| // Copyright 2006-2015 The Android Open Source Project |
| |
| #include <arpa/inet.h> |
| #include <assert.h> |
| #include <ctype.h> |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <getopt.h> |
| #include <math.h> |
| #include <sched.h> |
| #include <signal.h> |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/cdefs.h> |
| #include <sys/resource.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| #include <memory> |
| #include <string> |
| |
| #include <android/log.h> |
| #include <android-base/file.h> |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| #include <cutils/sched_policy.h> |
| #include <cutils/sockets.h> |
| #include <log/event_tag_map.h> |
| #include <log/logger.h> |
| #include <log/logprint.h> |
| #include <system/thread_defs.h> |
| |
| #include <pcrecpp.h> |
| |
| #define DEFAULT_MAX_ROTATED_LOGS 4 |
| |
| static AndroidLogFormat * g_logformat; |
| |
| /* logd prefixes records with a length field */ |
| #define RECORD_LENGTH_FIELD_SIZE_BYTES sizeof(uint32_t) |
| |
| struct log_device_t { |
| const char* device; |
| bool binary; |
| struct logger *logger; |
| struct logger_list *logger_list; |
| bool printed; |
| |
| log_device_t* next; |
| |
| log_device_t(const char* d, bool b) { |
| device = d; |
| binary = b; |
| next = NULL; |
| printed = false; |
| logger = NULL; |
| logger_list = NULL; |
| } |
| }; |
| |
| namespace android { |
| |
| /* Global Variables */ |
| |
| static const char * g_outputFileName; |
| // 0 means "no log rotation" |
| static size_t g_logRotateSizeKBytes; |
| // 0 means "unbounded" |
| static size_t g_maxRotatedLogs = DEFAULT_MAX_ROTATED_LOGS; |
| static int g_outFD = -1; |
| static size_t g_outByteCount; |
| static int g_printBinary; |
| static int g_devCount; // >1 means multiple |
| static pcrecpp::RE* g_regex; |
| // 0 means "infinite" |
| static size_t g_maxCount; |
| static size_t g_printCount; |
| static bool g_printItAnyways; |
| |
| // if showHelp is set, newline required in fmt statement to transition to usage |
| __noreturn static void logcat_panic(bool showHelp, const char *fmt, ...) __printflike(2,3); |
| |
| static int openLogFile (const char *pathname) |
| { |
| return open(pathname, O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR); |
| } |
| |
| static void rotateLogs() |
| { |
| int err; |
| |
| // Can't rotate logs if we're not outputting to a file |
| if (g_outputFileName == NULL) { |
| return; |
| } |
| |
| close(g_outFD); |
| |
| // Compute the maximum number of digits needed to count up to g_maxRotatedLogs in decimal. |
| // eg: g_maxRotatedLogs == 30 -> log10(30) == 1.477 -> maxRotationCountDigits == 2 |
| int maxRotationCountDigits = |
| (g_maxRotatedLogs > 0) ? (int) (floor(log10(g_maxRotatedLogs) + 1)) : 0; |
| |
| for (int i = g_maxRotatedLogs ; i > 0 ; i--) { |
| std::string file1 = android::base::StringPrintf( |
| "%s.%.*d", g_outputFileName, maxRotationCountDigits, i); |
| |
| std::string file0; |
| if (i - 1 == 0) { |
| file0 = android::base::StringPrintf("%s", g_outputFileName); |
| } else { |
| file0 = android::base::StringPrintf( |
| "%s.%.*d", g_outputFileName, maxRotationCountDigits, i - 1); |
| } |
| |
| if ((file0.length() == 0) || (file1.length() == 0)) { |
| perror("while rotating log files"); |
| break; |
| } |
| |
| err = rename(file0.c_str(), file1.c_str()); |
| |
| if (err < 0 && errno != ENOENT) { |
| perror("while rotating log files"); |
| } |
| } |
| |
| g_outFD = openLogFile(g_outputFileName); |
| |
| if (g_outFD < 0) { |
| logcat_panic(false, "couldn't open output file"); |
| } |
| |
| g_outByteCount = 0; |
| |
| } |
| |
| void printBinary(struct log_msg *buf) |
| { |
| size_t size = buf->len(); |
| |
| TEMP_FAILURE_RETRY(write(g_outFD, buf, size)); |
| } |
| |
| static bool regexOk(const AndroidLogEntry& entry) |
| { |
| if (!g_regex) { |
| return true; |
| } |
| |
| std::string messageString(entry.message, entry.messageLen); |
| |
| return g_regex->PartialMatch(messageString); |
| } |
| |
| static void processBuffer(log_device_t* dev, struct log_msg *buf) |
| { |
| int bytesWritten = 0; |
| int err; |
| AndroidLogEntry entry; |
| char binaryMsgBuf[1024]; |
