Man pages matching name ssetmask in section 2:

ssetmask.2.en	debian 10 / manpages-dev
ssetmask.2.es	debian 10 / manpages-es
ssetmask.2.ja	debian 10 / manpages-ja-dev
ssetmask.2.pl	debian 10 / manpages-pl-dev
ssetmask.2.en	debian 11 / manpages-dev
ssetmask.2.fr	debian 11 / manpages-fr-dev
ssetmask.2.ja	debian 11 / manpages-ja-dev
ssetmask.2.en	debian 12 / manpages-dev
ssetmask.2.fr	debian 12 / manpages-fr-dev
ssetmask.2.ja	debian 12 / manpages-ja-dev
ssetmask.2.ru	debian 12 / manpages-ru-dev