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freebsd-dev/usr.sbin/config/config.y
Peter Wemm ef354ff70d Understand 'config kernelname' and pretend it was a 
'makeoptions KERNEL=kernelname'.  Warn about any trailing stuff as it's
not handled here.  This is a simple bandaid, hopefully to head off some
complaints from certain people.
1999-05-10 02:42:58 +00:00

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%union {
char *str;
int val;
struct file_list *file;
}
%token AND
%token ANY
%token AT
%token BIO
%token BUS
%token CAM
%token COMMA
%token CONFIG
%token CONFLICTS
%token CONTROLLER
%token CPU
%token DEVICE
%token DISABLE
%token DISK
%token DRIVE
%token DRQ
%token EQUALS
%token FLAGS
%token IDENT
%token IOMEM
%token IOSIZ
%token IRQ
%token MACHINE
%token MAJOR
%token MASTER
%token MAXUSERS
%token MINOR
%token MINUS
%token NET
%token NEXUS
%token OPTIONS
%token MAKEOPTIONS
%token PORT
%token PRIORITY
%token PSEUDO_DEVICE
%token SEMICOLON
%token SEQUENTIAL
%token SIZE
%token SLAVE
%token TARGET
%token TTY
%token TRACE
%token UNIT
%token VECTOR
%token <str> ID
%token <val> NUMBER
%token <val> FPNUMBER
%type <str> Save_id
%type <str> Opt_value
%type <str> Dev
%type <str> device_name
%{
/*
* 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
*/
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <string.h>
#include "config.h"
static struct device cur;
static struct device *curp = 0;
struct device *dtab;
char *ident;
int yyline;
struct file_list *ftab;
char errbuf[80];
int maxusers;
int do_trace;
int seen_scbus;
#define ns(s) strdup(s)
static struct device *connect __P((char *, int));
static struct device *huhcon __P((char *));
static void yyerror __P((char *s));
%}
%%
Configuration:
Many_specs
;
Many_specs:
Many_specs Spec
|
/* lambda */
;
Spec:
Device_spec SEMICOLON
= { newdev(&cur); } |
Config_spec SEMICOLON
|
TRACE SEMICOLON
= { do_trace = !do_trace; } |
SEMICOLON
|
error SEMICOLON
;
Config_spec:
MACHINE Save_id
= {
if (!strcmp($2, "i386")) {
machine = MACHINE_I386;
machinename = "i386";
} else if (!strcmp($2, "pc98")) {
machine = MACHINE_PC98;
machinename = "pc98";
} else if (!strcmp($2, "alpha")) {
machine = MACHINE_ALPHA;
machinename = "alpha";
} else
yyerror("Unknown machine type");
} |
CPU Save_id
= {
struct cputype *cp =
(struct cputype *)malloc(sizeof (struct cputype));
memset(cp, 0, sizeof(*cp));
cp->cpu_name = $2;
cp->cpu_next = cputype;
cputype = cp;
} |
OPTIONS Opt_list
|
MAKEOPTIONS Mkopt_list
|
IDENT ID
= { ident = $2; } |
System_spec
|
MAXUSERS NUMBER
= { maxusers = $2; };
System_spec:
CONFIG System_id System_parameter_list
= { warnx("line %d: root/dump/swap specifications obsolete", yyline);}
|
CONFIG System_id
;
System_id:
Save_id
= {
struct opt *op = (struct opt *)malloc(sizeof (struct opt));
memset(op, 0, sizeof(*op));
op->op_name = ns("KERNEL");
op->op_ownfile = 0;
op->op_next = mkopt;
op->op_value = $1;
op->op_line = yyline + 1;
mkopt = op;
};
System_parameter_list:
System_parameter_list ID
| ID
;
device_name:
Save_id
= { $$ = $1; }
| Save_id NUMBER
= {
char buf[80];
(void) snprintf(buf, sizeof(buf), "%s%d", $1, $2);
$$ = ns(buf); free($1);
}
| Save_id NUMBER ID
= {
char buf[80];
(void) snprintf(buf, sizeof(buf), "%s%d%s", $1, $2, $3);
$$ = ns(buf); free($1);
}
| Save_id NUMBER ID NUMBER
= {
char buf[80];
(void) snprintf(buf, sizeof(buf), "%s%d%s%d",
$1, $2, $3, $4);
$$ = ns(buf); free($1);
}
| Save_id NUMBER ID NUMBER ID
= {
char buf[80];
(void) snprintf(buf, sizeof(buf), "%s%d%s%d%s",
$1, $2, $3, $4, $5);
$$ = ns(buf); free($1);
}
;
Opt_list:
Opt_list COMMA Option
|
Option
;
Option:
Save_id
= {
struct opt *op = (struct opt *)malloc(sizeof (struct opt));
char *s;
memset(op, 0, sizeof(*op));
op->op_name = $1;
op->op_next = opt;
op->op_value = 0;
/*
* op->op_line is 1-based; yyline is 0-based but is now 1
* larger than when `Save_id' was lexed.
