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systemd/src/journal/test-journal-interleaving.c
Shawn Landden 919ce0b7af _noreturn_ --> noreturn for C11 compat 
also define noreturn w/o <stdnoreturn.h>
2013-12-17 21:51:24 +01:00

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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Marius Vollmer
Copyright 2013 Zbigniew Jędrzejewski-Szmek
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <unistd.h>
#include <fcntl.h>
#include <systemd/sd-journal.h>
#include "journal-file.h"
#include "journal-internal.h"
#include "journal-vacuum.h"
#include "util.h"
#include "log.h"
/* This program tests skipping around in a multi-file journal.
*/
static bool arg_keep = false;
noreturn static void log_assert_errno(const char *text, int eno, const char *file, int line, const char *func) {
log_meta(LOG_CRIT, file, line, func,
"'%s' failed at %s:%u (%s): %s.",
text, file, line, func, strerror(eno));
abort();
}
#define assert_ret(expr) \
do { \
int _r_ = (expr); \
if (_unlikely_(_r_ < 0)) \
log_assert_errno(#expr, -_r_, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
} while (false)
static JournalFile *test_open(const char *name) {
JournalFile *f;
assert_ret(journal_file_open(name, O_RDWR|O_CREAT, 0644, true, false, NULL, NULL, NULL, &f));
return f;
}
static void test_close(JournalFile *f) {
journal_file_close (f);
}
static void append_number(JournalFile *f, int n, uint64_t *seqnum) {
char *p;
dual_timestamp ts;
struct iovec iovec[1];
dual_timestamp_get(&ts);
assert_se(asprintf(&p, "NUMBER=%d", n) >= 0);
iovec[0].iov_base = p;
iovec[0].iov_len = strlen(p);
assert_ret(journal_file_append_entry(f, &ts, iovec, 1, seqnum, NULL, NULL));
free(p);
}
static void test_check_number (sd_journal *j, int n) {
const void *d;
_cleanup_free_ char *k;
size_t l;
int x;
assert_ret(sd_journal_get_data(j, "NUMBER", &d, &l));
assert_se(k = strndup(d, l));
printf("%s\n", k);
assert_se(safe_atoi(k + 7, &x) >= 0);
assert_se(n == x);
}
static void test_check_numbers_down (sd_journal *j, int count) {
int i;
for (i = 1; i <= count; i++) {
int r;
test_check_number(j, i);
assert_ret(r = sd_journal_next(j));
if (i == count)
assert_se(r == 0);
else
assert_se(r == 1);
}
}
static void test_check_numbers_up (sd_journal *j, int count) {
for (int i = count; i >= 1; i--) {
int r;
test_check_number(j, i);
assert_ret(r = sd_journal_previous(j));
if (i == 1)
assert_se(r == 0);
else
assert_se(r == 1);
}
}
static void setup_sequential(void) {
JournalFile *one, *two;
one = test_open("one.journal");
two = test_open("two.journal");
append_number(one, 1, NULL);
append_number(one, 2, NULL);
append_number(two, 3, NULL);
append_number(two, 4, NULL);
test_close(one);
test_close(two);
}
static void setup_interleaved(void) {
JournalFile *one, *two;
one = test_open("one.journal");
two = test_open("two.journal");
append_number(one, 1, NULL);
append_number(two, 2, NULL);
append_number(one, 3, NULL);
append_number(two, 4, NULL);
test_close(one);
test_close(two);
}
static void test_skip(void (*setup)(void)) {
char t[] = "/tmp/journal-skip-XXXXXX";
sd_journal *j;
int r;
assert_se(mkdtemp(t));
assert_se(chdir(t) >= 0);
setup();
/* Seek to head, iterate down.
*/
assert_ret(sd_journal_open_directory(&j, t, 0));
assert_ret(sd_journal_seek_head(j));
assert_ret(sd_journal_next(j));
test_check_numbers_down(j, 4);
sd_journal_close(j);
/* Seek to tail, iterate up.
*/
assert_ret(sd_journal_open_directory(&j, t, 0));
assert_ret(sd_journal_seek_tail(j));
assert_ret(sd_journal_previous(j));
test_check_numbers_up(j, 4);
sd_journal_close(j);
/* Seek to tail, skip to head, iterate down.
