From 122f9363682e5de8ce4056c4c05c1eaf8935cf19 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Wed, 21 Jul 2021 11:17:53 +0000
Subject:  Save errno when freeing a cdb

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 src/libstddjb/cdb_free.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'src/libstddjb')

diff --git a/src/libstddjb/cdb_free.c b/src/libstddjb/cdb_free.c
index 04ebf3e..d4250ec 100644
--- a/src/libstddjb/cdb_free.c
+++ b/src/libstddjb/cdb_free.c
@@ -1,10 +1,17 @@
 /* ISC license. */
 
 #include <sys/mman.h>
+#include <errno.h>
+
 #include <skalibs/cdb.h>
 
 extern void cdb_free (struct cdb *c)
 {
-  if (c->map) munmap(c->map, c->size) ;
+  if (c->map)
+  {
+    int e = errno ;
+    munmap(c->map, c->size) ;
+    errno = e ;
+  }
   *c = cdb_zero ;
 }
-- 
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