Allow applications to disable the installation of the atexit() handler

which cleans up OPIE lockfiles. This is required for pam_opie.

Submitted by:   Jim Bloom <bloom@acm.org>

2 files changed, 13 insertions, 2 deletions

diff --git a/contrib/opie/libopie/lock.c b/contrib/opie/libopie/lock.c
index fc449d4..0f666a6 100644
--- a/contrib/opie/libopie/lock.c
+++ b/contrib/opie/libopie/lock.c
@@ -27,6 +27,8 @@ License Agreement applies to this software.
             error return values. Check open() return value properly.
             Avoid NULL.
         Created at NRL for OPIE 2.2 from opiesubr2.c
+
+$FreeBSD$
 */
 #include "opie_cfg.h"
 #if HAVE_STRING_H
@@ -49,12 +51,17 @@ License Agreement applies to this software.
 #endif /* !HAVE_LSTAT */
 
 int __opie_lockrefcount = 0;
+static int do_atexit = 1;
 
+VOIDRET opiedisableaeh FUNCTION_NOARGS
+{
+  do_atexit = 0;
+}
 #if USER_LOCKING
 char *__opie_lockfilename = (char *)0;
 
 /* atexit() handler for opielock() */
-static VOIDRET opieunlockaeh FUNCTION_NOARGS
+VOIDRET opieunlockaeh FUNCTION_NOARGS
 {
   if (__opie_lockfilename) {
     __opie_lockrefcount = 0;
@@ -227,7 +234,8 @@ int opielock FUNCTION((principal), char *principal)
     
   __opie_lockrefcount++;
   rval = 0;
-  atexit(opieunlockaeh);
+  if (do_atexit)
+    atexit(opieunlockaeh);
 
 lockret:
   if (fh >= 0)
diff --git a/contrib/opie/opie.h b/contrib/opie/opie.h
index 71db7bd..c41fabf 100644
--- a/contrib/opie/opie.h
+++ b/contrib/opie/opie.h
@@ -93,6 +93,9 @@ void opiehash __P((void *, unsigned));
 int  opiehtoi __P((register char));
 int  opiekeycrunch __P((int, char *, char *, char *));
 int  opielock __P((char *));
+int  opieunlock __P((void));
+void opieunlockaeh __P((void));
+void opiedisableaeh __P((void));
 int  opielookup __P((struct opie *,char *));
 int  opiepasscheck __P((char *));
 void opierandomchallenge __P((char *));