Make TDB 32 bit clean (not just 31 bit) for systems with 64 bit file offsets.

[ccan] / ccan / tdb / test / run-3G-file.c

diff --git a/ccan/tdb/test/run-3G-file.c b/ccan/tdb/test/run-3G-file.c
new file mode 100644 (file)
index 0000000..d19decc
--- /dev/null
+++ b/ccan/tdb/test/run-3G-file.c
@@ -0,0 +1,127 @@
+/* We need this otherwise fcntl locking fails. */
+#define _FILE_OFFSET_BITS 64
+#define _XOPEN_SOURCE 500
+#include "tdb/tdb.h"
+#include "tdb/io.c"
+#include "tdb/tdb.c"
+#include "tdb/lock.c"
+#include "tdb/freelist.c"
+#include "tdb/traverse.c"
+#include "tdb/transaction.c"
+#include "tdb/error.c"
+#include "tdb/open.c"
+#include "tap/tap.h"
+#include <stdlib.h>
+#include <err.h>
+
+static int tdb_expand_file_sparse(struct tdb_context *tdb,
+                                 tdb_off_t size,
+                                 tdb_off_t addition)
+{
+       if (tdb->read_only || tdb->traverse_read) {
+               tdb->ecode = TDB_ERR_RDONLY;
+               return -1;
+       }
+
+       if (ftruncate(tdb->fd, size+addition) == -1) {
+               char b = 0;
+               ssize_t written = pwrite(tdb->fd,  &b, 1, (size+addition) - 1);
+               if (written == 0) {
+                       /* try once more, potentially revealing errno */
+                       written = pwrite(tdb->fd,  &b, 1, (size+addition) - 1);
+               }
+               if (written == 0) {
+                       /* again - give up, guessing errno */
+                       errno = ENOSPC;
+               }
+               if (written != 1) {
+                       TDB_LOG((tdb, TDB_DEBUG_FATAL, "expand_file to %d failed (%s)\n", 
+                                size+addition, strerror(errno)));
+                       return -1;
+               }
+       }
+
+       return 0;
+}
+
+static const struct tdb_methods large_io_methods = {
+       tdb_read,
+       tdb_write,
+       tdb_next_hash_chain,
+       tdb_oob,
+       tdb_expand_file_sparse,
+       tdb_brlock
+};
+
+static int test_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
+                        void *_data)
+{
+       TDB_DATA *expect = _data;
+       ok1(key.dsize == strlen("hi"));
+       ok1(memcmp(key.dptr, "hi", strlen("hi")) == 0);
+       ok1(data.dsize == expect->dsize);
+       ok1(memcmp(data.dptr, expect->dptr, data.dsize) == 0);
+       return 0;
+}
+
+int main(int argc, char *argv[])
+{
+       struct tdb_context *tdb;
+       TDB_DATA key, orig_data, data;
+       uint32_t hash;
+       tdb_off_t rec_ptr;
+       struct list_struct rec;
+
+       plan_tests(24);
+       tdb = tdb_open("/tmp/test.tdb", 1024, TDB_CLEAR_IF_FIRST,
+                      O_CREAT|O_TRUNC|O_RDWR, 0600);
+
+       ok1(tdb);
+       tdb->methods = &large_io_methods;
+
+       /* Enlarge the file (internally multiplies by 100). */
+       ok1(tdb_expand(tdb, 30000000) == 0);
+
+       /* Put an entry in, and check it. */
+       key.dsize = strlen("hi");
+       key.dptr = (void *)"hi";
+       orig_data.dsize = strlen("world");
+       orig_data.dptr = (void *)"world";
+
+       ok1(tdb_store(tdb, key, orig_data, TDB_INSERT) == 0);
+
+       data = tdb_fetch(tdb, key);
+       ok1(data.dsize == strlen("world"));
+       ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
+       free(data.dptr);
+
+       /* That currently fills at the end, make sure that's true. */
+       hash = tdb->hash_fn(&key);
+       rec_ptr = tdb_find_lock_hash(tdb, key, hash, F_RDLCK, &rec);
+       ok1(rec_ptr);
+       ok1(rec_ptr > 2U*1024*1024*1024);
+       tdb_unlock(tdb, BUCKET(rec.full_hash), F_RDLCK);
+
+       /* Traverse must work. */
+       ok1(tdb_traverse(tdb, test_traverse, &orig_data) == 1);
+
+       /* Delete should work. */
+       ok1(tdb_delete(tdb, key) == 0);
+
+       ok1(tdb_traverse(tdb, test_traverse, NULL) == 0);
+
+       /* Transactions should work. */
+       ok1(tdb_transaction_start(tdb) == 0);
+       ok1(tdb_store(tdb, key, orig_data, TDB_INSERT) == 0);
+
+       data = tdb_fetch(tdb, key);
+       ok1(data.dsize == strlen("world"));
+       ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
+       free(data.dptr);
+       ok1(tdb_transaction_commit(tdb) == 0);
+
+       ok1(tdb_traverse(tdb, test_traverse, &orig_data) == 1);
+       tdb_close(tdb);
+
+       return exit_status();
+}