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  • Committer: Brian Aker
  • Date: 2009-08-04 06:21:17 UTC
  • mfrom: (1108.2.2 merge)
  • Revision ID: brian@gaz-20090804062117-fef8x6y3ydzrvab3
Merge Brian

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plugin/myisam/mi_open.cc
11
11
 
12
12
   You should have received a copy of the GNU General Public License
13
13
   along with this program; if not, write to the Free Software
14
 
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */
 
14
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
15
15
 
16
16
/* open a isam-database */
17
17
 
18
 
#include "myisam_priv.h"
 
18
#include "myisamdef.h"
 
19
#include <mystrings/m_ctype.h>
 
20
#include <mystrings/m_string.h>
 
21
#include <drizzled/util/test.h>
19
22
 
20
23
#include <string.h>
21
24
#include <algorithm>
22
 
#include <memory>
23
 
#include <boost/scoped_ptr.hpp>
24
 
#include <boost/scoped_array.hpp>
25
 
 
26
 
#include "drizzled/charset_info.h"
27
 
#include "drizzled/internal/m_string.h"
28
 
#include "drizzled/util/test.h"
29
 
#include "drizzled/global_charset_info.h"
30
 
#include "drizzled/charset.h"
31
 
#include "drizzled/memory/multi_malloc.h"
32
 
 
33
25
 
34
26
using namespace std;
35
 
using namespace drizzled;
36
27
 
37
28
static void setup_key_functions(MI_KEYDEF *keyinfo);
38
 
static unsigned char *mi_keydef_read(unsigned char *ptr, MI_KEYDEF *keydef);
39
 
static unsigned char *mi_keyseg_read(unsigned char *ptr, HA_KEYSEG *keyseg);
40
 
static unsigned char *mi_recinfo_read(unsigned char *ptr, MI_COLUMNDEF *recinfo);
41
 
static uint64_t mi_safe_mul(uint64_t a, uint64_t b);
42
 
static unsigned char *mi_state_info_read(unsigned char *ptr, MI_STATE_INFO *state);
43
 
static unsigned char *mi_uniquedef_read(unsigned char *ptr, MI_UNIQUEDEF *def);
44
 
static unsigned char *my_n_base_info_read(unsigned char *ptr, MI_BASE_INFO *base);
45
29
 
46
30
#define disk_pos_assert(pos, end_pos) \
47
31
if (pos > end_pos)             \
48
32
{                              \
49
 
  errno=HA_ERR_CRASHED;     \
 
33
  my_errno=HA_ERR_CRASHED;     \
50
34
  goto err;                    \
51
35
}
52
36
 
79
63
  have an open count of 0.
80
64
******************************************************************************/
81
65
 
82
 
MI_INFO *mi_open(const drizzled::identifier::Table &identifier, int mode, uint32_t open_flags)
 
66
MI_INFO *mi_open(const char *name, int mode, uint32_t open_flags)
83
67
{
84
68
  int lock_error,kfile,open_mode,save_errno,have_rtree=0;
85
69
  uint32_t i,j,len,errpos,head_length,base_pos,offset,info_length,keys,
89
73
  unsigned char *disk_cache= NULL;
90
74
  unsigned char *disk_pos, *end_pos;
91
75
  MI_INFO info,*m_info,*old_info;
92
 
  boost::scoped_ptr<MYISAM_SHARE> share_buff_ap(new MYISAM_SHARE);
93
 
  MYISAM_SHARE &share_buff= *share_buff_ap.get();
94
 
  MYISAM_SHARE *share;
95
 
  boost::scoped_array<ulong> rec_per_key_part_ap(new ulong[HA_MAX_POSSIBLE_KEY*MI_MAX_KEY_SEG]);
96
 
  ulong *rec_per_key_part= rec_per_key_part_ap.get();
97
 
  internal::my_off_t key_root[HA_MAX_POSSIBLE_KEY],key_del[MI_MAX_KEY_BLOCK_SIZE];
 
76
  MYISAM_SHARE share_buff,*share;
 
77
  ulong rec_per_key_part[HA_MAX_POSSIBLE_KEY*MI_MAX_KEY_SEG];
 
78
  my_off_t key_root[HA_MAX_POSSIBLE_KEY],key_del[MI_MAX_KEY_BLOCK_SIZE];
98
79
  uint64_t max_key_file_length, max_data_file_length;
99
80
 
100
81
  kfile= -1;
103
84
  head_length=sizeof(share_buff.state.header);
104
85
  memset(&info, 0, sizeof(info));
105
86
 
