/* Copyright (c) 2000, 2023, Oracle and/or its affiliates.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License, version 2.0,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   This program 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 General Public License, version 2.0, for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */

/* Describe, check and repair of MyISAM tables */

#include "fulltext.h"
#include "my_default.h"

#include <m_ctype.h>
#include <stdarg.h>
#include <my_getopt.h>
#include <my_bit.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif

static uint decode_bits;
static char **default_argv;
static const char *load_default_groups[]= { "myisamchk", 0 };
static const char *set_collation_name, *opt_tmpdir;
static CHARSET_INFO *set_collation;
static long opt_myisam_block_size;
static long opt_key_cache_block_size;
static const char *my_progname_short;
static int stopwords_inited= 0;
static MY_TMPDIR myisamchk_tmpdir;

static const char *type_names[]=
{ "impossible","char","binary", "short", "long", "float",
  "double","number","unsigned short",
  "unsigned long","longlong","ulonglong","int24",
  "uint24","int8","varchar", "varbin","?",
  "?"};

static const char *prefix_packed_txt="packed ",
		  *bin_packed_txt="prefix ",
		  *diff_txt="stripped ",
		  *null_txt="NULL",
		  *blob_txt="BLOB ";

static const char *field_pack[]=
{"","no endspace", "no prespace",
 "no zeros", "blob", "constant", "table-lockup",
 "always zero","varchar","unique-hash","?","?"};

static const char *myisam_stats_method_str="nulls_unequal";

static void get_options(int *argc,char * * *argv);
static void print_version(void);
static void usage(void);
static int myisamchk(MI_CHECK *param, char *filename);
static void descript(MI_CHECK *param, MI_INFO *info, char * name);
static int mi_sort_records(MI_CHECK *param, MI_INFO *info,
                           char * name, uint sort_key,
			   my_bool write_info, my_bool update_index);
static int sort_record_index(MI_SORT_PARAM *sort_param, MI_INFO *info,
                             MI_KEYDEF *keyinfo,
			     my_off_t page,uchar *buff,uint sortkey,
			     File new_file, my_bool update_index);

MI_CHECK check_param;

/* myisamchk can create multiple threads (see sort.c) */
extern st_keycache_thread_var *keycache_thread_var()
{
  return (st_keycache_thread_var*)my_get_thread_local(keycache_tls_key);
}

	/* Main program */

int main(int argc, char **argv)
{
  int error;
  MY_INIT(argv[0]);

  memset(&main_thread_keycache_var, 0, sizeof(st_keycache_thread_var));
  mysql_cond_init(PSI_NOT_INSTRUMENTED,
                  &main_thread_keycache_var.suspend);

  (void)my_create_thread_local_key(&keycache_tls_key, NULL);
  my_set_thread_local(keycache_tls_key, &main_thread_keycache_var);

  my_progname_short= my_progname+dirname_length(my_progname);

  myisamchk_init(&check_param);
  check_param.opt_lock_memory=1;		/* Lock memory if possible */
  check_param.using_global_keycache = 0;
  get_options(&argc,(char***) &argv);
  myisam_quick_table_bits=decode_bits;
  error=0;
  while (--argc >= 0)
  {
    int new_error=myisamchk(&check_param, *(argv++));
    if ((check_param.testflag & T_REP_ANY) != T_REP)
      check_param.testflag&= ~T_REP;
    (void) fflush(stdout);
    (void) fflush(stderr);
    if ((check_param.error_printed | check_param.warning_printed) &&
	(check_param.testflag & T_FORCE_CREATE) &&
	(!(check_param.testflag & (T_REP | T_REP_BY_SORT | T_SORT_RECORDS |
				   T_SORT_INDEX))))
    {
      uint old_testflag=check_param.testflag;
      if (!(check_param.testflag & T_REP))
	check_param.testflag|= T_REP_BY_SORT;
      check_param.testflag&= ~T_EXTEND;			/* Don't needed  */
      error|=myisamchk(&check_param, argv[-1]);
      check_param.testflag= old_testflag;
      (void) fflush(stdout);
      (void) fflush(stderr);
    }
    else
      error|=new_error;
    if (argc && (!(check_param.testflag & T_SILENT) || check_param.testflag & T_INFO))
    {
      puts("\n---------\n");
      (void) fflush(stdout);
    }
  }
  if (check_param.total_files > 1)
  {					/* Only if descript */
    char buff[22],buff2[22];
    if (!(check_param.testflag & T_SILENT) || check_param.testflag & T_INFO)
      puts("\n---------\n");
    printf("\nTotal of all %d MyISAM-files:\nData records: %9s   Deleted blocks: %9s\n",check_param.total_files,llstr(check_param.total_records,buff),
	   llstr(check_param.total_deleted,buff2));
  }
  free_defaults(default_argv);
  free_tmpdir(&myisamchk_tmpdir);
  ft_free_stopwords();
  my_end(check_param.testflag & T_INFO ? MY_CHECK_ERROR | MY_GIVE_INFO : MY_CHECK_ERROR);
  mysql_cond_destroy(&main_thread_keycache_var.suspend);
  my_delete_thread_local_key(keycache_tls_key);
  exit(error);
  return 0;				/* No compiler warning */
} /* main */

enum options_mc {
  OPT_CHARSETS_DIR=256, OPT_SET_COLLATION,OPT_START_CHECK_POS,
  OPT_CORRECT_CHECKSUM, OPT_KEY_BUFFER_SIZE,
  OPT_KEY_CACHE_BLOCK_SIZE, OPT_MYISAM_BLOCK_SIZE,
  OPT_READ_BUFFER_SIZE, OPT_WRITE_BUFFER_SIZE, OPT_SORT_BUFFER_SIZE,
  OPT_SORT_KEY_BLOCKS, OPT_DECODE_BITS, OPT_FT_MIN_WORD_LEN,
  OPT_FT_MAX_WORD_LEN, OPT_FT_STOPWORD_FILE,
  OPT_MAX_RECORD_LENGTH, OPT_STATS_METHOD
};

