887 lines
26 KiB
C++
887 lines
26 KiB
C++
// Copyright 2006-2014 The Android Open Source Project
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <signal.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <arpa/inet.h>
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#include <cutils/sockets.h>
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#include <log/log.h>
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#include <log/log_read.h>
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#include <log/logger.h>
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#include <log/logd.h>
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#include <log/logprint.h>
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#include <log/event_tag_map.h>
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#define DEFAULT_LOG_ROTATE_SIZE_KBYTES 16
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#define DEFAULT_MAX_ROTATED_LOGS 4
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static AndroidLogFormat * g_logformat;
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/* logd prefixes records with a length field */
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#define RECORD_LENGTH_FIELD_SIZE_BYTES sizeof(uint32_t)
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struct log_device_t {
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const char* device;
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bool binary;
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struct logger *logger;
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struct logger_list *logger_list;
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bool printed;
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char label;
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log_device_t* next;
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log_device_t(const char* d, bool b, char l) {
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device = d;
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binary = b;
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label = l;
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next = NULL;
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printed = false;
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}
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};
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namespace android {
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/* Global Variables */
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static const char * g_outputFileName = NULL;
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static int g_logRotateSizeKBytes = 0; // 0 means "no log rotation"
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static int g_maxRotatedLogs = DEFAULT_MAX_ROTATED_LOGS; // 0 means "unbounded"
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static int g_outFD = -1;
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static off_t g_outByteCount = 0;
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static int g_printBinary = 0;
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static int g_devCount = 0;
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static EventTagMap* g_eventTagMap = NULL;
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static int openLogFile (const char *pathname)
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{
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return open(pathname, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR);
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}
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static void rotateLogs()
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{
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int err;
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// Can't rotate logs if we're not outputting to a file
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if (g_outputFileName == NULL) {
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return;
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}
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close(g_outFD);
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for (int i = g_maxRotatedLogs ; i > 0 ; i--) {
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char *file0, *file1;
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asprintf(&file1, "%s.%d", g_outputFileName, i);
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if (i - 1 == 0) {
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asprintf(&file0, "%s", g_outputFileName);
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} else {
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asprintf(&file0, "%s.%d", g_outputFileName, i - 1);
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}
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err = rename (file0, file1);
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if (err < 0 && errno != ENOENT) {
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perror("while rotating log files");
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}
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free(file1);
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free(file0);
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}
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g_outFD = openLogFile (g_outputFileName);
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if (g_outFD < 0) {
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perror ("couldn't open output file");
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exit(-1);
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}
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g_outByteCount = 0;
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}
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void printBinary(struct log_msg *buf)
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{
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size_t size = buf->len();
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TEMP_FAILURE_RETRY(write(g_outFD, buf, size));
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}
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static void processBuffer(log_device_t* dev, struct log_msg *buf)
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{
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int bytesWritten = 0;
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int err;
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AndroidLogEntry entry;
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char binaryMsgBuf[1024];
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if (dev->binary) {
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err = android_log_processBinaryLogBuffer(&buf->entry_v1, &entry,
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g_eventTagMap,
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binaryMsgBuf,