106
 
  (void)internal::fn_format(org_name,
107
 
                            identifier.getPath().c_str(), 
108
 
                            "",
109
 
                            MI_NAME_IEXT,
110
 
                            MY_UNPACK_FILENAME);
 
87
  (void)fn_format(org_name,name,"",MI_NAME_IEXT, MY_UNPACK_FILENAME);
111
88
  if (!realpath(org_name,rp_buff))
112
 
    internal::my_load_path(rp_buff,org_name, NULL);
 
89
    my_load_path(rp_buff,org_name, NULL);
113
90
  rp_buff[FN_REFLEN-1]= '\0';
114
91
  strcpy(name_buff,rp_buff);
115
 
  THR_LOCK_myisam.lock();
 
92
  pthread_mutex_lock(&THR_LOCK_myisam);
116
93
  if (!(old_info=test_if_reopen(name_buff)))
117
94
  {
118
95
    share= &share_buff;
120
97
    share_buff.state.rec_per_key_part=rec_per_key_part;
121
98
    share_buff.state.key_root=key_root;
122
99
    share_buff.state.key_del=key_del;
123
 
    share_buff.setKeyCache();
 
100
    share_buff.key_cache= dflt_key_cache;
124
101
 
125
 
    if ((kfile=internal::my_open(name_buff,(open_mode=O_RDWR),MYF(0))) < 0)
 
102
    if ((kfile=my_open(name_buff,(open_mode=O_RDWR),MYF(0))) < 0)
126
103
    {
127
104
      if ((errno != EROFS && errno != EACCES) ||
128
105
          mode != O_RDONLY ||
129
 
          (kfile=internal::my_open(name_buff,(open_mode=O_RDONLY),MYF(0))) < 0)
 
106
          (kfile=my_open(name_buff,(open_mode=O_RDONLY),MYF(0))) < 0)
130
107
        goto err;
131
108
    }
132
109
    share->mode=open_mode;
133
110
    errpos=1;
134
 
    if (internal::my_read(kfile, share->state.header.file_version, head_length,
 
111
    if (my_read(kfile, share->state.header.file_version, head_length,
135
112
                MYF(MY_NABP)))
136
113
    {
137
 
      errno= HA_ERR_NOT_A_TABLE;
 
114
      my_errno= HA_ERR_NOT_A_TABLE;
138
115
      goto err;
139
116
    }
140
117
    if (memcmp(share->state.header.file_version, myisam_file_magic, 4))
141
118
    {
142
 
      errno=HA_ERR_NOT_A_TABLE;
 
119
      my_errno=HA_ERR_NOT_A_TABLE;
143
120
      goto err;
144
121
    }
145
122
    share->options= mi_uint2korr(share->state.header.options);
146
 
    static const uint64_t OLD_FILE_OPTIONS= HA_OPTION_PACK_RECORD |
147
 
            HA_OPTION_PACK_KEYS |
148
 
            HA_OPTION_COMPRESS_RECORD | HA_OPTION_READ_ONLY_DATA |
149
 
            HA_OPTION_TEMP_COMPRESS_RECORD |
150
 
            HA_OPTION_TMP_TABLE;
151
 
    if (share->options & ~OLD_FILE_OPTIONS)
152
 
    {
153
 
      errno=HA_ERR_OLD_FILE;
154
 
      goto err;
155
 
    }
156
 
 
 
123
    if (share->options &
 
124
        ~(HA_OPTION_PACK_RECORD | HA_OPTION_PACK_KEYS |
 
125
          HA_OPTION_COMPRESS_RECORD | HA_OPTION_READ_ONLY_DATA |
 
126
          HA_OPTION_TEMP_COMPRESS_RECORD | HA_OPTION_CHECKSUM |
 
127
          HA_OPTION_TMP_TABLE | HA_OPTION_DELAY_KEY_WRITE |
 
128
          HA_OPTION_RELIES_ON_SQL_LAYER))
 
129
    {
 
130
      my_errno=HA_ERR_OLD_FILE;
 
131
      goto err;
 
132
    }
 
133
    if ((share->options & HA_OPTION_RELIES_ON_SQL_LAYER) &&
 
134
        ! (open_flags & HA_OPEN_FROM_SQL_LAYER))
 
135
    {
 
136
      my_errno= HA_ERR_UNSUPPORTED;
 
137
      goto err;
 
138
    }
157
139
    /* Don't call realpath() if the name can't be a link */
158
140
    ssize_t sym_link_size= readlink(org_name,index_name,FN_REFLEN-1);
159
141
    if (sym_link_size >= 0 )
161
143
    if (!strcmp(name_buff, org_name) || sym_link_size == -1)
162
144
      (void) strcpy(index_name, org_name);
163
145
    *strrchr(org_name, '.')= '\0';
164
 
