| // Copyright 2006-2014 The Android Open Source Project |
| |
| #include <assert.h> |
| #include <ctype.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdarg.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <time.h> |
| #include <unistd.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <arpa/inet.h> |
| |
| #include <cutils/sockets.h> |
| #include <log/log.h> |
| #include <log/log_read.h> |
| #include <log/logger.h> |
| #include <log/logd.h> |
| #include <log/logprint.h> |
| #include <log/event_tag_map.h> |
| |
| #define DEFAULT_LOG_ROTATE_SIZE_KBYTES 16 |
| #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; |
| char label; |
| |
| log_device_t* next; |
| |
| log_device_t(const char* d, bool b, char l) { |
| device = d; |
| binary = b; |
| label = l; |
| next = NULL; |
| printed = false; |
| } |
| }; |
| |
| namespace android { |
| |
| /* Global Variables */ |
| |
| static const char * g_outputFileName = NULL; |
| static int g_logRotateSizeKBytes = 0; // 0 means "no log rotation" |
| static int g_maxRotatedLogs = DEFAULT_MAX_ROTATED_LOGS; // 0 means "unbounded" |
| static int g_outFD = -1; |
| static off_t g_outByteCount = 0; |
| static int g_printBinary = 0; |
| static int g_devCount = 0; |
| |
| static EventTagMap* g_eventTagMap = NULL; |
| |
| 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); |
| |
| for (int i = g_maxRotatedLogs ; i > 0 ; i--) { |
| char *file0, *file1; |
| |
| asprintf(&file1, "%s.%d", g_outputFileName, i); |
| |
| if (i - 1 == 0) { |
| asprintf(&file0, "%s", g_outputFileName); |
| } else { |
| asprintf(&file0, "%s.%d", g_outputFileName, i - 1); |
| } |
| |
| err = rename (file0, file1); |
| |
| if (err < 0 && errno != ENOENT) { |
| perror("while rotating log files"); |
| } |
| |
| free(file1); |
| free(file0); |
| } |
| |
| g_outFD = openLogFile (g_outputFileName); |
| |
| if (g_outFD < 0) { |
| perror ("couldn't open output file"); |
| exit(-1); |
| } |
| |
| g_outByteCount = 0; |
| |
| } |
| |
| void printBinary(struct log_msg *buf) |
| { |
| size_t size = buf->len(); |
| |
| TEMP_FAILURE_RETRY(write(g_outFD, buf, size)); |
| } |
| |
| static void processBuffer(log_device_t* dev, struct log_msg *buf) |
| { |
| int bytesWritten = 0; |
| int err; |
| AndroidLogEntry entry; |
| char binaryMsgBuf[1024]; |
| |
| if (dev->binary) { |
| err = android_log_processBinaryLogBuffer(&buf->entry_v1, &entry, |
| g_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)) { |
| if (false && g_devCount > 1) { |
| binaryMsgBuf[0] = dev->label; |
| binaryMsgBuf[1] = ' '; |
| bytesWritten = write(g_outFD, binaryMsgBuf, 2); |
| if (bytesWritten < 0) { |
| perror("output error"); |
| exit(-1); |
| } |
| } |
| |
| bytesWritten = android_log_printLogLine(g_logformat, g_outFD, &entry); |
| |
| if (bytesWritten < 0) { |
| perror("output error"); |
| exit(-1); |
| } |
| } |
| |
| 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) { |
| if (!dev->printed) { |
| dev->printed = true; |
| if (g_devCount > 1 && !g_printBinary) { |
| char buf[1024]; |
| snprintf(buf, sizeof(buf), "--------- beginning of %s\n", |
| dev->device); |
| if (write(g_outFD, buf, strlen(buf)) < 0) { |
| perror("output error"); |
| exit(-1); |
| } |
| } |
| } |
| } |
| |
| static void setupOutput() |
| { |
| |
| if (g_outputFileName == NULL) { |
| g_outFD = STDOUT_FILENO; |
| |
| } else { |
| struct stat statbuf; |
| |
| g_outFD = openLogFile (g_outputFileName); |
| |
| if (g_outFD < 0) { |
| perror ("couldn't open output file"); |
| exit(-1); |
| } |
| |
| fstat(g_outFD, &statbuf); |
| |
| 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.\n" |
| " Like specifying filterspec '*:s'\n" |
| " -f <filename> Log to file. Default to stdout\n" |
| " -r [<kbytes>] Rotate log every kbytes. (16 if unspecified). Requires -f\n" |
| " -n <count> Sets max number of rotated logs to <count>, default 4\n" |
| " -v <format> Sets the log print format, where <format> is one of:\n\n" |
| " brief process tag thread raw time threadtime long\n\n" |
| " -c clear (flush) the entire log and exit\n" |
