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Fixes #113

Signed-off-by: Marcos Lilljedahl <marcosnils@gmail.com>

vendor/src/github.com/opencontainers/runc/libcontainer/capabilities_linux.go

@@ -1,69 +0,0 @@
-// +build linux
-
-package libcontainer
-
-import (
-	"fmt"
-	"os"
-	"strings"
-
-	"github.com/syndtr/gocapability/capability"
-)
-
-const allCapabilityTypes = capability.CAPS | capability.BOUNDS
-
-var capabilityMap map[string]capability.Cap
-
-func init() {
-	capabilityMap = make(map[string]capability.Cap)
-	last := capability.CAP_LAST_CAP
-	// workaround for RHEL6 which has no /proc/sys/kernel/cap_last_cap
-	if last == capability.Cap(63) {
-		last = capability.CAP_BLOCK_SUSPEND
-	}
-	for _, cap := range capability.List() {
-		if cap > last {
-			continue
-		}
-		capKey := fmt.Sprintf("CAP_%s", strings.ToUpper(cap.String()))
-		capabilityMap[capKey] = cap
-	}
-}
-
-func newCapWhitelist(caps []string) (*whitelist, error) {
-	l := []capability.Cap{}
-	for _, c := range caps {
-		v, ok := capabilityMap[c]
-		if !ok {
-			return nil, fmt.Errorf("unknown capability %q", c)
-		}
-		l = append(l, v)
-	}
-	pid, err := capability.NewPid(os.Getpid())
-	if err != nil {
-		return nil, err
-	}
-	return &whitelist{
-		keep: l,
-		pid:  pid,
-	}, nil
-}
-
-type whitelist struct {
-	pid  capability.Capabilities
-	keep []capability.Cap
-}
-
-// dropBoundingSet drops the capability bounding set to those specified in the whitelist.
-func (w *whitelist) dropBoundingSet() error {
-	w.pid.Clear(capability.BOUNDS)
-	w.pid.Set(capability.BOUNDS, w.keep...)
-	return w.pid.Apply(capability.BOUNDS)
-}
-
-// drop drops all capabilities for the current process except those specified in the whitelist.
-func (w *whitelist) drop() error {
-	w.pid.Clear(allCapabilityTypes)
-	w.pid.Set(allCapabilityTypes, w.keep...)
-	return w.pid.Apply(allCapabilityTypes)
-}