ccan/ntdb: demote to junkcode.

[ccan] / junkcode / rusty@rustcorp.com.au-ntdb / test / api-83-openhook.c

diff --git a/junkcode/rusty@rustcorp.com.au-ntdb/test/api-83-openhook.c b/junkcode/rusty@rustcorp.com.au-ntdb/test/api-83-openhook.c
new file mode 100644 (file)
index 0000000..cdd015a
--- /dev/null
+++ b/junkcode/rusty@rustcorp.com.au-ntdb/test/api-83-openhook.c
@@ -0,0 +1,104 @@
+#include "config.h"
+#include "../ntdb.h"
+#include "../private.h"
+#include "tap-interface.h"
+#include "external-agent.h"
+#include "logging.h"
+#include "helpapi-external-agent.h"
+
+#define KEY_STR "key"
+
+static enum NTDB_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 tdb's TDB_CLEAR_IF_FIRST flag).  */
+       struct flock fl;
+
+       if (arg != clear_if_first)
+               return NTDB_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 NTDB_ERR_IO;
+               }
+       }
+       fl.l_type = F_RDLCK;
+       if (fcntl(fd, F_SETLKW, &fl) != 0) {
+               return NTDB_ERR_IO;
+       }
+       return NTDB_SUCCESS;
+}
+
+int main(int argc, char *argv[])
+{
+       unsigned int i;
+       struct ntdb_context *ntdb, *ntdb2;
+       struct agent *agent;
+       union ntdb_attribute cif;
+       NTDB_DATA key = ntdb_mkdata(KEY_STR, strlen(KEY_STR));
+       int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP,
+                       NTDB_CONVERT, NTDB_NOMMAP|NTDB_CONVERT };
+
+       cif.openhook.base.attr = NTDB_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]) * 16);
+       for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+               /* Create it */
+               ntdb = ntdb_open("run-83-openhook.ntdb", flags[i]|MAYBE_NOSYNC,
+                                O_RDWR|O_CREAT|O_TRUNC, 0600, NULL);
+               ok1(ntdb);
+               ok1(ntdb_store(ntdb, key, key, NTDB_REPLACE) == 0);
+               ntdb_close(ntdb);
+
+               /* Now, open with CIF, should clear it. */
+               ntdb = ntdb_open("run-83-openhook.ntdb", flags[i]|MAYBE_NOSYNC,
+                                O_RDWR, 0, &cif);
+               ok1(ntdb);
+               ok1(!ntdb_exists(ntdb, key));
+               ok1(ntdb_store(ntdb, key, key, NTDB_REPLACE) == 0);
+
+               /* Agent should not clear it, since it's still open. */
+               ok1(external_agent_operation(agent, OPEN_WITH_HOOK,
+                                            "run-83-openhook.ntdb") == SUCCESS);
+               ok1(external_agent_operation(agent, FETCH, KEY_STR "=" KEY_STR)
+                   == SUCCESS);
+               ok1(external_agent_operation(agent, CLOSE, "") == SUCCESS);
+
+               /* Still exists for us too. */
+               ok1(ntdb_exists(ntdb, key));
+
+               /* Nested open should not erase db. */
+               ntdb2 = ntdb_open("run-83-openhook.ntdb", flags[i]|MAYBE_NOSYNC,
+                                 O_RDWR, 0, &cif);
+               ok1(ntdb_exists(ntdb2, key));
+               ok1(ntdb_exists(ntdb, key));
+               ntdb_close(ntdb2);
+
+               ok1(ntdb_exists(ntdb, key));
+
+               /* Close it, now agent should clear it. */
+               ntdb_close(ntdb);
+
+               ok1(external_agent_operation(agent, OPEN_WITH_HOOK,
+                                            "run-83-openhook.ntdb") == SUCCESS);
+               ok1(external_agent_operation(agent, FETCH, KEY_STR "=" KEY_STR)
+                   == FAILED);
+               ok1(external_agent_operation(agent, CLOSE, "") == SUCCESS);
+
+               ok1(tap_log_messages == 0);
+       }
+
+       free_external_agent(agent);
+       return exit_status();
+}