static struct my_option my_long_options[] =
{
  {"analyze", 'a',
   "Analyze distribution of keys. Will make some joins in MySQL faster. You can check the calculated distribution.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"block-search", 'b',
   "No help available.",
   0, 0, 0, GET_ULONG, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"backup", 'B',
   "Make a backup of the .MYD file as 'filename-time.BAK'.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"character-sets-dir", OPT_CHARSETS_DIR,
   "Directory where character sets are.",
   &charsets_dir, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"check", 'c',
   "Check table for errors.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"check-only-changed", 'C',
   "Check only tables that have changed since last check. It also applies to other requested actions (e.g. --analyze will be ignored if the table is already analyzed).",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"correct-checksum", OPT_CORRECT_CHECKSUM,
   "Correct checksum information for table.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef NDEBUG
  {"debug", '#', "This is a non-debug version. Catch this and exit.",
   0, 0, 0, GET_DISABLED, OPT_ARG, 0, 0, 0, 0, 0, 0},
#else
  {"debug", '#',
   "Output debug log. Often this is 'd:t:o,filename'.",
   0, 0, 0, GET_STR, OPT_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"description", 'd',
   "Prints some information about table.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"data-file-length", 'D',
   "Max length of data file (when recreating data-file when it's full).",
   &check_param.max_data_file_length,
   &check_param.max_data_file_length,
   0, GET_LL, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"extend-check", 'e',
   "If used when checking a table, ensure that the table is 100 percent consistent, which will take a long time. If used when repairing a table, try to recover every possible row from the data file. Normally this will also find a lot of garbage rows; Don't use this option with repair if you are not totally desperate.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"fast", 'F',
   "Check only tables that haven't been closed properly. It also applies to other requested actions (e.g. --analyze will be ignored if the table is already analyzed).",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"force", 'f',
   "Restart with -r if there are any errors in the table. States will be updated as with --update-state.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"HELP", 'H',
   "Display this help and exit.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"help", '?',
   "Display this help and exit.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"information", 'i',
   "Print statistics information about table that is checked.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"keys-used", 'k',
   "Tell MyISAM to update only some specific keys. # is a bit mask of which keys to use. This can be used to get faster inserts.",
   &check_param.keys_in_use,
   &check_param.keys_in_use,
   0, GET_ULL, REQUIRED_ARG, -1, 0, 0, 0, 0, 0},
  {"max-record-length", OPT_MAX_RECORD_LENGTH,
   "Skip rows bigger than this if myisamchk can't allocate memory to hold it",
   &check_param.max_record_length,
   &check_param.max_record_length,
   0, GET_ULL, REQUIRED_ARG, LLONG_MAX, 0, LLONG_MAX, 0, 0, 0},
  {"medium-check", 'm',
   "Faster than extend-check, but only finds 99.99% of all errors. Should be good enough for most cases.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"quick", 'q', "Faster repair by not modifying the data file.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"read-only", 'T',
   "Don't mark table as checked.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"recover", 'r',
   "Can fix almost anything except unique keys that aren't unique.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"safe-recover", 'o',
   "Uses old recovery method; Slower than '-r' but can handle a couple of cases where '-r' reports that it can't fix the data file.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"sort-recover", 'n',
   "Force recovering with sorting even if the temporary file was very big.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
#ifdef DEBUG
  {"start-check-pos", OPT_START_CHECK_POS,
   "No help available.",
   0, 0, 0, GET_ULL, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
#endif
  {"set-auto-increment", 'A',
   "Force auto_increment to start at this or higher value. If no value is given, then sets the next auto_increment value to the highest used value for the auto key + 1.",
   &check_param.auto_increment_value,
   &check_param.auto_increment_value,
   0, GET_ULL, OPT_ARG, 0, 0, 0, 0, 0, 0},
  {"set-collation", OPT_SET_COLLATION,
   "Change the collation used by the index",
   &set_collation_name, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"silent", 's',
   "Only print errors. One can use two -s to make myisamchk very silent.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"sort-index", 'S',
   "Sort index blocks. This speeds up 'read-next' in applications.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"sort-records", 'R',
   "Sort records according to an index. This makes your data much more localized and may speed up things. (It may be VERY slow to do a sort the first time!)",
   &check_param.opt_sort_key,
   &check_param.opt_sort_key,
   0, GET_UINT, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"tmpdir", 't',
   "Path for temporary files.",
   &opt_tmpdir,
   0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"update-state", 'U',
   "Mark tables as crashed if any errors were found.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"unpack", 'u',
   "Unpack file packed with myisampack.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"verbose", 'v',
   "Print more information. This can be used with --description and --check. Use many -v for more verbosity!",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"version", 'V',
   "Print version and exit.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  {"wait", 'w',
   "Wait if table is locked.",
   0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
  { "key_buffer_size", OPT_KEY_BUFFER_SIZE, "",
    &check_param.use_buffers, &check_param.use_buffers, 0,
    GET_ULL, REQUIRED_ARG, USE_BUFFER_INIT, MALLOC_OVERHEAD,
    SIZE_T_MAX, MALLOC_OVERHEAD,  IO_SIZE, 0},
  { "key_cache_block_size", OPT_KEY_CACHE_BLOCK_SIZE,  "",
    &opt_key_cache_block_size,
    &opt_key_cache_block_size, 0,
    GET_LONG, REQUIRED_ARG, MI_KEY_BLOCK_LENGTH, MI_MIN_KEY_BLOCK_LENGTH,
    MI_MAX_KEY_BLOCK_LENGTH, 0, MI_MIN_KEY_BLOCK_LENGTH, 0},
  { "myisam_block_size", OPT_MYISAM_BLOCK_SIZE,  "",
    &opt_myisam_block_size, &opt_myisam_block_size, 0,
    GET_LONG, REQUIRED_ARG, MI_KEY_BLOCK_LENGTH, MI_MIN_KEY_BLOCK_LENGTH,
    MI_MAX_KEY_BLOCK_LENGTH, 0, MI_MIN_KEY_BLOCK_LENGTH, 0},
  { "read_buffer_size", OPT_READ_BUFFER_SIZE, "",
    &check_param.read_buffer_length,
    &check_param.read_buffer_length, 0, GET_ULONG, REQUIRED_ARG,
    (long) READ_BUFFER_INIT, (long) MALLOC_OVERHEAD,
    INT_MAX32, (long) MALLOC_OVERHEAD, (long) 1L, 0},
  { "write_buffer_size", OPT_WRITE_BUFFER_SIZE, "",
    &check_param.write_buffer_length,
    &check_param.write_buffer_length, 0, GET_ULONG, REQUIRED_ARG,
    (long) READ_BUFFER_INIT, (long) MALLOC_OVERHEAD,
    INT_MAX32, (long) MALLOC_OVERHEAD, (long) 1L, 0},
  { "sort_buffer_size", OPT_SORT_BUFFER_SIZE,
    "Deprecated. myisam_sort_buffer_size alias is being used",
    &check_param.sort_buffer_length,
    &check_param.sort_buffer_length, 0, GET_ULL, REQUIRED_ARG,
    (long) SORT_BUFFER_INIT, (long) (MIN_SORT_BUFFER + MALLOC_OVERHEAD),
    SIZE_T_MAX, (long) MALLOC_OVERHEAD, (long) 1L, 0},
  { "myisam_sort_buffer_size", OPT_SORT_BUFFER_SIZE, 
    "Alias of sort_buffer_size parameter",
    &check_param.sort_buffer_length,
    &check_param.sort_buffer_length, 0, GET_ULL, REQUIRED_ARG,
    (long) SORT_BUFFER_INIT, (long) (MIN_SORT_BUFFER + MALLOC_OVERHEAD),
    SIZE_T_MAX, (long) MALLOC_OVERHEAD, (long) 1L, 0},
  { "sort_key_blocks", OPT_SORT_KEY_BLOCKS, "",
    &check_param.sort_key_blocks,
    &check_param.sort_key_blocks, 0, GET_ULONG, REQUIRED_ARG,
    BUFFERS_WHEN_SORTING, 4L, 100L, 0L, 1L, 0},
  { "decode_bits", OPT_DECODE_BITS, "", &decode_bits,
    &decode_bits, 0, GET_UINT, REQUIRED_ARG, 9L, 4L, 17L, 0L, 1L, 0},
  { "ft_min_word_len", OPT_FT_MIN_WORD_LEN, "", &ft_min_word_len,
    &ft_min_word_len, 0, GET_ULONG, REQUIRED_ARG, 4, 1, HA_FT_MAXCHARLEN,
    0, 1, 0},
  { "ft_max_word_len", OPT_FT_MAX_WORD_LEN, "", &ft_max_word_len,
    &ft_max_word_len, 0, GET_ULONG, REQUIRED_ARG, HA_FT_MAXCHARLEN, 10,
    HA_FT_MAXCHARLEN, 0, 1, 0},
  { "ft_stopword_file", OPT_FT_STOPWORD_FILE,
    "Use stopwords from this file instead of built-in list.",
    &ft_stopword_file, &ft_stopword_file, 0, GET_STR,
    REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  {"stats_method", OPT_STATS_METHOD,
   "Specifies how index statistics collection code should treat NULLs. "
   "Possible values of name are \"nulls_unequal\" (default behavior for 4.1/5.0), "
   "\"nulls_equal\" (emulate 4.0 behavior), and \"nulls_ignored\".",
   &myisam_stats_method_str, &myisam_stats_method_str, 0,
    GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
  { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
};


static void print_version(void)
{
  printf("%s  Ver 2.7 for %s at %s\n", my_progname, SYSTEM_TYPE,
	 MACHINE_TYPE);
}


static void usage(void)
{
  print_version();
  puts("By Monty, for your professional use");
  puts("This software comes with NO WARRANTY: see the PUBLIC for details.\n");
  puts("Description, check and repair of MyISAM tables.");
  puts("Used without options all tables on the command will be checked for errors");
  printf("Usage: %s [OPTIONS] tables[.MYI]\n", my_progname_short);
  printf("\nGlobal options:\n");
#ifndef NDEBUG
  printf("\
  -#, --debug=...     Output debug log. Often this is 'd:t:o,filename'.\n");
#endif
  printf("\
  -H, --HELP          Display this help and exit.\n\
  -?, --help          Display this help and exit.\n\
  -t, --tmpdir=path   Path for temporary files. Multiple paths can be\n\
                      specified, separated by ");
#if defined(_WIN32)
   printf("semicolon (;)");
#else
   printf("colon (:)");
#endif
                      printf(", they will be used\n\
                      in a round-robin fashion.\n\
  -s, --silent	      Only print errors.  One can use two -s to make\n\
		      myisamchk very silent.\n\
  -v, --verbose       Print more information. This can be used with\n\
                      --description and --check. Use many -v for more verbosity.\n\
  -V, --version       Print version and exit.\n\
  -w, --wait          Wait if table is locked.\n\n");
#ifdef DEBUG
  puts("  --start-check-pos=# Start reading file at given offset.\n");
#endif

