diff options
author | Kay Sievers <kay@vrfy.org> | 2012-04-12 01:51:49 +0200 |
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committer | Kay Sievers <kay@vrfy.org> | 2012-04-12 02:39:37 +0200 |
commit | f33d3ec1d7521c91da8b30ad5cb345d6416bb07d (patch) | |
tree | 8f0d1b16753d3370ea6223f0f10da1625c12c681 /src/logs-show.c | |
parent | 5e6f883dfcd2befce26102eba972d4c1d814dfdf (diff) |
move more common files to shared/ and add them to shared.la
Diffstat (limited to 'src/logs-show.c')
-rw-r--r-- | src/logs-show.c | 677 |
1 files changed, 0 insertions, 677 deletions
diff --git a/src/logs-show.c b/src/logs-show.c deleted file mode 100644 index fedb4532db..0000000000 --- a/src/logs-show.c +++ /dev/null @@ -1,677 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -/*** - 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 <time.h> -#include <assert.h> -#include <errno.h> -#include <sys/poll.h> -#include <string.h> - -#include "logs-show.h" -#include "log.h" -#include "util.h" - -#define PRINT_THRESHOLD 128 - -static bool contains_unprintable(const void *p, size_t l) { - const char *j; - - for (j = p; j < (const char *) p + l; j++) - if (*j < ' ' || *j >= 127) - return true; - - return false; -} - -static int parse_field(const void *data, size_t length, const char *field, char **target, size_t *target_size) { - size_t fl, nl; - void *buf; - - assert(data); - assert(field); - assert(target); - assert(target_size); - - fl = strlen(field); - if (length < fl) - return 0; - - if (memcmp(data, field, fl)) - return 0; - - nl = length - fl; - buf = malloc(nl+1); - memcpy(buf, (const char*) data + fl, nl); - ((char*)buf)[nl] = 0; - if (!buf) { - log_error("Out of memory"); - return -ENOMEM; - } - - free(*target); - *target = buf; - *target_size = nl; - - return 1; -} - -static bool shall_print(bool show_all, char *p, size_t l) { - if (show_all) - return true; - - if (l > PRINT_THRESHOLD) - return false; - - if (contains_unprintable(p, l)) - return false; - - return true; -} - -static int output_short(sd_journal *j, unsigned line, unsigned n_columns, bool show_all, bool monotonic_mode) { - int r; - const void *data; - size_t length; - size_t n = 0; - char *hostname = NULL, *identifier = NULL, *comm = NULL, *pid = NULL, *fake_pid = NULL, *message = NULL, *realtime = NULL, *monotonic = 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; - - assert(j); - - SD_JOURNAL_FOREACH_DATA(j, data, length) { - - r = parse_field(data, length, "_HOSTNAME=", &hostname, &hostname_len); - if (r < 0) - goto finish; - else if (r > 0) - continue; - - r = parse_field(data, length, "SYSLOG_IDENTIFIER=", &identifier, &identifier_len); - if (r < 0) - goto finish; - else if (r > 0) - continue; - - r = parse_field(data, length, "_COMM=", &comm, &comm_len); - if (r < 0) - goto finish; - else if (r > 0) - continue; - - r = parse_field(data, length, "_PID=", &pid, &pid_len); - if (r < 0) - goto finish; - else if (r > 0) - continue; - - r = parse_field(data, length, "SYSLOG_PID=", &fake_pid, &fake_pid_len); - if (r < 0) - goto finish; - else if (r > 0) - continue; - - r = parse_field(data, length, "_SOURCE_REALTIME_TIMESTAMP=", &realtime, &realtime_len); - if (r < 0) - goto finish; - else if (r > 0) - continue; - - r = parse_field(data, length, "_SOURCE_MONOTONIC_TIMESTAMP=", &monotonic, &monotonic_len); - if (r < 0) - goto finish; - else if (r > 0) - continue; - - r = parse_field(data, length, "MESSAGE=", &message, &message_len); - if (r < 0) - goto finish; - } - - if (!message) { - r = 0; - goto finish; - } - - if (monotonic_mode) { - uint64_t t; - sd_id128_t boot_id; - - r = -ENOENT; - - if (monotonic) - r = safe_atou64(monotonic, &t); - - if (r < 0) - r = sd_journal_get_monotonic_usec(j, &t, &boot_id); - - if (r < 0) { - log_error("Failed to get monotonic: %s", strerror(-r)); - goto finish; - } - - printf("[%5llu.