log.cc 24.4 KB
Newer Older
bk@work.mysql.com's avatar
bk@work.mysql.com committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   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 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */


/* logging of commands */
19
/* TODO: Abort logging when we get an error in reading or writing log files */
bk@work.mysql.com's avatar
bk@work.mysql.com committed
20 21 22

#include "mysql_priv.h"
#include "sql_acl.h"
23
#include "sql_repl.h"
bk@work.mysql.com's avatar
bk@work.mysql.com committed
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

#include <my_dir.h>
#include <stdarg.h>
#include <m_ctype.h>				// For test_if_number

MYSQL_LOG mysql_log,mysql_update_log,mysql_slow_log,mysql_bin_log;
extern I_List<i_string> binlog_do_db, binlog_ignore_db;

static bool test_if_number(const char *str,
			   long *res, bool allow_wildcards);

/****************************************************************************
** Find a uniq filename for 'filename.#'.
** Set # to a number as low as possible
** returns != 0 if not possible to get uniq filename
****************************************************************************/

static int find_uniq_filename(char *name)
{
  long		number;
  uint		i,length;
  char		buff[FN_REFLEN];
  struct st_my_dir *dir_info;
  reg1 struct fileinfo *file_info;
  ulong		max_found=0;
  DBUG_ENTER("find_uniq_filename");

  length=dirname_part(buff,name);
  char *start=name+length,*end=strend(start);
  *end='.';
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
54
  length= (uint) (end-start+1);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76

  if (!(dir_info = my_dir(buff,MYF(MY_DONT_SORT))))
  {						// This shouldn't happen
    strmov(end,".1");				// use name+1
    DBUG_RETURN(0);
  }
  file_info= dir_info->dir_entry;
  for (i=dir_info->number_off_files ; i-- ; file_info++)
  {
    if (bcmp(file_info->name,start,length) == 0 &&
	test_if_number(file_info->name+length, &number,0))
    {
      set_if_bigger(max_found,(ulong) number);
    }
  }
  my_dirend(dir_info);

  *end++='.';
  sprintf(end,"%03ld",max_found+1);
  DBUG_RETURN(0);
}

77
MYSQL_LOG::MYSQL_LOG(): last_time(0), query_start(0),index_file(-1),
78 79
			name(0), log_type(LOG_CLOSED),write_error(0),
			inited(0), opened(0), no_rotate(0)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
80 81 82 83 84
{
  /*
    We don't want to intialize LOCK_Log here as the thread system may
    not have been initailized yet. We do it instead at 'open'.
  */
85 86
  index_file_name[0] = 0;
  bzero((char*) &log_file,sizeof(log_file));
bk@work.mysql.com's avatar
bk@work.mysql.com committed
87 88 89 90 91
}

MYSQL_LOG::~MYSQL_LOG()
{
  if (inited)
92 93 94 95
  {
    (void) pthread_mutex_destroy(&LOCK_log);
    (void) pthread_mutex_destroy(&LOCK_index);
  }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
96 97 98 99 100 101 102 103 104 105 106
}

void MYSQL_LOG::set_index_file_name(const char* index_file_name)
{
  if (index_file_name)
    fn_format(this->index_file_name,index_file_name,mysql_data_home,"-index",
	      4);
  else
    this->index_file_name[0] = 0;
}

107

bk@work.mysql.com's avatar
bk@work.mysql.com committed
108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
int MYSQL_LOG::generate_new_name(char *new_name, const char *log_name)
{      
  if (log_type == LOG_NORMAL)
    fn_format(new_name,log_name,mysql_data_home,"",4);
  else
  {
    fn_format(new_name,log_name,mysql_data_home,"",4);
    if (!fn_ext(log_name)[0])
    {
      if (find_uniq_filename(new_name))
      {
	sql_print_error(ER(ER_NO_UNIQUE_LOGFILE), log_name);
	return 1;
      }
    }
  }
  return 0;
}


void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
		     const char *new_name)
{
131 132
  MY_STAT tmp_stat;
  char buff[512];
133 134
  File file= -1;
  bool do_magic;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
135 136 137 138 139 140

  if (!inited)
  {
    inited=1;
    (void) pthread_mutex_init(&LOCK_log,NULL);
    (void) pthread_mutex_init(&LOCK_index, NULL);
141
    if (log_type_arg == LOG_BIN && *fn_ext(log_name))
sasha@mysql.sashanet.com's avatar
sasha@mysql.sashanet.com committed
142
      no_rotate = 1;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
143
  }
144
  
bk@work.mysql.com's avatar
bk@work.mysql.com committed
145
  log_type=log_type_arg;
146 147
  if (!(name=my_strdup(log_name,MYF(MY_WME))))
    goto err;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
148 149 150
  if (new_name)
    strmov(log_file_name,new_name);
  else if (generate_new_name(log_file_name, name))
151
    goto err;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
152 153 154 155 156

  if (log_type == LOG_BIN && !index_file_name[0])
    fn_format(index_file_name, name, mysql_data_home, ".index", 6);
  
  db[0]=0;
157 158
  do_magic = ((log_type == LOG_BIN) && !my_stat(log_file_name,
						&tmp_stat, MYF(0)));
sasha@mysql.sashanet.com's avatar
sasha@mysql.sashanet.com committed
159
  
