/* * Copyright (c) 2013 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include <kern/debug.h> #include <sys/param.h> #include <sys/mman.h> #include <sys/stat.h> #include <sys/sysctl.h> #include <sys/priv.h> #include <mach/machine.h> #include <libkern/libkern.h> #include <kern/assert.h> #include <pexpert/pexpert.h> #include <kern/ecc.h> static int get_ecc_data_handler(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req) { struct ecc_event ev; int changed, retval; if (priv_check_cred(kauth_cred_get(), PRIV_HW_DEBUG_DATA, 0) != 0) { return EPERM; } if (KERN_SUCCESS != ecc_log_get_next_event(&ev)) { /* * EAGAIN would be better, but sysctl infrastructure * interprets that */ return EBUSY; } retval = sysctl_io_opaque(req, &ev, sizeof(ev), &changed); assert(!changed); return retval; } SYSCTL_PROC(_kern, OID_AUTO, next_ecc_event, CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_MASKED | CTLTYPE_STRUCT, 0, 0, get_ecc_data_handler, "-", "");