| " -d dump the log and then exit (don't block)\n" |
| " -t <count> print only the most recent <count> lines (implies -d)\n" |
| " -T <count> print only the most recent <count> lines (does not imply -d)\n" |
| " -g get the size of the log's ring buffer and exit\n" |
| " -b <buffer> Request alternate ring buffer, 'main', 'system', 'radio',\n" |
| " 'events', 'crash' or 'all'. Multiple -b parameters are\n" |
| " allowed and results are interleaved. The default is\n" |
| " -b main -b system -b crash.\n" |
| " -B output the log in binary.\n" |
| " -S output statistics.\n" |
| " -G <size> set size of log ring buffer, may suffix with K or M.\n" |
| " -p 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> ...' set prune white and ~black list, using same format as\n" |
| " printed above. Must be quoted.\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\n" |
| " D Debug\n" |
| " I Info\n" |
| " W Warn\n" |
| " E Error\n" |
| " F Fatal\n" |
| " S Silent (supress all output)\n" |
| "\n'*' means '*:d' and <tag> by itself means <tag>:v\n" |
| "\nIf not specified on the commandline, filterspec is set from ANDROID_LOG_TAGS.\n" |
| "If no filterspec is found, filter defaults to '*:I'\n" |
| "\nIf not specified with -v, format is set from ANDROID_PRINTF_LOG\n" |
| "or defaults to \"brief\"\n\n"); |
| |
| |
| |
| } |
| |
| |
| } /* namespace android */ |
| |
| 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; |
| } |
| |
| android_log_setPrintFormat(g_logformat, format); |
| |
| return 0; |
| } |
| |
| extern "C" void logprint_run_tests(void); |
| |
| int main(int argc, char **argv) |
| { |
| int err; |
| int hasSetLogFormat = 0; |
| int clearLog = 0; |
| int getLogSize = 0; |
| unsigned long setLogSize = 0; |
| int getPruneList = 0; |
| char *setPruneList = NULL; |
| int printStatistics = 0; |
| int mode = O_RDONLY; |
| const char *forceFilters = NULL; |
| log_device_t* devices = NULL; |
| log_device_t* dev; |
| bool needBinary = false; |
| struct logger_list *logger_list; |
| unsigned int tail_lines = 0; |
| log_time tail_time(log_time::EPOCH); |
| |
| signal(SIGPIPE, exit); |
| |
| g_logformat = android_log_format_new(); |
| |
| if (argc == 2 && 0 == strcmp(argv[1], "--test")) { |
| logprint_run_tests(); |
| exit(0); |
| } |
| |
| if (argc == 2 && 0 == strcmp(argv[1], "--help")) { |
| android::show_help(argv[0]); |
| exit(0); |
| } |
| |
| for (;;) { |
| int ret; |
| |
| ret = getopt(argc, argv, "cdt:T:gG:sQf:r::n:v:b:BSpP:"); |
| |
| if (ret < 0) { |
| break; |
| } |
| |
| switch(ret) { |
| case 's': |
| // default to all silent |
| android_log_addFilterRule(g_logformat, "*:s"); |
| break; |
| |
| case 'c': |
| clearLog = 1; |
| mode = O_WRONLY; |
| break; |
| |
| case 'd': |
| mode = O_RDONLY | O_NDELAY; |
| break; |
| |
| case 't': |
| mode = O_RDONLY | O_NDELAY; |
| /* FALLTHRU */ |
| case 'T': |
| if (strspn(optarg, "0123456789") != strlen(optarg)) { |
| char *cp = tail_time.strptime(optarg, |
| log_time::default_format); |
| if (!cp) { |
| fprintf(stderr, |
| "ERROR: -%c \"%s\" not in \"%s\" time format\n", |
| ret, optarg, log_time::default_format); |
| exit(1); |
| } |
| 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 { |
| tail_lines = atoi(optarg); |
| if (!tail_lines) { |
| fprintf(stderr, |
| "WARNING: -%c %s invalid, setting to 1\n", |
| ret, optarg); |
| tail_lines = 1; |
| } |
| } |
| break; |
| |
| case 'g': |
| getLogSize = 1; |
| break; |
| |
| case 'G': { |
| // would use atol if not for the multiplier |
| char *cp = optarg; |
| setLogSize = 0; |
| while (('0' <= *cp) && (*cp <= '9')) { |
| setLogSize *= 10; |
| setLogSize += *cp - '0'; |
| ++cp; |
| } |
| |
| 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"); |
| exit(1); |
| } |
| } |
| break; |
| |
| case 'p': |
| getPruneList = 1; |
| break; |
| |
| case 'P': |
| setPruneList = optarg; |
| break; |
| |
| case 'b': { |
| if (strcmp(optarg, "all") == 0) { |
| while (devices) { |
| dev = devices; |
| devices = dev->next; |
| delete dev; |
| } |
| |
| dev = devices = new log_device_t("main", false, 'm'); |