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sizeof(binaryMsgBuf));
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//printf(">>> pri=%d len=%d msg='%s'\n",
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// entry.priority, entry.messageLen, entry.message);
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} else {
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err = android_log_processLogBuffer(&buf->entry_v1, &entry);
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}
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if (err < 0) {
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goto error;
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}
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if (android_log_shouldPrintLine(g_logformat, entry.tag, entry.priority)) {
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if (false && g_devCount > 1) {
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binaryMsgBuf[0] = dev->label;
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binaryMsgBuf[1] = ' ';
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bytesWritten = write(g_outFD, binaryMsgBuf, 2);
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if (bytesWritten < 0) {
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perror("output error");
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exit(-1);
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}
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}
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bytesWritten = android_log_printLogLine(g_logformat, g_outFD, &entry);
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if (bytesWritten < 0) {
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perror("output error");
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exit(-1);
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}
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}
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g_outByteCount += bytesWritten;
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if (g_logRotateSizeKBytes > 0
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&& (g_outByteCount / 1024) >= g_logRotateSizeKBytes
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) {
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rotateLogs();
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}
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error:
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//fprintf (stderr, "Error processing record\n");
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return;
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}
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static void maybePrintStart(log_device_t* dev) {
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if (!dev->printed) {
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dev->printed = true;
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if (g_devCount > 1 && !g_printBinary) {
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char buf[1024];
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snprintf(buf, sizeof(buf), "--------- beginning of %s\n",
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dev->device);
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if (write(g_outFD, buf, strlen(buf)) < 0) {
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perror("output error");
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exit(-1);
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}
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}
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}
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}
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static void setupOutput()
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{
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if (g_outputFileName == NULL) {
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g_outFD = STDOUT_FILENO;
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} else {
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struct stat statbuf;
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g_outFD = openLogFile (g_outputFileName);
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if (g_outFD < 0) {
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perror ("couldn't open output file");
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exit(-1);
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}
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fstat(g_outFD, &statbuf);
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g_outByteCount = statbuf.st_size;
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}
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}
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static void show_help(const char *cmd)
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{
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fprintf(stderr,"Usage: %s [options] [filterspecs]\n", cmd);
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fprintf(stderr, "options include:\n"
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" -s Set default filter to silent.\n"
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" Like specifying filterspec '*:s'\n"
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" -f <filename> Log to file. Default to stdout\n"
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" -r [<kbytes>] Rotate log every kbytes. (16 if unspecified). Requires -f\n"
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" -n <count> Sets max number of rotated logs to <count>, default 4\n"
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" -v <format> Sets the log print format, where <format> is one of:\n\n"
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" brief process tag thread raw time threadtime long\n\n"
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" -c clear (flush) the entire log and exit\n"
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" -d dump the log and then exit (don't block)\n"
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" -t <count> print only the most recent <count> lines (implies -d)\n"
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" -T <count> print only the most recent <count> lines (does not imply -d)\n"
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" -g get the size of the log's ring buffer and exit\n"
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" -b <buffer> Request alternate ring buffer, 'main', 'system', 'radio',\n"
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" 'events' or 'all'. Multiple -b parameters are allowed and\n"
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" results are interleaved. The default is -b main -b system.\n"
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" -B output the log in binary.\n"
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" -S output statistics.\n");
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#ifdef USERDEBUG_BUILD
