Re: [PATCH] tools/nolibc: add support for clock_nanosleep() and nanosleep()

Hi Thomas,

On Fri, Jul 04, 2025 at 04:19:48PM +0200, Thomas Weißschuh wrote:

+static __attribute__((unused)) +int sys_clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,

• 	struct timespec *rmtp)
  

+{ +#if defined(__NR_clock_nanosleep)

• return my_syscall4(__NR_clock_nanosleep, clockid, flags, rqtp, rmtp);

+#elif defined(__NR_clock_nanosleep_time64)

• struct __kernel_timespec krqtp, krmtp;
• int ret;
• __nolibc_timespec_user_to_kernel(rqtp, &krqtp);
• ret = my_syscall4(__NR_clock_nanosleep_time64, clockid, flags, &krqtp, &krmtp);
• if (rmtp)

• __nolibc_timespec_kernel_to_user(&krmtp, rmtp);
  

• return ret;

+#else

• return __nolibc_enosys(__func__, clockid, flags, rqtp, rmtp);

+#endif

I don't know which archs do not have clock_nanosleep, but if it becomes needed on some of them, we could probably fall back to pslelect() if available, of course, and ignore the clockid.

Acked-by: Willy Tarreau w@1wt.eu

Cheers, Willy