Function parseProcMap

proc_maps.go:139–185

parseProcMap will attempt to parse a single line within a proc/[pid]/maps buffer.

(text string)

// parseProcMap will attempt to parse a single line within a proc/[pid]/maps
// buffer.
func parseProcMap(text string) (*ProcMap, error) {
	fields := strings.Fields(text)
	if len(fields) < 5 {
		return nil, fmt.Errorf("%w: truncated procmap entry", ErrFileParse)
	}

	saddr, eaddr, err := parseAddresses(fields[0])
	if err != nil {
		return nil, err
	}

	perms, err := parsePermissions(fields[1])
	if err != nil {
		return nil, err
	}

	offset, err := strconv.ParseInt(fields[2], 16, 0)
	if err != nil {
		return nil, err
	}

	device, err := parseDevice(fields[3])
	if err != nil {
		return nil, err
	}

	inode, err := strconv.ParseUint(fields[4], 10, 0)
	if err != nil {
		return nil, err
	}

	pathname := ""

	if len(fields) >= 5 {
		pathname = strings.Join(fields[5:], " ")
	}

	return &ProcMap{
		StartAddr: saddr,
		EndAddr:   eaddr,
		Perms:     perms,
		Offset:    offset,
		Dev:       device,
		Inode:     inode,
		Pathname:  pathname,
	}, nil
}

// ProcMaps reads from /proc/[pid]/maps to get the memory-mappings of the
// process.