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Atmosphere/stratosphere/loader/source/ldr_process_creation.cpp

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/*
* Copyright (c) 2018-2019 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 "ldr_capabilities.hpp"
#include "ldr_content_management.hpp"
#include "ldr_ecs.hpp"
#include "ldr_launch_record.hpp"
#include "ldr_meta.hpp"
#include "ldr_patcher.hpp"
#include "ldr_process_creation.hpp"
#include "ldr_ro_manager.hpp"
namespace ams::ldr {
namespace {
/* Convenience defines. */
constexpr size_t SystemResourceSizeMax = 0x1FE00000;
/* Types. */
enum NsoIndex {
Nso_Rtld = 0,
Nso_Main = 1,
Nso_SubSdk0 = 2,
Nso_SubSdk1 = 3,
Nso_SubSdk2 = 4,
Nso_SubSdk3 = 5,
Nso_SubSdk4 = 6,
Nso_SubSdk5 = 7,
Nso_SubSdk6 = 8,
Nso_SubSdk7 = 9,
Nso_SubSdk8 = 10,
Nso_SubSdk9 = 11,
Nso_Sdk = 12,
Nso_Count,
};
constexpr const char *GetNsoName(size_t idx) {
AMS_ASSERT(idx < Nso_Count);
constexpr const char *NsoNames[Nso_Count] = {
"rtld",
"main",
"subsdk0",
"subsdk1",
"subsdk2",
"subsdk3",
"subsdk4",
"subsdk5",
"subsdk6",
"subsdk7",
"subsdk8",
"subsdk9",
"sdk",
};
return NsoNames[idx];
}
struct CreateProcessInfo {
char name[12];
u32 version;
ncm::ProgramId program_id;
u64 code_address;
u32 code_num_pages;
u32 flags;
Handle reslimit;
u32 system_resource_num_pages;
};
static_assert(sizeof(CreateProcessInfo) == 0x30, "CreateProcessInfo definition!");
struct ProcessInfo {
os::ManagedHandle process_handle;
uintptr_t args_address;
size_t args_size;
uintptr_t nso_address[Nso_Count];
size_t nso_size[Nso_Count];
};
/* Global NSO header cache. */
bool g_has_nso[Nso_Count];
NsoHeader g_nso_headers[Nso_Count];
/* Anti-downgrade. */
struct MinimumProgramVersion {
ncm::ProgramId program_id;
u32 version;
};
constexpr u32 MakeSystemVersion(u32 major, u32 minor, u32 micro) {
return (major << 26) | (minor << 20) | (micro << 16);
}
constexpr MinimumProgramVersion g_MinimumProgramVersions810[] = {
{ncm::ProgramId::Settings, 1},
{ncm::ProgramId::Bus, 1},
{ncm::ProgramId::Audio, 1},
{ncm::ProgramId::NvServices, 1},
{ncm::ProgramId::Ns, 1},
{ncm::ProgramId::Ssl, 1},
{ncm::ProgramId::Es, 1},
{ncm::ProgramId::Creport, 1},
{ncm::ProgramId::Ro, 1},
};
constexpr size_t g_MinimumProgramVersionsCount810 = util::size(g_MinimumProgramVersions810);
constexpr MinimumProgramVersion g_MinimumProgramVersions900[] = {
/* All non-Development System Modules. */
{ncm::ProgramId::Usb, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Tma, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Boot2, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Settings, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Bus, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Bluetooth, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Bcat, MakeSystemVersion(9, 0, 0)},
/* {ncm::ProgramId::Dmnt, MakeSystemVersion(9, 0, 0)}, */
{ncm::ProgramId::Friends, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Nifm, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Ptm, MakeSystemVersion(9, 0, 0)},
/* {ncm::ProgramId::Shell, MakeSystemVersion(9, 0, 0)}, */
{ncm::ProgramId::BsdSockets, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Hid, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Audio, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::LogManager, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Wlan, MakeSystemVersion(9, 0, 0)},
/* {ncm::ProgramId::Cs, MakeSystemVersion(9, 0, 0)}, */
