mysqld_safe.c 17 KB
Newer Older
unknown's avatar
unknown committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
/*
  Copyright (c) 2003 Novell, Inc. All Rights Reserved. 

  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
*/ 

#include <stdlib.h>
#include <stdio.h>
#include <netdb.h>
#include <sys/stat.h>
#include <monitor.h>
#include <strings.h>
#include <getopt.h>
#include <screen.h>
#include <dirent.h>

#include "my_config.h"
#include "my_manage.h"

/******************************************************************************

	global variables
	
******************************************************************************/
char autoclose;
char basedir[PATH_MAX];
unknown's avatar
unknown committed
39
char checktables;
unknown's avatar
unknown committed
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57
char datadir[PATH_MAX];
char pid_file[PATH_MAX];
char address[PATH_MAX];
char port[PATH_MAX];
char err_log[PATH_MAX];
char safe_log[PATH_MAX];
char mysqld[PATH_MAX];
char hostname[PATH_MAX];
char default_option[PATH_MAX];

FILE *log_fd  = NULL;

/******************************************************************************

	prototypes
	
******************************************************************************/

unknown's avatar
unknown committed
58
void usage(void);
unknown's avatar
unknown committed
59 60 61 62
void vlog(char *, va_list);
void log(char *, ...);
void start_defaults(int, char*[]);
void finish_defaults();
63
void read_defaults(arg_list_t *);
unknown's avatar
unknown committed
64 65 66 67 68 69
void parse_args(int, char*[]);
void get_options(int, char*[]);
void check_data_vol();
void check_setup();
void check_tables();
void mysql_start(int, char*[]);
70
void parse_setvar(char *arg);
unknown's avatar
unknown committed
71 72 73 74 75 76 77 78 79

/******************************************************************************

	functions
	
******************************************************************************/

/******************************************************************************

unknown's avatar
unknown committed
80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115
  usage()
  
  Show usage.

******************************************************************************/
void usage(void)
{
  // keep the screen up
  setscreenmode(SCR_NO_MODE);
  
  puts("\
\n\
usage: mysqld_safe [options]\n\
\n\
Program to start the MySQL daemon and restart it if it dies unexpectedly.\n\
All options, besides those listed below, are passed on to the MySQL daemon.\n\
\n\
options:\n\
\n\
--autoclose                 Automatically close the mysqld_safe screen.\n\
\n\
--check-tables              Check the tables before starting the MySQL daemon.\n\
\n\
--err-log=<file>            Send the MySQL daemon error output to <file>.\n\
\n\
--help                      Show this help information.\n\
\n\
--mysqld=<file>             Use the <file> MySQL daemon.\n\
\n\
  ");
  
  exit(-1);
}

/******************************************************************************

unknown's avatar
unknown committed
116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177
  vlog()
  
  Log the message.

******************************************************************************/
void vlog(char *format, va_list ap)
{
  vfprintf(stdout, format, ap);
  fflush(stdout);
  
  if (log_fd)
  {
    vfprintf(log_fd, format, ap);
    fflush(log_fd);
  }
}

/******************************************************************************

  log()
  
  Log the message.

******************************************************************************/
void log(char *format, ...)
{
  va_list ap;
  
  va_start(ap, format);

  vlog(format, ap);
  
  va_end(ap);
}

/******************************************************************************

	start_defaults()
	
	Start setting the defaults.

******************************************************************************/
void start_defaults(int argc, char *argv[])
{
  struct stat buf;
  int i;
  
  // default options
  static char *default_options[] =
  {
  	"--no-defaults",
  	"--defaults-file=",
  	"--defaults-extra-file=",
  	NULL
  };
  
  // autoclose
  autoclose = FALSE;
  
  // basedir
  get_basedir(argv[0], basedir);
  
unknown's avatar
unknown committed
178 179 180
  // check-tables
  checktables = FALSE;
  
unknown's avatar
unknown committed
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234
  // hostname
  if (gethostname(hostname,PATH_MAX) < 0)
  {
    // default
    strcpy(hostname,"mysql");
  }

