On Friday, September 07, 2012 2:41:20 pm Konstantin Belousov wrote: > > I think these would be rare? There's no good reason for anything to write > > to > > a shared library that I can think of. install(1) does an atomic rename to > > swap > > in the new libraries already. > > After a second thought, I do not like your proposal as well. +x is set for > shebang scripts, and allowing PROT_EXEC to set VV_TEXT for them means > that such scripts are subject for write denial.
Yeah, that's fair. Also, I hunted around to find the description of MAP_TEXT in Solaris 11. It seems from reading that that MAP_TEXT on Solaris isn't used to prevent writes ala VV_TEXT. Instead, it is used as a hint that is apparently used to use superpages for text. -- John Baldwin _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
