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-rw-r--r--REORG.TODO/locale/loadlocale.c309
1 files changed, 309 insertions, 0 deletions
diff --git a/REORG.TODO/locale/loadlocale.c b/REORG.TODO/locale/loadlocale.c
new file mode 100644
index 0000000000..9bca30463e
--- /dev/null
+++ b/REORG.TODO/locale/loadlocale.c
@@ -0,0 +1,309 @@
+/* Functions to read locale data files.
+   Copyright (C) 1996-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#ifdef _POSIX_MAPPED_FILES
+# include <sys/mman.h>
+#endif
+#include <sys/stat.h>
+
+#include <not-cancel.h>
+#include "localeinfo.h"
+
+
+static const size_t _nl_category_num_items[] =
+{
+#define DEFINE_CATEGORY(category, category_name, items, a) \
+  [category] = _NL_ITEM_INDEX (_NL_NUM_##category),
+#include "categories.def"
+#undef	DEFINE_CATEGORY
+};
+
+
+#define NO_PAREN(arg, rest...) arg, ##rest
+
+#define DEFINE_CATEGORY(category, category_name, items, a) \
+static const enum value_type _nl_value_type_##category[] = { NO_PAREN items };
+#define DEFINE_ELEMENT(element, element_name, optstd, type, rest...) \
+  [_NL_ITEM_INDEX (element)] = type,
+#include "categories.def"
+#undef DEFINE_CATEGORY
+
+static const enum value_type *const _nl_value_types[] =
+{
+#define DEFINE_CATEGORY(category, category_name, items, a) \
+  [category] = _nl_value_type_##category,
+#include "categories.def"
+#undef DEFINE_CATEGORY
+};
+
+
+struct __locale_data *
+internal_function
+_nl_intern_locale_data (int category, const void *data, size_t datasize)
+{
+  const struct
+    {
+      unsigned int magic;
+      unsigned int nstrings;
+      unsigned int strindex[0];
+    } *const filedata = data;
+  struct __locale_data *newdata;
+  size_t cnt;
+
+  if (__builtin_expect (datasize < sizeof *filedata, 0)
+      || __builtin_expect (filedata->magic != LIMAGIC (category), 0))
+    {
+      /* Bad data file.  */
+      __set_errno (EINVAL);
+      return NULL;
+    }
+
+  if (__builtin_expect (filedata->nstrings < _nl_category_num_items[category],
+			0)
+      || (__builtin_expect (sizeof *filedata
+			    + filedata->nstrings * sizeof (unsigned int)
+			    >= datasize, 0)))
+    {
+      /* Insufficient data.  */
+      __set_errno (EINVAL);
+      return NULL;
+    }
+
+  newdata = malloc (sizeof *newdata
+		    + filedata->nstrings * sizeof (union locale_data_value));
+  if (newdata == NULL)
+    return NULL;
+
+  newdata->filedata = (void *) filedata;
+  newdata->filesize = datasize;
+  newdata->private.data = NULL;
+  newdata->private.cleanup = NULL;
+  newdata->usage_count = 0;
+  newdata->use_translit = 0;
+  newdata->nstrings = filedata->nstrings;
+  for (cnt = 0; cnt < newdata->nstrings; ++cnt)
+    {
+      size_t idx = filedata->strindex[cnt];
+      if (__glibc_unlikely (idx > (size_t) newdata->filesize))
+	{
+	puntdata:
+	  free (newdata);
+	  __set_errno (EINVAL);
+	  return NULL;
+	}
+
+      /* Determine the type.  There is one special case: the LC_CTYPE
+	 category can have more elements than there are in the
+	 _nl_value_type_LC_XYZ array.  There are all pointers.  */
+      switch (category)
+	{
+#define CATTEST(cat) \
+	case LC_##cat:						\
+	  if (cnt >= (sizeof (_nl_value_type_LC_##cat)		\
+		      / sizeof (_nl_value_type_LC_##cat[0])))	\
+	    goto puntdata;					\
+	  break
+	  CATTEST (NUMERIC);
+	  CATTEST (TIME);
+	  CATTEST (COLLATE);
+	  CATTEST (MONETARY);
+	  CATTEST (MESSAGES);
+	  CATTEST (PAPER);
+	  CATTEST (NAME);
+	  CATTEST (ADDRESS);
+	  CATTEST (TELEPHONE);
+	  CATTEST (MEASUREMENT);
+	  CATTEST (IDENTIFICATION);
+	default:
+	  assert (category == LC_CTYPE);
+	  break;
+	}
+
+      if ((category == LC_CTYPE
+	   && cnt >= (sizeof (_nl_value_type_LC_CTYPE)
+		      / sizeof (_nl_value_type_LC_CTYPE[0])))
+	  || __builtin_expect (_nl_value_types[category][cnt] != word, 1))
+	newdata->values[cnt].string = newdata->filedata + idx;
+      else
+	{
+	  if (!LOCFILE_ALIGNED_P (idx))
+	    goto puntdata;
+	  newdata->values[cnt].word =
+	    *((const u_int32_t *) (newdata->filedata + idx));
