diff options
author | Luke Shumaker <lukeshu@lukeshu.com> | 2017-05-10 18:16:16 -0400 |
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committer | Luke Shumaker <lukeshu@lukeshu.com> | 2017-05-10 18:16:16 -0400 |
commit | 225690a604e73a7f90859370cc5201b599b0e823 (patch) | |
tree | 00b9057ac2064b387efc6f07b5cff231300c9418 /src/shared/logs-show.c | |
parent | ff6514f056098c885323e8629d6ac6d113796f35 (diff) |
./tools/notsd-move
Diffstat (limited to 'src/shared/logs-show.c')
-rw-r--r-- | src/shared/logs-show.c | 1351 |
1 files changed, 0 insertions, 1351 deletions
diff --git a/src/shared/logs-show.c b/src/shared/logs-show.c deleted file mode 100644 index f9d9c4ed62..0000000000 --- a/src/shared/logs-show.c +++ /dev/null @@ -1,1351 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2012 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <errno.h> -#include <fcntl.h> -#include <signal.h> -#include <stdint.h> -#include <stdlib.h> -#include <string.h> -#include <sys/socket.h> -#include <syslog.h> -#include <time.h> -#include <unistd.h> - -#include "sd-id128.h" -#include "sd-journal.h" - -#include "alloc-util.h" -#include "fd-util.h" -#include "formats-util.h" -#include "hashmap.h" -#include "hostname-util.h" -#include "io-util.h" -#include "journal-internal.h" -#include "log.h" -#include "logs-show.h" -#include "macro.h" -#include "output-mode.h" -#include "parse-util.h" -#include "process-util.h" -#include "sparse-endian.h" -#include "stdio-util.h" -#include "string-table.h" -#include "string-util.h" -#include "terminal-util.h" -#include "time-util.h" -#include "utf8.h" -#include "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 4096 - -static int print_catalog(FILE *f, sd_journal *j) { - int r; - _cleanup_free_ char *t = NULL, *z = NULL; - - - r = sd_journal_get_catalog(j, &t); - if (r < 0) - return r; - - z = strreplace(strstrip(t), "\n", "\n-- "); - if (!z) - return log_oom(); - - fputs("-- ", f); - fputs(z, f); - fputc('\n', f); - - return 0; -} - -static int parse_field(const void *data, size_t length, const char *field, char **target, size_t *target_size) { - size_t fl, nl; - char *buf; - - assert(data); - assert(field); - assert(target); - - fl = strlen(field); - if (length < fl) - return 0; - - if (memcmp(data, field, fl)) - return 0; - - nl = length - fl; - buf = new(char, nl+1); - if (!buf) - return log_oom(); - - memcpy(buf, (const char*) data + fl, nl); - buf[nl] = 0; - - free(*target); - *target = buf; - - if (target_size) - *target_size = nl; - - return 1; -} - -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, const char* message, size_t message_len) { - const char *color_on = "", *color_off = ""; - const char *pos, *end; - bool ellipsized = false; - int line = 0; - - if (flags & OUTPUT_COLOR) { - if (priority <= LOG_ERR) { - color_on = ANSI_HIGHLIGHT_RED; - color_off = ANSI_NORMAL; - } else if (priority <= LOG_NOTICE) { - color_on = ANSI_HIGHLIGHT; - 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)) { - 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, "[%5llu.%06llu]", - (unsigned long long) (t / USEC_PER_SEC), - (unsigned long long) (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, 64)]; - struct tm *(*gettime_r)(const time_t *, struct tm *); - struct tm tm; - uint64_t x; - time_t t; - int r; - - assert(f); - assert(j); - - r = -ENXIO; - if (realtime) - r = safe_atou64(realtime, &x); - if (r < 0) - r = sd_journal_get_realtime_usec(j, &x); - if (r < 0) - return log_error_errno(r, "Failed to get realtime timestamp: %m"); - - if (mode == OUTPUT_SHORT_FULL) { - const char *k; - - if (flags & OUTPUT_UTC) - k = format_timestamp_utc(buf, sizeof(buf), x); - else - k = format_timestamp(buf, sizeof(buf), x); - if (!k) { - log_error("Failed to format timestamp."); - return -EINVAL; - } - - } else { - gettime_r = (flags & OUTPUT_UTC) ? gmtime_r : localtime_r; - t = (time_t) (x / USEC_PER_SEC); - - switch (mode) { - - case OUTPUT_SHORT_UNIX: - xsprintf(buf, "%10llu.%06llu", (unsigned long long) t, (unsigned long long) (x % USEC_PER_SEC)); - break; - - case OUTPUT_SHORT_ISO: - if (strftime(buf, sizeof(buf), "%Y-%m-%dT%H:%M:%S%z", gettime_r(&t, &tm)) <= 0) { - log_error("Failed for format ISO time"); - return -EINVAL; - } - break; - - case OUTPUT_SHORT: - case OUTPUT_SHORT_PRECISE: - - if (strftime(buf, sizeof(buf), "%b %d %H:%M:%S", gettime_r(&t, &tm)) <= 0) { - log_error("Failed to format syslog time"); - return -EINVAL; - } - - if (mode == OUTPUT_SHORT_PRECISE) { - size_t k; - - assert(sizeof(buf) > strlen(buf)); - k = sizeof(buf) - strlen(buf); - - r = snprintf(buf + strlen(buf), k, ".