| android::g_devCount = 1; |
| if (android_name_to_log_id("system") == LOG_ID_SYSTEM) { |
| dev->next = new log_device_t("system", false, 's'); |
| if (dev->next) { |
| dev = dev->next; |
| android::g_devCount++; |
| } |
| } |
| if (android_name_to_log_id("radio") == LOG_ID_RADIO) { |
| dev->next = new log_device_t("radio", false, 'r'); |
| if (dev->next) { |
| dev = dev->next; |
| android::g_devCount++; |
| } |
| } |
| if (android_name_to_log_id("events") == LOG_ID_EVENTS) { |
| dev->next = new log_device_t("events", true, 'e'); |
| if (dev->next) { |
| dev = dev->next; |
| android::g_devCount++; |
| needBinary = true; |
| } |
| } |
| if (android_name_to_log_id("crash") == LOG_ID_CRASH) { |
| dev->next = new log_device_t("crash", false, 'c'); |
| if (dev->next) { |
| android::g_devCount++; |
| } |
| } |
| break; |
| } |
| |
| bool binary = strcmp(optarg, "events") == 0; |
| if (binary) { |
| needBinary = true; |
| } |
| |
| if (devices) { |
| dev = devices; |
| while (dev->next) { |
| dev = dev->next; |
| } |
| dev->next = new log_device_t(optarg, binary, optarg[0]); |
| } else { |
| devices = new log_device_t(optarg, binary, optarg[0]); |
| } |
| android::g_devCount++; |
| } |
| break; |
| |
| case 'B': |
| android::g_printBinary = 1; |
| break; |
| |
| case 'f': |
| // redirect output to a file |
| |
| android::g_outputFileName = optarg; |
| |
| break; |
| |
| case 'r': |
| if (optarg == NULL) { |
| android::g_logRotateSizeKBytes |
| = DEFAULT_LOG_ROTATE_SIZE_KBYTES; |
| } else { |
| long logRotateSize; |
| char *lastDigit; |
| |
| if (!isdigit(optarg[0])) { |
| fprintf(stderr,"Invalid parameter to -r\n"); |
| android::show_help(argv[0]); |
| exit(-1); |
| } |
| android::g_logRotateSizeKBytes = atoi(optarg); |
| } |
| break; |
| |
| case 'n': |
| if (!isdigit(optarg[0])) { |
| fprintf(stderr,"Invalid parameter to -r\n"); |
| android::show_help(argv[0]); |
| exit(-1); |
| } |
| |
| android::g_maxRotatedLogs = atoi(optarg); |
| break; |
| |
| case 'v': |
| err = setLogFormat (optarg); |
| if (err < 0) { |
| fprintf(stderr,"Invalid parameter to -v\n"); |
| android::show_help(argv[0]); |
| exit(-1); |
| } |
| |
| hasSetLogFormat = 1; |
| 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) |
| 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_name_to_log_id("crash") == LOG_ID_CRASH) { |
| if (devices->next) { |
| devices->next->next = new log_device_t("crash", false, 'c'); |
| } else { |
| devices->next = new log_device_t("crash", false, 'c'); |
| } |
| 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("failed to clear the log"); |
| exit(EXIT_FAILURE); |
| } |
| } |
| |
| if (setLogSize && android_logger_set_log_size(dev->logger, setLogSize)) { |
| perror("failed to set the log size"); |
| exit(EXIT_FAILURE); |
| } |
| |
| if (getLogSize) { |
| long size, readable; |
| |
| size = android_logger_get_log_size(dev->logger); |
| if (size < 0) { |
| perror("failed to get the log size"); |
| exit(EXIT_FAILURE); |
| } |
| |
| readable = android_logger_get_log_readable_size(dev->logger); |
| if (readable < 0) { |
| perror("failed to get the readable log size"); |
| 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; |
| } |
| |
| 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("failed to set the prune list"); |
| exit(EXIT_FAILURE); |
| } |
| } |
| |
| if (printStatistics || getPruneList) { |
| size_t len = 8192; |
| char *buf; |
| |
| for(int retry = 32; |
| (retry >= 0) && ((buf = new char [len])); |
| delete [] buf, --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'; |
| 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("failed to read data"); |
| 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; |
| } |
| if (*cp == '\n') { |
| ++cp; |
| } |
| } |
| |
| printf("%s", cp); |
| delete [] buf; |
| exit(0); |
| } |
| |
| |
| if (getLogSize) { |
| exit(0); |
| } |
| if (setLogSize || setPruneList) { |
| exit(0); |
| } |
| 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 failure"); |
| 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; |
| } |