%06llu]", - (unsigned long long) (t / USEC_PER_SEC), - (unsigned long long) (t % USEC_PER_SEC)); - - n += 1 + 5 + 1 + 6 + 1; - - } else { - char buf[64]; - uint64_t x; - time_t t; - struct tm tm; - - r = -ENOENT; - - if (realtime) - r = safe_atou64(realtime, &x); - - if (r < 0) - r = sd_journal_get_realtime_usec(j, &x); - - if (r < 0) { - log_error("Failed to get realtime: %s", strerror(-r)); - goto finish; - } - - t = (time_t) (x / USEC_PER_SEC); - if (strftime(buf, sizeof(buf), "%b %d %H:%M:%S", localtime_r(&t, &tm)) <= 0) { - log_error("Failed to format time."); - goto finish; - } - - fputs(buf, stdout); - n += strlen(buf); - } - - if (hostname && shall_print(show_all, hostname, hostname_len)) { - printf(" %.*s", (int) hostname_len, hostname); - n += hostname_len + 1; - } - - if (identifier && shall_print(show_all, identifier, identifier_len)) { - printf(" %.*s", (int) identifier_len, identifier); - n += identifier_len + 1; - } else if (comm && shall_print(show_all, comm, comm_len)) { - printf(" %.*s", (int) comm_len, comm); - n += comm_len + 1; - } else - putchar(' '); - - if (pid && shall_print(show_all, pid, pid_len)) { - printf("[%.*s]", (int) pid_len, pid); - n += pid_len + 2; - } else if (fake_pid && shall_print(show_all, fake_pid, fake_pid_len)) { - printf("[%.*s]", (int) fake_pid_len, fake_pid); - n += fake_pid_len + 2; - } - - if (show_all) - printf(": %.*s\n", (int) message_len, message); - else if (contains_unprintable(message, message_len)) { - char bytes[FORMAT_BYTES_MAX]; - printf(": [%s blob data]\n", format_bytes(bytes, sizeof(bytes), message_len)); - } else if (message_len + n < n_columns) - printf(": %.*s\n", (int) message_len, message); - else if (n < n_columns) { - char *e; - - e = ellipsize_mem(message, message_len, n_columns - n - 2, 90); - - if (!e) - printf(": %.*s\n", (int) message_len, message); - else - printf(": %s\n", e); - - free(e); - } else - fputs("\n", stdout); - - r = 0; - -finish: - free(hostname); - free(identifier); - free(comm); - free(pid); - free(fake_pid); - free(message); - free(monotonic); - free(realtime); - - return r; -} - -static int output_short_realtime(sd_journal *j, unsigned line, unsigned n_columns, bool show_all) { - return output_short(j, line, n_columns, show_all, false); -} - -static int output_short_monotonic(sd_journal *j, unsigned line, unsigned n_columns, bool show_all) { - return output_short(j, line, n_columns, show_all, true); -} - -static int output_verbose(sd_journal *j, unsigned line, unsigned n_columns, bool show_all) { - const void *data; - size_t length; - char *cursor; - uint64_t realtime; - char ts[FORMAT_TIMESTAMP_MAX]; - int r; - - assert(j); - - r = sd_journal_get_realtime_usec(j, &realtime); - if (r < 0) { - log_error("Failed to get realtime timestamp: %s", strerror(-r)); - return r; - } - - r = sd_journal_get_cursor(j, &cursor); - if (r < 0) { - log_error("Failed to get cursor: %s", strerror(-r)); - return r; - } - - printf("%s [%s]\n", - format_timestamp(ts, sizeof(ts), realtime), - cursor); - - free(cursor); - - SD_JOURNAL_FOREACH_DATA(j, data, length) { - if (!show_all && (length > PRINT_THRESHOLD || - contains_unprintable(data, length))) { - const char *c; - char bytes[FORMAT_BYTES_MAX]; - - c = memchr(data, '=', length); - if (!c) { - log_error("Invalid field."); - return -EINVAL; - } - - printf("\t%.*s=[%s blob data]\n", - (int) (c - (const char*) data), - (const char*) data, - format_bytes(bytes, sizeof(bytes), length - (c - (const char *) data) - 1)); - } else - printf("\t%.