Locks were not always released, in particular if something went wrong.
Fixed in slurpd and the slapd main dir.  Slapd clients were not examined.
It also "felt right" to swap the order of closing dfp and rfp in slurpd
copy_replog(), so the last acquired lock is unlocked first.

servers/slapd/lock.c

@@ -43,6 +43,8 @@ lock_fopen( char *fname, char *type, FILE **lfp )
 #else
 		lockf( fileno( *lfp ), F_ULOCK, 0 );
 #endif
+		fclose( *lfp );
+		*lfp = NULL;
 		return( NULL );
 	}
 

servers/slurpd/fm.c

@@ -210,8 +210,7 @@ populate_queue(
 	Debug( LDAP_DEBUG_ANY,
 		"error: can't seek to offset %ld in file \"%s\"\n",
 		sglob->srpos, f, 0 );
-	return;
-    }
+    } else {
     while (( p = get_record( fp )) != NULL ) {
 	if ( sglob->rq->rq_add( sglob->rq, p ) < 0 ) {
 	    char *t;
@@ -227,6 +226,7 @@ populate_queue(
 	pthread_yield();
     }
     sglob->srpos = ftell( fp );
+    }
     (void) relinquish_lock( f, fp, lfp );
 }
     

servers/slurpd/lock.c

@@ -68,6 +68,8 @@ lock_fopen(
 #else
 		lockf( fileno( *lfp ), F_ULOCK, 0 );
 #endif
+		fclose( *lfp );
+		*lfp = NULL;
 		return( NULL );
 	}
 

servers/slurpd/replog.c

@@ -117,7 +117,7 @@ copy_replog(
 	Debug( LDAP_DEBUG_ANY,
 		"Error: copy_replog: Can't lock replog \"%s\" for write: %s\n",
 		src, sys_errlist[ errno ], 0 );
-	lock_fclose( rfp );
+	lock_fclose( rfp, lfp );
 	return( 1 );
     }
 
@@ -133,12 +133,12 @@ copy_replog(
 	truncate( src, (off_t) 0 );
     }
 
-    if ( lock_fclose( rfp, lfp ) == EOF ) {
+    if ( lock_fclose( dfp, dlfp ) == EOF ) {
 	Debug( LDAP_DEBUG_ANY,
 		"Error: copy_replog: Error closing \"%s\"\n",
 		src, 0, 0 );
     }
-    if ( lock_fclose( dfp, dlfp ) == EOF ) {
+    if ( lock_fclose( rfp, lfp ) == EOF ) {
 	Debug( LDAP_DEBUG_ANY,
 		"Error: copy_replog: Error closing \"%s\"\n",
 		src, 0, 0 );

servers/slurpd/ri.c

@@ -124,6 +124,7 @@ Ri_process(
 	while ( !sglob->slurpd_shutdown &&
 		((new_re = re->re_getnext( re )) == NULL )) {
 	    if ( sglob->one_shot_mode ) {
+		rq->rq_unlock( rq );
 		return 0;
 	    }
 	    /* No work - wait on condition variable */

servers/slurpd/st.c

@@ -181,6 +181,7 @@ St_read(
 	return 0;
     }
     if (( rc = acquire_lock( sglob->slurpd_status_file, &fp, &lfp)) < 0 ) {
+	pthread_mutex_unlock( &(st->st_mutex ));
 	return 0;
     }
     while ( fgets( buf, sizeof( buf ), fp ) != NULL ) {