5 * tdb2 - [[WORK IN PROGRESS!]] The trivial (64bit transactional) database
7 * The tdb2 module provides an efficient keyword data mapping (usually
8 * within a file). It supports transactions, so the contents of the
9 * database is reliable even across crashes.
12 * #include <ccan/tdb2/tdb2.h>
13 * #include <ccan/str/str.h>
17 * static void usage(const char *argv0)
19 * errx(1, "Usage: %s fetch <dbfile> <key>\n"
20 * "OR %s store <dbfile> <key> <data>", argv0, argv0);
23 * int main(int argc, char *argv[])
25 * struct tdb_context *tdb;
26 * TDB_DATA key, value;
31 * tdb = tdb_open(argv[2], TDB_DEFAULT, O_CREAT|O_RDWR,0600, NULL);
33 * err(1, "Opening %s", argv[2]);
35 * key.dptr = (void *)argv[3];
36 * key.dsize = strlen(argv[3]);
38 * if (streq(argv[1], "fetch")) {
41 * value = tdb_fetch(tdb, key);
43 * errx(1, "fetch %s: %s",
44 * argv[3], tdb_errorstr(tdb));
45 * printf("%.*s\n", value.dsize, (char *)value.dptr);
47 * } else if (streq(argv[1], "store")) {
50 * value.dptr = (void *)argv[4];
51 * value.dsize = strlen(argv[4]);
52 * if (tdb_store(tdb, key, value, 0) != 0)
53 * errx(1, "store %s: %s",
54 * argv[3], tdb_errorstr(tdb));
61 * Maintainer: Rusty Russell <rusty@rustcorp.com.au>
63 * Author: Rusty Russell
65 * License: LGPLv3 (or later)
68 * // hash fails because it accesses data in 4 byte quantities for speed.
69 * tests_pass_valgrind --partial-loads-ok=yes
71 int main(int argc, char *argv[])
76 if (strcmp(argv[1], "depends") == 0) {
77 printf("ccan/hash\n");
78 printf("ccan/likely\n");
79 printf("ccan/asearch\n");
80 printf("ccan/compiler\n");
81 printf("ccan/build_assert\n");
82 printf("ccan/ilog\n");
83 printf("ccan/tally\n");