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
160
  if ((file=my_open(log_file_name,O_CREAT | O_APPEND | O_WRONLY | O_BINARY,
161 162 163 164
		    MYF(MY_WME | ME_WAITTANG))) < 0 ||
      init_io_cache(&log_file, file, IO_SIZE, WRITE_CACHE,
		    my_tell(file,MYF(MY_WME)), 0, MYF(MY_WME | MY_NABP)))
    goto err;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
165 166 167

  if (log_type == LOG_NORMAL)
  {
168
    char *end;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
169
#ifdef __NT__
170
    sprintf(buff, "%s, Version: %s, started with:\nTCP Port: %d, Named Pipe: %s\n", my_progname, server_version, mysql_port, mysql_unix_port);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
171
#else
172
    sprintf(buff, "%s, Version: %s, started with:\nTcp port: %d  Unix socket: %s\n", my_progname,server_version,mysql_port,mysql_unix_port);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
173
#endif
174
    end=strmov(strend(buff),"Time                 Id Command    Argument\n");
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
175
    if (my_b_write(&log_file, (byte*) buff,(uint) (end-buff)) ||
176 177
	flush_io_cache(&log_file))
      goto err;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
178 179 180 181 182 183
  }
  else if (log_type == LOG_NEW)
  {
    time_t skr=time(NULL);
    struct tm tm_tmp;
    localtime_r(&skr,&tm_tmp);
184
    sprintf(buff,"# %s, Version: %s at %02d%02d%02d %2d:%02d:%02d\n",
bk@work.mysql.com's avatar
bk@work.mysql.com committed
185 186 187 188 189 190 191
	    my_progname,server_version,
	    tm_tmp.tm_year % 100,
	    tm_tmp.tm_mon+1,
	    tm_tmp.tm_mday,
	    tm_tmp.tm_hour,
	    tm_tmp.tm_min,
	    tm_tmp.tm_sec);
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
192
    if (my_b_write(&log_file, (byte*) buff,(uint) strlen(buff)) ||
193 194
	flush_io_cache(&log_file))
      goto err;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
195 196 197
  }
  else if (log_type == LOG_BIN)
  {
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
198 199 200 201 202 203 204
    /*
      Explanation of the boolean black magic:
      if we are supposed to write magic number try write
      clean up if failed
      then if index_file has not been previously opened, try to open it
      clean up if failed
    */
205
    if ((do_magic && my_b_write(&log_file, (byte*) BINLOG_MAGIC, 4)) ||
206
	(index_file < 0 && 
207
	 (index_file = my_open(index_file_name,
monty@narttu.mysql.fi's avatar
merge  
monty@narttu.mysql.fi committed
208
			       O_APPEND | O_BINARY | O_RDWR | O_CREAT,
209 210
			       MYF(MY_WME))) < 0))
      goto err;
sasha@mysql.sashanet.com's avatar
sasha@mysql.sashanet.com committed
211
    Start_log_event s;
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
212
    bool error;
213
    s.write(&log_file);
214
    flush_io_cache(&log_file);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
215
    pthread_mutex_lock(&LOCK_index);
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
216
    error=(my_write(index_file, (byte*) log_file_name, strlen(log_file_name),
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
217
		    MYF(MY_NABP | MY_WME)) ||
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
218
	   my_write(index_file, (byte*) "\n", 1, MYF(MY_NABP | MY_WME)));
bk@work.mysql.com's avatar
bk@work.mysql.com committed
219
    pthread_mutex_unlock(&LOCK_index);
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
220 221 222 223 224 225
    if (error)
    {
      my_close(index_file,MYF(0));
      index_file= -1;
      goto err;
    }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
226
  }
227 228 229
  return;

err:
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
230
  sql_print_error("Could not use %s for logging (error %d)", log_name,errno);
231 232 233 234 235 236 237 238
  if (file >= 0)
    my_close(file,MYF(0));
  end_io_cache(&log_file);
  x_free(name); name=0;
  log_type=LOG_CLOSED;

  return;
  
bk@work.mysql.com's avatar
bk@work.mysql.com committed
239 240 241 242 243
}

int MYSQL_LOG::get_current_log(LOG_INFO* linfo)
{
  pthread_mutex_lock(&LOCK_log);
244 245
  strmake(linfo->log_file_name, log_file_name, sizeof(linfo->log_file_name)-1);
  linfo->pos = my_b_tell(&log_file);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
246 247 248 249 250 251 252
  pthread_mutex_unlock(&LOCK_log);
  return 0;
}

