--- /dev/null
+#include "../common/tdb_private.h"
+#include "../common/io.c"
+#include "../common/tdb.c"
+#include "../common/lock.c"
+#include "../common/freelist.c"
+#include "../common/traverse.c"
+#include "../common/transaction.c"
+#include "../common/error.c"
+#include "../common/open.c"
+#include "../common/check.c"
+#include "../common/hash.c"
+#include "../common/mutex.c"
+#include "tap-interface.h"
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdarg.h>
+
+static TDB_DATA key, data;
+
+static void log_fn(struct tdb_context *tdb, enum tdb_debug_level level,
+ const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+}
+
+static int do_child(int tdb_flags, int to, int from)
+{
+ struct tdb_context *tdb;
+ unsigned int log_count;
+ struct tdb_logging_context log_ctx = { log_fn, &log_count };
+ int ret;
+ char c = 0;
+
+ tdb = tdb_open_ex("mutex-transaction1.tdb", 3, tdb_flags,
+ O_RDWR|O_CREAT, 0755, &log_ctx, NULL);
+ ok(tdb, "tdb_open_ex should succeed");
+
+ ret = tdb_transaction_start(tdb);
+ ok(ret == 0, "tdb_transaction_start should succeed");
+
+ ret = tdb_store(tdb, key, data, TDB_INSERT);
+ ok(ret == 0, "tdb_store(tdb, key, data, TDB_INSERT) should succeed");
+
+ write(to, &c, sizeof(c));
+ read(from, &c, sizeof(c));
+
+ ret = tdb_transaction_cancel(tdb);
+ ok(ret == 0, "tdb_transaction_cancel should succeed");
+
+ write(to, &c, sizeof(c));
+ read(from, &c, sizeof(c));
+
+ ret = tdb_transaction_start(tdb);
+ ok(ret == 0, "tdb_transaction_start should succeed");
+
+ ret = tdb_store(tdb, key, data, TDB_INSERT);
+ ok(ret == 0, "tdb_store(tdb, key, data, TDB_INSERT) should succeed");
+
+ write(to, &c, sizeof(c));
+ read(from, &c, sizeof(c));
+
+ ret = tdb_transaction_commit(tdb);
+ ok(ret == 0, "tdb_transaction_commit should succeed");
+
+ write(to, &c, sizeof(c));
+ read(from, &c, sizeof(c));
+
+ ret = tdb_transaction_start(tdb);
+ ok(ret == 0, "tdb_transaction_start should succeed");
+
+ ret = tdb_store(tdb, key, key, TDB_REPLACE);
+ ok(ret == 0, "tdb_store(tdb, key, data, TDB_REPLACE) should succeed");
+
+ write(to, &c, sizeof(c));
+ read(from, &c, sizeof(c));
+
+ ret = tdb_transaction_commit(tdb);
+ ok(ret == 0, "tdb_transaction_commit should succeed");
+
+ write(to, &c, sizeof(c));
+ read(from, &c, sizeof(c));
+
+ return 0;
+}
+
+/* The code should barf on TDBs created with rwlocks. */
+int main(int argc, char *argv[])
+{
+ struct tdb_context *tdb;
+ unsigned int log_count;
+ struct tdb_logging_context log_ctx = { log_fn, &log_count };
+ int ret, status;
+ pid_t child, wait_ret;
+ int fromchild[2];
+ int tochild[2];
+ TDB_DATA val;
+ char c;
+ int tdb_flags;
+ bool runtime_support;
+
+ runtime_support = tdb_runtime_check_for_robust_mutexes();
+
+ if (!runtime_support) {
+ skip(1, "No robust mutex support");
+ return exit_status();
+ }
+
+ key.dsize = strlen("hi");
+ key.dptr = discard_const_p(uint8_t, "hi");
+ data.dsize = strlen("world");
+ data.dptr = discard_const_p(uint8_t, "world");
+
+ pipe(fromchild);
+ pipe(tochild);
+
+ tdb_flags = TDB_INCOMPATIBLE_HASH|
+ TDB_MUTEX_LOCKING|
+ TDB_CLEAR_IF_FIRST;
+
+ child = fork();
+ if (child == 0) {
+ close(fromchild[0]);
+ close(tochild[1]);
+ return do_child(tdb_flags, fromchild[1], tochild[0]);
+ }
+ close(fromchild[1]);
+ close(tochild[0]);
+
+ read(fromchild[0], &c, sizeof(c));
+
+ tdb = tdb_open_ex("mutex-transaction1.tdb", 0,
+ tdb_flags, O_RDWR|O_CREAT, 0755,
+ &log_ctx, NULL);
+ ok(tdb, "tdb_open_ex should succeed");
+
+ /*
+ * The child has the transaction running
+ */
+ ret = tdb_transaction_start_nonblock(tdb);
+ ok(ret == -1, "tdb_transaction_start_nonblock not succeed");
+
+ ret = tdb_chainlock_nonblock(tdb, key);
+ ok(ret == -1, "tdb_chainlock_nonblock should not succeed");
+
+ /*
+ * We can still read
+ */
+ ret = tdb_exists(tdb, key);
+ ok(ret == 0, "tdb_exists(tdb, key) should return 0");
+
+ val = tdb_fetch(tdb, key);
+ ok(val.dsize == 0, "tdb_fetch(tdb, key) should return an empty value");
+
+ write(tochild[1], &c, sizeof(c));
+
+ /*
+ * When the child canceled we can start...
