New op­por­tun­it­ies in the linuxu­lat­or

Last week­end I com­mit­ted some dummy-​syscalls to the linuxu­lat­or in FreeBSD–cur­rent. I also ad­ded some com­ments to syscalls.master which should give a hint which linux ker­nel had them for the first time (if the linux man-​page I looked this up in is cor­rect). So if someone wants to ex­per­i­ment with a higher com­pat.linux.osrelease than 2.6.16 (as it is needed for a CentOS based linux_​base), he should now get some ker­nel mes­sages about un­im­ple­men­ted sy­scalls in­stead of a si­lent fail­ure.

There may be some low-​hanging fruits in there, but I did not really veri­fy this by check­ing what the dummy sy­scalls are sup­posed to do in linux and if we can eas­ily map this to ex­ist­ing FreeBSD fea­tures. In case someone has a look, please send an email to emulation@​FreeBSD.​org.