  puts("Check options (check is the default action for myisamchk):\n\
  -c, --check	      Check table for errors.\n\
  -e, --extend-check  Check the table VERY throughly.  Only use this in\n\
                      extreme cases as myisamchk should normally be able to\n\
                      find out if the table is ok even without this switch.\n\
  -F, --fast	      Check only tables that haven't been closed properly.\n\
  -C, --check-only-changed\n\
		      Check only tables that have changed since last check.\n\
  -f, --force         Restart with '-r' if there are any errors in the table.\n\
		      States will be updated as with '--update-state'.\n\
  -i, --information   Print statistics information about table that is checked.\n\
  -m, --medium-check  Faster than extend-check, but only finds 99.99% of\n\
		      all errors.  Should be good enough for most cases.\n\
  -U  --update-state  Mark tables as crashed if you find any errors.\n\
  -T, --read-only     Don't mark table as checked.\n");

  puts("Repair options (When using '-r' or '-o'):\n\
  -B, --backup	      Make a backup of the .MYD file as 'filename-time.BAK'.\n\
  --correct-checksum  Correct checksum information for table.\n\
  -D, --data-file-length=#  Max length of data file (when recreating data\n\
                      file when it's full).\n\
  -e, --extend-check  Try to recover every possible row from the data file\n\
		      Normally this will also find a lot of garbage rows;\n\
		      Don't use this option if you are not totally desperate.\n\
  -f, --force         Overwrite old temporary files.\n\
  -k, --keys-used=#   Tell MyISAM to update only some specific keys. # is a\n\
	              bit mask of which keys to use. This can be used to\n\
		      get faster inserts.\n\
  --max-record-length=#\n\
                      Skip rows bigger than this if myisamchk can't allocate\n\
		      memory to hold it.\n\
  -r, --recover       Can fix almost anything except unique keys that aren't\n\
                      unique.\n\
  -n, --sort-recover  Forces recovering with sorting even if the temporary\n\
		      file would be very big.\n\
  -o, --safe-recover  Uses old recovery method; Slower than '-r' but can\n\
		      handle a couple of cases where '-r' reports that it\n\
		      can't fix the data file.\n\
  --character-sets-dir=...\n\
                      Directory where character sets are.\n\
  --set-collation=name\n\
 		      Change the collation used by the index.\n\
  -q, --quick         Faster repair by not modifying the data file.\n\
                      One can give a second '-q' to force myisamchk to\n\
		      modify the original datafile in case of duplicate keys.\n\
		      NOTE: Tables where the data file is currupted can't be\n\
		      fixed with this option.\n\
  -u, --unpack        Unpack file packed with myisampack.\n\
");

  puts("Other actions:\n\
  -a, --analyze	      Analyze distribution of keys. Will make some joins in\n\
		      MySQL faster.  You can check the calculated distribution\n\
		      by using '--description --verbose table_name'.\n\
  --stats_method=name Specifies how index statistics collection code should\n\
                      treat NULLs. Possible values of name are \"nulls_unequal\"\n\
                      (default for 4.1/5.0), \"nulls_equal\" (emulate 4.0), and \n\
                      \"nulls_ignored\".\n\
  -d, --description   Prints some information about table.\n\
  -A, --set-auto-increment[=value]\n\
		      Force auto_increment to start at this or higher value\n\
		      If no value is given, then sets the next auto_increment\n\
		      value to the highest used value for the auto key + 1.\n\
  -S, --sort-index    Sort index blocks.  This speeds up 'read-next' in\n\
		      applications.\n\
  -R, --sort-records=#\n\
		      Sort records according to an index.  This makes your\n\
		      data much more localized and may speed up things\n\
		      (It may be VERY slow to do a sort the first time!).\n\
  -b,  --block-search=#\n\
                       Find a record, a block at given offset belongs to.");

  print_defaults("my", load_default_groups);
  my_print_variables(my_long_options);
}


const char *myisam_stats_method_names[] = {"nulls_unequal", "nulls_equal",
                                           "nulls_ignored", NullS};
TYPELIB myisam_stats_method_typelib= {
  array_elements(myisam_stats_method_names) - 1, "",
  myisam_stats_method_names, NULL};

	 /* Read options */

static my_bool
get_one_option(int optid,
	       const struct my_option *opt MY_ATTRIBUTE((unused)),
	       char *argument)
{
  switch (optid) {
  case 'a':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_STATISTICS;
    else
      check_param.testflag|= T_STATISTICS;
    break;
  case 'A':
    if (argument)
      check_param.auto_increment_value= my_strtoull(argument, NULL, 0);
    else
      check_param.auto_increment_value= 0;	/* Set to max used value */
    check_param.testflag|= T_AUTO_INC;
    break;
  case 'b':
    check_param.search_after_block= strtoul(argument, NULL, 10);
    break;
  case 'B':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_BACKUP_DATA;
    else
      check_param.testflag|= T_BACKUP_DATA;
    break;
  case 'c':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_CHECK;
    else
      check_param.testflag|= T_CHECK;
    break;
  case 'C':
    if (argument == disabled_my_option)
      check_param.testflag&= ~(T_CHECK | T_CHECK_ONLY_CHANGED);
    else
      check_param.testflag|= T_CHECK | T_CHECK_ONLY_CHANGED;
    break;
  case 'D':
    check_param.max_data_file_length= my_strtoll(argument, NULL, 10);
    break;
  case 's':				/* silent */
    if (argument == disabled_my_option)
      check_param.testflag&= ~(T_SILENT | T_VERY_SILENT);
    else
    {
      if (check_param.testflag & T_SILENT)
	check_param.testflag|= T_VERY_SILENT;
      check_param.testflag|= T_SILENT;
      check_param.testflag&= ~T_WRITE_LOOP;
    }
    break;
  case 'w':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_WAIT_FOREVER;
    else
      check_param.testflag|= T_WAIT_FOREVER;
    break;
  case 'd':				/* description if isam-file */
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_DESCRIPT;
    else
      check_param.testflag|= T_DESCRIPT;
    break;
  case 'e':				/* extend check */
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_EXTEND;
    else
      check_param.testflag|= T_EXTEND;
    break;
  case 'i':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_INFO;
    else
      check_param.testflag|= T_INFO;
    break;
  case 'f':
    if (argument == disabled_my_option)
    {
      check_param.tmpfile_createflag= O_RDWR | O_TRUNC | O_EXCL;
      check_param.testflag&= ~(T_FORCE_CREATE | T_UPDATE_STATE);
    }
    else
    {
      check_param.tmpfile_createflag= O_RDWR | O_TRUNC;
      check_param.testflag|= T_FORCE_CREATE | T_UPDATE_STATE;
    }
    break;
  case 'F':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_FAST;
    else
      check_param.testflag|= T_FAST;
    break;
  case 'k':
    check_param.keys_in_use= (ulonglong) my_strtoll(argument, NULL, 10);
    break;
  case 'm':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_MEDIUM;
    else
      check_param.testflag|= T_MEDIUM;		/* Medium check */
    break;
  case 'r':				/* Repair table */
    check_param.testflag&= ~T_REP_ANY;
    if (argument != disabled_my_option)
      check_param.testflag|= T_REP_BY_SORT;
    break;
  case 'o':
    check_param.testflag&= ~T_REP_ANY;
    check_param.force_sort= 0;
    if (argument != disabled_my_option)
    {
      check_param.testflag|= T_REP;
    }
    break;
  case 'n':
    check_param.testflag&= ~T_REP_ANY;
    if (argument == disabled_my_option)
      check_param.force_sort= 0;
    else
    {
      check_param.testflag|= T_REP_BY_SORT;
      check_param.force_sort= 1;
    }
    break;
  case 'q':
    if (argument == disabled_my_option)
      check_param.testflag&= ~(T_QUICK | T_FORCE_UNIQUENESS);
    else
      check_param.testflag|=
        (check_param.testflag & T_QUICK) ? T_FORCE_UNIQUENESS : T_QUICK;
    break;
  case 'u':
    if (argument == disabled_my_option)
      check_param.testflag&= ~(T_UNPACK | T_REP_BY_SORT);
    else
      check_param.testflag|= T_UNPACK | T_REP_BY_SORT;
    break;
  case 'v':				/* Verbose */
    if (argument == disabled_my_option)
    {
      check_param.testflag&= ~T_VERBOSE;
      check_param.verbose=0;
    }
    else
    {
      check_param.testflag|= T_VERBOSE;
      check_param.verbose++;
    }
    break;
  case 'R':				/* Sort records */
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_SORT_RECORDS;
    else
    {
      check_param.testflag|= T_SORT_RECORDS;
      check_param.opt_sort_key= (uint) atoi(argument) - 1;
      if (check_param.opt_sort_key >= MI_MAX_KEY)
      {
	fprintf(stderr,
		"The value of the sort key is bigger than max key: %d.\n",
		MI_MAX_KEY);
	exit(1);
      }
    }
    break;
  case 'S':			      /* Sort index */
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_SORT_INDEX;
    else
      check_param.testflag|= T_SORT_INDEX;
    break;
  case 'T':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_READONLY;
    else
      check_param.testflag|= T_READONLY;
    break;
  case 'U':
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_UPDATE_STATE;
    else
      check_param.testflag|= T_UPDATE_STATE;
    break;
  case '#':
    if (argument == disabled_my_option)
    {
      DBUG_POP();
    }
    else
    {
      DBUG_PUSH(argument ? argument : "d:t:o,/tmp/myisamchk.trace");
    }
    break;
  case 'V':
    print_version();
    exit(0);
  case OPT_CORRECT_CHECKSUM:
    if (argument == disabled_my_option)
      check_param.testflag&= ~T_CALC_CHECKSUM;
    else
      check_param.testflag|= T_CALC_CHECKSUM;
    break;
  case OPT_STATS_METHOD:
  {
    int method;
    enum_mi_stats_method method_conv= 0;
    myisam_stats_method_str= argument;
    if ((method= find_type(argument, &myisam_stats_method_typelib,
                           FIND_TYPE_BASIC)) <= 0)
    {
      fprintf(stderr, "Invalid value of stats_method: %s.\n", argument);
      exit(1);
    }
    switch (method-1) {
    case 0: 
      method_conv= MI_STATS_METHOD_NULLS_EQUAL;
      break;
    case 1:
      method_conv= MI_STATS_METHOD_NULLS_NOT_EQUAL;
      break;
    case 2:
      method_conv= MI_STATS_METHOD_IGNORE_NULLS;
      break;
    default: assert(0);                         /* Impossible */
    }
    check_param.stats_method= method_conv;
    break;
  }
#ifdef DEBUG					/* Only useful if debugging */
  case OPT_START_CHECK_POS:
    check_param.start_check_pos= my_strtoull(argument, NULL, 0);
    break;
#endif
  case 'H':
    my_print_help(my_long_options);
    exit(0);
  case '?':
    usage();
    exit(0);
  }
  return 0;
}


