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Diffstat (limited to 'coreutils/env.c')
| -rw-r--r-- | coreutils/env.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/coreutils/env.c b/coreutils/env.c new file mode 100644 index 0000000..56577b6 --- /dev/null +++ b/coreutils/env.c @@ -0,0 +1,97 @@ +/* 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. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Original copyright notice is retained at the end of this file. + * + * Modified for BusyBox by Erik Andersen <andersen@lineo.com>, <andersee@debian.org> + */ + +#include <stdio.h> +#include <string.h> +#include <getopt.h> +#include <stdlib.h> +#include <unistd.h> +#include "busybox.h" + +extern int env_main(int argc, char** argv) +{ + char **ep, *p; + char *cleanenv[1]; + int ch; + + while ((ch = getopt(argc, argv, "-iu:")) != -1) + switch(ch) { + case '-': + case 'i': + environ = cleanenv; + cleanenv[0] = NULL; + break; + case 'u': + unsetenv(optarg); + break; + default: + show_usage(); + } + for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) + setenv(*argv, ++p, 1); + if (*argv) { + execvp(*argv, argv); + perror_msg_and_die("%s", *argv); + } + for (ep = environ; *ep; ep++) + printf("%s\n", *ep); + exit(EXIT_SUCCESS); +} + +/* + * 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. + */ + + |