-/* Copyright (C) 1991, 92, 95-99, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1991-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
#include <alloca.h>
#include <argz.h>
#include <errno.h>
-#include <bits/libc-lock.h>
+#include <libc-lock.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include "localeinfo.h"
-/* For each category declare two external variables (with weak references):
- extern const struct locale_data *_nl_current_CATEGORY;
- This points to the current locale's in-core data for CATEGORY.
- extern const struct locale_data _nl_C_CATEGORY;
- This contains the built-in "C"/"POSIX" locale's data for CATEGORY.
- Both are weak references; if &_nl_current_CATEGORY is zero,
- then nothing is using the locale data. */
-#define DEFINE_CATEGORY(category, category_name, items, a) \
-extern struct locale_data *_nl_current_##category; \
-extern struct locale_data _nl_C_##category;
-#include "categories.def"
-#undef DEFINE_CATEGORY
-
-/* Array indexed by category of pointers to _nl_current_CATEGORY slots.
- Elements are zero for categories whose data is never used. */
-struct locale_data * *const _nl_current[] =
+#ifdef NL_CURRENT_INDIRECT
+
+/* For each category declare a special external symbol
+ _nl_current_CATEGORY_used with a weak reference.
+ This symbol will is defined in lc-CATEGORY.c and will be linked in
+ if anything uses _nl_current_CATEGORY (also defined in that module).
+ Also use a weak reference for the _nl_current_CATEGORY thread variable. */
+
+# define DEFINE_CATEGORY(category, category_name, items, a) \
+ extern char _nl_current_##category##_used; \
+ weak_extern (_nl_current_##category##_used) \
+ weak_extern (_nl_current_##category)
+# include "categories.def"
+# undef DEFINE_CATEGORY
+
+/* Now define a table of flags based on those special weak symbols' values.
+ _nl_current_used[CATEGORY] will be zero if _nl_current_CATEGORY is not
+ linked in. */
+static char *const _nl_current_used[] =
{
-#define DEFINE_CATEGORY(category, category_name, items, a) \
- [category] = &_nl_current_##category,
-#include "categories.def"
-#undef DEFINE_CATEGORY
- /* We need this additional element to simplify the code. It must
- simply be != NULL. */
- [LC_ALL] = (struct locale_data **) ~0ul
+# define DEFINE_CATEGORY(category, category_name, items, a) \
+ [category] = &_nl_current_##category##_used,
+# include "categories.def"
+# undef DEFINE_CATEGORY
};
-/* Array indexed by category of pointers to _nl_C_CATEGORY slots.
- Elements are zero for categories whose data is never used. */
-struct locale_data *const _nl_C[] =
+# define CATEGORY_USED(category) (_nl_current_used[category] != 0)
+
+#else
+
+/* The shared library always loads all the categories,
+ and the current global settings are kept in _nl_global_locale. */
+
+# define CATEGORY_USED(category) (1)
+
+#endif
+
+
+/* Define an array of category names (also the environment variable names). */
+const struct catnamestr_t _nl_category_names attribute_hidden =
{
#define DEFINE_CATEGORY(category, category_name, items, a) \
- [category] = &_nl_C_##category,
+ category_name,
#include "categories.def"
-#undef DEFINE_CATEGORY
+#undef DEFINE_CATEGORY
};
-
-/* Define an array of category names (also the environment variable names),
- indexed by integral category. */
-const char *const _nl_category_names[] =
+const uint8_t _nl_category_name_idxs[__LC_LAST] attribute_hidden =
{
#define DEFINE_CATEGORY(category, category_name, items, a) \
- [category] = category_name,
+ [category] = offsetof (struct catnamestr_t, CATNAMEMF (__LINE__)),
#include "categories.def"
-#undef DEFINE_CATEGORY
- [LC_ALL] = "LC_ALL"
+#undef DEFINE_CATEGORY
};
+
/* An array of their lengths, for convenience. */
-const size_t _nl_category_name_sizes[] =
+const uint8_t _nl_category_name_sizes[] attribute_hidden =
{
#define DEFINE_CATEGORY(category, category_name, items, a) \
[category] = sizeof (category_name) - 1,
};
+#ifdef NL_CURRENT_INDIRECT
+# define WEAK_POSTLOAD(postload) weak_extern (postload)
+#else
+# define WEAK_POSTLOAD(postload) /* Need strong refs in static linking. */
+#endif
+
/* Declare the postload functions used below. */
#undef NO_POSTLOAD
#define NO_POSTLOAD _nl_postload_ctype /* Harmless thing known to exist. */
#define DEFINE_CATEGORY(category, category_name, items, postload) \
-extern void postload (void);
+extern void postload (void); WEAK_POSTLOAD (postload)
#include "categories.def"
#undef DEFINE_CATEGORY
#undef NO_POSTLOAD
};
-/* Name of current locale for each individual category.
