Bug 797332

Created attachment 565697 [details]
Modifications to rpm spec to include new patch

Description of problem:

In conjunction with the patch for bug 705952, rpc.idmapd exports the conf API in nfs-utils:support/nfs/conffile.c, which is incompatible with the similar conf API in libnfsidmap:cfg.c.  For one thing the members of struct conf_trans are not aligned similarly.

This incompatibility predates Fedora 16 but doesn't seem to have been exposed until now.  I'm not sure if it's due to a glibc or binutils change.  But now, the dynamically loadable modules in libnfsidmap are reading a corrupted conf data structure (e.g. it sees the "value" data in the "tag" variable) and consequently rpc.idmapd crashes after the umich_ldap.so module is loaded.   Of course, to see this you have to apply the patch in 705952 or the ldap functionality is completely stubbed out.

Version-Release number of selected component (if applicable):

libnfsidmap-0.24-7.fc16
nfs-utils-1.2.5-3.fc16

How reproducible:

always

Steps to Reproduce:
1. Apply patch 705952 to libnfsidmap library
2. Configure /etc/idmapd.conf to use an ldap server for id mapping
3. run /usr/sbin/rpc.idmapd.

Actual results:

Crashola


Expected results:


A working nfs4 idmapper.


Additional info:

The attach patch limits the visibility of the symbols in the nfs-utils
conffile.c so that they are only visible to programs linked directly to
it.  This forces the objects dynamically loaded via libnfsidmap to use the
functions defined in that shared library instead.