| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <sys/socket.h> |
| #include <syslog.h> |
| #include <unistd.h> |
| |
| #include "sd-id128.h" |
| #include "sd-journal.h" |
| |
| #include "alloc-util.h" |
| #include "fd-util.h" |
| #include "format-util.h" |
| #include "hashmap.h" |
| #include "hostname-util.h" |
| #include "id128-util.h" |
| #include "io-util.h" |
| #include "journal-internal.h" |
| #include "journal-util.h" |
| #include "json.h" |
| #include "locale-util.h" |
| #include "log.h" |
| #include "logs-show.h" |
| #include "macro.h" |
| #include "namespace-util.h" |
| #include "output-mode.h" |
| #include "parse-util.h" |
| #include "pretty-print.h" |
| #include "process-util.h" |
| #include "sparse-endian.h" |
| #include "stdio-util.h" |
| #include "string-table.h" |
| #include "string-util.h" |
| #include "strv.h" |
| #include "terminal-util.h" |
| #include "time-util.h" |
| #include "utf8.h" |
| #include "util.h" |
| #include "web-util.h" |
| |
| /* up to three lines (each up to 100 characters) or 300 characters, whichever is less */ |
| #define PRINT_LINE_THRESHOLD 3 |
| #define PRINT_CHAR_THRESHOLD 300 |
| |
| #define JSON_THRESHOLD 4096U |
| |
| static int print_catalog(FILE *f, sd_journal *j) { |
| _cleanup_free_ char *t = NULL, *z = NULL; |
| const char *newline, *prefix; |
| int r; |
| |
| assert(j); |
| |
| r = sd_journal_get_catalog(j, &t); |
| if (r == -ENOENT) |
| return 0; |
| if (r < 0) |
| return log_error_errno(r, "Failed to find catalog entry: %m"); |
| |
| if (is_locale_utf8()) |
| prefix = strjoina(special_glyph(SPECIAL_GLYPH_LIGHT_SHADE), special_glyph(SPECIAL_GLYPH_LIGHT_SHADE)); |
| else |
| prefix = "--"; |
| |
| if (colors_enabled()) |
| newline = strjoina(ANSI_NORMAL "\n" ANSI_GREY, prefix, ANSI_NORMAL " " ANSI_GREEN); |
| else |
| newline = strjoina("\n", prefix, " "); |
| |
| z = strreplace(strstrip(t), "\n", newline); |
| if (!z) |
| return log_oom(); |
| |
| if (colors_enabled()) |
| fprintf(f, ANSI_GREY "%s" ANSI_NORMAL " " ANSI_GREEN, prefix); |
| else |
| fprintf(f, "%s ", prefix); |
| |
| fputs(z, f); |
| |
| if (colors_enabled()) |
| fputs(ANSI_NORMAL "\n", f); |
| else |
| fputc('\n', f); |
| |
| return 1; |
| } |
| |
| static int url_from_catalog(sd_journal *j, char **ret) { |
| _cleanup_free_ char *t = NULL, *url = NULL; |
| const char *weblink; |
| int r; |
| |
| assert(j); |
| assert(ret); |
| |
| r = sd_journal_get_catalog(j, &t); |
| if (r == -ENOENT) |
| goto notfound; |
| if (r < 0) |
| return log_error_errno(r, "Failed to find catalog entry: %m"); |
| |
| weblink = startswith(t, "Documentation:"); |
| if (!weblink) { |
| weblink = strstr(t + 1, "\nDocumentation:"); |
| if (!weblink) |
| goto notfound; |
| |
| weblink += 15; |
| } |
| |
| /* Skip whitespace to value */ |
| weblink += strspn(weblink, " \t"); |
| |
| /* Cut out till next whitespace/newline */ |
| url = strndup(weblink, strcspn(weblink, WHITESPACE)); |
| if (!url) |
| return log_oom(); |
| |
| if (!documentation_url_is_valid(url)) |
| goto notfound; |
| |
| *ret = TAKE_PTR(url); |
| return 1; |
| |
| notfound: |
| *ret = NULL; |
| return 0; |
| } |
| |
| static int parse_field(const void *data, size_t length, const char *field, size_t field_len, char **target, size_t *target_len) { |
| size_t nl; |
| char *buf; |
| |
| assert(data); |
| assert(field); |
| assert(target); |
| |
| if (length < field_len) |
| return 0; |
| |
| if (memcmp(data, field, field_len)) |
| return 0; |
| |
| nl = length - field_len; |
| |
| buf = newdup_suffix0(char, (const char*) data + field_len, nl); |
| if (!buf) |
| return log_oom(); |
| |
| free(*target); |
| *target = buf; |
| |
| if (target_len) |
| *target_len = nl; |
| |
| return 1; |
| } |
| |
| typedef struct ParseFieldVec { |
| const char *field; |
| size_t field_len; |
| char **target; |
| size_t *target_len; |
| } ParseFieldVec; |
| |
| #define PARSE_FIELD_VEC_ENTRY(_field, _target, _target_len) { \ |
| .field = _field, \ |
