| /* vi: set sw=4 ts=4: */ |
| /* |
| * env implementation for busybox |
| * |
| * Copyright (c) 1988, 1993, 1994 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
| * |
| * Original copyright notice is retained at the end of this file. |
| * |
| * Modified for BusyBox by Erik Andersen <andersen@codepoet.org> |
| */ |
| |
| /* BB_AUDIT SUSv3 compliant */ |
| /* http://www.opengroup.org/onlinepubs/007904975/utilities/env.html */ |
| |
| /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) |
| * |
| * Fixed bug involving exit return codes if execvp fails. Also added |
| * output error checking. |
| */ |
| |
| /* |
| * Modified by Vladimir Oleynik <dzo@simtreas.ru> (C) 2003 |
| * - correct "-" option usage |
| * - multiple "-u unsetenv" support |
| * - GNU long option support |
| * - use xfunc_error_retval |
| */ |
| |
| #include "busybox.h" |
| #include <errno.h> |
| #include <getopt.h> /* struct option */ |
| |
| #if ENABLE_FEATURE_ENV_LONG_OPTIONS |
| static const struct option env_long_options[] = { |
| { "ignore-environment", 0, NULL, 'i' }, |
| { "unset", 1, NULL, 'u' }, |
| { 0, 0, 0, 0 } |
| }; |
| #endif |
| |
| int env_main(int argc, char** argv); |
| int env_main(int argc, char** argv) |
| { |
| static char *cleanenv[1] = { NULL }; |
| |
| char **ep; |
| unsigned opt; |
| llist_t *unset_env = NULL; |
| extern char **environ; |
| |
| opt_complementary = "u::"; |
| #if ENABLE_FEATURE_ENV_LONG_OPTIONS |
| applet_long_options = env_long_options; |
| #endif |
| |
| opt = getopt32(argc, argv, "+iu:", &unset_env); |
| |
| argv += optind; |
| if (*argv && LONE_DASH(argv[0])) { |
| opt |= 1; |
| ++argv; |
| } |
| |
| if (opt & 1) |
| environ = cleanenv; |
| else if (opt & 2) { |
| while (unset_env) { |
| unsetenv(unset_env->data); |
| unset_env = unset_env->link; |
| } |
| } |
| |
| while (*argv && (strchr(*argv, '=') != NULL)) { |
| if (putenv(*argv) < 0) { |
| bb_perror_msg_and_die("putenv"); |
| } |
| ++argv; |
| } |
| |
| if (*argv) { |
| execvp(*argv, argv); |
| /* SUSv3-mandated exit codes. */ |
| xfunc_error_retval = (errno == ENOENT) ? 127 : 126; |
| bb_perror_msg_and_die("%s", *argv); |
| } |
| |
| for (ep = environ; *ep; ep++) { |
| puts(*ep); |
| } |
| |
| fflush_stdout_and_exit(0); |
| } |
| |
| /* |
| * 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. <BSD Advertising Clause omitted per the July 22, 1999 licensing change |
| * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change> |
| * |
| * 4. 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. |
| */ |
| |
| |