/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (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 2004 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * 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 */ }; static struct modldrv modldrv = { &mod_driverops, "blacklist driver %I%", &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)); }