// if log_name is "" we stop at the first entry
int MYSQL_LOG::find_first_log(LOG_INFO* linfo, const char* log_name)
{
253 254
  if (index_file < 0)
    return LOG_INFO_INVALID;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
255 256
  int error = 0;
  char* fname = linfo->log_file_name;
257
  uint log_name_len = (uint) strlen(log_name);
258
  IO_CACHE io_cache;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
259

260 261
  // mutex needed because we need to make sure the file pointer does not move
  // from under our feet
bk@work.mysql.com's avatar
bk@work.mysql.com committed
262
  pthread_mutex_lock(&LOCK_index);
263 264
  if (init_io_cache(&io_cache, index_file, IO_SIZE, READ_CACHE, (my_off_t) 0,
		    0, MYF(MY_WME)))
265 266 267 268 269 270
  {
    error = LOG_INFO_SEEK;
    goto err;
  }
  for(;;)
  {
271 272
    uint length;
    if (!(length=my_b_gets(&io_cache, fname, FN_REFLEN)))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
273
    {
274
      error = !io_cache.error ? LOG_INFO_EOF : LOG_INFO_IO;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
275 276 277
      goto err;
    }

278 279
    // if the log entry matches, empty string matching anything
    if (!log_name_len ||
sasha@mysql.sashanet.com's avatar
sasha@mysql.sashanet.com committed
280
	(log_name_len == length-1 && fname[log_name_len] == '\n' &&
281
	 !memcmp(fname, log_name, log_name_len)))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
282
    {
283 284
      fname[length-1]=0;			// remove last \n
      linfo->index_file_offset = my_b_tell(&io_cache);
285
      break;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
286
    }
287
  }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
288
  error = 0;
289

bk@work.mysql.com's avatar
bk@work.mysql.com committed
290 291
err:
  pthread_mutex_unlock(&LOCK_index);
292
  end_io_cache(&io_cache);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
293 294 295
  return error;
     
}
296

297

bk@work.mysql.com's avatar
bk@work.mysql.com committed
298 299 300 301
int MYSQL_LOG::find_next_log(LOG_INFO* linfo)
{
  // mutex needed because we need to make sure the file pointer does not move
  // from under our feet
302
  if (index_file < 0) return LOG_INFO_INVALID;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
303 304
  int error = 0;
  char* fname = linfo->log_file_name;
305 306
  IO_CACHE io_cache;
  uint length;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
307

308 309 310 311 312 313 314 315 316 317 318 319 320 321 322
  pthread_mutex_lock(&LOCK_index);
  if (init_io_cache(&io_cache, index_file, IO_SIZE, 
		    READ_CACHE, (my_off_t) linfo->index_file_offset, 0,
		    MYF(MY_WME)))
  {
    error = LOG_INFO_SEEK;
    goto err;
  }
  if (!(length=my_b_gets(&io_cache, fname, FN_REFLEN)))
  {
    error = !io_cache.error ? LOG_INFO_EOF : LOG_INFO_IO;
    goto err;
  }
  fname[length-1]=0;				// kill /n
  linfo->index_file_offset = my_b_tell(&io_cache);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
323
  error = 0;
324

bk@work.mysql.com's avatar
bk@work.mysql.com committed
325 326
err:
  pthread_mutex_unlock(&LOCK_index);
327
  end_io_cache(&io_cache);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
328 329 330
  return error;
}

monty@narttu.mysql.fi's avatar
merge  
monty@narttu.mysql.fi committed
331
 
332 333
int MYSQL_LOG::purge_logs(THD* thd, const char* to_log)
{
334 335
  if (index_file < 0) return LOG_INFO_INVALID;
  if (no_rotate) return LOG_INFO_PURGE_NO_ROTATE;
336 337
  int error;
  char fname[FN_REFLEN];
338
  char *p;
339 340 341 342
  uint fname_len, i;
  bool logs_to_purge_inited = 0, logs_to_keep_inited = 0, found_log = 0;
  DYNAMIC_ARRAY logs_to_purge, logs_to_keep;
  my_off_t purge_offset ;
sasha@laptop.slkc.uswest.net's avatar
sasha@laptop.slkc.uswest.net committed
343
  LINT_INIT(purge_offset);
344
  IO_CACHE io_cache;
345
  
