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1.1 ! nbrk 1: /* $OpenBSD: vars.c,v 1.13 2005/05/24 20:48:35 uwe Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1998-2000 Michael Shalayeff
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 19: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 20: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 21: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 22: * OR SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 24: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 25: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 26: * SUCH DAMAGE.
! 27: *
! 28: */
! 29:
! 30: #include <sys/param.h>
! 31: #include <libsa.h>
! 32: #include <sys/reboot.h>
! 33: #include <lib/libkern/funcs.h>
! 34: #include "cmd.h"
! 35:
! 36: extern char prog_ident[];
! 37: extern int debug;
! 38:
! 39: static int Xaddr(void);
! 40: static int Xdevice(void);
! 41: #ifdef DEBUG
! 42: static int Xdebug(void);
! 43: #endif
! 44: static int Ximage(void);
! 45: static int Xhowto(void);
! 46: static int Xtty(void);
! 47: static int Xtimeout(void);
! 48: int Xset(void);
! 49: int Xenv(void);
! 50:
! 51: const struct cmd_table cmd_set[] = {
! 52: {"addr", CMDT_VAR, Xaddr},
! 53: {"howto", CMDT_VAR, Xhowto},
! 54: #ifdef DEBUG
! 55: {"debug", CMDT_VAR, Xdebug},
! 56: #endif
! 57: {"device", CMDT_VAR, Xdevice},
! 58: {"tty", CMDT_VAR, Xtty},
! 59: {"image", CMDT_VAR, Ximage},
! 60: {"timeout",CMDT_VAR, Xtimeout},
! 61: {NULL,0}
! 62: };
! 63:
! 64: #ifdef DEBUG
! 65: static int
! 66: Xdebug(void)
! 67: {
! 68: if (cmd.argc != 2)
! 69: printf( "o%s\n", debug? "n": "ff" );
! 70: else
! 71: debug = (cmd.argv[1][0] == '0' ||
! 72: (cmd.argv[1][0] == 'o' && cmd.argv[1][1] == 'f'))?
! 73: 0: 1;
! 74: return 0;
! 75: }
! 76: #endif
! 77:
! 78: static int
! 79: Xtimeout(void)
! 80: {
! 81: if (cmd.argc != 2)
! 82: printf( "%d\n", cmd.timeout );
! 83: else
! 84: cmd.timeout = (int)strtol( cmd.argv[1], (char **)NULL, 0 );
! 85: return 0;
! 86: }
! 87:
! 88: /* called only w/ no arguments */
! 89: int
! 90: Xset(void)
! 91: {
! 92: const struct cmd_table *ct;
! 93:
! 94: printf("%s\n", prog_ident);
! 95: for (ct = cmd_set; ct->cmd_name != NULL; ct++) {
! 96: printf("%s\t ", ct->cmd_name);
! 97: (*ct->cmd_exec)();
! 98: }
! 99: return 0;
! 100: }
! 101:
! 102: static int
! 103: Xdevice(void)
! 104: {
! 105: if (cmd.argc != 2)
! 106: printf("%s\n", cmd.bootdev);
! 107: else
! 108: strlcpy(cmd.bootdev, cmd.argv[1], sizeof(cmd.bootdev));
! 109: return 0;
! 110: }
! 111:
! 112: static int
! 113: Ximage(void)
! 114: {
! 115: if (cmd.argc != 2)
! 116: printf("%s\n", cmd.image);
! 117: else
! 118: strlcpy(cmd.image, cmd.argv[1], sizeof(cmd.image));
! 119: return 0;
! 120: }
! 121:
! 122: static int
! 123: Xaddr(void)
! 124: {
! 125: if (cmd.argc != 2)
! 126: printf("%p\n", cmd.addr);
! 127: else
! 128: cmd.addr = (void *)strtol(cmd.argv[1], NULL, 0);
! 129: return 0;
! 130: }
! 131:
