| | 1 | /* |
| | 2 | * Copyright (c) 2013 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | #include <kern/debug.h> |
| | 29 | #include <sys/param.h> |
| | 30 | #include <sys/mman.h> |
| | 31 | #include <sys/stat.h> |
| | 32 | #include <sys/sysctl.h> |
| | 33 | #include <sys/priv.h> |
| | 34 | #include <mach/machine.h> |
| | 35 | #include <libkern/libkern.h> |
| | 36 | #include <kern/assert.h> |
| | 37 | #include <pexpert/pexpert.h> |
| | 38 | #include <kern/ecc.h> |
| | 39 | |
| | 40 | static int |
| | 41 | get_ecc_data_handler(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, |
| | 42 | struct sysctl_req *req) |
| | 43 | { |
| | 44 | struct ecc_event ev; |
| | 45 | int changed, retval; |
| | 46 | |
| | 47 | if (priv_check_cred(kauth_cred_get(), PRIV_HW_DEBUG_DATA, 0) != 0) { |
| | 48 | return EPERM; |
| | 49 | } |
| | 50 | |
| | 51 | if (KERN_SUCCESS != ecc_log_get_next_event(&ev)) { |
| | 52 | /* |
| | 53 | * EAGAIN would be better, but sysctl infrastructure |
| | 54 | * interprets that */ |
| | 55 | return EBUSY; |
| | 56 | } |
| | 57 | |
| | 58 | retval = sysctl_io_opaque(req, &ev, sizeof(ev), &changed); |
| | 59 | assert(!changed); |
| | 60 | |
| | 61 | return retval; |
| | 62 | } |
| | 63 | |
| | 64 | SYSCTL_PROC(_kern, OID_AUTO, next_ecc_event, |
| | 65 | CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_MASKED | CTLTYPE_STRUCT, |
| | 66 | 0, 0, get_ecc_data_handler, |
| | 67 | "-", ""); |
projects / apple / xnu.git / blame_incremental