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Atmosphere/libraries/libstratosphere/source/fs/fs_signed_system_partition.cpp
2020-04-13 22:19:44 -07:00

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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>
#include "fsa/fs_filesystem_accessor.hpp"
#include "fsa/fs_mount_utils.hpp"
namespace ams::fs {
bool IsSignedSystemPartitionOnSdCardValid(const char *system_root_path) {
/* Get the accessor for the system filesystem. */
impl::FileSystemAccessor *accessor;
const char *sub_path;
R_ABORT_UNLESS(impl::FindFileSystem(std::addressof(accessor), std::addressof(sub_path), system_root_path));
char is_valid;
R_TRY_CATCH(accessor->QueryEntry(std::addressof(is_valid), 1, nullptr, 0, fsa::QueryId::IsSignedSystemPartitionOnSdCardValid, "/")) {
/* If querying isn't supported, then the partition isn't valid. */
R_CATCH(fs::ResultUnsupportedOperation) { is_valid = false; }
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
return is_valid;
}
bool IsSignedSystemPartitionOnSdCardValidDeprecated() {
/* Ensure we only call with correct version. */
auto version = hos::GetVersion();
AMS_ABORT_UNLESS(hos::Version_4_0_0 <= version && version < hos::Version_8_0_0);
/* Check that the partition is valid. */
bool is_valid;
R_ABORT_UNLESS(fsIsSignedSystemPartitionOnSdCardValid(std::addressof(is_valid)));
return is_valid;
}
}