2e87a1fde9
Using wait_for_terminate_and_check() instead of wait_for_terminate() let's us simplify, shorten and unify the return value checking and logging of waitid(). Hence, let's use it all over the place.
1407 lines
46 KiB
C
1407 lines
46 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2012 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 Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser 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 <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/socket.h>
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#include <syslog.h>
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#include <time.h>
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#include <unistd.h>
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#include "sd-id128.h"
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#include "sd-journal.h"
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#include "alloc-util.h"
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#include "fd-util.h"
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#include "format-util.h"
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#include "hashmap.h"
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#include "hostname-util.h"
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#include "io-util.h"
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#include "journal-internal.h"
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#include "log.h"
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#include "logs-show.h"
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#include "macro.h"
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#include "output-mode.h"
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#include "parse-util.h"
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#include "process-util.h"
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#include "sparse-endian.h"
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#include "stdio-util.h"
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#include "string-table.h"
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#include "string-util.h"
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#include "strv.h"
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#include "terminal-util.h"
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#include "time-util.h"
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#include "utf8.h"
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#include "util.h"
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/* up to three lines (each up to 100 characters) or 300 characters, whichever is less */
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#define PRINT_LINE_THRESHOLD 3
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#define PRINT_CHAR_THRESHOLD 300
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#define JSON_THRESHOLD 4096
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static int print_catalog(FILE *f, sd_journal *j) {
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int r;
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_cleanup_free_ char *t = NULL, *z = NULL;
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r = sd_journal_get_catalog(j, &t);
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if (r < 0)
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return r;
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z = strreplace(strstrip(t), "\n", "\n-- ");
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if (!z)
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return log_oom();
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fputs("-- ", f);
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fputs(z, f);
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fputc('\n', f);
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return 0;
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}
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static int parse_field(const void *data, size_t length, const char *field, size_t field_len, char **target, size_t *target_len) {
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size_t nl;
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char *buf;
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assert(data);
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assert(field);
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assert(target);
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if (length < field_len)
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return 0;
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if (memcmp(data, field, field_len))
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return 0;
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nl = length - field_len;
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buf = newdup_suffix0(char, (const char*) data + field_len, nl);
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if (!buf)
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return log_oom();
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free(*target);
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*target = buf;
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if (target_len)
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*target_len = nl;
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return 1;
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}
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typedef struct ParseFieldVec {
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const char *field;
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size_t field_len;
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char **target;
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size_t *target_len;
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} ParseFieldVec;
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#define PARSE_FIELD_VEC_ENTRY(_field, _target, _target_len) \
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{ .field = _field, .field_len = strlen(_field), .target = _target, .target_len = _target_len }
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static int parse_fieldv(const void *data, size_t length, const ParseFieldVec *fields, unsigned n_fields) {
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unsigned i;
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for (i = 0; i < n_fields; i++) {
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const ParseFieldVec *f = &fields[i];
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int r;
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r = parse_field(data, length, f->field, f->field_len, f->target, f->target_len);
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if (r < 0)
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return r;
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else if (r > 0)
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break;
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}
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return 0;
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}
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static int field_set_test(Set *fields, const char *name, size_t n) {
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char *s = NULL;
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if (!fields)
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return 1;
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s = strndupa(name, n);
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if (!s)
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return log_oom();
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return set_get(fields, s) ? 1 : 0;
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}
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static bool shall_print(const char *p, size_t l, OutputFlags flags) {
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assert(p);
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if (flags & OUTPUT_SHOW_ALL)
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return true;
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if (l >= PRINT_CHAR_THRESHOLD)
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return false;
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if (!utf8_is_printable(p, l))
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return false;
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return true;
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}
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static bool print_multiline(FILE *f, unsigned prefix, unsigned n_columns, OutputFlags flags, int priority, const char* message, size_t message_len) {
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const char *color_on = "", *color_off = "";
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const char *pos, *end;
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bool ellipsized = false;
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int line = 0;
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if (flags & OUTPUT_COLOR) {
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if (priority <= LOG_ERR) {
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color_on = ANSI_HIGHLIGHT_RED;
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color_off = ANSI_NORMAL;
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} else if (priority <= LOG_NOTICE) {
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color_on = ANSI_HIGHLIGHT;
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color_off = ANSI_NORMAL;
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}
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}
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/* A special case: make sure that we print a newline when
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the message is empty. */
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if (message_len == 0)
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fputs("\n", f);
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for (pos = message;
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pos < message + message_len;
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pos = end + 1, line++) {
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bool continuation = line > 0;
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bool tail_line;
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int len;
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for (end = pos; end < message + message_len && *end != '\n'; end++)
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;
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len = end - pos;
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assert(len >= 0);
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/* We need to figure out when we are showing not-last line, *and*
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* will skip subsequent lines. In that case, we will put the dots
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* at the end of the line, instead of putting dots in the middle
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* or not at all.