    (void) internal::fn_format(data_name,org_name,"",MI_NAME_DEXT,
 
146
    (void) fn_format(data_name,org_name,"",MI_NAME_DEXT,
165
147
                     MY_APPEND_EXT|MY_UNPACK_FILENAME|MY_RESOLVE_SYMLINKS);
166
148
 
167
149
    info_length=mi_uint2korr(share->state.header.header_length);
168
150
    base_pos=mi_uint2korr(share->state.header.base_pos);
169
151
    if (!(disk_cache= (unsigned char*) malloc(info_length+128)))
170
152
    {
171
 
      errno=ENOMEM;
 
153
      my_errno=ENOMEM;
172
154
      goto err;
173
155
    }
174
156
    end_pos=disk_cache+info_length;
176
158
 
177
159
    lseek(kfile,0,SEEK_SET);
178
160
    errpos=3;
179
 
    if (internal::my_read(kfile,disk_cache,info_length,MYF(MY_NABP)))
 
161
    if (my_read(kfile,disk_cache,info_length,MYF(MY_NABP)))
180
162
    {
181
 
      errno=HA_ERR_CRASHED;
 
163
      my_errno=HA_ERR_CRASHED;
182
164
      goto err;
183
165
    }
184
166
    len=mi_uint2korr(share->state.header.state_info_length);
194
176
    disk_pos= my_n_base_info_read(disk_cache + base_pos, &share->base);
195
177
    share->state.state_length=base_pos;
196
178
 
197
 
    if (share->state.changed & STATE_CRASHED)
 
179
    if (!(open_flags & HA_OPEN_FOR_REPAIR) &&
 
180
        ((share->state.changed & STATE_CRASHED) ||
 
181
         ((open_flags & HA_OPEN_ABORT_IF_CRASHED) &&
 
182
          (share->state.open_count))))
198
183
    {
199
 
      errno=((share->state.changed & STATE_CRASHED_ON_REPAIR) ?
 
184
      my_errno=((share->state.changed & STATE_CRASHED_ON_REPAIR) ?
200
185
                HA_ERR_CRASHED_ON_REPAIR : HA_ERR_CRASHED_ON_USAGE);
201
186
      goto err;
202
187
    }
204
189
    /* sanity check */
205
190
    if (share->base.keystart > 65535 || share->base.rec_reflength > 8)
206
191
    {
207
 
      errno=HA_ERR_CRASHED;
 
192
      my_errno=HA_ERR_CRASHED;
208
193
      goto err;
209
194
    }
210
195
 
211
196
    if (share->base.max_key_length > MI_MAX_KEY_BUFF || keys > MI_MAX_KEY ||
212
197
        key_parts > MI_MAX_KEY * MI_MAX_KEY_SEG)
213
198
    {
214
 
      errno=HA_ERR_UNSUPPORTED;
 
199
      my_errno=HA_ERR_UNSUPPORTED;
215
200
      goto err;
216
201
    }
217
202
 
230
215
#endif
231
216
    if (share->base.raid_type)
232
217
    {
233
 
      errno=HA_ERR_UNSUPPORTED;
 
218
      my_errno=HA_ERR_UNSUPPORTED;
234
219
      goto err;
235
220
    }
236
 
    share->base.max_data_file_length=(internal::my_off_t) max_data_file_length;
237
 
    share->base.max_key_file_length=(internal::my_off_t) max_key_file_length;
 
221
    share->base.max_data_file_length=(my_off_t) max_data_file_length;
 
222
    share->base.max_key_file_length=(my_off_t) max_key_file_length;
238
223
 
239
224
    if (share->options & HA_OPTION_COMPRESS_RECORD)
240
225
      share->base.max_key_length+=2;    /* For safety */
242
227
    /* Add space for node pointer */
243
228
    share->base.max_key_length+= share->base.key_reflength;
244
229
 
245
 
    if (!drizzled::memory::multi_malloc(false,
246
 
           &share,sizeof(*share),
247
 
           &share->state.rec_per_key_part,sizeof(long)*key_parts,
248
 
           &share->keyinfo,keys*sizeof(MI_KEYDEF),
249
 
           &share->uniqueinfo,uniques*sizeof(MI_UNIQUEDEF),
250
 
           &share->keyparts,
251
 
           (key_parts+unique_key_parts+keys+uniques) * sizeof(HA_KEYSEG),
252
 
           &share->rec, (share->base.fields+1)*sizeof(MI_COLUMNDEF),
253
 
           &share->blobs,sizeof(MI_BLOB)*share->base.blobs,
254
 
           &share->unique_file_name,strlen(name_buff)+1,
255
 
           &share->index_file_name,strlen(index_name)+1,
256
 
           &share->data_file_name,strlen(data_name)+1,
257
 
           &share->state.key_root,keys*sizeof(uint64_t),
258
 
           &share->state.key_del,
259
 
           (share->state.header.max_block_size_index*sizeof(uint64_t)),
260
 
           NULL))
 
