1 /* 2 * Automated Testing Framework (atf) 3 * 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 17 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #if defined(HAVE_CONFIG_H) 31 #include "bconfig.h" 32 #endif 33 34 #include <errno.h> 35 #include <stdlib.h> 36 37 #include "atf-c/error.h" 38 39 #include "env.h" 40 #include "sanity.h" 41 #include "text.h" 42 43 const char * 44 atf_env_get(const char *name) 45 { 46 const char* val = getenv(name); 47 PRE(val != NULL); 48 return val; 49 } 50 51 bool 52 atf_env_has(const char *name) 53 { 54 return getenv(name) != NULL; 55 } 56 57 atf_error_t 58 atf_env_set(const char *name, const char *val) 59 { 60 atf_error_t err; 61 62 #if defined(HAVE_SETENV) 63 if (setenv(name, val, 1) == -1) 64 err = atf_libc_error(errno, "Cannot set environment variable " 65 "'%s' to '%s'", name, val); 66 else 67 err = atf_no_error(); 68 #elif defined(HAVE_PUTENV) 69 char *buf; 70 71 err = atf_text_format(&buf, "%s=%s", name, val); 72 if (!atf_is_error(err)) { 73 if (putenv(buf) == -1) 74 err = atf_libc_error(errno, "Cannot set environment variable " 75 "'%s' to '%s'", name, val); 76 free(buf); 77 } 78 #else 79 # error "Don't know how to set an environment variable." 80 #endif 81 82 return err; 83 } 84 85 atf_error_t 86 atf_env_unset(const char *name) 87 { 88 atf_error_t err; 89 90 #if defined(HAVE_UNSETENV) 91 unsetenv(name); 92 err = atf_no_error(); 93 #elif defined(HAVE_PUTENV) 94 char *buf; 95 96 err = atf_text_format(&buf, "%s=", name); 97 if (!atf_is_error(err)) { 98 if (putenv(buf) == -1) 99 err = atf_libc_error(errno, "Cannot unset environment variable" 100 " '%s'", name); 101 free(buf); 102 } 103 #else 104 # error "Don't know how to unset an environment variable." 105 #endif 106 107 return err; 108 } 109