From a323b504a70af5f143532f0ef521eb61ecddad6b Mon Sep 17 00:00:00 2001
From: Elliott Hughes <enh@google.com>
Date: Fri, 16 May 2014 21:12:17 -0700
Subject: Teach debuggerd the name of SIGTRAP.

Also add SIGTRAP to the list of signals we don't want to double fault on.

Bug: 15024256
Change-Id: I23ab80800563c007fcd3e42527329fedf762f0c8
---
 debuggerd/debuggerd.cpp | 16 +++++++---------
 debuggerd/tombstone.cpp |  9 +++++----
 2 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
index 1298eda..3726c38 100644
--- a/debuggerd/debuggerd.cpp
+++ b/debuggerd/debuggerd.cpp
@@ -366,38 +366,36 @@ static void handle_request(int fd) {
 }
 
 static int do_server() {
-  int s;
-  struct sigaction act;
-  int logsocket = -1;
-
-  // debuggerd crashes can't be reported to debuggerd.  Reset all of the
-  // crash handlers.
-  signal(SIGILL, SIG_DFL);
+  // debuggerd crashes can't be reported to debuggerd.
+  // Reset all of the crash handlers.
   signal(SIGABRT, SIG_DFL);
   signal(SIGBUS, SIG_DFL);
   signal(SIGFPE, SIG_DFL);
+  signal(SIGILL, SIG_DFL);
   signal(SIGSEGV, SIG_DFL);
 #ifdef SIGSTKFLT
   signal(SIGSTKFLT, SIG_DFL);
 #endif
+  signal(SIGTRAP, SIG_DFL);
 
   // Ignore failed writes to closed sockets
   signal(SIGPIPE, SIG_IGN);
 
-  logsocket = socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM);
+  int logsocket = socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM);
   if (logsocket < 0) {
     logsocket = -1;
   } else {
     fcntl(logsocket, F_SETFD, FD_CLOEXEC);
   }
 
+  struct sigaction act;
   act.sa_handler = SIG_DFL;
   sigemptyset(&act.sa_mask);
   sigaddset(&act.sa_mask,SIGCHLD);
   act.sa_flags = SA_NOCLDWAIT;
   sigaction(SIGCHLD, &act, 0);
 
-  s = socket_local_server(DEBUGGER_SOCKET_NAME, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
+  int s = socket_local_server(DEBUGGER_SOCKET_NAME, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
   if (s < 0)
     return 1;
   fcntl(s, F_SETFD, FD_CLOEXEC);
diff --git a/debuggerd/tombstone.cpp b/debuggerd/tombstone.cpp
index 6d51171..1a00146 100755
--- a/debuggerd/tombstone.cpp
+++ b/debuggerd/tombstone.cpp
@@ -58,10 +58,10 @@
 
 static bool signal_has_si_addr(int sig) {
   switch (sig) {
-    case SIGILL:
+    case SIGBUS:
     case SIGFPE:
+    case SIGILL:
     case SIGSEGV:
-    case SIGBUS:
       return true;
     default:
       return false;
@@ -70,16 +70,17 @@ static bool signal_has_si_addr(int sig) {
 
 static const char* get_signame(int sig) {
   switch(sig) {
-    case SIGILL: return "SIGILL";
     case SIGABRT: return "SIGABRT";
     case SIGBUS: return "SIGBUS";
     case SIGFPE: return "SIGFPE";
-    case SIGSEGV: return "SIGSEGV";
+    case SIGILL: return "SIGILL";
     case SIGPIPE: return "SIGPIPE";
+    case SIGSEGV: return "SIGSEGV";
 #if defined(SIGSTKFLT)
     case SIGSTKFLT: return "SIGSTKFLT";
 #endif
     case SIGSTOP: return "SIGSTOP";
+    case SIGTRAP: return "SIGTRAP";
     default: return "?";
   }
 }
-- 
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