230
    if (!my_multi_malloc(MY_WME,
 
231
                         &share,sizeof(*share),
 
232
                         &share->state.rec_per_key_part,sizeof(long)*key_parts,
 
233
                         &share->keyinfo,keys*sizeof(MI_KEYDEF),
 
234
                         &share->uniqueinfo,uniques*sizeof(MI_UNIQUEDEF),
 
235
                         &share->keyparts,
 
236
                         (key_parts+unique_key_parts+keys+uniques) *
 
237
                         sizeof(HA_KEYSEG),
 
238
                         &share->rec,
 
239
                         (share->base.fields+1)*sizeof(MI_COLUMNDEF),
 
240
                         &share->blobs,sizeof(MI_BLOB)*share->base.blobs,
 
241
                         &share->unique_file_name,strlen(name_buff)+1,
 
242
                         &share->index_file_name,strlen(index_name)+1,
 
243
                         &share->data_file_name,strlen(data_name)+1,
 
244
                         &share->state.key_root,keys*sizeof(my_off_t),
 
245
                         &share->state.key_del,
 
246
                         (share->state.header.max_block_size_index*sizeof(my_off_t)),
 
247
                         &share->key_root_lock,sizeof(pthread_rwlock_t)*keys,
 
248
                         &share->mmap_lock,sizeof(pthread_rwlock_t),
 
249
                         NULL))
261
250
      goto err;
262
251
    errpos=4;
263
252
    *share=share_buff;
264
253
    memcpy(share->state.rec_per_key_part, rec_per_key_part,
265
254
           sizeof(long)*key_parts);
266
255
    memcpy(share->state.key_root, key_root,
267
 
           sizeof(internal::my_off_t)*keys);
 
256
           sizeof(my_off_t)*keys);
268
257
    memcpy(share->state.key_del, key_del,
269
 
           sizeof(internal::my_off_t) * share->state.header.max_block_size_index);
 
258
           sizeof(my_off_t) * share->state.header.max_block_size_index);
270
259
    strcpy(share->unique_file_name, name_buff);
271
260
    share->unique_name_length= strlen(name_buff);
272
261
    strcpy(share->index_file_name,  index_name);
290
279
              ! (share->options & (HA_OPTION_COMPRESS_RECORD |
291
280
                                   HA_OPTION_PACK_RECORD)))
292
281
          {
293
 
            errno= HA_ERR_CRASHED;
 
282
            my_errno= HA_ERR_CRASHED;
294
283
            goto err;
295
284
          }
296
285
          if (pos->type == HA_KEYTYPE_TEXT ||
301
290
              pos->charset=default_charset_info;
302
291
            else if (!(pos->charset= get_charset(pos->language)))
303
292
            {
304
 
              errno=HA_ERR_UNKNOWN_CHARSET;
 
293
              my_errno=HA_ERR_UNKNOWN_CHARSET;
305
294
              goto err;
306
295
            }
307
296
          }
333
322
              pos->charset=default_charset_info;
334
323
            else if (!(pos->charset= get_charset(pos->language)))
335
324
            {
336
 
              errno=HA_ERR_UNKNOWN_CHARSET;
 
325
              my_errno=HA_ERR_UNKNOWN_CHARSET;
337
326
              goto err;
338
327
            }
339
328
          }
365
354
    share->rec[i].type=(int) FIELD_LAST;        /* End marker */
366
355
    if (offset > share->base.reclength)
367
356
    {
368
 
      errno= HA_ERR_CRASHED;
 
357
      /* purecov: begin inspected */
 
358
      my_errno= HA_ERR_CRASHED;
369
359
      goto err;
 
360
      /* purecov: end */
370
361
    }
371
362
 
372
363
    if (! lock_error)
397
388
    disk_cache= NULL;
398
389
    mi_setup_functions(share);
399
390
    share->is_log_table= false;
400
 
    if (myisam_concurrent_insert)
 
391
    thr_lock_init(&share->lock);
 
392
    pthread_mutex_init(&share->intern_lock,MY_MUTEX_INIT_FAST);
 
