Function handleMapCreateError

map.go:665–734

(attr sys.MapCreateAttr, spec *MapSpec, err error)

}

func handleMapCreateError(attr sys.MapCreateAttr, spec *MapSpec, err error) error {
	if platform.IsWindows {
		if errors.Is(err, unix.EINVAL) && attr.MapFlags != 0 {
			return fmt.Errorf("map create: flags: %w", internal.ErrNotSupportedOnOS)
		}

		return err
	}

	if errors.Is(err, sys.ErrTokenCapabilities) {
		return fmt.Errorf("map create: %w", err)
	}

	if errors.Is(err, unix.EPERM) {
		return fmt.Errorf("map create: %w (MEMLOCK may be too low, consider rlimit.RemoveMemlock)", err)
	}

	if errors.Is(err, unix.EINVAL) {
		if spec.MaxEntries == 0 && !spec.Type.mustHaveZeroMaxEntries() {
			return fmt.Errorf("map create: %w (MaxEntries may be incorrectly set to zero)", err)
		}
		if spec.Type == UnspecifiedMap {
			return fmt.Errorf("map create: cannot use type %s", UnspecifiedMap)
		}
		if spec.Flags&sys.BPF_F_NO_PREALLOC != 0 && !spec.Type.mustHaveNoPrealloc() {
			return fmt.Errorf("map create: %w (BPF_F_NO_PREALLOC flag may be incompatible with map type %s)", err, spec.Type)
		}
		if spec.Flags&sys.BPF_F_NO_PREALLOC == 0 && spec.Type.mustHaveNoPrealloc() {
			return fmt.Errorf("map create: %w (BPF_F_NO_PREALLOC flag may need to be set for map type %s)", err, spec.Type)
		}
	}

	if spec.Type.canStoreMap() {
		if haveFeatErr := haveNestedMaps(); haveFeatErr != nil {
			return fmt.Errorf("map create: %w", haveFeatErr)
		}
	}

	if spec.readOnly() || spec.writeOnly() {
		if haveFeatErr := haveMapMutabilityModifiers(); haveFeatErr != nil {
			return fmt.Errorf("map create: %w", haveFeatErr)
		}
	}
	if spec.Flags&sys.BPF_F_MMAPABLE > 0 {
		if haveFeatErr := haveMmapableMaps(); haveFeatErr != nil {
			return fmt.Errorf("map create: %w", haveFeatErr)
		}
	}
	if spec.Flags&sys.BPF_F_INNER_MAP > 0 {
		if haveFeatErr := haveInnerMaps(); haveFeatErr != nil {
			return fmt.Errorf("map create: %w", haveFeatErr)
		}
	}
	if spec.Flags&sys.BPF_F_NO_PREALLOC > 0 {
		if haveFeatErr := haveNoPreallocMaps(); haveFeatErr != nil {
			return fmt.Errorf("map create: %w", haveFeatErr)
		}
	}