aboutsummaryrefslogtreecommitdiff
path: root/locale/programs/locarchive.c
blob: 861dd5bd684bc54cde29addc4a7651b82a7f540e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
/* Copyright (C) 2002 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.

   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <assert.h>
#include <dirent.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <inttypes.h>
#include <libintl.h>
#include <locale.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/param.h>
#include <sys/stat.h>

#include "../../crypt/md5.h"
#include "../localeinfo.h"
#include "../locarchive.h"
#include "simple-hash.h"
#include "localedef.h"


static const char archivefname[] = LOCALEDIR "/locale-archive";

static const char *locnames[] =
  {
#define DEFINE_CATEGORY(category, category_name, items, a) \
  [category] = category_name,
#include "categories.def"
#undef  DEFINE_CATEGORY
  };


/* Size of the initial archive header.  */
#define INITIAL_NUM_NANES	450
#define INITIAL_SIZE_STRINGS	3500
#define INITIAL_NUM_LOCREC	350
#define INITIAL_NUM_SUMS	2000


static void
create_archive (struct locarhandle *ah)
{
  int fd;
  char fname[] = LOCALEDIR "/locale-archive.XXXXXX";
  struct locarhead head;
  void *p;
  size_t total;

  /* Create a temporary file in the correct directory.  */
  fd = mkstemp (fname);
  if (fd == -1)
    error (EXIT_FAILURE, errno, _("cannot create temporary file"));

  /* Create the initial content of the archive.  */
  head.magic = AR_MAGIC;
  head.namehash_offset = sizeof (struct locarhead);
  head.namehash_used = 0;
  head.namehash_size = next_prime (INITIAL_NUM_NANES);

  head.string_offset = (head.namehash_offset
			+ head.namehash_size * sizeof (struct namehashent));
  head.string_used = 0;
  head.string_size = INITIAL_SIZE_STRINGS;

  head.locrectab_offset = head.string_offset + head.string_size;
  head.locrectab_used = 0;
  head.locrectab_size = INITIAL_NUM_LOCREC;

  head.sumhash_offset = (head.locrectab_offset
			 + head.locrectab_size * sizeof (struct locrecent));
  head.sumhash_used = 0;
  head.sumhash_size = next_prime (INITIAL_NUM_SUMS);

  total = head.sumhash_offset + head.sumhash_size * sizeof (struct sumhashent);

  /* Write out the header and create room for the other data structures.  */
  if (TEMP_FAILURE_RETRY (write (fd, &head, sizeof (head))) != sizeof (head))
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval, _("cannot initialize archive file"));
    }

  if (ftruncate64 (fd, total) != 0)
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval, _("cannot resize archive file"));
    }

  /* Map the header and all the administration data structures.  */
  p = mmap64 (NULL, total, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
  if (p == MAP_FAILED)
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval, _("cannot map archive header"));
    }

  /* Now try to rename it.  We don't use the rename function since
     this would overwrite a file which has been created in
     parallel.  */
  if (link (fname, archivefname) == -1)
    {
      int errval = errno;

      /* We cannot use the just created file.  */
      close (fd);
      unlink (fname);

      if (errval == EEXIST)
	{
	  /* There is already an archive.  Must have been a localedef run
	     which happened in parallel.  Simply open this file then.  */
	  open_archive (ah);
	  return;
	}

      error (EXIT_FAILURE, errval, _("failed to create new locale archive"));
    }

  /* Remove the temporary name.  */
  unlink (fname);

  /* Make the file globally readable.  */
  if (fchmod (fd, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) == -1)
    {
      int errval = errno;
      unlink (archivefname);
      error (EXIT_FAILURE, errval,
	     _("cannot change mode of new locale archive"));
    }

  ah->fd = fd;
  ah->addr = p;
  ah->len = total;
}


static void
enlarge_archive (struct locarhandle *ah, const struct locarhead *head)
{
  struct stat64 st;
  int fd;
  char fname[] = LOCALEDIR "/locale-archive.XXXXXX";
  struct locarhead newhead;
  size_t total;
  void *p;
  unsigned int cnt;
  struct namehashent *oldnamehashtab;
  struct locrecent *oldlocrectab;
  struct locarhandle new_ah;

