1 #define _XOPEN_SOURCE 500
2 #include <ccan/tdb/tdb.h>
3 #include <ccan/tdb/io.c>
4 #include <ccan/tdb/tdb.c>
5 #include <ccan/tdb/lock.c>
6 #include <ccan/tdb/freelist.c>
7 #include <ccan/tdb/traverse.c>
8 #include <ccan/tdb/transaction.c>
9 #include <ccan/tdb/error.c>
10 #include <ccan/tdb/open.c>
11 #include <ccan/tdb/check.c>
12 #include <ccan/tdb/hash.c>
13 #include <ccan/tap/tap.h>
18 static int check(TDB_DATA key, TDB_DATA data, void *private)
20 unsigned int *sizes = private;
22 if (key.dsize > strlen("hello"))
24 if (memcmp(key.dptr, "hello", key.dsize) != 0)
27 if (data.dsize != strlen("world"))
29 if (memcmp(data.dptr, "world", data.dsize) != 0)
32 sizes[0] += key.dsize;
33 sizes[1] += data.dsize;
37 static void tdb_flip_bit(struct tdb_context *tdb, unsigned int bit)
39 unsigned int off = bit / CHAR_BIT;
40 unsigned char mask = (1 << (bit % CHAR_BIT));
43 ((unsigned char *)tdb->map_ptr)[off] ^= mask;
46 if (pread(tdb->fd, &c, 1, off) != 1)
49 if (pwrite(tdb->fd, &c, 1, off) != 1)
54 static void check_test(struct tdb_context *tdb)
57 unsigned int i, verifiable, corrupt, sizes[2], dsize, ksize;
59 ok1(tdb_check(tdb, NULL, NULL) == 0);
61 key.dptr = (void *)"hello";
62 data.dsize = strlen("world");
63 data.dptr = (void *)"world";
65 /* Key and data size respectively. */
68 /* 5 keys in hash size 2 means we'll have multichains. */
69 for (key.dsize = 1; key.dsize <= 5; key.dsize++) {
72 if (tdb_store(tdb, key, data, TDB_INSERT) != 0)
76 /* This is how many bytes we expect to be verifiable. */
77 /* From the file header. */
78 verifiable = strlen(TDB_MAGIC_FOOD) + 1
79 + 2 * sizeof(uint32_t) + 2 * sizeof(tdb_off_t)
80 + 2 * sizeof(uint32_t);
81 /* From the free list chain and hash chains. */
82 verifiable += 3 * sizeof(tdb_off_t);
83 /* From the record headers & tailer */
84 verifiable += 5 * (sizeof(struct tdb_record) + sizeof(uint32_t));
85 /* The free block: we ignore datalen, keylen, full_hash. */
86 verifiable += sizeof(struct tdb_record) - 3*sizeof(uint32_t) +
88 /* Our check function verifies the key and data. */
89 verifiable += ksize + dsize;
91 /* Flip one bit at a time, make sure it detects verifiable bytes. */
92 for (i = 0, corrupt = 0; i < tdb->map_size * CHAR_BIT; i++) {
94 memset(sizes, 0, sizeof(sizes));
95 if (tdb_check(tdb, check, sizes) != 0)
97 else if (sizes[0] != ksize || sizes[1] != dsize)
101 ok(corrupt == verifiable * CHAR_BIT, "corrupt %u should be %u",
102 corrupt, verifiable * CHAR_BIT);
105 int main(int argc, char *argv[])
107 struct tdb_context *tdb;
110 /* This should use mmap. */
111 tdb = tdb_open_ex("run-corrupt.tdb", 2, TDB_CLEAR_IF_FIRST,
112 O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
119 /* This should not. */
120 tdb = tdb_open_ex("run-corrupt.tdb", 2, TDB_CLEAR_IF_FIRST|TDB_NOMMAP,
121 O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
128 return exit_status();