346 347
  pthread_mutex_lock(&LOCK_index);
  
348 349 350 351 352 353 354 355 356 357 358
  if (init_io_cache(&io_cache,index_file, IO_SIZE*2, READ_CACHE, (my_off_t) 0,
		    0, MYF(MY_WME)))
  {
    error = LOG_INFO_MEM;
    goto err;
  }
  if (init_dynamic_array(&logs_to_purge, sizeof(char*), 1024, 1024))
  {
    error = LOG_INFO_MEM;
    goto err;
  }
359 360
  logs_to_purge_inited = 1;
  
361 362 363 364 365
  if (init_dynamic_array(&logs_to_keep, sizeof(char*), 1024, 1024))
  {
    error = LOG_INFO_MEM;
    goto err;
  }
366 367 368 369
  logs_to_keep_inited = 1;

  
  for(;;)
370 371 372
  {
    my_off_t init_purge_offset= my_b_tell(&io_cache);
    if (!(fname_len=my_b_gets(&io_cache, fname, FN_REFLEN)))
373
    {
374 375 376 377 378 379 380 381 382 383 384 385
      if(!io_cache.error)
	break;
      error = LOG_INFO_IO;
      goto err;
    }

    fname[--fname_len]=0;			// kill \n
    if(!memcmp(fname, to_log, fname_len + 1 ))
    {
      found_log = 1;
      purge_offset = init_purge_offset;
    }
386
      
387 388 389 390 391 392
    // if one of the logs before the target is in use
    if(!found_log && log_in_use(fname))
    {
      error = LOG_INFO_IN_USE;
      goto err;
    }
393
      
394
    if (!(p = sql_memdup(fname, fname_len+1)) ||
395 396
	insert_dynamic(found_log ? &logs_to_keep : &logs_to_purge,
		       (gptr) &p))
397
    {
398
      error = LOG_INFO_MEM;
399 400
      goto err;
    }
401 402 403 404 405 406 407 408
  }
  
  end_io_cache(&io_cache);
  if(!found_log)
  {
    error = LOG_INFO_EOF;
    goto err;
  }
409 410
  
  for(i = 0; i < logs_to_purge.elements; i++)
411 412 413 414 415 416
  {
    char* l;
    get_dynamic(&logs_to_purge, (gptr)&l, i);
    if (my_delete(l, MYF(MY_WME)))
      sql_print_error("Error deleting %s during purge", l);
  }
417 418 419 420
  
  // if we get killed -9 here, the sysadmin would have to do a small
  // vi job on the log index file after restart - otherwise, this should
  // be safe
421 422 423
#ifdef HAVE_FTRUNCATE
  if (ftruncate(index_file,0))
  {
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
424
    sql_print_error("Could not truncate the binlog index file \
425 426 427 428 429 430 431 432
during log purge for write");
    error = LOG_INFO_FATAL;
    goto err;
  }
  my_seek(index_file, 0, MY_SEEK_CUR,MYF(MY_WME));
#else
  my_close(index_file, MYF(MY_WME));
  my_delete(index_file_name, MYF(MY_WME));
433
  if(!(index_file = my_open(index_file_name,
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
434
			    O_CREAT | O_BINARY | O_RDWR | O_APPEND,
435
			    MYF(MY_WME))))
436
  {
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
437
    sql_print_error("Could not re-open the binlog index file \
438 439 440 441
during log purge for write");
    error = LOG_INFO_FATAL;
    goto err;
  }
442
#endif
443 444
  
  for(i = 0; i < logs_to_keep.elements; i++)
445 446 447
  {
    char* l;
    get_dynamic(&logs_to_keep, (gptr)&l, i);
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
448 449
    if (my_write(index_file, (byte*) l, strlen(l), MYF(MY_WME|MY_NABP)) ||
	my_write(index_file, (byte*) "\n", 1, MYF(MY_WME|MY_NABP)))
450
    {
451 452
      error = LOG_INFO_FATAL;
      goto err;
453 454
    }
  }
455

456 457 458
  // now update offsets
  adjust_linfo_offsets(purge_offset);
  error = 0;
459

460 461 462 463 464 465
err:
  pthread_mutex_unlock(&LOCK_index);
  if(logs_to_purge_inited)
    delete_dynamic(&logs_to_purge);
  if(logs_to_keep_inited)
    delete_dynamic(&logs_to_keep);
466
  end_io_cache(&io_cache);
467 468 469
  return error;
}

