1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <signal.h>
30 #include <string.h>
31
32 #include "bionic/pthread_internal.h"
33
34 const char* const sys_siglist[NSIG] = {
35 #define __BIONIC_SIGDEF(signal_number, signal_description) [ signal_number ] = signal_description,
36 #include "private/bionic_sigdefs.h"
37 };
38
39 const char* const sys_signame[NSIG] = {
40 #define __BIONIC_SIGDEF(signal_number, unused) [ signal_number ] = &(#signal_number)[3],
41 #include "private/bionic_sigdefs.h"
42 };
43
__strsignal(int signal_number,char * buf,size_t buf_len)44 extern "C" __LIBC_HIDDEN__ const char* __strsignal(int signal_number, char* buf, size_t buf_len) {
45 const char* signal_name = nullptr;
46 if (signal_number >= 0 && signal_number < NSIG) {
47 signal_name = sys_siglist[signal_number];
48 }
49 if (signal_name != nullptr) {
50 return signal_name;
51 }
52
53 const char* prefix = "Unknown";
54 if (signal_number >= SIGRTMIN && signal_number <= SIGRTMAX) {
55 prefix = "Real-time";
56 signal_number -= SIGRTMIN;
57 }
58 size_t length = snprintf(buf, buf_len, "%s signal %d", prefix, signal_number);
59 if (length >= buf_len) {
60 return nullptr;
61 }
62 return buf;
63 }
64
strsignal(int signal_number)65 char* strsignal(int signal_number) {
66 bionic_tls& tls = __get_bionic_tls();
67 return const_cast<char*>(__strsignal(signal_number, tls.strsignal_buf, sizeof(tls.strsignal_buf)));
68 }
69