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*/
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tail_line =
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line + 1 == PRINT_LINE_THRESHOLD ||
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end + 1 >= message + PRINT_CHAR_THRESHOLD;
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if (flags & (OUTPUT_FULL_WIDTH | OUTPUT_SHOW_ALL) ||
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(prefix + len + 1 < n_columns && !tail_line)) {
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fprintf(f, "%*s%s%.*s%s\n",
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continuation * prefix, "",
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color_on, len, pos, color_off);
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continue;
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}
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/* Beyond this point, ellipsization will happen. */
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ellipsized = true;
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if (prefix < n_columns && n_columns - prefix >= 3) {
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if (n_columns - prefix > (unsigned) len + 3)
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fprintf(f, "%*s%s%.*s...%s\n",
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continuation * prefix, "",
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color_on, len, pos, color_off);
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else {
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_cleanup_free_ char *e;
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e = ellipsize_mem(pos, len, n_columns - prefix,
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tail_line ? 100 : 90);
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if (!e)
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fprintf(f, "%*s%s%.*s%s\n",
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continuation * prefix, "",
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color_on, len, pos, color_off);
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else
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fprintf(f, "%*s%s%s%s\n",
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continuation * prefix, "",
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color_on, e, color_off);
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}
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} else
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fputs("...\n", f);
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if (tail_line)
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break;
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}
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return ellipsized;
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}
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static int output_timestamp_monotonic(FILE *f, sd_journal *j, const char *monotonic) {
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sd_id128_t boot_id;
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uint64_t t;
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int r;
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assert(f);
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assert(j);
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r = -ENXIO;
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if (monotonic)
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r = safe_atou64(monotonic, &t);
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if (r < 0)
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r = sd_journal_get_monotonic_usec(j, &t, &boot_id);
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if (r < 0)
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return log_error_errno(r, "Failed to get monotonic timestamp: %m");
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fprintf(f, "[%5"PRI_USEC".%06"PRI_USEC"]", t / USEC_PER_SEC, t % USEC_PER_SEC);
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return 1 + 5 + 1 + 6 + 1;
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}
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static int output_timestamp_realtime(FILE *f, sd_journal *j, OutputMode mode, OutputFlags flags, const char *realtime) {
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char buf[MAX(FORMAT_TIMESTAMP_MAX, 64)];
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struct tm *(*gettime_r)(const time_t *, struct tm *);
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struct tm tm;
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uint64_t x;
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time_t t;
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int r;
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assert(f);
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assert(j);
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r = -ENXIO;
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if (realtime)
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r = safe_atou64(realtime, &x);
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if (r < 0)
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r = sd_journal_get_realtime_usec(j, &x);
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if (r < 0)
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return log_error_errno(r, "Failed to get realtime timestamp: %m");
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if (x > USEC_TIMESTAMP_FORMATTABLE_MAX) {
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log_error("Timestamp cannot be printed");
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return -EINVAL;
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}
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if (mode == OUTPUT_SHORT_FULL) {
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const char *k;
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if (flags & OUTPUT_UTC)
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k = format_timestamp_utc(buf, sizeof(buf), x);
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else
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k = format_timestamp(buf, sizeof(buf), x);
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if (!k) {
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log_error("Failed to format timestamp.");
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return -EINVAL;
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}
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} else {
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char usec[7];
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gettime_r = (flags & OUTPUT_UTC) ? gmtime_r : localtime_r;
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t = (time_t) (x / USEC_PER_SEC);
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switch (mode) {
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case OUTPUT_SHORT_UNIX:
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xsprintf(buf, "%10"PRI_TIME".%06"PRIu64, t, x % USEC_PER_SEC);
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break;
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case OUTPUT_SHORT_ISO:
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if (strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S%z", gettime_r(&t, &tm)) <= 0) {
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log_error("Failed to format ISO time");
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return -EINVAL;
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}
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break;
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case OUTPUT_SHORT_ISO_PRECISE:
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/* No usec in strftime, so we leave space and copy over */
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if (strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S.xxxxxx%z", gettime_r(&t, &tm)) <= 0) {
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log_error("Failed to format ISO-precise time");
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return -EINVAL;
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}
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xsprintf(usec, "%06"PRI_USEC, x % USEC_PER_SEC);
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memcpy(buf + 20, usec, 6);
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break;
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case OUTPUT_SHORT:
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case OUTPUT_SHORT_PRECISE:
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if (strftime(buf, sizeof(buf), "%b %d %H:%M:%S", gettime_r(&t, &tm)) <= 0) {
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log_error("Failed to format syslog time");
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return -EINVAL;
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}
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if (mode == OUTPUT_SHORT_PRECISE) {
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size_t k;
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assert(sizeof(buf) > strlen(buf));
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k = sizeof(buf) - strlen(buf);
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r = snprintf(buf + strlen(buf), k, ".%06"PRIu64, x % USEC_PER_SEC);
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if (r <= 0 || (size_t) r >= k) { /* too long? */
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log_error("Failed to format precise time");
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return -EINVAL;
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}
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}
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break;
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default:
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assert_not_reached("Unknown time format");
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}
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}
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fputs(buf, f);
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return (int) strlen(buf);
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}
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static int output_short(
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FILE *f,
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sd_journal *j,
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OutputMode mode,
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unsigned n_columns,
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OutputFlags flags,
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Set *output_fields) {
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int r;
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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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_cleanup_free_ char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, *message = NULL, *realtime = NULL, *monotonic = NULL, *priority = NULL;
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size_t hostname_len = 0, identifier_len = 0, comm_len = 0, pid_len = 0, fake_pid_len = 0, message_len = 0, realtime_len = 0, monotonic_len = 0, priority_len = 0;
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int p = LOG_INFO;
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bool ellipsized = false;
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const ParseFieldVec fields[] = {
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PARSE_FIELD_VEC_ENTRY("_PID=", &pid, &pid_len),
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PARSE_FIELD_VEC_ENTRY("_COMM=", &comm, &comm_len),
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PARSE_FIELD_VEC_ENTRY("MESSAGE=", &message, &message_len),
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PARSE_FIELD_VEC_ENTRY("PRIORITY=", &priority, &priority_len),
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PARSE_FIELD_VEC_ENTRY("_HOSTNAME=", &hostname, &hostname_len),
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PARSE_FIELD_VEC_ENTRY("SYSLOG_PID=", &fake_pid, &fake_pid_len),
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PARSE_FIELD_VEC_ENTRY("SYSLOG_IDENTIFIER=", &identifier, &identifier_len),
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PARSE_FIELD_VEC_ENTRY("_SOURCE_REALTIME_TIMESTAMP=", &realtime, &realtime_len),
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PARSE_FIELD_VEC_ENTRY("_SOURCE_MONOTONIC_TIMESTAMP=", &monotonic, &monotonic_len),
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};
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assert(f);
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assert(j);
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/* Set the threshold to one bigger than the actual print
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* threshold, so that if the line is actually longer than what
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* we're willing to print, ellipsization will occur. This way
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* we won't output a misleading line without any indication of
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* truncation.
