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fs: more IndirectStorage::OperatePerEntry updates/fixes

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This commit is contained in:
Michael Scire 2020-06-28 02:52:02 -07:00
parent ecbd986529
commit a5447dd72d
1 changed files with 17 additions and 2 deletions
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17
libraries/libstratosphere/include/stratosphere/fssystem/fssystem_indirect_storage_template_impl.hpp
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@ -64,10 +64,25 @@ namespace ams::fssystem {
/* Process a base storage entry. */
if (cr_info.CanDo()) {
/* Ensure that we can process. */
R_UNLESS(cur_entry.storage_index == 0, fs::ResultInvalidIndirectEntryStorageIndex());
/* Get the current data storage's size. */
s64 cur_data_storage_size;
R_TRY(this->data_storage[0].GetSize(std::addressof(cur_data_storage_size)));
/* Ensure that we remain within range. */
const auto data_offset = cur_offset - cur_entry_offset;
R_TRY(func(std::addressof(this->data_storage[0]), cur_entry.GetPhysicalOffset() + data_offset, cur_offset, static_cast<s64>(cr_info.GetReadSize())));
const auto cur_entry_phys_offset = cur_entry.GetPhysicalOffset();
const auto cur_size = static_cast<s64>(cr_info.GetReadSize());
R_UNLESS(0 <= cur_entry_phys_offset && cur_entry_phys_offset <= cur_data_storage_size, fs::ResultInvalidIndirectEntryOffset());
R_UNLESS(cur_entry_phys_offset + data_offset + cur_size <= cur_data_storage_size, fs::ResultInvalidIndirectStorageSize());
/* Operate. */
R_TRY(func(std::addressof(this->data_storage[0]), cur_entry_phys_offset + data_offset, cur_offset, cur_size));
/* Mark as done. */
cr_info.Done();
}
}