blob: f12faed6d917cfac5cd26ccfdf12111888951fb0 [file] [log] [blame]
/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Blacklist special file
*/
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/stat.h>
#include <sys/modctl.h>
#include <sys/kmem.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/open.h>
#include <sys/policy.h>
#include <sys/fm/protocol.h>
#include <sys/bl.h>
static dev_info_t *bl_dip; /* private copy of devinfo pointer */
static int
bl_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
{
switch (cmd) {
case DDI_ATTACH:
break;
case DDI_RESUME:
return (DDI_SUCCESS);
default:
return (DDI_FAILURE);
}
if (ddi_create_minor_node(dip, ddi_get_name(dip), S_IFCHR,
ddi_get_instance(dip), DDI_PSEUDO, 0) != DDI_SUCCESS)
return (DDI_FAILURE);
bl_dip = dip;
return (DDI_SUCCESS);
}
/*ARGSUSED*/
static int
bl_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
{
switch (cmd) {
case DDI_DETACH:
break;
case DDI_SUSPEND:
return (DDI_SUCCESS);
default:
return (DDI_FAILURE);
}
ddi_remove_minor_node(bl_dip, NULL);
return (DDI_SUCCESS);
}
/*ARGSUSED*/
static int
bl_getinfo(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
{
int rc = DDI_SUCCESS;
switch (infocmd) {
case DDI_INFO_DEVT2DEVINFO:
*result = bl_dip;
break;
case DDI_INFO_DEVT2INSTANCE:
*result = (void *)(uintptr_t)getminor((dev_t)arg);
break;
default:
*result = NULL;
rc = DDI_FAILURE;
}
return (rc);
}
/*ARGSUSED*/
static int
bl_open(dev_t *devp, int flag, int otyp, struct cred *credp)
{
if (otyp != OTYP_CHR)
return (EINVAL);
if (secpolicy_blacklist(credp) != 0)
return (EPERM);
return (0);
}
/*ARGSUSED*/
static int
bl_ioctl(dev_t dev, int cmd, intptr_t data, int flag, cred_t *cred, int *rvalp)
{
bl_req_t blr;
nvlist_t *fmri;
const char *scheme;
char class[128];
char *buf;
int err;
#ifdef _SYSCALL32
if (get_udatamodel() != DATAMODEL_NATIVE) {
bl_req32_t blr32;
if (copyin((void *)data, &blr32, sizeof (bl_req32_t)) != 0)
return (EFAULT);
blr.bl_fmri = (caddr_t)(uintptr_t)blr32.bl_fmri;
blr.bl_fmrisz = blr32.bl_fmrisz;
blr.bl_class = (caddr_t)(uintptr_t)blr32.bl_class;
} else
#endif
{
if (copyin((void *)data, &blr, sizeof (bl_req_t)) != 0)
return (EFAULT);
}
if (blr.bl_fmri == NULL || blr.bl_fmrisz > BL_FMRI_MAX_BUFSIZE ||
blr.bl_class == NULL)
return (EINVAL);
if (copyinstr(blr.bl_class, class, sizeof (class), NULL) != 0)
return (EFAULT);
buf = kmem_zalloc(blr.bl_fmrisz, KM_SLEEP);
if (copyin(blr.bl_fmri, buf, blr.bl_fmrisz) != 0) {
kmem_free(buf, blr.bl_fmrisz);
return (EFAULT);
}
err = nvlist_unpack(buf, blr.bl_fmrisz, &fmri, KM_SLEEP);
kmem_free(buf, blr.bl_fmrisz);
if (err != 0)
return (err);
if (nvlist_lookup_string(fmri, FM_FMRI_SCHEME, (char **)&scheme) != 0) {
nvlist_free(fmri);
return (EINVAL);
}
switch (cmd) {
case BLIOC_INSERT:
case BLIOC_DELETE:
err = blacklist(cmd, scheme, fmri, class);
break;
default:
err = ENOTSUP;
}
nvlist_free(fmri);
return (err);
}
static struct cb_ops bl_cb_ops = {
bl_open, /* open */
nulldev, /* close */
nodev, /* strategy */
nodev, /* print */
nodev, /* dump */
nodev, /* read */
nodev, /* write */
bl_ioctl, /* ioctl */
nodev, /* devmap */
nodev, /* mmap */
nodev, /* segmap */
nochpoll, /* poll */
ddi_prop_op, /* cb_prop_op */
0, /* streamtab */
D_NEW | D_MP | D_64BIT /* Driver compatibility flag */
};
static struct dev_ops bl_ops = {
DEVO_REV, /* devo_rev */
0, /* devo_refcnt */
bl_getinfo, /* devo_getinfo */
nulldev, /* devo_identify */
nulldev, /* devo_probe */
bl_attach, /* devo_attach */
bl_detach, /* devo_detach */
nodev, /* devo_reset */
&bl_cb_ops, /* devo_cb_ops */
(struct bus_ops *)0, /* devo_bus_ops */
NULL, /* devo_power */
ddi_quiesce_not_needed, /* devo_quiesce */
};
static struct modldrv modldrv = {
&mod_driverops, "blacklist driver", &bl_ops,
};
static struct modlinkage modlinkage = {
MODREV_1, &modldrv, NULL
};
int
_init(void)
{
return (mod_install(&modlinkage));
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
int
_fini(void)
{
return (mod_remove(&modlinkage));
}