{ncm::ProgramId::Ldn, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::NvServices, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Pcv, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Ppc, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::NvnFlinger, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Pcie, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Account, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Ns, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Nfc, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Psc, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::CapSrv, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Am, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Ssl, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Nim, MakeSystemVersion(9, 0, 0)},
/* {ncm::ProgramId::Cec, MakeSystemVersion(9, 0, 0)}, */
/* {ncm::ProgramId::Tspm, MakeSystemVersion(9, 0, 0)}, */
/* {ncm::ProgramId::Spl, MakeSystemVersion(9, 0, 0)}, */
{ncm::ProgramId::Lbl, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Btm, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Erpt, MakeSystemVersion(9, 0, 0)},
/* {ncm::ProgramId::Time, MakeSystemVersion(9, 0, 0)}, */
{ncm::ProgramId::Vi, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Pctl, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Npns, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Eupld, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Glue, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Eclct, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Es, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Fatal, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Grc, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Creport, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Ro, MakeSystemVersion(9, 0, 0)},
/* {ncm::ProgramId::Profiler, MakeSystemVersion(9, 0, 0)}, */
{ncm::ProgramId::Sdb, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Migration, MakeSystemVersion(9, 0, 0)},
/* {ncm::ProgramId::Jit, MakeSystemVersion(9, 0, 0)}, */
{ncm::ProgramId::JpegDec, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::SafeMode, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::Olsc, MakeSystemVersion(9, 0, 0)},
/* {ncm::ProgramId::Dt, MakeSystemVersion(9, 0, 0)}, */
/* {ncm::ProgramId::Nd, MakeSystemVersion(9, 0, 0)}, */
{ncm::ProgramId::Ngct, MakeSystemVersion(9, 0, 0)},
/* All Web Applets. */
{ncm::ProgramId::AppletWeb, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::AppletShop, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::AppletOfflineWeb, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::AppletLoginShare, MakeSystemVersion(9, 0, 0)},
{ncm::ProgramId::AppletWifiWebAuth, MakeSystemVersion(9, 0, 0)},
};
constexpr size_t g_MinimumProgramVersionsCount900 = util::size(g_MinimumProgramVersions900);
Result ValidateProgramVersion(ncm::ProgramId program_id, u32 version) {
R_UNLESS(hos::GetVersion() >= hos::Version_810, ResultSuccess());
#ifdef LDR_VALIDATE_PROCESS_VERSION
const MinimumProgramVersion *entries = nullptr;
size_t num_entries = 0;
switch (hos::GetVersion()) {
case hos::Version_810:
entries = g_MinimumProgramVersions810;
num_entries = g_MinimumProgramVersionsCount810;
break;
case hos::Version_900:
entries = g_MinimumProgramVersions900;
num_entries = g_MinimumProgramVersionsCount900;
break;
default:
entries = nullptr;
num_entries = 0;
break;
}
for (size_t i = 0; i < num_entries; i++) {
if (entries[i].program_id == program_id) {
R_UNLESS(entries[i].version <= version, ResultInvalidVersion());
}
}
#endif
return ResultSuccess();
}
/* Helpers. */
Result GetProgramInfoFromMeta(ProgramInfo *out, const Meta *meta) {
/* Copy basic info. */
out->main_thread_priority = meta->npdm->main_thread_priority;
out->default_cpu_id = meta->npdm->default_cpu_id;
