2011-10-07 21:06:39 +02:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <fcntl.h>
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#include <errno.h>
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#include <stddef.h>
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2011-10-14 04:44:50 +02:00
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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2011-12-19 22:35:46 +01:00
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#include <sys/poll.h>
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2011-12-21 18:17:22 +01:00
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#include <time.h>
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2011-12-21 18:59:56 +01:00
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#include <getopt.h>
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2011-10-07 21:06:39 +02:00
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2011-10-14 04:44:50 +02:00
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#include "sd-journal.h"
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#include "log.h"
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2011-12-21 18:17:22 +01:00
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#include "util.h"
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2011-12-21 18:59:56 +01:00
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#include "build.h"
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#include "pager.h"
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2011-10-12 05:29:08 +02:00
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2011-12-21 18:17:22 +01:00
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#define PRINT_THRESHOLD 128
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static enum {
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OUTPUT_SHORT,
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OUTPUT_VERBOSE,
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OUTPUT_EXPORT,
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OUTPUT_JSON,
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_OUTPUT_MAX
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2011-12-21 18:59:56 +01:00
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} arg_output = OUTPUT_SHORT;
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2011-12-21 18:17:22 +01:00
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static bool arg_follow = false;
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static bool arg_show_all = false;
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2011-12-21 18:59:56 +01:00
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static bool arg_no_pager = false;
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2011-12-21 18:17:22 +01:00
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static bool contains_unprintable(const void *p, size_t l) {
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const char *j;
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for (j = p; j < (const char *) p + l; j++)
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if (*j < ' ' || *j >= 127)
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return true;
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return false;
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}
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static int output_short(sd_journal *j, unsigned line) {
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int r;
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uint64_t realtime;
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time_t t;
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struct tm tm;
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char buf[64];
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const void *data;
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size_t length;
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size_t n = 0;
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assert(j);
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r = sd_journal_get_realtime_usec(j, &realtime);
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if (r < 0) {
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log_error("Failed to get realtime: %s", strerror(-r));
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return r;
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}
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t = (time_t) (realtime / USEC_PER_SEC);
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if (strftime(buf, sizeof(buf), "%b %d %H:%M:%S", localtime_r(&t, &tm)) <= 0) {
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log_error("Failed to format time.");
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return -EINVAL;
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}
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fputs(buf, stdout);
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n += strlen(buf);
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if (sd_journal_get_data(j, "_HOSTNAME", &data, &length) >= 0 &&
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(arg_show_all || (!contains_unprintable(data, length) &&
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length < PRINT_THRESHOLD))) {
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printf(" %.*s", (int) length - 10, ((const char*) data) + 10);
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n += length - 10 + 1;
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}
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if (sd_journal_get_data(j, "MESSAGE", &data, &length) >= 0) {
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if (arg_show_all)
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printf(" %.*s", (int) length - 8, ((const char*) data) + 8);
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else if (contains_unprintable(data, length))
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fputs(" [blob data]", stdout);
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else if (length - 8 + n < columns())
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printf(" %.*s", (int) length - 8, ((const char*) data) + 8);
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else if (n < columns()) {
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char *e;
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e = ellipsize_mem((const char *) data + 8, length - 8, columns() - n - 2, 90);
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if (!e)
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printf(" %.*s", (int) length - 8, ((const char*) data) + 8);
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else
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printf(" %s", e);
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free(e);
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}
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}
