mirror of
https://github.com/MariaDB/server.git
synced 2025-01-18 04:53:01 +01:00
360 lines
8.5 KiB
C
360 lines
8.5 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1996-2002
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* Sleepycat Software. All rights reserved.
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*/
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#include "db_config.h"
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#ifndef lint
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static const char copyright[] =
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"Copyright (c) 1996-2002\nSleepycat Software Inc. All rights reserved.\n";
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static const char revid[] =
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"$Id: db_printlog.c,v 11.52 2002/08/08 03:50:38 bostic Exp $";
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#endif
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#endif
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#include "db_int.h"
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#include "dbinc/db_page.h"
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#include "dbinc/btree.h"
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#include "dbinc/fop.h"
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#include "dbinc/hash.h"
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#include "dbinc/log.h"
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#include "dbinc/qam.h"
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#include "dbinc/rep.h"
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#include "dbinc/txn.h"
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int main __P((int, char *[]));
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int usage __P((void));
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int version_check __P((const char *));
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int print_app_record __P((DB_ENV *, DBT *, DB_LSN *, db_recops));
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int open_rep_db __P((DB_ENV *, DB **, DBC **));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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extern char *optarg;
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extern int optind;
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const char *progname = "db_printlog";
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DB *dbp;
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DBC *dbc;
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DB_ENV *dbenv;
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DB_LOGC *logc;
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int (**dtab) __P((DB_ENV *, DBT *, DB_LSN *, db_recops, void *));
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size_t dtabsize;
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DBT data, keydbt;
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DB_LSN key;
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int ch, e_close, exitval, nflag, rflag, ret, repflag;
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char *home, *passwd;
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if ((ret = version_check(progname)) != 0)
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return (ret);
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dbp = NULL;
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dbc = NULL;
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logc = NULL;
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e_close = exitval = nflag = rflag = repflag = 0;
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home = passwd = NULL;
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dtabsize = 0;
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dtab = NULL;
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while ((ch = getopt(argc, argv, "h:NP:rRV")) != EOF)
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switch (ch) {
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case 'h':
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home = optarg;
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break;
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case 'N':
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nflag = 1;
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break;
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case 'P':
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passwd = strdup(optarg);
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memset(optarg, 0, strlen(optarg));
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if (passwd == NULL) {
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fprintf(stderr, "%s: strdup: %s\n",
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progname, strerror(errno));
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return (EXIT_FAILURE);
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}
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break;
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case 'r':
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rflag = 1;
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break;
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case 'R':
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repflag = 1;
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break;
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case 'V':
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printf("%s\n", db_version(NULL, NULL, NULL));
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return (EXIT_SUCCESS);
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case '?':
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default:
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return (usage());
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}
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argc -= optind;
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argv += optind;
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if (argc > 0)
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return (usage());
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/* Handle possible interruptions. */
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__db_util_siginit();
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/*
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* Create an environment object and initialize it for error
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* reporting.
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*/
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if ((ret = db_env_create(&dbenv, 0)) != 0) {
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fprintf(stderr,
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"%s: db_env_create: %s\n", progname, db_strerror(ret));
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goto shutdown;
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}
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e_close = 1;
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dbenv->set_errfile(dbenv, stderr);
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dbenv->set_errpfx(dbenv, progname);
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if (nflag) {
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if ((ret = dbenv->set_flags(dbenv, DB_NOLOCKING, 1)) != 0) {
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dbenv->err(dbenv, ret, "set_flags: DB_NOLOCKING");
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goto shutdown;
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}
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if ((ret = dbenv->set_flags(dbenv, DB_NOPANIC, 1)) != 0) {
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dbenv->err(dbenv, ret, "set_flags: DB_NOPANIC");
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goto shutdown;
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}
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}
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if (passwd != NULL && (ret = dbenv->set_encrypt(dbenv,
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passwd, DB_ENCRYPT_AES)) != 0) {
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dbenv->err(dbenv, ret, "set_passwd");
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goto shutdown;
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}
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/*
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* Set up an app-specific dispatch function so that we can gracefully
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* handle app-specific log records.
