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List:       linux-man
Subject:    Re: [PATCH v2] ld.so.8: make lack of separator escaping explicit
From:       Mike Frysinger <vapier () gentoo ! org>
Date:       2018-02-06 18:28:27
Message-ID: 20180206182827.GH27582 () vapier
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On 06 Feb 2018 09:46, walter harms wrote:
> Am 05.02.2018 22:48, schrieb Mike Frysinger:
> > Make it clear that the delimiters in LD_PRELOAD, LD_LIBRARY_PATH, and
> > LD_AUDIT cannot be escaped so people don't try various methods (such
> > as \:) to workaround it.
> > 
> > --- a/man8/ld.so.8
> > +++ b/man8/ld.so.8
> > @@ -271,7 +271,8 @@ This is useful when using a debugger.
> >  .B LD_LIBRARY_PATH
> >  A list of directories in which to search for
> >  ELF libraries at execution time.
> > -The items in the list are separated by either colons or semicolons.
> > +The items in the list are separated by either colons or semicolons,
> > +and there is no support for escaping either separator.
> >  Similar to the
> >  .B PATH
> >  environment variable.
> > @@ -310,7 +311,8 @@ as shell variables!)
> >  .B LD_PRELOAD
> >  A list of additional, user-specified, ELF shared
> >  objects to be loaded before all others.
> > -The items of the list can be separated by spaces or colons.
> > +The items of the list can be separated by spaces or colons,
> > +and there is no support for escaping either separator.
> >  This can be used to selectively override functions in other shared objects.
> >  The objects are searched for using the rules given under DESCRIPTION.
> >  .IP
> > @@ -352,7 +354,8 @@ many obsolete or only for internal use.
> >  A colon-separated list of user-specified, ELF shared objects
> >  to be loaded before all others in a separate linker namespace
> >  (i.e., one that does not intrude upon the normal symbol bindings that
> > -would occur in the process).
> > +would occur in the process)
> > +and there is no support for escaping the separator.
> >  These objects can be used to audit the operation of the dynamic linker.
> >  .IP
> >  .B LD_AUDIT
> 
> Everything is alright. NTL i would suggest to make consequences more clear, e.g.:
> 
> "There is \fBno way\rR to have libraryname like libfoo-1:2. In this case ld.so will
>  always search for \fBibfoo-1\fR and \fB2\fR."

could do.  lets see what Michael thinks.
-mike

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