git.ozlabs.org Git - ccan/blob - ccan/tdb2/test/run-tdb1-3G-file.c

   1 /* We need this otherwise fcntl locking fails. */
   2 #define _FILE_OFFSET_BITS 64
   3 #include "tdb2-source.h"
   4 #include <ccan/tap/tap.h>
   5 #include <stdlib.h>
   6 #include <err.h>
   7 #include "tdb1-logging.h"
   8
   9 static int tdb1_expand_file_sparse(struct tdb1_context *tdb,
  10                                   tdb1_off_t size,
  11                                   tdb1_off_t addition)
  12 {
  13         if (tdb->read_only || tdb->traverse_read) {
  14                 tdb->last_error = TDB_ERR_RDONLY;
  15                 return -1;
  16         }
  17
  18         if (ftruncate(tdb->fd, size+addition) == -1) {
  19                 char b = 0;
  20                 ssize_t written = pwrite(tdb->fd,  &b, 1, (size+addition) - 1);
  21                 if (written == 0) {
  22                         /* try once more, potentially revealing errno */
  23                         written = pwrite(tdb->fd,  &b, 1, (size+addition) - 1);
  24                 }
  25                 if (written == 0) {
  26                         /* again - give up, guessing errno */
  27                         errno = ENOSPC;
  28                 }
  29                 if (written != 1) {
  30                         tdb->last_error = tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR,
  31                                                 "expand_file to %d failed (%s)",
  32                                                 size+addition,
  33                                                 strerror(errno));
  34                         return -1;
  35                 }
  36         }
  37
  38         return 0;
  39 }
  40
  41 static const struct tdb1_methods large_io_methods = {
  42         tdb1_read,
  43         tdb1_write,
  44         tdb1_next_hash_chain,
  45         tdb1_oob,
  46         tdb1_expand_file_sparse
  47 };
  48
  49 static int test_traverse(struct tdb1_context *tdb, TDB_DATA key, TDB_DATA data,
  50                          void *_data)
  51 {
  52         TDB_DATA *expect = _data;
  53         ok1(key.dsize == strlen("hi"));
  54         ok1(memcmp(key.dptr, "hi", strlen("hi")) == 0);
  55         ok1(data.dsize == expect->dsize);
  56         ok1(memcmp(data.dptr, expect->dptr, data.dsize) == 0);
  57         return 0;
  58 }
  59
  60 int main(int argc, char *argv[])
  61 {
  62         struct tdb1_context *tdb;
  63         TDB_DATA key, orig_data, data;
  64         uint32_t hash;
  65         tdb1_off_t rec_ptr;
  66         struct tdb1_record rec;
  67
  68         plan_tests(24);
  69         tdb = tdb1_open_ex("run-36-file.tdb", 1024, TDB_DEFAULT,
  70                           O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
  71
  72         ok1(tdb);
  73         tdb->methods = &large_io_methods;
  74
  75         /* Enlarge the file (internally multiplies by 2). */
  76         ok1(tdb1_expand(tdb, 1500000000) == 0);
  77
  78         /* Put an entry in, and check it. */
  79         key.dsize = strlen("hi");
  80         key.dptr = (void *)"hi";
  81         orig_data.dsize = strlen("world");
  82         orig_data.dptr = (void *)"world";
  83
  84         ok1(tdb1_store(tdb, key, orig_data, TDB_INSERT) == 0);
  85
  86         data = tdb1_fetch(tdb, key);
  87         ok1(data.dsize == strlen("world"));
  88         ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
  89         free(data.dptr);
  90
  91         /* That currently fills at the end, make sure that's true. */
  92         hash = tdb->hash_fn(&key);
  93         rec_ptr = tdb1_find_lock_hash(tdb, key, hash, F_RDLCK, &rec);
  94         ok1(rec_ptr);
  95         ok1(rec_ptr > 2U*1024*1024*1024);
  96         tdb1_unlock(tdb, TDB1_BUCKET(rec.full_hash), F_RDLCK);
  97
  98         /* Traverse must work. */
  99         ok1(tdb1_traverse(tdb, test_traverse, &orig_data) == 1);
 100
 101         /* Delete should work. */
 102         ok1(tdb1_delete(tdb, key) == 0);
 103
 104         ok1(tdb1_traverse(tdb, test_traverse, NULL) == 0);
 105
 106         /* Transactions should work. */
 107         ok1(tdb1_transaction_start(tdb) == 0);
 108         ok1(tdb1_store(tdb, key, orig_data, TDB_INSERT) == 0);
 109
 110         data = tdb1_fetch(tdb, key);
 111         ok1(data.dsize == strlen("world"));
 112         ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
 113         free(data.dptr);
 114         ok1(tdb1_transaction_commit(tdb) == 0);
 115
 116         ok1(tdb1_traverse(tdb, test_traverse, &orig_data) == 1);
 117         tdb1_close(tdb);
 118
 119         return exit_status();
 120 }