- Each is malloc'd unless it is nl_C_name. */
-static const char *_nl_current_names[] =
- {
-#define DEFINE_CATEGORY(category, category_name, items, a) \
- [category] = _nl_C_name,
-#include "categories.def"
-#undef DEFINE_CATEGORY
- [LC_ALL] = _nl_C_name /* For LC_ALL. */
- };
-
-
/* Lock for protecting global data. */
-__libc_lock_define_initialized (, __libc_setlocale_lock)
+__libc_rwlock_define_initialized (, __libc_setlocale_lock attribute_hidden)
+
+/* Defined in loadmsgcat.c. */
+extern int _nl_msg_cat_cntr;
/* Use this when we come along an error. */
/* Construct a new composite name. */
-static inline char *
-new_composite_name (int category, const char *newnames[__LC_LAST])
+static char *
+new_composite_name (int category, const char **newnames)
{
size_t last_len = 0;
size_t cumlen = 0;
for (i = 0; i < __LC_LAST; ++i)
if (i != LC_ALL)
{
- const char *name = (category == LC_ALL ? newnames[i] :
- category == i ? newnames[0] :
- _nl_current_names[i]);
+ const char *name = (category == LC_ALL ? newnames[i]
+ : category == i ? newnames[0]
+ : _nl_global_locale.__names[i]);
last_len = strlen (name);
cumlen += _nl_category_name_sizes[i] + 1 + last_len + 1;
- if (i > 0 && same && strcmp (name, newnames[0]) != 0)
+ if (same && name != newnames[0] && strcmp (name, newnames[0]) != 0)
same = 0;
}
if (i != LC_ALL)
{
/* Add "CATEGORY=NAME;" to the string. */
- const char *name = (category == LC_ALL ? newnames[i] :
- category == i ? newnames[0] :
- _nl_current_names[i]);
- p = __stpcpy (p, _nl_category_names[i]);
+ const char *name = (category == LC_ALL ? newnames[i]
+ : category == i ? newnames[0]
+ : _nl_global_locale.__names[i]);
+ p = __stpcpy (p, _nl_category_names_get (i));
*p++ = '=';
p = __stpcpy (p, name);
*p++ = ';';
}
-/* Put NAME in _nl_current_names. */
-static inline void
+/* Put NAME in _nl_global_locale.__names. */
+static void
setname (int category, const char *name)
{
- if (_nl_current_names[category] == name)
+ if (_nl_global_locale.__names[category] == name)
return;
- if (category == LC_ALL && _nl_current_names[category] != _nl_C_name)
- free ((char *) _nl_current_names[category]);
+ if (_nl_global_locale.__names[category] != _nl_C_name)
+ free ((char *) _nl_global_locale.__names[category]);
- _nl_current_names[category] = name;
+ _nl_global_locale.__names[category] = name;
}
-
/* Put DATA in *_nl_current[CATEGORY]. */
-static inline void
-setdata (int category, struct locale_data *data)
+static void
+setdata (int category, struct __locale_data *data)
{
- if (_nl_current[category] != NULL)
+ if (CATEGORY_USED (category))
{
- *_nl_current[category] = data;
+ _nl_global_locale.__locales[category] = data;
if (_nl_category_postload[category])
(*_nl_category_postload[category]) ();
}
}
-
char *
setlocale (int category, const char *locale)
{
/* Does user want name of current locale? */
if (locale == NULL)
- return (char *) _nl_current_names[category];
+ return (char *) _nl_global_locale.__names[category];
- if (strcmp (locale, _nl_current_names[category]) == 0)
- /* Changing to the same thing. */
- return (char *) _nl_current_names[category];
+ /* Protect global data. */
+ __libc_rwlock_wrlock (__libc_setlocale_lock);
+
+ if (strcmp (locale, _nl_global_locale.__names[category]) == 0)
+ {
+ /* Changing to the same thing. */
+ __libc_rwlock_unlock (__libc_setlocale_lock);
+
+ return (char *) _nl_global_locale.__names[category];
+ }
/* We perhaps really have to load some data. So we determine the
path in which to look for the data now. The environment variable
`LOCPATH' must only be used when the binary has no SUID or SGID
- bit set. */
+ bit set. If using the default path, we tell _nl_find_locale
+ by passing null and it can check the canonical locale archive. */
locale_path = NULL;
locale_path_len = 0;
locpath_var = getenv ("LOCPATH");
if (locpath_var != NULL && locpath_var[0] != '\0')
- if (__argz_create_sep (locpath_var, ':',
- &locale_path, &locale_path_len) != 0)
- return NULL;
-
- if (__argz_add_sep (&locale_path, &locale_path_len, LOCALEDIR, ':') != 0)
- return NULL;
+ {
+ if (__argz_create_sep (locpath_var, ':',
+ &locale_path, &locale_path_len) != 0