+	}
+    }
+
+  return newdata;
+}
+
+void
+internal_function
+_nl_load_locale (struct loaded_l10nfile *file, int category)
+{
+  int fd;
+  void *filedata;
+  struct stat64 st;
+  struct __locale_data *newdata;
+  int save_err;
+  int alloc = ld_mapped;
+
+  file->decided = 1;
+  file->data = NULL;
+
+  fd = open_not_cancel_2 (file->filename, O_RDONLY | O_CLOEXEC);
+  if (__builtin_expect (fd, 0) < 0)
+    /* Cannot open the file.  */
+    return;
+
+  if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) < 0)
+    {
+    puntfd:
+      close_not_cancel_no_status (fd);
+      return;
+    }
+  if (__glibc_unlikely (S_ISDIR (st.st_mode)))
+    {
+      /* LOCALE/LC_foo is a directory; open LOCALE/LC_foo/SYS_LC_foo
+	   instead.  */
+      char *newp;
+      size_t filenamelen;
+
+      close_not_cancel_no_status (fd);
+
+      filenamelen = strlen (file->filename);
+      newp = (char *) alloca (filenamelen
+			      + 5 + _nl_category_name_sizes[category] + 1);
+      __mempcpy (__mempcpy (__mempcpy (newp, file->filename, filenamelen),
+			    "/SYS_", 5),
+		 _nl_category_names.str + _nl_category_name_idxs[category],
+		 _nl_category_name_sizes[category] + 1);
+
+      fd = open_not_cancel_2 (newp, O_RDONLY | O_CLOEXEC);
+      if (__builtin_expect (fd, 0) < 0)
+	return;
+
+      if (__builtin_expect (__fxstat64 (_STAT_VER, fd, &st), 0) < 0)
+	goto puntfd;
+    }
+
+  /* Map in the file's data.  */
+  save_err = errno;
+#ifdef _POSIX_MAPPED_FILES
+# ifndef MAP_COPY
+  /* Linux seems to lack read-only copy-on-write.  */
+#  define MAP_COPY MAP_PRIVATE
+# endif
+# ifndef MAP_FILE
+  /* Some systems do not have this flag; it is superfluous.  */
+#  define MAP_FILE 0
+# endif
+  filedata = __mmap ((caddr_t) 0, st.st_size,
+		     PROT_READ, MAP_FILE|MAP_COPY, fd, 0);
+  if (__glibc_unlikely (filedata == MAP_FAILED))
+    {
+      filedata = NULL;
+      if (__builtin_expect (errno, ENOSYS) == ENOSYS)
+	{
+#endif	/* _POSIX_MAPPED_FILES */
+	  /* No mmap; allocate a buffer and read from the file.  */
+	  alloc = ld_malloced;
+	  filedata = malloc (st.st_size);
+	  if (filedata != NULL)
+	    {
+	      off_t to_read = st.st_size;
+	      ssize_t nread;
+	      char *p = (char *) filedata;
+	      while (to_read > 0)
+		{
+		  nread = read_not_cancel (fd, p, to_read);
+		  if (__builtin_expect (nread, 1) <= 0)
+		    {
+		      free (filedata);
+		      if (nread == 0)
+			__set_errno (EINVAL); /* Bizarreness going on.  */
+		      goto puntfd;
+		    }
+		  p += nread;
+		  to_read -= nread;
+		}
+	      __set_errno (save_err);
+	    }
+#ifdef _POSIX_MAPPED_FILES
+	}
+    }
+#endif	/* _POSIX_MAPPED_FILES */
+
+  /* We have mapped the data, so we no longer need the descriptor.  */
+  close_not_cancel_no_status (fd);
+
+  if (__glibc_unlikely (filedata == NULL))
+    /* We failed to map or read the data.  */
+    return;
+
+  newdata = _nl_intern_locale_data (category, filedata, st.st_size);
+  if (__glibc_unlikely (newdata == NULL))
+    /* Bad data.  */
+    {
+#ifdef _POSIX_MAPPED_FILES
+      if (alloc == ld_mapped)
+	__munmap ((caddr_t) filedata, st.st_size);
+#endif
+      return;
+    }
+
+  /* _nl_intern_locale_data leaves us these fields to initialize.  */
+  newdata->name = NULL;	/* This will be filled if necessary in findlocale.c. */
+  newdata->alloc = alloc;
+
+  file->data = newdata;
+}
+
+void
+internal_function
+_nl_unload_locale (struct __locale_data *locale)
+{
+  if (locale->private.cleanup)
+    (*locale->private.cleanup) (locale);
+
+  switch (__builtin_expect (locale->alloc, ld_mapped))
+    {
+    case ld_malloced:
+      free ((void *) locale->filedata);
+      break;
+    case ld_mapped:
+#ifdef _POSIX_MAPPED_FILES
+      __munmap ((caddr_t) locale->filedata, locale->filesize);
+      break;
+#endif
+    case ld_archive:		/* Nothing to do.  */
+      break;
+    }
+
+  if (__builtin_expect (locale->alloc, ld_mapped) != ld_archive)
+    free ((char *) locale->name);
+
+  free (locale);
+}