  // address
  snprintf(address, PATH_MAX, "0.0.0.0");

  // port
  snprintf(port, PATH_MAX, "3306");
  
  // default option
	default_option[0] = NULL;
  for (i=0; (argc > 1) && default_options[i]; i++)
	{
		if(!strnicmp(argv[1], default_options[i], strlen(default_options[i])))
		{
			strncpy(default_option, argv[1], PATH_MAX);
			break;
		}
	}
  
  // set after basedir is established
  datadir[0] = NULL;
  pid_file[0] = NULL;
  err_log[0] = NULL;
  safe_log[0] = NULL;
  mysqld[0] = NULL;
}

/******************************************************************************

	finish_defaults()
	
	Finish settig the defaults.

******************************************************************************/
void finish_defaults()
{
  struct stat buf;
  int i;
  
  // datadir
  if (!datadir[0]) snprintf(datadir, PATH_MAX, "%s/data", basedir);
  
  // pid-file
  if (!pid_file[0]) snprintf(pid_file, PATH_MAX, "%s/%s.pid", datadir, hostname);
  
  // err-log
  if (!err_log[0]) snprintf(err_log, PATH_MAX, "%s/%s.err", datadir, hostname);

  // safe-log
235
  if (!safe_log[0]) snprintf(safe_log, PATH_MAX, "%s/%s.safe", datadir, hostname);
unknown's avatar
unknown committed
236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252

  // mysqld
  if (!mysqld[0]) snprintf(mysqld, PATH_MAX, "%s/bin/mysqld-max", basedir);
  
  if (stat(mysqld, &buf))
  {
    snprintf(mysqld, PATH_MAX, "%s/bin/mysqld", basedir);
  }
}

/******************************************************************************

	read_defaults()
	
	Read the defaults.

******************************************************************************/
253
void read_defaults(arg_list_t *pal)
unknown's avatar
unknown committed
254
{
255
  arg_list_t al;
unknown's avatar
unknown committed
256 257 258 259 260 261 262 263 264 265 266 267 268
  char defaults_file[PATH_MAX];
  char mydefaults[PATH_MAX];
  char line[PATH_MAX];
  FILE *fp;
  
	// defaults output file
	snprintf(defaults_file, PATH_MAX, "%s/bin/defaults.out", basedir);
	remove(defaults_file);

	// mysqladmin file
  snprintf(mydefaults, PATH_MAX, "%s/bin/my_print_defaults", basedir);
	
  // args
269 270 271 272 273 274 275
  init_args(&al);
  add_arg(&al, mydefaults);
  if (default_option[0]) add_arg(&al, default_option);
  add_arg(&al, "mysqld");
  add_arg(&al, "server");
  add_arg(&al, "mysqld_safe");
  add_arg(&al, "safe_mysqld");
unknown's avatar
unknown committed
276

277
	spawn(mydefaults, &al, TRUE, NULL, defaults_file, NULL);
unknown's avatar
unknown committed
278

279
  free_args(&al);
unknown's avatar
unknown committed
280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323

	// gather defaults
	if((fp = fopen(defaults_file, "r")) != NULL)
	{
	  while(fgets(line, PATH_MAX, fp))
	  {
      char *p;
      
      // remove end-of-line character
      if ((p = strrchr(line, '\n')) != NULL) *p = '\0';
      
      // add the option as an argument
	    add_arg(pal, line);
	  }
	  
	  fclose(fp);
	}
	
	// remove file
	remove(defaults_file);
}

/******************************************************************************

	parse_args()
	
	Get the options.