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*/
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sd_journal_set_data_threshold(j, flags & (OUTPUT_SHOW_ALL|OUTPUT_FULL_WIDTH) ? 0 : PRINT_CHAR_THRESHOLD + 1);
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JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
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r = parse_fieldv(data, length, fields, ELEMENTSOF(fields));
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if (r < 0)
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return r;
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}
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if (r == -EBADMSG) {
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log_debug_errno(r, "Skipping message we can't read: %m");
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return 0;
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}
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if (r < 0)
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return log_error_errno(r, "Failed to get journal fields: %m");
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|
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if (!message) {
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log_debug("Skipping message without MESSAGE= field.");
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return 0;
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}
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if (!(flags & OUTPUT_SHOW_ALL))
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strip_tab_ansi(&message, &message_len);
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|
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if (priority_len == 1 && *priority >= '0' && *priority <= '7')
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p = *priority - '0';
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|
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if (mode == OUTPUT_SHORT_MONOTONIC)
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r = output_timestamp_monotonic(f, j, monotonic);
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else
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r = output_timestamp_realtime(f, j, mode, flags, realtime);
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if (r < 0)
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return r;
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n += r;
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|
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if (flags & OUTPUT_NO_HOSTNAME) {
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/* Suppress display of the hostname if this is requested. */
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hostname = mfree(hostname);
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hostname_len = 0;
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}
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if (hostname && shall_print(hostname, hostname_len, flags)) {
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fprintf(f, " %.*s", (int) hostname_len, hostname);
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n += hostname_len + 1;
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}
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|
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if (identifier && shall_print(identifier, identifier_len, flags)) {
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fprintf(f, " %.*s", (int) identifier_len, identifier);
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n += identifier_len + 1;
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} else if (comm && shall_print(comm, comm_len, flags)) {
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fprintf(f, " %.*s", (int) comm_len, comm);
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n += comm_len + 1;
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|
} else
|
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fputs(" unknown", f);
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|
|
if (pid && shall_print(pid, pid_len, flags)) {
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fprintf(f, "[%.*s]", (int) pid_len, pid);
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n += pid_len + 2;
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} else if (fake_pid && shall_print(fake_pid, fake_pid_len, flags)) {
|
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fprintf(f, "[%.*s]", (int) fake_pid_len, fake_pid);
|
|
n += fake_pid_len + 2;
|
|
}
|
|
|
|
if (!(flags & OUTPUT_SHOW_ALL) && !utf8_is_printable(message, message_len)) {