| .field_len = strlen(_field), \ |
| .target = _target, \ |
| .target_len = _target_len \ |
| } |
| |
| static int parse_fieldv(const void *data, size_t length, const ParseFieldVec *fields, unsigned n_fields) { |
| unsigned i; |
| |
| for (i = 0; i < n_fields; i++) { |
| const ParseFieldVec *f = &fields[i]; |
| int r; |
| |
| r = parse_field(data, length, f->field, f->field_len, f->target, f->target_len); |
| if (r < 0) |
| return r; |
| else if (r > 0) |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int field_set_test(const Set *fields, const char *name, size_t n) { |
| char *s; |
| |
| if (!fields) |
| return 1; |
| |
| s = strndupa(name, n); |
| return set_contains(fields, s); |
| } |
| |
| static bool shall_print(const char *p, size_t l, OutputFlags flags) { |
| assert(p); |
| |
| if (flags & OUTPUT_SHOW_ALL) |
| return true; |
| |
| if (l >= PRINT_CHAR_THRESHOLD) |
| return false; |
| |
| if (!utf8_is_printable(p, l)) |
| return false; |
| |
| return true; |
| } |
| |
| static bool print_multiline( |
| FILE *f, |
| unsigned prefix, |
| unsigned n_columns, |
| OutputFlags flags, |
| int priority, |
| bool audit, |
| const char* message, |
| size_t message_len, |
| size_t highlight[2]) { |
| |
| const char *color_on = "", *color_off = "", *highlight_on = ""; |
| const char *pos, *end; |
| bool ellipsized = false; |
| int line = 0; |
| |
| if (flags & OUTPUT_COLOR) { |
| get_log_colors(priority, &color_on, &color_off, &highlight_on); |
| |
| if (audit && strempty(color_on)) { |
| color_on = ANSI_BLUE; |
| color_off = ANSI_NORMAL; |
| } |
| } |
| |
| /* A special case: make sure that we print a newline when |
| the message is empty. */ |
| if (message_len == 0) |
| fputs("\n", f); |
| |
| for (pos = message; |
| pos < message + message_len; |
| pos = end + 1, line++) { |
| bool continuation = line > 0; |
| bool tail_line; |
| int len; |
| for (end = pos; end < message + message_len && *end != '\n'; end++) |
| ; |
| len = end - pos; |
| assert(len >= 0); |
| |
| /* We need to figure out when we are showing not-last line, *and* |
| * will skip subsequent lines. In that case, we will put the dots |
| * at the end of the line, instead of putting dots in the middle |
| * or not at all. |
| */ |
| tail_line = |
| line + 1 == PRINT_LINE_THRESHOLD || |
| end + 1 >= message + PRINT_CHAR_THRESHOLD; |
| |
| if (flags & (OUTPUT_FULL_WIDTH | OUTPUT_SHOW_ALL) || |
| (prefix + len + 1 < n_columns && !tail_line)) { |
| if (highlight && |
| (size_t) (pos - message) <= highlight[0] && |
| highlight[0] < (size_t) len) { |
| |
| fprintf(f, "%*s%s%.*s", |
| continuation * prefix, "", |
| color_on, (int) highlight[0], pos); |
| fprintf(f, "%s%.*s", |
| highlight_on, |
| (int) (MIN((size_t) len, highlight[1]) - highlight[0]), |
| pos + highlight[0]); |
| if ((size_t) len > highlight[1]) |
| fprintf(f, "%s%.*s", |
| color_on, |
| (int) (len - highlight[1]), |
| pos + highlight[1]); |
| fprintf(f, "%s\n", color_off); |
| |
| } else |
| fprintf(f, "%*s%s%.*s%s\n", |
| continuation * prefix, "", |
| color_on, len, pos, color_off); |
| continue; |
| } |
| |
| /* Beyond this point, ellipsization will happen. */ |
| ellipsized = true; |
| |
| if (prefix < n_columns && n_columns - prefix >= 3) { |
| if (n_columns - prefix > (unsigned) len + 3) |
| fprintf(f, "%*s%s%.*s...%s\n", |
| continuation * prefix, "", |
| color_on, len, pos, color_off); |
| else { |
| _cleanup_free_ char *e; |
| |
| e = ellipsize_mem(pos, len, n_columns - prefix, |
| tail_line ? 100 : 90); |
| if (!e) |
| fprintf(f, "%*s%s%.*s%s\n", |
| continuation * prefix, "", |
| color_on, len, pos, color_off); |
| else |
| fprintf(f, "%*s%s%s%s\n", |
| continuation * prefix, "", |
| color_on, e, color_off); |
| } |
| } else |
| fputs("...\n", f); |
| |
| if (tail_line) |
| break; |
| } |
| |
| return ellipsized; |
| } |
| |
| static int output_timestamp_monotonic(FILE *f, sd_journal *j, const char *monotonic) { |
| sd_id128_t boot_id; |
| uint64_t t; |
| int r; |
| |
| assert(f); |
