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-rw-r--r--usr.bin/newgrp/newgrp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/usr.bin/newgrp/newgrp.c b/usr.bin/newgrp/newgrp.c
index b3f6103..9b3972e 100644
--- a/usr.bin/newgrp/newgrp.c
+++ b/usr.bin/newgrp/newgrp.c
@@ -73,7 +73,8 @@ main(int argc, char *argv[])
{
int ch, login;
- euid = geteuid();
+ if ((euid = geteuid()) != 0)
+ warnx("need root permissions to function properly, check setuid bit");
if (seteuid(getuid()) < 0)
err(1, "seteuid");
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