/* * Copyright (C) 2008 The Android Open Source Project * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <ctype.h> #include <signal.h> #include <sys/mman.h> #include "linker.h" #include <sys/socket.h> #include <cutils/sockets.h> void notify_gdb_of_libraries(); void debugger_signal_handler(int n) { unsigned tid; int s; /* avoid picking up GC interrupts */ signal(SIGUSR1, SIG_IGN); tid = gettid(); s = socket_local_client("android:debuggerd", ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM); if(s >= 0) { /* debugger knows our pid from the credentials on the * local socket but we need to tell it our tid. It * is paranoid and will verify that we are giving a tid * that's actually in our process */ write(s, &tid, sizeof(unsigned)); read(s, &tid, 1); notify_gdb_of_libraries(); close(s); } /* remove our net so we fault for real when we return */ signal(n, SIG_IGN); } void debugger_init() { signal(SIGILL, debugger_signal_handler); signal(SIGABRT, debugger_signal_handler); signal(SIGBUS, debugger_signal_handler); signal(SIGFPE, debugger_signal_handler); signal(SIGSEGV, debugger_signal_handler); signal(SIGSTKFLT, debugger_signal_handler); signal(SIGPIPE, debugger_signal_handler); }