1 /*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <errno.h>
18 #include <stdio.h>
19 #include <sys/socket.h>
20 #include <sys/types.h>
21 #include <unistd.h>
22
23 #include <cutils/properties.h>
24 #include <cutils/sockets.h>
25
26 // This program will trigger the dumpstate service to start a call to
27 // dumpstate, then connect to the dumpstate local client to read the
28 // output. All of the dumpstate output is written to stdout, including
29 // any errors encountered while reading/writing the output.
main()30 int main() {
31
32 fprintf(stderr, "=============================================================================\n");
33 fprintf(stderr, "WARNING: flat bugreports are deprecated, use adb bugreport <zip_file> instead\n");
34 fprintf(stderr, "=============================================================================\n\n\n");
35
36 // Start the dumpstate service.
37 property_set("ctl.start", "dumpstate");
38
39 // Socket will not be available until service starts.
40 int s;
41 for (int i = 0; i < 20; i++) {
42 s = socket_local_client("dumpstate", ANDROID_SOCKET_NAMESPACE_RESERVED,
43 SOCK_STREAM);
44 if (s >= 0)
45 break;
46 // Try again in 1 second.
47 sleep(1);
48 }
49
50 if (s == -1) {
51 printf("Failed to connect to dumpstate service: %s\n", strerror(errno));
52 return 1;
53 }
54
55 // Set a timeout so that if nothing is read in 3 minutes, we'll stop
56 // reading and quit. No timeout in dumpstate is longer than 60 seconds,
57 // so this gives lots of leeway in case of unforeseen time outs.
58 struct timeval tv;
59 tv.tv_sec = 3 * 60;
60 tv.tv_usec = 0;
61 if (setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1) {
62 printf("WARNING: Cannot set socket timeout: %s\n", strerror(errno));
63 }
64
65 while (1) {
66 char buffer[65536];
67 ssize_t bytes_read = TEMP_FAILURE_RETRY(read(s, buffer, sizeof(buffer)));
68 if (bytes_read == 0) {
69 break;
70 } else if (bytes_read == -1) {
71 // EAGAIN really means time out, so change the errno.
72 if (errno == EAGAIN) {
73 errno = ETIMEDOUT;
74 }
75 printf("\nBugreport read terminated abnormally (%s).\n", strerror(errno));
76 break;
77 }
78
79 ssize_t bytes_to_send = bytes_read;
80 ssize_t bytes_written;
81 do {
82 bytes_written = TEMP_FAILURE_RETRY(write(STDOUT_FILENO,
83 buffer + bytes_read - bytes_to_send,
84 bytes_to_send));
85 if (bytes_written == -1) {
86 printf("Failed to write data to stdout: read %zd, trying to send %zd (%s)\n",
87 bytes_read, bytes_to_send, strerror(errno));
88 return 1;
89 }
90 bytes_to_send -= bytes_written;
91 } while (bytes_written != 0 && bytes_to_send > 0);
92 }
93
94 close(s);
95 return 0;
96 }
97