+ || __argz_add_sep (&locale_path, &locale_path_len,
+ _nl_default_locale_path, ':') != 0)
+ {
+ __libc_rwlock_unlock (__libc_setlocale_lock);
+ return NULL;
+ }
+ }
if (category == LC_ALL)
{
composite locale name. This is a semi-colon separated list
of entries of the form `CATEGORY=VALUE'. */
const char *newnames[__LC_LAST];
- struct locale_data *newdata[__LC_LAST];
+ struct __locale_data *newdata[__LC_LAST];
+ /* Copy of the locale argument, for in-place splitting. */
+ char *locale_copy = NULL;
/* Set all name pointers to the argument name. */
for (category = 0; category < __LC_LAST; ++category)
if (category != LC_ALL)
newnames[category] = (char *) locale;
- if (__builtin_expect (strchr (locale, ';') != NULL, 0))
+ if (__glibc_unlikely (strchr (locale, ';') != NULL))
{
/* This is a composite name. Make a copy and split it up. */
- char *np = strdupa (locale);
+ locale_copy = __strdup (locale);
+ if (__glibc_unlikely (locale_copy == NULL))
+ {
+ __libc_rwlock_unlock (__libc_setlocale_lock);
+ return NULL;
+ }
+ char *np = locale_copy;
char *cp;
int cnt;
for (cnt = 0; cnt < __LC_LAST; ++cnt)
if (cnt != LC_ALL
&& (size_t) (cp - np) == _nl_category_name_sizes[cnt]
- && memcmp (np, _nl_category_names[cnt], cp - np) == 0)
+ && (memcmp (np, (_nl_category_names_get (cnt)), cp - np)
+ == 0))
break;
if (cnt == __LC_LAST)
- /* Bogus category name. */
- ERROR_RETURN;
+ {
+ error_return:
+ __libc_rwlock_unlock (__libc_setlocale_lock);
+ free (locale_copy);
+
+ /* Bogus category name. */
+ ERROR_RETURN;
+ }
/* Found the category this clause sets. */
newnames[cnt] = ++cp;
for (cnt = 0; cnt < __LC_LAST; ++cnt)
if (cnt != LC_ALL && newnames[cnt] == locale)
/* The composite name did not specify all categories. */
- ERROR_RETURN;
+ goto error_return;
}
- /* Protect global data. */
- __libc_lock_lock (__libc_setlocale_lock);
-
/* Load the new data for each category. */
while (category-- > 0)
if (category != LC_ALL)
&newnames[category]);
if (newdata[category] == NULL)
- break;
+ {
+#ifdef NL_CURRENT_INDIRECT
+ if (newnames[category] == _nl_C_name)
+ /* Null because it's the weak value of _nl_C_LC_FOO. */
+ continue;
+#endif
+ break;
+ }
- /* We must not simply free a global locale since we have no
- control over the usage. So we mark it as un-deletable. */
+ /* We must not simply free a global locale since we have
+ no control over the usage. So we mark it as
+ un-deletable. And yes, the 'if' is needed, the data
+ might be in read-only memory. */
if (newdata[category]->usage_count != UNDELETABLE)
newdata[category]->usage_count = UNDELETABLE;
+
+ /* Make a copy of locale name. */
+ if (newnames[category] != _nl_C_name)
+ {
+ if (strcmp (newnames[category],
+ _nl_global_locale.__names[category]) == 0)
+ newnames[category] = _nl_global_locale.__names[category];
+ else
+ {
+ newnames[category] = __strdup (newnames[category]);
+ if (newnames[category] == NULL)
+ break;
+ }
+ }
}
/* Create new composite name. */
setname (category, newnames[category]);
}
setname (LC_ALL, composite);
+
+ /* We successfully loaded a new locale. Let the message catalog
+ functions know about this. */
+ ++_nl_msg_cat_cntr;
}
+ else
+ for (++category; category < __LC_LAST; ++category)
+ if (category != LC_ALL && newnames[category] != _nl_C_name
+ && newnames[category] != _nl_global_locale.__names[category])
+ free ((char *) newnames[category]);
/* Critical section left. */
- __libc_lock_unlock (__libc_setlocale_lock);
+ __libc_rwlock_unlock (__libc_setlocale_lock);
- /* Free the resources (the locale path variable. */
+ /* Free the resources. */
free (locale_path);
+ free (locale_copy);
return composite;
}
else
{
- struct locale_data *newdata = NULL;
+ struct __locale_data *newdata = NULL;
const char *newname[1] = { locale };
- /* Protect global data. */
- __libc_lock_lock (__libc_setlocale_lock);
-
- if (_nl_current[category] != NULL)
+ if (CATEGORY_USED (category))
{
/* Only actually load the data if anything will use it. */
newdata = _nl_find_locale (locale_path, locale_path_len, category,
/* We must not simply free a global locale since we have no
control over the usage. So we mark it as un-deletable.