out->main_thread_stack_size = meta->npdm->main_thread_stack_size;
out->program_id = meta->aci->program_id;
/* Copy access controls. */
size_t offset = 0;
#define COPY_ACCESS_CONTROL(source, which) \
({ \
const size_t size = meta->source->which##_size; \
R_UNLESS(offset + size <= sizeof(out->ac_buffer), ResultInternalError()); \
out->source##_##which##_size = size; \
std::memcpy(out->ac_buffer + offset, meta->source##_##which, size); \
offset += size; \
})
/* Copy all access controls to buffer. */
COPY_ACCESS_CONTROL(acid, sac);
COPY_ACCESS_CONTROL(aci, sac);
COPY_ACCESS_CONTROL(acid, fac);
COPY_ACCESS_CONTROL(aci, fah);
#undef COPY_ACCESS_CONTROL
/* Copy flags. */
out->flags = caps::GetProgramInfoFlags(meta->acid_kac, meta->acid->kac_size);
return ResultSuccess();
}
bool IsApplet(const Meta *meta) {
return (caps::GetProgramInfoFlags(meta->aci_kac, meta->aci->kac_size) & ProgramInfoFlag_ApplicationTypeMask) == ProgramInfoFlag_Applet;
}
bool IsApplication(const Meta *meta) {
return (caps::GetProgramInfoFlags(meta->aci_kac, meta->aci->kac_size) & ProgramInfoFlag_ApplicationTypeMask) == ProgramInfoFlag_Application;
}
Npdm::AddressSpaceType GetAddressSpaceType(const Meta *meta) {
return static_cast<Npdm::AddressSpaceType>((meta->npdm->flags & Npdm::MetaFlag_AddressSpaceTypeMask) >> Npdm::MetaFlag_AddressSpaceTypeShift);
}
Acid::PoolPartition GetPoolPartition(const Meta *meta) {
return static_cast<Acid::PoolPartition>((meta->acid->flags & Acid::AcidFlag_PoolPartitionMask) >> Acid::AcidFlag_PoolPartitionShift);
}
Result LoadNsoHeaders(ncm::ProgramId program_id, const cfg::OverrideStatus &override_status, NsoHeader *nso_headers, bool *has_nso) {
/* Clear NSOs. */
std::memset(nso_headers, 0, sizeof(*nso_headers) * Nso_Count);
std::memset(has_nso, 0, sizeof(*has_nso) * Nso_Count);
for (size_t i = 0; i < Nso_Count; i++) {
FILE *f = nullptr;
if (R_SUCCEEDED(OpenCodeFile(f, program_id, override_status, GetNsoName(i)))) {
ON_SCOPE_EXIT { fclose(f); };
/* Read NSO header. */
R_UNLESS(fread(nso_headers + i, sizeof(*nso_headers), 1, f) == 1, ResultInvalidNso());
has_nso[i] = true;
}
}
return ResultSuccess();
}
Result ValidateNsoHeaders(const NsoHeader *nso_headers, const bool *has_nso) {
/* We must always have a main. */
R_UNLESS(has_nso[Nso_Main], ResultInvalidNso());
/* If we don't have an RTLD, we must only have a main. */
if (!has_nso[Nso_Rtld]) {
for (size_t i = Nso_Main + 1; i < Nso_Count; i++) {
R_UNLESS(!has_nso[i], ResultInvalidNso());
}
}
/* All NSOs must have zero text offset. */
for (size_t i = 0; i < Nso_Count; i++) {
R_UNLESS(nso_headers[i].text_dst_offset == 0, ResultInvalidNso());
}
return ResultSuccess();
}
Result ValidateMeta(const Meta *meta, const ncm::ProgramLocation &loc) {
/* Validate version. */
R_TRY(ValidateProgramVersion(loc.program_id, meta->npdm->version));
/* Validate program id. */
R_UNLESS(meta->aci->program_id >= meta->acid->program_id_min, ResultInvalidProgramId());
R_UNLESS(meta->aci->program_id <= meta->acid->program_id_max, ResultInvalidProgramId());
/* Validate the kernel capabilities. */
R_TRY(caps::ValidateCapabilities(meta->acid_kac, meta->acid->kac_size, meta->aci_kac, meta->aci->kac_size));
/* All good. */
return ResultSuccess();
}
Result GetCreateProcessFlags(u32 *out, const Meta *meta, const u32 ldr_flags) {
const u8 meta_flags = meta->npdm->flags;
u32 flags = 0;
/* Set Is64Bit. */
if (meta_flags & Npdm::MetaFlag_Is64Bit) {
flags |= svc::CreateProcessFlag_Is64Bit;
}
/* Set AddressSpaceType. */
switch (GetAddressSpaceType(meta)) {
case Npdm::AddressSpaceType_32Bit:
flags |= svc::CreateProcessFlag_AddressSpace32Bit;
break;
