env.c revision 240116
1240116Smarcel/* 2240116Smarcel * Automated Testing Framework (atf) 3240116Smarcel * 4240116Smarcel * Copyright (c) 2007 The NetBSD Foundation, Inc. 5240116Smarcel * All rights reserved. 6240116Smarcel * 7240116Smarcel * Redistribution and use in source and binary forms, with or without 8240116Smarcel * modification, are permitted provided that the following conditions 9240116Smarcel * are met: 10240116Smarcel * 1. Redistributions of source code must retain the above copyright 11240116Smarcel * notice, this list of conditions and the following disclaimer. 12240116Smarcel * 2. Redistributions in binary form must reproduce the above copyright 13240116Smarcel * notice, this list of conditions and the following disclaimer in the 14240116Smarcel * documentation and/or other materials provided with the distribution. 15240116Smarcel * 16240116Smarcel * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 17240116Smarcel * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 18240116Smarcel * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19240116Smarcel * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20240116Smarcel * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 21240116Smarcel * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22240116Smarcel * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 23240116Smarcel * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24240116Smarcel * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25240116Smarcel * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26240116Smarcel * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27240116Smarcel * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28240116Smarcel */ 29240116Smarcel 30240116Smarcel#if defined(HAVE_CONFIG_H) 31240116Smarcel#include "bconfig.h" 32240116Smarcel#endif 33240116Smarcel 34240116Smarcel#include <errno.h> 35240116Smarcel#include <stdlib.h> 36240116Smarcel 37240116Smarcel#include "atf-c/error.h" 38240116Smarcel 39240116Smarcel#include "env.h" 40240116Smarcel#include "sanity.h" 41240116Smarcel#include "text.h" 42240116Smarcel 43240116Smarcelconst char * 44240116Smarcelatf_env_get(const char *name) 45240116Smarcel{ 46240116Smarcel const char* val = getenv(name); 47240116Smarcel PRE(val != NULL); 48240116Smarcel return val; 49240116Smarcel} 50240116Smarcel 51240116Smarcelbool 52240116Smarcelatf_env_has(const char *name) 53240116Smarcel{ 54240116Smarcel return getenv(name) != NULL; 55240116Smarcel} 56240116Smarcel 57240116Smarcelatf_error_t 58240116Smarcelatf_env_set(const char *name, const char *val) 59240116Smarcel{ 60240116Smarcel atf_error_t err; 61240116Smarcel 62240116Smarcel#if defined(HAVE_SETENV) 63240116Smarcel if (setenv(name, val, 1) == -1) 64240116Smarcel err = atf_libc_error(errno, "Cannot set environment variable " 65240116Smarcel "'%s' to '%s'", name, val); 66240116Smarcel else 67240116Smarcel err = atf_no_error(); 68240116Smarcel#elif defined(HAVE_PUTENV) 69240116Smarcel char *buf; 70240116Smarcel 71240116Smarcel err = atf_text_format(&buf, "%s=%s", name, val); 72240116Smarcel if (!atf_is_error(err)) { 73240116Smarcel if (putenv(buf) == -1) 74240116Smarcel err = atf_libc_error(errno, "Cannot set environment variable " 75240116Smarcel "'%s' to '%s'", name, val); 76240116Smarcel free(buf); 77240116Smarcel } 78240116Smarcel#else 79240116Smarcel# error "Don't know how to set an environment variable." 80240116Smarcel#endif 81240116Smarcel 82240116Smarcel return err; 83240116Smarcel} 84240116Smarcel 85240116Smarcelatf_error_t 86240116Smarcelatf_env_unset(const char *name) 87240116Smarcel{ 88240116Smarcel atf_error_t err; 89240116Smarcel 90240116Smarcel#if defined(HAVE_UNSETENV) 91240116Smarcel unsetenv(name); 92240116Smarcel err = atf_no_error(); 93240116Smarcel#elif defined(HAVE_PUTENV) 94240116Smarcel char *buf; 95240116Smarcel 96240116Smarcel err = atf_text_format(&buf, "%s=", name); 97240116Smarcel if (!atf_is_error(err)) { 98240116Smarcel if (putenv(buf) == -1) 99240116Smarcel err = atf_libc_error(errno, "Cannot unset environment variable" 100240116Smarcel " '%s'", name); 101240116Smarcel free(buf); 102240116Smarcel } 103240116Smarcel#else 104240116Smarcel# error "Don't know how to unset an environment variable." 105240116Smarcel#endif 106240116Smarcel 107240116Smarcel return err; 108240116Smarcel} 109