******************************************************************************/
void parse_args(int argc, char *argv[])
{
  int index = 0;
  int c;
  
  // parse options
  enum opts
  {
    OPT_BASEDIR = 0xFF,
    OPT_DATADIR,
    OPT_PID_FILE,
    OPT_BIND_ADDRESS,
    OPT_PORT,
    OPT_ERR_LOG,
    OPT_SAFE_LOG,
unknown's avatar
unknown committed
324
    OPT_MYSQLD,
325 326
    OPT_HELP,
    OPT_SETVAR
unknown's avatar
unknown committed
327 328 329 330 331 332
  };
  
  static struct option options[] =
  {
    {"autoclose",     no_argument,        &autoclose,   TRUE},
    {"basedir",       required_argument,  0,            OPT_BASEDIR},
unknown's avatar
unknown committed
333
    {"check-tables",  no_argument,        &checktables, TRUE},
unknown's avatar
unknown committed
334 335 336 337 338 339 340
    {"datadir",       required_argument,  0,            OPT_DATADIR},
    {"pid-file",      required_argument,  0,            OPT_PID_FILE},
    {"bind-address",  required_argument,  0,            OPT_BIND_ADDRESS},
    {"port",          required_argument,  0,            OPT_PORT},
    {"err-log",       required_argument,  0,            OPT_ERR_LOG},
    {"safe-log",      required_argument,  0,            OPT_SAFE_LOG},
    {"mysqld",        required_argument,  0,            OPT_MYSQLD},
unknown's avatar
unknown committed
341
    {"help",          no_argument,        0,            OPT_HELP},
342
    {"set-variable",          required_argument,        0,            OPT_SETVAR},
unknown's avatar
unknown committed
343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389
    {0,               0,                  0,            0}
  };
  
  // we have to reset getopt_long because we use it multiple times
  optind = 1;
  
  // turn off error reporting
  opterr = 0;
  
  while ((c = getopt_long(argc, argv, "b:h:P:", options, &index)) >= 0)
  {
    switch (c)
    {
    case OPT_BASEDIR:
    case 'b':
      strcpy(basedir, optarg);
      break;
      
    case OPT_DATADIR:
    case 'h':
      strcpy(datadir, optarg);
      break;
      
    case OPT_PID_FILE:
      strcpy(pid_file, optarg);
      break;
      
    case OPT_BIND_ADDRESS:
      strcpy(address, optarg);
      break;
      
    case OPT_PORT:
    case 'P':
      strcpy(port, optarg);
      break;
      
    case OPT_ERR_LOG:
      strcpy(err_log, optarg);
      break;
      
    case OPT_SAFE_LOG:
      strcpy(safe_log, optarg);
      break;
      
    case OPT_MYSQLD:
      strcpy(mysqld, optarg);
      break;
390 391 392 393 394

    case OPT_SETVAR:
      parse_setvar(optarg);
      break;
 
unknown's avatar
unknown committed
395 396 397 398
    case OPT_HELP:
      usage();
      break;
      
unknown's avatar
unknown committed
399 400 401 402 403 404 405
    default:
      // ignore
      break;
    }
  }
}

406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424
/*
  parse_setvar(char *arg)
  Pasrsing for port just to display the port num on the mysqld_safe screen
*/
void parse_setvar(char *arg)
{
  char *pos;
  
  if ((pos= strindex(arg, "port")))
  {
    for (; *pos && *pos != '='; pos++) ;
    if (*pos)
      strcpy(port, pos + 1);
  }
}
/******************************************************************************



unknown's avatar
unknown committed
425 426 427 428 429 430 431 432 433
/******************************************************************************

	get_options()
	
	Get the options.

******************************************************************************/
void get_options(int argc, char *argv[])
{
434
  arg_list_t al;
unknown's avatar
unknown committed
435 436 437 438 439
  
  // start defaults
  start_defaults(argc, argv);

  // default file arguments
440 441 442 443 444
  init_args(&al);
  add_arg(&al, "ignore");
  read_defaults(&al);
  parse_args(al.argc, al.argv);
  free_args(&al);
unknown's avatar
unknown committed
445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484
  
  // command-line arguments
  parse_args(argc, argv);
  
  // finish defaults
  finish_defaults();
}

/******************************************************************************

	check_data_vol()
	
	Check the database volume.

