Atmosphere/libraries/libmesosphere/source/svc/kern_svc_query_memory.cpp

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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 <mesosphere.hpp>
namespace ams::kern::svc {
/* ============================= Common ============================= */
namespace {
Result QueryProcessMemory(ams::svc::MemoryInfo *out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Handle process_handle, uintptr_t address) {
/* Get the process. */
KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(process_handle);
R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
/* Query the mapping's info. */
KMemoryInfo info;
R_TRY(process->GetPageTable().QueryInfo(std::addressof(info), out_page_info, address));
/* Write output. */
*out_memory_info = info.GetSvcMemoryInfo();
return ResultSuccess();
}
Result QueryMemory(ams::svc::MemoryInfo *out_memory_info, ams::svc::PageInfo *out_page_info, uintptr_t address) {
/* Query memory is just QueryProcessMemory on the current process. */
return QueryProcessMemory(out_memory_info, out_page_info, ams::svc::PseudoHandle::CurrentProcess, address);
}
}
/* ============================= 64 ABI ============================= */
Result QueryMemory64(KUserPointer<ams::svc::lp64::MemoryInfo *> out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Address address) {
/* Get an ams::svc::MemoryInfo for the region. */
ams::svc::MemoryInfo info = {};
R_TRY(QueryMemory(std::addressof(info), out_page_info, address));
/* Try to copy to userspace. In the 64-bit case, ams::svc::lp64::MemoryInfo is the same as ams::svc::MemoryInfo. */
static_assert(sizeof(ams::svc::MemoryInfo) == sizeof(ams::svc::lp64::MemoryInfo));
R_TRY(out_memory_info.CopyFrom(std::addressof(info)));
return ResultSuccess();
}
Result QueryProcessMemory64(KUserPointer<ams::svc::lp64::MemoryInfo *> out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Handle process_handle, uint64_t address) {
MESOSPHERE_PANIC("Stubbed SvcQueryProcessMemory64 was called.");
}
/* ============================= 64From32 ABI ============================= */
Result QueryMemory64From32(KUserPointer<ams::svc::ilp32::MemoryInfo *> out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Address address) {
MESOSPHERE_PANIC("Stubbed SvcQueryMemory64From32 was called.");
}
Result QueryProcessMemory64From32(KUserPointer<ams::svc::ilp32::MemoryInfo *> out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Handle process_handle, uint64_t address) {
MESOSPHERE_PANIC("Stubbed SvcQueryProcessMemory64From32 was called.");
}
}