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->ecode = TDB1_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                         TDB1_LOG((tdb, TDB1_DEBUG_FATAL, "expand_file to %d failed (%s)\n",
  31                                  size+addition, 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 tdb1_context *tdb, TDB1_DATA key, TDB1_DATA data,
  48                          void *_data)
  49 {
  50         TDB1_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 tdb1_context *tdb;
  61         TDB1_DATA key, orig_data, data;
  62         uint32_t hash;
  63         tdb1_off_t rec_ptr;
  64         struct tdb1_record rec;
  65
  66         plan_tests(24);
  67         tdb = tdb1_open_ex("run-36-file.tdb", 1024, TDB1_CLEAR_IF_FIRST,
  68                           O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
  69
  70         ok1(tdb);
  71         tdb->methods = &large_io_methods;
  72
  73         /* Enlarge the file (internally multiplies by 2). */
  74         ok1(tdb1_expand(tdb, 1500000000) == 0);
  75
  76         /* Put an entry in, and check it. */
  77         key.dsize = strlen("hi");
  78         key.dptr = (void *)"hi";
  79         orig_data.dsize = strlen("world");
  80         orig_data.dptr = (void *)"world";
  81
  82         ok1(tdb1_store(tdb, key, orig_data, TDB1_INSERT) == 0);
  83
  84         data = tdb1_fetch(tdb, key);
  85         ok1(data.dsize == strlen("world"));
  86         ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
  87         free(data.dptr);
  88
  89         /* That currently fills at the end, make sure that's true. */
  90         hash = tdb->hash_fn(&key);
  91         rec_ptr = tdb1_find_lock_hash(tdb, key, hash, F_RDLCK, &rec);
  92         ok1(rec_ptr);
  93         ok1(rec_ptr > 2U*1024*1024*1024);
  94         tdb1_unlock(tdb, TDB1_BUCKET(rec.full_hash), F_RDLCK);
  95
  96         /* Traverse must work. */
  97         ok1(tdb1_traverse(tdb, test_traverse, &orig_data) == 1);
  98
  99         /* Delete should work. */
 100         ok1(tdb1_delete(tdb, key) == 0);
 101
 102         ok1(tdb1_traverse(tdb, test_traverse, NULL) == 0);
 103
 104         /* Transactions should work. */
 105         ok1(tdb1_transaction_start(tdb) == 0);
 106         ok1(tdb1_store(tdb, key, orig_data, TDB1_INSERT) == 0);
 107
 108         data = tdb1_fetch(tdb, key);
 109         ok1(data.dsize == strlen("world"));
 110         ok1(memcmp(data.dptr, "world", strlen("world")) == 0);
 111         free(data.dptr);
 112         ok1(tdb1_transaction_commit(tdb) == 0);
 113
 114         ok1(tdb1_traverse(tdb, test_traverse, &orig_data) == 1);
 115         tdb1_close(tdb);
 116
 117         return exit_status();
 118 }