| /* |
| * 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); |
| } |