projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| fe8ab488 | 1 | /* |
| 0a7de745 A |
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 | */ | |
| fe8ab488 A |
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 | |
| 0a7de745 A |
41 | get_ecc_data_handler(__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, |
| 42 | struct sysctl_req *req) | |
| fe8ab488 A |
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)) { | |
| 0a7de745 A |
52 | /* |
| 53 | * EAGAIN would be better, but sysctl infrastructure | |
| fe8ab488 | 54 | * interprets that */ |
| 0a7de745 | 55 | return EBUSY; |
| fe8ab488 A |
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, | |
| 0a7de745 A |
65 | CTLFLAG_RD | CTLFLAG_ANYBODY | CTLFLAG_MASKED | CTLTYPE_STRUCT, |
| 66 | 0, 0, get_ecc_data_handler, | |
| 67 | "-", ""); |