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fprintf(stderr, "--------------------- eng & userdebug builds only ---------------------------\n"
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" -G <count> set size of log's ring buffer and exit\n"
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" -p output prune white and ~black list\n"
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" -P '<list> ...' set prune white and ~black list; UID, /PID or !(worst UID)\n"
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" default is ~!, prune worst UID.\n"
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"-----------------------------------------------------------------------------\n"
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);
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#endif
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fprintf(stderr,"\nfilterspecs are a series of \n"
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" <tag>[:priority]\n\n"
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"where <tag> is a log component tag (or * for all) and priority is:\n"
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" V Verbose\n"
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" D Debug\n"
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" I Info\n"
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" W Warn\n"
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" E Error\n"
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" F Fatal\n"
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" S Silent (supress all output)\n"
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"\n'*' means '*:d' and <tag> by itself means <tag>:v\n"
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"\nIf not specified on the commandline, filterspec is set from ANDROID_LOG_TAGS.\n"
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"If no filterspec is found, filter defaults to '*:I'\n"
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"\nIf not specified with -v, format is set from ANDROID_PRINTF_LOG\n"
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"or defaults to \"brief\"\n\n");
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}
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} /* namespace android */
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static int setLogFormat(const char * formatString)
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{
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static AndroidLogPrintFormat format;
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format = android_log_formatFromString(formatString);
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if (format == FORMAT_OFF) {
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// FORMAT_OFF means invalid string
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return -1;
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}
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android_log_setPrintFormat(g_logformat, format);
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return 0;
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}
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extern "C" void logprint_run_tests(void);
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int main(int argc, char **argv)
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{
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int err;
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int hasSetLogFormat = 0;
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int clearLog = 0;
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int getLogSize = 0;
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#ifdef USERDEBUG_BUILD
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unsigned long setLogSize = 0;
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int getPruneList = 0;
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char *setPruneList = NULL;
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#endif
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int printStatistics = 0;
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int mode = O_RDONLY;
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const char *forceFilters = NULL;
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log_device_t* devices = NULL;
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log_device_t* dev;
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bool needBinary = false;
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struct logger_list *logger_list;
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unsigned int tail_lines = 0;
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log_time tail_time(log_time::EPOCH);
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signal(SIGPIPE, exit);
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g_logformat = android_log_format_new();
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if (argc == 2 && 0 == strcmp(argv[1], "--test")) {
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logprint_run_tests();
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exit(0);
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}
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if (argc == 2 && 0 == strcmp(argv[1], "--help")) {
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android::show_help(argv[0]);
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exit(0);
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}
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for (;;) {
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int ret;
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ret = getopt(argc, argv,
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#ifdef USERDEBUG_BUILD
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"cdt:T:gG:sQf:r::n:v:b:BSpP:"
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#else
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"cdt:T:gsQf:r::n:v:b:BS"
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#endif
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);
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if (ret < 0) {
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break;
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}
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switch(ret) {
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case 's':
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// default to all silent
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android_log_addFilterRule(g_logformat, "*:s");
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break;
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case 'c':
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clearLog = 1;
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mode = O_WRONLY;
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break;
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case 'd':
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mode = O_RDONLY | O_NDELAY;