| assert(j); |
| |
| r = -ENXIO; |
| if (monotonic) |
| r = safe_atou64(monotonic, &t); |
| if (r < 0) |
| r = sd_journal_get_monotonic_usec(j, &t, &boot_id); |
| if (r < 0) |
| return log_error_errno(r, "Failed to get monotonic timestamp: %m"); |
| |
| fprintf(f, "[%5"PRI_USEC".%06"PRI_USEC"]", t / USEC_PER_SEC, t % USEC_PER_SEC); |
| return 1 + 5 + 1 + 6 + 1; |
| } |
| |
| static int output_timestamp_realtime(FILE *f, sd_journal *j, OutputMode mode, OutputFlags flags, const char *realtime) { |
| char buf[MAX(FORMAT_TIMESTAMP_MAX, 64U)]; |
| uint64_t x; |
| int r; |
| |
| assert(f); |
| assert(j); |
| |
| if (realtime) |
| r = safe_atou64(realtime, &x); |
| if (!realtime || r < 0 || !VALID_REALTIME(x)) |
| r = sd_journal_get_realtime_usec(j, &x); |
| if (r < 0) |
| return log_error_errno(r, "Failed to get realtime timestamp: %m"); |
| |
| if (IN_SET(mode, OUTPUT_SHORT_FULL, OUTPUT_WITH_UNIT)) { |
| const char *k; |
| |
| if (flags & OUTPUT_UTC) |
| k = format_timestamp_style(buf, sizeof(buf), x, TIMESTAMP_UTC); |
| else |
| k = format_timestamp(buf, sizeof(buf), x); |
| if (!k) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Failed to format timestamp: %" PRIu64, x); |
| |
| } else { |
| struct tm tm; |
| time_t t; |
| |
| t = (time_t) (x / USEC_PER_SEC); |
| |
| switch (mode) { |
| |
| case OUTPUT_SHORT_UNIX: |
| xsprintf(buf, "%10"PRI_TIME".%06"PRIu64, t, x % USEC_PER_SEC); |
| break; |
| |
| case OUTPUT_SHORT_ISO: |
| if (strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S%z", |
| localtime_or_gmtime_r(&t, &tm, flags & OUTPUT_UTC)) <= 0) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Failed to format ISO time"); |
| break; |
| |
| case OUTPUT_SHORT_ISO_PRECISE: { |
| char usec[7]; |
| |
| /* No usec in strftime, so we leave space and copy over */ |
| if (strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S.xxxxxx%z", |
| localtime_or_gmtime_r(&t, &tm, flags & OUTPUT_UTC)) <= 0) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Failed to format ISO-precise time"); |
| xsprintf(usec, "%06"PRI_USEC, x % USEC_PER_SEC); |
| memcpy(buf + 20, usec, 6); |
| break; |
| } |
| case OUTPUT_SHORT: |
| case OUTPUT_SHORT_PRECISE: |
| |
| if (strftime(buf, sizeof(buf), "%b %d %H:%M:%S", |
| localtime_or_gmtime_r(&t, &tm, flags & OUTPUT_UTC)) <= 0) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Failed to format syslog time"); |
| |
| if (mode == OUTPUT_SHORT_PRECISE) { |
| size_t k; |
| |
| assert(sizeof(buf) > strlen(buf)); |
| k = sizeof(buf) - strlen(buf); |
| |
| r = snprintf(buf + strlen(buf), k, ".%06"PRIu64, x % USEC_PER_SEC); |
| if (r <= 0 || (size_t) r >= k) /* too long? */ |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Failed to format precise time"); |
| } |
| break; |
| |
| default: |
| assert_not_reached("Unknown time format"); |
| } |
| } |
| |
| fputs(buf, f); |
| return (int) strlen(buf); |
| } |
| |
| static int output_short( |
| FILE *f, |
| sd_journal *j, |
| OutputMode mode, |
| unsigned n_columns, |
| OutputFlags flags, |
| const Set *output_fields, |
| const size_t highlight[2]) { |
| |
| int r; |
| const void *data; |
| size_t length, n = 0; |
| _cleanup_free_ char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, |
| *message = NULL, *realtime = NULL, *monotonic = NULL, *priority = NULL, *transport = NULL, |
| *config_file = NULL, *unit = NULL, *user_unit = NULL, *documentation_url = NULL; |
| 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, transport_len = 0, config_file_len = 0, |
| unit_len = 0, user_unit_len = 0, documentation_url_len = 0; |
| int p = LOG_INFO; |
| bool ellipsized = false, audit; |
| const ParseFieldVec fields[] = { |
| PARSE_FIELD_VEC_ENTRY("_PID=", &pid, &pid_len), |
| PARSE_FIELD_VEC_ENTRY("_COMM=", &comm, &comm_len), |
| PARSE_FIELD_VEC_ENTRY("MESSAGE=", &message, &message_len), |
| PARSE_FIELD_VEC_ENTRY("PRIORITY=", &priority, &priority_len), |
| PARSE_FIELD_VEC_ENTRY("_TRANSPORT=", &transport, &transport_len), |