393
    for (i=0; i<keys; i++)
 
394
      pthread_rwlock_init(&share->key_root_lock[i], NULL);
 
395
    pthread_rwlock_init(&share->mmap_lock, NULL);
 
396
    if (!thr_lock_inited)
 
397
    {
 
398
      /* Probably a single threaded program; Don't use concurrent inserts */
 
399
      myisam_concurrent_insert=0;
 
400
    }
 
401
    else if (myisam_concurrent_insert)
401
402
    {
402
403
      share->concurrent_insert=
403
404
        ((share->options & (HA_OPTION_READ_ONLY_DATA | HA_OPTION_TMP_TABLE |
406
407
         (open_flags & HA_OPEN_TMP_TABLE) || have_rtree) ? 0 : 1;
407
408
      if (share->concurrent_insert)
408
409
      {
409
 
        assert(0);
 
410
        share->lock.get_status= mi_get_status;
 
411
        share->lock.copy_status= mi_copy_status;
 
412
        share->lock.update_status= mi_update_status;
 
413
        share->lock.restore_status= mi_restore_status;
 
414
        share->lock.check_status= mi_check_status;
410
415
      }
411
416
    }
412
417
  }
415
420
    share= old_info->s;
416
421
    if (mode == O_RDWR && share->mode == O_RDONLY)
417
422
    {
418
 
      errno=EACCES;                             /* Can't open in write mode */
 
423
      my_errno=EACCES;                          /* Can't open in write mode */
419
424
      goto err;
420
425
    }
421
426
    if (mi_open_datafile(&info, share, old_info->dfile))
425
430
  }
426
431
 
427
432
  /* alloc and set up private structure parts */
428
 
  if (!drizzled::memory::multi_malloc(MY_WME,
429
 
         &m_info,sizeof(MI_INFO),
430
 
         &info.blobs,sizeof(MI_BLOB)*share->base.blobs,
431
 
         &info.buff,(share->base.max_key_block_length*2+
432
 
                     share->base.max_key_length),
433
 
         &info.lastkey,share->base.max_key_length*3+1,
434
 
         &info.first_mbr_key, share->base.max_key_length,
435
 
         &info.filename, identifier.getPath().length()+1,
436
 
         &info.rtree_recursion_state,have_rtree ? 1024 : 0,
437
 
         NULL))
 
433
  if (!my_multi_malloc(MY_WME,
 
434
                       &m_info,sizeof(MI_INFO),
 
435
                       &info.blobs,sizeof(MI_BLOB)*share->base.blobs,
 
436
                       &info.buff,(share->base.max_key_block_length*2+
 
437
                                   share->base.max_key_length),
 
438
                       &info.lastkey,share->base.max_key_length*3+1,
 
439
                       &info.first_mbr_key, share->base.max_key_length,
 
440
                       &info.filename,strlen(name)+1,
 
441
                       &info.rtree_recursion_state,have_rtree ? 1024 : 0,
 
442
                       NULL))
438
443
    goto err;
439
444
  errpos=6;
440
445
 
441
446
  if (!have_rtree)
442
447
    info.rtree_recursion_state= NULL;
443
448
 
444
 
  strcpy(info.filename, identifier.getPath().c_str());
 
449
  strcpy(info.filename,name);
445
450
  memcpy(info.blobs,share->blobs,sizeof(MI_BLOB)*share->base.blobs);
446
451
  info.lastkey2=info.lastkey+share->base.max_key_length;
447
452
 
462
467
  info.bulk_insert=0;
463
468
  info.errkey= -1;
464
469
  info.page_changed=1;
 
470
  pthread_mutex_lock(&share->intern_lock);
465
471
  info.read_record=share->read_record;
466
472
  share->reopen++;
467
473
  share->write_flag=MYF(MY_NABP | MY_WAIT_IF_FULL);
488
494
//    share->tot_locks++;
489
495
    info.lock_type=F_WRLCK;
490
496
  }
491
 
 
492
 
  share->delay_key_write= 1;
 
497
  if (((open_flags & HA_OPEN_DELAY_KEY_WRITE) ||
 
498
      (share->options & HA_OPTION_DELAY_KEY_WRITE)) &&
 
499
      myisam_delay_key_write)
 
500
    share->delay_key_write=1;
493
501
  info.state= &share->state.state;      /* Change global values by default */
 
502
  pthread_mutex_unlock(&share->intern_lock);
494
503
 
495
504
  /* Allocate buffer for one record */
496
505
 
497
506
  /* prerequisites: memset(info, 0) && info->s=share; are met. */
498
 
  if (!mi_alloc_rec_buff(&info, SIZE_MAX, &info.rec_buff))
 