470

bk@work.mysql.com's avatar
bk@work.mysql.com committed
471 472 473
// we assume that buf has at least FN_REFLEN bytes alloced
void MYSQL_LOG::make_log_name(char* buf, const char* log_ident)
{
474
  buf[0] = 0;					// In case of error
475
  if (inited)
476 477 478 479 480
  {
    int dir_len = dirname_length(log_file_name); 
    int ident_len = (uint) strlen(log_ident);
    if (dir_len + ident_len + 1 > FN_REFLEN)
      return; // protection agains malicious buffer overflow
bk@work.mysql.com's avatar
bk@work.mysql.com committed
481
      
482 483 484 485
    memcpy(buf, log_file_name, dir_len);
    // copy filename + end null
    memcpy(buf + dir_len, log_ident, ident_len + 1);
  }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
486 487 488 489 490 491 492 493 494
}

bool MYSQL_LOG::is_active(const char* log_file_name)
{
  return inited && !strcmp(log_file_name, this->log_file_name);
}

void MYSQL_LOG::new_file()
{
495 496 497
  // only rotate open logs that are marked non-rotatable
  // (binlog with constant name are non-rotatable)
  if (is_open() && ! no_rotate)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
498 499 500 501
  {
    char new_name[FN_REFLEN], *old_name=name;
    VOID(pthread_mutex_lock(&LOCK_log));
    if (generate_new_name(new_name, name))
502 503
    {
      VOID(pthread_mutex_unlock(&LOCK_log));
bk@work.mysql.com's avatar
bk@work.mysql.com committed
504
      return;					// Something went wrong
505
    }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
506 507 508 509 510 511 512
    if (log_type == LOG_BIN)
    {
      /*
	We log the whole file name for log file as the user may decide
	to change base names at some point.
      */
      Rotate_log_event r(new_name+dirname_length(new_name));
513
      r.write(&log_file);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
514 515 516 517 518 519 520 521 522 523 524 525 526
      VOID(pthread_cond_broadcast(&COND_binlog_update));
    }
    name=0;
    close();
    open(old_name, log_type, new_name);
    my_free(old_name,MYF(0));
    last_time=query_start=0;
    write_error=0;
    VOID(pthread_mutex_unlock(&LOCK_log));
  }
}


527
bool MYSQL_LOG::write(THD *thd,enum enum_server_command command,
bk@work.mysql.com's avatar
bk@work.mysql.com committed
528 529
		      const char *format,...)
{
530
  if (is_open() && (what_to_log & (1L << (uint) command)))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
531
  {
532
    int error=0;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
533
    VOID(pthread_mutex_lock(&LOCK_log));
534 535

    /* Test if someone closed after the is_open test */
bk@work.mysql.com's avatar
bk@work.mysql.com committed
536 537 538 539
    if (log_type != LOG_CLOSED)
    {
      time_t skr;
      ulong id;
540 541 542 543
      va_list args;
      va_start(args,format);
      char buff[32];

bk@work.mysql.com's avatar
bk@work.mysql.com committed
544 545 546 547 548 549
      if (thd)
      {						// Normal thread
	if ((thd->options & OPTION_LOG_OFF) &&
	    (thd->master_access & PROCESS_ACL))
	{
	  VOID(pthread_mutex_unlock(&LOCK_log));
550
	  return 0;				// No logging
bk@work.mysql.com's avatar
bk@work.mysql.com committed
551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567
	}
	id=thd->thread_id;
	if (thd->user_time || !(skr=thd->query_start()))
	  skr=time(NULL);			// Connected
      }
      else
      {						// Log from connect handler
	skr=time(NULL);
	id=0;
      }
      if (skr != last_time)
      {
	last_time=skr;
	struct tm tm_tmp;
	struct tm *start;
	localtime_r(&skr,&tm_tmp);
	start=&tm_tmp;
568 569 570 571 572 573 574 575
	/* Note that my_b_write() assumes it knows the length for this */
	sprintf(buff,"%02d%02d%02d %2d:%02d:%02d\t",
		start->tm_year % 100,
		start->tm_mon+1,
		start->tm_mday,
		start->tm_hour,
		start->tm_min,
		start->tm_sec);
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
576
	if (my_b_write(&log_file, (byte*) buff,16))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
577 578
	  error=errno;
      }
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
579
      else if (my_b_write(&log_file, (byte*) "\t\t",2) < 0)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
580
	error=errno;
581
      sprintf(buff,"%7ld %-10.10s", id,command_name[(uint) command]);
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
582
      if (my_b_write(&log_file, (byte*) buff,strlen(buff)))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
583 584 585
	error=errno;
      if (format)
      {
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
586
	if (my_b_write(&log_file, (byte*) " ",1) ||
587
	    my_b_vprintf(&log_file,format,args) == (uint) -1)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
588 589
	  error=errno;
      }
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
590
      if (my_b_write(&log_file, (byte*) "\n",1) ||
591
	  flush_io_cache(&log_file))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
592 593 594 595 596 597
	error=errno;
      if (error && ! write_error)
      {
	write_error=1;
	sql_print_error(ER(ER_ERROR_ON_WRITE),name,error);
      }
598
      va_end(args);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
599 600
    }
    VOID(pthread_mutex_unlock(&LOCK_log));
601
    return error != 0;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
602
  }
603
  return 0;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
604 605 606 607
}

