1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T 24*0Sstevel@tonic-gate * All Rights Reserved 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* 28*0Sstevel@tonic-gate */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate #ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5 */ 31*0Sstevel@tonic-gate 32*0Sstevel@tonic-gate /* 33*0Sstevel@tonic-gate * env [ - ] [ name=value ]... [command arg...] 34*0Sstevel@tonic-gate * set environment, then execute command (or print environment) 35*0Sstevel@tonic-gate * - says start fresh, otherwise merge with inherited environment 36*0Sstevel@tonic-gate */ 37*0Sstevel@tonic-gate 38*0Sstevel@tonic-gate 39*0Sstevel@tonic-gate #include <stdio.h> 40*0Sstevel@tonic-gate #include <string.h> 41*0Sstevel@tonic-gate #include <stdlib.h> 42*0Sstevel@tonic-gate #include <errno.h> 43*0Sstevel@tonic-gate #include <unistd.h> 44*0Sstevel@tonic-gate #include <limits.h> 45*0Sstevel@tonic-gate #include <ctype.h> 46*0Sstevel@tonic-gate #include <locale.h> 47*0Sstevel@tonic-gate #include <string.h> 48*0Sstevel@tonic-gate #include <unistd.h> 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate static void Usage(); 52*0Sstevel@tonic-gate static char *nullp = NULL; 53*0Sstevel@tonic-gate extern char **environ; 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate int 57*0Sstevel@tonic-gate main(int argc, char **argv) 58*0Sstevel@tonic-gate { 59*0Sstevel@tonic-gate char **p; 60*0Sstevel@tonic-gate int opt; 61*0Sstevel@tonic-gate int i; 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate (void) setlocale(LC_ALL, ""); 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 67*0Sstevel@tonic-gate #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */ 68*0Sstevel@tonic-gate #endif 69*0Sstevel@tonic-gate (void) textdomain(TEXT_DOMAIN); 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate /* check for non-standard "-" option */ 72*0Sstevel@tonic-gate if ((argc > 1) && (strcmp(argv[1], "-")) == 0) { 73*0Sstevel@tonic-gate environ = &nullp; 74*0Sstevel@tonic-gate for (i = 1; i < argc; i++) 75*0Sstevel@tonic-gate argv[i] = argv[i+1]; 76*0Sstevel@tonic-gate argc--; 77*0Sstevel@tonic-gate } 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate /* get options */ 80*0Sstevel@tonic-gate while ((opt = getopt(argc, argv, "i")) != EOF) { 81*0Sstevel@tonic-gate switch (opt) { 82*0Sstevel@tonic-gate case 'i': 83*0Sstevel@tonic-gate environ = &nullp; 84*0Sstevel@tonic-gate break; 85*0Sstevel@tonic-gate 86*0Sstevel@tonic-gate default: 87*0Sstevel@tonic-gate Usage(); 88*0Sstevel@tonic-gate } 89*0Sstevel@tonic-gate } 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate /* get environment strings */ 92*0Sstevel@tonic-gate while (argv[optind] != NULL && strchr(argv[optind], '=') != NULL) { 93*0Sstevel@tonic-gate if (putenv(argv[optind])) { 94*0Sstevel@tonic-gate (void) perror(argv[optind]); 95*0Sstevel@tonic-gate exit(1); 96*0Sstevel@tonic-gate } 97*0Sstevel@tonic-gate optind++; 98*0Sstevel@tonic-gate } 99*0Sstevel@tonic-gate 100*0Sstevel@tonic-gate /* if no utility, output environment strings */ 101*0Sstevel@tonic-gate if (argv[optind] == NULL) { 102*0Sstevel@tonic-gate p = environ; 103*0Sstevel@tonic-gate while (*p != NULL) 104*0Sstevel@tonic-gate (void) puts(*p++); 105*0Sstevel@tonic-gate } else { 106*0Sstevel@tonic-gate (void) execvp(argv[optind], &argv[optind]); 107*0Sstevel@tonic-gate (void) perror(argv[0]); 108*0Sstevel@tonic-gate exit(((errno == ENOENT) || (errno == ENOTDIR)) ? 127 : 126); 109*0Sstevel@tonic-gate } 110*0Sstevel@tonic-gate return (0); 111*0Sstevel@tonic-gate } 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate static void 115*0Sstevel@tonic-gate Usage() 116*0Sstevel@tonic-gate { 117*0Sstevel@tonic-gate (void) fprintf(stderr, gettext( 118*0Sstevel@tonic-gate "Usage: env [-i] [name=value ...] [utility [argument ...]]\n" 119*0Sstevel@tonic-gate " env [-] [name=value ...] [utility [argument ...]]\n")); 120*0Sstevel@tonic-gate exit(1); 121*0Sstevel@tonic-gate } 122