debuggerd: advance our amazing bet.

Remove debuggerd in favor of a helper process that gets execed by
crashing processes.

Bug: http://b/30705528
Test: debuggerd_test
Change-Id: I9906c69473989cbf7fe5ea6cccf9a9c563d75906

1 files changed, 0 insertions, 129 deletions

diff --git a/libcutils/debugger.c b/libcutils/debugger.c
deleted file mode 100644
index 32fac98b7..000000000
--- a/libcutils/debugger.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "DEBUG"
-
-#include <fcntl.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <cutils/debugger.h>
-#include <cutils/sockets.h>
-#include <log/log.h>
-
-static int send_request(int sock_fd, void* msg_ptr, size_t msg_len) {
-  int result = 0;
-  if (TEMP_FAILURE_RETRY(write(sock_fd, msg_ptr, msg_len)) != (ssize_t) msg_len) {
-    result = -1;
-  } else {
-    char ack;
-    if (TEMP_FAILURE_RETRY(read(sock_fd, &ack, 1)) != 1) {
-      result = -1;
-    }
-  }
-  return result;
-}
-
-static int make_dump_request(debugger_action_t action, pid_t tid, int timeout_secs) {
-  debugger_msg_t msg;
-  memset(&msg, 0, sizeof(msg));
-  msg.tid = tid;
-  msg.action = action;
-
-  int sock_fd = socket_local_client(DEBUGGER_SOCKET_NAME, ANDROID_SOCKET_NAMESPACE_ABSTRACT,
-      SOCK_STREAM | SOCK_CLOEXEC);
-  if (sock_fd < 0) {
-    return -1;
-  }
-
-  if (timeout_secs > 0) {
-    struct timeval tm;
-    tm.tv_sec = timeout_secs;
-    tm.tv_usec = 0;
-    if (setsockopt(sock_fd, SOL_SOCKET, SO_RCVTIMEO, &tm, sizeof(tm)) == -1) {
-      ALOGE("WARNING: Cannot set receive timeout value on socket: %s", strerror(errno));
-    }
-
-    if (setsockopt(sock_fd, SOL_SOCKET, SO_SNDTIMEO, &tm, sizeof(tm)) == -1) {
-      ALOGE("WARNING: Cannot set send timeout value on socket: %s", strerror(errno));
-    }
-  }
-
-  if (send_request(sock_fd, &msg, sizeof(msg)) < 0) {
-    close(sock_fd);
-    return -1;
-  }
-
-  return sock_fd;
-}
-
-int dump_backtrace_to_file(pid_t tid, int fd) {
-  return dump_backtrace_to_file_timeout(tid, fd, 0);
-}
-
-int dump_backtrace_to_file_timeout(pid_t tid, int fd, int timeout_secs) {
-  int sock_fd = make_dump_request(DEBUGGER_ACTION_DUMP_BACKTRACE, tid, timeout_secs);
-  if (sock_fd < 0) {
-    return -1;
-  }
-
-  /* Write the data read from the socket to the fd. */
-  int result = 0;
-  char buffer[1024];
-  ssize_t n;
-  while ((n = TEMP_FAILURE_RETRY(read(sock_fd, buffer, sizeof(buffer)))) > 0) {
-    if (TEMP_FAILURE_RETRY(write(fd, buffer, n)) != n) {
-      result = -1;
-      break;
-    }
-  }
-  close(sock_fd);
-  return result;
-}
-
-int dump_tombstone(pid_t tid, char* pathbuf, size_t pathlen) {
-  return dump_tombstone_timeout(tid, pathbuf, pathlen, 0);
-}
-
-int dump_tombstone_timeout(pid_t tid, char* pathbuf, size_t pathlen, int timeout_secs) {
-  int sock_fd = make_dump_request(DEBUGGER_ACTION_DUMP_TOMBSTONE, tid, timeout_secs);
-  if (sock_fd < 0) {
-    return -1;
-  }
-
-  /* Read the tombstone file name. */
-  char buffer[100]; /* This is larger than the largest tombstone path. */
-  int result = 0;
-  ssize_t n = TEMP_FAILURE_RETRY(read(sock_fd, buffer, sizeof(buffer) - 1));
-  if (n <= 0) {
-    result = -1;
-  } else {
-    if (pathbuf && pathlen) {
-      if (n >= (ssize_t) pathlen) {
-        n = pathlen - 1;
-      }
-      buffer[n] = '\0';
-      memcpy(pathbuf, buffer, n + 1);
-    }
-  }
-  close(sock_fd);
-  return result;
-}