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Implement support for parsing/interacting with NCAs. (#942)

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* fs: implement support for interacting with ncas.

* spl: extend to use virtual keyslots
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SciresM 2020-05-11 15:04:51 -07:00 • committed by GitHub
parent 3a1ccdd919
commit 81f91803ec
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118 changed files with 13301 additions and 405 deletions
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44
libraries/libstratosphere/source/fssystem/fssystem_sparse_storage.cpp Normal file
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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
namespace ams::fssystem {
Result SparseStorage::Read(s64 offset, void *buffer, size_t size) {
/* Validate preconditions. */
AMS_ASSERT(offset >= 0);
AMS_ASSERT(this->IsInitialized());
/* Allow zero size. */
R_SUCCEED_IF(size == 0);
/* Validate arguments. */
R_UNLESS(buffer != nullptr, fs::ResultNullptrArgument());
if (this->GetEntryTable().IsEmpty()) {
R_UNLESS(this->GetEntryTable().Includes(offset, size), fs::ResultOutOfRange());
std::memset(buffer, 0, size);
} else {
R_TRY(this->OperatePerEntry<false>(offset, size, [=](fs::IStorage *storage, s64 data_offset, s64 cur_offset, s64 cur_size) -> Result {
R_TRY(storage->Read(data_offset, reinterpret_cast<u8 *>(buffer) + (cur_offset - offset), static_cast<size_t>(cur_size)));
return ResultSuccess();
}));
}
return ResultSuccess();
}
}