|
|
char bytes[FORMAT_BYTES_MAX];
|
|
fprintf(f, ": [%s blob data]\n", format_bytes(bytes, sizeof(bytes), message_len));
|
|
} else {
|
|
fputs(": ", f);
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|
ellipsized |=
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print_multiline(f, n + 2, n_columns, flags, p, message, message_len);
|
|
}
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|
|
if (flags & OUTPUT_CATALOG)
|
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print_catalog(f, j);
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|
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return ellipsized;
|
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}
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|
|
static int output_verbose(
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FILE *f,
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sd_journal *j,
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OutputMode mode,
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unsigned n_columns,
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OutputFlags flags,
|
|
Set *output_fields) {
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|
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const void *data;
|
|
size_t length;
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|
_cleanup_free_ char *cursor = NULL;
|
|
uint64_t realtime = 0;
|
|
char ts[FORMAT_TIMESTAMP_MAX + 7];
|
|
const char *timestamp;
|
|
int r;
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|
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assert(f);
|
|
assert(j);
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|
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sd_journal_set_data_threshold(j, 0);
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|
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r = sd_journal_get_data(j, "_SOURCE_REALTIME_TIMESTAMP", &data, &length);
|
|
if (r == -ENOENT)
|
|
log_debug("Source realtime timestamp not found");
|
|
else if (r < 0)
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|
return log_full_errno(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR, r, "Failed to get source realtime timestamp: %m");
|
|
else {
|
|
_cleanup_free_ char *value = NULL;
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|
|
|
r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=",
|
|
STRLEN("_SOURCE_REALTIME_TIMESTAMP="), &value,
|
|
NULL);
|
|
if (r < 0)
|
|
return r;
|
|
assert(r > 0);
|
|
|
|
r = safe_atou64(value, &realtime);
|
|
if (r < 0)
|
|
log_debug_errno(r, "Failed to parse realtime timestamp: %m");
|
|
}
|
|
|
|
if (r < 0) {
|
|
r = sd_journal_get_realtime_usec(j, &realtime);
|
|
if (r < 0)
|
|
return log_full_errno(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR, r, "Failed to get realtime timestamp: %m");
|
|
}
|
|
|
|
r = sd_journal_get_cursor(j, &cursor);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get cursor: %m");
|
|
|
|
timestamp = flags & OUTPUT_UTC ? format_timestamp_us_utc(ts, sizeof ts, realtime)
|
|
: format_timestamp_us(ts, sizeof ts, realtime);
|
|
fprintf(f, "%s [%s]\n",
|
|
timestamp ?: "(no timestamp)",
|
|
cursor);
|
|
|
|
JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
|
|
const char *c;
|
|
int fieldlen;
|
|
const char *on = "", *off = "";
|
|
|
|
c = memchr(data, '=', length);
|
|
if (!c) {
|
|
log_error("Invalid field.");
|
|
return -EINVAL;
|
|
}
|
|
fieldlen = c - (const char*) data;
|
|
|
|
r = field_set_test(output_fields, data, fieldlen);
|
|
if (r < 0)
|
|
return r;
|
|
if (!r)
|
|
continue;
|
|
|
|
if (flags & OUTPUT_COLOR && startswith(data, "MESSAGE=")) {
|
|
on = ANSI_HIGHLIGHT;
|
|
off = ANSI_NORMAL;
|
|
}
|
|
|
|
if ((flags & OUTPUT_SHOW_ALL) ||
|
|
(((length < PRINT_CHAR_THRESHOLD) || flags & OUTPUT_FULL_WIDTH)
|
|
&& utf8_is_printable(data, length))) {
|
|
fprintf(f, " %s%.*s=", on, fieldlen, (const char*)data);
|
|
print_multiline(f, 4 + fieldlen + 1, 0, OUTPUT_FULL_WIDTH, 0, c + 1, length - fieldlen - 1);
|
|
fputs(off, f);
|
|
} else {
|
|
char bytes[FORMAT_BYTES_MAX];
|
|
|
|
fprintf(f, " %s%.*s=[%s blob data]%s\n",
|
|
on,
|
|
(int) (c - (const char*) data),
|
|
(const char*) data,
|
|
format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1),
|
|
off);
|
|
}
|
|
}
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (flags & OUTPUT_CATALOG)
|
|
print_catalog(f, j);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int output_export(
|
|
FILE *f,
|
|
sd_journal *j,
|
|
OutputMode mode,
|
|
unsigned n_columns,
|
|
OutputFlags flags,
|
|
Set *output_fields) {
|
|
|
|
sd_id128_t boot_id;
|
|
char sid[33];
|
|
int r;
|
|
usec_t realtime, monotonic;