/* Write to binary log in a format to be used for replication */

608
bool MYSQL_LOG::write(Query_log_event* event_info)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
609
{
610 611 612
  /* In most cases this is only called if 'is_open()' is true */
  bool error=1;
  VOID(pthread_mutex_lock(&LOCK_log));
613
  if (is_open())
bk@work.mysql.com's avatar
bk@work.mysql.com committed
614
  {
615 616 617 618 619 620
    THD *thd=event_info->thd;
    IO_CACHE *file = (event_info->cache_stmt ? &thd->transaction.trans_log :
		      &log_file);
    if ((!(thd->options & OPTION_BIN_LOG) &&
	 thd->master_access & PROCESS_ACL) ||
	!db_ok(event_info->db, binlog_do_db, binlog_ignore_db))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
621
    {
622 623 624
      VOID(pthread_mutex_unlock(&LOCK_log));
      return 0;
    }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
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
    if (thd->last_insert_id_used)
    {
      Intvar_log_event e((uchar)LAST_INSERT_ID_EVENT, thd->last_insert_id);
      if (e.write(file))
	goto err;
    }
    if (thd->insert_id_used)
    {
      Intvar_log_event e((uchar)INSERT_ID_EVENT, thd->last_insert_id);
      if (e.write(file))
	goto err;
    }
    if (thd->convert_set)
    {
      char buf[1024] = "SET CHARACTER SET ";
      char* p = strend(buf);
      p = strmov(p, thd->convert_set->name);
      int save_query_length = thd->query_length;
      // just in case somebody wants it later
      thd->query_length = (uint)(p - buf);
      Query_log_event e(thd, buf);
      if (e.write(file))
	goto err;
      thd->query_length = save_query_length; // clean up
    }
    if (event_info->write(file) ||
	file == &log_file && flush_io_cache(file))
      goto err;
    error=0;

err:
    if (error)
    {
      if (my_errno == EFBIG)
	my_error(ER_TRANS_CACHE_FULL, MYF(0));
      else
	my_error(ER_ERROR_ON_WRITE, MYF(0), name, errno);
      write_error=1;
    }
    if (file == &log_file)
      VOID(pthread_cond_broadcast(&COND_binlog_update));
  }
  else
    error=0;
  VOID(pthread_mutex_unlock(&LOCK_log));
  return error;
}

/*
  Write a cached log entry to the binary log
  We only come here if there is something in the cache.
  'cache' needs to be reinitialized after this functions returns.
*/

bool MYSQL_LOG::write(IO_CACHE *cache)
{
  VOID(pthread_mutex_lock(&LOCK_log));
  bool error=1;
  if (is_open())
  {
    uint length;
    my_off_t start_pos=my_b_tell(&log_file);

    if (reinit_io_cache(cache, WRITE_CACHE, 0, 0, 0))
    {
      if (!write_error)
	sql_print_error(ER(ER_ERROR_ON_WRITE), cache->file_name, errno);
      goto err;
    }
    while ((length=my_b_fill(cache)))
    {
      if (my_b_write(&log_file, cache->rc_pos, length))
698
      {
699
	if (!write_error)
700
	  sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
701
	goto err;
702
      }
703 704 705 706 707
      cache->rc_pos=cache->rc_end;		// Mark buffer used up
    }
    if (flush_io_cache(&log_file))
    {
      if (!write_error)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
708
	sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
709 710 711 712 713 714 715
      goto err;
    }
    if (cache->error)				// Error on read
    {
      if (!write_error)
	sql_print_error(ER(ER_ERROR_ON_READ), cache->file_name, errno);
      goto err;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
716 717
    }
  }
718 719 720 721 722 723 724 725 726 727
  error=0;

err:
  if (error)
    write_error=1;
  else
    VOID(pthread_cond_broadcast(&COND_binlog_update));
    