static void get_options(int *argc,char ***argv)
{
  int ho_error;

  if (load_defaults("my", load_default_groups, argc, argv))
    exit(1);

  default_argv= *argv;
  if (isatty(fileno(stdout)))
    check_param.testflag|=T_WRITE_LOOP;

  if ((ho_error=handle_options(argc, argv, my_long_options, get_one_option)))
    exit(ho_error);

  /* If using repair, then update checksum if one uses --update-state */
  if ((check_param.testflag & T_UPDATE_STATE) &&
      (check_param.testflag & T_REP_ANY))
    check_param.testflag|= T_CALC_CHECKSUM;

  if (*argc == 0)
  {
    usage();
    exit(1);
  }

  if ((check_param.testflag & T_UNPACK) &&
      (check_param.testflag & (T_QUICK | T_SORT_RECORDS)))
  {
    (void) fprintf(stderr,
		 "%s: --unpack can't be used with --quick or --sort-records\n",
		 my_progname_short);
    exit(1);
  }
  if ((check_param.testflag & T_READONLY) &&
      (check_param.testflag &
       (T_REP_ANY | T_STATISTICS | T_AUTO_INC |
	T_SORT_RECORDS | T_SORT_INDEX | T_FORCE_CREATE)))
  {
    (void) fprintf(stderr,
		 "%s: Can't use --readonly when repairing or sorting\n",
		 my_progname_short);
    exit(1);
  }

  if (init_tmpdir(&myisamchk_tmpdir, opt_tmpdir))
    exit(1);

  check_param.tmpdir=&myisamchk_tmpdir;
  check_param.key_cache_block_size= opt_key_cache_block_size;

  if (set_collation_name)
    if (!(set_collation= get_charset_by_name(set_collation_name,
                                             MYF(MY_WME))))
      exit(1);

  myisam_block_size=(uint) 1 << my_bit_log2(opt_myisam_block_size);
  return;
} /* get options */


	/* Check table */

static int myisamchk(MI_CHECK *param, char * filename)
{
  int error,lock_type,recreate;
  int rep_quick= param->testflag & (T_QUICK | T_FORCE_UNIQUENESS);
  MI_INFO *info;
  File datafile;
  char llbuff[22],llbuff2[22];
  my_bool state_updated=0;
  MYISAM_SHARE *share;
  DBUG_ENTER("myisamchk");

  param->out_flag=error=param->warning_printed=param->error_printed=
    recreate=0;
  datafile=0;
  param->isam_file_name=filename;		/* For error messages */
  if (!(info=mi_open(filename,
		     (param->testflag & (T_DESCRIPT | T_READONLY)) ?
		     O_RDONLY : O_RDWR,
		     HA_OPEN_FOR_REPAIR |
		     ((param->testflag & T_WAIT_FOREVER) ?
		      HA_OPEN_WAIT_IF_LOCKED :
		      (param->testflag & T_DESCRIPT) ?
		      HA_OPEN_IGNORE_IF_LOCKED : HA_OPEN_ABORT_IF_LOCKED))))
  {
    /* Avoid twice printing of isam file name */
    param->error_printed=1;
    switch (my_errno()) {
    case HA_ERR_CRASHED:
      mi_check_print_error(param,"'%s' doesn't have a correct index definition. You need to recreate it before you can do a repair",filename);
      break;
    case HA_ERR_NOT_A_TABLE:
      mi_check_print_error(param,"'%s' is not a MyISAM-table",filename);
      break;
    case HA_ERR_CRASHED_ON_USAGE:
      mi_check_print_error(param,"'%s' is marked as crashed",filename);
      break;
    case HA_ERR_CRASHED_ON_REPAIR:
      mi_check_print_error(param,"'%s' is marked as crashed after last repair",filename);
      break;
    case HA_ERR_OLD_FILE:
      mi_check_print_error(param,"'%s' is an old type of MyISAM-table", filename);
      break;
    case HA_ERR_END_OF_FILE:
      mi_check_print_error(param,"Couldn't read complete header from '%s'", filename);
      break;
    case EAGAIN:
      mi_check_print_error(param,"'%s' is locked. Use -w to wait until unlocked",filename);
      break;
    case ENOENT:
      mi_check_print_error(param,"File '%s' doesn't exist",filename);
      break;
    case EACCES:
      mi_check_print_error(param,"You don't have permission to use '%s'",filename);
      break;
    default:
      mi_check_print_error(param,"%d when opening MyISAM-table '%s'",
                           my_errno(),filename);
      break;
    }
    DBUG_RETURN(1);
  }
  share=info->s;
  share->options&= ~HA_OPTION_READ_ONLY_DATA; /* We are modifing it */
  share->tot_locks-= share->r_locks;
  share->r_locks=0;

  /*
    Skip the checking of the file if:
    We are using --fast and the table is closed properly
    We are using --check-only-changed-tables and the table hasn't changed
  */
  if (param->testflag & (T_FAST | T_CHECK_ONLY_CHANGED))
  {
    my_bool need_to_check= mi_is_crashed(info) || share->state.open_count != 0;

    if ((param->testflag & (T_REP_ANY | T_SORT_RECORDS)) &&
	((share->state.changed & (STATE_CHANGED | STATE_CRASHED |
				  STATE_CRASHED_ON_REPAIR) ||
	  !(param->testflag & T_CHECK_ONLY_CHANGED))))
      need_to_check=1;

