source4/winbind/winbindd.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    run s3 winbindd server within Samba4
   5
   6    Copyright (C) Andrew Tridgell        2011
   7    Copyright (C) Andrew Bartlett        2014
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "talloc.h"
  25 #include "tevent.h"
  26 #include "system/filesys.h"
  27 #include "lib/param/param.h"
  28 #include "source4/samba/service.h"
  29 #include "source4/samba/process_model.h"
  30 #include "dynconfig.h"
  31 #include "nsswitch/winbind_client.h"
  32
  33 /*
  34   called if winbindd exits
  35  */
  36 static void winbindd_done(struct tevent_req *subreq)
  37 {
  38         struct task_server *task =
  39                 tevent_req_callback_data(subreq,
  40                 struct task_server);
  41         int sys_errno;
  42         int ret;
  43
  44         ret = samba_runcmd_recv(subreq, &sys_errno);
  45         if (ret != 0) {
  46                 DEBUG(0,("winbindd daemon died with exit status %d\n", sys_errno));
  47         } else {
  48                 DEBUG(0,("winbindd daemon exited normally\n"));
  49         }
  50         task_server_terminate(task, "winbindd child process exited", true);
  51 }
  52
  53
  54 /*
  55   startup a copy of winbindd as a child daemon
  56 */
  57 static NTSTATUS winbindd_task_init(struct task_server *task)
  58 {
  59         struct tevent_req *subreq;
  60         const char *winbindd_path;
  61         const char *winbindd_cmd[2] = { NULL, NULL };
  62         const char *config_file = "";
  63
  64         task_server_set_title(task, "task[winbindd_parent]");
  65
  66         winbindd_path = talloc_asprintf(task, "%s/winbindd", dyn_SBINDIR);
  67         if (winbindd_path == NULL) {
  68                 return NT_STATUS_NO_MEMORY;
  69         }
  70         winbindd_cmd[0] = winbindd_path;
  71
  72         if (!is_default_dyn_CONFIGFILE()) {
  73                 config_file = talloc_asprintf(task,
  74                                               "--configfile=%s",
  75                                               get_dyn_CONFIGFILE());
  76                 if (config_file == NULL) {
  77                         return NT_STATUS_NO_MEMORY;
  78                 }
  79         }
  80
  81         /* start it as a child process */
  82         subreq = samba_runcmd_send(task, task->event_ctx, timeval_zero(), 1, 0,
  83                                 winbindd_cmd,
  84                                 "-D",
  85                                 "--option=server role check:inhibit=yes",
  86                                 "--foreground",
  87                                 config_file,
  88                                 debug_get_output_is_stdout()?"--debug-stdout":NULL,
  89                                 NULL);
  90         if (subreq == NULL) {
  91                 DEBUG(0, ("Failed to start winbindd as child daemon\n"));
  92                 task_server_terminate(task, "Failed to startup winbindd task", true);
  93                 return NT_STATUS_UNSUCCESSFUL;
  94         }
  95
  96         tevent_req_set_callback(subreq, winbindd_done, task);
  97
  98         DEBUG(5,("Started winbindd as a child daemon\n"));
  99         return NT_STATUS_OK;
 100 }
 101
 102 /* called at winbindd startup - register ourselves as a server service */
 103 NTSTATUS server_service_winbindd_init(TALLOC_CTX *);
 104
 105 NTSTATUS server_service_winbindd_init(TALLOC_CTX *ctx)
 106 {
 107         static const struct service_details details = {
 108                 .inhibit_fork_on_accept = true,
 109                 .inhibit_pre_fork = true,
 110                 .task_init = winbindd_task_init,
 111                 .post_fork = NULL
 112         };
 113
 114         NTSTATUS status = register_server_service(ctx, "winbindd", &details);
 115         if (!NT_STATUS_IS_OK(status)) {
 116                 return status;
 117         }
 118         return register_server_service(ctx, "winbind", &details);
 119 }