git.ozlabs.org Git - ccan/blob - ccan/tdb/test/run-bad-tdb-header.c

   1 #define _XOPEN_SOURCE 500
   2 #include <ccan/tdb/tdb.h>
   3 #include <ccan/tdb/io.c>
   4 #include <ccan/tdb/tdb.c>
   5 #include <ccan/tdb/lock.c>
   6 #include <ccan/tdb/freelist.c>
   7 #include <ccan/tdb/traverse.c>
   8 #include <ccan/tdb/transaction.c>
   9 #include <ccan/tdb/error.c>
  10 #include <ccan/tdb/open.c>
  11 #include <ccan/tdb/check.c>
  12 #include <ccan/tap/tap.h>
  13 #include <stdlib.h>
  14 #include <err.h>
  15 #include "logging.h"
  16
  17 int main(int argc, char *argv[])
  18 {
  19         struct tdb_context *tdb;
  20         struct tdb_header hdr;
  21         int fd;
  22
  23         plan_tests(11);
  24         /* Can open fine if complete crap, as long as O_CREAT. */
  25         fd = open("run-bad-tdb-header.tdb", O_RDWR|O_CREAT|O_TRUNC, 0600);
  26         ok1(fd >= 0);
  27         ok1(write(fd, "hello world", 11) == 11);
  28         close(fd);
  29         tdb = tdb_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_RDWR, 0,
  30                           &taplogctx, NULL);
  31         ok1(!tdb);
  32         tdb = tdb_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_CREAT|O_RDWR,
  33                           0600, &taplogctx, NULL);
  34         ok1(tdb);
  35         tdb_close(tdb);
  36
  37         /* Now, with wrong version it should *not* overwrite. */
  38         fd = open("run-bad-tdb-header.tdb", O_RDWR);
  39         ok1(fd >= 0);
  40         ok1(read(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
  41         ok1(hdr.version == TDB_VERSION);
  42         hdr.version++;
  43         lseek(fd, 0, SEEK_SET);
  44         ok1(write(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
  45         close(fd);
  46
  47         tdb = tdb_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_RDWR|O_CREAT,
  48                           0600, &taplogctx, NULL);
  49         ok1(errno == EIO);
  50         ok1(!tdb);
  51
  52         /* With truncate, will be fine. */
  53         tdb = tdb_open_ex("run-bad-tdb-header.tdb", 1024, 0,
  54                           O_RDWR|O_CREAT|O_TRUNC, 0600, &taplogctx, NULL);
  55         ok1(tdb);
  56         tdb_close(tdb);
  57
  58         return exit_status();
  59 }