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Delete page before incrementing sn

This commit is contained in:
H1ghBre4k3r 2021-04-13 14:29:07 +02:00 committed by Patrick Rathje
parent bf9ad9cbec
commit ca35b6a82c
1 changed files with 11 additions and 6 deletions
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17
src/ens/storage.c
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@ -101,7 +101,7 @@ int init_contact_storage(void) {
// TODO lome: change size to sizeof(contact_struct) // TODO lome: change size to sizeof(contact_struct)
rc = ens_fs_init(&ens_fs, FLASH_AREA_ID(ens_storage), 32); rc = ens_fs_init(&ens_fs, FLASH_AREA_ID(ens_storage), 32);
if(rc) { if (rc) {
printk("Cannot init ens_fs (err %d)\n", rc); printk("Cannot init ens_fs (err %d)\n", rc);
} }
return rc; return rc;
@ -118,14 +118,19 @@ int load_contact(contact_t* dest, record_sequence_number_t sn) {
} }
int add_contact(contact_t* src) { int add_contact(contact_t* src) {
// 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);
}
// Actually increment sn
record_sequence_number_t curr_sn = get_next_sequence_number(); record_sequence_number_t curr_sn = get_next_sequence_number();
storage_id_t id = convert_sn_to_storage_id(curr_sn); storage_id_t id = convert_sn_to_storage_id(curr_sn);
// If we are at start of a page, we need to erase it first
if(!(id * ens_fs.entry_size) % ens_fs.sector_size) {
ens_fs_page_erase(&ens_fs, id, 1);
}
int rc = ens_fs_write(&ens_fs, id, src); int rc = ens_fs_write(&ens_fs, id, src);
if (rc > 0) { if (rc > 0) {
return 0; return 0;