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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.
*/
/*
* 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 "charsets.h"
#include "private.h"
static const char smbiod_path[] = "/usr/lib/smbfs/smbiod";
/*
* This is constant for the life of a process,
* and initialized at startup, so no locks.
*/
static char door_path[40];
static int iod_start_timeout = 10; /* seconds */
char *
smb_iod_door_path(void)
{
static const char fmtR[] = "/var/run/smbiod-%d";
static const char fmtU[] = "/tmp/.smbiod-%d";
const char *fmt;
uid_t uid;
if (door_path[0] == '\0') {
uid = getuid();
fmt = (uid == 0) ? fmtR : fmtU;
snprintf(door_path, sizeof (door_path), fmt, uid);
}
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);
}
/*
* Start the IOD (if not already running) and
* wait until its door service is ready.
* On success, sets ctx->ct_door_fd
*/
int
smb_iod_start(smb_ctx_t *ctx)
{
int err, pid, tmo;
int fd = -1;
err = smb_iod_open_door(&fd);
if (err == 0)
goto OK;
pid = vfork();
if (pid < 0)
return (errno);
/*
* child: start smbiod
*/
if (pid == 0) {
char *argv[2];
argv[0] = "smbiod";
argv[1] = NULL;
(void) execv(smbiod_path, argv);
_exit(1);
}
/*
* parent: wait for smbiod to start
*/
tmo = iod_start_timeout;
while (--tmo >= 0) {
(void) sleep(1);
err = smb_iod_open_door(&fd);
if (err == 0)
goto OK;
}
return (err);
OK:
/* Save the door fd. */
if (ctx->ct_door_fd != -1)
close(ctx->ct_door_fd);
ctx->ct_door_fd = fd;
return (0);
}
/*
* 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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