| |
| if (dev->binary) { |
| static bool hasOpenedEventTagMap = false; |
| static EventTagMap *eventTagMap = NULL; |
| |
| if (!eventTagMap && !hasOpenedEventTagMap) { |
| eventTagMap = android_openEventTagMap(EVENT_TAG_MAP_FILE); |
| hasOpenedEventTagMap = true; |
| } |
| err = android_log_processBinaryLogBuffer(&buf->entry_v1, &entry, |
| eventTagMap, |
| binaryMsgBuf, |
| sizeof(binaryMsgBuf)); |
| //printf(">>> pri=%d len=%d msg='%s'\n", |
| // entry.priority, entry.messageLen, entry.message); |
| } else { |
| err = android_log_processLogBuffer(&buf->entry_v1, &entry); |
| } |
| if (err < 0) { |
| goto error; |
| } |
| |
| if (android_log_shouldPrintLine(g_logformat, entry.tag, entry.priority)) { |
| bool match = regexOk(entry); |
| |
| g_printCount += match; |
| if (match || g_printItAnyways) { |
| bytesWritten = android_log_printLogLine(g_logformat, g_outFD, &entry); |
| |
| if (bytesWritten < 0) { |
| logcat_panic(false, "output error"); |
| } |
| } |
| } |
| |
| g_outByteCount += bytesWritten; |
| |
| if (g_logRotateSizeKBytes > 0 |
| && (g_outByteCount / 1024) >= g_logRotateSizeKBytes |
| ) { |
| rotateLogs(); |
| } |
| |
| error: |
| //fprintf (stderr, "Error processing record\n"); |
| return; |
| } |
| |
| static void maybePrintStart(log_device_t* dev, bool printDividers) { |
| if (!dev->printed || printDividers) { |
| if (g_devCount > 1 && !g_printBinary) { |
| char buf[1024]; |
| snprintf(buf, sizeof(buf), "--------- %s %s\n", |
| dev->printed ? "switch to" : "beginning of", |
| dev->device); |
| if (write(g_outFD, buf, strlen(buf)) < 0) { |
| logcat_panic(false, "output error"); |
| } |
| } |
| dev->printed = true; |
| } |
| } |
| |
| static void setupOutputAndSchedulingPolicy(bool blocking) { |
| if (g_outputFileName == NULL) { |
| g_outFD = STDOUT_FILENO; |
| return; |
| } |
| |
| if (blocking) { |
| // Lower priority and set to batch scheduling if we are saving |
| // the logs into files and taking continuous content. |
| if (set_sched_policy(0, SP_BACKGROUND) < 0) { |
| fprintf(stderr, "failed to set background scheduling policy\n"); |
| } |
| |
| struct sched_param param; |
| memset(¶m, 0, sizeof(param)); |
| if (sched_setscheduler((pid_t) 0, SCHED_BATCH, ¶m) < 0) { |
| fprintf(stderr, "failed to set to batch scheduler\n"); |
| } |
| |
| if (setpriority(PRIO_PROCESS, 0, ANDROID_PRIORITY_BACKGROUND) < 0) { |
| fprintf(stderr, "failed set to priority\n"); |
| } |
| } |
| |
| g_outFD = openLogFile (g_outputFileName); |
| |
| if (g_outFD < 0) { |
| logcat_panic(false, "couldn't open output file"); |
| } |
| |
| struct stat statbuf; |
| if (fstat(g_outFD, &statbuf) == -1) { |
| close(g_outFD); |
| logcat_panic(false, "couldn't get output file stat\n"); |
| } |
| |
| if ((size_t) statbuf.st_size > SIZE_MAX || statbuf.st_size < 0) { |
| close(g_outFD); |
| logcat_panic(false, "invalid output file stat\n"); |
| } |
| |
| g_outByteCount = statbuf.st_size; |
| } |
| |
| static void show_help(const char *cmd) |
| { |
| fprintf(stderr,"Usage: %s [options] [filterspecs]\n", cmd); |
| |
| fprintf(stderr, "options include:\n" |
| " -s Set default filter to silent. Equivalent to filterspec '*:S'\n" |
| " -f <file>, --file=<file> Log to file. Default is stdout\n" |
| " -r <kbytes>, --rotate-kbytes=<kbytes>\n" |
| " Rotate log every kbytes. Requires -f option\n" |
| " -n <count>, --rotate-count=<count>\n" |
| " Sets max number of rotated logs to <count>, default 4\n" |
| " --id=<id> If the signature id for logging to file changes, then clear\n" |
| " the fileset and continue\n" |
| " -v <format>, --format=<format>\n" |
| " Sets log print format verb and adverbs, where <format> is:\n" |
| " brief long process raw tag thread threadtime time\n" |
| " and individually flagged modifying adverbs can be added:\n" |
| " color epoch monotonic printable uid usec UTC year zone\n" |
| " -D, --dividers Print dividers between each log buffer\n" |
| " -c, --clear Clear (flush) the entire log and exit\n" |
| " if Log to File specified, clear fileset instead\n" |
| " -d Dump the log and then exit (don't block)\n" |
| " -e <expr>, --regex=<expr>\n" |
| " Only print lines where the log message matches <expr>\n" |
