1 #include "tdb2-source.h"
2 #include <ccan/tap/tap.h>
5 #include "tdb1-logging.h"
7 static int check(TDB_DATA key, TDB_DATA data, void *private)
9 unsigned int *sizes = private;
11 if (key.dsize > strlen("hello"))
13 if (memcmp(key.dptr, "hello", key.dsize) != 0)
16 if (data.dsize != strlen("world"))
18 if (memcmp(data.dptr, "world", data.dsize) != 0)
21 sizes[0] += key.dsize;
22 sizes[1] += data.dsize;
26 static void tdb1_flip_bit(struct tdb1_context *tdb, unsigned int bit)
28 unsigned int off = bit / CHAR_BIT;
29 unsigned char mask = (1 << (bit % CHAR_BIT));
31 if (tdb->file->map_ptr)
32 ((unsigned char *)tdb->file->map_ptr)[off] ^= mask;
35 if (pread(tdb->file->fd, &c, 1, off) != 1)
38 if (pwrite(tdb->file->fd, &c, 1, off) != 1)
43 static void check_test(struct tdb1_context *tdb)
46 unsigned int i, verifiable, corrupt, sizes[2], dsize, ksize;
48 ok1(tdb1_check(tdb, NULL, NULL) == 0);
50 key.dptr = (void *)"hello";
51 data.dsize = strlen("world");
52 data.dptr = (void *)"world";
54 /* Key and data size respectively. */
57 /* 5 keys in hash size 2 means we'll have multichains. */
58 for (key.dsize = 1; key.dsize <= 5; key.dsize++) {
61 if (tdb1_store(tdb, key, data, TDB_INSERT) != 0)
65 /* This is how many bytes we expect to be verifiable. */
66 /* From the file header. */
67 verifiable = strlen(TDB_MAGIC_FOOD) + 1
68 + 2 * sizeof(uint32_t) + 2 * sizeof(tdb1_off_t)
69 + 2 * sizeof(uint32_t);
70 /* From the free list chain and hash chains. */
71 verifiable += 3 * sizeof(tdb1_off_t);
72 /* From the record headers & tailer */
73 verifiable += 5 * (sizeof(struct tdb1_record) + sizeof(uint32_t));
74 /* The free block: we ignore datalen, keylen, full_hash. */
75 verifiable += sizeof(struct tdb1_record) - 3*sizeof(uint32_t) +
77 /* Our check function verifies the key and data. */
78 verifiable += ksize + dsize;
80 /* Flip one bit at a time, make sure it detects verifiable bytes. */
81 for (i = 0, corrupt = 0; i < tdb->file->map_size * CHAR_BIT; i++) {
82 tdb1_flip_bit(tdb, i);
83 memset(sizes, 0, sizeof(sizes));
84 if (tdb1_check(tdb, check, sizes) != 0)
86 else if (sizes[0] != ksize || sizes[1] != dsize)
88 tdb1_flip_bit(tdb, i);
90 ok(corrupt == verifiable * CHAR_BIT, "corrupt %u should be %u",
91 corrupt, verifiable * CHAR_BIT);
94 int main(int argc, char *argv[])
96 struct tdb1_context *tdb;
99 /* This should use mmap. */
100 tdb = tdb1_open_ex("run-corrupt.tdb", 2, TDB_DEFAULT,
101 O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
108 /* This should not. */
109 tdb = tdb1_open_ex("run-corrupt.tdb", 2, TDB_NOMMAP,
110 O_CREAT|O_TRUNC|O_RDWR, 0600, &taplogctx, NULL);
117 return exit_status();