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fputc('\n', stdout);
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return 0;
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}
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static int output_verbose(sd_journal *j, unsigned line) {
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const void *data;
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size_t length;
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char *cursor;
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uint64_t realtime;
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char ts[FORMAT_TIMESTAMP_MAX];
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int r;
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assert(j);
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r = sd_journal_get_realtime_usec(j, &realtime);
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if (r < 0) {
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log_error("Failed to get realtime timestamp: %s", strerror(-r));
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return r;
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}
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r = sd_journal_get_cursor(j, &cursor);
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if (r < 0) {
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log_error("Failed to get cursor: %s", strerror(-r));
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return r;
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}
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printf("%s [%s]\n",
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format_timestamp(ts, sizeof(ts), realtime),
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cursor);
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free(cursor);
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SD_JOURNAL_FOREACH_DATA(j, data, length) {
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if (!arg_show_all && (length > PRINT_THRESHOLD ||
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contains_unprintable(data, length))) {
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const char *c;
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c = memchr(data, '=', length);
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if (!c) {
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log_error("Invalid field.");
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return -EINVAL;
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}
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printf("\t%.*s=[blob data]\n",
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(int) (c - (const char*) data),
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(const char*) data);
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} else
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printf("\t%.*s\n", (int) length, (const char*) data);
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}
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return 0;
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}
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static int output_export(sd_journal *j, unsigned line) {
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sd_id128_t boot_id;
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char sid[33];
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int r;
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usec_t realtime, monotonic;
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char *cursor;
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const void *data;
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size_t length;
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assert(j);
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r = sd_journal_get_realtime_usec(j, &realtime);
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if (r < 0) {
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log_error("Failed to get realtime timestamp: %s", strerror(-r));
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return r;
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}
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r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
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if (r < 0) {
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log_error("Failed to get monotonic timestamp: %s", strerror(-r));
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return r;
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}
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r = sd_journal_get_cursor(j, &cursor);
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if (r < 0) {
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log_error("Failed to get cursor: %s", strerror(-r));
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return r;
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}
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printf(".cursor=%s\n"
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".realtime=%llu\n"
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".monotonic=%llu\n"
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".boot_id=%s\n",
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cursor,
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(unsigned long long) realtime,
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(unsigned long long) monotonic,
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sd_id128_to_string(boot_id, sid));
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free(cursor);
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SD_JOURNAL_FOREACH_DATA(j, data, length) {
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if (contains_unprintable(data, length)) {
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const char *c;
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uint64_t le64;
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c = memchr(data, '=', length);
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if (!c) {
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log_error("Invalid field.");
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return -EINVAL;
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}
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fwrite(data, c - (const char*) data, 1, stdout);
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fputc('\n', stdout);
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le64 = htole64(length - (c - (const char*) data) - 1);
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fwrite(&le64, sizeof(le64), 1, stdout);
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fwrite(c + 1, length - (c - (const char*) data) - 1, 1, stdout);
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} else
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fwrite(data, length, 1, stdout);
