source3/lib/cmdline_contexts.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    cmdline context wrapper.
   4
   5    Copyright (C) Christof Schmitt <cs@samba.org> 2018
   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 3 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, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "cmdline_contexts.h"
  22 #include "includes.h"
  23 #include "messages.h"
  24 #include "lib/global_contexts.h"
  25
  26 struct messaging_context *cmdline_messaging_context(const char *config_file)
  27 {
  28         struct messaging_context *msg_ctx = NULL;
  29
  30         /*
  31          * Ensure that a config is loaded, in case the underlying
  32          * messaging_init needs to create directories or sockets.
  33          */
  34         if (!lp_loaded()) {
  35                 if (!lp_load_initial_only(config_file)) {
  36                         return NULL;
  37                 }
  38         }
  39
  40         /*
  41          * Clustered Samba can only work as root due to required
  42          * access to the registry and ctdb, which in turn requires
  43          * messaging access as root.
  44          */
  45         if (lp_clustering() && geteuid() != 0) {
  46                 fprintf(stderr, "Cluster mode requires running as root.\n");
  47                 exit(1);
  48         }
  49
  50         msg_ctx = global_messaging_context();
  51         if (msg_ctx == NULL) {
  52                 if (geteuid() == 0) {
  53                         fprintf(stderr,
  54                                 "Unable to initialize messaging context!\n");
  55                         exit(1);
  56                 } else {
  57                         /*
  58                          * Non-cluster, non-root: Log error, but leave
  59                          * it up to the caller how to proceed.
  60                          */
  61                         DBG_NOTICE("Unable to initialize messaging context.\n");
  62                 }
  63         }
  64
  65         return msg_ctx;
  66 }
  67
  68 void cmdline_messaging_context_free(void)
  69 {
  70         global_messaging_context_free();
  71 }