS
%token PROFILE
%token OPTIONS
%token NOOPTION
%token MAKEOPTIONS
%token NOMAKEOPTION
%token SEMICOLON
%token INCLUDE
%token FILES
%token <str> ID
%token <val> NUMBER
%type <str> Save_id
%type <str> Opt_value
%type <str> Dev
%{
/*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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: src/usr.sbin/config/config.y,v 1.63 2004/05/09 22:29:00 cognet Exp $
*/
#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;
char *hints;
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);
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 ID SEMICOLON
= { include($2, 0); };
|
FILES ID SEMICOLON
= { newfile($2); };
|
SEMICOLON
|
error SEMICOLON
;
Config_spec:
ARCH Save_id
= {
if (machinename != NULL)
errx(1, "%s:%d: only one machine directive is allowed",
yyfile, yyline);
machinename = $2;
} |
CPU Save_id
= {
struct cputype *cp =
(struct cputype *)malloc(sizeof (struct cputype));
memset(cp, 0, sizeof(*cp));
cp->cpu_name = $2;
SLIST_INSERT_HEAD(&cputype, cp, cpu_next);
} |
OPTIONS Opt_list
|
NOOPTION Save_id
= { rmopt(&opt, $2); } |
MAKEOPTIONS Mkopt_list
|
NOMAKEOPTION Save_id
= { rmopt(&mkopt, $2); } |
IDENT ID
= { ident = $2; } |
System_spec
|
MAXUSERS NUMBER
= { maxusers = $2; } |
PROFILE NUMBER
= { profiling = $2; } |
ENV ID
= {
env = $2;
envmode = 1;
} |
HINTS ID
= {
hints = $2;
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); };
System_parameter_list:
System_parameter_list ID
| ID
;
Opt_list:
Opt_list COMMA Option
|
Option
;
Option:
Save_id
= {
char *s;
newopt(&opt, $1, NULL);
if ((s = strchr($1, '=')))
errx(1, "%s:%d: The `=' in options should not be "
"quoted", yyfile, yyline);
} |
Save_id EQUALS Opt_value
= {
newopt(&opt, $1, $3);
} ;
Opt_value:
ID
= { $$ = $1; } |
NUMBER
= {
char buf[80];
(void) snprintf(buf, sizeof(buf), "%d", $1);
$$ = ns(buf);
} ;
Save_id:
ID
= { $$ = $1; }
;
Mkopt_list:
Mkopt_list COMMA Mkoption
|
Mkoption
;
Mkoption:
Save_id
= { newopt(&mkopt, $1, ns("")); } |
Save_id EQUALS Opt_value
= { newopt(&mkopt, $1, $3); } ;
Dev:
ID
= { $$ = $1; }
;
Device_spec:
DEVICE Dev
= {
newopt(&opt, devopt($2), ns("1"));
/* and the device part */
newdev($2, UNKNOWN);
} |
DEVICE Dev NUMBER
= {
newopt(&opt, devopt($2), ns("1"));
/* and the device part */
newdev($2, $3);
if ($3 == 0)
errx(1, "%s:%d: devices with zero units are not "
"likely to be correct", yyfile, yyline);
} |
NODEVICE Dev
= {
char *s = devopt($2);
rmopt(&opt, s);
free(s);
/* and the device part */
rmdev($2);
} ;
%%
void
yyerror(const char *s)
{
errx(1, "%s:%d: %s", yyfile, yyline + 1, s);
}
/*
* Add a new file to the list of files.
*/
static void
newfile(char *name)
{
struct files_name *nl;
nl = (struct files_name *) malloc(sizeof *nl);
bzero(nl, sizeof *nl);
nl->f_name = name;
STAILQ_INSERT_TAIL(&fntab, nl, f_next);
}
/*
* add a device to the list of devices
*/
static void
newdev(char *name, int count)
{
struct device *np;
np = (struct device *) malloc(sizeof *np);
memset(np, 0, sizeof(*np));
np->d_name = name;
np->d_count = count;
STAILQ_INSERT_TAIL(&dtab, np, d_next);
}
/*
* remove a device from the list of devices
*/
static void
rmdev(char *name)
{
struct device *dp, *rmdp;
STAILQ_FOREACH(dp, &dtab, d_next) {
if (eq(dp->d_name, name)) {
rmdp = dp;
dp = STAILQ_NEXT(dp, d_next);
STAILQ_REMOVE(&dtab, rmdp, device, d_next);
free(rmdp->d_name);
free(rmdp);
if (dp == NULL)
break;
}
}
}
static void
newopt(struct opt_head *list, char *name, char *value)
{
struct opt *op;
op = (struct opt *)malloc(sizeof (struct opt));
memset(op, 0, sizeof(*op));
op->op_name = name;
op->op_ownfile = 0;
op->op_value = value;
SLIST_INSERT_HEAD(list, op, op_next);
}
static void
rmopt(struct opt_head *list, char *name)
{
struct opt *op, *rmop;
SLIST_FOREACH(op, list, op_next) {
if (eq(op->op_name, name)) {
rmop = op;
op = SLIST_NEXT(op, op_next);
SLIST_REMOVE(list, rmop, opt, op_next);
free(rmop->op_name);
if (rmop->op_value != NULL)
free(rmop->op_value);
free(rmop);
if (op == NULL)
break;
}
}
}