diff options
| -rw-r--r-- | linker/debugger.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/linker/debugger.c b/linker/debugger.c index 899a5b2..756b5cf 100644 --- a/linker/debugger.c +++ b/linker/debugger.c @@ -44,6 +44,23 @@ extern int tgkill(int tgid, int tid, int sig); void notify_gdb_of_libraries(); +#define DEBUGGER_SOCKET_NAME "android:debuggerd" + +typedef enum { + // dump a crash + DEBUGGER_ACTION_CRASH, + // dump a tombstone file + DEBUGGER_ACTION_DUMP_TOMBSTONE, + // dump a backtrace only back to the socket + DEBUGGER_ACTION_DUMP_BACKTRACE, +} debugger_action_t; + +/* message sent over the socket */ +typedef struct { + debugger_action_t action; + pid_t tid; +} debugger_msg_t; + #define RETRY_ON_EINTR(ret,cond) \ do { \ ret = (cond); \ @@ -146,7 +163,7 @@ void debugger_signal_handler(int n, siginfo_t* info, void* unused) logSignalSummary(n, info); tid = gettid(); - s = socket_abstract_client("android:debuggerd", SOCK_STREAM); + s = socket_abstract_client(DEBUGGER_SOCKET_NAME, SOCK_STREAM); if (s >= 0) { /* debugger knows our pid from the credentials on the @@ -155,9 +172,11 @@ void debugger_signal_handler(int n, siginfo_t* info, void* unused) * that's actually in our process */ int ret; - - RETRY_ON_EINTR(ret, write(s, &tid, sizeof(unsigned))); - if (ret == sizeof(unsigned)) { + debugger_msg_t msg; + msg.action = DEBUGGER_ACTION_CRASH; + msg.tid = tid; + RETRY_ON_EINTR(ret, write(s, &msg, sizeof(msg))); + if (ret == sizeof(msg)) { /* if the write failed, there is no point to read on * the file descriptor. */ RETRY_ON_EINTR(ret, read(s, &tid, 1)); |