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/*
Unix SMB/CIFS implementation.
process model: standard (1 process per client connection)
Copyright (C) Andrew Tridgell 1992-2003
Copyright (C) James J Myers 2003 <myersjj@samba.org>
Copyright (C) Stefan (metze) Metzmacher 2004
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
/*
called when the process model is selected
*/
static void standard_model_startup(void)
{
signal(SIGCHLD, SIG_IGN);
smbd_process_init();
}
/*
called when a listening socket becomes readable
*/
static void standard_accept_connection(struct event_context *ev, struct fd_event *srv_fde,
time_t t, uint16_t flags)
{
NTSTATUS status;
struct socket_context *sock;
struct server_socket *server_socket = srv_fde->private;
struct server_connection *conn;
pid_t pid;
/* accept an incoming connection. */
status = socket_accept(server_socket->socket, &sock);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("standard_accept_connection: accept: %s\n",
nt_errstr(status)));
return;
}
pid = fork();
if (pid != 0) {
/* parent or error code ... */
socket_destroy(sock);
/* go back to the event loop */
return;
}
/* Child code ... */
/* close all the listening sockets */
service_close_listening_sockets(server_socket->service->srv_ctx);
/* we don't care if the dup fails, as its only a select()
speed optimisation */
socket_dup(sock);
/* tdb needs special fork handling */
if (tdb_reopen_all() == -1) {
DEBUG(0,("standard_accept_connection: tdb_reopen_all failed.\n"));
}
/* Ensure that the forked children do not expose identical random streams */
set_need_random_reseed();
conn = server_setup_connection(ev, server_socket, sock, t, getpid());
if (!conn) {
DEBUG(0,("server_setup_connection(ev, server_socket, sock, t) failed\n"));
return;
}
talloc_steal(conn, sock);
DLIST_ADD(server_socket->connection_list,conn);
/* return to the event loop */
}
/* called when a SMB connection goes down */
static void standard_terminate_connection(struct server_connection *conn, const char *reason)
{
DEBUG(2,("standard_terminate_connection: reason[%s]\n",reason));
if (conn) {
talloc_free(conn->service->srv_ctx);
}
/* this init_iconv() has the effect of freeing the iconv context memory,
which makes leak checking easier */
init_iconv();
/* the secrets db should really hang off the connection structure */
secrets_shutdown();
/* terminate this process */
exit(0);
}
static int standard_get_id(struct smbsrv_request *req)
{
return (int)req->smb_conn->pid;
}
static void standard_exit_server(struct server_context *srv_ctx, const char *reason)
{
DEBUG(1,("standard_exit_server: reason[%s]\n",reason));
}
/*
initialise the standard process model, registering ourselves with the process model subsystem
*/
NTSTATUS process_model_standard_init(void)
{
NTSTATUS ret;
struct model_ops ops;
ZERO_STRUCT(ops);
/* fill in our name */
ops.name = "standard";
/* fill in all the operations */
ops.model_startup = standard_model_startup;
ops.accept_connection = standard_accept_connection;
ops.terminate_connection = standard_terminate_connection;
ops.exit_server = standard_exit_server;
ops.get_id = standard_get_id;
/* register ourselves with the PROCESS_MODEL subsystem. */
ret = register_backend("process_model", &ops);
if (!NT_STATUS_IS_OK(ret)) {
DEBUG(0,("Failed to register process_model 'standard'!\n"));
return ret;
}
return ret;
}
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