X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/b30930a554edd087932dbff2d4d32f340de28ed1..c86cd3103d043eafe748934c5f79b819505b03e9:/src/OS/os.h-GNU

diff --git a/src/OS/os.h-GNU b/src/OS/os.h-GNU
index 44993163d..59130ef10 100644
--- a/src/OS/os.h-GNU
+++ b/src/OS/os.h-GNU
@@ -1,4 +1,5 @@
 /* Exim: OS-specific C header file for GNU/Hurd */
+/* Copyright (c) The Exim Maintainers 2020 */
 
 #define CRYPT_H
 #define GLIBC_IP_OPTIONS
@@ -20,4 +21,8 @@ typedef struct flock flock_t;
 /* default is non-const */
 #define ICONV_ARG2_TYPE const char **
 
+/* setgroups(0, NULL) succeeds, and drops the gid group
+as well as any supplementary groups*/
+#define OS_SETGROUPS_ZERO_DROPS_ALL
+
 /* End */