Date: Sat, 30 May 2020 19:28:55 -0400 From: Ed Maste <emaste@freebsd.org> To: Konstantin Belousov <kostikbel@gmail.com> Cc: src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>, svn-src-head <svn-src-head@freebsd.org> Subject: Re: svn commit: r361657 - head/sys/sys Message-ID: <CAPyFy2D8%2BUXpS4pxbC26QN62dwTRL3tmpzmb8n2hQk3P1U7f0w@mail.gmail.com> In-Reply-To: <CAPyFy2A8=-%2BQ3kgDbh5sjq1P32gRCmgJQbMwqNoC=0cxwgf2RQ@mail.gmail.com> References: <202005301957.04UJvRkb020021@repo.freebsd.org> <20200530201405.GL48478@kib.kiev.ua> <CAPyFy2A8=-%2BQ3kgDbh5sjq1P32gRCmgJQbMwqNoC=0cxwgf2RQ@mail.gmail.com>
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On Sat, 30 May 2020 at 16:17, Ed Maste <emaste@freebsd.org> wrote: > > On Sat, 30 May 2020 at 16:14, Konstantin Belousov <kostikbel@gmail.com> wrote: > > > > On Sat, May 30, 2020 at 07:57:27PM +0000, Ed Maste wrote: > > > Author: emaste > > > Date: Sat May 30 19:57:26 2020 > > > New Revision: 361657 > > > URL: https://svnweb.freebsd.org/changeset/base/361657 > > > > > > Log: > > > elf_common.h: define DF_1_PIE > > > > > > DF_1_PIE indicates that the object is a position-independent executable. > > Only on Solaris. > > Apparently GNU ld sets it broadly now, and there's a patch to have lld > start doing it: https://reviews.llvm.org/D80872 It looks like GNU ld has done it since 2015 in fact. Further, glibc will refuse to dlopen() an object with DF_1_PIE set, as of last June; this seems like it would be a reasonable thing for us to do too. glibc bug for this: https://sourceware.org/bugzilla/show_bug.cgi?id=24323
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