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 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 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
