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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>
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 model_startup(void)
{
signal(SIGCHLD, SIG_IGN);
}
/*
called when a listening socket becomes readable
*/
static void accept_connection(struct event_context *ev, struct fd_event *fde, time_t t, uint16_t flags)
{
int accepted_fd;
struct sockaddr addr;
socklen_t in_addrlen = sizeof(addr);
pid_t pid;
struct model_ops *model_ops = fde->private;
accepted_fd = accept(fde->fd,&addr,&in_addrlen);
if (accepted_fd == -1) {
DEBUG(0,("accept_connection_standard: accept: %s\n",
strerror(errno)));
return;
}
pid = fork();
if (pid != 0) {
/* parent or error code ... */
close(accepted_fd);
/* go back to the event loop */
return;
}
/* Child code ... */
/* close all the listening sockets */
event_remove_fd_all_handler(ev, model_ops->accept_connection);
event_remove_fd_all_handler(ev, model_ops->accept_rpc_connection);
/* tdb needs special fork handling */
if (tdb_reopen_all() == -1) {
DEBUG(0,("accept_connection_standard: tdb_reopen_all failed.\n"));
}
/* Load DSO's */
init_modules();
/* initialize new process */
smbd_process_init();
init_smbsession(ev, model_ops, accepted_fd, smbd_read_handler);
/* return to the event loop */
}
/*
called when a rpc listening socket becomes readable
*/
static void accept_rpc_connection(struct event_context *ev, struct fd_event *fde, time_t t, uint16_t flags)
{
int accepted_fd;
struct sockaddr addr;
socklen_t in_addrlen = sizeof(addr);
pid_t pid;
accepted_fd = accept(fde->fd,&addr,&in_addrlen);
if (accepted_fd == -1) {
DEBUG(0,("accept_connection_standard: accept: %s\n",
strerror(errno)));
return;
}
pid = fork();
if (pid != 0) {
/* parent or error code ... */
close(accepted_fd);
/* go back to the event loop */
return;
}
/* Child code ... */
/* close all the listening sockets */
event_remove_fd_all_handler(ev, accept_connection);
event_remove_fd_all_handler(ev, accept_rpc_connection);
init_rpc_session(ev, fde->private, accepted_fd);
}
/* called when a SMB connection goes down */
static void terminate_connection(struct smbsrv_context *server, const char *reason)
{
server_terminate(server);
/* terminate this process */
exit(0);
}
/* called when a rpc connection goes down */
static void terminate_rpc_connection(void *r, const char *reason)
{
rpc_server_terminate(r);
/* terminate this process */
exit(0);
}
static int get_id(struct smbsrv_request *req)
{
return (int)req->smb_ctx->pid;
}
static void standard_exit_server(struct smbsrv_context *smb, 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 = model_startup;
ops.accept_connection = accept_connection;
ops.accept_rpc_connection = accept_rpc_connection;
ops.terminate_connection = terminate_connection;
ops.terminate_rpc_connection = terminate_rpc_connection;
ops.exit_server = standard_exit_server;
ops.get_id = 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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