507
  if (!mi_alloc_rec_buff(&info, -1, &info.rec_buff))
499
508
    goto err;
500
509
  memset(info.rec_buff, 0, mi_get_rec_buff_len(&info, info.rec_buff));
501
510
 
502
511
  *m_info=info;
 
512
  thr_lock_data_init(&share->lock,&m_info->lock,(void*) m_info);
503
513
  myisam_open_list.push_front(m_info);
504
514
 
505
 
  THR_LOCK_myisam.unlock();
 
515
  pthread_mutex_unlock(&THR_LOCK_myisam);
506
516
  return(m_info);
507
517
 
508
518
err:
509
519
  if (disk_cache != NULL)
510
520
    free(disk_cache);
511
 
  save_errno=errno ? errno : HA_ERR_END_OF_FILE;
 
521
  save_errno=my_errno ? my_errno : HA_ERR_END_OF_FILE;
512
522
  if ((save_errno == HA_ERR_CRASHED) ||
513
523
      (save_errno == HA_ERR_CRASHED_ON_USAGE) ||
514
524
      (save_errno == HA_ERR_CRASHED_ON_REPAIR))
515
 
    mi_report_error(save_errno, identifier.getPath().c_str());
 
525
    mi_report_error(save_errno, name);
516
526
  switch (errpos) {
517
527
  case 6:
518
528
    free((unsigned char*) m_info);
519
529
    /* fall through */
520
530
  case 5:
521
 
    internal::my_close(info.dfile,MYF(0));
 
531
    my_close(info.dfile,MYF(0));
522
532
    if (old_info)
523
533
      break;                                    /* Don't remove open table */
524
534
    /* fall through */
528
538
  case 3:
529
539
    /* fall through */
530
540
  case 1:
531
 
    internal::my_close(kfile,MYF(0));
 
541
    my_close(kfile,MYF(0));
532
542
    /* fall through */
533
543
  case 0:
534
544
  default:
535
545
    break;
536
546
  }
537
 
  THR_LOCK_myisam.unlock();
538
 
  errno=save_errno;
 
547
  pthread_mutex_unlock(&THR_LOCK_myisam);
 
548
  my_errno=save_errno;
539
549
  return (NULL);
540
550
} /* mi_open */
541
551
 
550
560
    unsigned char *newptr = *buf;
551
561
 
552
562
    /* to simplify initial init of info->rec_buf in mi_open and mi_extra */
553
 
    if (length == SIZE_MAX)
 
563
    if (length == (ulong) -1)
554
564
    {
555
565
      if (info->s->options & HA_OPTION_COMPRESS_RECORD)
556
566
        length= max(info->s->base.pack_reclength, info->s->max_pack_length);
578
588
}
579
589
 
580
590
 
581
 
static uint64_t mi_safe_mul(uint64_t a, uint64_t b)
 
591
uint64_t mi_safe_mul(uint64_t a, uint64_t b)
582
592
{
583
 
  uint64_t max_val= ~ (uint64_t) 0;             /* internal::my_off_t is unsigned */
 
593
  uint64_t max_val= ~ (uint64_t) 0;             /* my_off_t is unsigned */
584
594
 
585
595
  if (!a || max_val / a < b)
586
596
    return max_val;
626
636
  }
627
637
  share->file_read= mi_nommap_pread;
628
638
  share->file_write= mi_nommap_pwrite;
629
 
  share->calc_checksum=0;
 
639
  if (!(share->options & HA_OPTION_CHECKSUM))
 
640
    share->calc_checksum=0;
 
641
  return;
630
642
}
631
643
 
632
644
 
687
699
   Function to save and store the header in the index file (.MYI)
688
700
*/
689
701
 
690
 
uint32_t mi_state_info_write(int file, MI_STATE_INFO *state, uint32_t pWrite)
 
702
uint32_t mi_state_info_write(File file, MI_STATE_INFO *state, uint32_t pWrite)
691
703
{
692
704
  unsigned char  buff[MI_STATE_INFO_SIZE + MI_STATE_EXTRA_SIZE];
693
705
  unsigned char *ptr=buff;
745
757
  if (pWrite & 1)
746
758
    return(my_pwrite(file, buff, (size_t) (ptr-buff), 0L,
747
759
                          MYF(MY_NABP | MY_THREADSAFE)) != 0);
748
 
  return(internal::my_write(file, buff, (size_t) (ptr-buff),
 
760
  return(my_write(file, buff, (size_t) (ptr-buff),
749
761
                       MYF(MY_NABP)) != 0);
750
762
}
751
763
 
