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#include <ccan/tdb2/private.h>
#include <unistd.h>
#include "tdb1-lock-tracking.h"
static ssize_t pwrite_check(int fd, const void *buf, size_t count, off_t offset);
static ssize_t write_check(int fd, const void *buf, size_t count);
static int ftruncate_check(int fd, off_t length);
#define pwrite pwrite_check
#define write write_check
#define fcntl fcntl_with_lockcheck1
#define ftruncate ftruncate_check
#include "tdb2-source.h"
#include <ccan/tap/tap.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdarg.h>
#include <err.h>
#include <setjmp.h>
#include "tdb1-external-agent.h"
#include "tdb1-logging.h"
#undef write
#undef pwrite
#undef fcntl
#undef ftruncate
static bool in_transaction;
static int target, current;
static jmp_buf jmpbuf;
#define TEST_DBNAME "run-die-during-transaction.tdb"
#define KEY_STRING "helloworld"
static void maybe_die(int fd)
{
if (in_transaction && current++ == target) {
longjmp(jmpbuf, 1);
}
}
static ssize_t pwrite_check(int fd,
const void *buf, size_t count, off_t offset)
{
ssize_t ret;
maybe_die(fd);
ret = pwrite(fd, buf, count, offset);
if (ret != count)
return ret;
maybe_die(fd);
return ret;
}
static ssize_t write_check(int fd, const void *buf, size_t count)
{
ssize_t ret;
maybe_die(fd);
ret = write(fd, buf, count);
if (ret != count)
return ret;
maybe_die(fd);
return ret;
}
static int ftruncate_check(int fd, off_t length)
{
int ret;
maybe_die(fd);
ret = ftruncate(fd, length);
maybe_die(fd);
return ret;
}
static bool test_death(enum operation op, struct agent *agent)
{
struct tdb_context *tdb = NULL;
TDB_DATA key;
enum agent_return ret;
int needed_recovery = 0;
current = target = 0;
reset:
unlink(TEST_DBNAME);
tdb = tdb1_open_ex(TEST_DBNAME, 1024, TDB_NOMMAP,
O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
if (setjmp(jmpbuf) != 0) {
/* We're partway through. Simulate our death. */
close(tdb->file->fd);
forget_locking1();
in_transaction = false;
ret = external_agent_operation1(agent, NEEDS_RECOVERY, "");
if (ret == SUCCESS)
needed_recovery++;
else if (ret != FAILED) {
diag("Step %u agent NEEDS_RECOVERY = %s", current,
agent_return_name1(ret));
return false;
}
ret = external_agent_operation1(agent, op, KEY_STRING);
if (ret != SUCCESS) {
diag("Step %u op %s failed = %s", current,
operation_name1(op),
agent_return_name1(ret));
return false;
}
ret = external_agent_operation1(agent, NEEDS_RECOVERY, "");
if (ret != FAILED) {
diag("Still needs recovery after step %u = %s",
current, agent_return_name1(ret));
return false;
}
ret = external_agent_operation1(agent, CHECK, "");
if (ret != SUCCESS) {
diag("Step %u check failed = %s", current,
agent_return_name1(ret));
return false;
}
ret = external_agent_operation1(agent, CLOSE, "");
if (ret != SUCCESS) {
diag("Step %u close failed = %s", current,
agent_return_name1(ret));
return false;
}
/* Suppress logging as this tries to use closed fd. */
suppress_logging = true;
suppress_lockcheck1 = true;
tdb1_close(tdb);
suppress_logging = false;
suppress_lockcheck1 = false;
target++;
current = 0;
goto reset;
}
/* Put key for agent to fetch. */
key.dsize = strlen(KEY_STRING);
key.dptr = (void *)KEY_STRING;
if (tdb1_store(tdb, key, key, TDB_INSERT) != 0)
return false;
/* This is the key we insert in transaction. */
key.dsize--;
ret = external_agent_operation1(agent, OPEN, TEST_DBNAME);
if (ret != SUCCESS)
errx(1, "Agent failed to open: %s", agent_return_name1(ret));
ret = external_agent_operation1(agent, FETCH, KEY_STRING);
if (ret != SUCCESS)
errx(1, "Agent failed find key: %s", agent_return_name1(ret));
in_transaction = true;
if (tdb1_transaction_start(tdb) != 0)
return false;
if (tdb1_store(tdb, key, key, TDB_INSERT) != 0)
return false;
if (tdb1_transaction_commit(tdb) != 0)
return false;
in_transaction = false;
/* We made it! */
diag("Completed %u runs", current);
tdb1_close(tdb);
ret = external_agent_operation1(agent, CLOSE, "");
if (ret != SUCCESS) {
diag("Step %u close failed = %s", current,
agent_return_name1(ret));
return false;
}
ok1(needed_recovery);
ok1(locking_errors1 == 0);
ok1(forget_locking1() == 0);
locking_errors1 = 0;
return true;
}
int main(int argc, char *argv[])
{
enum operation ops[] = { FETCH, STORE, TRANSACTION_START };
struct agent *agent;
int i;
plan_tests(12);
unlock_callback1 = maybe_die;
agent = prepare_external_agent1();
if (!agent)
err(1, "preparing agent");
for (i = 0; i < sizeof(ops)/sizeof(ops[0]); i++) {
diag("Testing %s after death", operation_name1(ops[i]));
ok1(test_death(ops[i], agent));
}
return exit_status();
}
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