lib/tdb/test/run-3G-file.c

   1 #include "../common/tdb_private.h"
   2 #include "../common/io.c"
   3 #include "../common/tdb.c"
   4 #include "../common/lock.c"
   5 #include "../common/freelist.c"
   6 #include "../common/traverse.c"
   7 #include "../common/transaction.c"
   8 #include "../common/error.c"
   9 #include "../common/open.c"
  10 #include "../common/check.c"
  11 #include "../common/hash.c"
  12 #include "tap-interface.h"
  13 #include <stdlib.h>
  14 #include "logging.h"
  15
  16 static int tdb_expand_file_sparse(struct tdb_context *tdb,
  17                                   tdb_off_t size,
  18                                   tdb_off_t addition)
  19 {
  20         if (tdb->read_only || tdb->traverse_read) {
  21                 tdb->ecode = TDB_ERR_RDONLY;
  22                 return -1;
  23         }
  24
  25         if (ftruncate(tdb->fd, size+addition) == -1) {
  26                 char b = 0;
  27                 ssize_t written = pwrite(tdb->fd,  &b, 1, (size+addition) - 1);
  28                 if (written == 0) {
  29                         /* try once more, potentially revealing errno */
  30                         written = pwrite(tdb->fd,  &b, 1, (size+addition) - 1);
  31                 }
  32                 if (written == 0) {
  33                         /* again - give up, guessing errno */
  34                         errno = ENOSPC;
  35                 }
  36                 if (written != 1) {
  37                         TDB_LOG((tdb, TDB_DEBUG_FATAL, "expand_file to %d failed (%s)\n",
  38                                  size+addition, strerror(errno)));
  39                         return -1;
  40                 }
  41         }
  42
  43         return 0;
  44 }
  45
  46 static const struct tdb_methods large_io_methods = {
  47         tdb_read,
  48         tdb_write,
  49         tdb_next_hash_chain,
  50         tdb_oob,
  51         tdb_expand_file_sparse
  52 };
  53
  54 static int test_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
  55                          void *_data)
  56 {
  57         TDB_DATA *expect = _data;
  58         ok1(key.dsize == strlen("hi"));
  59         ok1(memcmp(key.dptr, "hi", strlen("hi")) == 0);
  60         ok1(data.dsize == expect->dsize);
  61         ok1(memcmp(data.dptr, expect->dptr, data.dsize) == 0);
  62         return 0;
  63 }
  64
  65 int main(int argc, char *argv[])
  66 {
  67         struct tdb_context *tdb;
  68         TDB_DATA key, orig_data, data;
  69         uint32_t hash;
  70         tdb_off_t rec_ptr;
  71         struct tdb_record rec;
  72         int ret;
  73
  74         plan_tests(24);
  75         tdb = tdb_open_ex("run-36-file.tdb", 1024, TDB_CLEAR_IF_FIRST,
  76                           O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
  77
  78         ok1(tdb);
  79         tdb->methods = &large_io_methods;
  80
  81         key.dsize = strlen("hi");
  82         key.dptr = (void *)"hi";
  83         orig_data.dsize = strlen("world");
  84         orig_data.dptr = (void *)"world";
  85
  86         /* Enlarge the file (internally multiplies by 2). */
  87         ret = tdb_expand(tdb, 1500000000);
  88 #ifdef HAVE_INCOHERENT_MMAP
  89         /* This can fail due to mmap failure on 32 bit systems. */
  90         if (ret == -1) {
  91                 /* These should now fail. */
  92                 ok1(tdb_store(tdb, key, orig_data, TDB_INSERT) == -1);
  93                 data = tdb_fetch(tdb, key);
  94                 ok1(data.dptr == NULL);
  95                 ok1(tdb_traverse(tdb, test_traverse, &orig_data) == -1);
  96                 ok1(tdb_delete(tdb, key) == -1);
  97                 ok1(tdb_traverse(tdb, test_traverse, NULL) == -1);
  98                 /* Skip the rest... */
  99                 for (ret = 0; ret < 24 - 6; ret++)
 100                         ok1(1);
 101                 tdb_close(tdb);
 102                 return exit_status();
 103         }
 104 #endif
 105         ok1(ret == 0);
 106
 107         /* Put an entry in, and check it. */
 108         ok1(tdb_store(tdb, key, orig_data, TDB_INSERT) == 0);
 109
 110         data = tdb_fetch(tdb, key);
 111         ok1(data.dsize == strlen("world"));
 112         ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
 113         free(data.dptr);
 114
 115         /* That currently fills at the end, make sure that's true. */
 116         hash = tdb->hash_fn(&key);
 117         rec_ptr = tdb_find_lock_hash(tdb, key, hash, F_RDLCK, &rec);
 118         ok1(rec_ptr);
 119         ok1(rec_ptr > 2U*1024*1024*1024);
 120         tdb_unlock(tdb, BUCKET(rec.full_hash), F_RDLCK);
 121
 122         /* Traverse must work. */
 123         ok1(tdb_traverse(tdb, test_traverse, &orig_data) == 1);
 124
 125         /* Delete should work. */
 126         ok1(tdb_delete(tdb, key) == 0);
 127
 128         ok1(tdb_traverse(tdb, test_traverse, NULL) == 0);
 129
 130         /* Transactions should work. */
 131         ok1(tdb_transaction_start(tdb) == 0);
 132         ok1(tdb_store(tdb, key, orig_data, TDB_INSERT) == 0);
 133
 134         data = tdb_fetch(tdb, key);
 135         ok1(data.dsize == strlen("world"));
 136         ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
 137         free(data.dptr);
 138         ok1(tdb_transaction_commit(tdb) == 0);
 139
 140         ok1(tdb_traverse(tdb, test_traverse, &orig_data) == 1);
 141         tdb_close(tdb);
 142
 143         return exit_status();
 144 }