2 Unix SMB/CIFS implementation.
4 process model: standard (1 process per client connection)
6 Copyright (C) Andrew Tridgell 1992-2005
7 Copyright (C) James J Myers 2003 <myersjj@samba.org>
8 Copyright (C) Stefan (metze) Metzmacher 2004
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.
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.
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.
27 #include "dlinklist.h"
28 #include "smb_server/smb_server.h"
31 called when the process model is selected
33 static void standard_model_init(struct event_context *ev)
35 signal(SIGCHLD, SIG_IGN);
39 called when a listening socket becomes readable.
41 static void standard_accept_connection(struct event_context *ev,
42 struct socket_context *sock,
43 void (*new_conn)(struct event_context *, struct socket_context *,
48 struct socket_context *sock2;
50 struct event_context *ev2;
52 /* accept an incoming connection. */
53 status = socket_accept(sock, &sock2);
54 if (!NT_STATUS_IS_OK(status)) {
55 DEBUG(0,("standard_accept_connection: accept: %s\n",
63 /* parent or error code ... */
65 /* go back to the event loop */
69 /* This is now the child code. We need a completely new event_context to work with */
70 ev2 = event_context_init(NULL);
72 /* the service has given us a private pointer that
73 encapsulates the context it needs for this new connection -
74 everything else will be freed */
75 talloc_steal(ev2, private);
76 talloc_steal(private, sock2);
78 /* this will free all the listening sockets and all state that
79 is not associated with this new connection */
83 /* we don't care if the dup fails, as its only a select()
87 /* tdb needs special fork handling */
88 if (tdb_reopen_all() == -1) {
89 DEBUG(0,("standard_accept_connection: tdb_reopen_all failed.\n"));
92 /* Ensure that the forked children do not expose identical random streams */
93 set_need_random_reseed();
95 /* setup this new connection */
96 new_conn(ev2, sock2, getpid(), private);
98 /* we can't return to the top level here, as that event context is gone,
99 so we now process events in the new event context until there are no
101 event_loop_wait(ev2);
108 called to create a new server task
110 static void standard_new_task(struct event_context *ev,
111 void (*new_task)(struct event_context *, uint32_t , void *),
115 struct event_context *ev2;
120 /* parent or error code ... go back to the event loop */
124 /* This is now the child code. We need a completely new event_context to work with */
125 ev2 = event_context_init(NULL);
127 /* the service has given us a private pointer that
128 encapsulates the context it needs for this new connection -
129 everything else will be freed */
130 talloc_steal(ev2, private);
132 /* this will free all the listening sockets and all state that
133 is not associated with this new connection */
136 /* tdb needs special fork handling */
137 if (tdb_reopen_all() == -1) {
138 DEBUG(0,("standard_accept_connection: tdb_reopen_all failed.\n"));
141 /* Ensure that the forked children do not expose identical random streams */
142 set_need_random_reseed();
144 /* setup this new connection */
145 new_task(ev2, getpid(), private);
147 /* we can't return to the top level here, as that event context is gone,
148 so we now process events in the new event context until there are no
150 event_loop_wait(ev2);
157 /* called when a task goes down */
158 static void standard_terminate(struct event_context *ev, const char *reason)
160 DEBUG(2,("standard_terminate: reason[%s]\n",reason));
162 /* this init_iconv() has the effect of freeing the iconv context memory,
163 which makes leak checking easier */
166 /* the secrets db should really hang off the connection structure */
171 /* terminate this process */
176 static const struct model_ops standard_ops = {
178 .model_init = standard_model_init,
179 .accept_connection = standard_accept_connection,
180 .new_task = standard_new_task,
181 .terminate = standard_terminate,
185 initialise the standard process model, registering ourselves with the process model subsystem
187 NTSTATUS process_model_standard_init(void)
189 return register_process_model(&standard_ops);