| PARSE_FIELD_VEC_ENTRY("_HOSTNAME=", &hostname, &hostname_len), |
| PARSE_FIELD_VEC_ENTRY("SYSLOG_PID=", &fake_pid, &fake_pid_len), |
| PARSE_FIELD_VEC_ENTRY("SYSLOG_IDENTIFIER=", &identifier, &identifier_len), |
| PARSE_FIELD_VEC_ENTRY("_SOURCE_REALTIME_TIMESTAMP=", &realtime, &realtime_len), |
| PARSE_FIELD_VEC_ENTRY("_SOURCE_MONOTONIC_TIMESTAMP=", &monotonic, &monotonic_len), |
| PARSE_FIELD_VEC_ENTRY("CONFIG_FILE=", &config_file, &config_file_len), |
| PARSE_FIELD_VEC_ENTRY("_SYSTEMD_UNIT=", &unit, &unit_len), |
| PARSE_FIELD_VEC_ENTRY("_SYSTEMD_USER_UNIT=", &user_unit, &user_unit_len), |
| PARSE_FIELD_VEC_ENTRY("DOCUMENTATION=", &documentation_url, &documentation_url_len), |
| }; |
| size_t highlight_shifted[] = {highlight ? highlight[0] : 0, highlight ? highlight[1] : 0}; |
| |
| assert(f); |
| assert(j); |
| |
| /* Set the threshold to one bigger than the actual print |
| * threshold, so that if the line is actually longer than what |
| * we're willing to print, ellipsization will occur. This way |
| * we won't output a misleading line without any indication of |
| * truncation. |
| */ |
| sd_journal_set_data_threshold(j, flags & (OUTPUT_SHOW_ALL|OUTPUT_FULL_WIDTH) ? 0 : PRINT_CHAR_THRESHOLD + 1); |
| |
| JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) { |
| r = parse_fieldv(data, length, fields, ELEMENTSOF(fields)); |
| if (r < 0) |
| return r; |
| } |
| if (r == -EBADMSG) { |
| log_debug_errno(r, "Skipping message we can't read: %m"); |
| return 0; |
| } |
| if (r < 0) |
| return log_error_errno(r, "Failed to get journal fields: %m"); |
| |
| if (!message) { |
| log_debug("Skipping message without MESSAGE= field."); |
| return 0; |
| } |
| |
| if (!(flags & OUTPUT_SHOW_ALL)) |
| strip_tab_ansi(&message, &message_len, highlight_shifted); |
| |
| if (priority_len == 1 && *priority >= '0' && *priority <= '7') |
| p = *priority - '0'; |
| |
| audit = streq_ptr(transport, "audit"); |
| |
| if (mode == OUTPUT_SHORT_MONOTONIC) |
| r = output_timestamp_monotonic(f, j, monotonic); |
| else |
| r = output_timestamp_realtime(f, j, mode, flags, realtime); |
| if (r < 0) |
| return r; |
| n += r; |
| |
| if (flags & OUTPUT_NO_HOSTNAME) { |
| /* Suppress display of the hostname if this is requested. */ |
| hostname = mfree(hostname); |
| hostname_len = 0; |
| } |
| |
| if (hostname && shall_print(hostname, hostname_len, flags)) { |
| fprintf(f, " %.*s", (int) hostname_len, hostname); |
| n += hostname_len + 1; |
| } |
| |
| if (mode == OUTPUT_WITH_UNIT && ((unit && shall_print(unit, unit_len, flags)) || |
| (user_unit && shall_print(user_unit, user_unit_len, flags)))) { |
| if (unit) { |
| fprintf(f, " %.*s", (int) unit_len, unit); |
| n += unit_len + 1; |
| } |
| if (user_unit) { |
| if (unit) |
| fprintf(f, "/%.*s", (int) user_unit_len, user_unit); |
| else |
| fprintf(f, " %.*s", (int) user_unit_len, user_unit); |
| n += unit_len + 1; |
| } |
| } else if (identifier && shall_print(identifier, identifier_len, flags)) { |
| fprintf(f, " %.*s", (int) identifier_len, identifier); |
| n += identifier_len + 1; |
| } else if (comm && shall_print(comm, comm_len, flags)) { |
| fprintf(f, " %.*s", (int) comm_len, comm); |
| n += comm_len + 1; |
| } else |
| fputs(" unknown", f); |
| |
| if (pid && shall_print(pid, pid_len, flags)) { |
| fprintf(f, "[%.*s]", (int) pid_len, pid); |
| n += pid_len + 2; |
| } else if (fake_pid && shall_print(fake_pid, fake_pid_len, flags)) { |
| fprintf(f, "[%.*s]", (int) fake_pid_len, fake_pid); |
| n += fake_pid_len + 2; |
| } |
| |
| fputs(": ", f); |
| |
| if (urlify_enabled()) { |
| _cleanup_free_ char *c = NULL; |
| |
| /* Insert a hyperlink to a documentation URL before the message. Note that we don't make the |
| * whole message a hyperlink, since otherwise the whole screen might end up being just |
| * hyperlinks. Moreover, we want to be able to highlight parts of the message (such as the |
| * config file, see below) hence let's keep the documentation URL link separate. */ |
