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1.1 nbrk 1: /* $OpenBSD: unixdev.c,v 1.7 2003/08/11 06:23:09 deraadt Exp $ */
2:
3: /*
4: * Copyright (c) 1996-1998 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 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 <sys/types.h>
32: #include <sys/time.h>
33: #include <sys/syscall.h>
34: #define open uopen
35: #include <sys/fcntl.h>
36: #include <dev/cons.h>
37: #undef open
38: #include "libsa.h"
39: #include <lib/libsa/unixdev.h>
40:
41: int
42: unixstrategy(void *devdata, int rw, daddr_t blk, size_t size, void *buf,
43: size_t *rsize)
44: {
45: int rc = 0;
46:
47: #ifdef UNIX_DEBUG
48: printf("unixstrategy: %s %d bytes @ %d\n",
49: (rw==F_READ?"reading":"writing"), size, blk);
50: #endif
51: if ((rc = ulseek((int)devdata, blk * DEV_BSIZE, 0)) >= 0)
52: rc = (rw==F_READ) ? uread((int)devdata, buf, size) :
53: uwrite((int)devdata, buf, size);
54:
55: if (rc >= 0) {
56: *rsize = (size_t)rc;
57: rc = 0;
58: } else
59: rc = errno;
60:
61: return rc;
62: }
63:
64: int
65: unixopen(struct open_file *f, ...)
66: {
67: char **file, *p = NULL;
68: va_list ap;
69: int fd;
70:
71: va_start(ap, f);
72: file = va_arg(ap, char **);
73: va_end(ap);
74:
75: #ifdef UNIX_DEBUG
76: printf("unixopen: %s\n", *file);
77: #endif
78:
79: if (strncmp("/dev/", *file, 5) == 0) {
80: /* p = strchr(p + 5, '/') */
81: for (p = *file + 5; *p != '\0' && *p != '/'; p++)
82: ;
83: if (*p == '/')
84: *p = '\0';
85: }
86:
87: f->f_devdata = (void *)(fd = uopen(*file, O_RDWR, 0));
88:
89: *file = p;
90: if (p != NULL)
91: *p = '/';
92:
93: return fd < 0 ? -1 : 0;
94: }
95:
96: int
97: unixclose(struct open_file *f)
98: {
99: return uclose((int)f->f_devdata);
100: }
101:
102: int
103: unixioctl(struct open_file *f, u_long cmd, void *data)
104: {
105: return uioctl((int)f->f_devdata, cmd, data);
106: }
107:
108: off_t
109: ulseek(int fd, off_t off, int wh)
110: {
111: return __syscall((quad_t)SYS_lseek, fd, 0, off, wh);
112: }
113:
114:
115: void
116: unix_probe(struct consdev *cn)
117: {
118: cn->cn_pri = CN_INTERNAL;
119: cn->cn_dev = makedev(0,0);
120: printf("ux%d ", minor(cn->cn_dev));
121: }
122:
123: void
124: unix_init(struct consdev *cn)
125: {
126: }
127:
128: void
129: unix_putc(dev_t dev, int c)
130: {
131: uwrite(1, &c, 1);
132: }
133:
134: int
135: unix_getc(dev_t dev)
136: {
137: if (dev & 0x80) {
138: struct timeval tv;
139: fd_set fdset;
140: int rc;
141:
142: tv.tv_sec = 0;
143: tv.tv_usec = 100000;
144: FD_ZERO(&fdset);
145: FD_SET(0, &fdset);
146:
147: if ((rc = syscall(SYS_select, 1, &fdset, NULL, NULL, &tv)) <= 0)
148: return 0;
149: else
150: return 1;
151: } else {
152: char c;
153:
154: return uread(0, &c, 1)<1? -1: c;
155: }
156: }
157:
158: time_t
159: getsecs(void)
160: {
161: return 1;
162: }
163:
164: void
165: time_print(void)
166: {
167: }
168:
169: void
170: atexit(void)
171: {
172: }
173:
174: int
175: cnspeed(dev_t dev, int sp)
176: {
177: return 9600;
178: }
179:
180: void
181: __main(void)
182: {
183: }