    if (info->s->base.keys && info->state->records)
    {
      if ((param->testflag & T_STATISTICS) &&
          (share->state.changed & STATE_NOT_ANALYZED))
        need_to_check=1;
      if ((param->testflag & T_SORT_INDEX) &&
          (share->state.changed & STATE_NOT_SORTED_PAGES))
        need_to_check=1;
      if ((param->testflag & T_REP_BY_SORT) &&
          (share->state.changed & STATE_NOT_OPTIMIZED_KEYS))
        need_to_check=1;
    }
    if ((param->testflag & T_CHECK_ONLY_CHANGED) &&
	(share->state.changed & (STATE_CHANGED | STATE_CRASHED |
				 STATE_CRASHED_ON_REPAIR)))
      need_to_check=1;
    if (!need_to_check)
    {
      if (!(param->testflag & T_SILENT) || param->testflag & T_INFO)
	printf("MyISAM file: %s is already checked\n",filename);
      if (mi_close(info))
      {
	mi_check_print_error(param,"%d when closing MyISAM-table '%s'",
			     my_errno(),filename);
	DBUG_RETURN(1);
      }
      DBUG_RETURN(0);
    }
  }
  if ((param->testflag & (T_REP_ANY | T_STATISTICS |
			  T_SORT_RECORDS | T_SORT_INDEX)) &&
      (((param->testflag & T_UNPACK) &&
	share->data_file_type == COMPRESSED_RECORD) ||
       mi_uint2korr(share->state.header.state_info_length) !=
       MI_STATE_INFO_SIZE ||
       mi_uint2korr(share->state.header.base_info_length) !=
       MI_BASE_INFO_SIZE ||
       mi_is_any_intersect_keys_active(param->keys_in_use, share->base.keys,
                                       ~share->state.key_map) ||
       test_if_almost_full(info) ||
       info->s->state.header.file_version[3] != myisam_file_magic[3] ||
       (set_collation &&
        set_collation->number != share->state.header.language) ||
       myisam_block_size != MI_KEY_BLOCK_LENGTH))
  {
    if (set_collation)
      param->language= set_collation->number;
    if (recreate_table(param, &info,filename))
    {
      (void) fprintf(stderr,
		   "MyISAM-table '%s' is not fixed because of errors\n",
	      filename);
      DBUG_RETURN(-1);
    }
    recreate=1;
    if (!(param->testflag & T_REP_ANY))
    {
      param->testflag|=T_REP_BY_SORT;		/* if only STATISTICS */
      if (!(param->testflag & T_SILENT))
	printf("- '%s' has old table-format. Recreating index\n",filename);
      rep_quick|=T_QUICK;
    }
    share=info->s;
    share->tot_locks-= share->r_locks;
    share->r_locks=0;
  }

  if (param->testflag & T_DESCRIPT)
  {
    param->total_files++;
    param->total_records+=info->state->records;
    param->total_deleted+=info->state->del;
    descript(param, info, filename);
  }
  else
  {
    if (!stopwords_inited++)
      ft_init_stopwords();

    if (!(param->testflag & T_READONLY))
      lock_type = F_WRLCK;			/* table is changed */
    else
      lock_type= F_RDLCK;
    if (info->lock_type == F_RDLCK)
      info->lock_type=F_UNLCK;			/* Read only table */
    if (_mi_readinfo(info,lock_type,0))
    {
      mi_check_print_error(param,"Can't lock indexfile of '%s', error: %d",
                           filename,my_errno());
      param->error_printed=0;
      goto end2;
    }
    /*
      _mi_readinfo() has locked the table.
      We mark the table as locked (without doing file locks) to be able to
      use functions that only works on locked tables (like row caching).
    */
    mi_lock_database(info, F_EXTRA_LCK);
    datafile=info->dfile;

    if (param->testflag & (T_REP_ANY | T_SORT_RECORDS | T_SORT_INDEX))
    {
      if (param->testflag & T_REP_ANY)
      {
	ulonglong tmp=share->state.key_map;
	mi_copy_keys_active(share->state.key_map, share->base.keys,
                            param->keys_in_use);
	if (tmp != share->state.key_map)
	  info->update|=HA_STATE_CHANGED;
      }
      if (rep_quick && chk_del(param, info, param->testflag & ~T_VERBOSE))
      {
	if (param->testflag & T_FORCE_CREATE)
	{
	  rep_quick=0;
	  mi_check_print_info(param,"Creating new data file\n");
	}
	else
	{
	  error=1;
	  mi_check_print_error(param,
			       "Quick-recover aborted; Run recovery without switch 'q'");
	}
      }
      if (!error)
      {
	if ((param->testflag & T_REP_BY_SORT) &&
	    (mi_is_any_key_active(share->state.key_map) ||
	     (rep_quick && !param->keys_in_use && !recreate)) &&
	    mi_test_if_sort_rep(info, info->state->records,
				info->s->state.key_map,
				param->force_sort))
	{
          /*
            The new file might not be created with the right stats depending
            on how myisamchk is run, so we must copy file stats from old to new.
          */
          error= mi_repair_by_sort(param, info, filename, rep_quick, FALSE);
	  state_updated=1;
	}
	else if (param->testflag & T_REP_ANY)
	  error= mi_repair(param, info, filename, rep_quick, FALSE);
      }
      if (!error && param->testflag & T_SORT_RECORDS)
      {
	/*
	  The data file is nowadays reopened in the repair code so we should
	  soon remove the following reopen-code
	*/
	if (param->out_flag & O_NEW_DATA)
	{			/* Change temp file to org file */
	  (void) my_close(info->dfile,MYF(MY_WME)); /* Close new file */
	  error|=change_to_newfile(filename, MI_NAME_DEXT, DATA_TMP_EXT, MYF(0));
	  if (mi_open_datafile(info,info->s, NULL, -1))
	    error=1;
	  param->out_flag&= ~O_NEW_DATA; /* We are using new datafile */
	  param->read_cache.file=info->dfile;
	}
	if (! error)
	{
	  uint key;
	  /*
	    We can't update the index in mi_sort_records if we have a
	    prefix compressed or fulltext index
	  */
	  my_bool update_index=1;
	  for (key=0 ; key < share->base.keys; key++)
	    if (share->keyinfo[key].flag & (HA_BINARY_PACK_KEY|HA_FULLTEXT))
            {
              update_index=0;
              break;
            }

	  error=mi_sort_records(param,info,filename,param->opt_sort_key,
                             /* what is the following parameter for ? */
				(my_bool) !(param->testflag & T_REP),
				update_index);
	  datafile=info->dfile;	/* This is now locked */
	  if (!error && !update_index)
	  {
	    if (param->verbose)
	      puts("Table had a compressed index;  We must now recreate the index");
	    error= mi_repair_by_sort(param, info, filename, 1, FALSE);
	  }
	}
      }
      if (!error && param->testflag & T_SORT_INDEX)
	error= mi_sort_index(param, info, filename, FALSE);
      if (!error)
	share->state.changed&= ~(STATE_CHANGED | STATE_CRASHED |
				 STATE_CRASHED_ON_REPAIR);
      else
	mi_mark_crashed(info);
    }
    else if ((param->testflag & T_CHECK) || !(param->testflag & T_AUTO_INC))
    {
      if (!(param->testflag & T_SILENT) || param->testflag & T_INFO)
	printf("Checking MyISAM file: %s\n",filename);
      if (!(param->testflag & T_SILENT))
	printf("Data records: %7s   Deleted blocks: %7s\n",
	       llstr(info->state->records,llbuff),
	       llstr(info->state->del,llbuff2));
      error =chk_status(param,info);
      mi_intersect_keys_active(share->state.key_map, param->keys_in_use);
      error =chk_size(param,info);
      if (!error || !(param->testflag & (T_FAST | T_FORCE_CREATE)))
	error|=chk_del(param, info,param->testflag);
      if ((!error || (!(param->testflag & (T_FAST | T_FORCE_CREATE)) &&
		      !param->start_check_pos)))
      {
	error|=chk_key(param, info);
	if (!error && (param->testflag & (T_STATISTICS | T_AUTO_INC)))
	  error=update_state_info(param, info,
				  ((param->testflag & T_STATISTICS) ?
				   UPDATE_STAT : 0) |
				  ((param->testflag & T_AUTO_INC) ?
				   UPDATE_AUTO_INC : 0));
      }
      if ((!rep_quick && !error) ||
	  !(param->testflag & (T_FAST | T_FORCE_CREATE)))
      {
	if (param->testflag & (T_EXTEND | T_MEDIUM))
	  (void) init_key_cache(dflt_key_cache,opt_key_cache_block_size,
                                (size_t)param->use_buffers, 0, 0);
	(void) init_io_cache(&param->read_cache,datafile,
			   (uint) param->read_buffer_length,
			   READ_CACHE,
			   (param->start_check_pos ?
			    param->start_check_pos :
			    share->pack.header_length),
			   1,
			   MYF(MY_WME));
	lock_memory(param);
	if ((info->s->options & (HA_OPTION_PACK_RECORD |
				 HA_OPTION_COMPRESS_RECORD)) ||
	    (param->testflag & (T_EXTEND | T_MEDIUM)))
	  error|=chk_data_link(param, info, param->testflag & T_EXTEND);
	error|=flush_blocks(param, share->key_cache, share->kfile);
	(void) end_io_cache(&param->read_cache);
      }
      if (!error)
      {
	if ((share->state.changed & STATE_CHANGED) &&
	    (param->testflag & T_UPDATE_STATE))
	  info->update|=HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
	share->state.changed&= ~(STATE_CHANGED | STATE_CRASHED |
				 STATE_CRASHED_ON_REPAIR);
      }
      else if (!mi_is_crashed(info) &&
	       (param->testflag & T_UPDATE_STATE))
      {						/* Mark crashed */
	mi_mark_crashed(info);
	info->update|=HA_STATE_CHANGED | HA_STATE_ROW_CHANGED;
      }
    }
  }
  if ((param->testflag & T_AUTO_INC) ||
      ((param->testflag & T_REP_ANY) && info->s->base.auto_key))
    update_auto_increment_key(param, info,
			      (my_bool) !MY_TEST(param->testflag & T_AUTO_INC));