|
|
_cleanup_free_ char *cursor = NULL;
|
|
const void *data;
|
|
size_t length;
|
|
|
|
assert(j);
|
|
|
|
sd_journal_set_data_threshold(j, 0);
|
|
|
|
r = sd_journal_get_realtime_usec(j, &realtime);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get realtime timestamp: %m");
|
|
|
|
r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get monotonic timestamp: %m");
|
|
|
|
r = sd_journal_get_cursor(j, &cursor);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get cursor: %m");
|
|
|
|
fprintf(f,
|
|
"__CURSOR=%s\n"
|
|
"__REALTIME_TIMESTAMP="USEC_FMT"\n"
|
|
"__MONOTONIC_TIMESTAMP="USEC_FMT"\n"
|
|
"_BOOT_ID=%s\n",
|
|
cursor,
|
|
realtime,
|
|
monotonic,
|
|
sd_id128_to_string(boot_id, sid));
|
|
|
|
JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
|
|
const char *c;
|
|
|
|
/* We already printed the boot id, from the data in
|
|
* the header, hence let's suppress it here */
|
|
if (length >= 9 &&
|
|
startswith(data, "_BOOT_ID="))
|
|
continue;
|
|
|
|
c = memchr(data, '=', length);
|
|
if (!c) {
|
|
log_error("Invalid field.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = field_set_test(output_fields, data, c - (const char *) data);
|
|
if (r < 0)
|
|
return r;
|
|
if (!r)
|
|
continue;
|
|
|
|
if (utf8_is_printable_newline(data, length, false))
|
|
fwrite(data, length, 1, f);
|
|
else {
|
|
uint64_t le64;
|
|
|
|
fwrite(data, c - (const char*) data, 1, f);
|
|
fputc('\n', f);
|
|
le64 = htole64(length - (c - (const char*) data) - 1);
|
|
fwrite(&le64, sizeof(le64), 1, f);
|
|
fwrite(c + 1, length - (c - (const char*) data) - 1, 1, f);
|
|
}
|
|
|
|
fputc('\n', f);
|
|
}
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
fputc('\n', f);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void json_escape(
|
|
FILE *f,
|
|
const char* p,
|
|
size_t l,
|
|
OutputFlags flags) {
|
|
|
|
assert(f);
|
|
assert(p);
|
|
|
|
if (!(flags & OUTPUT_SHOW_ALL) && l >= JSON_THRESHOLD)
|
|
fputs("null", f);
|
|
|
|
else if (!(flags & OUTPUT_SHOW_ALL) && !utf8_is_printable(p, l)) {
|
|
bool not_first = false;
|
|
|
|
fputs("[ ", f);
|
|
|
|
while (l > 0) {
|
|
if (not_first)
|
|
fprintf(f, ", %u", (uint8_t) *p);
|
|
else {
|
|
not_first = true;
|
|
fprintf(f, "%u", (uint8_t) *p);
|
|
}
|
|
|
|
p++;
|
|
l--;
|
|
}
|
|
|
|
fputs(" ]", f);
|
|
} else {
|
|
fputc('\"', f);
|
|
|
|
while (l > 0) {
|
|
if (IN_SET(*p, '"', '\\')) {
|
|
fputc('\\', f);
|
|
fputc(*p, f);
|
|
} else if (*p == '\n')
|
|
fputs("\\n", f);
|
|
else if ((uint8_t) *p < ' ')
|
|
fprintf(f, "\\u%04x", (uint8_t) *p);
|
|
else
|
|
fputc(*p, f);
|
|
|
|
p++;
|
|
l--;
|
|
}
|
|
|
|
fputc('\"', f);
|
|
}
|
|
}
|
|
|
|
static int output_json(
|
|
FILE *f,
|
|
sd_journal *j,
|
|
OutputMode mode,
|
|
unsigned n_columns,
|
|
OutputFlags flags,
|
|
Set *output_fields) {
|
|
|
|
uint64_t realtime, monotonic;
|
|
_cleanup_free_ char *cursor = NULL;
|
|
const void *data;
|
|
size_t length;
|
|
sd_id128_t boot_id;
|
|
char sid[33], *k;
|
|
int r;
|
|
Hashmap *h = NULL;
|
|
bool done, separator;
|
|
|
|
assert(j);
|
|
|
|
sd_journal_set_data_threshold(j, flags & OUTPUT_SHOW_ALL ? 0 : JSON_THRESHOLD);
|
|
|
|
r = sd_journal_get_realtime_usec(j, &realtime);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get realtime timestamp: %m");
|
|
|
|
r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get monotonic timestamp: %m");
|
|
|
|
r = sd_journal_get_cursor(j, &cursor);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get cursor: %m");
|
|
|
|
if (mode == OUTPUT_JSON_PRETTY)
|
|
fprintf(f,
|
|
"{\n"
|
|
"\t\"__CURSOR\" : \"%s\",\n"
|
|
"\t\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\",\n"
|
|
"\t\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\",\n"
|
|
"\t\"_BOOT_ID\" : \"%s\"",
|
|
cursor,
|
|
realtime,
|
|
monotonic,
|
|
sd_id128_to_string(boot_id, sid));
|
|
else {
|
|
if (mode == OUTPUT_JSON_SSE)
|
|
fputs("data: ", f);
|
|
|
|
fprintf(f,
|
|
"{ \"__CURSOR\" : \"%s\", "
|
|
"\"__REALTIME_TIMESTAMP\" : \""USEC_FMT"\", "
|
|
"\"__MONOTONIC_TIMESTAMP\" : \""USEC_FMT"\", "
|
|
"\"_BOOT_ID\" : \"%s\"",
|
|
cursor,
|
|
realtime,
|
|
monotonic,
|
|
sd_id128_to_string(boot_id, sid));
|
|
}
|
|
|
|
h = hashmap_new(&string_hash_ops);
|
|
if (!h)
|
|
return log_oom();
|
|
|
|
/* First round, iterate through the entry and count how often each field appears */
|
|
JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) {
|
|
const char *eq;
|
|
char *n;
|
|
unsigned u;
|
|
|
|
if (length >= 9 &&
|
|
memcmp(data, "_BOOT_ID=", 9) == 0)
|
|
continue;
|
|
|
|
eq = memchr(data, '=', length);
|
|
if (!eq)
|
|
continue;
|
|
|
|
n = strndup(data, eq - (const char*) data);
|
|
if (!n) {
|
|
r = log_oom();
|
|
goto finish;
|
|
}
