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