/* * click-uninstall.cc -- uninstall Click kernel module * Eddie Kohler * * Copyright (c) 1999-2000 Massachusetts Institute of Technology * Copyright (c) 2000 Mazu Networks, Inc. * Copyright (c) 2002 International Computer Science Institute * Copyright (c) 2008 Meraki, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, subject to the conditions * listed in the Click LICENSE file. These conditions include: you must * preserve this copyright notice, and you cannot mention the copyright * holders in advertising related to the Software without their permission. * The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This * notice is a summary of the Click LICENSE file; the license in that file is * legally binding. */#include <click/config.h>#include "common.hh"#include "routert.hh"#include "lexert.hh"#include <click/error.hh>#include <click/confparse.hh>#include <click/driver.hh>#include <click/clp.h>#include "toolutils.hh"#include <stdio.h>#include <stdlib.h>#include <string.h>#include <ctype.h>#include <errno.h>#include <unistd.h>#include <sys/time.h>#define HELP_OPT		300#define VERSION_OPT		301#define VERBOSE_OPT		302static const Clp_Option options[] = {  { "help", 0, HELP_OPT, 0, 0 },  { "verbose", 'V', VERBOSE_OPT, 0, Clp_Negate },  { "version", 'v', VERSION_OPT, 0, 0 },};static const char *program_name;voidshort_usage(){  fprintf(stderr, "Usage: %s [OPTION]...\n\Try '%s --help' for more information.\n",	  program_name, program_name);}voidusage(){  printf("\'Click-uninstall' uninstalls Click from the current Linux kernel.\n\\n\Usage: %s [OPTION]...\n\\n\Options:\n\  -V, --verbose            Print information about uninstallation process.\n\      --help               Print this message and exit.\n\  -v, --version            Print version number and exit.\n\\n\Report bugs to <click@pdos.lcs.mit.edu>.\n", program_name);}intmain(int argc, char **argv){  click_static_initialize();  CLICK_DEFAULT_PROVIDES;  ErrorHandler *errh = new PrefixErrorHandler(ErrorHandler::default_handler(), "click-uninstall: ");  // read command line arguments  Clp_Parser *clp =    Clp_NewParser(argc, argv, sizeof(options) / sizeof(options[0]), options);  Clp_SetOptionChar(clp, '+', Clp_ShortNegated);  program_name = Clp_ProgramName(clp);  while (1) {    int opt = Clp_Next(clp);    switch (opt) {     case VERBOSE_OPT:      verbose = !clp->negated;      break;     case HELP_OPT:      usage();      exit(0);      break;     case VERSION_OPT:      printf("click-uninstall (Click) %s\n", CLICK_VERSION);      printf("Copyright (c) 2000 Massachusetts Institute of Technology\n\Copyright (c) 2000-2002 Mazu Networks, Inc.\n\Copyright (c) 2000-2002 International Computer Science Institute\n\This is free software; see the source for copying conditions.\n\There is NO warranty, not even for merchantability or fitness for a\n\particular purpose.\n");      exit(0);      break;     case Clp_NotOption:     case Clp_BadOption:      short_usage();      exit(1);      break;     case Clp_Done:      goto done;    }  } done:  return (unload_click(errh) >= 0 ? 0 : 1);}