752
764
 
753
 
static unsigned char *mi_state_info_read(unsigned char *ptr, MI_STATE_INFO *state)
 
765
unsigned char *mi_state_info_read(unsigned char *ptr, MI_STATE_INFO *state)
754
766
{
755
767
  uint32_t i,keys,key_parts,key_blocks;
756
768
  memcpy(&state->header,ptr, sizeof(state->header));
771
783
  state->state.empty    = mi_sizekorr(ptr);     ptr +=8;
772
784
  state->state.key_empty= mi_sizekorr(ptr);     ptr +=8;
773
785
  state->auto_increment=mi_uint8korr(ptr);      ptr +=8;
774
 
  state->state.checksum=(internal::ha_checksum) mi_uint8korr(ptr);      ptr +=8;
 
786
  state->state.checksum=(ha_checksum) mi_uint8korr(ptr);        ptr +=8;
775
787
  state->process= mi_uint4korr(ptr);            ptr +=4;
776
788
  state->unique = mi_uint4korr(ptr);            ptr +=4;
777
789
  state->status = mi_uint4korr(ptr);            ptr +=4;
803
815
}
804
816
 
805
817
 
806
 
uint32_t mi_state_info_read_dsk(int file, MI_STATE_INFO *state, bool pRead)
 
818
uint32_t mi_state_info_read_dsk(File file, MI_STATE_INFO *state, bool pRead)
807
819
{
808
820
  unsigned char buff[MI_STATE_INFO_SIZE + MI_STATE_EXTRA_SIZE];
809
821
 
810
 
  if (pRead)
 
822
  if (!myisam_single_user)
811
823
  {
812
 
    if (my_pread(file, buff, state->state_length,0L, MYF(MY_NABP)))
 
824
    if (pRead)
 
825
    {
 
826
      if (my_pread(file, buff, state->state_length,0L, MYF(MY_NABP)))
 
827
        return 1;
 
828
    }
 
829
    else if (my_read(file, buff, state->state_length,MYF(MY_NABP)))
813
830
      return 1;
 
831
    mi_state_info_read(buff, state);
814
832
  }
815
 
  else if (internal::my_read(file, buff, state->state_length,MYF(MY_NABP)))
816
 
    return 1;
817
 
  mi_state_info_read(buff, state);
818
 
 
819
833
  return 0;
820
834
}
821
835
 
824
838
**  store and read of MI_BASE_INFO
825
839
****************************************************************************/
826
840
 
827
 
uint32_t mi_base_info_write(int file, MI_BASE_INFO *base)
 
841
uint32_t mi_base_info_write(File file, MI_BASE_INFO *base)
828
842
{
829
843
  unsigned char buff[MI_BASE_INFO_SIZE], *ptr=buff;
830
844
 
857
871
  mi_int4store(ptr,UINT32_C(0));                        ptr +=4;
858
872
 
859
873
  memset(ptr, 0, 6);                                    ptr +=6; /* extra */
860
 
  return internal::my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
 
874
  return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
861
875
}
862
876
 
863
877
 
864
 
static unsigned char *my_n_base_info_read(unsigned char *ptr, MI_BASE_INFO *base)
 
878
unsigned char *my_n_base_info_read(unsigned char *ptr, MI_BASE_INFO *base)
865
879
{
866
880
  base->keystart = mi_sizekorr(ptr);                    ptr +=8;
867
881
  base->max_data_file_length = mi_sizekorr(ptr);        ptr +=8;
899
913
  mi_keydef
900
914
---------------------------------------------------------------------------*/
901
915
 
902
 
uint32_t mi_keydef_write(int file, MI_KEYDEF *keydef)
 
916
uint32_t mi_keydef_write(File file, MI_KEYDEF *keydef)
903
917
{
904
918
  unsigned char buff[MI_KEYDEF_SIZE];
905
919
  unsigned char *ptr=buff;
911
925
  mi_int2store(ptr,keydef->keylength);          ptr +=2;
912
926
  mi_int2store(ptr,keydef->minlength);          ptr +=2;
913
927
  mi_int2store(ptr,keydef->maxlength);          ptr +=2;
914
 
  return internal::my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
 
928
  return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
915
929
}
916
930
 
917
 
static unsigned char *mi_keydef_read(unsigned char *ptr, MI_KEYDEF *keydef)
 
931
unsigned char *mi_keydef_read(unsigned char *ptr, MI_KEYDEF *keydef)
918
932
{
919
933
   keydef->keysegs      = (uint) *ptr++;
920
934
   keydef->key_alg      = *ptr++;               /* Rtree or Btree */
934
948
**  mi_keyseg
935
949
***************************************************************************/
936
950
 
