lib/ntdb/test/api-94-expand-during-parse.c

   1 /* We use direct access to hand to the parse function: what if db expands? */
   2 #include "config.h"
   3 #include "ntdb.h"
   4 #include "tap-interface.h"
   5 #include <sys/types.h>
   6 #include <sys/stat.h>
   7 #include <fcntl.h>
   8 #include "logging.h"
   9 #include "../private.h" /* To establish size, esp. for NTDB_INTERNAL dbs */
  10
  11 static struct ntdb_context *ntdb;
  12
  13 static off_t ntdb_size(void)
  14 {
  15         return ntdb->file->map_size;
  16 }
  17
  18 struct parse_info {
  19         unsigned int depth;
  20         NTDB_DATA expected;
  21 };
  22
  23 static enum NTDB_ERROR parse(NTDB_DATA key, NTDB_DATA data,
  24                              struct parse_info *pinfo)
  25 {
  26         off_t flen;
  27         unsigned int i;
  28
  29         if (!ntdb_deq(data, pinfo->expected))
  30                 return NTDB_ERR_EINVAL;
  31
  32         flen = ntdb_size();
  33
  34         for (i = 0; ntdb_size() == flen; i++) {
  35                 NTDB_DATA add = ntdb_mkdata(&i, sizeof(i));
  36
  37                 /* This is technically illegal parse(), which is why we
  38                  * grabbed allrecord lock.*/
  39                 ntdb_store(ntdb, add, add, NTDB_INSERT);
  40         }
  41
  42         /* Access the record again. */
  43         if (!ntdb_deq(data, pinfo->expected))
  44                 return NTDB_ERR_EINVAL;
  45
  46         /* Recurse!  Woot! */
  47         if (pinfo->depth != 0) {
  48                 enum NTDB_ERROR ecode;
  49
  50                 pinfo->depth--;
  51                 ecode = ntdb_parse_record(ntdb, key, parse, pinfo);
  52                 if (ecode) {
  53                         return ecode;
  54                 }
  55         }
  56
  57         /* Access the record one more time. */
  58         if (!ntdb_deq(data, pinfo->expected))
  59                 return NTDB_ERR_EINVAL;
  60
  61         return NTDB_SUCCESS;
  62 }
  63
  64 int main(int argc, char *argv[])
  65 {
  66         unsigned int i;
  67         int flags[] = { NTDB_INTERNAL, NTDB_DEFAULT, NTDB_NOMMAP,
  68                         NTDB_INTERNAL|NTDB_CONVERT, NTDB_CONVERT,
  69                         NTDB_NOMMAP|NTDB_CONVERT };
  70         struct parse_info pinfo;
  71         NTDB_DATA key = ntdb_mkdata("hello", 5), data = ntdb_mkdata("world", 5);
  72
  73         plan_tests(sizeof(flags) / sizeof(flags[0]) * 3 + 1);
  74         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  75                 ntdb = ntdb_open("api-94-expand-during-parse.ntdb",
  76                                  flags[i]|MAYBE_NOSYNC,
  77                                  O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
  78                 ok1(ntdb_store(ntdb, key, data, NTDB_INSERT) == NTDB_SUCCESS);
  79                 ok1(ntdb_lockall(ntdb) == NTDB_SUCCESS);
  80                 pinfo.expected = data;
  81                 pinfo.depth = 3;
  82                 ok1(ntdb_parse_record(ntdb, key, parse, &pinfo) == NTDB_SUCCESS);
  83                 ntdb_unlockall(ntdb);
  84                 ntdb_close(ntdb);
  85         }
  86
  87         ok1(tap_log_messages == 0);
  88         return exit_status();
  89 }