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break;
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case 't':
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mode = O_RDONLY | O_NDELAY;
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/* FALLTHRU */
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case 'T':
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if (strspn(optarg, "0123456789") != strlen(optarg)) {
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char *cp = tail_time.strptime(optarg,
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log_time::default_format);
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if (!cp) {
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fprintf(stderr,
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"ERROR: -%c \"%s\" not in \"%s\" time format\n",
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ret, optarg, log_time::default_format);
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exit(1);
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}
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if (*cp) {
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char c = *cp;
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*cp = '\0';
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fprintf(stderr,
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"WARNING: -%c \"%s\"\"%c%s\" time truncated\n",
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ret, optarg, c, cp + 1);
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*cp = c;
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}
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} else {
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tail_lines = atoi(optarg);
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if (!tail_lines) {
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fprintf(stderr,
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"WARNING: -%c %s invalid, setting to 1\n",
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ret, optarg);
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tail_lines = 1;
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}
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}
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break;
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case 'g':
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getLogSize = 1;
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break;
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#ifdef USERDEBUG_BUILD
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case 'G': {
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// would use atol if not for the multiplier
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char *cp = optarg;
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setLogSize = 0;
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while (('0' <= *cp) && (*cp <= '9')) {
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setLogSize *= 10;
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setLogSize += *cp - '0';
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++cp;
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}
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switch(*cp) {
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case 'g':
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case 'G':
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setLogSize *= 1024;
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/* FALLTHRU */
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case 'm':
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case 'M':
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setLogSize *= 1024;
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/* FALLTHRU */
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case 'k':
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case 'K':
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setLogSize *= 1024;
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/* FALLTHRU */
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case '\0':
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break;
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default:
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setLogSize = 0;
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}
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if (!setLogSize) {
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fprintf(stderr, "ERROR: -G <num><multiplier>\n");
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exit(1);
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}
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}
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break;
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case 'p':
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getPruneList = 1;
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break;
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case 'P':
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setPruneList = optarg;
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break;
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#endif
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case 'b': {
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if (strcmp(optarg, "all") == 0) {
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while (devices) {
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dev = devices;
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devices = dev->next;
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delete dev;
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}
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dev = devices = new log_device_t("main", false, 'm');
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android::g_devCount = 1;
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if (android_name_to_log_id("system") == LOG_ID_SYSTEM) {
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dev->next = new log_device_t("system", false, 's');
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if (dev->next) {
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dev = dev->next;
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android::g_devCount++;
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}
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}
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if (android_name_to_log_id("radio") == LOG_ID_RADIO) {
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dev->next = new log_device_t("radio", false, 'r');
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if (dev->next) {
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dev = dev->next;
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android::g_devCount++;
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}
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}
