};
/* initialise a new database */
-static int tdb_new_database(struct tdb_context *tdb,
- struct tdb_attribute_seed *seed,
- struct tdb_header *hdr)
+static enum TDB_ERROR tdb_new_database(struct tdb_context *tdb,
+ struct tdb_attribute_seed *seed,
+ struct tdb_header *hdr)
{
/* We make it up in memory, then write it out if not internal */
struct new_database newdb;
unsigned int magic_len;
ssize_t rlen;
+ enum TDB_ERROR ecode;
/* Fill in the header */
newdb.hdr.version = TDB_VERSION;
/* Free is empty. */
newdb.hdr.free_table = offsetof(struct new_database, ftable);
memset(&newdb.ftable, 0, sizeof(newdb.ftable));
- tdb->ecode = set_header(NULL, &newdb.ftable.hdr, TDB_FTABLE_MAGIC, 0,
- sizeof(newdb.ftable) - sizeof(newdb.ftable.hdr),
- sizeof(newdb.ftable) - sizeof(newdb.ftable.hdr),
- 0);
- if (tdb->ecode != TDB_SUCCESS) {
- return -1;
+ ecode = set_header(NULL, &newdb.ftable.hdr, TDB_FTABLE_MAGIC, 0,
+ sizeof(newdb.ftable) - sizeof(newdb.ftable.hdr),
+ sizeof(newdb.ftable) - sizeof(newdb.ftable.hdr),
+ 0);
+ if (ecode != TDB_SUCCESS) {
+ return ecode;
}
/* Magic food */
tdb->map_size = sizeof(newdb);
tdb->map_ptr = malloc(tdb->map_size);
if (!tdb->map_ptr) {
- tdb_logerr(tdb, TDB_ERR_OOM, TDB_LOG_ERROR,
- "tdb_new_database: failed to allocate");
- return -1;
+ return tdb_logerr(tdb, TDB_ERR_OOM, TDB_LOG_ERROR,
+ "tdb_new_database:"
+ " failed to allocate");
}
memcpy(tdb->map_ptr, &newdb, tdb->map_size);
- return 0;
+ return TDB_SUCCESS;
+ }
+ if (lseek(tdb->fd, 0, SEEK_SET) == -1) {
+ return tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR,
+ "tdb_new_database:"
+ " failed to seek: %s", strerror(errno));
}
- if (lseek(tdb->fd, 0, SEEK_SET) == -1)
- return -1;
- if (ftruncate(tdb->fd, 0) == -1)
- return -1;
+ if (ftruncate(tdb->fd, 0) == -1) {
+ return tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR,
+ "tdb_new_database:"
+ " failed to truncate: %s", strerror(errno));
+ }
rlen = write(tdb->fd, &newdb, sizeof(newdb));
if (rlen != sizeof(newdb)) {
if (rlen >= 0)
errno = ENOSPC;
- tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR,
- "tdb_new_database: %zi writing header: %s",
- rlen, strerror(errno));
- return -1;
+ return tdb_logerr(tdb, TDB_ERR_IO, TDB_LOG_ERROR,
+ "tdb_new_database: %zi writing header: %s",
+ rlen, strerror(errno));
}
- return 0;
+ return TDB_SUCCESS;
}
struct tdb_context *tdb_open(const char *name, int tdb_flags,
return NULL;
}
-static int update_rec_hdr(struct tdb_context *tdb,
- tdb_off_t off,
- tdb_len_t keylen,
- tdb_len_t datalen,
- struct tdb_used_record *rec,
- uint64_t h)
+static enum TDB_ERROR update_rec_hdr(struct tdb_context *tdb,
+ tdb_off_t off,
+ tdb_len_t keylen,
+ tdb_len_t datalen,
+ struct tdb_used_record *rec,
+ uint64_t h)
{
uint64_t dataroom = rec_data_length(rec) + rec_extra_padding(rec);
enum TDB_ERROR ecode;
ecode = set_header(tdb, rec, TDB_USED_MAGIC, keylen, datalen,
keylen + dataroom, h);
- if (ecode != TDB_SUCCESS) {
- tdb->ecode = ecode;
- return -1;
+ if (ecode == TDB_SUCCESS) {
+ ecode = tdb_write_convert(tdb, off, rec, sizeof(*rec));
}
-
- ecode = tdb_write_convert(tdb, off, rec, sizeof(*rec));
- if (ecode != TDB_SUCCESS) {
- tdb->ecode = ecode;
- return -1;
- }
- return 0;
+ return ecode;
}
-/* Returns -1 on error, 0 on OK */