case Npdm::AddressSpaceType_64BitDeprecated:
flags |= svc::CreateProcessFlag_AddressSpace64BitDeprecated;
break;
case Npdm::AddressSpaceType_32BitWithoutAlias:
flags |= svc::CreateProcessFlag_AddressSpace32BitWithoutAlias;
break;
case Npdm::AddressSpaceType_64Bit:
flags |= svc::CreateProcessFlag_AddressSpace64Bit;
break;
default:
return ResultInvalidMeta();
}
/* Set Enable Debug. */
if (ldr_flags & CreateProcessFlag_EnableDebug) {
flags |= svc::CreateProcessFlag_EnableDebug;
}
/* Set Enable ASLR. */
if (!(ldr_flags & CreateProcessFlag_DisableAslr)) {
flags |= svc::CreateProcessFlag_EnableAslr;
}
/* Set Is Application. */
if (IsApplication(meta)) {
flags |= svc::CreateProcessFlag_IsApplication;
/* 7.0.0+: Set OptimizeMemoryAllocation if relevant. */
if (hos::GetVersion() >= hos::Version_700) {
if (meta_flags & Npdm::MetaFlag_OptimizeMemoryAllocation) {
flags |= svc::CreateProcessFlag_OptimizeMemoryAllocation;
}
}
}
/* 5.0.0+ Set Pool Partition. */
if (hos::GetVersion() >= hos::Version_500) {
switch (GetPoolPartition(meta)) {
case Acid::PoolPartition_Application:
if (IsApplet(meta)) {
flags |= svc::CreateProcessFlag_PoolPartitionApplet;
} else {
flags |= svc::CreateProcessFlag_PoolPartitionApplication;
}
break;
case Acid::PoolPartition_Applet:
flags |= svc::CreateProcessFlag_PoolPartitionApplet;
break;
case Acid::PoolPartition_System:
flags |= svc::CreateProcessFlag_PoolPartitionSystem;
break;
case Acid::PoolPartition_SystemNonSecure:
flags |= svc::CreateProcessFlag_PoolPartitionSystemNonSecure;
break;
default:
return ResultInvalidMeta();
}
} else if (hos::GetVersion() >= hos::Version_400) {
/* On 4.0.0+, the corresponding bit was simply "UseSecureMemory". */
if (meta->acid->flags & Acid::AcidFlag_DeprecatedUseSecureMemory) {
flags |= svc::CreateProcessFlag_DeprecatedUseSecureMemory;
}
}
*out = flags;
return ResultSuccess();
}
Result GetCreateProcessInfo(CreateProcessInfo *out, const Meta *meta, u32 flags, Handle reslimit_h) {
/* Clear output. */
std::memset(out, 0, sizeof(*out));
/* Set name, version, program id, resource limit handle. */
std::memcpy(out->name, meta->npdm->program_name, sizeof(out->name) - 1);
out->version = meta->npdm->version;
out->program_id = meta->aci->program_id;
out->reslimit = reslimit_h;
/* Set flags. */
R_TRY(GetCreateProcessFlags(&out->flags, meta, flags));
/* 3.0.0+ System Resource Size. */
if (hos::GetVersion() >= hos::Version_300) {
/* Validate size is aligned. */
R_UNLESS(util::IsAligned(meta->npdm->system_resource_size, os::MemoryBlockUnitSize), ResultInvalidSize());
/* Validate system resource usage. */
if (meta->npdm->system_resource_size) {
/* Process must be 64-bit. */
R_UNLESS((out->flags & svc::CreateProcessFlag_AddressSpace64Bit), ResultInvalidMeta());
/* Process must be application or applet. */
R_UNLESS(IsApplication(meta) || IsApplet(meta), ResultInvalidMeta());
/* Size must be less than or equal to max. */
R_UNLESS(meta->npdm->system_resource_size <= SystemResourceSizeMax, ResultInvalidMeta());
}
out->system_resource_num_pages = meta->npdm->system_resource_size >> 12;
}
return ResultSuccess();
}
Result DecideAddressSpaceLayout(ProcessInfo *out, CreateProcessInfo *out_cpi, const NsoHeader *nso_headers, const bool *has_nso, const args::ArgumentInfo *arg_info) {
/* Clear output. */
out->args_address = 0;
out->args_size = 0;
std::memset(out->nso_address, 0, sizeof(out->nso_address));
std::memset(out->nso_size, 0, sizeof(out->nso_size));
size_t total_size = 0;
/* Calculate base offsets. */
for (size_t i = 0; i < Nso_Count; i++) {
if (has_nso[i]) {
out->nso_address[i] = total_size;
const size_t text_end = nso_headers[i].text_dst_offset + nso_headers[i].text_size;