| " where <expr> is a regular expression\n" |
| // Leave --head undocumented as alias for -m |
| " -m <count>, --max-count=<count>\n" |
| " Quit after printing <count> lines. This is meant to be\n" |
| " paired with --regex, but will work on its own.\n" |
| " --print Paired with --regex and --max-count to let content bypass\n" |
| " regex filter but still stop at number of matches.\n" |
| // Leave --tail undocumented as alias for -t |
| " -t <count> Print only the most recent <count> lines (implies -d)\n" |
| " -t '<time>' Print most recent lines since specified time (implies -d)\n" |
| " -T <count> Print only the most recent <count> lines (does not imply -d)\n" |
| " -T '<time>' Print most recent lines since specified time (not imply -d)\n" |
| " count is pure numerical, time is 'MM-DD hh:mm:ss.mmm...'\n" |
| " 'YYYY-MM-DD hh:mm:ss.mmm...' or 'sssss.mmm...' format\n" |
| " -g, --buffer-size Get the size of the ring buffer.\n" |
| " -G <size>, --buffer-size=<size>\n" |
| " Set size of log ring buffer, may suffix with K or M.\n" |
| " -L, -last Dump logs from prior to last reboot\n" |
| // Leave security (Device Owner only installations) and |
| // kernel (userdebug and eng) buffers undocumented. |
| " -b <buffer>, --buffer=<buffer> Request alternate ring buffer, 'main',\n" |
| " 'system', 'radio', 'events', 'crash', 'default' or 'all'.\n" |
| " Multiple -b parameters or comma separated list of buffers are\n" |
| " allowed. Buffers interleaved. Default -b main,system,crash.\n" |
| " -B, --binary Output the log in binary.\n" |
| " -S, --statistics Output statistics.\n" |
| " -p, --prune Print prune white and ~black list. Service is specified as\n" |
| " UID, UID/PID or /PID. Weighed for quicker pruning if prefix\n" |
| " with ~, otherwise weighed for longevity if unadorned. All\n" |
| " other pruning activity is oldest first. Special case ~!\n" |
| " represents an automatic quicker pruning for the noisiest\n" |
| " UID as determined by the current statistics.\n" |
| " -P '<list> ...', --prune='<list> ...'\n" |
| " Set prune white and ~black list, using same format as\n" |
| " listed above. Must be quoted.\n" |
| " --pid=<pid> Only prints logs from the given pid.\n" |
| // Check ANDROID_LOG_WRAP_DEFAULT_TIMEOUT value for match to 2 hours |
| " --wrap Sleep for 2 hours or when buffer about to wrap whichever\n" |
| " comes first. Improves efficiency of polling by providing\n" |
| " an about-to-wrap wakeup.\n"); |
| |
| fprintf(stderr,"\nfilterspecs are a series of \n" |
| " <tag>[:priority]\n\n" |
| "where <tag> is a log component tag (or * for all) and priority is:\n" |
| " V Verbose (default for <tag>)\n" |
| " D Debug (default for '*')\n" |
| " I Info\n" |
| " W Warn\n" |
| " E Error\n" |
| " F Fatal\n" |
| " S Silent (suppress all output)\n" |
| "\n'*' by itself means '*:D' and <tag> by itself means <tag>:V.\n" |
| "If no '*' filterspec or -s on command line, all filter defaults to '*:V'.\n" |
| "eg: '*:S <tag>' prints only <tag>, '<tag>:S' suppresses all <tag> log messages.\n" |
| "\nIf not specified on the command line, filterspec is set from ANDROID_LOG_TAGS.\n" |
| "\nIf not specified with -v on command line, format is set from ANDROID_PRINTF_LOG\n" |
| "or defaults to \"threadtime\"\n\n"); |
| } |
| |
| static int setLogFormat(const char * formatString) |
| { |
| static AndroidLogPrintFormat format; |
| |
| format = android_log_formatFromString(formatString); |
| |
| if (format == FORMAT_OFF) { |
| // FORMAT_OFF means invalid string |
| return -1; |
| } |
| |
| return android_log_setPrintFormat(g_logformat, format); |
| } |
| |
| static const char multipliers[][2] = { |
| { "" }, |
| { "K" }, |
| { "M" }, |
| { "G" } |
| }; |
| |
| static unsigned long value_of_size(unsigned long value) |
| { |
| for (unsigned i = 0; |
| (i < sizeof(multipliers)/sizeof(multipliers[0])) && (value >= 1024); |
| value /= 1024, ++i) ; |
| return value; |
| } |
| |
| static const char *multiplier_of_size(unsigned long value) |
| { |
| unsigned i; |
| for (i = 0; |
| (i < sizeof(multipliers)/sizeof(multipliers[0])) && (value >= 1024); |
| value /= 1024, ++i) ; |