| |
| if (documentation_url && shall_print(documentation_url, documentation_url_len, flags)) { |
| c = strndup(documentation_url, documentation_url_len); |
| if (!c) |
| return log_oom(); |
| |
| if (!documentation_url_is_valid(c)) /* Eat up invalid links */ |
| c = mfree(c); |
| } |
| |
| if (!c) |
| (void) url_from_catalog(j, &c); /* Acquire from catalog if not embedded in log message itself */ |
| |
| if (c) { |
| _cleanup_free_ char *urlified = NULL; |
| |
| if (terminal_urlify(c, special_glyph(SPECIAL_GLYPH_EXTERNAL_LINK), &urlified) >= 0) { |
| fputs(urlified, f); |
| fputc(' ', f); |
| } |
| } |
| } |
| |
| 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 { |
| |
| /* URLify config_file string in message, if the message starts with it. |
| * Skip URLification if the highlighted pattern overlaps. */ |
| if (config_file && |
| message_len >= config_file_len && |
| memcmp(message, config_file, config_file_len) == 0 && |
| (message_len == config_file_len || IN_SET(message[config_file_len], ':', ' ')) && |
| (!highlight || highlight_shifted[0] == 0 || highlight_shifted[0] > config_file_len)) { |
| |
| _cleanup_free_ char *t = NULL, *urlified = NULL; |
| |
| t = strndup(config_file, config_file_len); |
| if (t && terminal_urlify_path(t, NULL, &urlified) >= 0) { |
| size_t urlified_len = strlen(urlified); |
| size_t shift = urlified_len - config_file_len; |
| char *joined; |
| |
| joined = realloc(urlified, message_len + shift); |
| if (joined) { |
| memcpy(joined + urlified_len, message + config_file_len, message_len - config_file_len); |
| free_and_replace(message, joined); |
| TAKE_PTR(urlified); |
| message_len += shift; |
| if (highlight) { |
| highlight_shifted[0] += shift; |
| highlight_shifted[1] += shift; |
| } |
| } |
| } |
| } |
| |
| ellipsized |= |
| print_multiline(f, n + 2, n_columns, flags, p, audit, |
| message, message_len, |
| highlight_shifted); |
| } |
| |
| if (flags & OUTPUT_CATALOG) |
| (void) print_catalog(f, j); |
| |
| return ellipsized; |
| } |
| |
| static int output_verbose( |
| FILE *f, |
| sd_journal *j, |
| OutputMode mode, |
| unsigned n_columns, |
| OutputFlags flags, |
| const Set *output_fields, |
| const size_t highlight[2]) { |
| |
| const void *data; |
| size_t length; |
| _cleanup_free_ char *cursor = NULL; |
| uint64_t realtime = 0; |
| char ts[FORMAT_TIMESTAMP_MAX + 7]; |
| const char *timestamp; |
| int r; |
| |
| assert(f); |
| assert(j); |
| |
| sd_journal_set_data_threshold(j, 0); |
| |
| 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) |
| return log_full_errno(r == -EADDRNOTAVAIL ? LOG_DEBUG : LOG_ERR, r, "Failed to get source realtime timestamp: %m"); |
| else { |
| _cleanup_free_ char *value = NULL; |
| |
| 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 = format_timestamp_style(ts, sizeof ts, realtime, |
| flags & OUTPUT_UTC ? TIMESTAMP_US_UTC : TIMESTAMP_US); |
| fprintf(f, "%s [%s]\n", |
| timestamp ?: "(no timestamp)", |
| cursor); |
| |
| JOURNAL_FOREACH_DATA_RETVAL(j, data, length, r) { |
| const char *c, *p; |
| int fieldlen; |
| const char *on = "", *off = ""; |
| _cleanup_free_ char *urlified = NULL; |
| size_t valuelen; |
| |
| c = memchr(data, '=', length); |
| if (!c) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Invalid field."); |
| fieldlen = c - (const char*) data; |
| |
| r = field_set_test(output_fields, data, fieldlen); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| continue; |
| |
| valuelen = length - 1 - fieldlen; |
| |
| if ((flags & OUTPUT_COLOR) && (p = startswith(data, "MESSAGE="))) { |
| on = ANSI_HIGHLIGHT; |
| off = ANSI_NORMAL; |
| } else if ((p = startswith(data, "CONFIG_FILE="))) { |
| if (terminal_urlify_path(p, NULL, &urlified) >= 0) { |
| p = urlified; |
| valuelen = strlen(urlified); |
| } |
| } else |
| p = c + 1; |
| |
| 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, false, |
| p, valuelen, |
| NULL); |
| 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) |