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fputc('\n', stdout);
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}
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fputc('\n', stdout);
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return 0;
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}
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static void json_escape(const char* p, size_t l) {
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if (contains_unprintable(p, l)) {
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bool not_first = false;
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fputs("[ ", stdout);
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while (l > 0) {
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if (not_first)
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printf(", %u", (uint8_t) *p);
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else {
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not_first = true;
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printf("%u", (uint8_t) *p);
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}
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p++;
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l--;
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}
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fputs(" ]", stdout);
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} else {
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fputc('\"', stdout);
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while (l > 0) {
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if (*p == '"' || *p == '\\') {
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fputc('\\', stdout);
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fputc(*p, stdout);
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} else
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fputc(*p, stdout);
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p++;
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l--;
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}
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fputc('\"', stdout);
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}
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}
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static int output_json(sd_journal *j, unsigned line) {
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uint64_t realtime, monotonic;
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char *cursor;
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const void *data;
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size_t length;
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sd_id128_t boot_id;
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char sid[33];
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int r;
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assert(j);
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r = sd_journal_get_realtime_usec(j, &realtime);
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if (r < 0) {
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log_error("Failed to get realtime timestamp: %s", strerror(-r));
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return r;
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}
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r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
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if (r < 0) {
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log_error("Failed to get monotonic timestamp: %s", strerror(-r));
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return r;
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}
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r = sd_journal_get_cursor(j, &cursor);
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if (r < 0) {
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log_error("Failed to get cursor: %s", strerror(-r));
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return r;
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}
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if (line == 1)
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fputc('\n', stdout);
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else
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fputs(",\n", stdout);
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printf("{\n"
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"\t\".cursor\" : \"%s\",\n"
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"\t\".realtime\" : %llu,\n"
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"\t\".monotonic\" : %llu,\n"
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"\t\".boot_id\" : \"%s\"",
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cursor,
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(unsigned long long) realtime,
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(unsigned long long) monotonic,
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sd_id128_to_string(boot_id, sid));
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free(cursor);
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SD_JOURNAL_FOREACH_DATA(j, data, length) {
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const char *c;
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c = memchr(data, '=', length);
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if (!c) {
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log_error("Invalid field.");
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return -EINVAL;
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}
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fputs(",\n\t", stdout);
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json_escape(data, c - (const char*) data);
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fputs(" : ", stdout);
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json_escape(c + 1, length - (c - (const char*) data) - 1);
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}
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fputs("\n}", stdout);
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fflush(stdout);
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return 0;
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}
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static int (*output_funcs[_OUTPUT_MAX])(sd_journal*j, unsigned line) = {
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[OUTPUT_SHORT] = output_short,
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[OUTPUT_VERBOSE] = output_verbose,
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[OUTPUT_EXPORT] = output_export,
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[OUTPUT_JSON] = output_json
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};
