1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <errno.h> 18 #include <signal.h> 19 #include <stdarg.h> 20 #include <sys/ptrace.h> 21 22 #include <string> 23 24 #include "ptrace_fake.h" 25 26 siginfo_t g_fake_si = {.si_signo = 0}; 27 28 void ptrace_set_fake_getsiginfo(const siginfo_t& si) { 29 g_fake_si = si; 30 } 31 32 #if !defined(__BIONIC__) 33 extern "C" long ptrace_fake(enum __ptrace_request request, ...) { 34 #else 35 extern "C" long ptrace_fake(int request, ...) { 36 #endif 37 if (request == PTRACE_GETSIGINFO) { 38 if (g_fake_si.si_signo == 0) { 39 errno = EFAULT; 40 return -1; 41 } 42 43 va_list ap; 44 va_start(ap, request); 45 va_arg(ap, int); 46 va_arg(ap, int); 47 siginfo_t* si = va_arg(ap, siginfo*); 48 va_end(ap); 49 *si = g_fake_si; 50 return 0; 51 } 52 return -1; 53 } 54