|
|
|
|
u = PTR_TO_UINT(hashmap_get(h, n));
|
|
if (u == 0) {
|
|
r = hashmap_put(h, n, UINT_TO_PTR(1));
|
|
if (r < 0) {
|
|
free(n);
|
|
log_oom();
|
|
goto finish;
|
|
}
|
|
} else {
|
|
r = hashmap_update(h, n, UINT_TO_PTR(u + 1));
|
|
free(n);
|
|
if (r < 0) {
|
|
log_oom();
|
|
goto finish;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
separator = true;
|
|
do {
|
|
done = true;
|
|
|
|
SD_JOURNAL_FOREACH_DATA(j, data, length) {
|
|
const char *eq;
|
|
char *kk, *n;
|
|
size_t m;
|
|
unsigned u;
|
|
|
|
/* We already printed the boot id, from the data in
|
|
* the header, hence let's suppress it here */
|
|
if (length >= 9 &&
|
|
memcmp(data, "_BOOT_ID=", 9) == 0)
|
|
continue;
|
|
|
|
eq = memchr(data, '=', length);
|
|
if (!eq)
|
|
continue;
|
|
|
|
m = eq - (const char*) data;
|
|
|
|
n = strndup(data, m);
|
|
if (!n) {
|
|
r = log_oom();
|
|
goto finish;
|
|
}
|
|
|
|
if (output_fields && !set_get(output_fields, n)) {
|
|
free(n);
|
|
continue;
|
|
}
|
|
|
|
if (separator) {
|
|
if (mode == OUTPUT_JSON_PRETTY)
|
|
fputs(",\n\t", f);
|
|
else
|
|
fputs(", ", f);
|
|
}
|
|
|
|
u = PTR_TO_UINT(hashmap_get2(h, n, (void**) &kk));
|
|
if (u == 0) {
|
|
/* We already printed this, let's jump to the next */
|
|
free(n);
|
|
separator = false;
|
|
|
|
continue;
|
|
} else if (u == 1) {
|
|
/* Field only appears once, output it directly */
|
|
|
|
json_escape(f, data, m, flags);
|
|
fputs(" : ", f);
|
|
|
|
json_escape(f, eq + 1, length - m - 1, flags);
|
|
|
|
hashmap_remove(h, n);
|
|
free(kk);
|
|
free(n);
|
|
|
|
separator = true;
|
|
|
|
continue;
|
|
|
|
} else {
|
|
/* Field appears multiple times, output it as array */
|
|
json_escape(f, data, m, flags);
|
|
fputs(" : [ ", f);
|
|
json_escape(f, eq + 1, length - m - 1, flags);
|
|
|
|
/* Iterate through the end of the list */
|
|
|
|
while (sd_journal_enumerate_data(j, &data, &length) > 0) {
|
|
if (length < m + 1)
|
|
continue;
|
|
|
|
if (memcmp(data, n, m) != 0)
|
|
continue;
|
|
|
|
if (((const char*) data)[m] != '=')
|
|
continue;
|
|
|
|
fputs(", ", f);
|
|
json_escape(f, (const char*) data + m + 1, length - m - 1, flags);
|
|
}
|
|
|
|
fputs(" ]", f);
|
|
|
|
hashmap_remove(h, n);
|
|
free(kk);
|
|
free(n);
|
|
|
|
/* Iterate data fields form the beginning */
|
|
done = false;
|
|
separator = true;
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
} while (!done);
|
|
|
|
if (mode == OUTPUT_JSON_PRETTY)
|
|
fputs("\n}\n", f);
|
|
else if (mode == OUTPUT_JSON_SSE)
|
|
fputs("}\n\n", f);
|
|
else
|
|
fputs(" }\n", f);
|
|
|
|
r = 0;
|
|
|
|
finish:
|
|
while ((k = hashmap_steal_first_key(h)))
|
|
free(k);
|
|
|
|
hashmap_free(h);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int output_cat(
|
|
FILE *f,
|
|
sd_journal *j,
|
|
OutputMode mode,
|
|
unsigned n_columns,
|
|
OutputFlags flags,
|
|
Set *output_fields) {
|
|
|
|
const void *data;
|
|
size_t l;
|
|
int r;
|
|
|
|
assert(j);
|
|
assert(f);
|
|
|
|
sd_journal_set_data_threshold(j, 0);
|
|
|
|
r = sd_journal_get_data(j, "MESSAGE", &data, &l);
|
|
if (r < 0) {
|
|
/* An entry without MESSAGE=? */
|
|
if (r == -ENOENT)
|
|
return 0;
|
|
|
|
return log_error_errno(r, "Failed to get data: %m");
|
|
}
|
|
|
|
assert(l >= 8);
|
|
|
|
fwrite((const char*) data + 8, 1, l - 8, f);
|
|
fputc('\n', f);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int (*output_funcs[_OUTPUT_MODE_MAX])(
|
|
FILE *f,
|
|
sd_journal*j,
|
|
OutputMode mode,
|
|
unsigned n_columns,
|
|
OutputFlags flags,
|
|
Set *output_fields) = {
|
|
|
|
[OUTPUT_SHORT] = output_short,
|
|
[OUTPUT_SHORT_ISO] = output_short,
|
|
[OUTPUT_SHORT_ISO_PRECISE] = output_short,
|
|
[OUTPUT_SHORT_PRECISE] = output_short,
|
|
[OUTPUT_SHORT_MONOTONIC] = output_short,
|
|
[OUTPUT_SHORT_UNIX] = output_short,
|
|
[OUTPUT_SHORT_FULL] = output_short,
|
|
[OUTPUT_VERBOSE] = output_verbose,
|
|
[OUTPUT_EXPORT] = output_export,
|
|
[OUTPUT_JSON] = output_json,
|
|
[OUTPUT_JSON_PRETTY] = output_json,
|
|
[OUTPUT_JSON_SSE] = output_json,
|
|
[OUTPUT_CAT] = output_cat
|
|
};
|
|
|
|
int output_journal(
|
|
FILE *f,
|
|
sd_journal *j,
|
|
OutputMode mode,
|
|
unsigned n_columns,
|
|
OutputFlags flags,
|
|
char **output_fields,
|
|
bool *ellipsized) {
|
|
|
|
int ret;
|
|
_cleanup_set_free_free_ Set *fields = NULL;
|
|
assert(mode >= 0);
|
|
assert(mode < _OUTPUT_MODE_MAX);
|
|
|
|
if (n_columns <= 0)
|
|
n_columns = columns();
|
|
|
|
if (output_fields) {
|
|
fields = set_new(&string_hash_ops);
|
|
if (!fields)
|
|
return log_oom();
|
|
|
|
ret = set_put_strdupv(fields, output_fields);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
ret = output_funcs[mode](f, j, mode, n_columns, flags, fields);
|
|
|
|
if (ellipsized && ret > 0)
