git.ozlabs.org Git - ccan/blob - ccan/tdb2/test/run-tdb1-bad-tdb-header.c

   1 #include "tdb2-source.h"
   2 #include <ccan/tap/tap.h>
   3 #include <stdlib.h>
   4 #include <err.h>
   5 #include "tdb1-logging.h"
   6
   7 int main(int argc, char *argv[])
   8 {
   9         struct tdb_context *tdb;
  10         struct tdb1_header hdr;
  11         int fd;
  12
  13         plan_tests(11);
  14         /* Can open fine if complete crap, as long as O_CREAT. */
  15         fd = open("run-bad-tdb-header.tdb", O_RDWR|O_CREAT|O_TRUNC, 0600);
  16         ok1(fd >= 0);
  17         ok1(write(fd, "hello world", 11) == 11);
  18         close(fd);
  19         tdb = tdb1_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_RDWR, 0,
  20                           &taplogctx, NULL);
  21         ok1(!tdb);
  22         tdb = tdb1_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_CREAT|O_RDWR,
  23                           0600, &taplogctx, NULL);
  24         ok1(tdb);
  25         tdb1_close(tdb);
  26
  27         /* Now, with wrong version it should *not* overwrite. */
  28         fd = open("run-bad-tdb-header.tdb", O_RDWR);
  29         ok1(fd >= 0);
  30         ok1(read(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
  31         ok1(hdr.version == TDB1_VERSION);
  32         hdr.version++;
  33         lseek(fd, 0, SEEK_SET);
  34         ok1(write(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
  35         close(fd);
  36
  37         tdb = tdb1_open_ex("run-bad-tdb-header.tdb", 1024, 0, O_RDWR|O_CREAT,
  38                           0600, &taplogctx, NULL);
  39         ok1(errno == EIO);
  40         ok1(!tdb);
  41
  42         /* With truncate, will be fine. */
  43         tdb = tdb1_open_ex("run-bad-tdb-header.tdb", 1024, 0,
  44                           O_RDWR|O_CREAT|O_TRUNC, 0600, &taplogctx, NULL);
  45         ok1(tdb);
  46         tdb1_close(tdb);
  47
  48         return exit_status();
  49 }