int mail_transaction_log_create(struct mail_transaction_log *log, bool reset)
{
struct mail_transaction_log_file *file;
if (MAIL_INDEX_IS_IN_MEMORY(log->index)) {
file = mail_transaction_log_file_alloc_in_memory(log);
mail_transaction_log_set_head(log, file);
return 0;
}
file = mail_transaction_log_file_alloc(log, log->filepath);
if (log->open_file != NULL) {
/* remember what file we tried to open. if someone else created
a new file, use it instead of recreating it */
file->st_ino = log->open_file->st_ino;
file->st_dev = log->open_file->st_dev;
file->last_size = log->open_file->last_size;
file->last_mtime = log->open_file->last_mtime;
mail_transaction_log_file_free(&log->open_file);
}
if (mail_transaction_log_file_create(file, reset) < 0) {
mail_transaction_log_file_free(&file);
return -1;
}
mail_transaction_log_set_head(log, file);
return 1;
}
int mail_transaction_log_rotate(struct mail_transaction_log *log, bool reset)
{
struct mail_transaction_log_file *file;
const char *path = log->head->filepath;
struct stat st;
int ret;
i_assert(log->head->locked);
if (MAIL_INDEX_IS_IN_MEMORY(log->index)) {
file = mail_transaction_log_file_alloc_in_memory(log);
if (reset) {
file->hdr.prev_file_seq = 0;
file->hdr.prev_file_offset = 0;
}
} else {
/* we're locked, we shouldn't need to worry about ESTALE
problems in here. */
if (fstat(log->head->fd, &st) < 0) {
mail_index_file_set_syscall_error(log->index,
log->head->filepath, "fstat()");
return -1;
}
file = mail_transaction_log_file_alloc(log, path);
file->st_dev = st.st_dev;
file->st_ino = st.st_ino;
file->last_mtime = st.st_mtime;
file->last_size = st.st_size;
if ((ret = mail_transaction_log_file_create(file, reset)) < 0) {
mail_transaction_log_file_free(&file);
return -1;
}
if (ret == 0) {
mail_index_set_error(log->index,
"Transaction log %s was recreated while we had it locked - "
"locking is broken (lock_method=%s)", path,
file_lock_method_to_str(log->index->lock_method));
mail_transaction_log_file_free(&file);
return -1;
}
i_assert(file->locked);
}
if (--log->head->refcount == 0)
mail_transaction_logs_clean(log);
else {
/* the newly created log file is already locked */
mail_transaction_log_file_unlock(log->head,
!log->index->log_sync_locked ? "rotating" :
"rotating while syncing");
}
mail_transaction_log_set_head(log, file);
return 0;
}
int mail_transaction_log_rotate(struct mail_transaction_log *log, bool reset)
{
struct mail_transaction_log_file *file;
const char *path = log->head->filepath;
struct stat st;
i_assert(log->head->locked);
if (MAIL_INDEX_IS_IN_MEMORY(log->index)) {
file = mail_transaction_log_file_alloc_in_memory(log);
if (reset) {
file->hdr.prev_file_seq = 0;
file->hdr.prev_file_offset = 0;
}
} else {
/* we're locked, we shouldn't need to worry about ESTALE
problems in here. */
if (fstat(log->head->fd, &st) < 0) {
mail_index_file_set_syscall_error(log->index,
log->head->filepath, "fstat()");
return -1;
}
file = mail_transaction_log_file_alloc(log, path);
file->st_dev = st.st_dev;
file->st_ino = st.st_ino;
file->last_mtime = st.st_mtime;
file->last_size = st.st_size;
if (mail_transaction_log_file_create(file, reset) < 0) {
mail_transaction_log_file_free(&file);
return -1;
}
}
if (--log->head->refcount == 0)
mail_transaction_logs_clean(log);
else
mail_transaction_log_file_unlock(log->head);
mail_transaction_log_set_head(log, file);
return 0;
}
void mail_transaction_log_move_to_memory(struct mail_transaction_log *log)
{
struct mail_transaction_log_file *file;
if (!log->index->initial_mapped && log->files != NULL &&
log->files->hdr.prev_file_seq != 0) {
/* we couldn't read dovecot.index and we don't have the first
.log file, so just start from scratch */
mail_transaction_log_close(log);
}
i_free(log->filepath);
i_free(log->filepath2);
log->filepath = i_strconcat(log->index->filepath,
MAIL_TRANSACTION_LOG_SUFFIX, NULL);
log->filepath2 = i_strconcat(log->filepath, ".2", NULL);
if (log->head != NULL)
mail_transaction_log_file_move_to_memory(log->head);
else {
file = mail_transaction_log_file_alloc_in_memory(log);
mail_transaction_log_set_head(log, file);
}
}
