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Kernel+LibELF: Add support for validating and loading ELF64 executables

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This commit is contained in:
Gunnar Beutner 2021-06-28 17:24:08 +02:00 • committed by Andreas Kling
parent e35b060501
commit 158355e0d7
13 changed files with 109 additions and 78 deletions
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22
Kernel/CoreDump.cpp
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@ -73,7 +73,7 @@ RefPtr<FileDescription> CoreDump::create_target_file(const Process& process, con
KResult CoreDump::write_elf_header()
{
Elf32_Ehdr elf_file_header;
ElfW(Ehdr) elf_file_header;
elf_file_header.e_ident[EI_MAG0] = 0x7f;
elf_file_header.e_ident[EI_MAG1] = 'E';
elf_file_header.e_ident[EI_MAG2] = 'L';
@ -93,17 +93,17 @@ KResult CoreDump::write_elf_header()
elf_file_header.e_machine = EM_386;
elf_file_header.e_version = 1;
elf_file_header.e_entry = 0;
elf_file_header.e_phoff = sizeof(Elf32_Ehdr);
elf_file_header.e_phoff = sizeof(ElfW(Ehdr));
elf_file_header.e_shoff = 0;
elf_file_header.e_flags = 0;
elf_file_header.e_ehsize = sizeof(Elf32_Ehdr);
elf_file_header.e_shentsize = sizeof(Elf32_Shdr);
elf_file_header.e_phentsize = sizeof(Elf32_Phdr);
elf_file_header.e_ehsize = sizeof(ElfW(Ehdr));
elf_file_header.e_shentsize = sizeof(ElfW(Shdr));
elf_file_header.e_phentsize = sizeof(ElfW(Phdr));
elf_file_header.e_phnum = m_num_program_headers;
elf_file_header.e_shnum = 0;
elf_file_header.e_shstrndx = SHN_UNDEF;
auto result = m_fd->write(UserOrKernelBuffer::for_kernel_buffer(reinterpret_cast<uint8_t*>(&elf_file_header)), sizeof(Elf32_Ehdr));
auto result = m_fd->write(UserOrKernelBuffer::for_kernel_buffer(reinterpret_cast<uint8_t*>(&elf_file_header)), sizeof(ElfW(Ehdr)));
if (result.is_error())
return result.error();
return KSuccess;
@ -111,9 +111,9 @@ KResult CoreDump::write_elf_header()
KResult CoreDump::write_program_headers(size_t notes_size)
{
size_t offset = sizeof(Elf32_Ehdr) + m_num_program_headers * sizeof(Elf32_Phdr);
size_t offset = sizeof(ElfW(Ehdr)) + m_num_program_headers * sizeof(ElfW(Phdr));
for (auto& region : m_process->space().regions()) {
Elf32_Phdr phdr {};
ElfW(Phdr) phdr {};
phdr.p_type = PT_LOAD;
phdr.p_offset = offset;
@ -132,10 +132,10 @@ KResult CoreDump::write_program_headers(size_t notes_size)
offset += phdr.p_filesz;
[[maybe_unused]] auto rc = m_fd->write(UserOrKernelBuffer::for_kernel_buffer(reinterpret_cast<uint8_t*>(&phdr)), sizeof(Elf32_Phdr));
[[maybe_unused]] auto rc = m_fd->write(UserOrKernelBuffer::for_kernel_buffer(reinterpret_cast<uint8_t*>(&phdr)), sizeof(ElfW(Phdr)));
}
Elf32_Phdr notes_pheader {};
ElfW(Phdr) notes_pheader {};
notes_pheader.p_type = PT_NOTE;
notes_pheader.p_offset = offset;
notes_pheader.p_vaddr = 0;
@ -145,7 +145,7 @@ KResult CoreDump::write_program_headers(size_t notes_size)
notes_pheader.p_align = 0;
notes_pheader.p_flags = 0;
auto result = m_fd->write(UserOrKernelBuffer::for_kernel_buffer(reinterpret_cast<uint8_t*>(&notes_pheader)), sizeof(Elf32_Phdr));
auto result = m_fd->write(UserOrKernelBuffer::for_kernel_buffer(reinterpret_cast<uint8_t*>(&notes_pheader)), sizeof(ElfW(Phdr)));
if (result.is_error())
return result.error();
return KSuccess;