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9d897b0951
This means changing headers, implementing a simple tap-like wrapper, and also splitting out the helpers into those which are linked with the api* tests (which can't use non-public tdb2 functions) and those linked with the run* tests (which can). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
206 lines
4.9 KiB
C
206 lines
4.9 KiB
C
/* Test forking while holding lock.
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*
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* There are only five ways to do this currently:
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* (1) grab a tdb_chainlock, then fork.
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* (2) grab a tdb_lockall, then fork.
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* (3) grab a tdb_lockall_read, then fork.
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* (4) start a transaction, then fork.
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* (5) fork from inside a tdb_parse() callback.
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*
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* Note that we don't hold a lock across tdb_traverse callbacks, so
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* that doesn't matter.
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*/
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#include "config.h"
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#include "tdb2.h"
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#include "tap-interface.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include "logging.h"
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static enum TDB_ERROR fork_in_parse(TDB_DATA key, TDB_DATA data,
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struct tdb_context *tdb)
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{
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int status, extra_messages;
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if (tdb_get_flags(tdb) & TDB_VERSION1) {
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extra_messages = 1;
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} else {
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extra_messages = 0;
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}
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if (fork() == 0) {
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/* We expect this to fail. */
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if (tdb_store(tdb, key, data, TDB_REPLACE) != TDB_ERR_LOCK)
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exit(1);
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tap_log_messages -= extra_messages;
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if (tdb_fetch(tdb, key, &data) != TDB_ERR_LOCK)
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exit(1);
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tap_log_messages -= extra_messages;
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if (tap_log_messages != 2)
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exit(2);
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tdb_close(tdb);
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if (tap_log_messages != 2)
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exit(3);
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exit(0);
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}
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wait(&status);
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ok1(WIFEXITED(status) && WEXITSTATUS(status) == 0);
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return TDB_SUCCESS;
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}
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int main(int argc, char *argv[])
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{
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unsigned int i;
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struct tdb_context *tdb;
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int flags[] = { TDB_DEFAULT, TDB_NOMMAP,
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TDB_CONVERT, TDB_NOMMAP|TDB_CONVERT,
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TDB_VERSION1, TDB_NOMMAP|TDB_VERSION1,
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TDB_CONVERT|TDB_VERSION1,
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TDB_NOMMAP|TDB_CONVERT|TDB_VERSION1 };
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struct tdb_data key = tdb_mkdata("key", 3);
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struct tdb_data data = tdb_mkdata("data", 4);
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plan_tests(sizeof(flags) / sizeof(flags[0]) * 14);
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for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
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int status, extra_messages;
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if (flags[i] & TDB_VERSION1) {
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extra_messages = 1;
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} else {
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extra_messages = 0;
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}
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tap_log_messages = 0;
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tdb = tdb_open("run-fork-test.tdb", flags[i],
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O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
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if (!ok1(tdb))
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continue;
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/* Put a record in here. */
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ok1(tdb_store(tdb, key, data, TDB_REPLACE) == TDB_SUCCESS);
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ok1(tdb_chainlock(tdb, key) == TDB_SUCCESS);
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if (fork() == 0) {
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/* We expect this to fail. */
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if (tdb_store(tdb, key, data, TDB_REPLACE) != TDB_ERR_LOCK)
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return 1;
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tap_log_messages -= extra_messages;
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if (tdb_fetch(tdb, key, &data) != TDB_ERR_LOCK)
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return 1;
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tap_log_messages -= extra_messages;
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if (tap_log_messages != 2)
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return 2;
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tdb_chainunlock(tdb, key);
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if (tap_log_messages != 3)
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return 3;
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tdb_close(tdb);
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if (tap_log_messages != 3)
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return 4;
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return 0;
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}
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wait(&status);
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ok1(WIFEXITED(status) && WEXITSTATUS(status) == 0);
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tdb_chainunlock(tdb, key);
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ok1(tdb_lockall(tdb) == TDB_SUCCESS);
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if (fork() == 0) {
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/* We expect this to fail. */
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if (tdb_store(tdb, key, data, TDB_REPLACE) != TDB_ERR_LOCK)
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return 1;
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tap_log_messages -= extra_messages;
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if (tdb_fetch(tdb, key, &data) != TDB_ERR_LOCK)
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return 1;
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tap_log_messages -= extra_messages;
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if (tap_log_messages != 2)
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return 2;
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tdb_unlockall(tdb);
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if (tap_log_messages != 2)
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return 3;
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tdb_close(tdb);
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if (tap_log_messages != 2)
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return 4;
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return 0;
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}
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wait(&status);
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ok1(WIFEXITED(status) && WEXITSTATUS(status) == 0);
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tdb_unlockall(tdb);
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ok1(tdb_lockall_read(tdb) == TDB_SUCCESS);
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if (fork() == 0) {
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/* We expect this to fail. */
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/* This would always fail anyway... */
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if (tdb_store(tdb, key, data, TDB_REPLACE) != TDB_ERR_LOCK)
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return 1;
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tap_log_messages -= extra_messages;
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if (tdb_fetch(tdb, key, &data) != TDB_ERR_LOCK)
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return 1;
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tap_log_messages -= extra_messages;
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if (tap_log_messages != 2)
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return 2;
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tdb_unlockall_read(tdb);
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if (tap_log_messages != 2)
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return 3;
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tdb_close(tdb);
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if (tap_log_messages != 2)
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return 4;
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return 0;
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}
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wait(&status);
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ok1(WIFEXITED(status) && WEXITSTATUS(status) == 0);
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tdb_unlockall_read(tdb);
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ok1(tdb_transaction_start(tdb) == TDB_SUCCESS);
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/* If transactions is empty, noop "commit" succeeds. */
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ok1(tdb_delete(tdb, key) == TDB_SUCCESS);
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if (fork() == 0) {
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/* We expect this to fail. */
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if (tdb_store(tdb, key, data, TDB_REPLACE) != TDB_ERR_LOCK)
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return 1;
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tap_log_messages -= extra_messages;
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if (tdb_fetch(tdb, key, &data) != TDB_ERR_LOCK)
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return 1;
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tap_log_messages -= extra_messages;
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if (tap_log_messages != 2)
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return 2;
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if (tdb_transaction_commit(tdb) != TDB_ERR_LOCK)
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return 3;
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tap_log_messages -= extra_messages;
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tdb_close(tdb);
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if (tap_log_messages < 3)
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return 4;
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return 0;
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}
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wait(&status);
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ok1(WIFEXITED(status) && WEXITSTATUS(status) == 0);
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tdb_transaction_cancel(tdb);
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ok1(tdb_parse_record(tdb, key, fork_in_parse, tdb)
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== TDB_SUCCESS);
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tdb_close(tdb);
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ok1(tap_log_messages == 0);
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}
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return exit_status();
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}
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