  if (!(param->testflag & T_DESCRIPT))
  {
    if (info->update & HA_STATE_CHANGED && ! (param->testflag & T_READONLY))
      error|=update_state_info(param, info,
			       UPDATE_OPEN_COUNT |
			       (((param->testflag & T_REP_ANY) ?
				 UPDATE_TIME : 0) |
				(state_updated ? UPDATE_STAT : 0) |
				((param->testflag & T_SORT_RECORDS) ?
				 UPDATE_SORT : 0)));
    (void) lock_file(param, share->kfile,0L,F_UNLCK,"indexfile",filename);
    info->update&= ~HA_STATE_CHANGED;
  }
  mi_lock_database(info, F_UNLCK);
end2:
  if (mi_close(info))
  {
    mi_check_print_error(param,"%d when closing MyISAM-table '%s'",my_errno(),filename);
    DBUG_RETURN(1);
  }
  if (error == 0)
  {
    if (param->out_flag & O_NEW_DATA)
      error|=change_to_newfile(filename,MI_NAME_DEXT,DATA_TMP_EXT,
			       ((param->testflag & T_BACKUP_DATA) ?
				MYF(MY_REDEL_MAKE_BACKUP) : MYF(0)));
    if (param->out_flag & O_NEW_INDEX)
      error|=change_to_newfile(filename, MI_NAME_IEXT, INDEX_TMP_EXT, MYF(0));
  }
  (void) fflush(stdout); (void) fflush(stderr);
  if (param->error_printed)
  {
    if (param->testflag & (T_REP_ANY | T_SORT_RECORDS | T_SORT_INDEX))
    {
      (void) fprintf(stderr,
		   "MyISAM-table '%s' is not fixed because of errors\n",
		   filename);
      if (param->testflag & T_REP_ANY)
	(void) fprintf(stderr,
		     "Try fixing it by using the --safe-recover (-o), the --force (-f) option or by not using the --quick (-q) flag\n");
    }
    else if (!(param->error_printed & 2) &&
	     !(param->testflag & T_FORCE_CREATE))
      (void) fprintf(stderr,
      "MyISAM-table '%s' is corrupted\nFix it using switch \"-r\" or \"-o\"\n",
	      filename);
  }
  else if (param->warning_printed &&
	   ! (param->testflag & (T_REP_ANY | T_SORT_RECORDS | T_SORT_INDEX |
			  T_FORCE_CREATE)))
    (void) fprintf(stderr, "MyISAM-table '%s' is usable but should be fixed\n",
		 filename);
  (void) fflush(stderr);
  DBUG_RETURN(error);
} /* myisamchk */


	 /* Write info about table */

static void descript(MI_CHECK *param, MI_INFO *info, char * name)
{
  uint key,keyseg_nr,field,start;
  MI_KEYDEF *keyinfo;
  HA_KEYSEG *keyseg;
  const char *text;
  char buff[160],length[10],*pos,*end;
  enum en_fieldtype type;
  MYISAM_SHARE *share=info->s;
  char llbuff[22],llbuff2[22];
  DBUG_ENTER("describe");

  printf("\nMyISAM file:         %s\n",name);
  fputs("Record format:       ",stdout);
  if (share->options & HA_OPTION_COMPRESS_RECORD)
    puts("Compressed");
  else if (share->options & HA_OPTION_PACK_RECORD)
    puts("Packed");
  else
    puts("Fixed length");
  printf("Character set:       %s (%d)\n",
	 get_charset_name(share->state.header.language),
	 share->state.header.language);

  if (param->testflag & T_VERBOSE)
  {
    printf("File-version:        %d\n",
	   (int) share->state.header.file_version[3]);
    if (share->state.create_time)
    {
      get_date(buff,1,share->state.create_time);
      printf("Creation time:       %s\n",buff);
    }
    if (share->state.check_time)
    {
      get_date(buff,1,share->state.check_time);
      printf("Recover time:        %s\n",buff);
    }
    pos=buff;
    if (share->state.changed & STATE_CRASHED)
      my_stpcpy(buff,"crashed");
    else
    {
      if (share->state.open_count)
	pos=my_stpcpy(pos,"open,");
      if (share->state.changed & STATE_CHANGED)
	pos=my_stpcpy(pos,"changed,");
      else
	pos=my_stpcpy(pos,"checked,");
      if (!(share->state.changed & STATE_NOT_ANALYZED))
	pos=my_stpcpy(pos,"analyzed,");
      if (!(share->state.changed & STATE_NOT_OPTIMIZED_KEYS))
	pos=my_stpcpy(pos,"optimized keys,");
      if (!(share->state.changed & STATE_NOT_SORTED_PAGES))
	pos=my_stpcpy(pos,"sorted index pages,");
      pos[-1]=0;				/* Remove extra ',' */
    }      
    printf("Status:              %s\n",buff);
    if (share->base.auto_key)
    {
      printf("Auto increment key:  %13d  Last value:         %13s\n",
	     share->base.auto_key,
	     llstr(share->state.auto_increment,llbuff));
    }
    if (share->options & (HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD))
      printf("Checksum:  %23s\n",llstr(info->state->checksum,llbuff));

    if (share->options & HA_OPTION_DELAY_KEY_WRITE)
      printf("Keys are only flushed at close\n");

  }
  printf("Data records:        %13s  Deleted blocks:     %13s\n",
	 llstr(info->state->records,llbuff),llstr(info->state->del,llbuff2));
  if (param->testflag & T_SILENT)
    DBUG_VOID_RETURN;				/* This is enough */

  if (param->testflag & T_VERBOSE)
  {
    printf("Datafile parts:      %13s  Deleted data:       %13s\n",
	   llstr(share->state.split,llbuff),
	   llstr(info->state->empty,llbuff2));
    printf("Datafile pointer (bytes):%9d  Keyfile pointer (bytes):%9d\n",
	   share->rec_reflength,share->base.key_reflength);
    printf("Datafile length:     %13s  Keyfile length:     %13s\n",
	   llstr(info->state->data_file_length,llbuff),
	   llstr(info->state->key_file_length,llbuff2));

    if (info->s->base.reloc == 1L && info->s->base.records == 1L)
      puts("This is a one-record table");
    else
    {
      if (share->base.max_data_file_length != HA_OFFSET_ERROR ||
	  share->base.max_key_file_length != HA_OFFSET_ERROR)
	printf("Max datafile length: %13s  Max keyfile length: %13s\n",
	       llstr(share->base.max_data_file_length-1,llbuff),
               ullstr(share->base.max_key_file_length - 1, llbuff2));
    }
  }

  printf("Recordlength:        %13d\n",(int) share->base.pack_reclength);
  if (! mi_is_all_keys_active(share->state.key_map, share->base.keys))
  {
    longlong2str(share->state.key_map,buff,2);
    printf("Using only keys '%s' of %d possibly keys\n",
	   buff, share->base.keys);
  }
  puts("\ntable description:");
  printf("Key Start Len Index   Type");
  if (param->testflag & T_VERBOSE)
    printf("                     Rec/key         Root  Blocksize");
  (void) putchar('\n');

  for (key=keyseg_nr=0, keyinfo= &share->keyinfo[0] ;
       key < share->base.keys;
       key++,keyinfo++)
  {
    keyseg=keyinfo->seg;
    if (keyinfo->flag & HA_NOSAME) text="unique ";
    else if (keyinfo->flag & HA_FULLTEXT) text="fulltext ";
    else text="multip.";

