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ce4d8b66 | 1 | /* Functions to read locale data files. |
d4697bc9 | 2 | Copyright (C) 1996-2014 Free Software Foundation, Inc. |
c84142e8 | 3 | This file is part of the GNU C Library. |
4b10dd6c | 4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. |
933e73fa | 5 | |
c84142e8 | 6 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
933e73fa | 10 | |
c84142e8 UD |
11 | The GNU C Library is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
933e73fa | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
933e73fa | 19 | |
e43e0dd6 | 20 | #include <assert.h> |
933e73fa RM |
21 | #include <errno.h> |
22 | #include <fcntl.h> | |
3e154a6f | 23 | #include <locale.h> |
933e73fa RM |
24 | #include <stdlib.h> |
25 | #include <string.h> | |
7a12c6bb | 26 | #include <unistd.h> |
b6aa34eb UD |
27 | #ifdef _POSIX_MAPPED_FILES |
28 | # include <sys/mman.h> | |
29 | #endif | |
7a12c6bb RM |
30 | #include <sys/stat.h> |
31 | ||
72ef277e | 32 | #include <not-cancel.h> |
933e73fa RM |
33 | #include "localeinfo.h" |
34 | ||
7a12c6bb RM |
35 | |
36 | static const size_t _nl_category_num_items[] = | |
19bc17a9 | 37 | { |
4b10dd6c | 38 | #define DEFINE_CATEGORY(category, category_name, items, a) \ |
19bc17a9 | 39 | [category] = _NL_ITEM_INDEX (_NL_NUM_##category), |
933e73fa RM |
40 | #include "categories.def" |
41 | #undef DEFINE_CATEGORY | |
19bc17a9 RM |
42 | }; |
43 | ||
44 | ||
45 | #define NO_PAREN(arg, rest...) arg, ##rest | |
46 | ||
4b10dd6c | 47 | #define DEFINE_CATEGORY(category, category_name, items, a) \ |
19bc17a9 RM |
48 | static const enum value_type _nl_value_type_##category[] = { NO_PAREN items }; |
49 | #define DEFINE_ELEMENT(element, element_name, optstd, type, rest...) \ | |
50 | [_NL_ITEM_INDEX (element)] = type, | |
51 | #include "categories.def" | |
52 | #undef DEFINE_CATEGORY | |
53 | ||
aa87e915 | 54 | static const enum value_type *const _nl_value_types[] = |
19bc17a9 | 55 | { |
4b10dd6c | 56 | #define DEFINE_CATEGORY(category, category_name, items, a) \ |
19bc17a9 RM |
57 | [category] = _nl_value_type_##category, |
58 | #include "categories.def" | |
59 | #undef DEFINE_CATEGORY | |
60 | }; | |
61 | ||
933e73fa | 62 | |
f095bb72 | 63 | struct __locale_data * |
cb09a2cd RM |
64 | internal_function |
65 | _nl_intern_locale_data (int category, const void *data, size_t datasize) | |
933e73fa | 66 | { |
cb09a2cd | 67 | const struct |
933e73fa RM |
68 | { |
69 | unsigned int magic; | |
70 | unsigned int nstrings; | |
71 | unsigned int strindex[0]; | |
cb09a2cd | 72 | } *const filedata = data; |
f095bb72 | 73 | struct __locale_data *newdata; |
cb09a2cd RM |
74 | size_t cnt; |
75 | ||
76 | if (__builtin_expect (datasize < sizeof *filedata, 0) | |
77 | || __builtin_expect (filedata->magic != LIMAGIC (category), 0)) | |
78 | { | |
79 | /* Bad data file. */ | |
80 | __set_errno (EINVAL); | |
81 | return NULL; | |
82 | } | |
83 | ||
84 | if (__builtin_expect (filedata->nstrings < _nl_category_num_items[category], | |
85 | 0) | |
86 | || (__builtin_expect (sizeof *filedata | |
87 | + filedata->nstrings * sizeof (unsigned int) | |
88 | >= datasize, 0))) | |
89 | { | |
90 | /* Insufficient data. */ | |
91 | __set_errno (EINVAL); | |
92 | return NULL; | |
93 | } | |
94 | ||
95 | newdata = malloc (sizeof *newdata | |
96 | + filedata->nstrings * sizeof (union locale_data_value)); | |
97 | if (newdata == NULL) | |
98 | return NULL; | |
99 | ||
100 | newdata->filedata = (void *) filedata; | |
101 | newdata->filesize = datasize; | |
df9f41c9 RM |
102 | newdata->private.data = NULL; |
103 | newdata->private.cleanup = NULL; | |
cb09a2cd RM |
104 | newdata->usage_count = 0; |
105 | newdata->use_translit = 0; | |
106 | newdata->nstrings = filedata->nstrings; | |
