2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
5 * Copyright 2010 Nexenta Systems, Inc. All rights reserved.
7 * The Regents of the University of California. All rights reserved.
9 * This code is derived from software contributed to Berkeley by
10 * Paul Borman at Krystal Technologies.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 #if defined(LIBC_SCCS) && !defined(lint)
38 static char sccsid[] = "@(#)rune.c 8.1 (Berkeley) 6/4/93";
39 #endif /* LIBC_SCCS and not lint */
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
43 #include "namespace.h"
44 #include <arpa/inet.h>
50 #include <sys/types.h>
55 #include "un-namespace.h"
61 _Read_RuneMagi(const char *fname)
72 _FileRuneEntry *runetype_ext_ranges;
73 _FileRuneEntry *maplower_ext_ranges;
74 _FileRuneEntry *mapupper_ext_ranges;
75 int runetype_ext_len = 0;
78 if ((fd = _open(fname, O_RDONLY)) < 0) {
83 if (_fstat(fd, &sb) < 0) {
89 if ((size_t)sb.st_size < sizeof (_FileRuneLocale)) {
96 fdata = mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
103 frl = (_FileRuneLocale *)(void *)fdata;
104 lastp = fdata + sb.st_size;
108 if (memcmp(frl->magic, _FILE_RUNE_MAGIC_1, sizeof (frl->magic))) {
112 runetype_ext_ranges = (_FileRuneEntry *)variable;
113 variable = runetype_ext_ranges + BSWAP(frl->runetype_ext_nranges);
114 if (variable > lastp) {
118 maplower_ext_ranges = (_FileRuneEntry *)variable;
119 variable = maplower_ext_ranges + BSWAP(frl->maplower_ext_nranges);
120 if (variable > lastp) {
124 mapupper_ext_ranges = (_FileRuneEntry *)variable;
125 variable = mapupper_ext_ranges + BSWAP(frl->mapupper_ext_nranges);
126 if (variable > lastp) {
130 frr = runetype_ext_ranges;
131 for (x = 0; x < BSWAP(frl->runetype_ext_nranges); ++x) {
134 if (BSWAP(frr[x].map) == 0) {
135 int len = BSWAP(frr[x].max) - BSWAP(frr[x].min) + 1;
137 variable = types + len;
138 runetype_ext_len += len;
139 if (variable > lastp) {
145 if ((char *)variable + BSWAP(frl->variable_len) > (char *)lastp) {
150 * Convert from disk format to host format.
152 data = malloc(sizeof(_RuneLocale) +
153 (BSWAP(frl->runetype_ext_nranges) + BSWAP(frl->maplower_ext_nranges) +
154 BSWAP(frl->mapupper_ext_nranges)) * sizeof(_RuneEntry) +
155 runetype_ext_len * sizeof(*rr->__types) +
156 BSWAP(frl->variable_len));
159 munmap(fdata, sb.st_size);
164 rl = (_RuneLocale *)data;
165 rl->__variable = rl + 1;
167 memcpy(rl->__magic, _RUNE_MAGIC_1, sizeof(rl->__magic));
168 memcpy(rl->__encoding, frl->encoding, sizeof(rl->__encoding));
170 rl->__variable_len = BSWAP(frl->variable_len);
171 rl->__runetype_ext.__nranges = BSWAP(frl->runetype_ext_nranges);
172 rl->__maplower_ext.__nranges = BSWAP(frl->maplower_ext_nranges);
173 rl->__mapupper_ext.__nranges = BSWAP(frl->mapupper_ext_nranges);
175 for (x = 0; x < _CACHED_RUNES; ++x) {
176 rl->__runetype[x] = BSWAP(frl->runetype[x]);
177 rl->__maplower[x] = BSWAP(frl->maplower[x]);
178 rl->__mapupper[x] = BSWAP(frl->mapupper[x]);
181 rl->__runetype_ext.__ranges = (_RuneEntry *)rl->__variable;
182 rl->__variable = rl->__runetype_ext.__ranges +
183 rl->__runetype_ext.__nranges;
185 rl->__maplower_ext.__ranges = (_RuneEntry *)rl->__variable;
186 rl->__variable = rl->__maplower_ext.__ranges +
187 rl->__maplower_ext.__nranges;
189 rl->__mapupper_ext.__ranges = (_RuneEntry *)rl->__variable;
190 rl->__variable = rl->__mapupper_ext.__ranges +
191 rl->__mapupper_ext.__nranges;
193 variable = mapupper_ext_ranges + BSWAP(frl->mapupper_ext_nranges);
194 frr = runetype_ext_ranges;
195 rr = rl->__runetype_ext.__ranges;
196 for (x = 0; x < rl->__runetype_ext.__nranges; ++x) {
199 rr[x].__min = BSWAP(frr[x].min);
200 rr[x].__max = BSWAP(frr[x].max);
201 rr[x].__map = BSWAP(frr[x].map);
202 if (rr[x].__map == 0) {
203 int len = rr[x].__max - rr[x].__min + 1;
205 variable = types + len;
206 rr[x].__types = rl->__variable;
207 rl->__variable = rr[x].__types + len;
209 rr[x].__types[len] = types[len];
211 rr[x].__types = NULL;
214 frr = maplower_ext_ranges;
215 rr = rl->__maplower_ext.__ranges;
216 for (x = 0; x < rl->__maplower_ext.__nranges; ++x) {
217 rr[x].__min = BSWAP(frr[x].min);
218 rr[x].__max = BSWAP(frr[x].max);
219 rr[x].__map = BSWAP(frr[x].map);
222 frr = mapupper_ext_ranges;
223 rr = rl->__mapupper_ext.__ranges;
224 for (x = 0; x < rl->__mapupper_ext.__nranges; ++x) {
225 rr[x].__min = BSWAP(frr[x].min);
226 rr[x].__max = BSWAP(frr[x].max);
227 rr[x].__map = BSWAP(frr[x].map);
230 memcpy(rl->__variable, variable, rl->__variable_len);
231 munmap(fdata, sb.st_size);
234 * Go out and zero pointers that should be zero.
236 if (!rl->__variable_len)
237 rl->__variable = NULL;
239 if (!rl->__runetype_ext.__nranges)
240 rl->__runetype_ext.__ranges = NULL;
242 if (!rl->__maplower_ext.__nranges)
243 rl->__maplower_ext.__ranges = NULL;
245 if (!rl->__mapupper_ext.__nranges)
246 rl->__mapupper_ext.__ranges = NULL;
251 munmap(fdata, sb.st_size);