1 /* @(#)isonum.c 1.9 10/12/19 Copyright 2006-2010 J. Schilling */
2 #include <schily/mconfig.h>
3 #ifndef lint
4 static UConst char sccsid[] =
5 "@(#)isonum.c 1.9 10/12/19 Copyright 2006-2010 J. Schilling";
6 #endif
7 /*
8 * Copyright (c) 2006-2010 J. Schilling
9 */
10 /*
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2
13 * as published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License along with
21 * this program; see the file COPYING. If not, write to the Free Software
22 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 */
24
25 #include "mkisofs.h"
26
27
28 EXPORT void set_721 __PR((void *vp, UInt32_t i));
29 EXPORT void set_722 __PR((void *vp, UInt32_t i));
30 EXPORT void set_723 __PR((void *vp, UInt32_t i));
31 EXPORT void set_731 __PR((void *vp, UInt32_t i));
32 EXPORT void set_732 __PR((void *vp, UInt32_t i));
33 EXPORT void set_733 __PR((void *vp, UInt32_t i));
34 EXPORT UInt32_t get_711 __PR((void *vp));
35 EXPORT UInt32_t get_721 __PR((void *vp));
36 EXPORT UInt32_t get_723 __PR((void *vp));
37 EXPORT UInt32_t get_731 __PR((void *vp));
38 EXPORT UInt32_t get_732 __PR((void *vp));
39 EXPORT UInt32_t get_733 __PR((void *vp));
40
41 /*
42 * ISO-9660 7.2.1
43 * Set 16 bit unsigned int, store Least significant byte first
44 */
45 EXPORT void
set_721(vp,i)46 set_721(vp, i)
47 void *vp;
48 UInt32_t i;
49 {
50 Uchar *p = vp;
51
52 p[0] = i & 0xff;
53 p[1] = (i >> 8) & 0xff;
54 }
55
56 /*
57 * ISO-9660 7.2.2
58 * Set 16 bit unsigned int, store Most significant byte first
59 */
60 EXPORT void
set_722(vp,i)61 set_722(vp, i)
62 void *vp;
63 UInt32_t i;
64 {
65 Uchar *p = vp;
66
67 p[0] = (i >> 8) & 0xff;
68 p[1] = i & 0xff;
69 }
70
71 /*
72 * ISO-9660 7.2.3
73 * Set 16 bit unsigned int, store Both Byte orders
74 */
75 EXPORT void
set_723(vp,i)76 set_723(vp, i)
77 void *vp;
78 UInt32_t i;
79 {
80 Uchar *p = vp;
81
82 p[3] = p[0] = i & 0xff;
83 p[2] = p[1] = (i >> 8) & 0xff;
84 }
85
86 /*
87 * ISO-9660 7.3.1
88 * Set 32 bit unsigned int, store Least significant byte first
89 */
90 EXPORT void
set_731(vp,i)91 set_731(vp, i)
92 void *vp;
93 UInt32_t i;
94 {
95 Uchar *p = vp;
96
97 p[0] = i & 0xff;
98 p[1] = (i >> 8) & 0xff;
99 p[2] = (i >> 16) & 0xff;
100 p[3] = (i >> 24) & 0xff;
101 }
102
103 /*
104 * ISO-9660 7.3.2
105 * Set 32 bit unsigned int, store Most significant byte first
106 */
107 EXPORT void
set_732(vp,i)108 set_732(vp, i)
109 void *vp;
110 UInt32_t i;
111 {
112 Uchar *p = vp;
113
114 p[3] = i & 0xff;
115 p[2] = (i >> 8) & 0xff;
116 p[1] = (i >> 16) & 0xff;
117 p[0] = (i >> 24) & 0xff;
118 }
119
120 /*
121 * ISO-9660 7.3.3
122 * Set 32 bit unsigned int, store Both Byte orders
123 */
124 EXPORT void
set_733(vp,i)125 set_733(vp, i)
126 void *vp;
127 UInt32_t i;
128 {
129 Uchar *p = vp;
130
131 p[7] = p[0] = i & 0xff;
132 p[6] = p[1] = (i >> 8) & 0xff;
133 p[5] = p[2] = (i >> 16) & 0xff;
134 p[4] = p[3] = (i >> 24) & 0xff;
135 }
136
137 /*
138 * ISO-9660 7.1.1
139 * Get 8 bit unsigned int
140 */
141 EXPORT UInt32_t
get_711(vp)142 get_711(vp)
143 void *vp;
144 {
145 Uchar *p = vp;
146
147 return (*p & 0xff);
148 }
149
150 /*
151 * ISO-9660 7.2.1
152 * Get 16 bit unsigned int, stored with Least significant byte first
153 */
154 EXPORT UInt32_t
get_721(vp)155 get_721(vp)
156 void *vp;
157 {
158 Uchar *p = vp;
159
160 return ((p[0] & 0xff) | ((p[1] & 0xff) << 8));
161 }
162
163
164 /*
165 * ISO-9660 7.2.3
166 * Get 16 bit unsigned int, stored with Both Byte orders
167 */
168 EXPORT UInt32_t
get_723(vp)169 get_723(vp)
170 void *vp;
171 {
172 Uchar *p = vp;
173 #if 0
174 if (p[0] != p[3] || p[1] != p[2]) {
175 comerrno(EX_BAD, _("Invalid format 7.2.3 number\n"));
176 }
177 #endif
178 return (get_721(p));
179 }
180
181
182 /*
183 * ISO-9660 7.3.1
184 * Get 32 bit unsigned int, stored with Least significant byte first
185 */
186 EXPORT UInt32_t
get_731(vp)187 get_731(vp)
188 void *vp;
189 {
190 Uchar *p = vp;
191
192 return ((p[0] & 0xff)
193 | ((p[1] & 0xff) << 8)
194 | ((p[2] & 0xff) << 16)
195 | ((p[3] & 0xff) << 24));
196 }
197
198 /*
199 * ISO-9660 7.3.2
200 * Get 32 bit unsigned int, stored with Most significant byte first
201 */
202 EXPORT UInt32_t
get_732(vp)203 get_732(vp)
204 void *vp;
205 {
206 Uchar *p = vp;
207
208 return ((p[3] & 0xff)
209 | ((p[2] & 0xff) << 8)
210 | ((p[1] & 0xff) << 16)
211 | ((p[0] & 0xff) << 24));
212 }
213
214 /*
215 * ISO-9660 7.3.3
216 * Get 32 bit unsigned int, stored with Both Byte orders
217 */
218 EXPORT UInt32_t
get_733(vp)219 get_733(vp)
220 void *vp;
221 {
222 Uchar *p = vp;
223
224 return ((p[0] & 0xff)
225 | ((p[1] & 0xff) << 8)
226 | ((p[2] & 0xff) << 16)
227 | ((p[3] & 0xff) << 24));
228 }
229