| return multipliers[i]; |
| } |
| |
| /*String to unsigned int, returns -1 if it fails*/ |
| static bool getSizeTArg(const char *ptr, size_t *val, size_t min = 0, |
| size_t max = SIZE_MAX) |
| { |
| if (!ptr) { |
| return false; |
| } |
| |
| char *endp; |
| errno = 0; |
| size_t ret = (size_t)strtoll(ptr, &endp, 0); |
| |
| if (endp[0] || errno) { |
| return false; |
| } |
| |
| if ((ret > max) || (ret < min)) { |
| return false; |
| } |
| |
| *val = ret; |
| return true; |
| } |
| |
| static void logcat_panic(bool showHelp, const char *fmt, ...) |
| { |
| va_list args; |
| va_start(args, fmt); |
| vfprintf(stderr, fmt, args); |
| va_end(args); |
| |
| if (showHelp) { |
| show_help(getprogname()); |
| } |
| |
| exit(EXIT_FAILURE); |
| } |
| |
| static char *parseTime(log_time &t, const char *cp) { |
| |
| char *ep = t.strptime(cp, "%m-%d %H:%M:%S.%q"); |
| if (ep) { |
| return ep; |
| } |
| ep = t.strptime(cp, "%Y-%m-%d %H:%M:%S.%q"); |
| if (ep) { |
| return ep; |
| } |
| return t.strptime(cp, "%s.%q"); |
| } |
| |
| // Find last logged line in <outputFileName>, or <outputFileName>.1 |
| static log_time lastLogTime(char *outputFileName) { |
| log_time retval(log_time::EPOCH); |
| if (!outputFileName) { |
| return retval; |
| } |
| |
| std::string directory; |
| char *file = strrchr(outputFileName, '/'); |
| if (!file) { |
| directory = "."; |
| file = outputFileName; |
| } else { |
| *file = '\0'; |
| directory = outputFileName; |
| *file = '/'; |
| ++file; |
| } |
| |
| std::unique_ptr<DIR, int(*)(DIR*)> |
| dir(opendir(directory.c_str()), closedir); |
| if (!dir.get()) { |
| return retval; |
| } |
| |
| log_time now(android_log_clockid()); |
| |
| size_t len = strlen(file); |
| log_time modulo(0, NS_PER_SEC); |
| struct dirent *dp; |
| |
| while ((dp = readdir(dir.get())) != NULL) { |
| if ((dp->d_type != DT_REG) || |
| (strncmp(dp->d_name, file, len) != 0) || |
| (dp->d_name[len] && |
| ((dp->d_name[len] != '.') || |
| (strtoll(dp->d_name + 1, NULL, 10) != 1)))) { |
| continue; |
| } |
| |
| std::string file_name = directory; |
| file_name += "/"; |
| file_name += dp->d_name; |
| std::string file; |
| if (!android::base::ReadFileToString(file_name, &file)) { |
| continue; |
| } |
| |
| bool found = false; |
| for (const auto& line : android::base::Split(file, "\n")) { |
| log_time t(log_time::EPOCH); |
| char *ep = parseTime(t, line.c_str()); |
| if (!ep || (*ep != ' ')) { |
| continue; |
| } |
| // determine the time precision of the logs (eg: msec or usec) |
| for (unsigned long mod = 1UL; mod < modulo.tv_nsec; mod *= 10) { |
| if (t.tv_nsec % (mod * 10)) { |
| modulo.tv_nsec = mod; |
| break; |
| } |
| } |
| // We filter any times later than current as we may not have the |
| // year stored with each log entry. Also, since it is possible for |
| // entries to be recorded out of order (very rare) we select the |
| // maximum we find just in case. |
| if ((t < now) && (t > retval)) { |
| retval = t; |
| found = true; |
| } |
| } |
| // We count on the basename file to be the definitive end, so stop here. |
| if (!dp->d_name[len] && found) { |
| break; |
| } |
| } |
| if (retval == log_time::EPOCH) { |
| return retval; |
| } |
| // tail_time prints matching or higher, round up by the modulo to prevent |
| // a replay of the last entry we have just checked. |
| retval += modulo; |
| return retval; |
| } |
| |
| } /* namespace android */ |
| |
| |
| int main(int argc, char **argv) |
| { |
| using namespace android; |
| int err; |
| int hasSetLogFormat = 0; |
| int clearLog = 0; |
| int getLogSize = 0; |
| unsigned long setLogSize = 0; |
| int getPruneList = 0; |
| char *setPruneList = NULL; |
| char *setId = NULL; |
| int printStatistics = 0; |
| int mode = ANDROID_LOG_RDONLY; |
| const char *forceFilters = NULL; |
| log_device_t* devices = NULL; |
| log_device_t* dev; |
| bool printDividers = false; |
| struct logger_list *logger_list; |
| size_t tail_lines = 0; |
| log_time tail_time(log_time::EPOCH); |
| size_t pid = 0; |
| bool got_t = false; |
| |
| signal(SIGPIPE, exit); |
| |
| g_logformat = android_log_format_new(); |
| |
| if (argc == 2 && 0 == strcmp(argv[1], "--help")) { |
