lib/tdb2/test/run-tdb1-no-lock-during-traverse.c

   1 #include <ccan/tdb2/private.h>
   2 #include <unistd.h>
   3 #include "tdb1-lock-tracking.h"
   4
   5 #define fcntl fcntl_with_lockcheck1
   6
   7 #include "tdb2-source.h"
   8 #include <ccan/tap/tap.h>
   9 #include <stdlib.h>
  10 #include <err.h>
  11 #include "logging.h"
  12
  13 #undef fcntl
  14
  15 #define NUM_ENTRIES 10
  16
  17 static bool prepare_entries(struct tdb_context *tdb)
  18 {
  19         unsigned int i;
  20         TDB_DATA key, data;
  21
  22         for (i = 0; i < NUM_ENTRIES; i++) {
  23                 key.dsize = sizeof(i);
  24                 key.dptr = (void *)&i;
  25                 data.dsize = strlen("world");
  26                 data.dptr = (void *)"world";
  27
  28                 if (tdb_store(tdb, key, data, 0) != TDB_SUCCESS)
  29                         return false;
  30         }
  31         return true;
  32 }
  33
  34 static void delete_entries(struct tdb_context *tdb)
  35 {
  36         unsigned int i;
  37         TDB_DATA key;
  38
  39         for (i = 0; i < NUM_ENTRIES; i++) {
  40                 key.dsize = sizeof(i);
  41                 key.dptr = (void *)&i;
  42
  43                 ok1(tdb_delete(tdb, key) == TDB_SUCCESS);
  44         }
  45 }
  46
  47 /* We don't know how many times this will run. */
  48 static int delete_other(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
  49                         void *private_data)
  50 {
  51         unsigned int i;
  52         memcpy(&i, key.dptr, 4);
  53         i = (i + 1) % NUM_ENTRIES;
  54         key.dptr = (void *)&i;
  55         if (tdb_delete(tdb, key) != TDB_SUCCESS)
  56                 (*(int *)private_data)++;
  57         return 0;
  58 }
  59
  60 static int delete_self(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
  61                         void *private_data)
  62 {
  63         ok1(tdb_delete(tdb, key) == TDB_SUCCESS);
  64         return 0;
  65 }
  66
  67 int main(int argc, char *argv[])
  68 {
  69         struct tdb_context *tdb;
  70         int errors = 0;
  71         union tdb_attribute hsize;
  72
  73         hsize.base.attr = TDB_ATTRIBUTE_TDB1_HASHSIZE;
  74         hsize.base.next = &tap_log_attr;
  75         hsize.tdb1_hashsize.hsize = 1024;
  76
  77         plan_tests(40);
  78         tdb = tdb_open("run-no-lock-during-traverse.tdb1",
  79                        TDB_VERSION1, O_CREAT|O_TRUNC|O_RDWR,
  80                        0600, &hsize);
  81
  82         ok1(tdb);
  83         ok1(prepare_entries(tdb));
  84         ok1(locking_errors1 == 0);
  85         ok1(tdb_lockall(tdb) == 0);
  86         ok1(locking_errors1 == 0);
  87         ok1(tdb_traverse(tdb, delete_other, &errors) >= 0);
  88         ok1(errors == 0);
  89         ok1(locking_errors1 == 0);
  90         tdb_unlockall(tdb);
  91
  92         ok1(prepare_entries(tdb));
  93         ok1(locking_errors1 == 0);
  94         ok1(tdb_lockall(tdb) == 0);
  95         ok1(locking_errors1 == 0);
  96         ok1(tdb_traverse(tdb, delete_self, NULL) == NUM_ENTRIES);
  97         ok1(locking_errors1 == 0);
  98         tdb_unlockall(tdb);
  99
 100         ok1(prepare_entries(tdb));
 101         ok1(locking_errors1 == 0);
 102         ok1(tdb_lockall(tdb) == 0);
 103         ok1(locking_errors1 == 0);
 104         delete_entries(tdb);
 105         ok1(locking_errors1 == 0);
 106         tdb_unlockall(tdb);
 107
 108         ok1(tdb_close(tdb) == 0);
 109
 110         return exit_status();
 111 }