dos2unix: tiny shrink

login,su: fix setup_environment() so that it works as intended
          (parameter names were a bit misleading)
fdisk: shrink
help text: shrink

function                                             old     new   delta
login_main                                          1658    1701     +43
setup_environment                                    206     203      -3
dos_compatible_flag                                    4       1      -3
dos2unix_main                                        383     375      -8
get_boot                                            1724    1702     -22
fdisk_main                                          2949    2889     -60
packed_usage                                       24250   23948    -302
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/6 up/down: 43/-398)          Total: -355 bytes
   text    data     bss     dec     hex filename
 798768     661    7428  806857   c4fc9 busybox_old
 798327     658    7428  806413   c4e0d busybox_unstripped

1 files changed, 4 insertions, 4 deletions

diff --git a/libbb/setup_environment.c b/libbb/setup_environment.c
index 19a2c6db5..6e3575cf9 100644
--- a/libbb/setup_environment.c
+++ b/libbb/setup_environment.c
@@ -30,16 +30,16 @@
 
 #include "libbb.h"
 
-void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw)
+void setup_environment(const char *shell, int clear_env, int change_env, const struct passwd *pw)
 {
-        if (loginshell) {
+        if (clear_env) {
                 const char *term;
 
                 /* Change the current working directory to be the home directory
                  * of the user */
                 if (chdir(pw->pw_dir)) {
                         xchdir("/");
-                        fputs("warning: cannot change to home directory\n", stderr);
+                        bb_error_msg("can't chdir to home directory '%s'", pw->pw_dir);
                 }
 
                 /* Leave TERM unchanged. Set HOME, SHELL, USER, LOGNAME, PATH.
@@ -56,7 +56,7 @@ void setup_environment(const char *shell, int loginshell, int changeenv, const s
                 //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.  */
                 if (pw->pw_uid) {