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Merge pull request #806 from oltaco/safer-lfs-traverse

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Safer _countLfsBlock / _getLfsUsedBlockCount
This commit is contained in:
ripplebiz
2025-09-21 00:00:19 +10:00
committed by GitHub
parent 757ff9fb55 2922b62888
commit 4daad75f7d
1 changed files with 15 additions and 2 deletions
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17
examples/companion_radio/DataStore.cpp
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@@ -42,12 +42,17 @@ static File openWrite(FILESYSTEM* fs, const char* filename) {
#endif
}
#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
static uint32_t _ContactsChannelsTotalBlocks = 0;
#endif
void DataStore::begin() {
#if defined(RP2040_PLATFORM)
identity_store.begin();
#endif
#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
_ContactsChannelsTotalBlocks = _getContactsChannelsFS()->_getFS()->cfg->block_count;
checkAdvBlobFile();
#if defined(EXTRAFS) || defined(QSPIFLASH)
migrateToSecondaryFS();
@@ -74,14 +79,22 @@ void DataStore::begin() {
#if defined(NRF52_PLATFORM) || defined(STM32_PLATFORM)
int _countLfsBlock(void *p, lfs_block_t block){
if (block > _ContactsChannelsTotalBlocks) {
MESH_DEBUG_PRINTLN("ERROR: Block %d exceeds filesystem bounds - CORRUPTION DETECTED!", block);
return LFS_ERR_CORRUPT; // return error to abort lfs_traverse() gracefully
}
lfs_size_t *size = (lfs_size_t*) p;
*size += 1;
return 0;
return 0;
}
lfs_ssize_t _getLfsUsedBlockCount(FILESYSTEM* fs) {
lfs_size_t size = 0;
lfs_traverse(fs->_getFS(), _countLfsBlock, &size);
int err = lfs_traverse(fs->_getFS(), _countLfsBlock, &size);
if (err) {
MESH_DEBUG_PRINTLN("ERROR: lfs_traverse() error: %d", err);
return 0;
}
return size;
}
#endif