|
|
*ellipsized = true;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int maybe_print_begin_newline(FILE *f, OutputFlags *flags) {
|
|
assert(f);
|
|
assert(flags);
|
|
|
|
if (!(*flags & OUTPUT_BEGIN_NEWLINE))
|
|
return 0;
|
|
|
|
/* Print a beginning new line if that's request, but only once
|
|
* on the first line we print. */
|
|
|
|
fputc('\n', f);
|
|
*flags &= ~OUTPUT_BEGIN_NEWLINE;
|
|
return 0;
|
|
}
|
|
|
|
static int show_journal(FILE *f,
|
|
sd_journal *j,
|
|
OutputMode mode,
|
|
unsigned n_columns,
|
|
usec_t not_before,
|
|
unsigned how_many,
|
|
OutputFlags flags,
|
|
bool *ellipsized) {
|
|
|
|
int r;
|
|
unsigned line = 0;
|
|
bool need_seek = false;
|
|
int warn_cutoff = flags & OUTPUT_WARN_CUTOFF;
|
|
|
|
assert(j);
|
|
assert(mode >= 0);
|
|
assert(mode < _OUTPUT_MODE_MAX);
|
|
|
|
/* Seek to end */
|
|
r = sd_journal_seek_tail(j);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to seek to tail: %m");
|
|
|
|
r = sd_journal_previous_skip(j, how_many);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to skip previous: %m");
|
|
|
|
for (;;) {
|
|
for (;;) {
|
|
usec_t usec;
|
|
|
|
if (need_seek) {
|
|
r = sd_journal_next(j);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to iterate through journal: %m");
|
|
}
|
|
|
|
if (r == 0)
|
|
break;
|
|
|
|
need_seek = true;
|
|
|
|
if (not_before > 0) {
|
|
r = sd_journal_get_monotonic_usec(j, &usec, NULL);
|
|
|
|
/* -ESTALE is returned if the
|
|
timestamp is not from this boot */
|
|
if (r == -ESTALE)
|
|
continue;
|
|
else if (r < 0)
|
|
return log_error_errno(r, "Failed to get journal time: %m");
|
|
|
|
if (usec < not_before)
|
|
continue;
|
|
}
|
|
|
|
line++;
|
|
maybe_print_begin_newline(f, &flags);
|
|
|
|
r = output_journal(f, j, mode, n_columns, flags, NULL, ellipsized);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (warn_cutoff && line < how_many && not_before > 0) {
|
|
sd_id128_t boot_id;
|
|
usec_t cutoff = 0;
|
|
|
|
/* Check whether the cutoff line is too early */
|
|
|
|
r = sd_id128_get_boot(&boot_id);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get boot id: %m");
|
|
|
|
r = sd_journal_get_cutoff_monotonic_usec(j, boot_id, &cutoff, NULL);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get journal cutoff time: %m");
|
|
|
|
if (r > 0 && not_before < cutoff) {
|
|
maybe_print_begin_newline(f, &flags);
|
|
fprintf(f, "Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.\n");
|
|
}
|
|
|
|
warn_cutoff = false;
|
|
}
|
|
|
|
if (!(flags & OUTPUT_FOLLOW))
|
|
break;
|
|
|
|
r = sd_journal_wait(j, USEC_INFINITY);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to wait for journal: %m");
|
|
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int add_matches_for_unit(sd_journal *j, const char *unit) {
|
|
const char *m1, *m2, *m3, *m4;
|
|
int r;
|
|
|
|
assert(j);
|
|
assert(unit);
|
|
|
|
m1 = strjoina("_SYSTEMD_UNIT=", unit);
|
|
m2 = strjoina("COREDUMP_UNIT=", unit);
|
|
m3 = strjoina("UNIT=", unit);
|
|
m4 = strjoina("OBJECT_SYSTEMD_UNIT=", unit);
|
|
|
|
(void)(
|
|
/* Look for messages from the service itself */
|
|
(r = sd_journal_add_match(j, m1, 0)) ||
|
|
|
|
/* Look for coredumps of the service */
|
|
(r = sd_journal_add_disjunction(j)) ||
|
|
(r = sd_journal_add_match(j, "MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1", 0)) ||
|
|
(r = sd_journal_add_match(j, "_UID=0", 0)) ||
|
|
(r = sd_journal_add_match(j, m2, 0)) ||
|
|
|
|
/* Look for messages from PID 1 about this service */
|
|
(r = sd_journal_add_disjunction(j)) ||
|
|
(r = sd_journal_add_match(j, "_PID=1", 0)) ||
|
|
(r = sd_journal_add_match(j, m3, 0)) ||
|
|
|
|
/* Look for messages from authorized daemons about this service */
|
|
(r = sd_journal_add_disjunction(j)) ||
|
|
(r = sd_journal_add_match(j, "_UID=0", 0)) ||
|
|
(r = sd_journal_add_match(j, m4, 0))
|
|
);
|
|
|
|
if (r == 0 && endswith(unit, ".slice")) {
|
|
const char *m5;
|
|
|
|
m5 = strjoina("_SYSTEMD_SLICE=", unit);
|
|
|
|
/* Show all messages belonging to a slice */
|
|
(void)(
|
|
(r = sd_journal_add_disjunction(j)) ||
|
|
(r = sd_journal_add_match(j, m5, 0))
|
|
);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int add_matches_for_user_unit(sd_journal *j, const char *unit, uid_t uid) {
|
|
int r;
|
|
char *m1, *m2, *m3, *m4;
|
|
char muid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)];
|
|
|
|
assert(j);
|
|
assert(unit);
|
|
|
|
m1 = strjoina("_SYSTEMD_USER_UNIT=", unit);
|
|
m2 = strjoina("USER_UNIT=", unit);
|
|
m3 = strjoina("COREDUMP_USER_UNIT=", unit);
|
|
m4 = strjoina("OBJECT_SYSTEMD_USER_UNIT=", unit);
|
|
sprintf(muid, "_UID="UID_FMT, uid);
|
|
|
|
(void) (
|
|
/* Look for messages from the user service itself */