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if (android_name_to_log_id("events") == LOG_ID_EVENTS) {
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dev->next = new log_device_t("events", true, 'e');
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if (dev->next) {
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android::g_devCount++;
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needBinary = true;
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}
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}
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break;
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}
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bool binary = strcmp(optarg, "events") == 0;
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if (binary) {
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needBinary = true;
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}
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if (devices) {
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dev = devices;
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while (dev->next) {
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dev = dev->next;
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}
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dev->next = new log_device_t(optarg, binary, optarg[0]);
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} else {
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devices = new log_device_t(optarg, binary, optarg[0]);
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}
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android::g_devCount++;
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}
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break;
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case 'B':
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android::g_printBinary = 1;
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break;
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case 'f':
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// redirect output to a file
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android::g_outputFileName = optarg;
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break;
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case 'r':
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if (optarg == NULL) {
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android::g_logRotateSizeKBytes
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= DEFAULT_LOG_ROTATE_SIZE_KBYTES;
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} else {
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long logRotateSize;
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char *lastDigit;
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if (!isdigit(optarg[0])) {
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fprintf(stderr,"Invalid parameter to -r\n");
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android::show_help(argv[0]);
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exit(-1);
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}
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android::g_logRotateSizeKBytes = atoi(optarg);
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}
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break;
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case 'n':
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if (!isdigit(optarg[0])) {
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fprintf(stderr,"Invalid parameter to -r\n");
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android::show_help(argv[0]);
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exit(-1);
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}
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android::g_maxRotatedLogs = atoi(optarg);
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break;
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case 'v':
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err = setLogFormat (optarg);
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if (err < 0) {
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fprintf(stderr,"Invalid parameter to -v\n");
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android::show_help(argv[0]);
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exit(-1);
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}
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hasSetLogFormat = 1;
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break;
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case 'Q':
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/* this is a *hidden* option used to start a version of logcat */
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/* in an emulated device only. it basically looks for androidboot.logcat= */
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/* on the kernel command line. If something is found, it extracts a log filter */
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/* and uses it to run the program. If nothing is found, the program should */
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/* quit immediately */
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#define KERNEL_OPTION "androidboot.logcat="
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#define CONSOLE_OPTION "androidboot.console="
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{
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int fd;
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char* logcat;
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char* console;
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int force_exit = 1;
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static char cmdline[1024];
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fd = open("/proc/cmdline", O_RDONLY);
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if (fd >= 0) {
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int n = read(fd, cmdline, sizeof(cmdline)-1 );
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if (n < 0) n = 0;
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cmdline[n] = 0;
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close(fd);
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} else {
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cmdline[0] = 0;
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}
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logcat = strstr( cmdline, KERNEL_OPTION );
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console = strstr( cmdline, CONSOLE_OPTION );
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if (logcat != NULL) {
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|
char* p = logcat + sizeof(KERNEL_OPTION)-1;;
|
|
char* q = strpbrk( p, " \t\n\r" );;
|
|
|
|
if (q != NULL)
|
|
*q = 0;
|
|
|
|
forceFilters = p;
|
|
force_exit = 0;
|
|
}
|
|
/* if nothing found or invalid filters, exit quietly */
|
|
if (force_exit)