  /* Not all of the old file has to be mapped.  Change this now this
     we will have to access the whole content.  */
  if (fstat64 (ah->fd, &st) != 0
      || (ah->addr = mmap64 (NULL, st.st_size, PROT_READ | PROT_WRITE,
			     MAP_SHARED, ah->fd, 0)) == MAP_FAILED)
    error (EXIT_FAILURE, errno, _("cannot map locale archive file"));
  ah->len = st.st_size;

  /* Create a temporary file in the correct directory.  */
  fd = mkstemp (fname);
  if (fd == -1)
    error (EXIT_FAILURE, errno, _("cannot create temporary file"));

  /* Copy the existing head information.  */
  newhead = *head;

  /* Create the new archive header.  The sizes of the various tables
     should be double from what is currently used.  */
  newhead.namehash_size = MAX (next_prime (2 * newhead.namehash_used),
			       newhead.namehash_size);
  printf ("name: size: %u, used: %d, new: size: %u\n",
	  head->namehash_size, head->namehash_used, newhead.namehash_size);

  newhead.string_offset = (newhead.namehash_offset
			   + (newhead.namehash_size
			      * sizeof (struct namehashent)));
  newhead.string_size = MAX (2 * newhead.string_used, newhead.string_size);

  newhead.locrectab_offset = newhead.string_offset + newhead.string_size;
  newhead.locrectab_size = MAX (2 * newhead.locrectab_used,
				newhead.locrectab_size);

  newhead.sumhash_offset = (newhead.locrectab_offset
			    + (newhead.locrectab_size
			       * sizeof (struct locrecent)));
  newhead.sumhash_size = MAX (next_prime (2 * newhead.sumhash_used),
			      newhead.sumhash_size);

  total = (newhead.sumhash_offset
	   + newhead.sumhash_size * sizeof (struct sumhashent));

  /* The new file is empty now.  */
  newhead.namehash_used = 0;
  newhead.string_used = 0;
  newhead.locrectab_used = 0;
  newhead.sumhash_used = 0;

  /* Write out the header and create room for the other data structures.  */
  if (TEMP_FAILURE_RETRY (write (fd, &newhead, sizeof (newhead)))
      != sizeof (newhead))
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval, _("cannot initialize archive file"));
    }

  if (ftruncate64 (fd, total) != 0)
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval, _("cannot resize archive file"));
    }

  /* Map the header and all the administration data structures.  */
  p = mmap64 (NULL, total, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
  if (p == MAP_FAILED)
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval, _("cannot map archive header"));
    }

  /* Lock the new file.  */
  if (lockf64 (fd, F_LOCK, total) != 0)
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval, _("cannot lock new archive"));
    }

  new_ah.len = total;
  new_ah.addr = p;
  new_ah.fd = fd;

  /* Walk through the hash name hash table to find out what data is
     still referenced and transfer it into the new file.  */
  oldnamehashtab = (struct namehashent *) ((char *) ah->addr
					   + head->namehash_offset);
  oldlocrectab = (struct locrecent *) ((char *) ah->addr
				       + head->locrectab_offset);
  for (cnt = 0; cnt < head->namehash_size; ++cnt)
    if (oldnamehashtab[cnt].locrec_offset != 0)
      {
	/* Insert this entry in the new hash table.  */
	locale_data_t old_data;
	unsigned int idx;
	struct locrecent *oldlocrec;

	oldlocrec = (struct locrecent *) ((char *) ah->addr
					  + oldnamehashtab[cnt].locrec_offset);

	for (idx = 0; idx < __LC_LAST; ++idx)
	  if (idx != LC_ALL)
	    {
	      old_data[idx].size = oldlocrec->record[idx].len;
	      old_data[idx].addr
		= ((char *) ah->addr + oldlocrec->record[idx].offset);

	      __md5_buffer (old_data[idx].addr, old_data[idx].size,
			    old_data[idx].sum);
	    }

	if (add_locale_to_archive (&new_ah,
				   ((char *) ah->addr
				    + oldnamehashtab[cnt].name_offset),
				   old_data, 0) != 0)
	  error (EXIT_FAILURE, 0, _("cannot extend locale archive file"));
      }


  /* Make the file globally readable.  */
  if (fchmod (fd, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) == -1)
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval,
	     _("cannot change mode of resized locale archive"));
    }

  /* Rename the new file.  */
  if (rename (fname, archivefname) != 0)
    {
      int errval = errno;
      unlink (fname);
      error (EXIT_FAILURE, errval, _("cannot rename new archive"));
    }

  /* Close the old file.  */
  close_archive (ah);

