From 6216a13555696de61620f89aa1c597999b41214b Mon Sep 17 00:00:00 2001
From: Arthur de Jong <arthur@arthurdejong.org>
Date: Sun, 28 Apr 2013 13:14:21 +0000
Subject: return NSS_STATUS_TRYAGAIN on zero-length (but not-NULL) buffer
 (thanks Jakub Hrozek) (f21efd6 from 0.9)

git-svn-id: http://arthurdejong.org/svn/nss-pam-ldapd/nss-pam-ldapd-0.8@1944 ef36b2f9-881f-0410-afb5-c4e39611909c
---
 nss/common.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/nss/common.h b/nss/common.h
index b75f4a4..e8d8e05 100644
--- a/nss/common.h
+++ b/nss/common.h
@@ -86,10 +86,15 @@
 
 /* check validity of passed buffer (Glibc flavour) */
 #define NSS_BUFCHECK \
-  if ((buffer==NULL)||(buflen==0)) \
+  if (buffer==NULL) \
   { \
     *errnop=EINVAL; \
     return NSS_STATUS_UNAVAIL; \
+  } \
+  if (buflen==0) \
+  { \
+    *errnop=ERANGE; \
+    return NSS_STATUS_TRYAGAIN; \
   }
 
 #endif /* NSS_FLAVOUR_GLIBC */
-- 
cgit v1.2.3