! 132: static int
! 133: Xtty(void)
! 134: {
! 135: dev_t dev;
! 136:
! 137: if (cmd.argc != 2)
! 138: printf("%s\n", ttyname(0));
! 139: else {
! 140: dev = ttydev(cmd.argv[1]);
! 141: if (dev == NODEV)
! 142: printf("%s not a console device\n", cmd.argv[1]);
! 143: else {
! 144: printf("switching console to %s\n", cmd.argv[1]);
! 145: if (cnset(dev))
! 146: printf("%s console not present\n",
! 147: cmd.argv[1]);
! 148: else
! 149: printf("%s\n", prog_ident);
! 150: }
! 151: }
! 152: return 0;
! 153: }
! 154:
! 155: static int
! 156: Xhowto(void)
! 157: {
! 158: if (cmd.argc == 1) {
! 159: if (cmd.boothowto) {
! 160: putchar('-');
! 161: if (cmd.boothowto & RB_ASKNAME)
! 162: putchar('a');
! 163: #ifdef notused
! 164: if (cmd.boothowto & RB_HALT)
! 165: putchar('b');
! 166: #endif
! 167: if (cmd.boothowto & RB_CONFIG)
! 168: putchar('c');
! 169: if (cmd.boothowto & RB_SINGLE)
! 170: putchar('s');
! 171: if (cmd.boothowto & RB_KDB)
! 172: putchar('d');
! 173: }
! 174: putchar('\n');
! 175: } else
! 176: bootparse(1);
! 177: return 0;
! 178: }
! 179:
! 180: int
! 181: bootparse(int i)
! 182: {
! 183: char *cp;
! 184: int howto = cmd.boothowto;
! 185:
! 186: for (; i < cmd.argc; i++) {
! 187: cp = cmd.argv[i];
! 188: if (*cp == '-') {
! 189: while (*++cp) {
! 190: switch (*cp) {
! 191: case 'a':
! 192: howto |= RB_ASKNAME;
! 193: break;
! 194: #ifdef notused
! 195: /*
! 196: * one day i get the same nice drink i was having
! 197: * and figure out what is it supposed to be used for
! 198: */
! 199: case 'b':
! 200: howto |= RB_HALT;
! 201: break;
! 202: #endif
! 203: case 'c':
! 204: howto |= RB_CONFIG;
! 205: break;
! 206: case 's':
! 207: howto |= RB_SINGLE;
! 208: break;
! 209: case 'd':
! 210: howto |= RB_KDB;
! 211: break;
! 212: default:
! 213: printf("howto: bad option: %c\n", *cp);
! 214: return 1;
! 215: }
! 216: }
! 217: } else {
! 218: printf("boot: illegal argument %s\n", cmd.argv[i]);
! 219: return 1;
! 220: }
! 221: }
! 222: cmd.boothowto = howto;
! 223: return 0;
! 224: }
! 225:
! 226: /*
! 227: * maintain environment as a sequence of '\n' separated
! 228: * variable definitions in the form <name>=[<value>]
! 229: * terminated by the usual '\0'
! 230: */
! 231: char *environ;
! 232:
! 233: int
! 234: Xenv(void)
! 235: {
! 236: if (cmd.argc == 1) {
! 237: if (environ)
! 238: printf("%s", environ);
! 239: else
! 240: printf("empty\n");
! 241: } else {
! 242: char *p, *q;
! 243: int l;
! 244:
! 245: for (p = environ; p && *p; p = q) {
! 246: l = strlen(cmd.argv[1]);
! 247: for (q = p; *q != '='; q++)
! 248: ;
! 249: l = max(l, q - p) + 1;
! 250: for (q = p; *q != '\n'; q++)
! 251: ;
! 252: if (*q)
! 253: q++;
! 254: if (!strncmp(p, cmd.argv[1], l)) {
! 255: while((*p++ = *q++))
! 256: ;
! 257: p--;
! 258: }
! 259: }
! 260: if (!p)
! 261: p = environ = alloc(4096);
! 262: snprintf(p, environ + 4096 - p, "%s=%s\n",
! 263: cmd.argv[1], (cmd.argc==3?cmd.argv[2]:""));
! 264: }
! 265:
! 266: return 0;
! 267: }