Date: Thu, 27 Feb 2014 16:21:58 GMT From: Ed Maste <emaste@freebsd.org> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/187114: rtld does not expand $ORIGIN unless DF_ORIGIN flag is set Message-ID: <201402271621.s1RGLwIG018775@freefall.freebsd.org> Resent-Message-ID: <201402271630.s1RGU1DW020338@freefall.freebsd.org>
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>Number: 187114 >Category: bin >Synopsis: rtld does not expand $ORIGIN unless DF_ORIGIN flag is set >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Feb 27 16:30:01 UTC 2014 >Closed-Date: >Last-Modified: >Originator: Ed Maste >Release: FreeBSD 11.0-CURRENT amd64 >Organization: FreeBSD >Environment: System: FreeBSD freefall.freebsd.org 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r259961: Fri Dec 27 21:56:39 UTC 2013 peter@freefall.freebsd.org:/usr/obj/usr/src/sys/FREEFALL amd64 >Description: rtld-elf requires the DF_ORIGIN flag to be set, in order to substitute $ORIGIN in rpath. This is not required by Linux's runtime linker, and apparently not by any other system. Based on old SCO documentation of the DF_ORIGIN flag it appears the purpose of the flag is to force early resolution of $ORIGIN for the case of an executable that does not use $ORIGIN in rpath, but later expects to dlopen() a library that does. http://www.sco.com/developers/gabi/2003-12-17/ch5.dynamic.html The GNU ld documentation describes "-z origin" as "Marks the object may contain $ORIGIN," which is not particularly helpful. The GNU gold linker though hints at the interpretation above: "Mark DSO to indicate that needs immediate $ORIGIN processing at runtime." >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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