1 #define _XOPEN_SOURCE 500
3 #include "lock-tracking.h"
5 static ssize_t pwrite_check(int fd, const void *buf, size_t count, off_t offset);
6 static ssize_t write_check(int fd, const void *buf, size_t count);
7 static int ftruncate_check(int fd, off_t length);
9 #define pwrite pwrite_check
10 #define write write_check
11 #define fcntl fcntl_with_lockcheck
12 #define ftruncate ftruncate_check
14 #include <ccan/tdb/tdb.h>
15 #include <ccan/tdb/io.c>
16 #include <ccan/tdb/tdb.c>
17 #include <ccan/tdb/lock.c>
18 #include <ccan/tdb/freelist.c>
19 #include <ccan/tdb/traverse.c>
20 #include <ccan/tdb/transaction.c>
21 #include <ccan/tdb/error.c>
22 #include <ccan/tdb/open.c>
23 #include <ccan/tdb/check.c>
24 #include <ccan/tap/tap.h>
29 #include "external-agent.h"
32 static struct agent *agent;
34 static int errors = 0;
35 static bool clear_if_first;
36 #define TEST_DBNAME "run-open-during-transaction.tdb"
43 static bool is_same(const char *snapshot, const char *latest, off_t len)
47 for (i = 0; i < len; i++) {
48 if (snapshot[i] != latest[i])
54 static bool compare_file(int fd, const char *snapshot, off_t snapshot_len)
59 /* over-length read serves as length check. */
60 contents = malloc(snapshot_len+1);
61 same = pread(fd, contents, snapshot_len+1, 0) == snapshot_len
62 && is_same(snapshot, contents, snapshot_len);
67 static void check_file_intact(int fd)
69 enum agent_return ret;
74 contents = malloc(st.st_size);
75 if (pread(fd, contents, st.st_size, 0) != st.st_size) {
81 /* Ask agent to open file. */
82 ret = external_agent_operation(agent, clear_if_first ?
83 OPEN_WITH_CLEAR_IF_FIRST :
87 /* It's OK to open it, but it must not have changed! */
88 if (!compare_file(fd, contents, st.st_size)) {
89 diag("Agent changed file after opening %s",
90 agent_return_name(ret));
95 ret = external_agent_operation(agent, CLOSE, NULL);
97 diag("Agent failed to close tdb: %s",
98 agent_return_name(ret));
101 } else if (ret != WOULD_HAVE_BLOCKED) {
102 diag("Agent opening file gave %s",
103 agent_return_name(ret));
110 static void after_unlock(int fd)
113 check_file_intact(fd);
116 static ssize_t pwrite_check(int fd,
117 const void *buf, size_t count, off_t offset)
120 check_file_intact(fd);
122 return pwrite(fd, buf, count, offset);
125 static ssize_t write_check(int fd, const void *buf, size_t count)
128 check_file_intact(fd);
130 return write(fd, buf, count);
133 static int ftruncate_check(int fd, off_t length)
136 check_file_intact(fd);
138 return ftruncate(fd, length);
142 int main(int argc, char *argv[])
144 const int flags[] = { TDB_DEFAULT,
147 TDB_CLEAR_IF_FIRST | TDB_NOMMAP };
149 struct tdb_context *tdb;
153 agent = prepare_external_agent();
155 err(1, "preparing agent");
157 unlock_callback = after_unlock;
158 for (i = 0; i < sizeof(flags)/sizeof(flags[0]); i++) {
159 clear_if_first = (flags[i] & TDB_CLEAR_IF_FIRST);
160 diag("Test with %s and %s\n",
161 clear_if_first ? "CLEAR" : "DEFAULT",
162 (flags[i] & TDB_NOMMAP) ? "no mmap" : "mmap");
164 tdb = tdb_open_ex(TEST_DBNAME, 1024, flags[i],
165 O_CREAT|O_TRUNC|O_RDWR, 0600,
170 ok1(tdb_transaction_start(tdb) == 0);
171 key.dsize = strlen("hi");
172 key.dptr = (void *)"hi";
173 data.dptr = (void *)"world";
174 data.dsize = strlen("world");
176 ok1(tdb_store(tdb, key, data, TDB_INSERT) == 0);
177 ok1(tdb_transaction_commit(tdb) == 0);
178 ok(!errors, "We had %u open errors", errors);
184 return exit_status();