******************************************************************************/
void check_data_vol()
{
  // warn if the data is on a Traditional volume
  struct volume_info vol;
  char buff[PATH_MAX];
  char *p;
  
  // clear struct
  memset(&vol, 0, sizeof(vol));
  
  // find volume name
  strcpy(buff, datadir);
  if (p = strchr(buff, ':'))
  {
    // terminate after volume name
    *p = 0;
  }
  else
  {
    // assume SYS volume
    strcpy(buff, "SYS");
  }
  
  // retrieve information
  netware_vol_info_from_name(&vol, buff);
485

unknown's avatar
unknown committed
486 487
  if ((vol.flags & VOL_NSS_PRESENT) == 0)
  {
488
    log("Error: Either the data directory does not exist or is not on an NSS volume!\n\n");
unknown's avatar
unknown committed
489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532
    exit(-1);
  }
}

/******************************************************************************

	check_setup()
	
	Check the current setup.

******************************************************************************/
void check_setup()
{
	struct stat info;
  char temp[PATH_MAX];
	
  // remove any current pid_file
	if (!stat(pid_file, &info) && (remove(pid_file) < 0))
	{
    log("ERROR: Unable to remove current pid file!\n\n");
    exit(-1);
	}
	
	// check the data volume
  check_data_vol();
  
  // check for a database
  snprintf(temp, PATH_MAX, "%s/mysql/host.frm", datadir);
  if (stat(temp, &info))
  {
    log("ERROR: No database found in the data directory!\n\n");
    exit(-1);
  }
}

/******************************************************************************

	check_tables()
	
	Check the database tables.

******************************************************************************/
void check_tables()
{
533
  arg_list_t al;
unknown's avatar
unknown committed
534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577
  char mycheck[PATH_MAX];
	char table[PATH_MAX];
	char db[PATH_MAX];
 	DIR *datadir_entry, *db_entry, *table_entry;
  
	// status
  log("checking tables...\n");
	
  // list databases
	if ((datadir_entry = opendir(datadir)) == NULL)
	{
		return;
	}

	while((db_entry = readdir(datadir_entry)) != NULL)
	{
    if (db_entry->d_name[0] == '.')
    {
      // Skip
    }
    else if (S_ISDIR(db_entry->d_type))
    {
      // create long db name
      snprintf(db, PATH_MAX, "%s/%s", datadir, db_entry->d_name);
      
      // list tables
      if ((db_entry = opendir(db)) == NULL)
      {
        continue;
      }
      
      while((table_entry = readdir(db_entry)) != NULL)
      {
        // create long table name
        snprintf(table, PATH_MAX, "%s/%s", db, strlwr(table_entry->d_name));
        
        if (strindex(table, ".myi"))
        {
          // ** myisamchk

          // mysqladmin file
          snprintf(mycheck, PATH_MAX, "%s/bin/myisamchk", basedir);

          // args
578 579 580 581 582 583 584 585 586 587 588 589 590 591 592
          init_args(&al);
          add_arg(&al, mycheck);
          add_arg(&al, "--silent");
          add_arg(&al, "--force");
          add_arg(&al, "--fast");
          add_arg(&al, "--medium-check");
          add_arg(&al, "-O");
          add_arg(&al, "key_buffer=64M");
          add_arg(&al, "-O");
          add_arg(&al, "sort_buffer=64M");
          add_arg(&al, table);

          spawn(mycheck, &al, TRUE, NULL, NULL, NULL);

          free_args(&al);
unknown's avatar
unknown committed
593 594 595 596 597 598 599 600 601
        }
        else if (strindex(table, ".ism"))
        {
          // ** isamchk

          // mysqladmin file
          snprintf(mycheck, PATH_MAX, "%s/bin/isamchk", basedir);

          // args
602 603 604 605 606 607 608
          init_args(&al);
          add_arg(&al, mycheck);
          add_arg(&al, "--silent");
          add_arg(&al, "--force");
          add_arg(&al, "-O");
          add_arg(&al, "sort_buffer=64M");
          add_arg(&al, table);
unknown's avatar
unknown committed
609

610
          spawn(mycheck, &al, TRUE, NULL, NULL, NULL);
unknown's avatar
unknown committed
611

612
          free_args(&al);
unknown's avatar
unknown committed
613 614 615 616 617 618 619 620 621 622 623 624 625 626 627
        }
      }
    }
	}
}

/******************************************************************************

	mysql_start()
	
	Start the mysql server.

