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Date: Sat, 17 Sep 2016 16:57:09 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: Re: [PATCH] fix clock_nanosleep error case

* Daniel Sabogal <dsabogalcc@...il.com> [2016-09-17 10:36:43 -0400]:
> posix requires that EINVAL be returned if the first parameter specifies
> the cpu-time clock of the calling thread (CLOCK_THREAD_CPUTIME_ID).
> linux returns ENOTSUP instead so we handle this.
> ---
>  src/time/clock_nanosleep.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/src/time/clock_nanosleep.c b/src/time/clock_nanosleep.c
> index ec87b9e..ea510a6 100644
> --- a/src/time/clock_nanosleep.c
> +++ b/src/time/clock_nanosleep.c
> @@ -1,8 +1,10 @@
>  #include <time.h>
> +#include <errno.h>
>  #include "syscall.h"
>  #include "libc.h"
>  
>  int clock_nanosleep(clockid_t clk, int flags, const struct timespec *req, struct timespec *rem)
>  {
> +	if (clk == CLOCK_THREAD_CPUTIME_ID) return EINVAL;
>  	return -__syscall_cp(SYS_clock_nanosleep, clk, flags, req, rem);

you elide a cancellation point here.

i think you should check and remap the return value instead.

>  }
> -- 
> 2.10.0

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