diff --git a/libcontainer/apparmor/apparmor.go b/libcontainer/apparmor/apparmor.go index 4b1bf57..c2954fd 100644 --- a/libcontainer/apparmor/apparmor.go +++ b/libcontainer/apparmor/apparmor.go @@ -1,9 +1,12 @@ package apparmor +// #cgo LDFLAGS: -lapparmor +// #include +// #include +import "C" import ( - "fmt" "io/ioutil" - "os" + "unsafe" ) func IsEnabled() bool { @@ -16,13 +19,10 @@ func ApplyProfile(pid int, name string) error { return nil } - f, err := os.OpenFile(fmt.Sprintf("/proc/%d/attr/current", pid), os.O_WRONLY, 0) - if err != nil { - return err - } - defer f.Close() + cName := C.CString(name) + defer C.free(unsafe.Pointer(cName)) - if _, err := fmt.Fprintf(f, "changeprofile %s", name); err != nil { + if _, err := C.aa_change_onexec(cName); err != nil { return err } return nil diff --git a/libcontainer/nsinit/init.go b/libcontainer/nsinit/init.go index a854f13..45ab881 100644 --- a/libcontainer/nsinit/init.go +++ b/libcontainer/nsinit/init.go @@ -59,10 +59,6 @@ func (ns *linuxNs) Init(container *libcontainer.Container, uncleanRootfs, consol return fmt.Errorf("setup mount namespace %s", err) } - if err := apparmor.ApplyProfile(os.Getpid(), container.Context["apparmor_profile"]); err != nil { - return err - } - if err := setupNetwork(container, context); err != nil { return fmt.Errorf("setup networking %s", err) } @@ -73,6 +69,9 @@ func (ns *linuxNs) Init(container *libcontainer.Container, uncleanRootfs, consol return fmt.Errorf("finalize namespace %s", err) } + if err := apparmor.ApplyProfile(os.Getpid(), container.Context["apparmor_profile"]); err != nil { + return err + } return system.Execv(args[0], args[0:], container.Env) }