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Storage: Adjust record_information correctly when erasing pages and deleting contacts

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H1ghBre4k3r 2021-05-03 23:31:51 +02:00 committed by Patrick Rathje
parent 970a42aea8
commit e36bfa751a
2 changed files with 16 additions and 5 deletions
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20
src/ens/storage.c
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@ -127,12 +127,25 @@ int load_record(record_t* dest, record_sequence_number_t sn) {
}
int add_record(record_t* src) {
int sectorsToDelete = 1;
k_mutex_lock(&info_fs_lock, K_FOREVER);
// Check, if next sn would be at start of page
record_sequence_number_t potential_next_sn = sn_increment(get_latest_sequence_number());
storage_id_t potential_next_id = convert_sn_to_storage_id(potential_next_sn);
if (((potential_next_id * ens_fs.entry_size) % ens_fs.sector_size) == 0) {
// If we are at start of a page, we need to erase it first
ens_fs_page_erase(&ens_fs, potential_next_id, 1);
ens_fs_page_erase(&ens_fs, potential_next_id, sectorsToDelete);
// if our storage is full, we need to adjust our information about stored records
if (get_num_records() == MAX_CONTACTS) {
int deletedRecordsCount = (ens_fs.sector_size / ens_fs.entry_size) * sectorsToDelete;
record_information.count -= deletedRecordsCount;
record_information.oldest_contact =
GET_MASKED_SN((record_information.oldest_contact + deletedRecordsCount));
save_storage_information();
}
}
// Actually increment sn
@ -140,6 +153,7 @@ int add_record(record_t* src) {
src->sn = curr_sn;
storage_id_t id = convert_sn_to_storage_id(curr_sn);
k_mutex_unlock(&info_fs_lock);
return ens_fs_write(&ens_fs, id, src);
}
@ -148,9 +162,7 @@ int delete_record(record_sequence_number_t sn) {
int rc = ens_fs_delete(&ens_fs, id);
if (!rc) {
k_mutex_lock(&info_fs_lock, K_FOREVER);
if (sn_equal(sn, get_latest_sequence_number())) {
record_information.count--;
} else if (sn_equal(sn, get_oldest_sequence_number())) {
if (sn_equal(sn, get_oldest_sequence_number())) {
record_information.oldest_contact = sn_increment(record_information.oldest_contact);
record_information.count--;
}

1
src/ens/storage.h
View File

@ -63,7 +63,6 @@ record_sequence_number_t get_latest_sequence_number();
record_sequence_number_t get_oldest_sequence_number();
/**
* TODO: How to handle if none is available?
* @return The amount of contacts, usually get_latest_sequence_number() - get_oldest_sequence_number()
*/
uint32_t get_num_records();