  /* Add the information for the new one.  */
  *ah = new_ah;
}


void
open_archive (struct locarhandle *ah)
{
  struct stat64 st;
  struct stat64 st2;
  int fd;
  struct locarhead head;
  int retry = 0;

 again:
  /* Open the archive.  We must have exclusive write access.  */
  fd = open64 (archivefname, O_RDWR);
  if (fd == -1)
    {
      /* Maybe the file does not yet exist.  */
      if (errno == ENOENT)
	{
	  create_archive (ah);
	  return;
	}
      else
	error (EXIT_FAILURE, errno, _("cannot open locale archive \"%s\""),
	       archivefname);
    }

  if (fstat64 (fd, &st) < 0)
    error (EXIT_FAILURE, errno, _("cannot stat locale archive \"%s\""),
	   archivefname);

  if (lockf64 (fd, F_LOCK, st.st_size) == -1)
    {
      close (fd);

      if (retry++ < max_locarchive_open_retry)
	{
	  struct timespec req;

	  /* Wait for a bit.  */
	  req.tv_sec = 0;
	  req.tv_nsec = 1000000 * (random () % 500 + 1);
	  (void) nanosleep (&req, NULL);

	  goto again;
	}

      error (EXIT_FAILURE, errno, _("cannot lock locale archive \"%s\""),
	     archivefname);
    }

  /* One more check.  Maybe another process replaced the archive file
     with a new, larger one since we opened the file.  */
  if (stat64 (archivefname, &st2) == -1
      || st.st_dev != st2.st_dev
      || st.st_ino != st2.st_ino)
    {
      close (fd);
      goto again;
    }

  /* Read the header.  */
  if (TEMP_FAILURE_RETRY (read (fd, &head, sizeof (head))) != sizeof (head))
    error (EXIT_FAILURE, errno, _("cannot read archive header"));

  ah->fd = fd;
  ah->len = (head.sumhash_offset
	     + head.sumhash_size * sizeof (struct sumhashent));

  /* Now we know how large the administrative information part is.
     Map all of it.  */
  ah->addr = mmap64 (NULL, ah->len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
  if (ah->addr == MAP_FAILED)
    error (EXIT_FAILURE, errno, _("cannot map archive header"));
}


void
close_archive (struct locarhandle *ah)
{
  munmap (ah->addr, ah->len);
  close (ah->fd);
}


/* Check the content of the archive for duplicates.  Add the content
   of the files if necessary.  Add all the names, possibly overwriting
   old files.  */
int
add_locale_to_archive (ah, name, data, replace)
     struct locarhandle *ah;
     const char *name;
     locale_data_t data;
     bool replace;
{
  /* First look for the name.  If it already exists and we are not
     supposed to replace it don't do anything.  If it does not exist
     we have to allocate a new locale record.  */
  size_t name_len = strlen (name);
  uint32_t file_offsets[__LC_LAST];
  unsigned int num_new_offsets = 0;
  struct sumhashent *sumhashtab;
  uint32_t hval;
  unsigned int cnt;
  unsigned int idx;
  unsigned int insert_idx;
  struct locarhead *head;
  struct namehashent *namehashtab;
  struct namehashent *namehashent;
  unsigned int incr;
  struct locrecent *locrecent;

  head = ah->addr;
  sumhashtab = (struct sumhashent *) ((char *) ah->addr
				      + head->sumhash_offset);
  namehashtab = (struct namehashent *) ((char *) ah->addr
					+ head->namehash_offset);


  /* For each locale category data set determine whether the same data
     is already somewhere in the archive.  */
  for (cnt = 0; cnt < __LC_LAST; ++cnt)
    if (cnt != LC_ALL)
      {
	/* By default signal that we have no data.  */
	file_offsets[cnt] = 0;
	++num_new_offsets;

	/* Compute the hash value of the checksum to determine a
	   starting point for the search in the MD5 hash value
	   table.  */
	hval = compute_hashval (data[cnt].sum, 16);

	idx = hval % head->sumhash_size;
	incr = 1 + hval % (head->sumhash_size - 2);

	while (sumhashtab[idx].file_offset != 0)
	  {
	    if (memcmp (data[cnt].sum, sumhashtab[idx].sum, 16) == 0)
	      {
		/* Found it.  */
		file_offsets[cnt] = sumhashtab[idx].file_offset;
		--num_new_offsets;
		break;
	      }

	    idx += incr;
	    if (idx >= head->sumhash_size)
	      idx -= head->sumhash_size;
	  }
      }