    pos=buff;
    if (keyseg->flag & HA_REVERSE_SORT)
      *pos++ = '-';
    pos=my_stpcpy(pos,type_names[keyseg->type]);
    *pos++ = ' ';
    *pos=0;
    if (keyinfo->flag & HA_PACK_KEY)
      pos=my_stpcpy(pos,prefix_packed_txt);
    if (keyinfo->flag & HA_BINARY_PACK_KEY)
      pos=my_stpcpy(pos,bin_packed_txt);
    if (keyseg->flag & HA_SPACE_PACK)
      pos=my_stpcpy(pos,diff_txt);
    if (keyseg->flag & HA_BLOB_PART)
      pos=my_stpcpy(pos,blob_txt);
    if (keyseg->flag & HA_NULL_PART)
      pos=my_stpcpy(pos,null_txt);
    *pos=0;

    printf("%-4d%-6ld%-3d %-8s%-21s",
	   key+1,(long) keyseg->start+1,keyseg->length,text,buff);
    if (share->state.key_root[key] != HA_OFFSET_ERROR)
      llstr(share->state.key_root[key],buff);
    else
      buff[0]=0;
    if (param->testflag & T_VERBOSE)
      printf("%11lu %12s %10d",
	     share->state.rec_per_key_part[keyseg_nr++],
	     buff,keyinfo->block_length);
    (void) putchar('\n');
    while ((++keyseg)->type != HA_KEYTYPE_END)
    {
      pos=buff;
      if (keyseg->flag & HA_REVERSE_SORT)
	*pos++ = '-';
      pos=my_stpcpy(pos,type_names[keyseg->type]);
      *pos++= ' ';
      if (keyseg->flag & HA_SPACE_PACK)
	pos=my_stpcpy(pos,diff_txt);
      if (keyseg->flag & HA_BLOB_PART)
	pos=my_stpcpy(pos,blob_txt);
      if (keyseg->flag & HA_NULL_PART)
	pos=my_stpcpy(pos,null_txt);
      *pos=0;
      printf("    %-6ld%-3d         %-21s",
	     (long) keyseg->start+1,keyseg->length,buff);
      if (param->testflag & T_VERBOSE)
	printf("%11lu", share->state.rec_per_key_part[keyseg_nr++]);
      (void) putchar('\n');
    }
    keyseg++;
  }
  if (share->state.header.uniques)
  {
    MI_UNIQUEDEF *uniqueinfo;
    puts("\nUnique  Key  Start  Len  Nullpos  Nullbit  Type");
    for (key=0,uniqueinfo= &share->uniqueinfo[0] ;
	 key < share->state.header.uniques; key++, uniqueinfo++)
    {
      my_bool new_row=0;
      char null_bit[8],null_pos[16];
      printf("%-8d%-5d",key+1,uniqueinfo->key+1);
      for (keyseg=uniqueinfo->seg ; keyseg->type != HA_KEYTYPE_END ; keyseg++)
      {
	if (new_row)
	  fputs("             ",stdout);
	null_bit[0]=null_pos[0]=0;
	if (keyseg->null_bit)
	{
	  sprintf(null_bit,"%d",keyseg->null_bit);
	  sprintf(null_pos,"%ld",(long) keyseg->null_pos+1);
	}
	printf("%-7ld%-5d%-9s%-10s%-30s\n",
	       (long) keyseg->start+1,keyseg->length,
	       null_pos,null_bit,
	       type_names[keyseg->type]);
	new_row=1;
      }
    }
  }
  if (param->verbose > 1)
  {
    char null_bit[8],null_pos[8];
    printf("\nField Start Length Nullpos Nullbit Type");
    if (share->options & HA_OPTION_COMPRESS_RECORD)
      printf("                         Huff tree  Bits");
    (void) putchar('\n');
    start=1;
    for (field=0 ; field < share->base.fields ; field++)
    {
      if (share->options & HA_OPTION_COMPRESS_RECORD)
	type=share->rec[field].base_type;
      else
	type=(enum en_fieldtype) share->rec[field].type;
      end=my_stpcpy(buff,field_pack[type]);
      if (share->options & HA_OPTION_COMPRESS_RECORD)
      {
	if (share->rec[field].pack_type & PACK_TYPE_SELECTED)
	  end=my_stpcpy(end,", not_always");
	if (share->rec[field].pack_type & PACK_TYPE_SPACE_FIELDS)
	  end=my_stpcpy(end,", no empty");
	if (share->rec[field].pack_type & PACK_TYPE_ZERO_FILL)
	{
	  sprintf(end,", zerofill(%d)",share->rec[field].space_length_bits);
	  end=strend(end);
	}
      }
      if (buff[0] == ',')
	my_stpcpy(buff,buff+2);
      int10_to_str((long) share->rec[field].length,length,10);
      null_bit[0]=null_pos[0]=0;
      if (share->rec[field].null_bit)
      {
	sprintf(null_bit,"%d",share->rec[field].null_bit);
	sprintf(null_pos,"%d",share->rec[field].null_pos+1);
      }
      printf("%-6d%-6d%-7s%-8s%-8s%-35s",field+1,start,length,
	     null_pos, null_bit, buff);
      if (share->options & HA_OPTION_COMPRESS_RECORD)
      {
	if (share->rec[field].huff_tree)
	  printf("%3d    %2d",
		 (uint) (share->rec[field].huff_tree-share->decode_trees)+1,
		 share->rec[field].huff_tree->quick_table_bits);
      }
      (void) putchar('\n');
      start+=share->rec[field].length;
    }
  }
  DBUG_VOID_RETURN;
} /* describe */


	/* Sort records according to one key */

static int mi_sort_records(MI_CHECK *param,
			   MI_INFO *info, char * name,
			   uint sort_key,
			   my_bool write_info,
			   my_bool update_index)
{
  int got_error;
  uint key;
  MI_KEYDEF *keyinfo;
  File new_file;
  uchar *temp_buff;
  ha_rows old_record_count;
  MYISAM_SHARE *share=info->s;
  char llbuff[22],llbuff2[22];
  SORT_INFO sort_info;
  MI_SORT_PARAM sort_param;
  DBUG_ENTER("sort_records");

  memset(&sort_info, 0, sizeof(sort_info));
  memset(&sort_param, 0, sizeof(sort_param));
  sort_param.sort_info=&sort_info;
  sort_info.param=param;
  keyinfo= &share->keyinfo[sort_key];
  got_error=1;
  temp_buff=0;
  new_file= -1;

  if (! mi_is_key_active(share->state.key_map, sort_key))
  {
    mi_check_print_warning(param,
			   "Can't sort table '%s' on key %d;  No such key",
		name,sort_key+1);
    param->error_printed=0;
    DBUG_RETURN(0);				/* Nothing to do */
  }
  if (keyinfo->flag & HA_FULLTEXT)
  {
    mi_check_print_warning(param,"Can't sort table '%s' on FULLTEXT key %d",
			   name,sort_key+1);
    param->error_printed=0;
    DBUG_RETURN(0);				/* Nothing to do */
  }
  if (share->data_file_type == COMPRESSED_RECORD)
  {
    mi_check_print_warning(param,"Can't sort read-only table '%s'", name);
    param->error_printed=0;
    DBUG_RETURN(0);				/* Nothing to do */
  }
  if (!(param->testflag & T_SILENT))
  {
    printf("- Sorting records for MyISAM-table '%s'\n",name);
    if (write_info)
      printf("Data records: %9s   Deleted: %9s\n",
	     llstr(info->state->records,llbuff),
	     llstr(info->state->del,llbuff2));
  }
  if (share->state.key_root[sort_key] == HA_OFFSET_ERROR)
    DBUG_RETURN(0);				/* Nothing to do */

  init_key_cache(dflt_key_cache, opt_key_cache_block_size,
                 (size_t) param->use_buffers, 0, 0);
  if (init_io_cache(&info->rec_cache,-1,(uint) param->write_buffer_length,
		   WRITE_CACHE,share->pack.header_length,1,
		   MYF(MY_WME | MY_WAIT_IF_FULL)))
    goto err;
  info->opt_flag|=WRITE_CACHE_USED;

  if (!(temp_buff=(uchar*) my_alloca((uint) keyinfo->block_length)))
  {
    mi_check_print_error(param,"Not enough memory for key block");
    goto err;
  }

  if (!mi_alloc_rec_buff(info, -1, &sort_param.record))
  {
    mi_check_print_error(param,"Not enough memory for record");
    goto err;
  }
  fn_format(param->temp_filename,name,"", MI_NAME_DEXT,2+4+32);
  new_file= my_create(fn_format(param->temp_filename,
                                param->temp_filename, "",
                                DATA_TMP_EXT, 2+4),
                      0, param->tmpfile_createflag,
                      MYF(0));
  if (new_file < 0)
  {
    mi_check_print_error(param,"Can't create new tempfile: '%s'",
			 param->temp_filename);
    goto err;
  }
  if (share->pack.header_length)
    if (filecopy(param,new_file,info->dfile,0L,share->pack.header_length,
		 "datafile-header"))
      goto err;
  info->rec_cache.file=new_file;		/* Use this file for cacheing*/

  lock_memory(param);
  for (key=0 ; key < share->base.keys ; key++)
    share->keyinfo[key].flag|= HA_SORT_ALLOWS_SAME;

  if (my_pread(share->kfile,(uchar*) temp_buff,
	       (uint) keyinfo->block_length,
	       share->state.key_root[sort_key],
	       MYF(MY_NABP+MY_WME)))
  {
    mi_check_print_error(param,"Can't read indexpage from filepos: %s",
		(ulong) share->state.key_root[sort_key]);
    goto err;
  }

