sysevent.c revision f6e214c7418f43af38bd8c3a557e3d0a1d311cfa
/*
* 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
* 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
*/
/*
*/
/*
* Sysevent Driver for GPEC
*/
#include <sys/sysevent.h>
#include <sys/sysevent_impl.h>
static dev_info_t *sysevent_devi;
/* Definitions for binding handle array */
static kmutex_t sysevent_minor_mutex;
/*
* evchan_ctl acts as a container for the binding handle
*/
typedef struct evchan_ctl {
} evchan_ctl_t;
static void *evchan_ctlp;
/*
* Check if it's a null terminated array - to avoid DoS attack
* It is supposed that string points to an array with
* a minimum length of len. len must be strlen + 1.
* Checks for printable characters are already done in library.
*/
static int
{
/* Return 0 if string has length of zero */
if (len > 0) {
} else {
return (0);
}
}
/*
* Following sysevent_minor_* routines map
* a binding handle (evchan_t *) to a minor number
* Has to be called w/ locks held.
*/
static ulong_t *
sysevent_minor_alloc(void)
{
/* Increase bitmap by one BT_NBIPUL */
}
if (bhst != &sysevent_bitmap_initial)
return (sysevent_minor_bitmap);
}
static void
{
if (bitmap != &sysevent_bitmap_initial)
}
static index_t
sysevent_minor_get(void)
{
/* Search for an available index */
sysevent_minor_bits)) == -1) {
/* All busy - allocate additional binding handle bitmap space */
/* Reached our maximum of id's == SHRT_MAX */
return (0);
} else {
}
}
return (idx);
}
static void
{
}
static void
sysevent_minor_init(void)
{
}
/* ARGSUSED */
static int
{
int km_flags;
return (ENXIO);
return (EFAULT);
/*
* This limits the size of an event
*/
return (EOVERFLOW);
/*
* Check for valid uargs.flags
*/
return (EINVAL);
/*
* Check that at least one of EVCH_NOSLEEP or EVCH_SLEEP is
* specified
*/
return (EINVAL);
return (EFAULT);
}
/* Event will be freed internally */
}
/*
* sysevent_chan_open - used to open a channel in the GPEC channel layer
*/
/* ARGSUSED */
static int
{
char *chan_name;
int ec;
return (ENXIO);
}
return (EFAULT);
return (EINVAL);
return (EFAULT);
}
return (EINVAL);
}
/*
* Check of uargs.flags and uargs.perms just to avoid DoS attacks.
* libsysevent does this carefully
*/
if (ec != 0) {
return (ec);
}
return (0);
}
/* ARGSUSED */
static int
{
int rc;
return (ENXIO);
return (EFAULT);
case EVCH_GET_CHAN_LEN:
case EVCH_GET_CHAN_LEN_MAX:
if (rc == 0) {
sizeof (sev_control_args_t)) != 0) {
}
}
break;
case EVCH_SET_CHAN_LEN:
break;
default:
}
return (rc);
}
/* ARGSUSED */
static int
{
char *sid;
char *class_info = NULL;
int rc;
return (ENXIO);
return (EFAULT);
return (EINVAL);
return (EFAULT);
}
return (EINVAL);
}
/* If class string empty then class EC_ALL is assumed */
return (EFAULT);
}
return (EINVAL);
}
}
/*
* Check of uargs.flags just to avoid DoS attacks
* libsysevent does this carefully.
