1/*	$NetBSD$	*/
2
3#ifndef _SET_EUGID_H_INCLUDED_
4#define _SET_EUGID_H_INCLUDED_
5
6/*++
7/* NAME
8/*	set_eugid 3h
9/* SUMMARY
10/*	set effective user and group attributes
11/* SYNOPSIS
12/*	#include <set_eugid.h>
13/* DESCRIPTION
14/* .nf
15
16 /* External interface. */
17
18extern void set_eugid(uid_t, gid_t);
19
20 /*
21  * The following macros open and close a block that runs at a different
22  * privilege level. To make mistakes with stray curly braces less likely, we
23  * shape the macros below as the head and tail of a do-while loop.
24  */
25#define SAVE_AND_SET_EUGID(uid, gid) do { \
26	uid_t __set_eugid_uid = geteuid(); \
27	gid_t __set_eugid_gid = getegid(); \
28	set_eugid((uid), (gid));
29
30#define RESTORE_SAVED_EUGID() \
31	set_eugid(__set_eugid_uid, __set_eugid_gid); \
32    } while (0)
33
34/* LICENSE
35/* .ad
36/* .fi
37/*	The Secure Mailer license must be distributed with this software.
38/* AUTHOR(S)
39/*	Wietse Venema
40/*	IBM T.J. Watson Research
41/*	P.O. Box 704
42/*	Yorktown Heights, NY 10598, USA
43/*--*/
44
45#endif
46