- Note: do not remove the `if', it's necessary to copy with
+ Note: do not remove the `if', it's necessary to cope with
the builtin locale data. */
if (newdata->usage_count != UNDELETABLE)
newdata->usage_count = UNDELETABLE;
}
+ /* Make a copy of locale name. */
+ if (newname[0] != _nl_C_name)
+ {
+ newname[0] = __strdup (newname[0]);
+ if (newname[0] == NULL)
+ goto abort_single;
+ }
+
/* Create new composite name. */
composite = new_composite_name (category, newname);
if (composite == NULL)
{
+ if (newname[0] != _nl_C_name)
+ free ((char *) newname[0]);
+
/* Say that we don't have any data loaded. */
abort_single:
newname[0] = NULL;
}
else
{
- if (_nl_current[category] != NULL)
+ if (CATEGORY_USED (category))
setdata (category, newdata);
setname (category, newname[0]);
setname (LC_ALL, composite);
+
+ /* We successfully loaded a new locale. Let the message catalog
+ functions know about this. */
+ ++_nl_msg_cat_cntr;
}
/* Critical section left. */
- __libc_lock_unlock (__libc_setlocale_lock);
+ __libc_rwlock_unlock (__libc_setlocale_lock);
/* Free the resources (the locale path variable. */
free (locale_path);
return (char *) newname[0];
}
}
+libc_hidden_def (setlocale)
+
+static void
+free_category (int category,
+ struct __locale_data *here, struct __locale_data *c_data)
+{
+ struct loaded_l10nfile *runp = _nl_locale_file_list[category];
+ /* If this category is already "C" don't do anything. */
+ if (here != c_data)
+ {
+ /* We have to be prepared that sometime later we still
+ might need the locale information. */
+ setdata (category, c_data);
+ setname (category, _nl_C_name);
+ }
+
+ while (runp != NULL)
+ {
+ struct loaded_l10nfile *curr = runp;
+ struct __locale_data *data = (struct __locale_data *) runp->data;
+
+ if (data != NULL && data != c_data)
+ _nl_unload_locale (category, data);
+ runp = runp->next;
+ free ((char *) curr->filename);
+ free (curr);
+ }
+}
-static void __attribute__ ((unused))
-free_mem (void)
+/* This is called from iconv/gconv_db.c's free_mem, as locales must
+ be freed before freeing gconv steps arrays. */
+void
+_nl_locale_subfreeres (void)
{
+#ifdef NL_CURRENT_INDIRECT
+ /* We don't use the loop because we want to have individual weak
+ symbol references here. */
+# define DEFINE_CATEGORY(category, category_name, items, a) \
+ if (CATEGORY_USED (category)) \
+ { \
+ extern struct __locale_data _nl_C_##category; \
+ weak_extern (_nl_C_##category) \
+ free_category (category, *_nl_current_##category, &_nl_C_##category); \
+ }
+# include "categories.def"
+# undef DEFINE_CATEGORY
+#else
int category;
for (category = 0; category < __LC_LAST; ++category)
if (category != LC_ALL)
- {
- struct locale_data *here = *_nl_current[category];
-
- /* If this category is already "C" don't do anything. */
- if (here == _nl_C[category])
- continue;
-
- /* We have to be prepared that sometime later me still might
- need the locale information. */
- setdata (category, _nl_C[category]);
- setname (category, _nl_C_name);
-
- _nl_unload_locale (here);
- }
+ free_category (category, _NL_CURRENT_DATA (category),
+ _nl_C_locobj.__locales[category]);
+#endif
setname (LC_ALL, _nl_C_name);
+
+ /* This frees the data structures associated with the locale archive.
+ The locales from the archive are not in the file list, so we have
+ not called _nl_unload_locale on them above. */
+ _nl_archive_subfreeres ();
}
-text_set_element (__libc_subfreeres, free_mem);
projects / thirdparty / glibc.git / blobdiff