X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/b30930a554edd087932dbff2d4d32f340de28ed1..04403ab0b5778126d98d5c9dc8064405688129e0:/src/OS/os.h-GNU?ds=inline

diff --git a/src/OS/os.h-GNU b/src/OS/os.h-GNU
index 44993163d..1de2e3e84 100644
--- a/src/OS/os.h-GNU
+++ b/src/OS/os.h-GNU
@@ -20,4 +20,8 @@ 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 */