-static int replace_data(struct tdb_context *tdb,
- struct hash_info *h,
- struct tdb_data key, struct tdb_data dbuf,
- tdb_off_t old_off, tdb_len_t old_room,
- bool growing)
+static enum TDB_ERROR replace_data(struct tdb_context *tdb,
+ struct hash_info *h,
+ struct tdb_data key, struct tdb_data dbuf,
+ tdb_off_t old_off, tdb_len_t old_room,
+ bool growing)
{
tdb_off_t new_off;
enum TDB_ERROR ecode;
new_off = alloc(tdb, key.dsize, dbuf.dsize, h->h, TDB_USED_MAGIC,
growing);
if (TDB_OFF_IS_ERR(new_off)) {
- tdb->ecode = new_off;
- return -1;
+ return new_off;
}
/* We didn't like the existing one: remove it. */
ecode = add_to_hash(tdb, h, new_off);
}
if (ecode != TDB_SUCCESS) {
- tdb->ecode = ecode;
- return -1;
+ return ecode;
}
new_off += sizeof(struct tdb_used_record);
ecode = tdb->methods->twrite(tdb, new_off, key.dptr, key.dsize);
if (ecode != TDB_SUCCESS) {
- tdb->ecode = ecode;
- return -1;
+ return ecode;
}
new_off += key.dsize;
ecode = tdb->methods->twrite(tdb, new_off, dbuf.dptr, dbuf.dsize);
if (ecode != TDB_SUCCESS) {
- tdb->ecode = ecode;
- return -1;
+ return ecode;
}
/* FIXME: tdb_increment_seqnum(tdb); */
- return 0;
+ return TDB_SUCCESS;
}
int tdb_store(struct tdb_context *tdb,
tdb_off_t off;
tdb_len_t old_room = 0;
struct tdb_used_record rec;
- int ret;
enum TDB_ERROR ecode;
off = find_and_lock(tdb, key, F_WRLCK, &h, &rec, NULL);
+ rec_extra_padding(&rec);
if (old_room >= dbuf.dsize) {
/* Can modify in-place. Easy! */
- if (update_rec_hdr(tdb, off,
- key.dsize, dbuf.dsize,
- &rec, h.h))
+ ecode = update_rec_hdr(tdb, off,
+ key.dsize, dbuf.dsize,
+ &rec, h.h);
+ if (ecode != TDB_SUCCESS) {
+ tdb->ecode = ecode;
goto fail;
+ }
ecode = tdb->methods->twrite(tdb,
off + sizeof(rec)
+ key.dsize,
}
/* If we didn't use the old record, this implies we're growing. */
- ret = replace_data(tdb, &h, key, dbuf, off, old_room, off != 0);
+ ecode = replace_data(tdb, &h, key, dbuf, off, old_room, off);
tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range, F_WRLCK);
- return ret;
+ if (ecode != TDB_SUCCESS) {
+ tdb->ecode = ecode;
+ return -1;
+ }
+ return 0;
fail:
tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range, F_WRLCK);
unsigned char *newdata;
struct tdb_data new_dbuf;
enum TDB_ERROR ecode;
- int ret;
off = find_and_lock(tdb, key, F_WRLCK, &h, &rec, NULL);
if (TDB_OFF_IS_ERR(off)) {
/* Fast path: can append in place. */
if (rec_extra_padding(&rec) >= dbuf.dsize) {
- if (update_rec_hdr(tdb, off, key.dsize,
- old_dlen + dbuf.dsize, &rec, h.h))
+ ecode = update_rec_hdr(tdb, off, key.dsize,
+ old_dlen + dbuf.dsize, &rec,
+ h.h);
+ if (ecode != TDB_SUCCESS) {
+ tdb->ecode = ecode;
goto fail;
+ }
off += sizeof(rec) + key.dsize + old_dlen;
ecode = tdb->methods->twrite(tdb, off, dbuf.dptr,
}
/* If they're using tdb_append(), it implies they're growing record. */
- ret = replace_data(tdb, &h, key, new_dbuf, off, old_room, true);
+ ecode = replace_data(tdb, &h, key, new_dbuf, off, old_room, true);
tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range, F_WRLCK);
free(newdata);
- return ret;
+ if (ecode != TDB_SUCCESS) {
+ tdb->ecode = ecode;
+ return -1;
+ }
+ return 0;
fail:
tdb_unlock_hashes(tdb, h.hlock_start, h.hlock_range, F_WRLCK);
projects / ccan / commitdiff