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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 (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/*
* Client-side interface to the IO Daemon (IOD)
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#include <libintl.h>
#include <door.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_lib.h>
#include <netsmb/netbios.h>
#include <netsmb/nb_lib.h>
#include <netsmb/smb_dev.h>
#include <assert.h>
#include "charsets.h"
#include "private.h"
/*
* This is constant for the life of a process,
* and initialized at startup, so no locks.
*/
static char door_path[64];
static int iod_start_timeout = 10; /* seconds */
char *
smb_iod_door_path(void)
{
uid_t uid;
int x;
if (door_path[0] == '\0') {
uid = getuid();
x = snprintf(door_path, sizeof (door_path),
SMBIOD_USR_DOOR, uid);
assert(x <= sizeof (door_path));
}
return (door_path);
}
/*
* Open the door (client side) and
* find out if the service is there.
*/
int
smb_iod_open_door(int *fdp)
{
door_arg_t da;
char *path;
int fd, rc;
int err = 0;
path = smb_iod_door_path();
fd = open(path, O_RDONLY, 0);
if (fd < 0)
return (errno);
/*
* Make sure the IOD is running.
* Pass NULL args.
*/
memset(&da, 0, sizeof (da));
da.rbuf = (void *) &err;
da.rsize = sizeof (err);
rc = door_call(fd, &da);
if (rc < 0) {
err = errno;
close(fd);
return (err);
}
if (err != 0) {
close(fd);
return (err);
}
/* This handle controls per-process resources. */
(void) fcntl(fd, F_SETFD, FD_CLOEXEC);
*fdp = fd;
return (0);
}
/*
* Request the creation of our per-user smbiod
* via door call to the "main" IOD service.
*/
static int
start_iod(void)
{
const char *svc_door = SMBIOD_SVC_DOOR;
door_arg_t da;
int32_t cmd, err;
int fd, rc;
fd = open(svc_door, O_RDONLY, 0);
if (fd < 0) {
err = errno;
DPRINT("%s: open failed, err %d", svc_door, err);
return (err);
}
cmd = SMBIOD_START;
memset(&da, 0, sizeof (da));
da.data_ptr = (void *) &cmd;
da.data_size = sizeof (cmd);
da.rbuf = (void *) &err;
da.rsize = sizeof (err);
rc = door_call(fd, &da);
close(fd);
if (rc < 0) {
err = errno;
DPRINT("door_call, err %d", err);
return (err);
}
return (err);
}
/*
* Get a door handle to the IOD, starting it if necessary.
* On success, sets ctx->ct_door_fd
*/
int
smb_iod_start(smb_ctx_t *ctx)
{
int err, tmo;
int fd = -1;
tmo = iod_start_timeout;
while ((err = smb_iod_open_door(&fd)) != 0) {
if (--tmo <= 0)
goto errout;
/*
* We have no per-user IOD yet. Request one.
* Do this request every time through the loop
* because the master IOD will only start our
* per-user IOD if we don't have one, and our
* first requst could have happened while we
* had an IOD that was doing shutdown.
* (Prevents a shutdown/startup race).
*/
err = start_iod();
if (err != 0)
goto errout;
/*
* Wait for it to get ready.
*/
(void) sleep(1);
}
/* Save the door fd. */
if (ctx->ct_door_fd != -1)
close(ctx->ct_door_fd);
ctx->ct_door_fd = fd;
return (0);
errout:
smb_error(dgettext(TEXT_DOMAIN,
"Could not contact service: %s"),
0, "svc:/network/smb/client");
return (ENOTACTIVE);
}
/*
* Ask the IOD to connect using the info in ctx.
* Called by newvc.
*/
int
smb_iod_cl_newvc(smb_ctx_t *ctx)
{
door_arg_t da;
int err = 0;
/* Should already have the IOD door. */
if (ctx->ct_door_fd < 0)
return (EINVAL);
da.data_ptr = (void *) &ctx->ct_iod_ssn;
da.data_size = sizeof (ctx->ct_iod_ssn);
da.desc_ptr = NULL;
da.desc_num = 0;
da.rbuf = (void *) &err;
da.rsize = sizeof (err);
if (door_call(ctx->ct_door_fd, &da) < 0) {
err = errno;
DPRINT("door_call, err=%d", err);
}
return (err);
}
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