#include "libbb.h"
-void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw)
+void FAST_FUNC setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw)
{
- if (loginshell) {
- const char *term;
+ /* Change the current working directory to be the home directory
+ * of the user */
+ if (chdir(pw->pw_dir)) {
+ xchdir("/");
+ bb_error_msg("can't chdir to home directory '%s'", pw->pw_dir);
+ }
- /* 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);
- }
+ if (clear_env) {
+ const char *term;
- /* Leave TERM unchanged. Set HOME, SHELL, USER, LOGNAME, PATH.
+ /* 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 ? bb_default_path : bb_default_root_path));
+ 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 (changeenv) {
+ else if (change_env) {
/* 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) {
+ shortcut:
xsetenv("USER", pw->pw_name);
xsetenv("LOGNAME", pw->pw_name);
}
+ xsetenv("HOME", pw->pw_dir);
+ xsetenv("SHELL", shell);
}
}