Re: sysconf(_SC_RTSIG_MAX)

[Niclas Rosenvik <nros%netbsd.org@localhost>]

On Mon, 14 Oct 2019 20:40:10 +0000
coypu%sdf.org@localhost wrote:

> Patch attached. Needed this for sudo update.
> 
> Please tell me how I am wrong.
> Thanks.

According to the opengroup docs on sysconf _SC_RTSIG_MAX is to return
the same value as RTSIG_MAX that might be defined in limits.h. 
RTSIG_MAX is defined as "the number of realtime signals reserved for
application use in this implementation" with a value of at least
_POSIX_RTSIG_MAX defined in limits.h. That is the difference between
SIGRTMAX and SIGRTMIN, not SIGRTMAX. RTSIG_MAX is not guaranteed to be
defined but _POSIX_RTSIG_MAX shall be defined to 8 in limits.h.
Make sysconf return SIGRTMAX - SIGRTMIN and define _POSIX_RTSIG_MAX to
8 in limits.h and I think you are correct.

Regards
Niclas Rosenvik