const size_t ro_end = nso_headers[i].ro_dst_offset + nso_headers[i].ro_size;
const size_t rw_end = nso_headers[i].rw_dst_offset + nso_headers[i].rw_size + nso_headers[i].bss_size;
out->nso_size[i] = text_end;
out->nso_size[i] = std::max(out->nso_size[i], ro_end);
out->nso_size[i] = std::max(out->nso_size[i], rw_end);
out->nso_size[i] = (out->nso_size[i] + size_t(0xFFFul)) & ~size_t(0xFFFul);
total_size += out->nso_size[i];
if (arg_info != nullptr && arg_info->args_size && !out->args_size) {
out->args_address = total_size;
out->args_size = 2 * arg_info->args_size + args::ArgumentSizeMax + 2 * sizeof(u32);
out->args_size = (out->args_size + size_t(0xFFFul)) & ~size_t(0xFFFul);
total_size += out->args_size;
}
}
}
/* Calculate ASLR. */
uintptr_t aslr_start = 0;
uintptr_t aslr_size = 0;
if (hos::GetVersion() >= hos::Version_200) {
switch (out_cpi->flags & svc::CreateProcessFlag_AddressSpaceMask) {
case svc::CreateProcessFlag_AddressSpace32Bit:
case svc::CreateProcessFlag_AddressSpace32BitWithoutAlias:
aslr_start = map::AslrBase32Bit;
aslr_size = map::AslrSize32Bit;
break;
case svc::CreateProcessFlag_AddressSpace64BitDeprecated:
aslr_start = map::AslrBase64BitDeprecated;
aslr_size = map::AslrSize64BitDeprecated;
break;
case svc::CreateProcessFlag_AddressSpace64Bit:
aslr_start = map::AslrBase64Bit;
aslr_size = map::AslrSize64Bit;
break;
AMS_UNREACHABLE_DEFAULT_CASE();
}
} else {
/* On 1.0.0, only 2 address space types existed. */
if (out_cpi->flags & svc::CreateProcessFlag_AddressSpace64BitDeprecated) {
aslr_start = map::AslrBase64BitDeprecated;
aslr_size = map::AslrSize64BitDeprecated;
} else {
aslr_start = map::AslrBase32Bit;
aslr_size = map::AslrSize32Bit;
}
}
R_UNLESS(total_size <= aslr_size, svc::ResultOutOfMemory());
/* Set Create Process output. */
uintptr_t aslr_slide = 0;
uintptr_t unused_size = (aslr_size - total_size);
if (out_cpi->flags & svc::CreateProcessFlag_EnableAslr) {
aslr_slide = ams::rnd::GenerateRandomU64(unused_size / os::MemoryBlockUnitSize) * os::MemoryBlockUnitSize;
}
/* Set out. */
aslr_start += aslr_slide;
for (size_t i = 0; i < Nso_Count; i++) {
if (has_nso[i]) {
out->nso_address[i] += aslr_start;
}
}
if (out->args_address) {
out->args_address += aslr_start;
}
out_cpi->code_address = aslr_start;
out_cpi->code_num_pages = total_size >> 12;
return ResultSuccess();
}
Result CreateProcessImpl(ProcessInfo *out, const Meta *meta, const NsoHeader *nso_headers, const bool *has_nso, const args::ArgumentInfo *arg_info, u32 flags, Handle reslimit_h) {
/* Get CreateProcessInfo. */
CreateProcessInfo cpi;
R_TRY(GetCreateProcessInfo(&cpi, meta, flags, reslimit_h));
/* Decide on an NSO layout. */
R_TRY(DecideAddressSpaceLayout(out, &cpi, nso_headers, has_nso, arg_info));
/* Actually create process. const_cast necessary because libnx doesn't declare svcCreateProcess with const u32*. */
return svcCreateProcess(out->process_handle.GetPointer(), &cpi, reinterpret_cast<const u32 *>(meta->aci_kac), meta->aci->kac_size / sizeof(u32));
}
Result LoadNsoSegment(FILE *f, const NsoHeader::SegmentInfo *segment, size_t file_size, const u8 *file_hash, bool is_compressed, bool check_hash, uintptr_t map_base, uintptr_t map_end) {
/* Select read size based on compression. */
if (!is_compressed) {
file_size = segment->size;
}
/* Validate size. */
R_UNLESS(file_size <= segment->size, ResultInvalidNso());
R_UNLESS(segment->size <= std::numeric_limits<s32>::max(), ResultInvalidNso());
/* Load data from file. */
uintptr_t load_address = is_compressed ? map_end - file_size : map_base;
fseek(f, segment->file_offset, SEEK_SET);