+ */
+ ret = tdb_transaction_start(tdb);
+ ok(ret == 0, "tdb_transaction_start should succeed");
+
+ read(fromchild[0], &c, sizeof(c));
+ write(tochild[1], &c, sizeof(c));
+
+ ret = tdb_transaction_cancel(tdb);
+ ok(ret == 0, "tdb_transaction_cancel should succeed");
+
+ /*
+ * When we canceled the child can start and store...
+ */
+ read(fromchild[0], &c, sizeof(c));
+
+ /*
+ * We still see the old values before the child commits...
+ */
+ ret = tdb_exists(tdb, key);
+ ok(ret == 0, "tdb_exists(tdb, key) should return 0");
+
+ val = tdb_fetch(tdb, key);
+ ok(val.dsize == 0, "tdb_fetch(tdb, key) should return an empty value");
+
+ write(tochild[1], &c, sizeof(c));
+ read(fromchild[0], &c, sizeof(c));
+
+ /*
+ * We see the new values after the commit...
+ */
+ ret = tdb_exists(tdb, key);
+ ok(ret == 1, "tdb_exists(tdb, key) should return 1");
+
+ val = tdb_fetch(tdb, key);
+ ok(val.dsize != 0, "tdb_fetch(tdb, key) should return a value");
+ ok(val.dsize == data.dsize, "tdb_fetch(tdb, key) should return a value");
+ ok(memcmp(val.dptr, data.dptr, data.dsize) == 0, "tdb_fetch(tdb, key) should return a value");
+
+ write(tochild[1], &c, sizeof(c));
+ read(fromchild[0], &c, sizeof(c));
+
+ /*
+ * The child started a new transaction and replaces the value,
+ * but we still see the old values before the child commits...
+ */
+ ret = tdb_exists(tdb, key);
+ ok(ret == 1, "tdb_exists(tdb, key) should return 1");
+
+ val = tdb_fetch(tdb, key);
+ ok(val.dsize != 0, "tdb_fetch(tdb, key) should return a value");
+ ok(val.dsize == data.dsize, "tdb_fetch(tdb, key) should return a value");
+ ok(memcmp(val.dptr, data.dptr, data.dsize) == 0, "tdb_fetch(tdb, key) should return a value");
+
+ write(tochild[1], &c, sizeof(c));
+ read(fromchild[0], &c, sizeof(c));
+
+ /*
+ * We see the new values after the commit...
+ */
+ ret = tdb_exists(tdb, key);
+ ok(ret == 1, "tdb_exists(tdb, key) should return 1");
+
+ val = tdb_fetch(tdb, key);
+ ok(val.dsize != 0, "tdb_fetch(tdb, key) should return a value");
+ ok(val.dsize == key.dsize, "tdb_fetch(tdb, key) should return a value");
+ ok(memcmp(val.dptr, key.dptr, key.dsize) == 0, "tdb_fetch(tdb, key) should return a value");
+
+ write(tochild[1], &c, sizeof(c));
+
+ wait_ret = wait(&status);
+ ok(wait_ret == child, "child should have exited correctly");
+
+ diag("done");
+ return exit_status();
+}
git.samba.org / samba.git / blobdiff