lib/ntdb/test/run-64-bit-tdb.c

   1 #include "ntdb-source.h"
   2 #include "tap-interface.h"
   3 #include "logging.h"
   4
   5 /* The largest 32-bit value which is still a multiple of NTDB_PGSIZE */
   6 #define ALMOST_4G ((uint32_t)-NTDB_PGSIZE)
   7 /* And this pushes it over 32 bits */
   8 #define A_LITTLE_BIT (NTDB_PGSIZE * 2)
   9
  10 int main(int argc, char *argv[])
  11 {
  12         unsigned int i;
  13         struct ntdb_context *ntdb;
  14         int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP,
  15                         NTDB_CONVERT,
  16                         NTDB_NOMMAP|NTDB_CONVERT };
  17
  18         if (sizeof(off_t) <= 4) {
  19                 plan_tests(1);
  20                 pass("No 64 bit off_t");
  21                 return exit_status();
  22         }
  23
  24         plan_tests(sizeof(flags) / sizeof(flags[0]) * 16);
  25         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  26                 off_t old_size;
  27                 NTDB_DATA k, d;
  28                 struct hash_info h;
  29                 struct ntdb_used_record rec;
  30                 ntdb_off_t off;
  31
  32                 ntdb = ntdb_open("run-64-bit-ntdb.ntdb", flags[i]|MAYBE_NOSYNC,
  33                                  O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
  34                 ok1(ntdb);
  35                 if (!ntdb)
  36                         continue;
  37
  38                 old_size = ntdb->file->map_size;
  39
  40                 /* Add a fake record to chew up the existing free space. */
  41                 k = ntdb_mkdata("fake", 4);
  42                 d.dsize = ntdb->file->map_size
  43                         - NEW_DATABASE_HDR_SIZE(ntdb->hash_bits) - 8;
  44                 d.dptr = malloc(d.dsize);
  45                 memset(d.dptr, 0, d.dsize);
  46                 ok1(ntdb_store(ntdb, k, d, NTDB_INSERT) == 0);
  47                 ok1(ntdb->file->map_size == old_size);
  48                 free(d.dptr);
  49
  50                 /* This makes a sparse file */
  51                 ok1(ftruncate(ntdb->file->fd, ALMOST_4G) == 0);
  52                 ok1(add_free_record(ntdb, old_size, ALMOST_4G - old_size,
  53                                     NTDB_LOCK_WAIT, false) == NTDB_SUCCESS);
  54
  55                 /* Now add a little record past the 4G barrier. */
  56                 ok1(ntdb_expand_file(ntdb, A_LITTLE_BIT) == NTDB_SUCCESS);
  57                 ok1(add_free_record(ntdb, ALMOST_4G, A_LITTLE_BIT,
  58                                     NTDB_LOCK_WAIT, false)
  59                     == NTDB_SUCCESS);
  60
  61                 ok1(ntdb_check(ntdb, NULL, NULL) == NTDB_SUCCESS);
  62
  63                 /* Test allocation path. */
  64                 k = ntdb_mkdata("key", 4);
  65                 d = ntdb_mkdata("data", 5);
  66                 ok1(ntdb_store(ntdb, k, d, NTDB_INSERT) == 0);
  67                 ok1(ntdb_check(ntdb, NULL, NULL) == NTDB_SUCCESS);
  68
  69                 /* Make sure it put it at end as we expected. */
  70                 off = find_and_lock(ntdb, k, F_RDLCK, &h, &rec, NULL);
  71                 ok1(off >= ALMOST_4G);
  72                 ntdb_unlock_hash(ntdb, h.h, F_RDLCK);
  73
  74                 ok1(ntdb_fetch(ntdb, k, &d) == 0);
  75                 ok1(d.dsize == 5);
  76                 ok1(strcmp((char *)d.dptr, "data") == 0);
  77                 free(d.dptr);
  78
  79                 ok1(ntdb_delete(ntdb, k) == 0);
  80                 ok1(ntdb_check(ntdb, NULL, NULL) == NTDB_SUCCESS);
  81
  82                 ntdb_close(ntdb);
  83         }
  84
  85         /* We might get messages about mmap failing, so don't test
  86          * tap_log_messages */
  87         return exit_status();
  88 }