  /* Hash value of the locale name.  */
  hval = compute_hashval (name, name_len);

  insert_idx = -1;
  idx = hval % head->namehash_size;
  incr = 1 + hval % (head->namehash_size - 2);

  /* If the name_offset field is zero this means this is no
     deleted entry and therefore no entry can be found.  */
  while (namehashtab[idx].name_offset != 0)
    {
      if (namehashtab[idx].hashval == hval
	  && strcmp (name,
		     (char *) ah->addr + namehashtab[idx].name_offset) == 0)
	{
	  /* Found the entry.  */
	  if (! replace)
	    {
	      if (! be_quiet)
		error (0, 0, _("locale '%s' already exists"), name);
	      return 1;
	    }

	  break;
	}

      /* Remember the first place we can insert the new entry.  */
      if (namehashtab[idx].locrec_offset == 0 && insert_idx == -1)
	insert_idx = idx;

      idx += incr;
      if (idx >= head->namehash_size)
	idx -= head->namehash_size;
    }

  /* Add as early as possible.  */
  if (insert_idx != -1)
    idx = insert_idx;

  namehashent = &namehashtab[idx];

  /* Determine whether we have to resize the file.  */
  if (100 * (head->sumhash_used + num_new_offsets) > 75 * head->sumhash_size
      || (namehashent->locrec_offset == 0
	  && (head->locrectab_used == head->locrectab_size
	      || head->string_used + name_len + 1 > head->string_size
	      || 100 * head->namehash_used > 75 * head->namehash_size)))
    {
      /* The current archive is not large enough.  */
      enlarge_archive (ah, head);
      return add_locale_to_archive (ah, name, data, replace);
    }

  /* Add the locale data which is not yet in the archive.  */
  for (cnt = 0; cnt < __LC_LAST; ++cnt)
    if (cnt != LC_ALL && file_offsets[cnt] == 0)
      {
	/* The data for this section is not yet available in the
	   archive.  Append it.  */
	off64_t lastpos;
	uint32_t md5hval;

	lastpos = lseek64 (ah->fd, 0, SEEK_END);
	if (lastpos == (off64_t) -1)
	  error (EXIT_FAILURE, errno, _("cannot add to locale archive"));

	/* Align all data to a 16 byte boundary.  */
	if ((lastpos & 15) != 0)
	  {
	    static const char zeros[15] = { 0, };

	    if (TEMP_FAILURE_RETRY (write (ah->fd, zeros, 16 - (lastpos & 15)))
		!= 16 - (lastpos & 15))
	      error (EXIT_FAILURE, errno, _("cannot add to locale archive"));

	    lastpos += 16 - (lastpos & 15);
	  }

	/* Remember the position.  */
	file_offsets[cnt] = lastpos;

	/* Write the data.  */
	if (TEMP_FAILURE_RETRY (write (ah->fd, data[cnt].addr, data[cnt].size))
	    != data[cnt].size)
	  error (EXIT_FAILURE, errno, _("cannot add to locale archive"));

	/* Add the hash value to the hash table.  */
	md5hval = compute_hashval (data[cnt].sum, 16);

	idx = md5hval % head->sumhash_size;
	incr = 1 + md5hval % (head->sumhash_size - 2);

	while (sumhashtab[idx].file_offset != 0)
	  {
	    idx += incr;
	    if (idx >= head->sumhash_size)
	      idx -= head->sumhash_size;
	  }

	memcpy (sumhashtab[idx].sum, data[cnt].sum, 16);
	sumhashtab[idx].file_offset = file_offsets[cnt];

	++head->sumhash_used;
      }


  if (namehashent->locrec_offset == 0)
    {
      /* Add the name string.  */
      memcpy ((char *) ah->addr + head->string_offset + head->string_used,
	      name, name_len + 1);
      namehashent->name_offset = head->string_offset + head->string_used;
      head->string_used += name_len + 1;

      /* Allocate a name location record.  */
      namehashent->locrec_offset = (head->locrectab_offset
				    + (head->locrectab_used++
				       * sizeof (struct locrecent)));

      namehashent->hashval = hval;

      ++head->namehash_used;
    }


  /* Fill in the table with the locations of the locale data.  */
  locrecent = (struct locrecent *) ((char *) ah->addr
				    + namehashent->locrec_offset);
  for (cnt = 0; cnt < __LC_LAST; ++cnt)
    if (cnt != LC_ALL)
      {
	locrecent->record[cnt].offset = file_offsets[cnt];
	locrecent->record[cnt].len = data[cnt].size;
      }


