1 /* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */ 2 /* 3 * Copyright (C) 1989-1998,2002 by the Massachusetts Institute of Technology, 4 * Cambridge, MA, USA. All Rights Reserved. 5 * 6 * This software is being provided to you, the LICENSEE, by the 7 * Massachusetts Institute of Technology (M.I.T.) under the following 8 * license. By obtaining, using and/or copying this software, you agree 9 * that you have read, understood, and will comply with these terms and 10 * conditions: 11 * 12 * Export of this software from the United States of America may 13 * require a specific license from the United States Government. 14 * It is the responsibility of any person or organization contemplating 15 * export to obtain such a license before exporting. 16 * 17 * WITHIN THAT CONSTRAINT, permission to use, copy, modify and distribute 18 * this software and its documentation for any purpose and without fee or 19 * royalty is hereby granted, provided that you agree to comply with the 20 * following copyright notice and statements, including the disclaimer, and 21 * that the same appear on ALL copies of the software and documentation, 22 * including modifications that you make for internal use or for 23 * distribution: 24 * 25 * THIS SOFTWARE IS PROVIDED "AS IS", AND M.I.T. MAKES NO REPRESENTATIONS 26 * OR WARRANTIES, EXPRESS OR IMPLIED. By way of example, but not 27 * limitation, M.I.T. MAKES NO REPRESENTATIONS OR WARRANTIES OF 28 * MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF 29 * THE LICENSED SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY THIRD PARTY 30 * PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS. 31 * 32 * The name of the Massachusetts Institute of Technology or M.I.T. may NOT 33 * be used in advertising or publicity pertaining to distribution of the 34 * software. Title to copyright in this software and any associated 35 * documentation shall at all times remain with M.I.T., and USER agrees to 36 * preserve same. 37 * 38 * Furthermore if you modify this software you must label 39 * your software as modified software and not distribute it in such a 40 * fashion that it might be confused with the original M.I.T. software. 41 */ 42 43 /* 44 * "internal" utility functions used by various applications. 45 * They live in libkrb5util. 46 */ 47 48 #include "autoconf.h" 49 50 #ifdef HAVE_SYS_TYPES_H 51 #include <sys/types.h> 52 #endif 53 54 #ifdef HAVE_UNISTD_H 55 #include <unistd.h> 56 #endif 57 58 #ifdef HAVE_STDLIB_H 59 #include <stdlib.h> 60 #endif 61 62 #include <errno.h> 63 64 #ifndef krb5_seteuid 65 66 #if defined(HAVE_SETEUID) 67 # define krb5_seteuid(EUID) (seteuid((uid_t)(EUID))) 68 #elif defined(HAVE_SETRESUID) 69 # define krb5_seteuid(EUID) setresuid(getuid(), (uid_t)(EUID), geteuid()) 70 #elif defined(HAVE_SETREUID) 71 # define krb5_seteuid(EUID) setreuid(geteuid(), (uid_t)(EUID)) 72 #else 73 /* You need to add a case to deal with this operating system.*/ 74 # define krb5_seteuid(EUID) (errno = EPERM, -1) 75 #endif 76 77 #ifdef HAVE_SETEGID 78 # define krb5_setegid(EGID) (setegid((gid_t)(EGID))) 79 #elif defined(HAVE_SETRESGID) 80 # define krb5_setegid(EGID) (setresgid(getgid(), (gid_t)(EGID), getegid())) 81 #elif defined(HAVE_SETREGID) 82 # define krb5_setegid(EGID) (setregid(getegid(), (gid_t)(EGID))) 83 #else 84 /* You need to add a case to deal with this operating system.*/ 85 # define krb5_setegid(EGID) (errno = EPERM, -1) 86 #endif 87 88 #endif 89