| show_help(argv[0]); |
| return EXIT_SUCCESS; |
| } |
| |
| for (;;) { |
| int ret; |
| |
| int option_index = 0; |
| // list of long-argument only strings for later comparison |
| static const char pid_str[] = "pid"; |
| static const char id_str[] = "id"; |
| static const char wrap_str[] = "wrap"; |
| static const char print_str[] = "print"; |
| static const struct option long_options[] = { |
| { "binary", no_argument, NULL, 'B' }, |
| { "buffer", required_argument, NULL, 'b' }, |
| { "buffer-size", optional_argument, NULL, 'g' }, |
| { "clear", no_argument, NULL, 'c' }, |
| { "dividers", no_argument, NULL, 'D' }, |
| { "file", required_argument, NULL, 'f' }, |
| { "format", required_argument, NULL, 'v' }, |
| // hidden and undocumented reserved alias for --regex |
| { "grep", required_argument, NULL, 'e' }, |
| // hidden and undocumented reserved alias for --max-count |
| { "head", required_argument, NULL, 'm' }, |
| { id_str, required_argument, NULL, 0 }, |
| { "last", no_argument, NULL, 'L' }, |
| { "max-count", required_argument, NULL, 'm' }, |
| { pid_str, required_argument, NULL, 0 }, |
| { print_str, no_argument, NULL, 0 }, |
| { "prune", optional_argument, NULL, 'p' }, |
| { "regex", required_argument, NULL, 'e' }, |
| { "rotate-count", required_argument, NULL, 'n' }, |
| { "rotate-kbytes", required_argument, NULL, 'r' }, |
| { "statistics", no_argument, NULL, 'S' }, |
| // hidden and undocumented reserved alias for -t |
| { "tail", required_argument, NULL, 't' }, |
| // support, but ignore and do not document, the optional argument |
| { wrap_str, optional_argument, NULL, 0 }, |
| { NULL, 0, NULL, 0 } |
| }; |
| |
| ret = getopt_long(argc, argv, ":cdDLt:T:gG:sQf:r:n:v:b:BSpP:m:e:", |
| long_options, &option_index); |
| |
| if (ret < 0) { |
| break; |
| } |
| |
| switch (ret) { |
| case 0: |
| // only long options |
| if (long_options[option_index].name == pid_str) { |
| // ToDo: determine runtime PID_MAX? |
| if (!getSizeTArg(optarg, &pid, 1)) { |
| logcat_panic(true, "%s %s out of range\n", |
| long_options[option_index].name, optarg); |
| } |
| break; |
| } |
| if (long_options[option_index].name == wrap_str) { |
| mode |= ANDROID_LOG_WRAP | |
| ANDROID_LOG_RDONLY | |
| ANDROID_LOG_NONBLOCK; |
| // ToDo: implement API that supports setting a wrap timeout |
| size_t dummy = ANDROID_LOG_WRAP_DEFAULT_TIMEOUT; |
| if (optarg && !getSizeTArg(optarg, &dummy, 1)) { |
| logcat_panic(true, "%s %s out of range\n", |
| long_options[option_index].name, optarg); |
| } |
| if (dummy != ANDROID_LOG_WRAP_DEFAULT_TIMEOUT) { |
| fprintf(stderr, |
| "WARNING: %s %u seconds, ignoring %zu\n", |
| long_options[option_index].name, |
| ANDROID_LOG_WRAP_DEFAULT_TIMEOUT, dummy); |
| } |
| break; |
| } |
| if (long_options[option_index].name == print_str) { |
| g_printItAnyways = true; |
| break; |
| } |
| if (long_options[option_index].name == id_str) { |
| setId = optarg && optarg[0] ? optarg : NULL; |
| break; |
| } |
| break; |
| |
| case 's': |
| // default to all silent |
| android_log_addFilterRule(g_logformat, "*:s"); |
| break; |
| |
| case 'c': |
| clearLog = 1; |
| mode |= ANDROID_LOG_WRONLY; |
| break; |
| |
| case 'L': |
| mode |= ANDROID_LOG_RDONLY | ANDROID_LOG_PSTORE | ANDROID_LOG_NONBLOCK; |
| break; |
| |
| case 'd': |
| mode |= ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK; |
| break; |
| |
| case 't': |
| got_t = true; |
| mode |= ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK; |
| /* FALLTHRU */ |
| case 'T': |
| if (strspn(optarg, "0123456789") != strlen(optarg)) { |
| char *cp = parseTime(tail_time, optarg); |
| if (!cp) { |
| logcat_panic(false, "-%c \"%s\" not in time format\n", |
| ret, optarg); |
| } |
| if (*cp) { |
| char c = *cp; |
| *cp = '\0'; |
| fprintf(stderr, |
| "WARNING: -%c \"%s\"\"%c%s\" time truncated\n", |
| ret, optarg, c, cp + 1); |
| *cp = c; |
| } |
| } else { |
| if (!getSizeTArg(optarg, &tail_lines, 1)) { |
| fprintf(stderr, |
| "WARNING: -%c %s invalid, setting to 1\n", |
| ret, optarg); |
| tail_lines = 1; |
| } |
| } |
| break; |
| |
| case 'D': |
| printDividers = true; |
| break; |
| |