| (void) print_catalog(f, j); |
| |
| return 0; |
| } |
| |
| static int output_export( |
| FILE *f, |
| sd_journal *j, |
| OutputMode mode, |
| unsigned n_columns, |
| OutputFlags flags, |
| const Set *output_fields, |
| const size_t highlight[2]) { |
| |
| sd_id128_t boot_id; |
| char sid[SD_ID128_STRING_MAX]; |
| 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 (memory_startswith(data, length, "_BOOT_ID=")) |
| continue; |
| |
| c = memchr(data, '=', length); |
| if (!c) |
| return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
| "Invalid field."); |
| |
| 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 == -EBADMSG) { |
| log_debug_errno(r, "Skipping message we can't read: %m"); |
| return 0; |
| } |
| |
| 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); |
| } |
| } |
| |
| struct json_data { |
| JsonVariant* name; |
| size_t n_values; |
| JsonVariant* values[]; |
| }; |
| |
| static int update_json_data( |
| Hashmap *h, |
| OutputFlags flags, |
| const char *name, |
| const void *value, |
| size_t size) { |
| |
| _cleanup_(json_variant_unrefp) JsonVariant *v = NULL; |
| struct json_data *d; |
| int r; |
| |
| if (!(flags & OUTPUT_SHOW_ALL) && strlen(name) + 1 + size >= JSON_THRESHOLD) |
| r = json_variant_new_null(&v); |
| else if (utf8_is_printable(value, size)) |
| r = json_variant_new_stringn(&v, value, size); |
| else |
| r = json_variant_new_array_bytes(&v, value, size); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate JSON data: %m"); |
| |
| d = hashmap_get(h, name); |
| if (d) { |
| struct json_data *w; |
| |
| w = realloc(d, offsetof(struct json_data, values) + sizeof(JsonVariant*) * (d->n_values + 1)); |
| if (!w) |
| return log_oom(); |
| |
| d = w; |
| assert_se(hashmap_update(h, json_variant_string(d->name), d) >= 0); |
| } else { |
| _cleanup_(json_variant_unrefp) JsonVariant *n = NULL; |
| |
| r = json_variant_new_string(&n, name); |
| if (r < 0) |
| return log_error_errno(r, "Failed to allocate JSON name variant: %m"); |
| |
| d = malloc0(offsetof(struct json_data, values) + sizeof(JsonVariant*)); |
| if (!d) |
| return log_oom(); |
| |
| r = hashmap_put(h, json_variant_string(n), d); |
| if (r < 0) { |
| free(d); |
| return log_error_errno(r, "Failed to insert JSON name into hashmap: %m"); |
| } |
| |
| d->name = TAKE_PTR(n); |
| } |
| |
| d->values[d->n_values++] = TAKE_PTR(v); |
| return 0; |
| } |
| |
| static int update_json_data_split( |
| Hashmap *h, |
| OutputFlags flags, |
| const Set *output_fields, |
| const void *data, |
| size_t size) { |
| |
| const char *eq; |
| char *name; |
| |
| assert(h); |
| assert(data || size == 0); |
| |
| if (memory_startswith(data, size, "_BOOT_ID=")) |
| return 0; |
| |
| eq = memchr(data, '=', MIN(size, JSON_THRESHOLD)); |
| if (!eq) |
| return 0; |
| |
| if (eq == data) |
| return 0; |
| |
| name = strndupa(data, eq - (const char*) data); |
| if (output_fields && !set_contains(output_fields, name)) |
| return 0; |
| |
| return update_json_data(h, flags, name, eq + 1, size - (eq - (const char*) data) - 1); |
| } |
| |
| static int output_json( |
| FILE *f, |
| sd_journal *j, |
| OutputMode mode, |
| unsigned n_columns, |
| OutputFlags flags, |
| const Set *output_fields, |
| const size_t highlight[2]) { |
| |
| char sid[SD_ID128_STRING_MAX], usecbuf[DECIMAL_STR_MAX(usec_t)]; |
| _cleanup_(json_variant_unrefp) JsonVariant *object = NULL; |
| _cleanup_free_ char *cursor = NULL; |
| uint64_t realtime, monotonic; |
| JsonVariant **array = NULL; |
| struct json_data *d; |
| sd_id128_t boot_id; |
| Hashmap *h = NULL; |
| size_t n = 0; |
| int r; |
| |
| assert(j); |
| |
| (void) 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"); |
| |
| h = hashmap_new(&string_hash_ops); |
| if (!h) |
| return log_oom(); |
| |
| r = update_json_data(h, flags, "__CURSOR", cursor, strlen(cursor)); |
| if (r < 0) |
| goto finish; |
| |
| xsprintf(usecbuf, USEC_FMT, realtime); |
| r = update_json_data(h, flags, "__REALTIME_TIMESTAMP", usecbuf, strlen(usecbuf)); |
