1 files changed, 129 insertions, 0 deletions

diff --git a/coreutils/env.c b/coreutils/env.c
new file mode 100644
index 000000000..2ce99b0ad
--- /dev/null
+++ b/coreutils/env.c
@@ -0,0 +1,129 @@
+/* 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)
+{
+        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 && (argv[0][0] == '-') && !argv[0][1]) {
+                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.
+ */
+
+