From d859f7056b3e04d6da09da3ac759872c86849b99 Mon Sep 17 00:00:00 2001
From: tholo <tholo@openbsd.org>
Date: Sat, 21 Dec 1996 22:06:21 +0000
Subject: [PATCH] Deal correctly with being SGID

---
 games/rogue/init.c    | 5 +++++
 games/rogue/machdep.c | 4 ++++
 games/rogue/score.c   | 4 ++++
 3 files changed, 13 insertions(+)

diff --git a/games/rogue/init.c b/games/rogue/init.c
index 339a495f95f..60b7b24fc9e 100644
--- a/games/rogue/init.c
+++ b/games/rogue/init.c
@@ -57,6 +57,7 @@ static char rcsid[] = "$NetBSD: init.c,v 1.4 1995/04/28 23:49:19 mycroft Exp $";
  */
 
 #include <stdio.h>
+#include <unistd.h>
 #include "rogue.h"
 
 char login_name[MAX_OPT_LEN];
@@ -72,6 +73,7 @@ boolean no_skull = 0;
 boolean passgo = 0;
 char *error_file = "rogue.esave";
 char *byebye_string = "Okay, bye bye!";
+gid_t gid, egid;
 
 extern char *fruit;
 extern char *save_file;
@@ -85,6 +87,9 @@ char *argv[];
 	char *pn;
 	int seed;
 
+	gid = getgid();
+	egid = getegid();
+	setegid(gid);
 	pn = md_gln();
 	if ((!pn) || (strlen(pn) >= MAX_OPT_LEN)) {
 		clean_up("Hey!  Who are you?");
diff --git a/games/rogue/machdep.c b/games/rogue/machdep.c
index 1862d40a6f6..b969f58bdb7 100644
--- a/games/rogue/machdep.c
+++ b/games/rogue/machdep.c
@@ -454,14 +454,18 @@ int status;
 md_lock(l)
 boolean l;
 {
+	extern gid_t gid, egid;
 	static int fd;
 	short tries;
 
 	if (l) {
+		setegid(egid);
 		if ((fd = open(_PATH_SCOREFILE, O_RDONLY)) < 1) {
+			setegid(gid);
 			message("cannot lock score file", 0);
 			return;
 		}
+		setegid(gid);
 		for (tries = 0; tries < 5; tries++)
 			if (!flock(fd, LOCK_EX|LOCK_NB))
 				return;
diff --git a/games/rogue/score.c b/games/rogue/score.c
index 814c1d3915f..98635ab3f87 100644
--- a/games/rogue/score.c
+++ b/games/rogue/score.c
@@ -209,14 +209,18 @@ short other;
 	FILE *fp;
 	long s;
 	boolean pause = score_only;
+	extern gid_t gid, egid;
 
 	md_lock(1);
 
+	setegid(egid);
 	if ((fp = fopen(_PATH_SCOREFILE, "r+")) == NULL &&
 	    (fp = fopen(_PATH_SCOREFILE, "w+")) == NULL) {
+		setegid(gid);
 		message("cannot read/write/create score file", 0);
 		sf_error();
 	}
+	setegid(gid);
 	rewind(fp);
 	(void) xxx(1);
 
-- 
2.20.1