*/
return (rc);
}
/* ARGSUSED */
static int
{
char *sid;
return (EFAULT);
return (ENXIO);
return (EINVAL);
/* Unsubscribe for all */
return (0);
}
return (EFAULT);
}
return (0);
}
/* ARGSUSED */
static int
{
char *buf;
int len;
int rc = 0;
return (EFAULT);
return (EINVAL);
}
if (rc == 0) {
}
}
return (rc);
}
/* ARGSUSED */
static int
{
char *channel;
char *buf;
int len;
int rc = 0;
return (EFAULT);
return (EINVAL);
return (EFAULT);
}
return (EINVAL);
}
if (len == 0) {
} else if (len == -1) {
}
if (rc == 0) {
}
}
return (rc);
}
/* ARGSUSED */
static int
{
char *buf;
return (ENXIO);
return (EFAULT);
if (bufsz == 0)
return (EINVAL);
if (bufsz > EVCH_MAX_DATA_SIZE)
return (EOVERFLOW);
bufsz) != 0 ||
return (EFAULT);
}
return (EINVAL);
}
return (0);
}
/* ARGSUSED */
static int
{
int rc;
return (ENXIO);
return (EFAULT);
return (rc);
return (EINVAL);
}
if (reqsz > EVCH_MAX_DATA_SIZE) {
return (E2BIG);
}
reqsz) != 0) {
return (EFAULT);
}
rc = 0;
} else {
}
} else {
rc = 0;
}
return (rc);
}
/*ARGSUSED*/
static int
{
int rc;
switch (cmd) {
case SEV_PUBLISH:
break;
case SEV_CHAN_OPEN:
break;
case SEV_CHAN_CONTROL:
break;
case SEV_SUBSCRIBE:
break;
case SEV_UNSUBSCRIBE:
break;
case SEV_CHANNAMES:
break;
case SEV_CHANDATA:
break;
case SEV_SETPROPNVL:
break;
case SEV_GETPROPNVL:
break;
default:
}
return (rc);
}
/*ARGSUSED*/
static int
{
int minor;
return (EINVAL);
return (ENXIO);
minor = sysevent_minor_get();
if (minor == 0)
/* All minors are busy */
return (EBUSY);
!= DDI_SUCCESS) {
return (ENOMEM);
}
return (0);
}
/*ARGSUSED*/
static int
{
return (EINVAL);
return (ENXIO);
}
/* Release all non-persistant subscriptions */
}
return (0);
}
/* ARGSUSED */
static int
{
switch (infocmd) {
case DDI_INFO_DEVT2DEVINFO:
*result = sysevent_devi;
return (DDI_SUCCESS);
case DDI_INFO_DEVT2INSTANCE:
*result = 0;
return (DDI_SUCCESS);
}
return (DDI_FAILURE);
}
/* ARGSUSED */
static int
{
if (cmd != DDI_ATTACH) {
return (DDI_FAILURE);
}
return (DDI_FAILURE);
}
return (DDI_SUCCESS);
}
static int
{
if (cmd != DDI_DETACH) {
return (DDI_FAILURE);
}
return (DDI_SUCCESS);
}
static struct cb_ops sysevent_cb_ops = {
sysevent_open, /* open */
sysevent_close, /* close */
nodev, /* strategy */
nodev, /* print */
nodev, /* dump */
nodev, /* read */
nodev, /* write */
sysevent_ioctl, /* ioctl */
nodev, /* devmap */
nodev, /* mmap */
nodev, /* segmap */
nochpoll, /* poll */
ddi_prop_op, /* prop_op */
0, /* streamtab */
NULL, /* aread */
NULL /* awrite */
};
static struct dev_ops sysevent_ops = {
DEVO_REV, /* devo_rev */
0, /* refcnt */
sysevent_info, /* info */
nulldev, /* identify */
nulldev, /* probe */
sysevent_attach, /* attach */
sysevent_detach, /* detach */
nodev, /* reset */
&sysevent_cb_ops, /* driver operations */
(struct bus_ops *)0, /* no bus operations */
nulldev, /* power */
ddi_quiesce_not_needed, /* quiesce */
};
};
static struct modlinkage modlinkage = {
};
int
_init(void)
{
int s;
if (s != 0)
return (s);
if ((s = mod_install(&modlinkage)) != 0)
return (s);
}
int
_fini(void)
{
int s;
if ((s = mod_remove(&modlinkage)) != 0)
return (s);
return (s);
}
int
{
}