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/tdb/hash.c>
25 #include <ccan/tap/tap.h>
30 #include "external-agent.h"
33 static struct agent *agent;
35 static int errors = 0;
36 static bool clear_if_first;
37 #define TEST_DBNAME "run-open-during-transaction.tdb"
44 static bool is_same(const char *snapshot, const char *latest, off_t len)
48 for (i = 0; i < len; i++) {
49 if (snapshot[i] != latest[i])
55 static bool compare_file(int fd, const char *snapshot, off_t snapshot_len)
60 /* over-length read serves as length check. */
61 contents = malloc(snapshot_len+1);
62 same = pread(fd, contents, snapshot_len+1, 0) == snapshot_len
63 && is_same(snapshot, contents, snapshot_len);
68 static void check_file_intact(int fd)
70 enum agent_return ret;
75 contents = malloc(st.st_size);
76 if (pread(fd, contents, st.st_size, 0) != st.st_size) {
82 /* Ask agent to open file. */
83 ret = external_agent_operation(agent, clear_if_first ?
84 OPEN_WITH_CLEAR_IF_FIRST :
88 /* It's OK to open it, but it must not have changed! */
89 if (!compare_file(fd, contents, st.st_size)) {
90 diag("Agent changed file after opening %s",
91 agent_return_name(ret));
96 ret = external_agent_operation(agent, CLOSE, NULL);
98 diag("Agent failed to close tdb: %s",
99 agent_return_name(ret));
102 } else if (ret != WOULD_HAVE_BLOCKED) {
103 diag("Agent opening file gave %s",
104 agent_return_name(ret));
111 static void after_unlock(int fd)
114 check_file_intact(fd);
117 static ssize_t pwrite_check(int fd,
118 const void *buf, size_t count, off_t offset)
121 check_file_intact(fd);
123 return pwrite(fd, buf, count, offset);
126 static ssize_t write_check(int fd, const void *buf, size_t count)
129 check_file_intact(fd);
131 return write(fd, buf, count);
134 static int ftruncate_check(int fd, off_t length)
137 check_file_intact(fd);
139 return ftruncate(fd, length);
143 int main(int argc, char *argv[])
145 const int flags[] = { TDB_DEFAULT,
148 TDB_CLEAR_IF_FIRST | TDB_NOMMAP };
150 struct tdb_context *tdb;
154 agent = prepare_external_agent();
156 err(1, "preparing agent");
158 unlock_callback = after_unlock;
159 for (i = 0; i < sizeof(flags)/sizeof(flags[0]); i++) {
160 clear_if_first = (flags[i] & TDB_CLEAR_IF_FIRST);
161 diag("Test with %s and %s\n",
162 clear_if_first ? "CLEAR" : "DEFAULT",
163 (flags[i] & TDB_NOMMAP) ? "no mmap" : "mmap");
165 tdb = tdb_open_ex(TEST_DBNAME, 1024, flags[i],
166 O_CREAT|O_TRUNC|O_RDWR, 0600,
171 ok1(tdb_transaction_start(tdb) == 0);
172 key.dsize = strlen("hi");
173 key.dptr = (void *)"hi";
174 data.dptr = (void *)"world";
175 data.dsize = strlen("world");
177 ok1(tdb_store(tdb, key, data, TDB_INSERT) == 0);
178 ok1(tdb_transaction_commit(tdb) == 0);
179 ok(!errors, "We had %u open errors", errors);
185 return exit_status();