libsmbfs/smb/iod_wk.c

613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * CDDL HEADER START
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * The contents of this file are subject to the terms of the
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Common Development and Distribution License (the "License").
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * You may not use this file except in compliance with the License.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * or http://www.opensolaris.org/os/licensing.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * See the License for the specific language governing permissions
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * and limitations under the License.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * When distributing Covered Code, include this CDDL HEADER in each
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * If applicable, add the following below this CDDL HEADER, with the
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * fields enclosed by brackets "[]" replaced with your own identifying
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * information: Portions Copyright [yyyy] [name of copyright owner]
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * CDDL HEADER END
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
3d804dabd641ca3bac12a320ebf63c36c6f3eba0Gordon Ross * Copyright 2012 Nexenta Systems, Inc.  All rights reserved.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Use is subject to license terms.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Functions called by the IO deamon (IOD).
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Here in the library to simplify testing.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <errno.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <fcntl.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <stdio.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <string.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <stdlib.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <unistd.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <libintl.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/byteorder.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/types.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/fcntl.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/ioctl.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/time.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <sys/socket.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netinet/in.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netinet/tcp.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <arpa/inet.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/smb.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/smb_lib.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/netbios.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/nb_lib.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include <netsmb/smb_dev.h>
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include "charsets.h"
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross#include "private.h"
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross/*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross * Be the reader thread for this VC.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rossint
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rosssmb_iod_work(smb_ctx_t *ctx)
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross{
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    smbioc_ssn_work_t *work = &ctx->ct_work;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    int vcst, err = 0;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    DPRINT("server: %s", ctx->ct_srvname);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    /* Calle should have opened these */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    if (ctx->ct_tran_fd == -1 || ctx->ct_dev_fd == -1) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        err = EINVAL;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        goto out;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    /*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     * This is the reader / reconnect loop.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     * We could start with state "idle", but
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     * we know someone wants a connection to
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     * this server, so start in "vcactive".
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     *
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     * XXX: Add some syslog calls in here?
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross     */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    vcst = SMBIOD_ST_VCACTIVE;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    for (;;) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        switch (vcst) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        case SMBIOD_ST_IDLE:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            /*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * Wait for driver requests to arrive
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * for this VC, then return here.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * Next state is normally RECONNECT.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            DPRINT("state: idle");
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            if (ioctl(ctx->ct_dev_fd,
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                SMBIOC_IOD_IDLE, &vcst) == -1) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                err = errno;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                DPRINT("ioc_idle: err %d", err);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                goto out;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            continue;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        case SMBIOD_ST_RECONNECT:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            DPRINT("state: reconnect");
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            err = smb_iod_connect(ctx);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            if (err == 0) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                vcst = SMBIOD_ST_VCACTIVE;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                continue;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            DPRINT("_iod_connect: err %d", err);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            /*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * If the error was EAUTH, retry is
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * not likely to succeed either, so
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * just exit this thread.  The user
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * will need to run smbutil to get
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * a new thread with new auth info.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            if (err == EAUTH)
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                goto out;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            vcst = SMBIOD_ST_RCFAILED;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            continue;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        case SMBIOD_ST_RCFAILED:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            DPRINT("state: rcfailed");
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            /*
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * Reconnect failed.  Kill off any
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * requests waiting in the driver,
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * then get ready to try again.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             * Next state is normally IDLE.
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross             */
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            if (ioctl(ctx->ct_dev_fd,
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                SMBIOC_IOD_RCFAIL, &vcst) == -1) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                err = errno;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                DPRINT("ioc_rcfail: err %d", err);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                goto out;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            continue;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        case SMBIOD_ST_VCACTIVE:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            DPRINT("state: active");
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            if (ioctl(ctx->ct_dev_fd,
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                SMBIOC_IOD_WORK, work) == -1) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                err = errno;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                DPRINT("ioc_work: err %d", err);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross                goto out;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            vcst = work->wk_out_state;
3d804dabd641ca3bac12a320ebf63c36c6f3eba0Gordon Ross            /*
3d804dabd641ca3bac12a320ebf63c36c6f3eba0Gordon Ross             * Go ahead and close the transport now,
3d804dabd641ca3bac12a320ebf63c36c6f3eba0Gordon Ross             * rather than wait until reconnect to
3d804dabd641ca3bac12a320ebf63c36c6f3eba0Gordon Ross             * this server.
3d804dabd641ca3bac12a320ebf63c36c6f3eba0Gordon Ross             */
3d804dabd641ca3bac12a320ebf63c36c6f3eba0Gordon Ross            close(ctx->ct_tran_fd);
3d804dabd641ca3bac12a320ebf63c36c6f3eba0Gordon Ross            ctx->ct_tran_fd = -1;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            continue;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        case SMBIOD_ST_DEAD:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            DPRINT("state: dead");
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            err = 0;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            goto out;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        default:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            DPRINT("state: BAD(%d)", vcst);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            err = EFAULT;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross            goto out;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Rossout:
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    if (ctx->ct_tran_fd != -1) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        close(ctx->ct_tran_fd);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        ctx->ct_tran_fd = -1;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    if (ctx->ct_dev_fd != -1) {
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        close(ctx->ct_dev_fd);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross        ctx->ct_dev_fd = -1;
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    }
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross    return (err);
613a2f6ba31e891e3d947a356daf5e563d43c1ceGordon Ross}