wireguard-openbsd/lib/libpthread/man/pthread_attr_setstackaddr.3, branch jd/queueboosts WireGuard implementation for the OpenBSD kernel https://git.zx2c4.com/wireguard-openbsd/atom/lib/libpthread/man/pthread_attr_setstackaddr.3?h=jd%2Fqueueboosts 2018-04-12T17:13:34Z Implement MAP_STACK option for mmap(). Synchronous faults (pagefault and 2018-04-12T17:13:34Z deraadt deraadt@openbsd.org 2018-04-12T17:13:34Z urn:sha1:003f5e42bbc90263e30dbce6eb150fc5e31b56eb syscall) confirm the stack register points at MAP_STACK memory, otherwise SIGSEGV is delivered. sigaltstack() and pthread_attr_setstack() are modified to create a MAP_STACK sub-region which satisfies alignment requirements. Observe that MAP_STACK can only be set/cleared by mmap(), which zeroes the contents of the region -- there is no mprotect() equivalent operation, so there is no MAP_STACK-adding gadget. This opportunistic software-emulation of a stack protection bit makes stack-pivot operations during ROPchain fragile (kind of like removing a tool from the toolbox). original discussion with tedu, uvm work by stefan, testing by mortimer ok kettenis use fancy .In macro for includes. from Jan Klemkow. ok jmc schwarze 2013-06-05T03:40:26Z tedu tedu@openbsd.org 2013-06-05T03:40:26Z urn:sha1:86f9d4cdda0e0267dccd8755ac0035525579c4a7 Add pthread_attr_[sg]etguardsize() to match rthread, including manpages 2008-12-18T09:30:32Z guenther guenther@openbsd.org 2008-12-18T09:30:32Z urn:sha1:91063d07156452ee17c2de7976871bc6f138c85a Bump lib minor ok otto@ kurt@ marc@; doc review by jmc@ Add manpage for pthread_attr_[sg]etstack(3) 2008-07-05T08:03:57Z guenther guenther@openbsd.org 2008-07-05T08:03:57Z urn:sha1:11ddadc0fe5e5612f4e632d77c9b84e8b35dba4d Correct misnaming in STANDARDS section ok brad@ otto@ convert to new .Dd format; 2007-05-31T19:19:00Z jmc jmc@openbsd.org 2007-05-31T19:19:00Z urn:sha1:9490d37cb6a2f9c8feb8d4b7f9c43b2ac41784aa Add missing const for function parameters to match POSIX. 2004-02-16T22:48:40Z brad brad@openbsd.org 2004-02-16T22:48:40Z urn:sha1:6ae9c70256b071ed7111c316dbd79c1b3e414c34 From: FreeBSD's libc_r ok marc@ RETURN VALUE -> RETURN VALUES in .Sh, as per mdoc template. 2003-05-08T09:01:15Z jmc jmc@openbsd.org 2003-05-08T09:01:15Z urn:sha1:ba0a4b2fbc864f93611d1df8151a4fc4effb1077 also new sentence, new line. copyrights added; 2003-02-20T18:59:12Z jmc jmc@openbsd.org 2003-02-20T18:59:12Z urn:sha1:084a1742edbdaa4f3cec41bf0d0370d80baad9c5 these are all David Leonard, and Public Domain ok deraadt@ o) start new sentence on a new line; 2002-05-01T08:03:29Z mpech mpech@openbsd.org 2002-05-01T08:03:29Z urn:sha1:ee997aea819580341aee10df113db886cac4a60f o) always close .Bl tags; o) fix usage of .Xr; millert@ ok Mostly punctuation fixes. 2000-04-15T02:15:09Z aaron aaron@openbsd.org 2000-04-15T02:15:09Z urn:sha1:f885a5274d3b804af634a3a47ca4a09d1818545f