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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1989 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1989 The Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)flcopy.c 5.4 (Berkeley) 1/20/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/file.h> | |
45 | #include <stdio.h> | |
46 | #include "pathnames.h" | |
47 | ||
48 | int floppydes; | |
49 | char *flopname = _PATH_FLOPPY; | |
50 | long dsize = 77 * 26 * 128; | |
51 | int hflag; | |
52 | int rflag; | |
53 | ||
54 | main(argc, argv) | |
55 | register char **argv; | |
56 | { | |
57 | extern char *optarg; | |
58 | extern int optind; | |
59 | static char buff[512]; | |
60 | register long count; | |
61 | register startad = -26 * 128; | |
62 | register int n, file; | |
63 | register char *cp; | |
64 | int ch; | |
65 | ||
66 | while ((ch = getopt(argc, argv, "f:hrt:")) != EOF) | |
67 | switch(ch) { | |
68 | case 'f': | |
69 | flopname = optarg; | |
70 | break; | |
71 | case 'h': | |
72 | hflag = 1; | |
73 | printf("Halftime!\n"); | |
74 | if ((file = open("floppy", 0)) < 0) { | |
75 | printf("can't open \"floppy\"\n"); | |
76 | exit(1); | |
77 | } | |
78 | break; | |
79 | case 'r': | |
80 | rflag = 1; | |
81 | break; | |
82 | case 't': | |
83 | dsize = atoi(optarg); | |
84 | if (dsize <= 0 || dsize > 77) { | |
85 | (void)fprintf(stderr, | |
86 | "flcopy: bad number of tracks (0 - 77).\n"); | |
87 | exit(2); | |
88 | } | |
89 | dsize *= 26 * 128; | |
90 | break; | |
91 | case '?': | |
92 | default: | |
93 | usage(); | |
94 | } | |
95 | argc -= optind; | |
96 | argv += optind; | |
97 | ||
98 | if (!hflag) { | |
99 | file = open("floppy", O_RDWR|O_CREAT|O_TRUNC, 0666); | |
100 | if (file < 0) { | |
101 | printf("can't open \"floppy\"\n"); | |
102 | exit(1); | |
103 | } | |
104 | for (count = dsize; count > 0 ; count -= 512) { | |
105 | n = count > 512 ? 512 : count; | |
106 | lread(startad, n, buff); | |
107 | write(file, buff, n); | |
108 | startad += 512; | |
109 | } | |
110 | } | |
111 | if (rflag) | |
112 | exit(0); | |
113 | printf("Change Floppy, Hit return when done.\n"); | |
114 | gets(buff); | |
115 | lseek(file, 0, 0); | |
116 | count = dsize; | |
117 | startad = -26 * 128; | |
118 | for ( ; count > 0 ; count -= 512) { | |
119 | n = count > 512 ? 512 : count; | |
120 | read(file, buff, n); | |
121 | lwrite(startad, n, buff); | |
122 | startad += 512; | |
123 | } | |
124 | exit(0); | |
125 | } | |
126 | ||
127 | rt_init() | |
128 | { | |
129 | static initized = 0; | |
130 | int mode = 2; | |
131 | ||
132 | if (initized) | |
133 | return; | |
134 | if (rflag) | |
135 | mode = 0; | |
136 | initized = 1; | |
137 | if ((floppydes = open(flopname, mode)) < 0) { | |
138 | printf("Floppy open failed\n"); | |
139 | exit(1); | |
140 | } | |
141 | } | |
142 | ||
143 | /* | |
144 | * Logical to physical adress translation | |
145 | */ | |
146 | long | |
147 | trans(logical) | |
148 | register int logical; | |
149 | { | |
150 | register int sector, bytes, track; | |
151 | ||
152 | logical += 26 * 128; | |
153 | bytes = (logical & 127); | |
154 | logical >>= 7; | |
155 | sector = logical % 26; | |
156 | if (sector >= 13) | |
157 | sector = sector*2 +1; | |
158 | else | |
159 | sector *= 2; | |
160 | sector += 26 + ((track = (logical / 26)) - 1) * 6; | |
161 | sector %= 26; | |
162 | return ((((track *26) + sector) << 7) + bytes); | |
163 | } | |
164 | ||
165 | lread(startad, count, obuff) | |
166 | register startad, count; | |
167 | register char *obuff; | |
168 | { | |
169 | long trans(); | |
170 | extern floppydes; | |
171 | ||
172 | rt_init(); | |
173 | while ((count -= 128) >= 0) { | |
174 | lseek(floppydes, trans(startad), 0); | |
175 | read(floppydes, obuff, 128); | |
176 | obuff += 128; | |
177 | startad += 128; | |
178 | } | |
179 | } | |
180 | ||
181 | lwrite(startad, count, obuff) | |
182 | register startad, count; | |
183 | register char *obuff; | |
184 | { | |
185 | long trans(); | |
186 | extern floppydes; | |
187 | ||
188 | rt_init(); | |
189 | while ((count -= 128) >= 0) { | |
190 | lseek(floppydes, trans(startad), 0); | |
191 | write(floppydes, obuff, 128); | |
192 | obuff += 128; | |
193 | startad += 128; | |
194 | } | |
195 | } | |
196 | ||
197 | usage() | |
198 | { | |
199 | (void)fprintf(stderr, "usage: flcopy [-hr] [-f file] [-t ntracks]\n"); | |
200 | exit(1); | |
201 | } |