/* * Copyright (c) 1999-2017 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #if __has_include(<CrashReporterClient.h>) #include <CrashReporterClient.h> #else #define CRSetCrashLogMessage(...) #endif #include <stdlib.h> #include <stdio.h> #include <unistd.h> #include <signal.h> #include <sys/signal.h> #include <errno.h> #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wstrict-prototypes" extern int __platform_sigaction (int sig, const struct sigaction * __restrict nsv, struct sigaction * __restrict osv); int sigaction (int sig, const struct sigaction * __restrict nsv, struct sigaction * __restrict osv) { int ret = __platform_sigaction(sig, nsv, osv); #ifdef FEATURE_SIGNAL_RESTRICTION // Note: The "sig != 0" here is to force the compiler to maintain that "sig" // is live, and in a register, after __sigaction so it is visible in the // crashing register state. if (ret == -1 && errno == ENOTSUP && sig != 0) { CRSetCrashLogMessage("sigaction on fatal signals is not supported"); __builtin_trap(); } #endif return ret; } // XXX #ifdef __DYNAMIC__ int _sigaction_nobind (sig, nsv, osv) int sig; register const struct sigaction *nsv; register struct sigaction *osv; { return sigaction(sig, nsv, osv); } #endif #pragma clang diagnostic pop