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2011-12-19 22:35:46 +01:00
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2011-12-21 18:59:56 +01:00
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static int help(void) {
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printf("%s [OPTIONS...] {COMMAND} ...\n\n"
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"Send control commands to or query the login manager.\n\n"
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" -h --help Show this help\n"
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" --version Show package version\n"
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" --no-pager Do not pipe output into a pager\n"
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" -a --all Show all properties, including long and unprintable\n"
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" -f --follow Follow journal\n"
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" -o --output=STRING Change output mode (short, verbose, export, json)\n",
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program_invocation_short_name);
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return 0;
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}
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static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_VERSION = 0x100,
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ARG_NO_PAGER
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};
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version" , no_argument, NULL, ARG_VERSION },
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{ "no-pager", no_argument, NULL, ARG_NO_PAGER },
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{ "follow", no_argument, NULL, 'f' },
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{ "output", required_argument, NULL, 'o' },
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{ "all", no_argument, NULL, 'a' },
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{ NULL, 0, NULL, 0 }
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};
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|
|
|
|
int c;
|
|
|
|
|
|
|
|
assert(argc >= 0);
|
|
|
|
assert(argv);
|
|
|
|
|
|
|
|
while ((c = getopt_long(argc, argv, "hfo:a", options, NULL)) >= 0) {
|
|
|
|
|
|
|
|
switch (c) {
|
|
|
|
|
|
|
|
case 'h':
|
|
|
|
help();
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
case ARG_VERSION:
|
|
|
|
puts(PACKAGE_STRING);
|
|
|
|
puts(DISTRIBUTION);
|
|
|
|
puts(SYSTEMD_FEATURES);
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
case ARG_NO_PAGER:
|
|
|
|
arg_no_pager = true;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'f':
|
|
|
|
arg_follow = true;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'o':
|
|
|
|
if (streq(optarg, "short"))
|
|
|
|
arg_output = OUTPUT_SHORT;
|
|
|
|
else if (streq(optarg, "verbose"))
|
|
|
|
arg_output = OUTPUT_VERBOSE;
|
|
|
|
else if (streq(optarg, "export"))
|
|
|
|
arg_output = OUTPUT_EXPORT;
|
|
|
|
else if (streq(optarg, "json"))
|
|
|
|
arg_output = OUTPUT_JSON;
|
|
|
|
else {
|
|
|
|
log_error("Unknown output '%s'.", optarg);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 'a':
|
|
|
|
arg_show_all = true;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case '?':
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
default:
|
|
|
|
log_error("Unknown option code %c", c);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2011-10-07 21:06:39 +02:00
|
|
|
int main(int argc, char *argv[]) {
|
2011-12-19 22:35:46 +01:00
|
|
|
int r, i, fd;
|
2011-10-14 04:44:50 +02:00
|
|
|
sd_journal *j = NULL;
|
2011-12-21 18:17:22 +01:00
|
|
|
unsigned line = 0;
|
2011-10-14 04:44:50 +02:00
|
|
|
|
2011-10-07 21:06:39 +02:00
|
|
|
log_parse_environment();
|
|
|
|
log_open();
|
|
|
|
|
2011-12-21 18:59:56 +01:00
|
|
|
r = parse_argv(argc, argv);
|
|
|
|
if (r <= 0)
|
|
|
|
goto finish;
|
|
|
|
|
2011-12-29 15:00:57 +01:00
|
|
|
r = sd_journal_open(&j, 0);
|
2011-10-07 21:06:39 +02:00
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to open journal: %s", strerror(-r));
|
2011-10-14 04:44:50 +02:00
|
|
|
goto finish;
|
2011-10-07 21:06:39 +02:00
|
|
|
}
|
|
|
|
|
2011-12-21 18:59:56 +01:00
|
|
|
for (i = optind; i < argc; i++) {
|
2011-10-15 01:13:37 +02:00
|
|
|
r = sd_journal_add_match(j, argv[i], strlen(argv[i]));
|
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to add match: %s", strerror(-r));
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-12-19 22:35:46 +01:00
|
|
|
fd = sd_journal_get_fd(j);
|
|
|
|
if (fd < 0) {
|
|
|
|
log_error("Failed to get wakeup fd: %s", strerror(-fd));
|
|
|
|
goto finish;
|
|
|
|
}
|
2011-10-15 02:45:58 +02:00
|
|
|
|
2011-12-19 22:35:46 +01:00
|
|
|
r = sd_journal_seek_head(j);
|
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to seek to head: %s", strerror(-r));
|
|
|
|
goto finish;
|
|
|
|
}
|
2011-10-07 21:06:39 +02:00
|
|
|
|
2011-12-21 18:59:56 +01:00
|
|
|
if (!arg_no_pager && !arg_follow) {
|
|
|
|
columns();
|
|
|
|
pager_open();
|
|
|
|
}
|
|
|
|
|
|
|
|
if (arg_output == OUTPUT_JSON) {
|
2011-12-21 18:17:22 +01:00
|
|
|
fputc('[', stdout);
|
2011-12-21 18:59:56 +01:00
|
|
|
fflush(stdout);
|
|
|
|
}
|
2011-12-21 18:17:22 +01:00
|
|
|
|
2011-12-19 22:35:46 +01:00
|
|
|
for (;;) {
|
|
|
|
struct pollfd pollfd;
|
|
|
|
|
2011-12-21 18:59:56 +01:00
|
|
|
for (;;) {
|
|
|
|
r = sd_journal_next(j);
|
|
|
|
|
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to iterate through journal: %s", strerror(-r));
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (r == 0)
|
|
|
|
break;
|
|
|
|
|
2011-12-21 18:17:22 +01:00
|
|
|
line ++;
|
2011-12-19 22:35:46 +01:00
|
|
|
|
2011-12-21 18:17:22 +01:00
|
|
|
r = output_funcs[arg_output](j, line);
|
|
|
|
if (r < 0)
|
|
|
|
goto finish;
|
2011-10-07 21:06:39 +02:00
|
|
|
}
|
|
|
|
|
2011-12-19 22:35:46 +01:00
|
|
|
if (!arg_follow)
|
|
|
|
break;
|
|
|
|
|
|
|
|
zero(pollfd);
|
|
|
|
pollfd.fd = fd;
|
|
|
|
pollfd.events = POLLIN;
|
2011-10-07 21:06:39 +02:00
|
|
|
|
2011-12-19 22:35:46 +01:00
|
|
|
if (poll(&pollfd, 1, -1) < 0) {
|
|
|
|
if (errno == EINTR)
|
|
|
|
break;
|
2011-10-14 05:12:58 +02:00
|
|
|
|
2011-12-19 22:35:46 +01:00
|
|
|
log_error("poll(): %m");
|
|
|
|
r = -errno;
|
|
|
|
goto finish;
|
|
|
|
}
|
2011-10-15 02:45:58 +02:00
|
|
|
|
2011-12-19 22:35:46 +01:00
|
|
|
r = sd_journal_process(j);
|
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to process: %s", strerror(-r));
|
|
|
|
goto finish;
|
|
|
|
}
|
2011-11-08 18:20:03 +01:00
|
|
|
}
|
2011-10-07 21:06:39 +02:00
|
|
|
|
2011-12-21 18:17:22 +01:00
|
|
|
if (arg_output == OUTPUT_JSON)
|
|
|
|
fputs("\n]\n", stdout);
|
|
|
|
|
2011-10-07 21:06:39 +02:00
|
|
|
finish:
|
2011-10-14 04:44:50 +02:00
|
|
|
if (j)
|
|
|
|
sd_journal_close(j);
|
2011-10-07 21:06:39 +02:00
|
|
|
|
2011-12-21 18:59:56 +01:00
|
|
|
pager_close();
|
|
|
|
|
2011-10-14 04:44:50 +02:00
|
|
|
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
|
2011-10-07 21:06:39 +02:00
|
|
|
}
|