Re: [Minios-devel] [UNIKRAFT PATCH v2 2/2] lib/uksysinfo: Implement sysconf check for _SC_NPROCESSORS_ONLN

[Costin Lupu <costin.lup@xxxxxxxxx>]

Reviewed-by: Costin Lupu <costin.lupu@xxxxxxxxx>

On 6/10/19 7:15 PM, Vlad-Andrei BĂDOIU (78692) wrote:
> From: Vlad-Andrei BĂDOIU (78692) <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>
> 
> The sysconf function should return the number of active processors when
> _SC_NPROCESSORS_ONLN is passed. Since we do not have SMP on Unikraft we 
> return 1
> when _SC_NPROCESSORS_ONLN is passed as argument to the function.
> 
> Signed-off-by: Vlad-Andrei Badoiu <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>
> ---
>  lib/uksysinfo/sysinfo.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/lib/uksysinfo/sysinfo.c b/lib/uksysinfo/sysinfo.c
> index 4c133493..3bff4e6f 100644
> --- a/lib/uksysinfo/sysinfo.c
> +++ b/lib/uksysinfo/sysinfo.c
> @@ -34,6 +34,7 @@
>  
>  #include <stddef.h>
>  #include <limits.h>
> +#include <unistd.h>
>  #include <sys/utsname.h>
>  #include <uk/essentials.h>
>  
> @@ -47,8 +48,11 @@ long pathconf(const char *path __unused, int name __unused)
>       return 0;
>  }
>  
> -long sysconf(int name __unused)
> +long sysconf(int name)
>  {
> +     if (name == _SC_NPROCESSORS_ONLN)
> +             return 1;
> +
>       return 0;
>  }
>  
> 

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