*/
op->op_line = yyline;
opt = op;
if ((s = strchr(op->op_name, '='))) {
warnx("line %d: The `=' in options should not be quoted", yyline);
*s = '\0';
op->op_value = ns(s + 1);
}
} |
Save_id EQUALS Opt_value
= {
struct opt *op = (struct opt *)malloc(sizeof (struct opt));
memset(op, 0, sizeof(*op));
op->op_name = $1;
op->op_next = opt;
op->op_value = $3;
op->op_line = yyline + 1;
opt = op;
} ;
Opt_value:
ID
= { $$ = $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 EQUALS Opt_value
= {
struct opt *op = (struct opt *)malloc(sizeof (struct opt));
memset(op, 0, sizeof(*op));
op->op_name = $1;
op->op_ownfile = 0; /* for now */
op->op_next = mkopt;
op->op_value = $3;
op->op_line = yyline + 1;
mkopt = op;
} ;
Dev:
ID
= { $$ = $1; }
;
Device_spec:
DEVICE Dev_name Dev_info Int_spec
= { cur.d_type = DEVICE; } |
MASTER Dev_name Dev_info Int_spec
= { cur.d_type = MASTER; } |
DISK Dev_name Dev_info Int_spec
= { cur.d_dk = 1; cur.d_type = DEVICE; } |
CONTROLLER Dev_name Dev_info Int_spec
= { cur.d_type = CONTROLLER; } |
PSEUDO_DEVICE Init_dev Dev
= {
cur.d_name = $3;
cur.d_type = PSEUDO_DEVICE;
} |
PSEUDO_DEVICE Init_dev Dev NUMBER
= {
cur.d_name = $3;
cur.d_type = PSEUDO_DEVICE;
cur.d_slave = $4;
} ;
Dev_name:
Init_dev Dev NUMBER
= {
cur.d_name = $2;
if (eq($2, "scbus"))
seen_scbus = 1;
cur.d_unit = $3;
};
Init_dev:
/* lambda */
= { init_dev(&cur); };
Dev_info:
Con_info Info_list
|
/* lambda */
;
Con_info:
AT Dev NUMBER
= {
if (eq(cur.d_name, "mba") || eq(cur.d_name, "uba")) {
(void) snprintf(errbuf, sizeof(errbuf),
"%s must be connected to a nexus", cur.d_name);
yyerror(errbuf);
}
cur.d_conn = connect($2, $3);
} |
AT NEXUS NUMBER
= { check_nexus(&cur, $3); cur.d_conn = TO_NEXUS; };
Info_list:
Info_list Info
|
/* lambda */
;
Info:
BUS NUMBER
= {
if (cur.d_conn != 0 && cur.d_conn->d_type == CONTROLLER)
cur.d_slave = $2;
else
yyerror("can't specify a bus to something "
"other than a controller");
} |
TARGET NUMBER
= { cur.d_target = $2; } |
UNIT NUMBER
= { cur.d_lun = $2; } |
DRIVE NUMBER
= { cur.d_drive = $2; } |
SLAVE NUMBER
= {
if (cur.d_conn != 0 && cur.d_conn != TO_NEXUS &&
cur.d_conn->d_type == MASTER)
cur.d_slave = $2;
else
yyerror("can't specify slave--not to master");
} |
IRQ NUMBER
= { cur.d_irq = $2; } |
DRQ NUMBER
= { cur.d_drq = $2; } |
IOMEM NUMBER
= { cur.d_maddr = $2; } |
IOSIZ NUMBER
= { cur.d_msize = $2; } |
PORT device_name
= { cur.d_port = $2; } |
PORT NUMBER
= { cur.d_portn = $2; } |
TTY
= { yyerror("`tty' interrupt label obsolete"); } |
BIO
= { yyerror("`bio' interrupt label obsolete"); } |
CAM
= { yyerror("`cam' interrupt label obsolete"); } |
NET
= { yyerror("`net' interrupt label obsolete"); } |
FLAGS NUMBER
= { cur.d_flags = $2; } |
DISABLE
= { cur.d_disabled = 1; } |
CONFLICTS
= { cur.d_conflicts = 1; };
Int_spec:
VECTOR ID
= { yyerror("`vector xxxintr' interrupt vector obsolete"); } |
PRIORITY NUMBER
= { yyerror("`priority nnn' interrupt priority obsolete"); } |
/* lambda */
;
%%
static void
yyerror(s)
char *s;
{
warnx("line %d: %s", yyline + 1, s);
}
/*
* add a device to the list of devices
*/
static void
newdev(dp)
register struct device *dp;
{
register struct device *np, *xp;
if (dp->d_unit >= 0) {
for (xp = dtab; xp != 0; xp = xp->d_next) {
if ((xp->d_unit == dp->d_unit) &&
eq(xp->d_name, dp->d_name)) {
warnx("line %d: already seen device %s%d",
yyline, xp->d_name, xp->d_unit);
}
}
}
np = (struct device *) malloc(sizeof *np);
memset(np, 0, sizeof(*np));
*np = *dp;
np->d_next = 0;
if (curp == 0)
dtab = np;
else
curp->d_next = np;
curp = np;
}
/*
* find the pointer to connect to the given device and number.
