![[BACK]](/icons/back.gif){kind=icon}
Return to vars.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / stand / boot|
Return to vars.c CVS log | Up to [local] / sys / stand / boot |
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: }