src/main/update.c

   1 /*
   2  * dpkg - main program for package management
   3  * update.c - options which update the ‘available’ database
   4  *
   5  * Copyright © 1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
   6  *
   7  * This 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 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, see <https://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22 #include <compat.h>
  23
  24 #include <errno.h>
  25 #include <string.h>
  26 #include <unistd.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29
  30 #include <dpkg/i18n.h>
  31 #include <dpkg/dpkg.h>
  32 #include <dpkg/dpkg-db.h>
  33 #include <dpkg/options.h>
  34
  35 #include "main.h"
  36
  37 int
  38 updateavailable(const char *const *argv)
  39 {
  40   const char *sourcefile= argv[0];
  41   char *availfile;
  42   int count= 0;
  43
  44   modstatdb_init();
  45
  46   switch (cipaction->arg_int) {
  47   case act_avclear:
  48     if (sourcefile) badusage(_("--%s takes no arguments"),cipaction->olong);
  49     break;
  50   case act_avreplace: case act_avmerge:
  51     if (sourcefile == NULL)
  52       sourcefile = "-";
  53     else if (argv[1])
  54       badusage(_("--%s takes at most one Packages-file argument"),
  55                cipaction->olong);
  56     break;
  57   default:
  58     internerr("unknown action '%d'", cipaction->arg_int);
  59   }
  60
  61   if (!f_noact) {
  62     const char *dbdir = dpkg_db_get_dir();
  63
  64     if (access(dbdir, W_OK)) {
  65       if (errno != EACCES)
  66         ohshite(_("unable to access dpkg database directory '%s' for bulk available update"),
  67                 dbdir);
  68       else
  69         ohshit(_("required write access to dpkg database directory '%s' for bulk available update"),
  70                dbdir);
  71     }
  72     modstatdb_lock();
  73   }
  74
  75   switch (cipaction->arg_int) {
  76   case act_avreplace:
  77     printf(_("Replacing available packages info, using %s.\n"),sourcefile);
  78     break;
  79   case act_avmerge:
  80     printf(_("Updating available packages info, using %s.\n"),sourcefile);
  81     break;
  82   case act_avclear:
  83     break;
  84   default:
  85     internerr("unknown action '%d'", cipaction->arg_int);
  86   }
  87
  88   availfile = dpkg_db_get_path(AVAILFILE);
  89
  90   if (cipaction->arg_int == act_avmerge)
  91     parsedb(availfile, pdb_parse_available, NULL);
  92
  93   if (cipaction->arg_int != act_avclear)
  94     count += parsedb(sourcefile,
  95                      pdb_parse_available | pdb_ignoreolder | pdb_dash_is_stdin,
  96                      NULL);
  97
  98   if (!f_noact) {
  99     writedb(availfile, wdb_dump_available);
 100     modstatdb_unlock();
 101   }
 102
 103   free(availfile);
 104
 105   if (cipaction->arg_int != act_avclear)
 106     printf(P_("Information about %d package was updated.\n",
 107               "Information about %d packages was updated.\n", count), count);
 108
 109   modstatdb_done();
 110
 111   return 0;
 112 }
 113
 114 int
 115 forgetold(const char *const *argv)
 116 {
 117   if (*argv)
 118     badusage(_("--%s takes no arguments"), cipaction->olong);
 119
 120   warning(_("obsolete '--%s' option; unavailable packages are automatically cleaned up"),
 121           cipaction->olong);
 122
 123   return 0;
 124 }