|
|
(r = sd_journal_add_match(j, m1, 0)) ||
|
|
(r = sd_journal_add_match(j, muid, 0)) ||
|
|
|
|
/* Look for messages from systemd about this service */
|
|
(r = sd_journal_add_disjunction(j)) ||
|
|
(r = sd_journal_add_match(j, m2, 0)) ||
|
|
(r = sd_journal_add_match(j, muid, 0)) ||
|
|
|
|
/* Look for coredumps of the service */
|
|
(r = sd_journal_add_disjunction(j)) ||
|
|
(r = sd_journal_add_match(j, m3, 0)) ||
|
|
(r = sd_journal_add_match(j, muid, 0)) ||
|
|
(r = sd_journal_add_match(j, "_UID=0", 0)) ||
|
|
|
|
/* Look for messages from authorized daemons about this service */
|
|
(r = sd_journal_add_disjunction(j)) ||
|
|
(r = sd_journal_add_match(j, m4, 0)) ||
|
|
(r = sd_journal_add_match(j, muid, 0)) ||
|
|
(r = sd_journal_add_match(j, "_UID=0", 0))
|
|
);
|
|
|
|
if (r == 0 && endswith(unit, ".slice")) {
|
|
const char *m5;
|
|
|
|
m5 = strjoina("_SYSTEMD_SLICE=", unit);
|
|
|
|
/* Show all messages belonging to a slice */
|
|
(void)(
|
|
(r = sd_journal_add_disjunction(j)) ||
|
|
(r = sd_journal_add_match(j, m5, 0)) ||
|
|
(r = sd_journal_add_match(j, muid, 0))
|
|
);
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static int get_boot_id_for_machine(const char *machine, sd_id128_t *boot_id) {
|
|
_cleanup_close_pair_ int pair[2] = { -1, -1 };
|
|
_cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1;
|
|
pid_t pid, child;
|
|
char buf[37];
|
|
ssize_t k;
|
|
int r;
|
|
|
|
assert(machine);
|
|
assert(boot_id);
|
|
|
|
if (!machine_name_is_valid(machine))
|
|
return -EINVAL;
|
|
|
|
r = container_get_leader(machine, &pid);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, NULL, &rootfd);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)
|
|
return -errno;
|
|
|
|
r = safe_fork("(sd-bootid)", FORK_RESET_SIGNALS|FORK_DEATHSIG, &child);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0) {
|
|
int fd;
|
|
|
|
pair[0] = safe_close(pair[0]);
|
|
|
|
r = namespace_enter(pidnsfd, mntnsfd, -1, -1, rootfd);
|
|
if (r < 0)
|
|
_exit(EXIT_FAILURE);
|
|
|
|
fd = open("/proc/sys/kernel/random/boot_id", O_RDONLY|O_CLOEXEC|O_NOCTTY);
|
|
if (fd < 0)
|
|
_exit(EXIT_FAILURE);
|
|
|
|
r = loop_read_exact(fd, buf, 36, false);
|
|
safe_close(fd);
|
|
if (r < 0)
|
|
_exit(EXIT_FAILURE);
|
|
|
|
k = send(pair[1], buf, 36, MSG_NOSIGNAL);
|
|
if (k != 36)
|
|
_exit(EXIT_FAILURE);
|
|
|
|
_exit(EXIT_SUCCESS);
|
|
}
|
|
|
|
pair[1] = safe_close(pair[1]);
|
|
|
|
r = wait_for_terminate_and_check("(sd-bootid)", child, 0);
|
|
if (r < 0)
|
|
return r;
|
|
if (r != EXIT_SUCCESS)
|
|
return -EIO;
|
|
|
|
k = recv(pair[0], buf, 36, 0);
|
|
if (k != 36)
|
|
return -EIO;
|
|
|
|
buf[36] = 0;
|
|
r = sd_id128_from_string(buf, boot_id);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int add_match_this_boot(sd_journal *j, const char *machine) {
|
|
char match[9+32+1] = "_BOOT_ID=";
|
|
sd_id128_t boot_id;
|
|
int r;
|
|
|
|
assert(j);
|
|
|
|
if (machine) {
|
|
r = get_boot_id_for_machine(machine, &boot_id);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get boot id of container %s: %m", machine);
|
|
} else {
|
|
r = sd_id128_get_boot(&boot_id);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to get boot id: %m");
|
|
}
|
|
|
|
sd_id128_to_string(boot_id, match + 9);
|
|
r = sd_journal_add_match(j, match, strlen(match));
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add match: %m");
|
|
|
|
r = sd_journal_add_conjunction(j);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add conjunction: %m");
|
|
|
|
return 0;
|
|
}
|
|
|
|
int show_journal_by_unit(
|
|
FILE *f,
|
|
const char *unit,
|
|
OutputMode mode,
|
|
unsigned n_columns,
|
|
usec_t not_before,
|
|
unsigned how_many,
|
|
uid_t uid,
|
|
OutputFlags flags,
|
|
int journal_open_flags,
|
|
bool system_unit,
|
|
bool *ellipsized) {
|
|
|
|
_cleanup_(sd_journal_closep) sd_journal *j = NULL;
|
|
int r;
|
|
|
|
assert(mode >= 0);
|
|
assert(mode < _OUTPUT_MODE_MAX);
|
|
assert(unit);
|
|
|
|
if (how_many <= 0)
|
|
return 0;
|
|
|
|
r = sd_journal_open(&j, journal_open_flags);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to open journal: %m");
|
|
|
|
r = add_match_this_boot(j, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (system_unit)
|
|
r = add_matches_for_unit(j, unit);
|
|
else
|
|
r = add_matches_for_user_unit(j, unit, uid);
|
|
if (r < 0)
|
|
return log_error_errno(r, "Failed to add unit matches: %m");
|
|
|
|
if (DEBUG_LOGGING) {
|
|
_cleanup_free_ char *filter;
|
|
|
|
filter = journal_make_match_string(j);
|
|
if (!filter)
|
|
return log_oom();
|
|
|
|
log_debug("Journal filter: %s", filter);
|
|
}
|
|
|
|
return show_journal(f, j, mode, n_columns, not_before, how_many, flags, ellipsized);
|
|
}
|