krb5 commit: Add ulog_fini()

[Greg Hudson]

https://github.com/krb5/krb5/commit/eb24cc9ca32998eb370ffd6c93dcf7d62c770e5a
commit eb24cc9ca32998eb370ffd6c93dcf7d62c770e5a
Author: Greg Hudson <ghudson at mit.edu>
Date:   Wed Jun 29 17:12:47 2016 -0400

    Add ulog_fini()
    
    Add a function to unmap and free the iprop logging resources attached
    to a krb5_context.

 src/include/kdb_log.h       |    1 +
 src/lib/kdb/kdb_log.c       |   13 +++++++++++++
 src/lib/kdb/libkdb5.exports |    1 +
 3 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/src/include/kdb_log.h b/src/include/kdb_log.h
index bb0847c..25b8236 100644
--- a/src/include/kdb_log.h
+++ b/src/include/kdb_log.h
@@ -77,6 +77,7 @@ update_status_t ulog_get_sno_status(krb5_context context,
                                     const kdb_last_t *last);
 krb5_error_code ulog_get_last(krb5_context context, kdb_last_t *last_out);
 krb5_error_code ulog_set_last(krb5_context context, const kdb_last_t *last);
+void ulog_fini(krb5_context context);
 
 typedef struct kdb_hlog {
     uint32_t        kdb_hmagic;     /* Log header magic # */
diff --git a/src/lib/kdb/kdb_log.c b/src/lib/kdb/kdb_log.c
index 99cda59..766d300 100644
--- a/src/lib/kdb/kdb_log.c
+++ b/src/lib/kdb/kdb_log.c
@@ -672,3 +672,16 @@ ulog_set_last(krb5_context context, const kdb_last_t *last)
     unlock_ulog(context);
     return 0;
 }
+
+void
+ulog_fini(krb5_context context)
+{
+    kdb_log_context *log_ctx = context->kdblog_context;
+
+    if (log_ctx == NULL)
+        return;
+    if (log_ctx->ulog != NULL)
+        munmap(log_ctx->ulog, MAXLOGLEN);
+    free(log_ctx);
+    context->kdblog_context = NULL;
+}
diff --git a/src/lib/kdb/libkdb5.exports b/src/lib/kdb/libkdb5.exports
index 130f8d8..f7b3061 100644
--- a/src/lib/kdb/libkdb5.exports
+++ b/src/lib/kdb/libkdb5.exports
@@ -95,6 +95,7 @@ ulog_free_entries
 xdr_kdb_last_t
 xdr_kdb_incr_result_t
 xdr_kdb_fullresync_result_t
+ulog_fini
 ulog_get_entries
 ulog_get_last
 ulog_get_sno_status