******************************************************************************/
void mysql_start(int argc, char *argv[])
{
628 629 630 631 632 633 634
  arg_list_t al;
  int i, j, err;
  struct stat info;
  time_t cal;
  struct tm lt;
  char stamp[PATH_MAX];
  char skip;
unknown's avatar
unknown committed
635 636 637 638
  
  // private options
  static char *private_options[] =
  {
639
    "--autoclose",
unknown's avatar
unknown committed
640 641
    "--check-tables",
    "--help",
642 643 644
    "--err-log=",
    "--mysqld=",
    NULL
unknown's avatar
unknown committed
645 646
  };
  
647 648 649 650 651 652 653
  // args
  init_args(&al);
  add_arg(&al, "%s", mysqld);
  
  // parent args
  for(i = 1; i < argc; i++)
  {
unknown's avatar
unknown committed
654 655 656 657 658 659 660 661
    skip = FALSE;
    
    // skip private arguments
    for (j=0; private_options[j]; j++)
    {
      if(!strnicmp(argv[i], private_options[j], strlen(private_options[j])))
      {
        skip = TRUE;
662
	consoleprintf("The argument skipped is %s\n",argv[i]);
unknown's avatar
unknown committed
663 664 665
        break;
      }
    }
666 667 668 669 670 671 672
    
    if (!skip)
    {
      add_arg(&al, "%s", argv[i]);
      consoleprintf("The final argument is %s\n",argv[i]);
    }
  }
unknown's avatar
unknown committed
673
  // spawn
674 675 676 677 678 679
  do
  {
    // check the database tables
    if (checktables) check_tables();
    
    // status
unknown's avatar
unknown committed
680 681 682 683
    time(&cal);
    localtime_r(&cal, &lt);
    strftime(stamp, PATH_MAX, "%d %b %Y %H:%M:%S", &lt);
    log("mysql started    : %s\n", stamp);
684 685 686 687 688 689 690
    
    // spawn mysqld
    spawn(mysqld, &al, TRUE, NULL, NULL, err_log);
  }
  while (!stat(pid_file, &info));
  
  // status
unknown's avatar
unknown committed
691 692 693 694 695
  time(&cal);
  localtime_r(&cal, &lt);
  strftime(stamp, PATH_MAX, "%d %b %Y %H:%M:%S", &lt);
  log("mysql stopped    : %s\n\n", stamp);
	
696 697
  // free args
  free_args(&al);
unknown's avatar
unknown committed
698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742
}

/******************************************************************************

	main()
	
******************************************************************************/
int main(int argc, char **argv)
{
	char temp[PATH_MAX];
  
  // get the options
	get_options(argc, argv);

  // keep the screen up
  if (!autoclose) setscreenmode(SCR_NO_MODE);
  
  // create log file
  log_fd = fopen(safe_log, "w+");
  
  // header
  log("MySQL Server %s, for %s (%s)\n\n", VERSION, SYSTEM_TYPE, MACHINE_TYPE);
  
	// status
	log("address          : %s\n", address);
	log("port             : %s\n", port);
  log("daemon           : %s\n", mysqld);
	log("base directory   : %s\n", basedir);
	log("data directory   : %s\n", datadir);
	log("pid file         : %s\n", pid_file);
	log("error file       : %s\n", err_log);
	log("log file         : %s\n", safe_log);
  log("\n");
  
  // check setup
  check_setup();
  
  // start the MySQL server
	mysql_start(argc, argv);
	
	// close log file
  if (log_fd) fclose(log_fd);
  
  return 0;
}