lib/ntdb/test/api-83-openhook.c

   1 #include "config.h"
   2 #include "ntdb.h"
   3 #include "tap-interface.h"
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include <fcntl.h>
   7 #include <stdlib.h>
   8 #include <stdbool.h>
   9 #include <stdarg.h>
  10 #include <unistd.h>
  11 #include "external-agent.h"
  12 #include "logging.h"
  13
  14 #define KEY_STR "key"
  15
  16 static enum NTDB_ERROR clear_if_first(int fd, void *arg)
  17 {
  18 /* We hold a lock offset 4 always, so we can tell if anyone is holding it.
  19  * (This is compatible with tdb's TDB_CLEAR_IF_FIRST flag).  */
  20         struct flock fl;
  21
  22         if (arg != clear_if_first)
  23                 return NTDB_ERR_CORRUPT;
  24
  25         fl.l_type = F_WRLCK;
  26         fl.l_whence = SEEK_SET;
  27         fl.l_start = 4;
  28         fl.l_len = 1;
  29
  30         if (fcntl(fd, F_SETLK, &fl) == 0) {
  31                 /* We must be first ones to open it! */
  32                 diag("truncating file!");
  33                 if (ftruncate(fd, 0) != 0) {
  34                         return NTDB_ERR_IO;
  35                 }
  36         }
  37         fl.l_type = F_RDLCK;
  38         if (fcntl(fd, F_SETLKW, &fl) != 0) {
  39                 return NTDB_ERR_IO;
  40         }
  41         return NTDB_SUCCESS;
  42 }
  43
  44 int main(int argc, char *argv[])
  45 {
  46         unsigned int i;
  47         struct ntdb_context *ntdb;
  48         struct agent *agent;
  49         union ntdb_attribute cif;
  50         NTDB_DATA key = ntdb_mkdata(KEY_STR, strlen(KEY_STR));
  51         int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP,
  52                         NTDB_CONVERT, NTDB_NOMMAP|NTDB_CONVERT };
  53
  54         cif.openhook.base.attr = NTDB_ATTRIBUTE_OPENHOOK;
  55         cif.openhook.base.next = &tap_log_attr;
  56         cif.openhook.fn = clear_if_first;
  57         cif.openhook.data = clear_if_first;
  58
  59         agent = prepare_external_agent();
  60         plan_tests(sizeof(flags) / sizeof(flags[0]) * 13);
  61         for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
  62                 /* Create it */
  63                 ntdb = ntdb_open("run-83-openhook.ntdb", flags[i]|MAYBE_NOSYNC,
  64                                  O_RDWR|O_CREAT|O_TRUNC, 0600, NULL);
  65                 ok1(ntdb);
  66                 ok1(ntdb_store(ntdb, key, key, NTDB_REPLACE) == 0);
  67                 ntdb_close(ntdb);
  68
  69                 /* Now, open with CIF, should clear it. */
  70                 ntdb = ntdb_open("run-83-openhook.ntdb", flags[i]|MAYBE_NOSYNC,
  71                                  O_RDWR, 0, &cif);
  72                 ok1(ntdb);
  73                 ok1(!ntdb_exists(ntdb, key));
  74                 ok1(ntdb_store(ntdb, key, key, NTDB_REPLACE) == 0);
  75
  76                 /* Agent should not clear it, since it's still open. */
  77                 ok1(external_agent_operation(agent, OPEN_WITH_HOOK,
  78                                              "run-83-openhook.ntdb") == SUCCESS);
  79                 ok1(external_agent_operation(agent, FETCH, KEY_STR "=" KEY_STR)
  80                     == SUCCESS);
  81                 ok1(external_agent_operation(agent, CLOSE, "") == SUCCESS);
  82
  83                 /* Still exists for us too. */
  84                 ok1(ntdb_exists(ntdb, key));
  85
  86                 /* Close it, now agent should clear it. */
  87                 ntdb_close(ntdb);
  88
  89                 ok1(external_agent_operation(agent, OPEN_WITH_HOOK,
  90                                              "run-83-openhook.ntdb") == SUCCESS);
  91                 ok1(external_agent_operation(agent, FETCH, KEY_STR "=" KEY_STR)
  92                     == FAILED);
  93                 ok1(external_agent_operation(agent, CLOSE, "") == SUCCESS);
  94
  95                 ok1(tap_log_messages == 0);
  96         }
  97
  98         free_external_agent(agent);
  99         return exit_status();
 100 }