| case 'e': |
| g_regex = new pcrecpp::RE(optarg); |
| break; |
| |
| case 'm': { |
| char *end = NULL; |
| if (!getSizeTArg(optarg, &g_maxCount)) { |
| logcat_panic(false, "-%c \"%s\" isn't an " |
| "integer greater than zero\n", ret, optarg); |
| } |
| } |
| break; |
| |
| case 'g': |
| if (!optarg) { |
| getLogSize = 1; |
| break; |
| } |
| // FALLTHRU |
| |
| case 'G': { |
| char *cp; |
| if (strtoll(optarg, &cp, 0) > 0) { |
| setLogSize = strtoll(optarg, &cp, 0); |
| } else { |
| setLogSize = 0; |
| } |
| |
| switch(*cp) { |
| case 'g': |
| case 'G': |
| setLogSize *= 1024; |
| /* FALLTHRU */ |
| case 'm': |
| case 'M': |
| setLogSize *= 1024; |
| /* FALLTHRU */ |
| case 'k': |
| case 'K': |
| setLogSize *= 1024; |
| /* FALLTHRU */ |
| case '\0': |
| break; |
| |
| default: |
| setLogSize = 0; |
| } |
| |
| if (!setLogSize) { |
| fprintf(stderr, "ERROR: -G <num><multiplier>\n"); |
| return EXIT_FAILURE; |
| } |
| } |
| break; |
| |
| case 'p': |
| if (!optarg) { |
| getPruneList = 1; |
| break; |
| } |
| // FALLTHRU |
| |
| case 'P': |
| setPruneList = optarg; |
| break; |
| |
| case 'b': { |
| unsigned idMask = 0; |
| while ((optarg = strtok(optarg, ",:; \t\n\r\f")) != NULL) { |
| if (strcmp(optarg, "default") == 0) { |
| idMask |= (1 << LOG_ID_MAIN) | |
| (1 << LOG_ID_SYSTEM) | |
| (1 << LOG_ID_CRASH); |
| } else if (strcmp(optarg, "all") == 0) { |
| idMask = (unsigned)-1; |
| } else { |
| log_id_t log_id = android_name_to_log_id(optarg); |
| const char *name = android_log_id_to_name(log_id); |
| |
| if (strcmp(name, optarg) != 0) { |
| logcat_panic(true, "unknown buffer %s\n", optarg); |
| } |
| idMask |= (1 << log_id); |
| } |
| optarg = NULL; |
| } |
| |
| for (int i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) { |
| const char *name = android_log_id_to_name((log_id_t)i); |
| log_id_t log_id = android_name_to_log_id(name); |
| |
| if (log_id != (log_id_t)i) { |
| continue; |
| } |
| if ((idMask & (1 << i)) == 0) { |
| continue; |
| } |
| |
| bool found = false; |
| for (dev = devices; dev; dev = dev->next) { |
| if (!strcmp(name, dev->device)) { |
| found = true; |
| break; |
| } |
| if (!dev->next) { |
| break; |
| } |
| } |
| if (found) { |
| continue; |
| } |
| |
| bool binary = !strcmp(name, "events") || |
| !strcmp(name, "security"); |
| log_device_t* d = new log_device_t(name, binary); |
| |
| if (dev) { |
| dev->next = d; |
| dev = d; |
| } else { |
| devices = dev = d; |
| } |
| g_devCount++; |
| } |
| } |
| break; |
| |
| case 'B': |
| g_printBinary = 1; |
| break; |
| |
| case 'f': |
| if ((tail_time == log_time::EPOCH) && (tail_lines == 0)) { |
| tail_time = lastLogTime(optarg); |
| } |
| // redirect output to a file |
| g_outputFileName = optarg; |
| break; |
| |
| case 'r': |
| if (!getSizeTArg(optarg, &g_logRotateSizeKBytes, 1)) { |
| logcat_panic(true, "Invalid parameter %s to -r\n", optarg); |
| } |
| break; |
| |
| case 'n': |
| if (!getSizeTArg(optarg, &g_maxRotatedLogs, 1)) { |
| logcat_panic(true, "Invalid parameter %s to -n\n", optarg); |
| } |
| break; |
| |
| case 'v': |
| err = setLogFormat (optarg); |
| if (err < 0) { |
| logcat_panic(true, "Invalid parameter %s to -v\n", optarg); |
| } |
| hasSetLogFormat |= err; |
| break; |
| |
| case 'Q': |
| /* this is a *hidden* option used to start a version of logcat */ |
| /* in an emulated device only. it basically looks for androidboot.logcat= */ |
| /* on the kernel command line. If something is found, it extracts a log filter */ |
| /* and uses it to run the program. If nothing is found, the program should */ |
| /* quit immediately */ |
| #define KERNEL_OPTION "androidboot.logcat=" |
| #define CONSOLE_OPTION "androidboot.console=" |
| { |
| int fd; |
| char* logcat; |
| char* console; |
| int force_exit = 1; |
| static char cmdline[1024]; |
| |
| fd = open("/proc/cmdline", O_RDONLY); |
| if (fd >= 0) { |
| int n = read(fd, cmdline, sizeof(cmdline)-1 ); |
| if (n < 0) n = 0; |
| cmdline[n] = 0; |
| close(fd); |
| } else { |
| cmdline[0] = 0; |
| } |
| |
| logcat = strstr( cmdline, KERNEL_OPTION ); |
| console = strstr( cmdline, CONSOLE_OPTION ); |
| if (logcat != NULL) { |
