func()

in cmd/seccomp-profiler/disasm/disasm.go [70:121]

• 41 lines of code
• 8 McCabe index (conditional complexity)

func (p *parser) Parse(objDump string) ([]Syscall, error) {
	f, err := os.Open(objDump)
	if err != nil {
		return nil, fmt.Errorf("failed to read objdump file: %v", err)
	}
	defer f.Close()

	var function string
	var instructions []string
	var syscalls []Syscall

	s := bufio.NewScanner(bufio.NewReader(f))
	for s.Scan() {
		line := s.Text()
		instructions = append(instructions, line)

		// Find the start of a function.
		if strings.HasPrefix(line, functionMarker) {
			function = line[5:]
			instructions = instructions[:0]
			continue
		}

		syscall, err := p.parse(p, line, function, instructions)
		if err != nil {
			fmt.Fprintf(os.Stderr, "WARN: %v\n", err)
			continue
		}
		if syscall == nil {
			// Line was not a syscall.
			continue
		}

		// Found a syscall. Clear the instruction stack.
		instructions = instructions[:0]

		name, found := p.SyscallNumbers[syscall.Num]
		if !found {
			fmt.Fprintf(os.Stderr, "WARN: unknown syscall %d found at %+v\n", syscall.Num, syscall)
			continue
		}
		syscall.Caller = function
		syscall.Name = name
		syscalls = append(syscalls, *syscall)
	}

	if s.Err() != nil {
		return nil, err
	}

	return syscalls, nil
}