| if (r < 0) |
| goto finish; |
| |
| xsprintf(usecbuf, USEC_FMT, monotonic); |
| r = update_json_data(h, flags, "__MONOTONIC_TIMESTAMP", usecbuf, strlen(usecbuf)); |
| if (r < 0) |
| goto finish; |
| |
| sd_id128_to_string(boot_id, sid); |
| r = update_json_data(h, flags, "_BOOT_ID", sid, strlen(sid)); |
| if (r < 0) |
| goto finish; |
| |
| for (;;) { |
| const void *data; |
| size_t size; |
| |
| r = sd_journal_enumerate_data(j, &data, &size); |
| if (r == -EBADMSG) { |
| log_debug_errno(r, "Skipping message we can't read: %m"); |
| r = 0; |
| goto finish; |
| } |
| if (r < 0) { |
| log_error_errno(r, "Failed to read journal: %m"); |
| goto finish; |
| } |
| if (r == 0) |
| break; |
| |
| r = update_json_data_split(h, flags, output_fields, data, size); |
| if (r < 0) |
| goto finish; |
| } |
| |
| array = new(JsonVariant*, hashmap_size(h)*2); |
| if (!array) { |
| r = log_oom(); |
| goto finish; |
| } |
| |
| HASHMAP_FOREACH(d, h) { |
| assert(d->n_values > 0); |
| |
| array[n++] = json_variant_ref(d->name); |
| |
| if (d->n_values == 1) |
| array[n++] = json_variant_ref(d->values[0]); |
| else { |
| _cleanup_(json_variant_unrefp) JsonVariant *q = NULL; |
| |
| r = json_variant_new_array(&q, d->values, d->n_values); |
| if (r < 0) { |
| log_error_errno(r, "Failed to create JSON array: %m"); |
| goto finish; |
| } |
| |
| array[n++] = TAKE_PTR(q); |
| } |
| } |
| |
| r = json_variant_new_object(&object, array, n); |
| if (r < 0) { |
| log_error_errno(r, "Failed to allocate JSON object: %m"); |
| goto finish; |
| } |
| |
| json_variant_dump(object, |
| output_mode_to_json_format_flags(mode) | |
| (FLAGS_SET(flags, OUTPUT_COLOR) ? JSON_FORMAT_COLOR : 0), |
| f, NULL); |
| |
| r = 0; |
| |
| finish: |
| while ((d = hashmap_steal_first(h))) { |
| size_t k; |
| |
| json_variant_unref(d->name); |
| for (k = 0; k < d->n_values; k++) |
| json_variant_unref(d->values[k]); |
| |
| free(d); |
| } |
| |
| hashmap_free(h); |
| |
| json_variant_unref_many(array, n); |
| free(array); |
| |
| return r; |
| } |
| |
| static int output_cat_field( |
| FILE *f, |
| sd_journal *j, |
| OutputFlags flags, |
| int prio, |
| const char *field, |
| const size_t highlight[2]) { |
| |
| const char *color_on = "", *color_off = "", *highlight_on = ""; |
| const void *data; |
| size_t l, fl; |
| int r; |
| |
| if (FLAGS_SET(flags, OUTPUT_COLOR)) |
| get_log_colors(prio, &color_on, &color_off, &highlight_on); |
| |
| r = sd_journal_get_data(j, field, &data, &l); |
| if (r == -EBADMSG) { |
| log_debug_errno(r, "Skipping message we can't read: %m"); |
| return 0; |
| } |
| if (r == -ENOENT) /* An entry without the requested field */ |
| return 0; |
| if (r < 0) |
| return log_error_errno(r, "Failed to get data: %m"); |
| |
| fl = strlen(field); |
| assert(l >= fl + 1); |
| assert(((char*) data)[fl] == '='); |
| |
| data = (const uint8_t*) data + fl + 1; |
| l -= fl + 1; |
| |
| if (FLAGS_SET(flags, OUTPUT_COLOR)) { |
| if (highlight) { |
| assert(highlight[0] <= highlight[1]); |
| assert(highlight[1] <= l); |
| |
| fputs(color_on, f); |
| fwrite((const char*) data, 1, highlight[0], f); |
| fputs(highlight_on, f); |
| fwrite((const char*) data + highlight[0], 1, highlight[1] - highlight[0], f); |
| fputs(color_on, f); |
| fwrite((const char*) data + highlight[1], 1, l - highlight[1], f); |
| fputs(color_off, f); |
| } else { |
| fputs(color_on, f); |
| fwrite((const char*) data, 1, l, f); |
| fputs(color_off, f); |
| } |
| } else |
| fwrite((const char*) data, 1, l, f); |
| |
| fputc('\n', f); |
| return 0; |
| } |
| |
| static int output_cat( |
| FILE *f, |
| sd_journal *j, |
| OutputMode mode, |
| unsigned n_columns, |
| OutputFlags flags, |
| const Set *output_fields, |
| const size_t highlight[2]) { |
| |
| int r, prio = LOG_INFO; |
| const char *field; |
| |
| assert(j); |
| assert(f); |
| |
| (void) sd_journal_set_data_threshold(j, 0); |
| |
| if (FLAGS_SET(flags, OUTPUT_COLOR)) { |