%06llu", (unsigned long long) (x % USEC_PER_SEC)); - if (r <= 0 || (size_t) r >= k) { /* too long? */ - log_error("Failed to format precise time"); - return -EINVAL; - } - } - 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) { - - int r; - const void *data; - size_t length; - size_t n = 0; - _cleanup_free_ char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, *message = NULL, *realtime = NULL, *monotonic = NULL, *priority = 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; - int p = LOG_INFO; - bool ellipsized = false; - - 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_field(data, length, "PRIORITY=", &priority, &priority_len); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_field(data, length, "_HOSTNAME=", &hostname, &hostname_len); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_field(data, length, "SYSLOG_IDENTIFIER=", &identifier, &identifier_len); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_field(data, length, "_COMM=", &comm, &comm_len); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_field(data, length, "_PID=", &pid, &pid_len); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_field(data, length, "SYSLOG_PID=", &fake_pid, &fake_pid_len); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &realtime, &realtime_len); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_field(data, length, "_SOURCE_MONOTONIC_TIMESTAMP=", &monotonic, &monotonic_len); - if (r < 0) - return r; - else if (r > 0) - continue; - - r = parse_field(data, length, "MESSAGE=", &message, &message_len); - 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); - - if (priority_len == 1 && *priority >= '0' && *priority <= '7') - p = *priority - '0'; - - 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 = NULL; - hostname_len = 0; - } - - if (hostname && shall_print(hostname, hostname_len, flags)) { - fprintf(f, " %.*s", (int) hostname_len, hostname); - n += hostname_len + 1; - } - - 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; - } - - 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); - ellipsized |= - print_multiline(f, n + 2, n_columns, flags, p, message, message_len); - } - - if (flags & OUTPUT_CATALOG) - print_catalog(f, j); - - return ellipsized; -} - -static int output_verbose( - FILE *f, - sd_journal *j, - OutputMode mode, - unsigned n_columns, - OutputFlags flags) { - - const void *data; - size_t length; - _cleanup_free_ char *cursor = NULL; - uint64_t realtime = 0; - char ts[FORMAT_TIMESTAMP_MAX + 7]; - 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=", &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"); - - fprintf(f, "%s [%s]\n", - flags & OUTPUT_UTC ? - format_timestamp_us_utc(ts, sizeof(ts), realtime) : - format_timestamp_us(ts, sizeof(ts), realtime), - 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; - - 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) { - - 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) { - - /* 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; - - if (utf8_is_printable_newline(data, length, false)) - fwrite(data, length, 1, f); - else { - const char *c; - uint64_t le64; - - c = memchr(data, '=', length); - if (!c) { - log_error("Invalid field."); - return -EINVAL; - } - - 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 (*p == '"' || *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) { - - 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; - - if (separator) { - if (mode == OUTPUT_JSON_PRETTY) - fputs(",\n\t", f); - else - fputs(", ", f); - } - - m = eq - (const char*) data; - - n = strndup(data, m); - if (!n) { - r = log_oom(); - goto finish; - } - - 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) { - - 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) = { - - [OUTPUT_SHORT] = output_short, - [OUTPUT_SHORT_ISO] = 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, - bool *ellipsized) { - - int ret; - assert(mode >= 0); - assert(mode < _OUTPUT_MODE_MAX); - - if (n_columns <= 0) - n_columns = columns(); - - ret = output_funcs[mode](f, j, mode, n_columns, flags); - fflush(stdout); - - 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, 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; - siginfo_t si; - 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; - - child = fork(); - if (child < 0) - return -errno; - - if (child == 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(child, &si); - if (r < 0 || si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) - return r < 0 ? r : -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 (_unlikely_(log_get_max_level() >= LOG_DEBUG)) { - _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); -} |