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Log initialization fix

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This commit is contained in:
Pavel Kirienko
2015-05-05 11:31:55 +03:00
parent f11f49a7d2
commit 3af95e3dd4
1 changed files with 16 additions and 10 deletions
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libuavcan/src/protocol/uc_dynamic_node_id_allocation_server.cpp
+16 -10
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@@ -228,10 +228,24 @@ int Log::initEmptyLogStorage()
{
MarshallingStorageDecorator io(storage_);
// Initializing last index
/*
* Writing the zero entry - it must always be default-initialized
*/
entries_[0] = protocol::dynamic_node_id::server::Entry();
int res = writeEntryToStorage(0, entries_[0]);
if (res < 0)
{
return res;
}
/*
* Initializing last index
* Last index must be written AFTER the zero entry, otherwise if the write fails here the storage will be
* left in an inconsistent state.
*/
last_index_ = 0;
uint32_t stored_index = 0;
int res = io.setAndGetBack(getLastIndexKey(), stored_index);
res = io.setAndGetBack(getLastIndexKey(), stored_index);
if (res < 0)
{
return res;
@@ -241,14 +255,6 @@ int Log::initEmptyLogStorage()
return -ErrFailure;
}
// Writing the zero entry - it must always be default-initialized
entries_[0] = protocol::dynamic_node_id::server::Entry();
res = writeEntryToStorage(0, entries_[0]);
if (res < 0)
{
return res;
}
return 0;
}