|
|
exit(0);
|
|
|
|
/* redirect our output to the emulator console */
|
|
if (console) {
|
|
char* p = console + sizeof(CONSOLE_OPTION)-1;
|
|
char* q = strpbrk( p, " \t\n\r" );
|
|
char devname[64];
|
|
int len;
|
|
|
|
if (q != NULL) {
|
|
len = q - p;
|
|
} else
|
|
len = strlen(p);
|
|
|
|
len = snprintf( devname, sizeof(devname), "/dev/%.*s", len, p );
|
|
fprintf(stderr, "logcat using %s (%d)\n", devname, len);
|
|
if (len < (int)sizeof(devname)) {
|
|
fd = open( devname, O_WRONLY );
|
|
if (fd >= 0) {
|
|
dup2(fd, 1);
|
|
dup2(fd, 2);
|
|
close(fd);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'S':
|
|
printStatistics = 1;
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr,"Unrecognized Option\n");
|
|
android::show_help(argv[0]);
|
|
exit(-1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!devices) {
|
|
devices = new log_device_t("main", false, 'm');
|
|
android::g_devCount = 1;
|
|
if (android_name_to_log_id("system") == LOG_ID_SYSTEM) {
|
|
devices->next = new log_device_t("system", false, 's');
|
|
android::g_devCount++;
|
|
}
|
|
}
|
|
|
|
if (android::g_logRotateSizeKBytes != 0
|
|
&& android::g_outputFileName == NULL
|
|
) {
|
|
fprintf(stderr,"-r requires -f as well\n");
|
|
android::show_help(argv[0]);
|
|
exit(-1);
|
|
}
|
|
|
|
android::setupOutput();
|
|
|
|
if (hasSetLogFormat == 0) {
|
|
const char* logFormat = getenv("ANDROID_PRINTF_LOG");
|
|
|
|
if (logFormat != NULL) {
|
|
err = setLogFormat(logFormat);
|
|
|
|
if (err < 0) {
|
|
fprintf(stderr, "invalid format in ANDROID_PRINTF_LOG '%s'\n",
|
|
logFormat);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (forceFilters) {
|
|
err = android_log_addFilterString(g_logformat, forceFilters);
|
|
if (err < 0) {
|
|
fprintf (stderr, "Invalid filter expression in -logcat option\n");
|
|
exit(0);
|
|
}
|
|
} else if (argc == optind) {
|
|
// Add from environment variable
|
|
char *env_tags_orig = getenv("ANDROID_LOG_TAGS");
|
|
|
|
if (env_tags_orig != NULL) {
|
|
err = android_log_addFilterString(g_logformat, env_tags_orig);
|
|
|
|
if (err < 0) {
|
|
fprintf(stderr, "Invalid filter expression in"
|
|
" ANDROID_LOG_TAGS\n");
|
|
android::show_help(argv[0]);
|
|
exit(-1);
|
|
}
|
|
}
|
|
} else {
|
|
// Add from commandline
|
|
for (int i = optind ; i < argc ; i++) {
|
|
err = android_log_addFilterString(g_logformat, argv[i]);
|
|
|
|
if (err < 0) {
|
|
fprintf (stderr, "Invalid filter expression '%s'\n", argv[i]);
|
|
android::show_help(argv[0]);
|
|
exit(-1);
|
|
}
|
|
}
|
|
}
|
|
|
|
dev = devices;
|
|
if (tail_time != log_time::EPOCH) {
|
|
logger_list = android_logger_list_alloc_time(mode, tail_time, 0);
|
|
} else {
|
|
logger_list = android_logger_list_alloc(mode, tail_lines, 0);
|
|
}
|
|
while (dev) {
|
|
dev->logger_list = logger_list;
|
|
dev->logger = android_logger_open(logger_list,
|
|
android_name_to_log_id(dev->device));
|
|
if (!dev->logger) {
|
|
fprintf(stderr, "Unable to open log device '%s'\n", dev->device);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (clearLog) {
|
|
int ret;
|
|
ret = android_logger_clear(dev->logger);
|
|
if (ret) {
|
|
perror("clearLog");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
#ifdef USERDEBUG_BUILD
|
|
|
|
if (setLogSize && android_logger_set_log_size(dev->logger, setLogSize)) {
|
|
perror("setLogSize");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
#endif
|
|
|
|
if (getLogSize) {
|
|
long size, readable;
|
|
|
|
size = android_logger_get_log_size(dev->logger);
|
|
if (size < 0) {
|
|
perror("getLogSize");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
readable = android_logger_get_log_readable_size(dev->logger);
|
|
if (readable < 0) {
|
|
perror("getLogReadableSize");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
printf("%s: ring buffer is %ldKb (%ldKb consumed), "
|
|
"max entry is %db, max payload is %db\n", dev->device,
|
|
size / 1024, readable / 1024,
|
|
(int) LOGGER_ENTRY_MAX_LEN, (int) LOGGER_ENTRY_MAX_PAYLOAD);
|
|
}
|
|
|
|
dev = dev->next;
|
|
}
|
|
|
|
#ifdef USERDEBUG_BUILD
|
|
|
|
if (setPruneList) {
|
|
size_t len = strlen(setPruneList) + 32; // margin to allow rc
|
|
char *buf = (char *) malloc(len);
|
|
|
|
strcpy(buf, setPruneList);
|
|
int ret = android_logger_set_prune_list(logger_list, buf, len);
|
|
free(buf);
|
|
|
|
if (ret) {
|
|
perror("setPruneList");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
if (
|
|
#ifdef USERDEBUG_BUILD
|
|
printStatistics || getPruneList
|
|
#else
|
|
printStatistics
|
|
#endif
|
|
) {
|
|
size_t len = 8192;
|
|
char *buf;
|
|
|
|
for(int retry = 32;
|
|
(retry >= 0) && ((buf = new char [len]));
|
|
delete [] buf, --retry) {
|
|
#ifdef USERDEBUG_BUILD
|
|
if (getPruneList) {
|
|
android_logger_get_prune_list(logger_list, buf, len);
|
|
} else {
|
|
android_logger_get_statistics(logger_list, buf, len);
|
|
}
|
|
#else
|
|
android_logger_get_statistics(logger_list, buf, len);
|
|
#endif
|
|
buf[len-1] = '\0';
|
|
size_t ret = atol(buf) + 1;
|
|
if (ret < 4) {
|
|
delete [] buf;
|
|
buf = NULL;
|
|
break;
|
|
}
|
|
bool check = ret <= len;
|
|
len = ret;
|
|
if (check) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!buf) {
|
|
perror("response read");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
// remove trailing FF
|
|
char *cp = buf + len - 1;
|
|
*cp = '\0';
|
|
bool truncated = *--cp != '\f';
|
|
if (!truncated) {
|
|
*cp = '\0';
|
|
}
|
|
|
|
// squash out the byte count
|
|
cp = buf;
|
|
if (!truncated) {
|
|
while (isdigit(*cp) || (*cp == '\n')) {
|
|
++cp;
|
|
}
|
|
}
|
|
|
|
printf("%s", cp);
|
|
delete [] buf;
|
|
exit(0);
|
|
}
|
|
|
|
|
|
if (getLogSize) {
|
|
exit(0);
|
|
}
|
|
#ifdef USERDEBUG_BUILD
|
|
if (setLogSize || setPruneList) {
|
|
exit(0);
|
|
}
|
|
#endif
|
|
if (clearLog) {
|
|
exit(0);
|
|
}
|
|
|
|
//LOG_EVENT_INT(10, 12345);
|
|
//LOG_EVENT_LONG(11, 0x1122334455667788LL);
|
|
//LOG_EVENT_STRING(0, "whassup, doc?");
|
|
|
|
if (needBinary)
|
|
android::g_eventTagMap = android_openEventTagMap(EVENT_TAG_MAP_FILE);
|
|
|
|
while (1) {
|
|
struct log_msg log_msg;
|
|
int ret = android_logger_list_read(logger_list, &log_msg);
|
|
|
|
if (ret == 0) {
|
|
fprintf(stderr, "read: Unexpected EOF!\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (ret < 0) {
|
|
if (ret == -EAGAIN) {
|
|
break;
|
|
}
|
|
|
|
if (ret == -EIO) {
|
|
fprintf(stderr, "read: Unexpected EOF!\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
if (ret == -EINVAL) {
|
|
fprintf(stderr, "read: unexpected length.\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
perror("logcat read");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
for(dev = devices; dev; dev = dev->next) {
|
|
if (android_name_to_log_id(dev->device) == log_msg.id()) {
|
|
break;
|
|
}
|
|
}
|
|
if (!dev) {
|
|
fprintf(stderr, "read: Unexpected log ID!\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
android::maybePrintStart(dev);
|
|
if (android::g_printBinary) {
|
|
android::printBinary(&log_msg);
|
|
} else {
|
|
android::processBuffer(dev, &log_msg);
|
|
}
|
|
}
|
|
|
|
android_logger_list_free(logger_list);
|
|
|
|
return 0;
|
|
}
|