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*/
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if ((ret = dbenv->set_app_dispatch(dbenv, print_app_record)) != 0) {
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dbenv->err(dbenv, ret, "app_dispatch");
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goto shutdown;
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}
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/*
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* An environment is required, but as all we're doing is reading log
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* files, we create one if it doesn't already exist. If we create
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* it, create it private so it automatically goes away when we're done.
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* If we are reading the replication database, do not open the env
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* with logging, because we don't want to log the opens.
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*/
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if (repflag) {
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if ((ret = dbenv->open(dbenv, home,
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DB_INIT_MPOOL | DB_USE_ENVIRON, 0)) != 0 &&
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(ret = dbenv->open(dbenv, home,
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DB_CREATE | DB_INIT_MPOOL | DB_PRIVATE | DB_USE_ENVIRON, 0))
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!= 0) {
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dbenv->err(dbenv, ret, "open");
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goto shutdown;
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}
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} else if ((ret = dbenv->open(dbenv, home,
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DB_JOINENV | DB_USE_ENVIRON, 0)) != 0 &&
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(ret = dbenv->open(dbenv, home,
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DB_CREATE | DB_INIT_LOG | DB_PRIVATE | DB_USE_ENVIRON, 0)) != 0) {
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dbenv->err(dbenv, ret, "open");
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goto shutdown;
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}
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/* Initialize print callbacks. */
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if ((ret = __bam_init_print(dbenv, &dtab, &dtabsize)) != 0 ||
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(ret = __dbreg_init_print(dbenv, &dtab, &dtabsize)) != 0 ||
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(ret = __crdel_init_print(dbenv, &dtab, &dtabsize)) != 0 ||
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(ret = __db_init_print(dbenv, &dtab, &dtabsize)) != 0 ||
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(ret = __fop_init_print(dbenv, &dtab, &dtabsize)) != 0 ||
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(ret = __qam_init_print(dbenv, &dtab, &dtabsize)) != 0 ||
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(ret = __ham_init_print(dbenv, &dtab, &dtabsize)) != 0 ||
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(ret = __txn_init_print(dbenv, &dtab, &dtabsize)) != 0) {
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dbenv->err(dbenv, ret, "callback: initialization");
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goto shutdown;
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}
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/* Allocate a log cursor. */
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if (repflag) {
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if ((ret = open_rep_db(dbenv, &dbp, &dbc)) != 0)
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goto shutdown;
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} else if ((ret = dbenv->log_cursor(dbenv, &logc, 0)) != 0) {
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dbenv->err(dbenv, ret, "DB_ENV->log_cursor");
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goto shutdown;
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}
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memset(&data, 0, sizeof(data));
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memset(&keydbt, 0, sizeof(keydbt));
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while (!__db_util_interrupted()) {
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if (repflag) {
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ret = dbc->c_get(dbc,
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&keydbt, &data, rflag ? DB_PREV : DB_NEXT);
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if (ret == 0)
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key = ((REP_CONTROL *)keydbt.data)->lsn;
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} else
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ret = logc->get(logc,
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&key, &data, rflag ? DB_PREV : DB_NEXT);
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if (ret != 0) {
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if (ret == DB_NOTFOUND)
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break;
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dbenv->err(dbenv,
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ret, repflag ? "DB_LOGC->get" : "DBC->get");
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goto shutdown;
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}
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ret = __db_dispatch(dbenv,
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dtab, dtabsize, &data, &key, DB_TXN_PRINT, NULL);
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/*
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* XXX
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* Just in case the underlying routines don't flush.
