[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/libbb/setup_environment.c b/ap/app/busybox/src/libbb/setup_environment.c
new file mode 100644
index 0000000..4258656
--- /dev/null
+++ b/ap/app/busybox/src/libbb/setup_environment.c
@@ -0,0 +1,74 @@
+/* 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);
+ }
+}