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#include <ccan/tdb2/tdb2.h>
#include <ccan/tap/tap.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdarg.h>
#include <err.h>
#include <unistd.h>
#include "external-agent.h"
#include "logging.h"
static enum TDB_ERROR clear_if_first(int fd, void *arg)
{
/* We hold a lock offset 4 always, so we can tell if anyone is holding it.
* (This is compatible with tdb1's TDB_CLEAR_IF_FIRST flag). */
struct flock fl;
if (arg != clear_if_first)
return TDB_ERR_CORRUPT;
fl.l_type = F_WRLCK;
fl.l_whence = SEEK_SET;
fl.l_start = 4;
fl.l_len = 1;
if (fcntl(fd, F_SETLK, &fl) == 0) {
/* We must be first ones to open it! */
diag("truncating file!");
if (ftruncate(fd, 0) != 0) {
return TDB_ERR_IO;
}
}
fl.l_type = F_RDLCK;
if (fcntl(fd, F_SETLKW, &fl) != 0) {
return TDB_ERR_IO;
}
return TDB_SUCCESS;
}
int main(int argc, char *argv[])
{
unsigned int i;
struct tdb_context *tdb;
struct agent *agent;
union tdb_attribute cif;
struct tdb_data key = tdb_mkdata("key", 3);
int flags[] = { TDB_DEFAULT, TDB_NOMMAP,
TDB_CONVERT, TDB_NOMMAP|TDB_CONVERT,
TDB_VERSION1, TDB_NOMMAP|TDB_VERSION1,
TDB_CONVERT|TDB_VERSION1,
TDB_NOMMAP|TDB_CONVERT|TDB_VERSION1 };
cif.openhook.base.attr = TDB_ATTRIBUTE_OPENHOOK;
cif.openhook.base.next = &tap_log_attr;
cif.openhook.fn = clear_if_first;
cif.openhook.data = clear_if_first;
agent = prepare_external_agent();
plan_tests(sizeof(flags) / sizeof(flags[0]) * 13);
for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
/* Create it */
tdb = tdb_open("run-83-openhook.tdb", flags[i],
O_RDWR|O_CREAT|O_TRUNC, 0600, NULL);
ok1(tdb);
ok1(tdb_store(tdb, key, key, TDB_REPLACE) == 0);
tdb_close(tdb);
/* Now, open with CIF, should clear it. */
tdb = tdb_open("run-83-openhook.tdb", flags[i],
O_RDWR, 0, &cif);
ok1(tdb);
ok1(!tdb_exists(tdb, key));
ok1(tdb_store(tdb, key, key, TDB_REPLACE) == 0);
/* Agent should not clear it, since it's still open. */
ok1(external_agent_operation(agent, OPEN_WITH_HOOK,
"run-83-openhook.tdb") == SUCCESS);
ok1(external_agent_operation(agent, FETCH, "key") == SUCCESS);
ok1(external_agent_operation(agent, CLOSE, "") == SUCCESS);
/* Still exists for us too. */
ok1(tdb_exists(tdb, key));
/* Close it, now agent should clear it. */
tdb_close(tdb);
ok1(external_agent_operation(agent, OPEN_WITH_HOOK,
"run-83-openhook.tdb") == SUCCESS);
ok1(external_agent_operation(agent, FETCH, "key") == FAILED);
ok1(external_agent_operation(agent, CLOSE, "") == SUCCESS);
ok1(tap_log_messages == 0);
}
free_external_agent(agent);
return exit_status();
}
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