107 | for (cnt = 0; cnt < newdata->nstrings; ++cnt) | |
108 | { | |
109 | size_t idx = filedata->strindex[cnt]; | |
a1ffb40e | 110 | if (__glibc_unlikely (idx > (size_t) newdata->filesize)) |
cb09a2cd RM |
111 | { |
112 | puntdata: | |
113 | free (newdata); | |
114 | __set_errno (EINVAL); | |
115 | return NULL; | |
116 | } | |
fe6ce170 UD |
117 | |
118 | /* Determine the type. There is one special case: the LC_CTYPE | |
119 | category can have more elements than there are in the | |
120 | _nl_value_type_LC_XYZ array. There are all pointers. */ | |
121 | switch (category) | |
122 | { | |
123 | #define CATTEST(cat) \ | |
124 | case LC_##cat: \ | |
125 | assert (cnt < (sizeof (_nl_value_type_LC_##cat) \ | |
126 | / sizeof (_nl_value_type_LC_##cat[0]))); \ | |
127 | break | |
128 | CATTEST (NUMERIC); | |
129 | CATTEST (TIME); | |
130 | CATTEST (COLLATE); | |
131 | CATTEST (MONETARY); | |
132 | CATTEST (MESSAGES); | |
133 | CATTEST (PAPER); | |
134 | CATTEST (NAME); | |
135 | CATTEST (ADDRESS); | |
136 | CATTEST (TELEPHONE); | |
137 | CATTEST (MEASUREMENT); | |
138 | CATTEST (IDENTIFICATION); | |
139 | default: | |
140 | assert (category == LC_CTYPE); | |
141 | break; | |
142 | } | |
143 | ||
144 | if ((category == LC_CTYPE | |
145 | && cnt >= (sizeof (_nl_value_type_LC_CTYPE) | |
146 | / sizeof (_nl_value_type_LC_CTYPE[0]))) | |
147 | || __builtin_expect (_nl_value_types[category][cnt] != word, 1)) | |
148 | newdata->values[cnt].string = newdata->filedata + idx; | |
149 | else | |
cb09a2cd | 150 | { |
7602d070 | 151 | if (!LOCFILE_ALIGNED_P (idx)) |
cb09a2cd RM |
152 | goto puntdata; |
153 | newdata->values[cnt].word = | |
154 | *((const u_int32_t *) (newdata->filedata + idx)); | |
155 | } | |
cb09a2cd RM |
156 | } |
157 | ||
158 | return newdata; | |
159 | } | |
160 | ||
161 | void | |
162 | internal_function | |
163 | _nl_load_locale (struct loaded_l10nfile *file, int category) | |
164 | { | |
165 | int fd; | |
166 | void *filedata; | |
8edf6e0d | 167 | struct stat64 st; |
f095bb72 | 168 | struct __locale_data *newdata; |
7a12c6bb | 169 | int save_err; |
cb09a2cd | 170 | int alloc = ld_mapped; |
933e73fa | 171 | |
7a12c6bb RM |
172 | file->decided = 1; |
173 | file->data = NULL; | |
174 | ||
d62a8200 | 175 | fd = open_not_cancel_2 (file->filename, O_RDONLY | O_CLOEXEC); |
3a31f6f4 | 176 | if (__builtin_expect (fd, 0) < 0) |
7a12c6bb RM |
177 | /* Cannot open the file. */ |
178 | return; | |
179 | ||
8edf6e0d | 180 | if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) < 0) |
cb09a2cd RM |
181 | { |
182 | puntfd: | |
72ef277e | 183 | close_not_cancel_no_status (fd); |
cb09a2cd RM |
184 | return; |
185 | } | |
a1ffb40e | 186 | if (__glibc_unlikely (S_ISDIR (st.st_mode))) |
933e73fa | 187 | { |
7a12c6bb | 188 | /* LOCALE/LC_foo is a directory; open LOCALE/LC_foo/SYS_LC_foo |
f095bb72 | 189 | instead. */ |
7a12c6bb | 190 | char *newp; |
b6aa34eb | 191 | size_t filenamelen; |
036cc82f | 192 | |
72ef277e | 193 | close_not_cancel_no_status (fd); |
7a12c6bb | 194 | |
b6aa34eb UD |
195 | filenamelen = strlen (file->filename); |
196 | newp = (char *) alloca (filenamelen | |
7a12c6bb | 197 | + 5 + _nl_category_name_sizes[category] + 1); |
b6aa34eb UD |
198 | __mempcpy (__mempcpy (__mempcpy (newp, file->filename, filenamelen), |
199 | "/SYS_", 5), | |
9446614c | 200 | _nl_category_names.str + _nl_category_name_idxs[category], |
b6aa34eb | 201 | _nl_category_name_sizes[category] + 1); |
7a12c6bb | 202 | |
d62a8200 | 203 | fd = open_not_cancel_2 (newp, O_RDONLY | O_CLOEXEC); |
3a31f6f4 | 204 | if (__builtin_expect (fd, 0) < 0) |
7a12c6bb RM |
205 | return; |
206 | ||
8edf6e0d | 207 | if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) < 0) |
7a12c6bb | 208 | goto puntfd; |
933e73fa RM |