  /* Read the locale.alias file to see whether any matching record is
     found.  If an entry is available check whether it is already in
     the archive.  If this is the case check whether the new locale's
     name is more specific than the one currently referred to by the
     alias.  */


  return 0;
}


int
add_locales_to_archive (nlist, list, replace)
     size_t nlist;
     char *list[];
     bool replace;
{
  struct locarhandle ah;
  int result = 0;

  /* Open the archive.  This call never returns if we cannot
     successfully open the archive.  */
  open_archive (&ah);

  while (nlist-- > 0)
    {
      const char *fname = *list++;
      size_t fnamelen = strlen (fname);
      struct stat64 st;
      DIR *dirp;
      struct dirent64 *d;
      int seen;
      locale_data_t data;
      int cnt;

      if (! be_quiet)
	printf (_("Adding %s\n"), fname);

      /* First see whether this really is a directory and whether it
	 contains all the require locale category files.  */
      if (stat64 (fname, &st) < 0)
	{
	  error (0, 0, _("stat of \"%s\" failed: %s: ignored"), fname,
		 strerror (errno));
	  continue;
	}
      if (!S_ISDIR (st.st_mode))
	{
	  error (0, 0, _("\"%s\" is no directory; ignored"), fname);
	  continue;
	}

      dirp = opendir (fname);
      if (dirp == NULL)
	{
	  error (0, 0, _("cannot open directory \"%s\": %s: ignored"),
		 fname, strerror (errno));
	  continue;
	}

      seen = 0;
      while ((d = readdir64 (dirp)) != NULL)
	{
	  for (cnt = 0; cnt < __LC_LAST; ++cnt)
	    if (cnt != LC_ALL)
	      if (strcmp (d->d_name, locnames[cnt]) == 0)
		{
		  unsigned char d_type;

		  /* We have an object of the required name.  If it's
		     a directory we have to look at a file with the
		     prefix "SYS_".  Otherwise we have found what we
		     are looking for.  */
#ifdef _DIRENT_HAVE_D_TYPE
		  d_type = d->d_type;

		  if (d_type != DT_REG)
#endif
		    {
		      char fullname[fnamelen + 2 * strlen (d->d_name) + 7];

#ifdef _DIRENT_HAVE_D_TYPE
		      if (d_type == DT_UNKNOWN)
#endif
			{
			  strcpy (stpcpy (stpcpy (fullname, fname), "/"),
				  d->d_name);

			  if (stat64 (fullname, &st) == -1)
			    /* We cannot stat the file, ignore it.  */
			    break;

			  d_type = IFTODT (st.st_mode);
			}

		      if (d_type == DT_DIR)
			{
			  /* We have to do more tests.  The file is a
			     directory and it therefore must contain a
			     regular file with the same name except a
			     "SYS_" prefix.  */
			  strcpy (stpcpy (stpcpy (stpcpy (stpcpy (fullname,
								  fname),
							  "/"),
						  d->d_name),
					  "/SYS_"),
				  d->d_name);

			  if (stat64 (fullname, &st) == -1)
			    /* There is no SYS_* file or we cannot
			       access it.  */
			    break;

			  d_type = IFTODT (st.st_mode);
			}
		    }

		  /* If we found a regular file (eventually after
		     following a symlink) we are successful.  */
		  if (d_type == DT_REG)
		    ++seen;
		  break;
		}
	}

      closedir (dirp);

      if (seen != __LC_LAST - 1)
	{
	  /* We don't have all locale category files.  Ignore the name.  */
	  error (0, 0, _("incomplete set of locale files in \"%s\""),
		 fname);
	  continue;
	}

      /* Add the files to the archive.  To do this we first compute
	 sizes and the MD5 sums of all the files.  */
      for (cnt = 0; cnt < __LC_LAST; ++cnt)
	if (cnt != LC_ALL)
	  {
	    char fullname[fnamelen + 2 * strlen (locnames[cnt]) + 7];
	    int fd;

	    strcpy (stpcpy (stpcpy (fullname, fname), "/"), locnames[cnt]);
	    fd = open64 (fullname, O_RDONLY);
	    if (fd == -1 || fstat64 (fd, &st) == -1)
	      {
		/* Cannot read the file.  */
		if (fd != -1)
		  close (fd);
		break;
	      }

	    if (S_ISDIR (st.st_mode))
	      {
		close (fd);
		strcpy (stpcpy (stpcpy (stpcpy (stpcpy (fullname, fname),
						"/"),
					locnames[cnt]),
				"/SYS_"),
			locnames[cnt]);

		fd = open64 (fullname, O_RDONLY);
		if (fd == -1 || fstat64 (fd, &st) == -1
		    || !S_ISREG (st.st_mode))
		  {
		    if (fd != -1)
		      close (fd);
		    break;
		  }
	      }

