[Bug nscd/13696] New: Add a --disable-nscd option to configure for disabling nscd implementation in glibc functions

[Bug nscd/13696] New: Add a --disable-nscd option to configure for disabling nscd implementation in glibc functions

[benchan at chromium dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13696

             Bug #: 13696
           Summary: Add a --disable-nscd option to configure for disabling
                    nscd implementation in glibc functions
           Product: glibc
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nscd
        AssignedTo: drepper.fsp@gmail.com
        ReportedBy: benchan@chromium.org
    Classification: Unclassified


Created attachment 6214
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6214
Patch to add --disable-nscd to configure

Background
----------
Although the nscd client code can fall back when it fails to contact the nscd
server, we may sometimes need to avoid that from happening (e.g. we need to
disallow the "socket" system call in a sandboxed environment) if we know that
no nscd server is enabled on a target system. Thus, we need to compile glibc
without using the nscd implementation in its functions. 

Problem
-------
The following glibc Makefiles currently hardcode -DUSE_NSCD=1 to use the nscd
implementation for certain glibc functions, which makes it inconvenient to
disable the nscd implementation.

  grp/Makefile
  inet/Makefile
  posix/Makefile
  pwd/Makefile

Proposed Solution
-----------------
It would be nicer if we have a --disable-nscd option in configure to control
whether USE_NSCD should be defined. The attached patch implements the proposed
changes on top of the current glibc master branch.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug nscd/13696] Add a --disable-nscd option to configure for disabling nscd implementation in glibc functions

[ppluzhnikov at google dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13696

Paul Pluzhnikov <ppluzhnikov at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ppluzhnikov at google dot
                   |                            |com

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug nscd/13696] Add a --disable-nscd option to configure for disabling nscd implementation in glibc functions

[vapier at gentoo dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13696

Mike Frysinger <vapier at gentoo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |toolchain at gentoo dot
                   |                            |org, vapier at gentoo dot
                   |                            |org

--- Comment #1 from Mike Frysinger <vapier at gentoo dot org> 2012-02-17 23:37:18 UTC ---
might want to submit the patch to the libc-alpha mailing list too.  bugzilla
can be a bit slow and has less visibility.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug nscd/13696] Add a --disable-nscd option to configure for disabling nscd implementation in glibc functions

[drepper.fsp at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13696

--- Comment #2 from Ulrich Drepper <drepper.fsp at gmail dot com> 2012-03-07 09:17:42 UTC ---
Once again you want the world to pay for the convenience of Google?  I haven't
heard about anyone else who wants to have this.  Even though some people don't
use nscd for glibc, they use other implementations.  Adding features which are
not generally used just means introducing sources of future problems.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug nscd/13696] Add a --disable-nscd option to configure for disabling nscd implementation in glibc functions

[vapier at gentoo dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13696

--- Comment #3 from Mike Frysinger <vapier at gentoo dot org> 2012-03-07 13:24:54 UTC ---
could you possibly keep the crap out of your comments ?  this anti-google
sentiment really has no business here.

but on to the facts:
 - the feature in question is *already* in the source (this patch doesn't add
the USE_NSCD define)
 - this patch only makes control of the -DUSE_NSCD flag into a configure option
 - there should be no ABI change

the amount of additional "overhead" here is trivial.  i'd also contend the
assertion that google would be the only consumer of this.  plenty of embedded
devices could care less about having a daemon like nscd running.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug nscd/13696] Add a --disable-nscd option to configure for disabling nscd implementation in glibc functions

[roland at gnu dot org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13696

Roland McGrath <roland at gnu dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |roland at gnu dot org
         Resolution|                            |FIXED

--- Comment #4 from Roland McGrath <roland at gnu dot org> 2012-08-22 20:42:14 UTC ---
Done with a different implementation than the one here.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug nscd/13696] Add a --disable-nscd option to configure for disabling nscd implementation in glibc functions

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=13696

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fweimer at redhat dot com
              Flags|                            |security-

-- 
You are receiving this mail because:
You are on the CC list for the bug.