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1/*
2 * Copyright (c) 2016 Apple Inc. All rights reserved.
3 *
4 * @APPLE_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. Please obtain a copy of the License at
10 * http://www.opensource.apple.com/apsl/ and read it before using this
11 * file.
12 *
13 * The Original Code and all software distributed under the License are
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
18 * Please see the License for the specific language governing rights and
19 * limitations under the License.
20 *
21 * @APPLE_LICENSE_HEADER_END@
22 */
23#include <sys/reason.h>
24#include <sys/types.h>
25#include <stdint.h>
26#include <signal.h>
27#include <unistd.h>
28
29/* System call entry points */
30int __terminate_with_payload(int pid, uint32_t reason_namespace, uint64_t reason_code,
31 void *payload, uint32_t payload_size, const char *reason_string,
32 uint64_t reason_flags);
33
34void __abort_with_payload(uint32_t reason_namespace, uint64_t reason_code,
35 void *payload, uint32_t payload_size, const char *reason_string,
36 uint64_t reason_flags);
37
38static void abort_with_payload_wrapper_internal(uint32_t reason_namespace, uint64_t reason_code,
39 void *payload, uint32_t payload_size, const char *reason_string,
40 uint64_t reason_flags) __attribute__((noreturn));
41
42/* System call wrappers */
43int
44terminate_with_reason(int pid, uint32_t reason_namespace, uint64_t reason_code,
45 const char *reason_string, uint64_t reason_flags)
46{
47 return __terminate_with_payload(pid, reason_namespace, reason_code, 0, 0,
48 reason_string, reason_flags);
49}
50
51int
52terminate_with_payload(int pid, uint32_t reason_namespace, uint64_t reason_code,
53 void *payload, uint32_t payload_size,
54 const char *reason_string, uint64_t reason_flags)
55{
56 return __terminate_with_payload(pid, reason_namespace, reason_code, payload,
57 payload_size, reason_string, reason_flags);
58}
59
60static void abort_with_payload_wrapper_internal(uint32_t reason_namespace, uint64_t reason_code,
61 void *payload, uint32_t payload_size, const char *reason_string,
62 uint64_t reason_flags)
63{
64 sigset_t unmask_signal;
65
66 /* Try to unmask SIGABRT before trapping to the kernel */
67 sigemptyset(&unmask_signal);
68 sigaddset(&unmask_signal, SIGABRT);
69 sigprocmask(SIG_UNBLOCK, &unmask_signal, NULL);
70
71 __abort_with_payload(reason_namespace, reason_code, payload, payload_size,
72 reason_string, reason_flags);
73
74 /* If sending a SIGABRT failed, we fall back to SIGKILL */
75 terminate_with_payload(getpid(), reason_namespace, reason_code, payload, payload_size,
76 reason_string, reason_flags);
77
78 __builtin_unreachable();
79}
80
81void
82abort_with_reason(uint32_t reason_namespace, uint64_t reason_code, const char *reason_string,
83 uint64_t reason_flags)
84{
85 abort_with_payload_wrapper_internal(reason_namespace, reason_code, 0, 0, reason_string, reason_flags);
86}
87
88void
89abort_with_payload(uint32_t reason_namespace, uint64_t reason_code, void *payload,
90 uint32_t payload_size, const char *reason_string,
91 uint64_t reason_flags)
92{
93 abort_with_payload_wrapper_internal(reason_namespace, reason_code, payload, payload_size,
94 reason_string, reason_flags);
95}
96