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1.1 nbrk 1: /* $OpenBSD: devopen.c,v 1.6 2007/06/27 20:29:38 mk Exp $ */
2:
3: /*
4: * Copyright (c) 1996-1999 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 WARRANTIES
18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19: * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22: * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
25: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26: * THE POSSIBILITY OF SUCH DAMAGE.
27: */
28:
29: #include <sys/param.h>
30: #include <sys/disklabel.h>
31: #include <dev/cons.h>
32: #include "libsa.h"
33: #include <stand/boot/cmd.h>
34:
35: /* XXX use slot for 'rd' for 'hd' pseudo-device */
36: const char bdevs[][4] = {
37: "wd", "", "fd", "", "sd", "st", "cd", "mcd",
38: "", "", "", "", "", "", "", "scd", "", "hd", ""
39:
40: };
41: const int nbdevs = NENTS(bdevs);
42:
43: const char cdevs[][4] = {
44: "cn", "", "", "", "", "", "", "",
45: "", "", "", "", "com"
46: };
47: const int ncdevs = NENTS(cdevs);
48:
49: /* pass dev_t to the open routines */
50: int
51: devopen(struct open_file *f, const char *fname, char **file)
52: {
53: struct devsw *dp = devsw;
54: register int i, rc = 1;
55:
56: *file = (char *)fname;
57:
58: #ifdef DEBUG
59: if (debug)
60: printf("devopen:");
61: #endif
62:
63: for (i = 0; i < ndevs && rc != 0; dp++, i++) {
64: #ifdef DEBUG
65: if (debug)
66: printf(" %s: ", dp->dv_name);
67: #endif
68: if ((rc = (*dp->dv_open)(f, file)) == 0) {
69: f->f_dev = dp;
70: return 0;
71: }
72: #ifdef DEBUG
73: else if (debug)
74: printf("%d", rc);
75: #endif
76:
77: }
78: #ifdef DEBUG
79: if (debug)
80: putchar('\n');
81: #endif
82:
83: if ((f->f_flags & F_NODEV) == 0)
84: f->f_dev = dp;
85:
86: return rc;
87: }
88:
89: void
90: devboot(dev_t bootdev, char *p)
91: {
92: dev_t unit = 0; /* XXX */
93:
94: *p++ = 'h';
95: *p++ = 'd';
96: *p++ = '0' + unit;
97: *p++ = 'a';
98: *p = '\0';
99: }
100:
101: int pch_pos = 0;
102:
103: void
104: putchar(int c)
105: {
106: switch (c) {
107: case '\177': /* DEL erases */
108: cnputc('\b');
109: cnputc(' ');
110: case '\b':
111: cnputc('\b');
112: if (pch_pos)
113: pch_pos--;
114: break;
115: case '\t':
116: do
117: cnputc(' ');
118: while (++pch_pos % 8);
119: break;
120: case '\n':
121: case '\r':
122: cnputc(c);
123: pch_pos=0;
124: break;
125: default:
126: cnputc(c);
127: pch_pos++;
128: break;
129: }
130: }
131:
132: int
133: getchar(void)
134: {
135: register int c = cngetc();
136:
137: if (c == '\r')
138: c = '\n';
139:
140: if ((c < ' ' && c != '\n') || c == '\177')
141: return c;
142:
143: putchar(c);
144:
145: return c;
146: }
147:
148: char ttyname_buf[8];
149:
150: char *
151: ttyname(int fd)
152: {
153: snprintf(ttyname_buf, sizeof ttyname_buf, "%s%d",
154: cdevs[major(cn_tab->cn_dev)], minor(cn_tab->cn_dev));
155:
156: return ttyname_buf;
157: }
158:
159: dev_t
160: ttydev(char *name)
161: {
162: int i, unit = -1;
163: char *no = name + strlen(name) - 1;
164:
165: while (no >= name && *no >= '0' && *no <= '9')
166: unit = (unit < 0 ? 0 : (unit * 10)) + *no-- - '0';
167: if (no < name || unit < 0)
168: return NODEV;
169: for (i = 0; i < ncdevs; i++)
170: if (strncmp(name, cdevs[i], no - name + 1) == 0)
171: return (makedev(i, unit));
172: return NODEV;
173: }