lib/tdb2/test/run-tdb1-3G-file.c

   1 #include "tdb2-source.h"
   2 #include "tap-interface.h"
   3 #include <stdlib.h>
   4 #include <err.h>
   5 #include "logging.h"
   6
   7 static int tdb1_expand_file_sparse(struct tdb_context *tdb,
   8                                   tdb1_off_t size,
   9                                   tdb1_off_t addition)
  10 {
  11         if ((tdb->flags & TDB_RDONLY) || tdb->tdb1.traverse_read) {
  12                 tdb->last_error = TDB_ERR_RDONLY;
  13                 return -1;
  14         }
  15
  16         if (ftruncate(tdb->file->fd, size+addition) == -1) {
  17                 char b = 0;
  18                 ssize_t written = pwrite(tdb->file->fd,  &b, 1, (size+addition) - 1);
  19                 if (written == 0) {
  20                         /* try once more, potentially revealing errno */
  21                         written = pwrite(tdb->file->fd,  &b, 1, (size+addition) - 1);
  22                 }
  23                 if (written == 0) {
  24                         /* again - give up, guessing errno */
  25                         errno = ENOSPC;
  26                 }
  27                 if (written != 1) {
  28                         tdb->last_error = tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR,
  29                                                 "expand_file to %d failed (%s)",
  30                                                 size+addition,
  31                                                 strerror(errno));
  32                         return -1;
  33                 }
  34         }
  35
  36         return 0;
  37 }
  38
  39 static const struct tdb1_methods large_io_methods = {
  40         tdb1_read,
  41         tdb1_write,
  42         tdb1_next_hash_chain,
  43         tdb1_oob,
  44         tdb1_expand_file_sparse
  45 };
  46
  47 static int test_traverse(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data,
  48                          void *_data)
  49 {
  50         TDB_DATA *expect = _data;
  51         ok1(key.dsize == strlen("hi"));
  52         ok1(memcmp(key.dptr, "hi", strlen("hi")) == 0);
  53         ok1(data.dsize == expect->dsize);
  54         ok1(memcmp(data.dptr, expect->dptr, data.dsize) == 0);
  55         return 0;
  56 }
  57
  58 int main(int argc, char *argv[])
  59 {
  60         struct tdb_context *tdb;
  61         TDB_DATA key, orig_data, data;
  62         uint32_t hash;
  63         tdb1_off_t rec_ptr;
  64         struct tdb1_record rec;
  65         union tdb_attribute hsize;
  66         int ret;
  67
  68         hsize.base.attr = TDB_ATTRIBUTE_TDB1_HASHSIZE;
  69         hsize.base.next = &tap_log_attr;
  70         hsize.tdb1_hashsize.hsize = 1024;
  71
  72         plan_tests(26);
  73         tdb = tdb_open("run-36-file.tdb1", TDB_VERSION1,
  74                        O_CREAT|O_TRUNC|O_RDWR, 0600, &hsize);
  75
  76         ok1(tdb);
  77         tdb->tdb1.io = &large_io_methods;
  78
  79         key.dsize = strlen("hi");
  80         key.dptr = (void *)"hi";
  81         orig_data.dsize = strlen("world");
  82         orig_data.dptr = (void *)"world";
  83
  84         /* Enlarge the file (internally multiplies by 2). */
  85         ret = tdb1_expand(tdb, 1500000000);
  86
  87 #ifdef HAVE_INCOHERENT_MMAP
  88         /* This can fail due to mmap failure on 32 bit systems. */
  89         if (ret == -1) {
  90                 /* These should now fail. */
  91                 ok1(tdb_store(tdb, key, orig_data, TDB_INSERT) == TDB_ERR_IO);
  92                 ok1(tdb_fetch(tdb, key, &data) == TDB_ERR_IO);
  93                 ok1(tdb_traverse(tdb, test_traverse, &orig_data) == TDB_ERR_IO);
  94                 ok1(tdb_delete(tdb, key) == TDB_ERR_IO);
  95                 ok1(tdb_traverse(tdb, test_traverse, NULL) == TDB_ERR_IO);
  96                 /* Skip the rest... */
  97                 for (ret = 0; ret < 26 - 6; ret++)
  98                         ok1(1);
  99                 tdb_close(tdb);
 100                 return exit_status();
 101         }
 102 #endif
 103         ok1(ret == 0);
 104
 105         /* Put an entry in, and check it. */
 106         ok1(tdb_store(tdb, key, orig_data, TDB_INSERT) == TDB_SUCCESS);
 107
 108         ok1(tdb_fetch(tdb, key, &data) == TDB_SUCCESS);
 109         ok1(data.dsize == strlen("world"));
 110         ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
 111         free(data.dptr);
 112
 113         /* That currently fills at the end, make sure that's true. */
 114         hash = tdb_hash(tdb, key.dptr, key.dsize);
 115         rec_ptr = tdb1_find_lock_hash(tdb, key, hash, F_RDLCK, &rec);
 116         ok1(rec_ptr);
 117         ok1(rec_ptr > 2U*1024*1024*1024);
 118         tdb1_unlock(tdb, TDB1_BUCKET(rec.full_hash), F_RDLCK);
 119
 120         /* Traverse must work. */
 121         ok1(tdb_traverse(tdb, test_traverse, &orig_data) == 1);
 122
 123         /* Delete should work. */
 124         ok1(tdb_delete(tdb, key) == TDB_SUCCESS);
 125
 126         ok1(tdb_traverse(tdb, test_traverse, NULL) == 0);
 127
 128         /* Transactions should work. */
 129         ok1(tdb_transaction_start(tdb) == TDB_SUCCESS);
 130         ok1(tdb_store(tdb, key, orig_data, TDB_INSERT) == TDB_SUCCESS);
 131
 132         ok1(tdb_fetch(tdb, key, &data) == TDB_SUCCESS);
 133         ok1(data.dsize == strlen("world"));
 134         ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
 135         free(data.dptr);
 136         ok1(tdb_transaction_commit(tdb) == TDB_SUCCESS);
 137
 138         ok1(tdb_traverse(tdb, test_traverse, &orig_data) == 1);
 139         tdb_close(tdb);
 140
 141         return exit_status();
 142 }