R_UNLESS(fread(reinterpret_cast<void *>(load_address), file_size, 1, f) == 1, ResultInvalidNso());
/* Uncompress if necessary. */
if (is_compressed) {
bool decompressed = (util::DecompressLZ4(reinterpret_cast<void *>(map_base), segment->size, reinterpret_cast<const void *>(load_address), file_size) == static_cast<int>(segment->size));
R_UNLESS(decompressed, ResultInvalidNso());
}
/* Check hash if necessary. */
if (check_hash) {
u8 hash[SHA256_HASH_SIZE];
sha256CalculateHash(hash, reinterpret_cast<void *>(map_base), segment->size);
R_UNLESS(std::memcmp(hash, file_hash, sizeof(hash)) == 0, ResultInvalidNso());
}
return ResultSuccess();
}
Result LoadNsoIntoProcessMemory(Handle process_handle, FILE *f, uintptr_t map_address, const NsoHeader *nso_header, uintptr_t nso_address, size_t nso_size) {
/* Map and read data from file. */
{
map::AutoCloseMap mapper(map_address, process_handle, nso_address, nso_size);
R_TRY(mapper.GetResult());
/* Load NSO segments. */
R_TRY(LoadNsoSegment(f, &nso_header->segments[NsoHeader::Segment_Text], nso_header->text_compressed_size, nso_header->text_hash, (nso_header->flags & NsoHeader::Flag_CompressedText) != 0,
(nso_header->flags & NsoHeader::Flag_CheckHashText) != 0, map_address + nso_header->text_dst_offset, map_address + nso_size));
R_TRY(LoadNsoSegment(f, &nso_header->segments[NsoHeader::Segment_Ro], nso_header->ro_compressed_size, nso_header->ro_hash, (nso_header->flags & NsoHeader::Flag_CompressedRo) != 0,
(nso_header->flags & NsoHeader::Flag_CheckHashRo) != 0, map_address + nso_header->ro_dst_offset, map_address + nso_size));
R_TRY(LoadNsoSegment(f, &nso_header->segments[NsoHeader::Segment_Rw], nso_header->rw_compressed_size, nso_header->rw_hash, (nso_header->flags & NsoHeader::Flag_CompressedRw) != 0,
(nso_header->flags & NsoHeader::Flag_CheckHashRw) != 0, map_address + nso_header->rw_dst_offset, map_address + nso_size));
/* Clear unused space to zero. */
const size_t text_end = nso_header->text_dst_offset + nso_header->text_size;
const size_t ro_end = nso_header->ro_dst_offset + nso_header->ro_size;
const size_t rw_end = nso_header->rw_dst_offset + nso_header->rw_size;
std::memset(reinterpret_cast<void *>(map_address), 0, nso_header->text_dst_offset);
std::memset(reinterpret_cast<void *>(map_address + text_end), 0, nso_header->ro_dst_offset - text_end);
std::memset(reinterpret_cast<void *>(map_address + ro_end), 0, nso_header->rw_dst_offset - ro_end);
std::memset(reinterpret_cast<void *>(map_address + rw_end), 0, nso_header->bss_size);
/* Apply IPS patches. */
LocateAndApplyIpsPatchesToModule(nso_header->build_id, map_address, nso_size);
}
/* Set permissions. */
const size_t text_size = (static_cast<size_t>(nso_header->text_size) + size_t(0xFFFul)) & ~size_t(0xFFFul);
const size_t ro_size = (static_cast<size_t>(nso_header->ro_size) + size_t(0xFFFul)) & ~size_t(0xFFFul);
const size_t rw_size = (static_cast<size_t>(nso_header->rw_size + nso_header->bss_size) + size_t(0xFFFul)) & ~size_t(0xFFFul);
if (text_size) {
R_TRY(svcSetProcessMemoryPermission(process_handle, nso_address + nso_header->text_dst_offset, text_size, Perm_Rx));
}
if (ro_size) {
R_TRY(svcSetProcessMemoryPermission(process_handle, nso_address + nso_header->ro_dst_offset, ro_size, Perm_R));
}
if (rw_size) {
R_TRY(svcSetProcessMemoryPermission(process_handle, nso_address + nso_header->rw_dst_offset, rw_size, Perm_Rw));
}
return ResultSuccess();
}
Result LoadNsosIntoProcessMemory(const ProcessInfo *process_info, const ncm::ProgramId program_id, const cfg::OverrideStatus &override_status, const NsoHeader *nso_headers, const bool *has_nso, const args::ArgumentInfo *arg_info) {
const Handle process_handle = process_info->process_handle.Get();