| 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) { |
| return EXIT_SUCCESS; |
| } |
| |
| /* 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; |
| |
| case ':': |
| logcat_panic(true, "Option -%c needs an argument\n", optopt); |
| break; |
| |
| default: |
| logcat_panic(true, "Unrecognized Option %c\n", optopt); |
| break; |
| } |
| } |
| |
| if (g_maxCount && got_t) { |
| logcat_panic(true, "Cannot use -m (--max-count) and -t together\n"); |
| } |
| if (g_printItAnyways && (!g_regex || !g_maxCount)) { |
| // One day it would be nice if --print -v color and --regex <expr> |
| // could play with each other and show regex highlighted content. |
| fprintf(stderr, "WARNING: " |
| "--print ignored, to be used in combination with\n" |
| " " |
| "--regex <expr> and --max-count <N>\n"); |
| g_printItAnyways = false; |
| } |
| |
| if (!devices) { |
| dev = devices = new log_device_t("main", false); |
| g_devCount = 1; |
| if (android_name_to_log_id("system") == LOG_ID_SYSTEM) { |
| dev = dev->next = new log_device_t("system", false); |
| g_devCount++; |
| } |
| if (android_name_to_log_id("crash") == LOG_ID_CRASH) { |
| dev = dev->next = new log_device_t("crash", false); |
| g_devCount++; |
| } |
| } |
| |
| if (g_logRotateSizeKBytes != 0 && g_outputFileName == NULL) { |
| logcat_panic(true, "-r requires -f as well\n"); |
| } |
| |
| if (setId != NULL) { |
| if (g_outputFileName == NULL) { |
| logcat_panic(true, "--id='%s' requires -f as well\n", setId); |
| } |
| |
| std::string file_name = android::base::StringPrintf("%s.id", g_outputFileName); |
| std::string file; |
| bool file_ok = android::base::ReadFileToString(file_name, &file); |
| android::base::WriteStringToFile(setId, file_name, |
| S_IRUSR | S_IWUSR, getuid(), getgid()); |
| if (!file_ok || (file.compare(setId) == 0)) { |
| setId = NULL; |
| } |
| } |
| |
| 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); |
| } |
| } else { |
| setLogFormat("threadtime"); |
| } |
| } |
| |
| if (forceFilters) { |
| err = android_log_addFilterString(g_logformat, forceFilters); |
| if (err < 0) { |
| logcat_panic(false, "Invalid filter expression in logcat args\n"); |
| } |
| } 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) { |
| logcat_panic(true, |
| "Invalid filter expression in ANDROID_LOG_TAGS\n"); |
| } |
| } |
| } else { |
| // Add from commandline |
| for (int i = optind ; i < argc ; i++) { |
| err = android_log_addFilterString(g_logformat, argv[i]); |
| |
| if (err < 0) { |
| logcat_panic(true, "Invalid filter expression '%s'\n", argv[i]); |
| } |
| } |
| } |
| |
| dev = devices; |
| if (tail_time != log_time::EPOCH) { |
| logger_list = android_logger_list_alloc_time(mode, tail_time, pid); |
| } else { |
| logger_list = android_logger_list_alloc(mode, tail_lines, pid); |
| } |
| const char *openDeviceFail = NULL; |
| const char *clearFail = NULL; |
| const char *setSizeFail = NULL; |
| const char *getSizeFail = NULL; |
| // We have three orthogonal actions below to clear, set log size and |
| // get log size. All sharing the same iteration loop. |
| while (dev) { |
| dev->logger_list = logger_list; |
| dev->logger = android_logger_open(logger_list, |
| android_name_to_log_id(dev->device)); |
| if (!dev->logger) { |
| openDeviceFail = openDeviceFail ?: dev->device; |
| dev = dev->next; |
| continue; |
| } |
| |
| if (clearLog || setId) { |
| if (g_outputFileName) { |
| int maxRotationCountDigits = |
| (g_maxRotatedLogs > 0) ? (int) (floor(log10(g_maxRotatedLogs) + 1)) : 0; |
| |
| for (int i = g_maxRotatedLogs ; i >= 0 ; --i) { |
| std::string file; |
| |
| if (i == 0) { |
| file = android::base::StringPrintf("%s", g_outputFileName); |
| } else { |
| file = android::base::StringPrintf("%s.%.*d", |
| g_outputFileName, maxRotationCountDigits, i); |
| } |
| |
| if (file.length() == 0) { |
| perror("while clearing log files"); |
| clearFail = clearFail ?: dev->device; |
| break; |
| } |
| |
| err = unlink(file.c_str()); |
| |
| if (err < 0 && errno != ENOENT && clearFail == NULL) { |
| perror("while clearing log files"); |
| clearFail = dev->device; |
| } |
| } |
| } else if (android_logger_clear(dev->logger)) { |