  VOID(pthread_mutex_unlock(&LOCK_log));    
  return error;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
728 729
}

730 731

bool MYSQL_LOG::write(Load_log_event* event_info)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
732
{
733 734
  bool error=0;
  VOID(pthread_mutex_lock(&LOCK_log));
735
  if (is_open())
bk@work.mysql.com's avatar
bk@work.mysql.com committed
736
  {
737 738 739
    THD *thd=event_info->thd;
    if ((thd->options & OPTION_BIN_LOG) ||
	!(thd->master_access & PROCESS_ACL))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
740
    {
741
      if (event_info->write(&log_file) || flush_io_cache(&log_file))
bk@work.mysql.com's avatar
bk@work.mysql.com committed
742
      {
743
	if (!write_error)
744
	  sql_print_error(ER(ER_ERROR_ON_WRITE), name, errno);
745
	error=write_error=1;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
746
      }
747
      VOID(pthread_cond_broadcast(&COND_binlog_update));
bk@work.mysql.com's avatar
bk@work.mysql.com committed
748 749
    }
  }
750 751
  VOID(pthread_mutex_unlock(&LOCK_log));
  return error;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
752 753 754 755 756
}


/* Write update log in a format suitable for incremental backup */

757
bool MYSQL_LOG::write(THD *thd,const char *query, uint query_length,
758
		      time_t query_start)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
759
{
760
  bool error=0;
761
  if (is_open())
bk@work.mysql.com's avatar
bk@work.mysql.com committed
762
  {
763
    time_t current_time;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
764
    VOID(pthread_mutex_lock(&LOCK_log));
765
    if (is_open())
bk@work.mysql.com's avatar
bk@work.mysql.com committed
766
    {						// Safety agains reopen
767
      int tmp_errno=0;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
768 769 770 771 772 773
      char buff[80],*end;
      end=buff;
      if (!(thd->options & OPTION_UPDATE_LOG) &&
	  (thd->master_access & PROCESS_ACL))
      {
	VOID(pthread_mutex_unlock(&LOCK_log));
774
	return 0;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
775
      }
776
      if ((specialflag & SPECIAL_LONG_LOG_FORMAT) || query_start)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
777
      {
778 779
	current_time=time(NULL);
	if (current_time != last_time)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
780
	{
781
	  last_time=current_time;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
782 783
	  struct tm tm_tmp;
	  struct tm *start;
784
	  localtime_r(&current_time,&tm_tmp);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
785
	  start=&tm_tmp;
786 787 788 789 790 791 792 793
	  /* Note that my_b_write() assumes it knows the length for this */
	  sprintf(buff,"# Time: %02d%02d%02d %2d:%02d:%02d\n",
		  start->tm_year % 100,
		  start->tm_mon+1,
		  start->tm_mday,
		  start->tm_hour,
		  start->tm_min,
		  start->tm_sec);
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
794
	  if (my_b_write(&log_file, (byte*) buff,24))
795
	    tmp_errno=errno;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
796
	}
797
	if (my_b_printf(&log_file, "# User@Host: %s[%s] @ %s [%s]\n",
798 799 800
			thd->priv_user,
			thd->user,
			thd->host ? thd->host : "",
801
			thd->ip ? thd->ip : "") == (uint) -1)
802
	  tmp_errno=errno;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
803
      }
804 805 806
      if (query_start)
      {
	/* For slow query log */
807 808 809 810
	if (my_b_printf(&log_file,
			"# Time: %lu  Lock_time: %lu  Rows_sent: %lu\n",
			(ulong) (current_time - query_start),
			(ulong) (thd->time_after_lock - query_start),
811
			(ulong) thd->sent_row_count) == (uint) -1)
812
	    tmp_errno=errno;
813
      }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
814 815
      if (thd->db && strcmp(thd->db,db))
      {						// Database changed
816
	if (my_b_printf(&log_file,"use %s;\n",thd->db) == (uint) -1)
817
	  tmp_errno=errno;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
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
	strmov(db,thd->db);
      }
      if (thd->last_insert_id_used)
      {
	end=strmov(end,",last_insert_id=");
	end=longlong10_to_str((longlong) thd->current_insert_id,end,-10);
      }
      // Save value if we do an insert.
      if (thd->insert_id_used)
      {
	if (specialflag & SPECIAL_LONG_LOG_FORMAT)
	{
	  end=strmov(end,",insert_id=");
	  end=longlong10_to_str((longlong) thd->last_insert_id,end,-10);
	}
      }
      if (thd->query_start_used)
      {
	if (query_start != thd->query_start())
	{
	  query_start=thd->query_start();
	  end=strmov(end,",timestamp=");
	  end=int10_to_str((long) query_start,end,10);
	}
      }
      if (end != buff)
      {
	*end++=';';
	*end++='\n';
	*end=0;
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
848 849
	if (my_b_write(&log_file, (byte*) "SET ",4) ||
	    my_b_write(&log_file, (byte*) buff+1,(uint) (end-buff)-1))
850
	  tmp_errno=errno;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
851 852 853 854 855 856
      }
      if (!query)
      {
	query="#adminstrator command";
	query_length=21;
      }
monty@donna.mysql.com's avatar
monty@donna.mysql.com committed
857 858
      if (my_b_write(&log_file, (byte*) query,query_length) ||
	  my_b_write(&log_file, (byte*) ";\n",2) ||
859
	  flush_io_cache(&log_file))
860 861
	tmp_errno=errno;
      if (tmp_errno)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
862
      {
863 864 865 866 867 868
	error=1;
	if (! write_error)
	{
	  write_error=1;
	  sql_print_error(ER(ER_ERROR_ON_WRITE),name,error);
	}
bk@work.mysql.com's avatar
bk@work.mysql.com committed
869 870 871 872
      }
    }
    VOID(pthread_mutex_unlock(&LOCK_log));
  }
873
  return error;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
874 875 876 877 878
}


