[LTP] [PATCH] lib: tst_kconfig: Add runtime checks

[Andrea Cervesato]

Hi!

> diff --git a/lib/tst_ns_checks.h b/lib/tst_ns_checks.h
> new file mode 100644
> index 000000000..743d3d09d
> --- /dev/null
> +++ b/lib/tst_ns_checks.h
> @@ -0,0 +1,32 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +/*
> + * Copyright (c) 2026 Cyril Hrubis <chrubis@suse.cz>
> + */
> +
> +#include <unistd.h>
> +#include <stdbool.h>
> +
> +static inline bool tst_user_ns_enabled(void)
> +{
> +	return access("/proc/self/ns/user", F_OK) == 0;
> +}
> +
> +static inline bool tst_net_ns_enabled(void)
> +{
> +	return access("/proc/self/ns/net", F_OK) == 0;
> +}
> +
> +static inline bool tst_pid_ns_enabled(void)
> +{
> +	return access("/proc/self/ns/pid", F_OK) == 0;
> +}
> +
> +static inline bool tst_mnt_ns_enabled(void)
> +{
> +	return access("/proc/self/ns/mnt", F_OK) == 0;
> +}
> +
> +static inline bool tst_ipc_ns_enabled(void)
> +{
> +	return access("/proc/self/ns/ipc", F_OK) == 0;
> +}

I know header is used only once in the code, but we are missing header
guards in this file anyway. Otherwise there's a risk to break LTP compiling
if imported twice in the future.

Regards,
--
Andrea Cervesato
SUSE QE Automation Engineer Linux
andrea.cervesato@suse.com