/* Load each NSO. */
for (size_t i = 0; i < Nso_Count; i++) {
if (has_nso[i]) {
FILE *f = nullptr;
R_TRY(OpenCodeFile(f, program_id, override_status, GetNsoName(i)));
ON_SCOPE_EXIT { fclose(f); };
uintptr_t map_address = 0;
R_TRY(map::LocateMappableSpace(&map_address, process_info->nso_size[i]));
R_TRY(LoadNsoIntoProcessMemory(process_handle, f, map_address, nso_headers + i, process_info->nso_address[i], process_info->nso_size[i]));
}
}
/* Load arguments, if present. */
if (arg_info != nullptr) {
/* Write argument data into memory. */
{
uintptr_t map_address = 0;
R_TRY(map::LocateMappableSpace(&map_address, process_info->args_size));
map::AutoCloseMap mapper(map_address, process_handle, process_info->args_address, process_info->args_size);
R_TRY(mapper.GetResult());
ProgramArguments *args = reinterpret_cast<ProgramArguments *>(map_address);
std::memset(args, 0, sizeof(*args));
args->allocated_size = process_info->args_size;
args->arguments_size = arg_info->args_size;
std::memcpy(args->arguments, arg_info->args, arg_info->args_size);
}
/* Set argument region permissions. */
R_TRY(svcSetProcessMemoryPermission(process_handle, process_info->args_address, process_info->args_size, Perm_Rw));
}
return ResultSuccess();
}
}
/* Process Creation API. */
Result CreateProcess(Handle *out, PinId pin_id, const ncm::ProgramLocation &loc, const cfg::OverrideStatus &override_status, const char *path, u32 flags, Handle reslimit_h) {
/* Use global storage for NSOs. */
NsoHeader *nso_headers = g_nso_headers;
bool *has_nso = g_has_nso;
const auto arg_info = args::Get(loc.program_id);
{
/* Mount code. */
ScopedCodeMount mount(loc, override_status);
R_TRY(mount.GetResult());
/* Load meta, possibly from cache. */
Meta meta;
R_TRY(LoadMetaFromCache(&meta, loc.program_id, override_status));
/* Validate meta. */
R_TRY(ValidateMeta(&meta, loc));
/* Load, validate NSOs. */
R_TRY(LoadNsoHeaders(loc.program_id, override_status, nso_headers, has_nso));
R_TRY(ValidateNsoHeaders(nso_headers, has_nso));
/* Actually create process. */
ProcessInfo info;
R_TRY(CreateProcessImpl(&info, &meta, nso_headers, has_nso, arg_info, flags, reslimit_h));
/* Load NSOs into process memory. */
R_TRY(LoadNsosIntoProcessMemory(&info, loc.program_id, override_status, nso_headers, has_nso, arg_info));
/* Register NSOs with ro manager. */
{
/* Nintendo doesn't validate this get, but we do. */
os::ProcessId process_id = os::GetProcessId(info.process_handle.Get());
/* Register new process. */
ldr::ro::RegisterProcess(pin_id, process_id, loc.program_id);
/* Register all NSOs. */
for (size_t i = 0; i < Nso_Count; i++) {
if (has_nso[i]) {
ldr::ro::RegisterModule(pin_id, nso_headers[i].build_id, info.nso_address[i], info.nso_size[i]);
}
}
}
/* If we're overriding for HBL, perform HTML document redirection. */
if (mount.IsHblMounted()) {
/* Don't validate result, failure is okay. */
RedirectHtmlDocumentPathForHbl(loc);
}
/* Clear the ECS entry for the program. */
R_ASSERT(ecs::Clear(loc.program_id));
/* Note that we've created the program. */
SetLaunchedProgram(loc.program_id);
/* Move the process handle to output. */
*out = info.process_handle.Move();
}
return ResultSuccess();
}
Result GetProgramInfo(ProgramInfo *out, cfg::OverrideStatus *out_status, const ncm::ProgramLocation &loc) {
Meta meta;
/* Load Meta. */
{
ScopedCodeMount mount(loc);
R_TRY(mount.GetResult());
R_TRY(LoadMeta(&meta, loc.program_id, mount.GetOverrideStatus()));
if (out_status != nullptr) {
*out_status = mount.GetOverrideStatus();
}
}
return GetProgramInfoFromMeta(out, &meta);
}
}
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