X-Git-Url: http://git.marmaro.de/?a=blobdiff_plain;ds=sidebyside;f=uip%2Finc.c;h=33672de6fdc27d8498ee7e2ce6c289934888d797;hb=0a96784b09f85f33437936b5dcfa819a33fa5bac;hp=8a05c6a0527dcd3823701b61f954fcb24902e95e;hpb=77ce143a56ef8238d974fd7e1e893516ec58772f;p=mmh

diff --git a/uip/inc.c b/uip/inc.c
index 8a05c6a..33672de 100644
--- a/uip/inc.c
+++ b/uip/inc.c
@@ -97,8 +97,16 @@ static int return_gid;
 ** easy case; we're not setuid root, so can drop group privs immediately.
 */
 #define TRYDROPGROUPPRIVS() DROPGROUPPRIVS()
-#define DROPGROUPPRIVS() setgid(getgid())
-#define GETGROUPPRIVS() setgid(return_gid)
+#define DROPGROUPPRIVS() \
+    if (setegid(getgid()) != 0) { \
+        advise ("setegid", "unable to set group to %ld", (long) getgid()); \
+		_exit (-1); \
+    }
+#define GETGROUPPRIVS() \
+    if (setegid(return_gid) != 0) { \
+        advise ("setegid", "unable to set group to %ld", (long) return_gid); \
+		_exit (-1); \
+    }
 #define SAVEGROUPPRIVS() return_gid = getegid()
 #else
 /* define *GROUPPRIVS() as null; this avoids having lots of "#ifdef MAILGROUP"s */