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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*
* Copyright 2018 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Functions called by the IO deamon (IOD).
* Here in the library to simplify testing.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <libintl.h>
#include <sys/byteorder.h>
#include <sys/types.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <netsmb/smb.h>
#include <netsmb/smb_lib.h>
#include <netsmb/netbios.h>
#include <netsmb/nb_lib.h>
#include <netsmb/smb_dev.h>
#include "charsets.h"
#include "private.h"
/*
* The user agent (smbiod) calls smb_iod_connect for the first
* connection to some server, and if that succeeds, will start a
* thread running this function, passing the smb_ctx_t
*
* This thread now enters the driver and stays there, reading
* network responses as long as the connection is alive.
*/
int
smb_iod_work(smb_ctx_t *ctx)
{
smbioc_ssn_work_t *work = &ctx->ct_work;
int err = 0;
DPRINT("server: %s", ctx->ct_srvname);
/*
* This is the reader / reconnect loop.
*
* We could start with state "idle", but
* we know someone wants a connection to
* this server, so start in "vcactive".
*
* XXX: Add some syslog calls in here?
*/
for (;;) {
DPRINT("state: %s",
smb_iod_state_name(work->wk_out_state));
switch (work->wk_out_state) {
case SMBIOD_ST_IDLE:
/*
* Wait for driver requests to arrive
* for this VC, then return here.
* Next state is normally RECONNECT.
*/
DPRINT("Call _ioc_idle...");
if (nsmb_ioctl(ctx->ct_dev_fd,
SMBIOC_IOD_IDLE, work) == -1) {
err = errno;
DPRINT("ioc_idle: err %d", err);
goto out;
}
DPRINT("Ret. from _ioc_idle");
continue;
case SMBIOD_ST_RECONNECT:
DPRINT("Call _iod_connect...");
err = smb_iod_connect(ctx);
if (err == 0)
continue;
DPRINT("iod_connect: err %d", err);
/*
* If the error was EAUTH, retry is
* not likely to succeed either, so
* just exit this thread. The user
* will need to run smbutil to get
* a new thread with new auth info.
*/
if (err == EAUTH) {
DPRINT("iod_connect: EAUTH (give up)");
goto out;
}
/*
* Reconnect failed. Notify any requests
* that we're not connected, and delay.
* Next state will be IDLE or RECONNECT.
*/
DPRINT("Call _iod_rcfail...");
if (nsmb_ioctl(ctx->ct_dev_fd,
SMBIOC_IOD_RCFAIL, work) == -1) {
err = errno;
DPRINT("iod_rcfail: err %d", err);
goto out;
}
continue;
case SMBIOD_ST_AUTHOK:
/*
* This is where we enter the driver and
* stay there. While the connection is up
* the VC will have SMBIOD_ST_VCACTIVE
*/
DPRINT("Call _iod_work...");
if (nsmb_ioctl(ctx->ct_dev_fd,
SMBIOC_IOD_WORK, work) == -1) {
err = errno;
DPRINT("iod_work: err %d", err);
goto out;
}
DPRINT("Ret. from _ioc_work");
continue;
case SMBIOD_ST_DEAD:
DPRINT("got state=DEAD");
err = 0;
goto out;
default:
DPRINT("Unexpected state: %d (%s)",
work->wk_out_state,
smb_iod_state_name(work->wk_out_state));
err = EFAULT;
goto out;
}
}
out:
if (ctx->ct_dev_fd != -1) {
nsmb_close(ctx->ct_dev_fd);
ctx->ct_dev_fd = -1;
}
return (err);
}
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