| const void *data; |
| size_t l; |
| |
| /* Determine priority of this entry, so that we can color it nicely */ |
| |
| r = sd_journal_get_data(j, "PRIORITY", &data, &l); |
| if (r == -EBADMSG) { |
| log_debug_errno(r, "Skipping message we can't read: %m"); |
| return 0; |
| } |
| if (r < 0) { |
| if (r != -ENOENT) |
| return log_error_errno(r, "Failed to get data: %m"); |
| |
| /* An entry without PRIORITY */ |
| } else if (l == 10 && memcmp(data, "PRIORITY=", 9) == 0) { |
| char c = ((char*) data)[9]; |
| |
| if (c >= '0' && c <= '7') |
| prio = c - '0'; |
| } |
| } |
| |
| if (set_isempty(output_fields)) |
| return output_cat_field(f, j, flags, prio, "MESSAGE", highlight); |
| |
| SET_FOREACH(field, output_fields) { |
| r = output_cat_field(f, j, flags, prio, field, streq(field, "MESSAGE") ? highlight : NULL); |
| if (r < 0) |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| static int (*output_funcs[_OUTPUT_MODE_MAX])( |
| FILE *f, |
| sd_journal *j, |
| OutputMode mode, |
| unsigned n_columns, |
| OutputFlags flags, |
| const Set *output_fields, |
| const size_t highlight[2]) = { |
| |
| [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_JSON_SEQ] = output_json, |
| [OUTPUT_CAT] = output_cat, |
| [OUTPUT_WITH_UNIT] = output_short, |
| }; |
| |
| int show_journal_entry( |
| FILE *f, |
| sd_journal *j, |
| OutputMode mode, |
| unsigned n_columns, |
| OutputFlags flags, |
| char **output_fields, |
| const size_t highlight[2], |
| bool *ellipsized) { |
| |
| _cleanup_set_free_ Set *fields = NULL; |
| int r; |
| |
| assert(mode >= 0); |
| assert(mode < _OUTPUT_MODE_MAX); |
| |
| if (n_columns <= 0) |
| n_columns = columns(); |
| |
| r = set_put_strdupv(&fields, output_fields); |
| if (r < 0) |
| return r; |
| |
| r = output_funcs[mode](f, j, mode, n_columns, flags, fields, highlight); |
| |
| if (ellipsized && r > 0) |
| *ellipsized = true; |
| |
| return r; |
| } |
| |
| 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; |
| } |
| |
| 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); |
| |
| if (how_many == (unsigned) -1) |
| need_seek = true; |
| else { |
| /* 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 (;;) { |
| 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 = show_journal_entry(f, j, mode, n_columns, flags, NULL, 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); |
| |
| /* If we logged *something* and no permission error happened, than we can reliably |
| * emit the warning about rotation. If we didn't log anything and access errors |
| * happened, emit hint about permissions. Otherwise, give a generic message, since we |
| * can't diagnose the issue. */ |
| |
| bool noaccess = journal_access_blocked(j); |
| |
| if (line == 0 && noaccess) |
| fprintf(f, "Warning: some journal files were not opened due to insufficient permissions."); |
| else if (!noaccess) |
| fprintf(f, "Warning: journal has been rotated since unit was started, output may be incomplete.\n"); |
| else |
| fprintf(f, "Warning: journal has been rotated since unit was started and some journal " |
| "files were not opened due to insufficient permissions, output may be incomplete.\n"); |
| } |
| |
| warn_cutoff = false; |
| } |
| |
| 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; |
| char buf[ID128_UUID_STRING_MAX]; |
| pid_t pid, child; |
| 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 = namespace_fork("(sd-bootidns)", "(sd-bootid)", NULL, 0, FORK_RESET_SIGNALS|FORK_DEATHSIG, |
| pidnsfd, mntnsfd, -1, -1, rootfd, &child); |
| if (r < 0) |
| return r; |
| if (r == 0) { |
| int fd; |
| |
| pair[0] = safe_close(pair[0]); |
| |
| 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-bootidns)", 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, |
| const char *log_namespace, |
| 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_namespace(&j, log_namespace, journal_open_flags | SD_JOURNAL_INCLUDE_DEFAULT_NAMESPACE); |
| 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); |
| } |