*/
assert_ret(sd_journal_open_directory(&j, t, 0));
assert_ret(sd_journal_seek_tail(j));
assert_ret(r = sd_journal_previous_skip(j, 4));
assert_se(r == 4);
test_check_numbers_down(j, 4);
sd_journal_close(j);
/* Seek to head, skip to tail, iterate up.
*/
assert_ret(sd_journal_open_directory(&j, t, 0));
assert_ret(sd_journal_seek_head(j));
assert_ret(r = sd_journal_next_skip(j, 4));
assert_se(r == 4);
test_check_numbers_up(j, 4);
sd_journal_close(j);
log_info("Done...");
if (arg_keep)
log_info("Not removing %s", t);
else {
journal_directory_vacuum(".", 3000000, 0, 0, NULL);
assert_se(rm_rf_dangerous(t, false, true, false) >= 0);
}
puts("------------------------------------------------------------");
}
static void test_sequence_numbers(void) {
char t[] = "/tmp/journal-seq-XXXXXX";
JournalFile *one, *two;
uint64_t seqnum = 0;
sd_id128_t seqnum_id;
assert_se(mkdtemp(t));
assert_se(chdir(t) >= 0);
assert_se(journal_file_open("one.journal", O_RDWR|O_CREAT, 0644,
true, false, NULL, NULL, NULL, &one) == 0);
append_number(one, 1, &seqnum);
printf("seqnum=%"PRIu64"\n", seqnum);
assert(seqnum == 1);
append_number(one, 2, &seqnum);
printf("seqnum=%"PRIu64"\n", seqnum);
assert(seqnum == 2);
assert(one->header->state == STATE_ONLINE);
assert(!sd_id128_equal(one->header->file_id, one->header->machine_id));
assert(!sd_id128_equal(one->header->file_id, one->header->boot_id));
assert(sd_id128_equal(one->header->file_id, one->header->seqnum_id));
memcpy(&seqnum_id, &one->header->seqnum_id, sizeof(sd_id128_t));
assert_se(journal_file_open("two.journal", O_RDWR|O_CREAT, 0644,
true, false, NULL, NULL, one, &two) == 0);
assert(two->header->state == STATE_ONLINE);
assert(!sd_id128_equal(two->header->file_id, one->header->file_id));
assert(sd_id128_equal(one->header->machine_id, one->header->machine_id));
assert(sd_id128_equal(one->header->boot_id, one->header->boot_id));
assert(sd_id128_equal(one->header->seqnum_id, one->header->seqnum_id));
append_number(two, 3, &seqnum);
printf("seqnum=%"PRIu64"\n", seqnum);
assert(seqnum == 3);
append_number(two, 4, &seqnum);
printf("seqnum=%"PRIu64"\n", seqnum);
assert(seqnum == 4);
test_close(two);
append_number(one, 5, &seqnum);
printf("seqnum=%"PRIu64"\n", seqnum);
assert(seqnum == 5);
append_number(one, 6, &seqnum);
printf("seqnum=%"PRIu64"\n", seqnum);
assert(seqnum == 6);
test_close(one);
/* restart server */
seqnum = 0;
assert_se(journal_file_open("two.journal", O_RDWR, 0,
true, false, NULL, NULL, NULL, &two) == 0);
assert(sd_id128_equal(two->header->seqnum_id, seqnum_id));
append_number(two, 7, &seqnum);
printf("seqnum=%"PRIu64"\n", seqnum);
assert(seqnum == 5);
/* So..., here we have the same seqnum in two files with the
* same seqnum_id. */
test_close(two);
log_info("Done...");
if (arg_keep)
log_info("Not removing %s", t);
else {
journal_directory_vacuum(".", 3000000, 0, 0, NULL);
assert_se(rm_rf_dangerous(t, false, true, false) >= 0);
}
}
int main(int argc, char *argv[]) {
log_set_max_level(LOG_DEBUG);
/* journal_file_open requires a valid machine id */
if (access("/etc/machine-id", F_OK) != 0)
return EXIT_TEST_SKIP;
arg_keep = argc > 1;
test_skip(setup_sequential);
test_skip(setup_interleaved);
test_sequence_numbers();
return 0;
}
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