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