From 7fa24f3661a9755d07d17cb80ef52f053205886c Mon Sep 17 00:00:00 2001
From: ache <ache@FreeBSD.org>
Date: Thu, 27 Apr 1995 19:27:42 +0000
Subject: [PATCH] Remove setre* hacks, we have working thing now

---
 usr.bin/at/at.c    |  8 ++++++-
 usr.bin/at/privs.h | 57 ++++++++++++++--------------------------------
 2 files changed, 24 insertions(+), 41 deletions(-)

diff --git a/usr.bin/at/at.c b/usr.bin/at/at.c
index 1807ba4ecdf2..70fc6c97bb68 100644
--- a/usr.bin/at/at.c
+++ b/usr.bin/at/at.c
@@ -80,7 +80,7 @@
 
 /* File scope variables */
 
-static char rcsid[] = "$Id: at.c,v 1.2 1995/04/12 02:42:28 ache Exp $";
+static char rcsid[] = "$Id: at.c,v 1.3 1995/04/15 22:08:08 ache Exp $";
 char *no_export[] =
 {
     "TERM", "TERMCAP", "DISPLAY", "_"
@@ -250,6 +250,12 @@ writefile(time_t runtimer, char queue)
 
     PRIV_END
 
+    /* We no longer need suid root; now we just need to be able to write
+     * to the directory, if necessary.
+     */
+
+    REDUCE_PRIV(DAEMON_UID, DAEMON_GID)
+
     /* We've successfully created the file; let's set the flag so it 
      * gets removed in case of an interrupt or error.
      */
diff --git a/usr.bin/at/privs.h b/usr.bin/at/privs.h
index 5ed6c5063cc6..2fcaf10731bb 100644
--- a/usr.bin/at/privs.h
+++ b/usr.bin/at/privs.h
@@ -2,25 +2,19 @@
  *  privs.h - header for privileged operations 
  *  Copyright (C) 1993  Thomas Koenig
  *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. The name of the author(s) may not be used to endorse or promote
- *    products derived from this software without specific prior written
- *    permission.
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
  *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
 #ifndef _PRIVS_H
@@ -34,24 +28,6 @@
 #include <unistd.h>
 #endif
 
-#ifdef __FreeBSD__
-/*
- * setre[ug]id() not change r[ug]id for FreeBSD, but check it incorrectly
- * for this program
- */
-#define setreuid(r, e) seteuid(e)
-#define setregid(r, e) setegid(e)
-#define SET_REAL_PRIV(a, b) {\
-				setgid(b); \
-				setuid(a); \
-			    }
-#else
-#define SET_REAL_PRIV(a. b) {\
-				setregid((b), real_gid); \
-				setreuid((a), real_uid); \
-			    }
-#endif
-
 /* Relinquish privileges temporarily for a setuid or setgid program
  * with the option of getting them back later.  This is done by swapping
  * the real and effective userid BSD style.  Call RELINQUISH_PRIVS once
@@ -96,8 +72,8 @@ gid_t real_gid, effective_gid;
 			      effective_uid = geteuid(); \
 			      real_gid = getgid(); \
 			      effective_gid = getegid(); \
-			      setregid(effective_gid, real_gid); \
 			      setreuid(effective_uid, real_uid); \
+			      setregid(effective_gid, real_gid); \
 		          }
 
 #define RELINQUISH_PRIVS_ROOT(a,b) { \
@@ -105,8 +81,8 @@ gid_t real_gid, effective_gid;
 			      effective_uid = geteuid(); \
 			      real_gid = (b); \
 			      effective_gid = getegid(); \
-			      setregid(effective_gid, real_gid); \
 			      setreuid(effective_uid, real_uid); \
+			      setregid(effective_gid, real_gid); \
 		          }
 
 #define PRIV_START {\
@@ -114,8 +90,8 @@ gid_t real_gid, effective_gid;
 		    setregid(real_gid, effective_gid);
 
 #define PRIV_END \
-		    setregid(effective_gid, real_gid); \
 		    setreuid(effective_uid, real_uid); \
+		    setregid(effective_gid, real_gid); \
 		    }
 
 #define REDUCE_PRIV(a,b) {\
@@ -123,6 +99,7 @@ gid_t real_gid, effective_gid;
 			setregid(real_gid, effective_gid); \
 			effective_uid = (a); \
 			effective_gid = (b); \
-			SET_REAL_PRIV(a, b); \
+			setregid(effective_gid, real_gid); \
+			setreuid(effective_uid, real_uid); \
 		    }
 #endif