release/src/router/busybox/coreutils/whoami.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini whoami implementation for busybox
   4  *
   5  * Copyright (C) 2000  Edward Betts <edward@debian.org>.
   6  *
   7  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   8  */
   9
  10 /* BB_AUDIT SUSv3 N/A -- Matches GNU behavior. */
  11
  12 //usage:#define whoami_trivial_usage
  13 //usage:       ""
  14 //usage:#define whoami_full_usage "\n\n"
  15 //usage:       "Print the user name associated with the current effective user id"
  16
  17 #include "libbb.h"
  18
  19 /* This is a NOFORK applet. Be very careful! */
  20
  21 int whoami_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  22 int whoami_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
  23 {
  24         if (argv[1])
  25                 bb_show_usage();
  26
  27         /* Will complain and die if username not found */
  28         puts(xuid2uname(geteuid()));
  29
  30         return fflush_all();
  31 }