Function WithProcfdFile

libcontainer/utils/utils_unix.go:156–161

WithProcfdFile is a very minimal wrapper around [ProcThreadSelfFd]. The caller is responsible for making sure that the provided file handle is actually safe to operate on. NOTE: THIS FUNCTION IS INTERNAL TO RUNC, DO NOT USE IT. TODO: Migrate the mount logic towards a more move_mount(2)-friendly de

(file *os.File, fn func(procfd string) error)

// where this is kind of /proc/self/... tomfoolery is only done in a fallback
// path for old kernels.
func WithProcfdFile(file *os.File, fn func(procfd string) error) error {
	fdpath, closer := ProcThreadSelfFd(file.Fd())
	defer closer()

	return fn(fdpath)
}

type ProcThreadSelfCloser func()