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- /* vi: set sw=4 ts=4: */
- /*
- * Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
- * 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 Julianne F. Haugh 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 JULIE HAUGH 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 JULIE HAUGH 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.
- */
- #include "libbb.h"
- void FAST_FUNC setup_environment(const char *shell, int flags, const struct passwd *pw)
- {
- if (!shell || !shell[0])
- shell = DEFAULT_SHELL;
- /* Change the current working directory to be the home directory
- * of the user */
- if (!(flags & SETUP_ENV_NO_CHDIR)) {
- if (chdir(pw->pw_dir) != 0) {
- bb_error_msg("can't change directory to '%s'", pw->pw_dir);
- xchdir((flags & SETUP_ENV_TO_TMP) ? "/tmp" : "/");
- }
- }
- if (flags & SETUP_ENV_CLEARENV) {
- const char *term;
- /* Leave TERM unchanged. Set HOME, SHELL, USER, LOGNAME, PATH.
- * Unset all other environment variables. */
- term = getenv("TERM");
- clearenv();
- if (term)
- xsetenv("TERM", term);
- xsetenv("PATH", (pw->pw_uid ? bb_default_path : bb_default_root_path));
- goto shortcut;
- // No, gcc (4.2.1) is not clever enougn to do it itself.
- //xsetenv("USER", pw->pw_name);
- //xsetenv("LOGNAME", pw->pw_name);
- //xsetenv("HOME", pw->pw_dir);
- //xsetenv("SHELL", shell);
- } else if (flags & SETUP_ENV_CHANGEENV) {
- /* Set HOME, SHELL, and if not becoming a super-user,
- * USER and LOGNAME. */
- if (pw->pw_uid) {
- shortcut:
- xsetenv("USER", pw->pw_name);
- xsetenv("LOGNAME", pw->pw_name);
- }
- xsetenv("HOME", pw->pw_dir);
- xsetenv("SHELL", shell);
- }
- }
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