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/* $OpenBSD: vars.c,v 1.12 2004/06/24 22:41:39 tom Exp $ */
/*
* Copyright (c) 1998-2000 Michael Shalayeff
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 MIND, 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.
*
*/
#include <sys/param.h>
#include <libsa.h>
#include <sys/reboot.h>
#include <lib/libkern/funcs.h>
#include "cmd.h"
extern char prog_ident[];
extern int debug;
static int Xaddr(void);
static int Xdevice(void);
#ifdef DEBUG
static int Xdebug(void);
#endif
static int Ximage(void);
static int Xhowto(void);
static int Xtty(void);
static int Xtimeout(void);
int Xset(void);
int Xenv(void);
const struct cmd_table cmd_set[] = {
{"addr", CMDT_VAR, Xaddr},
{"howto", CMDT_VAR, Xhowto},
#ifdef DEBUG
{"debug", CMDT_VAR, Xdebug},
#endif
{"device", CMDT_VAR, Xdevice},
{"tty", CMDT_VAR, Xtty},
{"image", CMDT_VAR, Ximage},
{"timeout",CMDT_VAR, Xtimeout},
{NULL,0}
};
#ifdef DEBUG
static int
Xdebug(void)
{
if (cmd.argc != 2)
printf( "o%s\n", debug? "n": "ff" );
else
debug = (cmd.argv[1][0] == '0' ||
(cmd.argv[1][0] == 'o' && cmd.argv[1][1] == 'f'))?
0: 1;
return 0;
}
#endif
static int
Xtimeout(void)
{
if (cmd.argc != 2)
printf( "%d\n", cmd.timeout );
else
cmd.timeout = (int)strtol( cmd.argv[1], (char **)NULL, 0 );
return 0;
}
/* called only w/ no arguments */
int
Xset(void)
{
const struct cmd_table *ct;
printf("%s\n", prog_ident);
for (ct = cmd_set; ct->cmd_name != NULL; ct++) {
printf("%s\t ", ct->cmd_name);
(*ct->cmd_exec)();
}
return 0;
}
static int
Xdevice(void)
{
if (cmd.argc != 2)
printf("%s\n", cmd.bootdev);
else
strlcpy(cmd.bootdev, cmd.argv[1], sizeof(cmd.bootdev));
return 0;
}
static int
Ximage(void)
{
if (cmd.argc != 2)
printf("%s\n", cmd.image);
else
strlcpy(cmd.image, cmd.argv[1], sizeof(cmd.image));
return 0;
}
static int
Xaddr(void)
{
if (cmd.argc != 2)
printf("%p\n", cmd.addr);
else
cmd.addr = (void *)strtol(cmd.argv[1], NULL, 0);
return 0;
}
static int
Xtty(void)
{
dev_t dev;
if (cmd.argc != 2)
printf("%s\n", ttyname(0));
else {
dev = ttydev(cmd.argv[1]);
if (dev == NODEV)
printf("%s not a console device\n", cmd.argv[1]);
else {
printf("switching console to %s\n", cmd.argv[1]);
if (cnset(dev))
printf("%s console not present\n",
cmd.argv[1]);
else
printf("%s\n", prog_ident);
}
}
return 0;
}
static int
Xhowto(void)
{
if (cmd.argc == 1) {
if (cmd.boothowto) {
putchar('-');
if (cmd.boothowto & RB_ASKNAME)
putchar('a');
#ifdef notused
if (cmd.boothowto & RB_HALT)
putchar('b');
#endif
if (cmd.boothowto & RB_CONFIG)
putchar('c');
if (cmd.boothowto & RB_SINGLE)
putchar('s');
if (cmd.boothowto & RB_KDB)
putchar('d');
}
putchar('\n');
} else
bootparse(1);
return 0;
}
int
bootparse(int i)
{
char *cp;
int howto = cmd.boothowto;
for (; i < cmd.argc; i++) {
cp = cmd.argv[i];
if (*cp == '-') {
while (*++cp) {
switch (*cp) {
case 'a':
howto |= RB_ASKNAME;
break;
#ifdef notused
/*
* one day i get the same nice drink i was having
* and figure out what is it supposed to be used for
*/
case 'b':
howto |= RB_HALT;
break;
#endif
case 'c':
howto |= RB_CONFIG;
break;
case 's':
howto |= RB_SINGLE;
break;
case 'd':
howto |= RB_KDB;
break;
default:
printf("howto: bad option: %c\n", *cp);
return 1;
}
}
} else {
printf("boot: illegal argument %s\n", cmd.argv[i]);
return 1;
}
}
cmd.boothowto = howto;
return 0;
}
/*
* maintain environment as a sequence of '\n' separated
* variable definitions in the form <name>=[<value>]
* terminated by the usual '\0'
*/
char *environ;
int
Xenv(void)
{
if (cmd.argc == 1) {
if (environ)
printf(environ);
else
printf("empty\n");
} else {
char *p, *q;
int l;
for (p = environ; p && *p; p = q) {
l = strlen(cmd.argv[1]);
for (q = p; *q != '='; q++)
;
l = max(l, q - p) + 1;
for (q = p; *q != '\n'; q++)
;
if (*q)
q++;
if (!strncmp(p, cmd.argv[1], l)) {
while((*p++ = *q++))
;
p--;
}
}
if (!p)
p = environ = alloc(4096);
snprintf(p, environ + 4096 - p, "%s=%s\n",
cmd.argv[1], (cmd.argc==3?cmd.argv[2]:""));
}
return 0;
}
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