  /* Setup param for sort_write_record */
  sort_info.info=info;
  sort_info.new_data_file_type=share->data_file_type;
  sort_param.fix_datafile=1;
  sort_param.master=1;
  sort_param.filepos=share->pack.header_length;
  old_record_count=info->state->records;
  info->state->records=0;
  if (sort_info.new_data_file_type != COMPRESSED_RECORD)
    info->state->checksum=0;

  if (sort_record_index(&sort_param,info,keyinfo,share->state.key_root[sort_key],
			temp_buff, sort_key,new_file,update_index) ||
      write_data_suffix(&sort_info,1) ||
      flush_io_cache(&info->rec_cache))
    goto err;

  if (info->state->records != old_record_count)
  {
    mi_check_print_error(param,"found %s of %s records",
		llstr(info->state->records,llbuff),
		llstr(old_record_count,llbuff2));
    goto err;
  }

  (void) my_close(info->dfile,MYF(MY_WME));
  param->out_flag|=O_NEW_DATA;			/* Data in new file */
  info->dfile=new_file;				/* Use new datafile */
  info->state->del=0;
  info->state->empty=0;
  share->state.dellink= HA_OFFSET_ERROR;
  info->state->data_file_length=sort_param.filepos;
  share->state.split=info->state->records;	/* Only hole records */
  share->state.version=(ulong) time((time_t*) 0);

  info->update= (short) (HA_STATE_CHANGED | HA_STATE_ROW_CHANGED);

  if (param->testflag & T_WRITE_LOOP)
  {
    (void) fputs("          \r",stdout); (void) fflush(stdout);
  }
  got_error=0;

err:
  if (got_error && new_file >= 0)
  {
    (void) end_io_cache(&info->rec_cache);
    (void) my_close(new_file,MYF(MY_WME));
    (void) my_delete(param->temp_filename, MYF(MY_WME));
  }
  my_free(mi_get_rec_buff_ptr(info, sort_param.record));
  info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED);
  (void) end_io_cache(&info->rec_cache);
  my_free(sort_info.buff);
  sort_info.buff=0;
  share->state.sortkey=sort_key;
  DBUG_RETURN(flush_blocks(param, share->key_cache, share->kfile) |
	      got_error);
} /* sort_records */


	 /* Sort records recursive using one index */

static int sort_record_index(MI_SORT_PARAM *sort_param,MI_INFO *info,
                             MI_KEYDEF *keyinfo,
			     my_off_t page, uchar *buff, uint sort_key,
			     File new_file,my_bool update_index)
{
  uint	nod_flag,used_length,key_length;
  uchar *temp_buff,*keypos,*endpos;
  my_off_t next_page,rec_pos;
  uchar lastkey[MI_MAX_KEY_BUFF];
  char llbuff[22];
  SORT_INFO *sort_info= sort_param->sort_info;
  MI_CHECK *param=sort_info->param;
  DBUG_ENTER("sort_record_index");

  nod_flag=mi_test_if_nod(buff);
  temp_buff=0;

  if (nod_flag)
  {
    if (!(temp_buff=(uchar*) my_alloca((uint) keyinfo->block_length)))
    {
      mi_check_print_error(param,"Not Enough memory");
      DBUG_RETURN(-1);
    }
  }
  used_length=mi_getint(buff);
  keypos=buff+2+nod_flag;
  endpos=buff+used_length;
  for ( ;; )
  {
    if (nod_flag)
    {
      next_page=_mi_kpos(nod_flag,keypos);
      if (my_pread(info->s->kfile,(uchar*) temp_buff,
		  (uint) keyinfo->block_length, next_page,
		   MYF(MY_NABP+MY_WME)))
      {
	mi_check_print_error(param,"Can't read keys from filepos: %s",
		    llstr(next_page,llbuff));
	goto err;
      }
      if (sort_record_index(sort_param, info,keyinfo,next_page,temp_buff,sort_key,
			    new_file, update_index))
	goto err;
    }
    if (keypos >= endpos ||
	(key_length=(*keyinfo->get_key)(keyinfo,nod_flag,&keypos,lastkey))
	== 0)
      break;
    rec_pos= _mi_dpos(info,0,lastkey+key_length);

    if ((*info->s->read_rnd)(info,sort_param->record,rec_pos,0))
    {
      mi_check_print_error(param,"%d when reading datafile",my_errno());
      goto err;
    }
    if (rec_pos != sort_param->filepos && update_index)
    {
      _mi_dpointer(info,keypos-nod_flag-info->s->rec_reflength,
		   sort_param->filepos);
      if (movepoint(info,sort_param->record,rec_pos,sort_param->filepos,
		    sort_key))
      {
	mi_check_print_error(param,"%d when updating key-pointers",my_errno());
	goto err;
      }
    }
    if (sort_write_record(sort_param))
      goto err;
  }
  /* Clear end of block to get better compression if the table is backuped */
  memset(buff+used_length, 0, keyinfo->block_length-used_length);
  if (my_pwrite(info->s->kfile,(uchar*) buff,(uint) keyinfo->block_length,
		page,param->myf_rw))
  {
    mi_check_print_error(param,"%d when updating keyblock",my_errno());
    goto err;
  }
  DBUG_RETURN(0);
err:
  DBUG_RETURN(1);
} /* sort_record_index */



/*
  Check if myisamchk was killed by a signal
  This is overloaded by other programs that want to be able to abort
  sorting
*/

static int not_killed= 0;

volatile int *killed_ptr(MI_CHECK *param MY_ATTRIBUTE((unused)))
{
  return &not_killed;			/* always NULL */
}

	/* print warnings and errors */
	/* VARARGS */

void mi_check_print_info(MI_CHECK *param MY_ATTRIBUTE((unused)),
			 const char *fmt,...)
{
  va_list args;

  va_start(args,fmt);
  (void) vfprintf(stdout, fmt, args);
  (void) fputc('\n',stdout);
  va_end(args);
}

/* VARARGS */

void mi_check_print_warning(MI_CHECK *param, const char *fmt,...)
{
  va_list args;
  DBUG_ENTER("mi_check_print_warning");

  fflush(stdout);
  if (!param->warning_printed && !param->error_printed)
  {
    if (param->testflag & T_SILENT)
      fprintf(stderr,"%s: MyISAM file %s\n",my_progname_short,
	      param->isam_file_name);
    param->out_flag|= O_DATA_LOST;
  }
  param->warning_printed=1;
  va_start(args,fmt);
  fprintf(stderr,"%s: warning: ",my_progname_short);
  (void) vfprintf(stderr, fmt, args);
  (void) fputc('\n',stderr);
  fflush(stderr);
  va_end(args);
  DBUG_VOID_RETURN;
}

/* VARARGS */

void mi_check_print_error(MI_CHECK *param, const char *fmt,...)
{
  va_list args;
  DBUG_ENTER("mi_check_print_error");
  DBUG_PRINT("enter",("format: %s",fmt));

  fflush(stdout);
  if (!param->warning_printed && !param->error_printed)
  {
    if (param->testflag & T_SILENT)
      fprintf(stderr,"%s: MyISAM file %s\n",my_progname_short,param->isam_file_name);
    param->out_flag|= O_DATA_LOST;
  }
  param->error_printed|=1;
  va_start(args,fmt);
  fprintf(stderr,"%s: error: ",my_progname_short);
  (void) vfprintf(stderr, fmt, args);
  (void) fputc('\n',stderr);
  fflush(stderr);
  va_end(args);
  DBUG_VOID_RETURN;
}

#include "mi_extrafunc.h"