source4/smbd/process_single.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    process model: process (1 process handles all client connections)
   5
   6    Copyright (C) Andrew Tridgell 2003
   7    Copyright (C) James J Myers 2003 <myersjj@samba.org>
   8    Copyright (C) Stefan (metze) Metzmacher 2004
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 */
  24
  25 #include "includes.h"
  26 #include "lib/events/events.h"
  27 #include "dlinklist.h"
  28 #include "smb_server/smb_server.h"
  29
  30
  31 /*
  32   called when the process model is selected
  33 */
  34 static void single_model_init(struct event_context *ev)
  35 {
  36 }
  37
  38 /*
  39   called when a listening socket becomes readable.
  40 */
  41 static void single_accept_connection(struct event_context *ev,
  42                                      struct socket_context *sock,
  43                                      void (*new_conn)(struct event_context *, struct socket_context *,
  44                                                       uint32_t , void *),
  45                                      void *private)
  46 {
  47         NTSTATUS status;
  48         struct socket_context *sock2;
  49
  50         /* accept an incoming connection. */
  51         status = socket_accept(sock, &sock2);
  52         if (!NT_STATUS_IS_OK(status)) {
  53                 DEBUG(0,("accept_connection_single: accept: %s\n", nt_errstr(status)));
  54                 return;
  55         }
  56
  57         talloc_steal(private, sock);
  58
  59         new_conn(ev, sock2, socket_get_fd(sock), private);
  60 }
  61
  62 /*
  63   called to startup a new task
  64 */
  65 static void single_new_task(struct event_context *ev,
  66                             void (*new_task)(struct event_context *, uint32_t, void *),
  67                             void *private)
  68 {
  69         static uint32_t taskid = 0x10000000;
  70         new_task(ev, taskid++, private);
  71 }
  72
  73
  74 /* called when a task goes down */
  75 static void single_terminate(struct event_context *ev, const char *reason)
  76 {
  77         DEBUG(2,("single_terminate: reason[%s]\n",reason));
  78 }
  79
  80 static const struct model_ops single_ops = {
  81         .name                   = "single",
  82         .model_init             = single_model_init,
  83         .new_task               = single_new_task,
  84         .accept_connection      = single_accept_connection,
  85         .terminate              = single_terminate,
  86 };
  87
  88 /*
  89   initialise the single process model, registering ourselves with the
  90   process model subsystem
  91  */
  92 NTSTATUS process_model_single_init(void)
  93 {
  94         return register_process_model(&single_ops);
  95 }