2 files changed, 31 insertions, 1 deletions
diff --git a/src/lib/krb5/ccache/cc-int.h b/src/lib/krb5/ccache/cc-int.h
index 4c0db959d7..84b100286a 100644
--- a/src/lib/krb5/ccache/cc-int.h
+++ b/src/lib/krb5/ccache/cc-int.h
@@ -64,6 +64,36 @@ krb5int_cc_typecursor_free(
     krb5_context context,
     krb5_cc_typecursor *cursor);
 
+/* reentrant mutex used by krb5_cc_* functions */
+typedef struct _k5_cc_mutex {
+    k5_mutex_t lock;
+    krb5_context owner;
+    krb5_int32 refcount;
+} k5_cc_mutex;
+
+#define K5_CC_MUTEX_PARTIAL_INITIALIZER \
+	{ K5_MUTEX_PARTIAL_INITIALIZER, NULL, 0 }
+
+krb5_error_code
+k5_cc_mutex_init(k5_cc_mutex *m);
+
+krb5_error_code
+k5_cc_mutex_finish_init(k5_cc_mutex *m);
+
+#define k5_cc_mutex_destroy(M) \
+k5_mutex_destroy(&(M)->lock);
+
+void
+k5_cc_mutex_assert_locked(krb5_context context, k5_cc_mutex *m);
+
+void
+k5_cc_mutex_assert_unlocked(krb5_context context, k5_cc_mutex *m);
+
+krb5_error_code
+k5_cc_mutex_lock(krb5_context context, k5_cc_mutex *m);
+
+krb5_error_code
+k5_cc_mutex_unlock(krb5_context context, k5_cc_mutex *m);
 
 extern k5_cc_mutex krb5int_mcc_mutex;
 extern k5_cc_mutex krb5int_krcc_mutex;
diff --git a/src/lib/krb5/ccache/cc_file.c b/src/lib/krb5/ccache/cc_file.c
index b5a0990599..71476d7788 100644
--- a/src/lib/krb5/ccache/cc_file.c
+++ b/src/lib/krb5/ccache/cc_file.c
@@ -76,7 +76,7 @@ etc.
    fcc_nseq.c and fcc_read don't check return values a lot.
  */
 #include "k5-int.h"
-
+#include "cc-int.h"
 
 #include <stdio.h>
 #include <errno.h>