errcheck: libcontainer

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

libcontainer/standard_init_linux.go

@@ -52,7 +52,7 @@ func (l *linuxStandardInit) Init() error {
 		if err := selinux.SetKeyLabel(l.config.ProcessLabel); err != nil {
 			return err
 		}
-		defer selinux.SetKeyLabel("")
+		defer selinux.SetKeyLabel("") //nolint: errcheck
 		ringname, keepperms, newperms := l.getSessionRingParams()
 
 		// Do not inherit the parent's session keyring.
@@ -151,7 +151,7 @@ func (l *linuxStandardInit) Init() error {
 	if err := selinux.SetExecLabel(l.config.ProcessLabel); err != nil {
 		return errors.Wrap(err, "set process label")
 	}
-	defer selinux.SetExecLabel("")
+	defer selinux.SetExecLabel("") //nolint: errcheck
 	// Without NoNewPrivileges seccomp is a privileged operation, so we need to
 	// do this before dropping capabilities; otherwise do it as late as possible
 	// just before execve so as few syscalls take place after it as possible.
@@ -183,7 +183,7 @@ func (l *linuxStandardInit) Init() error {
 	}
 	// Close the pipe to signal that we have completed our init.
 	logrus.Debugf("init: closing the pipe to signal completion")
-	l.pipe.Close()
+	_ = l.pipe.Close()
 
 	// Close the log pipe fd so the parent's ForwardLogs can exit.
 	if err := unix.Close(l.logFd); err != nil {
@@ -207,7 +207,7 @@ func (l *linuxStandardInit) Init() error {
 	// N.B. the core issue itself (passing dirfds to the host filesystem) has
 	// since been resolved.
 	// https://github.com/torvalds/linux/blob/v4.9/fs/exec.c#L1290-L1318
-	unix.Close(l.fifoFd)
+	_ = unix.Close(l.fifoFd)
 	// Set seccomp as close to execve as possible, so as few syscalls take
 	// place afterward (reducing the amount of syscalls that users need to
 	// enable in their seccomp profiles).