/* $OpenBSD: env.c,v 1.12 2006/05/28 05:29:54 ray Exp $ */ /* * Copyright (c) 1988, 1993, 1994 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef lint static char copyright[] = "@(#) Copyright (c) 1988, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint /*static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94";*/ static char rcsid[] = "$OpenBSD: env.c,v 1.12 2006/05/28 05:29:54 ray Exp $"; #endif /* not lint */ #include <err.h> #include <errno.h> #include <locale.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> __dead void usage(void); int main(int argc, char *argv[]) { extern char **environ; extern int optind; char **ep, *p; int ch; setlocale(LC_ALL, ""); while ((ch = getopt(argc, argv, "i-")) != -1) switch(ch) { case '-': /* obsolete */ case 'i': if ((environ = calloc(1, sizeof(char *))) == NULL) err(126, "calloc"); break; default: usage(); } argc -= optind; argv += optind; for (; *argv && (p = strchr(*argv, '=')); ++argv) if (setenv(*argv, ++p, 1) == -1) { /* reuse 126, it matches the problem most */ exit(126); } if (*argv) { /* * return 127 if the command to be run could not be * found; 126 if the command was found but could * not be invoked */ execvp(*argv, argv); err((errno == ENOENT) ? 127 : 126, "%s", *argv); } for (ep = environ; *ep; ep++) (void)printf("%s\n", *ep); exit(0); } void usage(void) { extern char *__progname; (void)fprintf(stderr, "usage: %s [-i] [name=value ...] " "[utility [argument ...]]\n", __progname); exit(1); }