| clearFail = clearFail ?: dev->device; |
| } |
| } |
| |
| if (setLogSize) { |
| if (android_logger_set_log_size(dev->logger, setLogSize)) { |
| setSizeFail = setSizeFail ?: dev->device; |
| } |
| } |
| |
| if (getLogSize) { |
| long size = android_logger_get_log_size(dev->logger); |
| long readable = android_logger_get_log_readable_size(dev->logger); |
| |
| if ((size < 0) || (readable < 0)) { |
| getSizeFail = getSizeFail ?: dev->device; |
| } else { |
| printf("%s: ring buffer is %ld%sb (%ld%sb consumed), " |
| "max entry is %db, max payload is %db\n", dev->device, |
| value_of_size(size), multiplier_of_size(size), |
| value_of_size(readable), multiplier_of_size(readable), |
| (int) LOGGER_ENTRY_MAX_LEN, |
| (int) LOGGER_ENTRY_MAX_PAYLOAD); |
| } |
| } |
| |
| dev = dev->next; |
| } |
| // report any errors in the above loop and exit |
| if (openDeviceFail) { |
| logcat_panic(false, "Unable to open log device '%s'\n", openDeviceFail); |
| } |
| if (clearFail) { |
| logcat_panic(false, "failed to clear the '%s' log\n", clearFail); |
| } |
| if (setSizeFail) { |
| logcat_panic(false, "failed to set the '%s' log size\n", setSizeFail); |
| } |
| if (getSizeFail) { |
| logcat_panic(false, "failed to get the readable '%s' log size", |
| getSizeFail); |
| } |
| |
| if (setPruneList) { |
| size_t len = strlen(setPruneList); |
| /*extra 32 bytes are needed by android_logger_set_prune_list */ |
| size_t bLen = len + 32; |
| char *buf = NULL; |
| if (asprintf(&buf, "%-*s", (int)(bLen - 1), setPruneList) > 0) { |
| buf[len] = '\0'; |
| if (android_logger_set_prune_list(logger_list, buf, bLen)) { |
| logcat_panic(false, "failed to set the prune list"); |
| } |
| free(buf); |
| } else { |
| logcat_panic(false, "failed to set the prune list (alloc)"); |
| } |
| } |
| |
| if (printStatistics || getPruneList) { |
| size_t len = 8192; |
| char *buf; |
| |
| for (int retry = 32; |
| (retry >= 0) && ((buf = new char [len])); |
| delete [] buf, buf = NULL, --retry) { |
| if (getPruneList) { |
| android_logger_get_prune_list(logger_list, buf, len); |
| } else { |
| android_logger_get_statistics(logger_list, buf, len); |
| } |
| buf[len-1] = '\0'; |
| if (atol(buf) < 3) { |
| delete [] buf; |
| buf = NULL; |
| break; |
| } |
| size_t ret = atol(buf) + 1; |
| if (ret <= len) { |
| len = ret; |
| break; |
| } |
| len = ret; |
| } |
| |
| if (!buf) { |
| logcat_panic(false, "failed to read data"); |
| } |
| |
| // 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; |
| } |
| if (*cp == '\n') { |
| ++cp; |
| } |
| } |
| |
| printf("%s", cp); |
| delete [] buf; |
| return EXIT_SUCCESS; |
| } |
| |
| if (getLogSize) { |
| return EXIT_SUCCESS; |
| } |
| if (setLogSize || setPruneList) { |
| return EXIT_SUCCESS; |
| } |
| if (clearLog) { |
| return EXIT_SUCCESS; |
| } |
| |
| setupOutputAndSchedulingPolicy((mode & ANDROID_LOG_NONBLOCK) == 0); |
| |
| //LOG_EVENT_INT(10, 12345); |
| //LOG_EVENT_LONG(11, 0x1122334455667788LL); |
| //LOG_EVENT_STRING(0, "whassup, doc?"); |
| |
| dev = NULL; |
| log_device_t unexpected("unexpected", false); |
| |
| while (!g_maxCount || (g_printCount < g_maxCount)) { |
| struct log_msg log_msg; |
| log_device_t* d; |
| int ret = android_logger_list_read(logger_list, &log_msg); |
| |
| if (ret == 0) { |
| logcat_panic(false, "read: unexpected EOF!\n"); |
| } |
| |
| if (ret < 0) { |
| if (ret == -EAGAIN) { |
| break; |
| } |
| |
| if (ret == -EIO) { |
| logcat_panic(false, "read: unexpected EOF!\n"); |
| } |
| if (ret == -EINVAL) { |
| logcat_panic(false, "read: unexpected length.\n"); |
| } |
| logcat_panic(false, "logcat read failure"); |
| } |
| |
| for (d = devices; d; d = d->next) { |
| if (android_name_to_log_id(d->device) == log_msg.id()) { |
| break; |
| } |
| } |
| if (!d) { |
| g_devCount = 2; // set to Multiple |
| d = &unexpected; |
| d->binary = log_msg.id() == LOG_ID_EVENTS; |
| } |
| |
| if (dev != d) { |
| dev = d; |
| maybePrintStart(dev, printDividers); |
| } |
| if (g_printBinary) { |
| printBinary(&log_msg); |
| } else { |
| processBuffer(dev, &log_msg); |
| } |
| } |
| |
| android_logger_list_free(logger_list); |
| |
| return EXIT_SUCCESS; |
| } |