[Bug dynamic-link/13945] New: RUNPATH behaviour is not transitive

[Bug dynamic-link/13945] New: RUNPATH behaviour is not transitive

[mitya at mageia dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13945

             Bug #: 13945
           Summary: RUNPATH behaviour is not transitive
           Product: glibc
           Version: 2.15
            Status: NEW
          Severity: normal
          Priority: P2
         Component: dynamic-link
        AssignedTo: unassigned@sourceware.org
        ReportedBy: mitya@mageia.org
    Classification: Unclassified


If only DT_RPATH is used, the DSO chain is traced up to the root (normally an
executable), and thus DT_RPATH of the root module is honoured. With DT_RUNPATH,
it is not; see _dl_map_object in elf/dl-load.c.

That's why if DT_RUNPATH is present, indirect DSO loading from a non-standard
path won't work, for example, if using GModule from GLib. (Even if the correct
DT_RPATH is present, it will be overridden and invalidated by DT_RUNPATH.)

GNOME bug #670477 is an example of such situation. In order to make shell
extensions load, we need to make sure that the "--enable-new-dtags" ld flag is
not used.

https://bugzilla.gnome.org/show_bug.cgi?id=670477

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[Bug dynamic-link/13945] RUNPATH behaviour is not transitive

[walters at verbum dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13945

Colin <walters at verbum dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |walters at verbum dot org

--- Comment #1 from Colin <walters at verbum dot org> 2012-04-04 21:38:10 UTC ---
See http://sourceware.org/ml/libc-hacker/2002-11/msg00011.html

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[Bug dynamic-link/13945] RUNPATH behaviour is not transitive

[rsa at us dot ibm.com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13945

Ryan S. Arnold <rsa at us dot ibm.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |roland at gnu dot org, rsa
                   |                            |at us dot ibm.com

--- Comment #2 from Ryan S. Arnold <rsa at us dot ibm.com> 2012-05-22 15:02:16 UTC ---
It's unfortunate that RPATH is supposedly deprecated in favor of DT_RUNPATH. 
And DT_RUNPATH was created to allow LD_LIBRARY_PATH to override the -rpath
setting, and yet setting LD_LIBRARY_PATH is widely vilified.  I guess this
leaves changing ld.so.conf, but that takes root permission.

Roland will you comment please?

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[Bug dynamic-link/13945] RUNPATH behaviour is not transitive

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=13945

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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