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 "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         union tdb_attribute hsize;
  13
  14         hsize.base.attr = TDB_ATTRIBUTE_TDB1_HASHSIZE;
  15         hsize.base.next = &tap_log_attr;
  16         hsize.tdb1_hashsize.hsize = 1024;
  17
  18         plan_tests(11);
  19         /* Cannot open fine if complete crap, even with O_CREAT. */
  20         fd = open("run-bad-tdb-header.tdb1", O_RDWR|O_CREAT|O_TRUNC, 0600);
  21         ok1(fd >= 0);
  22         ok1(write(fd, "hello world", 11) == 11);
  23         close(fd);
  24         tdb = tdb_open("run-bad-tdb-header.tdb1", 0, O_RDWR, 0, &tap_log_attr);
  25         ok1(!tdb);
  26         tdb = tdb_open("run-bad-tdb-header.tdb1", 0, O_CREAT|O_RDWR,
  27                         0600, &hsize);
  28         ok1(!tdb);
  29
  30         /* With truncate, will be fine. */
  31         tdb = tdb_open("run-bad-tdb-header.tdb1", TDB_VERSION1,
  32                        O_RDWR|O_CREAT|O_TRUNC, 0600, &hsize);
  33         ok1(tdb);
  34         tdb_close(tdb);
  35
  36         /* Now, with wrong version it should *not* overwrite. */
  37         fd = open("run-bad-tdb-header.tdb1", O_RDWR);
  38         ok1(fd >= 0);
  39         ok1(read(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
  40         ok1(hdr.version == TDB1_VERSION);
  41         hdr.version++;
  42         lseek(fd, 0, SEEK_SET);
  43         ok1(write(fd, &hdr, sizeof(hdr)) == sizeof(hdr));
  44         close(fd);
  45
  46         tdb = tdb_open("run-bad-tdb-header.tdb1", TDB_VERSION1, O_RDWR|O_CREAT,
  47                        0600, &hsize);
  48         ok1(errno == EIO);
  49         ok1(!tdb);
  50
  51         return exit_status();
  52 }