X-Git-Url: https://git.distorted.org.uk/~mdw/tripe/blobdiff_plain/52b866481399dfcecd295560800d3e3fe0090f24..ddb384f1ac7fbaed5a4dbb02ddc37d0713727be4:/common/util.c

diff --git a/common/util.c b/common/util.c
index 92b9853d..78358b31 100644
--- a/common/util.c
+++ b/common/util.c
@@ -137,7 +137,9 @@ gid_t u_getgroup(const char *name)
 
 void u_setugid(uid_t u, gid_t g)
 {
-  if (g != (gid_t)-1) {
+  uid_t cu = geteuid();
+
+  if (cu == 0 && g != (gid_t)-1) {
     if (setgid(g) || (getuid() == 0 && setgroups(1, &g))) {
       die(EXIT_FAILURE, "couldn't setgid to %u: %s",
 	  (unsigned)g, strerror(errno));