last_patch89 from vodz:

    Manuel,

    I rewrite bb_getopt_ulflags() function for more universal usage.
    My version support now:
    - options with arguments (optional arg as GNU extension also)
    - complementaly and/or incomplementaly and/or incongruously and/or list
    options
    - long_opt (all applets may have long option, add supporting is trivial)
    This realisation full compatibile from your version.
    Code size grow 480 bytes, but only coreutils/* over compensate this size
    after using new function. Last patch reduced over 800 bytes and not full
    applied to all. "mkdir" and "mv" applets have long_opt now for demonstrate
    trivial addition support long_opt with usage new bb_getopt_ulflags().
    Complementaly and/or incomplementaly and/or incongruously and/or list options
    logic is not trivial, but new "cut" and "grep" applets using this logic
    for examples with full demostrating. New "grep" applet reduced over 300
    bytes.

    Mark,
    Also. I removed bug from "grep" applet.
    $ echo a b | busybox grep -e a b
    a b
    a b
    But right is printing one only.

    --w
    vodz

1 files changed, 12 insertions, 28 deletions

diff --git a/loginutils/adduser.c b/loginutils/adduser.c
index cfaf860e0..6784d32cc 100644
--- a/loginutils/adduser.c
+++ b/loginutils/adduser.c
@@ -208,9 +208,15 @@ static int adduser(const char *filename, struct passwd *p)
 
 
 /* return current uid (root is always uid == 0, right?) */
-static inline uid_t i_am_not_root(void)
+#ifndef CONFIG_ADDGROUP
+static inline void if_i_am_not_root(void)
+#else
+void if_i_am_not_root(void)
+#endif
 {
-        return geteuid();
+        if (geteuid()) {
+                bb_error_msg_and_die( "Only root may add a user or group to the system.");
+        }
 }
 
 /*
@@ -224,11 +230,10 @@ static inline uid_t i_am_not_root(void)
  * ________________________________________________________________________ */
 int adduser_main(int argc, char **argv)
 {
-        int opt;
         const char *login;
-        const char *gecos;
+        const char *gecos = default_gecos;
         const char *home = NULL;
-        const char *shell;
+        const char *shell = default_shell;
 
         struct passwd pw;
 
@@ -236,30 +241,11 @@ int adduser_main(int argc, char **argv)
         if (argc < 2) {
                 bb_show_usage();
         }
-        gecos = default_gecos;
-        shell = default_shell;
-
         /* get args */
-        while ((opt = getopt (argc, argv, "h:g:s:")) != -1)
-                switch (opt) {
-                        case 'h':
-                                home = optarg;
-                                break;
-                        case 'g':
-                                gecos = optarg;
-                                break;
-                        case 's':
-                                shell = optarg;
-                                break;
-                        default:
-                                bb_show_usage();
-                                break;
-                }
+        bb_getopt_ulflags(argc, argv, "h:g:s:", &home, &gecos, &shell);
 
         /* got root? */
-        if (i_am_not_root()) {
-                bb_error_msg_and_die( "Only root may add a user or group to the system.");
-        }
+        if_i_am_not_root();
 
         /* get login */
         if (optind >= argc) {
@@ -288,5 +274,3 @@ int adduser_main(int argc, char **argv)
         /* grand finale */
         return adduser(bb_path_passwd_file, &pw);
 }
-
-/* $Id: adduser.c,v 1.5 2003/03/19 09:12:20 mjn3 Exp $ */