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-rw-r--r--lib/ntdb/test/run-56-open-during-transaction.c165
1 files changed, 165 insertions, 0 deletions
diff --git a/lib/ntdb/test/run-56-open-during-transaction.c b/lib/ntdb/test/run-56-open-during-transaction.c
new file mode 100644
index 0000000000..f585aa13c8
--- /dev/null
+++ b/lib/ntdb/test/run-56-open-during-transaction.c
@@ -0,0 +1,165 @@
+#include "private.h"
+#include <unistd.h>
+#include "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_lockcheck
+#define ftruncate ftruncate_check
+
+#include "ntdb-source.h"
+#include "tap-interface.h"
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdarg.h>
+#include "external-agent.h"
+#include "logging.h"
+
+static struct agent *agent;
+static bool opened;
+static int errors = 0;
+#define TEST_DBNAME "run-56-open-during-transaction.ntdb"
+
+#undef write
+#undef pwrite
+#undef fcntl
+#undef ftruncate
+
+static bool is_same(const char *snapshot, const char *latest, off_t len)
+{
+ unsigned i;
+
+ for (i = 0; i < len; i++) {
+ if (snapshot[i] != latest[i])
+ return false;
+ }
+ return true;
+}
+
+static bool compare_file(int fd, const char *snapshot, off_t snapshot_len)
+{
+ char *contents;
+ bool ret;
+
+ /* over-length read serves as length check. */
+ contents = malloc(snapshot_len+1);
+ ret = pread(fd, contents, snapshot_len+1, 0) == snapshot_len
+ && is_same(snapshot, contents, snapshot_len);
+ free(contents);
+ return ret;
+}
+
+static void check_file_intact(int fd)
+{
+ enum agent_return ret;
+ struct stat st;
+ char *contents;
+
+ fstat(fd, &st);
+ contents = malloc(st.st_size);
+ if (pread(fd, contents, st.st_size, 0) != st.st_size) {
+ diag("Read fail");
+ errors++;
+ return;
+ }
+
+ /* Ask agent to open file. */
+ ret = external_agent_operation(agent, OPEN, TEST_DBNAME);
+
+ /* It's OK to open it, but it must not have changed! */
+ if (!compare_file(fd, contents, st.st_size)) {
+ diag("Agent changed file after opening %s",
+ agent_return_name(ret));
+ errors++;
+ }
+
+ if (ret == SUCCESS) {
+ ret = external_agent_operation(agent, CLOSE, NULL);
+ if (ret != SUCCESS) {
+ diag("Agent failed to close ntdb: %s",
+ agent_return_name(ret));
+ errors++;
+ }
+ } else if (ret != WOULD_HAVE_BLOCKED) {
+ diag("Agent opening file gave %s",
+ agent_return_name(ret));
+ errors++;
+ }
+
+ free(contents);
+}
+
+static void after_unlock(int fd)
+{
+ if (opened)
+ check_file_intact(fd);
+}
+
+static ssize_t pwrite_check(int fd,
+ const void *buf, size_t count, off_t offset)
+{
+ if (opened)
+ check_file_intact(fd);
+
+ return pwrite(fd, buf, count, offset);
+}
+
+static ssize_t write_check(int fd, const void *buf, size_t count)
+{
+ if (opened)
+ check_file_intact(fd);
+
+ return write(fd, buf, count);
+}
+
+static int ftruncate_check(int fd, off_t length)
+{
+ if (opened)
+ check_file_intact(fd);
+
+ return ftruncate(fd, length);
+
+}
+
+int main(int argc, char *argv[])
+{
+ const int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP,
+ NTDB_CONVERT, NTDB_NOMMAP|NTDB_CONVERT };
+ int i;
+ struct ntdb_context *ntdb;
+ NTDB_DATA key, data;
+
+ plan_tests(sizeof(flags)/sizeof(flags[0]) * 5);
+ agent = prepare_external_agent();
+ if (!agent)
+ err(1, "preparing agent");
+
+ unlock_callback = after_unlock;
+ for (i = 0; i < sizeof(flags)/sizeof(flags[0]); i++) {
+ diag("Test with %s and %s\n",
+ (flags[i] & NTDB_CONVERT) ? "CONVERT" : "DEFAULT",
+ (flags[i] & NTDB_NOMMAP) ? "no mmap" : "mmap");
+ unlink(TEST_DBNAME);
+ ntdb = ntdb_open(TEST_DBNAME, flags[i],
+ O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+ ok1(ntdb);
+
+ opened = true;
+ ok1(ntdb_transaction_start(ntdb) == 0);
+ key = ntdb_mkdata("hi", strlen("hi"));
+ data = ntdb_mkdata("world", strlen("world"));
+
+ ok1(ntdb_store(ntdb, key, data, NTDB_INSERT) == 0);
+ ok1(ntdb_transaction_commit(ntdb) == 0);
+ ok(!errors, "We had %u open errors", errors);
+
+ opened = false;
+ ntdb_close(ntdb);
+ }
+
+ return exit_status();
+}