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kern/ldr: add support for --x executables

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This commit is contained in:
Michael Scire
2024-10-09 17:42:02 -07:00
parent dfff4508fa
commit 12f7c95c5d
9 changed files with 54 additions and 40 deletions
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10
stratosphere/loader/source/ldr_process_creation.cpp
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@@ -555,7 +555,7 @@ namespace ams::ldr {
R_SUCCEED();
}
Result LoadAutoLoadModule(os::NativeHandle process_handle, fs::FileHandle file, const NsoHeader *nso_header, uintptr_t nso_address, size_t nso_size) {
Result LoadAutoLoadModule(os::NativeHandle process_handle, fs::FileHandle file, const NsoHeader *nso_header, uintptr_t nso_address, size_t nso_size, bool prevent_code_reads) {
/* Map and read data from file. */
{
/* Map the process memory. */
@@ -594,7 +594,7 @@ namespace ams::ldr {
const size_t ro_size = util::AlignUp(nso_header->ro_size, os::MemoryPageSize);
const size_t rw_size = util::AlignUp(nso_header->rw_size + nso_header->bss_size, os::MemoryPageSize);
if (text_size) {
R_TRY(os::SetProcessMemoryPermission(process_handle, nso_address + nso_header->text_dst_offset, text_size, os::MemoryPermission_ReadExecute));
R_TRY(os::SetProcessMemoryPermission(process_handle, nso_address + nso_header->text_dst_offset, text_size, prevent_code_reads ? os::MemoryPermission_ExecuteOnly : os::MemoryPermission_ReadExecute));
}
if (ro_size) {
R_TRY(os::SetProcessMemoryPermission(process_handle, nso_address + nso_header->ro_dst_offset, ro_size, os::MemoryPermission_ReadOnly));
@@ -606,7 +606,7 @@ namespace ams::ldr {
R_SUCCEED();
}
Result LoadAutoLoadModules(const ProcessInfo *process_info, const NsoHeader *nso_headers, const bool *has_nso, const ArgumentStore::Entry *argument) {
Result LoadAutoLoadModules(const ProcessInfo *process_info, const NsoHeader *nso_headers, const bool *has_nso, const ArgumentStore::Entry *argument, bool prevent_code_reads) {
/* Load each NSO. */
for (size_t i = 0; i < Nso_Count; i++) {
if (has_nso[i]) {
@@ -614,7 +614,7 @@ namespace ams::ldr {
R_TRY(fs::OpenFile(std::addressof(file), GetNsoPath(i), fs::OpenMode_Read));
ON_SCOPE_EXIT { fs::CloseFile(file); };
R_TRY(LoadAutoLoadModule(process_info->process_handle, file, nso_headers + i, process_info->nso_address[i], process_info->nso_size[i]));
R_TRY(LoadAutoLoadModule(process_info->process_handle, file, nso_headers + i, process_info->nso_address[i], process_info->nso_size[i], prevent_code_reads));
}
}
@@ -658,7 +658,7 @@ namespace ams::ldr {
ON_RESULT_FAILURE { svc::CloseHandle(process_handle); };
/* Load all auto load modules. */
R_RETURN(LoadAutoLoadModules(out, nso_headers, has_nso, argument));
R_RETURN(LoadAutoLoadModules(out, nso_headers, has_nso, argument, (meta->npdm->flags & ldr::Npdm::MetaFlag_PreventCodeReads) != 0));
}
}