pkgrm.cc

   1 //
   2 //  pkgutils
   3 //
   4 //  Copyright (c) 2000-2005 Per Liden
   5 //  Copyright (c) 2006-2013 by CRUX team (http://crux.nu)
   6 //
   7 //  This program is free software; you can redistribute it and/or modify
   8 //  it under the terms of the GNU General Public License as published by
   9 //  the Free Software Foundation; either version 2 of the License, or
  10 //  (at your option) any later version.
  11 //
  12 //  This program is distributed in the hope that it will be useful,
  13 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 //  GNU General Public License for more details.
  16 //
  17 //  You should have received a copy of the GNU General Public License
  18 //  along with this program; if not, write to the Free Software
  19 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 //  USA.
  21 //
  22
  23 #include "pkgrm.h"
  24 #include <unistd.h>
  25
  26 void pkgrm::run(int argc, char** argv)
  27 {
  28         //
  29         // Check command line options
  30         //
  31         string o_package;
  32         string o_root;
  33
  34         for (int i = 1; i < argc; i++) {
  35                 string option(argv[i]);
  36                 if (option == "-r" || option == "--root") {
  37                         assert_argument(argv, argc, i);
  38                         o_root = argv[i + 1];
  39                         i++;
  40                 } else if (option[0] == '-' || !o_package.empty()) {
  41                         throw runtime_error("invalid option " + option);
  42                 } else {
  43                         o_package = option;
  44                 }
  45         }
  46
  47         if (o_package.empty())
  48                 throw runtime_error("option missing");
  49
  50         //
  51         // Check UID
  52         //
  53         if (getuid())
  54                 throw runtime_error("only root can remove packages");
  55
  56         //
  57         // Remove package
  58         //
  59         {
  60                 db_lock lock(o_root, true);
  61                 db_open(o_root);
  62
  63                 if (!db_find_pkg(o_package))
  64                         throw runtime_error("package " + o_package + " not installed");
  65
  66                 db_rm_pkg(o_package);
  67                 ldconfig();
  68                 db_commit();
  69         }
  70 }
  71
  72 void pkgrm::print_help() const
  73 {
  74         cout << "usage: " << utilname << " [options] <package>" << endl
  75              << "options:" << endl
  76              << "  -r, --root <path>   specify alternative installation root" << endl
  77              << "  -v, --version       print version and exit" << endl
  78              << "  -h, --help          print help and exit" << endl;
  79 }