lib/ntdb/test/run-25-hashoverload.c

   1 #include "ntdb-source.h"
   2 #include "tap-interface.h"
   3 #include "logging.h"
   4
   5 #define OVERLOAD 100
   6
   7 static uint32_t badhash(const void *key, size_t len, uint32_t seed, void *priv)
   8 {
   9         return 0;
  10 }
  11
  12 static int trav(struct ntdb_context *ntdb, NTDB_DATA key, NTDB_DATA dbuf, void *p)
  13 {
  14         if (p)
  15                 return ntdb_delete(ntdb, key);
  16         return 0;
  17 }
  18
  19 int main(int argc, char *argv[])
  20 {
  21         unsigned int i, j;
  22         struct ntdb_context *ntdb;
  23         NTDB_DATA key = { (unsigned char *)&j, sizeof(j) };
  24         NTDB_DATA dbuf = { (unsigned char *)&j, sizeof(j) };
  25         union ntdb_attribute hattr = { .hash = { .base = { NTDB_ATTRIBUTE_HASH },
  26                                                 .fn = badhash } };
  27         int flags[] = { NTDB_INTERNAL, NTDB_DEFAULT, NTDB_NOMMAP,
  28                         NTDB_INTERNAL|NTDB_CONVERT, NTDB_CONVERT,
  29                         NTDB_NOMMAP|NTDB_CONVERT,
  30         };
  31
  32         hattr.base.next = &tap_log_attr;
  33
  34         plan_tests(sizeof(flags) / sizeof(flags[0]) * (7 * OVERLOAD + 11) + 1);
  35         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  36                 NTDB_DATA d = { NULL, 0 }; /* Bogus GCC warning */
  37
  38                 ntdb = ntdb_open("run-25-hashoverload.ntdb",
  39                                  flags[i]|MAYBE_NOSYNC,
  40                                  O_RDWR|O_CREAT|O_TRUNC, 0600, &hattr);
  41                 ok1(ntdb);
  42                 if (!ntdb)
  43                         continue;
  44
  45                 /* Overload a bucket. */
  46                 for (j = 0; j < OVERLOAD; j++) {
  47                         ok1(ntdb_store(ntdb, key, dbuf, NTDB_INSERT) == 0);
  48                 }
  49                 ok1(ntdb_check(ntdb, NULL, NULL) == 0);
  50
  51                 /* Check we can find them all. */
  52                 for (j = 0; j < OVERLOAD; j++) {
  53                         ok1(ntdb_fetch(ntdb, key, &d) == NTDB_SUCCESS);
  54                         ok1(d.dsize == sizeof(j));
  55                         ok1(d.dptr != NULL);
  56                         ok1(d.dptr && memcmp(d.dptr, &j, d.dsize) == 0);
  57                         free(d.dptr);
  58                 }
  59
  60                 /* Traverse through them. */
  61                 ok1(ntdb_traverse(ntdb, trav, NULL) == OVERLOAD);
  62
  63                 /* Delete the first 99. */
  64                 for (j = 0; j < OVERLOAD-1; j++)
  65                         ok1(ntdb_delete(ntdb, key) == 0);
  66
  67                 ok1(ntdb_check(ntdb, NULL, NULL) == 0);
  68
  69                 ok1(ntdb_fetch(ntdb, key, &d) == NTDB_SUCCESS);
  70                 ok1(d.dsize == sizeof(j));
  71                 ok1(d.dptr != NULL);
  72                 ok1(d.dptr && memcmp(d.dptr, &j, d.dsize) == 0);
  73                 free(d.dptr);
  74
  75                 /* Traverse through them. */
  76                 ok1(ntdb_traverse(ntdb, trav, NULL) == 1);
  77
  78                 /* Re-add */
  79                 for (j = 0; j < OVERLOAD-1; j++) {
  80                         ok1(ntdb_store(ntdb, key, dbuf, NTDB_INSERT) == 0);
  81                 }
  82                 ok1(ntdb_check(ntdb, NULL, NULL) == 0);
  83
  84                 /* Now try deleting as we go. */
  85                 ok1(ntdb_traverse(ntdb, trav, trav) == OVERLOAD);
  86                 ok1(ntdb_check(ntdb, NULL, NULL) == 0);
  87                 ok1(ntdb_traverse(ntdb, trav, NULL) == 0);
  88                 ntdb_close(ntdb);
  89         }
  90
  91         ok1(tap_log_messages == 0);
  92         return exit_status();
  93 }