937
 
int mi_keyseg_write(int file, const HA_KEYSEG *keyseg)
 
951
int mi_keyseg_write(File file, const HA_KEYSEG *keyseg)
938
952
{
939
953
  unsigned char buff[HA_KEYSEG_SIZE];
940
954
  unsigned char *ptr=buff;
953
967
  mi_int4store(ptr, pos);
954
968
  ptr+=4;
955
969
 
956
 
  return internal::my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
 
970
  return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
957
971
}
958
972
 
959
973
 
960
 
static unsigned char *mi_keyseg_read(unsigned char *ptr, HA_KEYSEG *keyseg)
 
974
unsigned char *mi_keyseg_read(unsigned char *ptr, HA_KEYSEG *keyseg)
961
975
{
962
976
   keyseg->type         = *ptr++;
963
977
   keyseg->language     = *ptr++;
984
998
  mi_uniquedef
985
999
---------------------------------------------------------------------------*/
986
1000
 
987
 
uint32_t mi_uniquedef_write(int file, MI_UNIQUEDEF *def)
 
1001
uint32_t mi_uniquedef_write(File file, MI_UNIQUEDEF *def)
988
1002
{
989
1003
  unsigned char buff[MI_UNIQUEDEF_SIZE];
990
1004
  unsigned char *ptr=buff;
993
1007
  *ptr++=  (unsigned char) def->key;
994
1008
  *ptr++ = (unsigned char) def->null_are_equal;
995
1009
 
996
 
  return internal::my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
 
1010
  return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
997
1011
}
998
1012
 
999
 
static unsigned char *mi_uniquedef_read(unsigned char *ptr, MI_UNIQUEDEF *def)
 
1013
unsigned char *mi_uniquedef_read(unsigned char *ptr, MI_UNIQUEDEF *def)
1000
1014
{
1001
1015
   def->keysegs = mi_uint2korr(ptr);
1002
1016
   def->key     = ptr[2];
1008
1022
**  MI_COLUMNDEF
1009
1023
***************************************************************************/
1010
1024
 
1011
 
uint32_t mi_recinfo_write(int file, MI_COLUMNDEF *recinfo)
 
1025
uint32_t mi_recinfo_write(File file, MI_COLUMNDEF *recinfo)
1012
1026
{
1013
1027
  unsigned char buff[MI_COLUMNDEF_SIZE];
1014
1028
  unsigned char *ptr=buff;
1017
1031
  mi_int2store(ptr,recinfo->length);    ptr +=2;
1018
1032
  *ptr++ = recinfo->null_bit;
1019
1033
  mi_int2store(ptr,recinfo->null_pos);  ptr+= 2;
1020
 
  return internal::my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
 
1034
  return my_write(file, buff, (size_t) (ptr-buff), MYF(MY_NABP)) != 0;
1021
1035
}
1022
1036
 
1023
 
static unsigned char *mi_recinfo_read(unsigned char *ptr, MI_COLUMNDEF *recinfo)
 
1037
unsigned char *mi_recinfo_read(unsigned char *ptr, MI_COLUMNDEF *recinfo)
1024
1038
{
1025
1039
   recinfo->type=  mi_sint2korr(ptr);   ptr +=2;
1026
1040
   recinfo->length=mi_uint2korr(ptr);   ptr +=2;
1038
1052
exist a dup()-like call that would give us two different file descriptors.
1039
1053
*************************************************************************/
1040
1054
 
1041
 
int mi_open_datafile(MI_INFO *info, MYISAM_SHARE *share, int file_to_dup)
 
1055
int mi_open_datafile(MI_INFO *info, MYISAM_SHARE *share, File file_to_dup)
1042
1056
{
1043
1057
  (void)file_to_dup; 
1044
 
  info->dfile=internal::my_open(share->data_file_name, share->mode,
 
1058
  info->dfile=my_open(share->data_file_name, share->mode,
1045
1059
                      MYF(MY_WME));
1046
1060
  return info->dfile >= 0 ? 0 : 1;
1047
1061
}
1049
1063
 
1050
1064
int mi_open_keyfile(MYISAM_SHARE *share)
1051
1065
{
1052
 
  if ((share->kfile=internal::my_open(share->unique_file_name, share->mode,
 
1066
  if ((share->kfile=my_open(share->unique_file_name, share->mode,
1053
1067
                            MYF(MY_WME))) < 0)
1054
1068
    return 1;
1055
1069
  return 0;