Function read_program_headers

kernel/kernel/ELF.cpp:82–104

		return file_header;
	}

	static BAN::ErrorOr<BAN::Vector<ElfW(Phdr)>> read_program_headers(BAN::RefPtr<Inode> inode, const ElfW(Ehdr)& file_header)
	{
		BAN::Vector<uint8_t> program_header_buffer;
		TRY(program_header_buffer.resize(file_header.e_phnum * file_header.e_phentsize));
		TRY(inode->read(file_header.e_phoff, BAN::ByteSpan(program_header_buffer.span())));

		BAN::Vector<ElfW(Phdr)> program_headers;
		TRY(program_headers.reserve(file_header.e_phnum));

		for (size_t i = 0; i < file_header.e_phnum; i++)
		{
			const auto& pheader = *reinterpret_cast<ElfW(Phdr)*>(program_header_buffer.data() + i * file_header.e_phentsize);
			if (pheader.p_memsz < pheader.p_filesz)
			{
				dprintln("Invalid program header, memsz less than filesz");
				return BAN::Error::from_errno(EINVAL);
			}

			MUST(program_headers.emplace_back(pheader));
		}

		return BAN::move(program_headers);
	}