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/*
Unix SMB/CIFS implementation.
run s3 file server within Samba4
Copyright (C) Andrew Tridgell 2011
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "talloc.h"
#include "tevent.h"
#include "system/filesys.h"
#include "lib/param/param.h"
#include "source4/samba/service.h"
#include "source4/samba/process_model.h"
#include "dynconfig.h"
#include "nsswitch/winbind_client.h"
/*
called if smbd exits
*/
static void file_server_smbd_done(struct tevent_req *subreq)
{
struct task_server *task =
tevent_req_callback_data(subreq,
struct task_server);
int sys_errno;
int ret;
ret = samba_runcmd_recv(subreq, &sys_errno);
if (ret != 0) {
DEBUG(0,("file_server smbd daemon died with exit status %d\n", sys_errno));
} else {
DEBUG(0,("file_server smbd daemon exited normally\n"));
}
task_server_terminate(task, "smbd child process exited", true);
}
/*
startup a copy of smbd as a child daemon
*/
static NTSTATUS s3fs_task_init(struct task_server *task)
{
struct tevent_req *subreq;
const char *smbd_path;
const char *smbd_cmd[2] = { NULL, NULL };
const char *config_file = "";
task_server_set_title(task, "task[s3fs_parent]");
smbd_path = talloc_asprintf(task, "%s/smbd", dyn_SBINDIR);
if (smbd_path == NULL) {
return NT_STATUS_NO_MEMORY;
}
smbd_cmd[0] = smbd_path;
if (!is_default_dyn_CONFIGFILE()) {
config_file = talloc_asprintf(task,
"--configfile=%s",
get_dyn_CONFIGFILE());
if (config_file == NULL) {
return NT_STATUS_NO_MEMORY;
}
}
/* the child should be able to call through nss_winbind */
(void)winbind_on();
/* start it as a child process */
subreq = samba_runcmd_send(task, task->event_ctx, timeval_zero(), 1, 0,
smbd_cmd,
"-D",
"--option=server role check:inhibit=yes",
"--foreground",
config_file,
debug_get_output_is_stdout()?"--debug-stdout":NULL,
NULL);
/* the parent should not be able to call through nss_winbind */
if (!winbind_off()) {
DEBUG(0,("Failed to re-disable recursive winbindd calls after forking smbd\n"));
task_server_terminate(task, "Failed to re-disable recursive winbindd calls", true);
return NT_STATUS_UNSUCCESSFUL;
}
if (subreq == NULL) {
DEBUG(0, ("Failed to start smbd as child daemon\n"));
task_server_terminate(task, "Failed to startup s3fs smb task", true);
return NT_STATUS_UNSUCCESSFUL;
}
tevent_req_set_callback(subreq, file_server_smbd_done, task);
DEBUG(5,("Started file server child smbd\n"));
return NT_STATUS_OK;
}
/* called at smbd startup - register ourselves as a server service */
NTSTATUS server_service_s3fs_init(TALLOC_CTX *);
NTSTATUS server_service_s3fs_init(TALLOC_CTX *ctx)
{
struct service_details details = {
.inhibit_fork_on_accept = true,
.inhibit_pre_fork = true,
.task_init = s3fs_task_init,
.post_fork = NULL
};
return register_server_service(ctx, "s3fs", &details);
}
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