70 lines
1.2 KiB
Go
70 lines
1.2 KiB
Go
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package main
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import (
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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const (
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PathProcPCI = iota
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PathProcUSB
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)
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func (i *iface) ProcLoc() (err error) {
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spath := strings.Join([]string{i.netpath, "device"}, "/")
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var real string
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if real, err = filepath.EvalSymlinks(spath); err != nil {
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if errors.Is(err, os.ErrNotExist) {
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err = fmt.Errorf("Interface %s isn't a hardware device", i.names[IfNameKern])
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return
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}
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err = fmt.Errorf("Failed to resolve symlink to device: %w", err)
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return
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}
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var devpath string
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var ok bool
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sysdev := strings.Join([]string{SYSFS, "devices/"}, "/")
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if devpath, ok = strings.CutPrefix(real, sysdev); !ok {
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err = fmt.Errorf("Symlink doesn't point to %s\n", sysdev)
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return
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}
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var (
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pci, usb string
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procmode int
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)
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for _, v := range strings.Split(devpath, "/") {
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if strings.HasPrefix(v, "pci") {
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procmode = PathProcPCI
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continue
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} else if strings.HasPrefix(v, "usb") {
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procmode = PathProcUSB
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continue
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}
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switch procmode {
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case PathProcPCI:
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{
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if pci, err = i.ProcPCI(v); err != nil {
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continue
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}
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}
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case PathProcUSB:
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{
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if usb, err = i.ProcUSB(v); err != nil {
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continue
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}
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}
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}
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}
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i.names[IfNameLoc] = strings.Join([]string{i.pfx, pci, usb}, "")
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return
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}
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