void MYSQL_LOG::close(bool exiting)
{					// One can't set log_type here!
879
  if (is_open())
bk@work.mysql.com's avatar
bk@work.mysql.com committed
880
  {
881
    File file=log_file.file;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
882 883 884
    if (log_type == LOG_BIN)
    {
      Stop_log_event s;
885
      s.write(&log_file);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
886 887
      VOID(pthread_cond_broadcast(&COND_binlog_update));
    }
888 889
    end_io_cache(&log_file);
    if (my_close(file,MYF(0)) < 0 && ! write_error)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
890 891 892 893 894
    {
      write_error=1;
      sql_print_error(ER(ER_ERROR_ON_WRITE),name,errno);
    }
  }
895
  if (exiting && index_file >= 0)
896
  {
897
    if (my_close(index_file,MYF(0)) < 0 && ! write_error)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
898
    {
899 900
      write_error=1;
      sql_print_error(ER(ER_ERROR_ON_WRITE),name,errno);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
901
    }
902 903
    index_file=-1;
    log_type=LOG_CLOSED;
904
  }
905
  safeFree(name);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
}


	/* Check if a string is a valid number */
	/* Output: TRUE -> number */

static bool test_if_number(register const char *str,
			   long *res, bool allow_wildcards)
{
  reg2 int flag;
  const char *start;
  DBUG_ENTER("test_if_number");

  flag=0; start=str;
  while (*str++ == ' ') ;
  if (*--str == '-' || *str == '+')
    str++;
  while (isdigit(*str) || (allow_wildcards &&
			   (*str == wild_many || *str == wild_one)))
  {
    flag=1;
    str++;
  }
  if (*str == '.')
  {
    for (str++ ;
	 isdigit(*str) ||
	   (allow_wildcards && (*str == wild_many || *str == wild_one)) ;
	 str++, flag=1) ;
  }
  if (*str != 0 || flag == 0)
    DBUG_RETURN(0);
  if (res)
    *res=atol(start);
  DBUG_RETURN(1);			/* Number ok */
} /* test_if_number */


void sql_print_error(const char *format,...)
{
  va_list args;
  time_t skr;
  struct tm tm_tmp;
  struct tm *start;
  va_start(args,format);
  DBUG_ENTER("sql_print_error");

  VOID(pthread_mutex_lock(&LOCK_error_log));
#ifndef DBUG_OFF
  {
    char buff[1024];
    vsprintf(buff,format,args);
    DBUG_PRINT("error",("%s",buff));
  }
#endif
  skr=time(NULL);
  localtime_r(&skr,&tm_tmp);
  start=&tm_tmp;
  fprintf(stderr,"%02d%02d%02d %2d:%02d:%02d  ",
	  start->tm_year % 100,
	  start->tm_mon+1,
	  start->tm_mday,
	  start->tm_hour,
	  start->tm_min,
	  start->tm_sec);
  (void) vfprintf(stderr,format,args);
  (void) fputc('\n',stderr);
  fflush(stderr);
  va_end(args);

  VOID(pthread_mutex_unlock(&LOCK_error_log));
  DBUG_VOID_RETURN;
}



void sql_perror(const char *message)
{
#ifdef HAVE_STRERROR
  sql_print_error("%s: %s",message, strerror(errno));
#else
  perror(message);
#endif
}