elfinfo.py 文件源码

def strip(self, stripped_filename):
        with mmapper(self.filename) as mapped:
            fd, file = mapped
            ehdr = self.elf.Ehdr.read(file)

            stripped_ehdr = ehdr._replace(e_shoff=0, e_shnum=0, e_shstrndx=0)
            stripped_size = max(phdr.p_offset + phdr.p_filesz
                                for phdr in gen_phdrs(file, self.elf, ehdr)
                                if phdr.p_type == PT_LOAD)
            assert ehdr.e_phoff + (ehdr.e_phnum *
                                   ehdr.e_phentsize) <= stripped_size

            # Create the new file with the same mode as the original.
            with os.fdopen(os.open(stripped_filename,
                                   os.O_WRONLY | os.O_CREAT | os.O_TRUNC,
                                   os.fstat(fd).st_mode & 0777),
                           'wb') as stripped_file:
                stripped_file.write(self.elf.Ehdr.pack(stripped_ehdr))
                stripped_file.write(file[self.elf.Ehdr.size:stripped_size])