mariadb/storage/tokudb/PerconaFT/ft/tests/logcursor-bad-checksum.cc
Sergei Golubchik 2c8c652978 5.6.26-74.0
2015-10-26 12:57:57 +01:00

118 lines
3.7 KiB
C++

/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
/*======
This file is part of PerconaFT.
Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.
PerconaFT is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2,
as published by the Free Software Foundation.
PerconaFT 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 PerconaFT. If not, see <http://www.gnu.org/licenses/>.
----------------------------------------
PerconaFT is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License, version 3,
as published by the Free Software Foundation.
PerconaFT 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with PerconaFT. If not, see <http://www.gnu.org/licenses/>.
======= */
#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."
#include "logger/logcursor.h"
#include "test.h"
// log a couple of timestamp entries and verify the log by walking
// a cursor through the log entries
static void corrupt_the_checksum(void) {
// change the LSN in the first log entry of log 0. this will cause an checksum error.
char logname[TOKU_PATH_MAX+1];
int r;
sprintf(logname, "%s/log000000000000.tokulog%d", TOKU_TEST_FILENAME, TOKU_LOG_VERSION);
FILE *f = fopen(logname, "r+b"); assert(f);
r = fseek(f, 025, SEEK_SET); assert(r == 0);
char c = 100;
size_t n = fwrite(&c, sizeof c, 1, f); assert(n == sizeof c);
r = fclose(f); assert(r == 0);
}
int
test_main (int argc, const char *argv[]) {
default_parse_args(argc, argv);
int r;
toku_os_recursive_delete(TOKU_TEST_FILENAME);
r = toku_os_mkdir(TOKU_TEST_FILENAME, S_IRWXU); assert(r==0);
TOKULOGGER logger;
LSN lsn = ZERO_LSN;
// log a couple of timestamp log entries
r = toku_logger_create(&logger);
assert(r == 0);
r = toku_logger_open(TOKU_TEST_FILENAME, logger);
assert(r == 0);
BYTESTRING bs0 = { .len = 5, .data = (char *) "hello" };
toku_log_comment(logger, &lsn, 0, 0, bs0);
r = toku_logger_close(&logger);
assert(r == 0);
// change the LSN and corrupt the checksum
corrupt_the_checksum();
if (!verbose) {
// redirect stderr
int devnul = open(DEV_NULL_FILE, O_WRONLY);
assert(devnul >= 0);
r = toku_dup2(devnul, fileno(stderr)); assert(r == fileno(stderr));
r = close(devnul); assert(r == 0);
}
// walk forwards
TOKULOGCURSOR lc = NULL;
struct log_entry *le;
r = toku_logcursor_create(&lc, TOKU_TEST_FILENAME);
assert(r == 0 && lc != NULL);
r = toku_logcursor_next(lc, &le);
assert(r != 0);
r = toku_logcursor_destroy(&lc);
assert(r == 0 && lc == NULL);
// walk backwards
r = toku_logcursor_create(&lc, TOKU_TEST_FILENAME);
assert(r == 0 && lc != NULL);
r = toku_logcursor_prev(lc, &le);
assert(r != 0);
r = toku_logcursor_destroy(&lc);
assert(r == 0 && lc == NULL);
toku_os_recursive_delete(TOKU_TEST_FILENAME);
return 0;
}