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*/
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(void)fflush(stdout);
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if (ret != 0) {
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dbenv->err(dbenv, ret, "tx: dispatch");
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goto shutdown;
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}
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}
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if (0) {
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shutdown: exitval = 1;
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}
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if (logc != NULL && (ret = logc->close(logc, 0)) != 0)
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exitval = 1;
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if (dbc != NULL && (ret = dbc->c_close(dbc)) != 0)
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exitval = 1;
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if (dbp != NULL && (ret = dbp->close(dbp, 0)) != 0)
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exitval = 1;
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/*
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* The dtab is allocated by __db_add_recovery (called by *_init_print)
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* using the library malloc function (__os_malloc). It thus needs to be
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* freed using the corresponding free (__os_free).
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*/
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if (dtab != NULL)
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__os_free(dbenv, dtab);
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if (e_close && (ret = dbenv->close(dbenv, 0)) != 0) {
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exitval = 1;
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fprintf(stderr,
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"%s: dbenv->close: %s\n", progname, db_strerror(ret));
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}
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/* Resend any caught signal. */
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__db_util_sigresend();
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return (exitval == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
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}
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int
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usage()
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{
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fprintf(stderr, "%s\n",
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"usage: db_printlog [-NrV] [-h home] [-P password]");
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return (EXIT_FAILURE);
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}
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int
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version_check(progname)
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const char *progname;
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{
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int v_major, v_minor, v_patch;
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/* Make sure we're loaded with the right version of the DB library. */
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(void)db_version(&v_major, &v_minor, &v_patch);
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if (v_major != DB_VERSION_MAJOR ||
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v_minor != DB_VERSION_MINOR || v_patch != DB_VERSION_PATCH) {
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fprintf(stderr,
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"%s: version %d.%d.%d doesn't match library version %d.%d.%d\n",
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progname, DB_VERSION_MAJOR, DB_VERSION_MINOR,
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DB_VERSION_PATCH, v_major, v_minor, v_patch);
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return (EXIT_FAILURE);
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}
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return (0);
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}
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/* Print an unknown, application-specific log record as best we can. */
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int
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print_app_record(dbenv, dbt, lsnp, op)
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DB_ENV *dbenv;
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DBT *dbt;
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DB_LSN *lsnp;
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db_recops op;
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{
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int ch;
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u_int32_t i, rectype;
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DB_ASSERT(op == DB_TXN_PRINT);
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COMPQUIET(dbenv, NULL);
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/*
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* Fetch the rectype, which always must be at the beginning of the
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* record (if dispatching is to work at all).
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*/
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memcpy(&rectype, dbt->data, sizeof(rectype));
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/*
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* Applications may wish to customize the output here based on the
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* rectype. We just print the entire log record in the generic
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* mixed-hex-and-printable format we use for binary data.
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*/
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printf("[%lu][%lu]application specific record: rec: %lu\n",
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(u_long)lsnp->file, (u_long)lsnp->offset, (u_long)rectype);
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printf("\tdata: ");
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for (i = 0; i < dbt->size; i++) {
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ch = ((u_int8_t *)dbt->data)[i];
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printf(isprint(ch) || ch == 0x0a ? "%c" : "%#x ", ch);
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}
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printf("\n\n");
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return (0);
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}
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int
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open_rep_db(dbenv, dbpp, dbcp)
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DB_ENV *dbenv;
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DB **dbpp;
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DBC **dbcp;
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{
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int ret;
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DB *dbp;
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*dbpp = NULL;
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*dbcp = NULL;
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if ((ret = db_create(dbpp, dbenv, 0)) != 0) {
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dbenv->err(dbenv, ret, "db_create");
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return (ret);
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}
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dbp = *dbpp;
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if ((ret =
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dbp->open(dbp, NULL, "__db.rep.db", NULL, DB_BTREE, 0, 0)) != 0) {
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dbenv->err(dbenv, ret, "DB->open");
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goto err;
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}
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if ((ret = dbp->cursor(dbp, NULL, dbcp, 0)) != 0) {
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dbenv->err(dbenv, ret, "DB->cursor");
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goto err;
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}
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return (0);
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err: if (*dbpp != NULL)
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(void)(*dbpp)->close(*dbpp, 0);
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return (ret);
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}
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