	    /* Map the file.  */
	    data[cnt].addr = mmap64 (NULL, st.st_size, PROT_READ, MAP_SHARED,
				     fd, 0);
	    if (data[cnt].addr == MAP_FAILED)
	      {
		/* Cannot map it.  */
		close (fd);
		break;
	      }

	    data[cnt].size = st.st_size;
	    __md5_buffer (data[cnt].addr, st.st_size, data[cnt].sum);

	    /* We don't need the file descriptor anymore.  */
	    close (fd);
	  }

      if (cnt != __LC_LAST)
	{
	  while (cnt-- > 0)
	    if (cnt != LC_ALL)
	      munmap (data[cnt].addr, data[cnt].size);

	  error (0, 0, _("cannot read all files in \"%s\": ignored"), fname);

	  continue;
	}

      result |= add_locale_to_archive (&ah, basename (fname), data, replace);

      for (cnt = 0; cnt < __LC_LAST; ++cnt)
	if (cnt != LC_ALL)
	  munmap (data[cnt].addr, data[cnt].size);
    }

  /* We are done.  */
  close_archive (&ah);

  return result;
}


int
delete_locales_from_archive (nlist, list)
     size_t nlist;
     char *list[];
{
  struct locarhandle ah;
  struct locarhead *head;
  struct namehashent *namehashtab;

  /* Open the archive.  This call never returns if we cannot
     successfully open the archive.  */
  open_archive (&ah);

  head = ah.addr;
  namehashtab = (struct namehashent *) ((char *) ah.addr
					+ head->namehash_offset);

  while (nlist-- > 0)
    {
      const char *locname = *list++;
      uint32_t hval;
      unsigned int idx;
      unsigned int incr;

      /* Search for this locale in the archive.  */
      hval = compute_hashval (locname, strlen (locname));

      idx = hval % head->namehash_size;
      incr = 1 + hval % (head->namehash_size - 2);

      /* If the name_offset field is zero this means this is no
	 deleted entry and therefore no entry can be found.  */
      while (namehashtab[idx].name_offset != 0)
	{
	  if (namehashtab[idx].hashval == hval
	      && (strcmp (locname,
			  (char *) ah.addr + namehashtab[idx].name_offset)
		  == 0))
	    {
	      /* Found the entry.  Now mark it as removed by zero-ing
		 the reference to the locale record.  */
	      namehashtab[idx].locrec_offset = 0;
	      --head->namehash_used;
	      break;
	    }

	  idx += incr;
	  if (idx >= head->namehash_size)
	    idx -= head->namehash_size;
	}

      if (namehashtab[idx].name_offset == 0 && ! be_quiet)
	error (0, 0, _("locale \"%s\" not in archive"), locname);
    }

  close_archive (&ah);

  return 0;
}


static int
xstrcmp (const void *a, const void *b)
{
  return strcmp (*(const char **) a, *(const char **) b);
}


void
show_archive_content (void)
{
  struct locarhandle ah;
  struct locarhead *head;
  struct namehashent *namehashtab;
  int cnt;
  char **names;
  int used;

  /* Open the archive.  This call never returns if we cannot
     successfully open the archive.  */
  open_archive (&ah);

  head = ah.addr;

  names = (char **) xmalloc (head->namehash_used * sizeof (char *));

  namehashtab = (struct namehashent *) ((char *) ah.addr
					+ head->namehash_offset);
  for (cnt = used = 0; cnt < head->namehash_size; ++cnt)
    if (namehashtab[cnt].locrec_offset != 0)
      {
	assert (used < head->namehash_used);
	names[used++] = ah.addr + namehashtab[cnt].name_offset;
      }

  /* Sort the names.  */
  qsort (names, used, sizeof (char *), xstrcmp);

  for (cnt = 0; cnt < used; ++cnt)
    puts (names[cnt]);

  close_archive (&ah);

  exit (EXIT_SUCCESS);
}