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Diffstat (limited to 'i/pc104/initrd/conf/busybox/libbb/setup_environment.c')
-rw-r--r--i/pc104/initrd/conf/busybox/libbb/setup_environment.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/libbb/setup_environment.c b/i/pc104/initrd/conf/busybox/libbb/setup_environment.c
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index 0000000..874a58e
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+++ b/i/pc104/initrd/conf/busybox/libbb/setup_environment.c
@@ -0,0 +1,83 @@
+/* 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 <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <syslog.h>
+#include <ctype.h>
+#include "libbb.h"
+
+
+
+#define DEFAULT_LOGIN_PATH "/bin:/usr/bin"
+#define DEFAULT_ROOT_LOGIN_PATH "/usr/sbin:/bin:/usr/bin:/sbin"
+
+void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw)
+{
+ if (loginshell) {
+ const char *term;
+
+ /* Change the current working directory to be the home directory
+ * of the user. It is a fatal error for this process to be unable
+ * to change to that directory. There is no "default" home
+ * directory.
+ * Some systems default to HOME=/
+ */
+ if (chdir(pw->pw_dir)) {
+ xchdir("/");
+ fputs("warning: cannot change to home directory\n", stderr);
+ }
+
+ /* Leave TERM unchanged. Set HOME, SHELL, USER, LOGNAME, PATH.
+ Unset all other environment variables. */
+ term = getenv("TERM");
+ clearenv();
+ if (term)
+ xsetenv("TERM", term);
+ xsetenv("HOME", pw->pw_dir);
+ xsetenv("SHELL", shell);
+ xsetenv("USER", pw->pw_name);
+ xsetenv("LOGNAME", pw->pw_name);
+ xsetenv("PATH", (pw->pw_uid ? DEFAULT_LOGIN_PATH : DEFAULT_ROOT_LOGIN_PATH));
+ }
+ else if (changeenv) {
+ /* Set HOME, SHELL, and if not becoming a super-user,
+ USER and LOGNAME. */
+ xsetenv("HOME", pw->pw_dir);
+ xsetenv("SHELL", shell);
+ if (pw->pw_uid) {
+ xsetenv("USER", pw->pw_name);
+ xsetenv("LOGNAME", pw->pw_name);
+ }
+ }
+}