slapi plugin link problem in 2.2.9 (ITS#3098)

[m.d.t.evans@qmul.ac.uk]

Full_Name: Martin Evans
Version: 2.2.9
OS: Linux 2.4.X
URL: 
Submission from: (NULL) (217.42.114.74)


Hi,
 
I'm having some trouble loading the addrdnvalues.c slapi plugin (and my own
plugin which generates the same errors). Slapd fails to initialise the plugin
and shuts down quietly with no error reports...

slapd.conf contains:
 
# slapi plugins
pluginlog /home/martin/pluginlog
plugin preoperation /path/libaddrdnvalues-plugin.so addrdnvalues_preop_init
 
The problem always occurs with the lt_dlopen in slapd/slapi/plugin.c. I've
modified my plugin.c like to generate an error message...
 
        /* load in the module */
        *pLdHandle = lt_dlopen( path );
        if ( *pLdHandle == NULL ) {
+       printf("load2\n");
+       perror(lt_dlerror ());
                return LDAP_LOCAL_ERROR;
        }
 
Linking the example with the link line from the README file. i.e:
 
gcc -shared -I../../../include -Wall -g -o libaddrdnvalues-plugin.so
addrdnvalues.c
 
and running slapd with:
 
LD_LIBRARY_PATH=/path/to/installed/openldap-2.2.9/lib
 
set gives the following slapi_pblock_get error:
 
line 166 (pluginlog /home/martin/pluginlog)
line 168 (plugin preoperation
/home/martin/tasks/openldap/src/openldap-2.2.9/contrib/slapi-plugins/addrdnvalues/libaddrdnvalues-plugin.so
addrdnvalues_preop_init)
load2
/home/martin/tasks/openldap/src/openldap-2.2.9/contrib/slapi-plugins/addrdnvalues/libaddrdnvalues-plugin.so:
undefined symbol: slapi_pblock_get: No such file or directory
/home/martin/tasks/openldap/installed/openldap-2.2.9/etc/openldap/slapd-provider.conf:
line 168: SLAPI config read failed.
slapd shutdown: freeing system resources.
slapd stopped.
connections_destroy: nothing to destroy.
 
Linking in libslapi like so:
 
$ gcc -shared -I../../../include -Wall -g -o libaddrdnvalues-plugin.so
addrdnvalues.c -L /path/to/installed/openldap-2.2.9/lib/ -lslapi
 
Running slapd with d-1 gives:
 
line 166 (pluginlog /home/martin/pluginlog)
line 167 (plugin preoperation /home/martin/cvs/slapi.precvs/unix_preop.so
unix_preop_init)
load2
/home/martin/tasks/openldap/installed/openldap-2.2.9/lib/libslapi-2.2.so.7:
undefined symbol: slap_schema: No such file or directory
/home/martin/tasks/openldap/installed/openldap-2.2.9/etc/openldap/slapd-provider.conf:
line 167: SLAPI config read failed.
slapd shutdown: freeing system resources.
slapd stopped.
connections_destroy: nothing to destroy.
 
Note that there are also a few other minor modifications to config.c and
plugin.c to print an error if the initialisation fails. The following one may be
worth keeping because it tells you that there was at least some sort of problem
with the plugins before shutting down:
 
--- config.c.0  2004-04-19 16:22:59.000000000 +0100
+++ config.c    2004-04-19 16:24:12.000000000 +0100
@@ -2478,6 +2478,14 @@
  
                        if ( slapi_int_read_config( be, fname, lineno, cargc,
cargv )
                                        != LDAP_SUCCESS ) {
+#ifdef NEW_LOGGING
+                       LDAP_LOG( CONFIG, INFO,
+                               "%s: line %d: SLAPI config read failed.\n",
+                               fname, lineno, 0 );
+#else
+                       Debug( LDAP_DEBUG_ANY, "%s: line %d: SLAPI "
+                           "config read failed.\n", fname, lineno, 0 );
+#endif
                                return( 1 );
                        }
                        slapi_plugins_used++;
 

Kind regards,
Martin.