209 | } |
210 | ||
7a12c6bb RM |
211 | /* Map in the file's data. */ |
212 | save_err = errno; | |
b6aa34eb UD |
213 | #ifdef _POSIX_MAPPED_FILES |
214 | # ifndef MAP_COPY | |
7a12c6bb | 215 | /* Linux seems to lack read-only copy-on-write. */ |
b6aa34eb UD |
216 | # define MAP_COPY MAP_PRIVATE |
217 | # endif | |
218 | # ifndef MAP_FILE | |
7a12c6bb | 219 | /* Some systems do not have this flag; it is superfluous. */ |
b6aa34eb UD |
220 | # define MAP_FILE 0 |
221 | # endif | |
cb09a2cd RM |
222 | filedata = __mmap ((caddr_t) 0, st.st_size, |
223 | PROT_READ, MAP_FILE|MAP_COPY, fd, 0); | |
a1ffb40e | 224 | if (__glibc_unlikely (filedata == MAP_FAILED)) |
7a12c6bb | 225 | { |
8b2f25c2 | 226 | filedata = NULL; |
3a31f6f4 | 227 | if (__builtin_expect (errno, ENOSYS) == ENOSYS) |
7a12c6bb | 228 | { |
b6aa34eb | 229 | #endif /* _POSIX_MAPPED_FILES */ |
7a12c6bb | 230 | /* No mmap; allocate a buffer and read from the file. */ |
cb09a2cd | 231 | alloc = ld_malloced; |
7a12c6bb RM |
232 | filedata = malloc (st.st_size); |
233 | if (filedata != NULL) | |
234 | { | |
235 | off_t to_read = st.st_size; | |
236 | ssize_t nread; | |
237 | char *p = (char *) filedata; | |
238 | while (to_read > 0) | |
239 | { | |
72ef277e | 240 | nread = read_not_cancel (fd, p, to_read); |
3a31f6f4 | 241 | if (__builtin_expect (nread, 1) <= 0) |
7a12c6bb RM |
242 | { |
243 | free (filedata); | |
244 | if (nread == 0) | |
c4029823 | 245 | __set_errno (EINVAL); /* Bizarreness going on. */ |
7a12c6bb RM |
246 | goto puntfd; |
247 | } | |
248 | p += nread; | |
249 | to_read -= nread; | |
250 | } | |
cb09a2cd | 251 | __set_errno (save_err); |
7a12c6bb | 252 | } |
b6aa34eb | 253 | #ifdef _POSIX_MAPPED_FILES |
7a12c6bb | 254 | } |
7a12c6bb | 255 | } |
b6aa34eb | 256 | #endif /* _POSIX_MAPPED_FILES */ |
933e73fa | 257 | |
cb09a2cd | 258 | /* We have mapped the data, so we no longer need the descriptor. */ |
72ef277e | 259 | close_not_cancel_no_status (fd); |
cb09a2cd | 260 | |
a1ffb40e | 261 | if (__glibc_unlikely (filedata == NULL)) |
cb09a2cd RM |
262 | /* We failed to map or read the data. */ |
263 | return; | |
264 | ||
265 | newdata = _nl_intern_locale_data (category, filedata, st.st_size); | |
a1ffb40e | 266 | if (__glibc_unlikely (newdata == NULL)) |
cb09a2cd | 267 | /* Bad data. */ |
933e73fa | 268 | { |
b6aa34eb | 269 | #ifdef _POSIX_MAPPED_FILES |
cb09a2cd RM |
270 | if (alloc == ld_mapped) |
271 | __munmap ((caddr_t) filedata, st.st_size); | |
b6aa34eb | 272 | #endif |
4a33c2f5 | 273 | return; |
933e73fa RM |
274 | } |
275 | ||
cb09a2cd | 276 | /* _nl_intern_locale_data leaves us these fields to initialize. */ |
7a12c6bb | 277 | newdata->name = NULL; /* This will be filled if necessary in findlocale.c. */ |
cb09a2cd | 278 | newdata->alloc = alloc; |
933e73fa | 279 | |
7a12c6bb | 280 | file->data = newdata; |
933e73fa | 281 | } |
a5a0310d UD |
282 | |
283 | void | |
cb09a2cd | 284 | internal_function |
f095bb72 | 285 | _nl_unload_locale (struct __locale_data *locale) |
a5a0310d | 286 | { |
df9f41c9 RM |
287 | if (locale->private.cleanup) |
288 | (*locale->private.cleanup) (locale); | |
289 | ||
cb09a2cd RM |
290 | switch (__builtin_expect (locale->alloc, ld_mapped)) |
291 | { | |
292 | case ld_malloced: | |
293 | free ((void *) locale->filedata); | |
294 | break; | |
295 | case ld_mapped: | |
b6aa34eb | 296 | #ifdef _POSIX_MAPPED_FILES |
cb09a2cd RM |
297 | __munmap ((caddr_t) locale->filedata, locale->filesize); |
298 | break; | |
b6aa34eb | 299 | #endif |
cb09a2cd RM |
300 | case ld_archive: /* Nothing to do. */ |
301 | break; | |
302 | } | |
303 | ||
304 | if (__builtin_expect (locale->alloc, ld_mapped) != ld_archive) | |
305 | free ((char *) locale->name); | |
a5a0310d UD |
306 | |
307 | free (locale); | |
308 | } |