* returns 0 if no such device and prints an error message
*/
static struct device *
connect(dev, num)
register char *dev;
register int num;
{
register struct device *dp;
if (num == QUES)
return (huhcon(dev));
for (dp = dtab; dp != 0; dp = dp->d_next) {
if ((num != dp->d_unit) || !eq(dev, dp->d_name))
continue;
if (dp->d_type != CONTROLLER && dp->d_type != MASTER) {
(void) snprintf(errbuf, sizeof(errbuf),
"%s connected to non-controller", dev);
yyerror(errbuf);
return (0);
}
return (dp);
}
(void) snprintf(errbuf, sizeof(errbuf), "%s %d not defined", dev, num);
yyerror(errbuf);
return (0);
}
/*
* connect to an unspecific thing
*/
static struct device *
huhcon(dev)
register char *dev;
{
register struct device *dp, *dcp;
struct device rdev;
int oldtype;
/*
* First make certain that there are some of these to wildcard on
*/
for (dp = dtab; dp != 0; dp = dp->d_next)
if (eq(dp->d_name, dev))
break;
if (dp == 0) {
(void) snprintf(errbuf, sizeof(errbuf), "no %s's to wildcard",
dev);
yyerror(errbuf);
return (0);
}
oldtype = dp->d_type;
dcp = dp->d_conn;
/*
* Now see if there is already a wildcard entry for this device
* (e.g. Search for a "uba ?")
*/
for (; dp != 0; dp = dp->d_next)
if (eq(dev, dp->d_name) && dp->d_unit == -1)
break;
/*
* If there isn't, make one because everything needs to be connected
* to something.
*/
if (dp == 0) {
dp = &rdev;
init_dev(dp);
dp->d_unit = QUES;
dp->d_name = ns(dev);
dp->d_type = oldtype;
newdev(dp);
dp = curp;
/*
* Connect it to the same thing that other similar things are
* connected to, but make sure it is a wildcard unit
* (e.g. up connected to sc ?, here we make connect sc? to a
* uba?). If other things like this are on the NEXUS or
* if they aren't connected to anything, then make the same
* connection, else call ourself to connect to another
* unspecific device.
*/
if (dcp == TO_NEXUS || dcp == 0)
dp->d_conn = dcp;
else
dp->d_conn = connect(dcp->d_name, QUES);
}
return (dp);
}
void
init_dev(dp)
register struct device *dp;
{
dp->d_name = "OHNO!!!";
dp->d_type = DEVICE;
dp->d_conn = 0;
dp->d_conflicts = 0;
dp->d_disabled = 0;
dp->d_flags = dp->d_dk = 0;
dp->d_slave = dp->d_lun = dp->d_target = dp->d_drive = dp->d_unit = UNKNOWN;
dp->d_port = (char *)0;
dp->d_portn = -1;
dp->d_irq = -1;
dp->d_drq = -1;
dp->d_maddr = 0;
dp->d_msize = 0;
}
/*
* make certain that this is a reasonable type of thing to connect to a nexus
*/
static void
check_nexus(dev, num)
register struct device *dev;
int num;
{
switch (machine) {
case MACHINE_I386:
case MACHINE_PC98:
#if 0
if (!eq(dev->d_name, "isa"))
yyerror("only isa's should be connected to the nexus");
#endif
break;
}
}
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