*s\n", (int) length, (const char*) data); - } - - return 0; -} - -static int output_export(sd_journal *j, unsigned line, unsigned n_columns, bool show_all) { - sd_id128_t boot_id; - char sid[33]; - int r; - usec_t realtime, monotonic; - char *cursor; - const void *data; - size_t length; - - assert(j); - - r = sd_journal_get_realtime_usec(j, &realtime); - if (r < 0) { - log_error("Failed to get realtime timestamp: %s", strerror(-r)); - return r; - } - - r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id); - if (r < 0) { - log_error("Failed to get monotonic timestamp: %s", strerror(-r)); - return r; - } - - r = sd_journal_get_cursor(j, &cursor); - if (r < 0) { - log_error("Failed to get cursor: %s", strerror(-r)); - return r; - } - - printf("__CURSOR=%s\n" - "__REALTIME_TIMESTAMP=%llu\n" - "__MONOTONIC_TIMESTAMP=%llu\n" - "_BOOT_ID=%s\n", - cursor, - (unsigned long long) realtime, - (unsigned long long) monotonic, - sd_id128_to_string(boot_id, sid)); - - free(cursor); - - SD_JOURNAL_FOREACH_DATA(j, data, length) { - - /* 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; - - if (contains_unprintable(data, length)) { - 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, stdout); - fputc('\n', stdout); - le64 = htole64(length - (c - (const char*) data) - 1); - fwrite(&le64, sizeof(le64), 1, stdout); - fwrite(c + 1, length - (c - (const char*) data) - 1, 1, stdout); - } else - fwrite(data, length, 1, stdout); - - fputc('\n', stdout); - } - - fputc('\n', stdout); - - return 0; -} - -static void json_escape(const char* p, size_t l) { - - if (contains_unprintable(p, l)) { - bool not_first = false; - - fputs("[ ", stdout); - - while (l > 0) { - if (not_first) - printf(", %u", (uint8_t) *p); - else { - not_first = true; - printf("%u", (uint8_t) *p); - } - - p++; - l--; - } - - fputs(" ]", stdout); - } else { - fputc('\"', stdout); - - while (l > 0) { - if (*p == '"' || *p == '\\') { - fputc('\\', stdout); - fputc(*p, stdout); - } else - fputc(*p, stdout); - - p++; - l--; - } - - fputc('\"', stdout); - } -} - -static int output_json(sd_journal *j, unsigned line, unsigned n_columns, bool show_all) { - uint64_t realtime, monotonic; - char *cursor; - const void *data; - size_t length; - sd_id128_t boot_id; - char sid[33]; - int r; - - assert(j); - - r = sd_journal_get_realtime_usec(j, &realtime); - if (r < 0) { - log_error("Failed to get realtime timestamp: %s", strerror(-r)); - return r; - } - - r = sd_journal_get_monotonic_usec(j, &monotonic, &boot_id); - if (r < 0) { - log_error("Failed to get monotonic timestamp: %s", strerror(-r)); - return r; - } - - r = sd_journal_get_cursor(j, &cursor); - if (r < 0) { - log_error("Failed to get cursor: %s", strerror(-r)); - return r; - } - - if (line == 1) - fputc('\n', stdout); - else - fputs(",\n", stdout); - - printf("{\n" - "\t\"__CURSOR\" : \"%s\",\n" - "\t\"__REALTIME_TIMESTAMP\" : \"%llu\",\n" - "\t\"__MONOTONIC_TIMESTAMP\" : \"%llu\",\n" - "\t\"_BOOT_ID\" : \"%s\"", - cursor, - (unsigned long long) realtime, - (unsigned long long) monotonic, - sd_id128_to_string(boot_id, sid)); - - free(cursor); - - SD_JOURNAL_FOREACH_DATA(j, data, length) { - const char *c; - - /* 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; - - c = memchr(data, '=', length); - if (!c) { - log_error("Invalid field."); - return -EINVAL; - } - - fputs(",\n\t", stdout); - json_escape(data, c - (const char*) data); - fputs(" : ", stdout); - json_escape(c + 1, length - (c - (const char*) data) - 1); - } - - fputs("\n}", stdout); - fflush(stdout); - - return 0; -} - -static int output_cat(sd_journal *j, unsigned line, unsigned n_columns, bool show_all) { - const void *data; - size_t l; - int r; - - assert(j); - - r = sd_journal_get_data(j, "MESSAGE", &data, &l); - if (r < 0) { - log_error("Failed to get data: %s", strerror(-r)); - return r; - } - - assert(l >= 8); - - fwrite((const char*) data + 8, 1, l - 8, stdout); - putchar('\n'); - - return 0; -} - -static int (*output_funcs[_OUTPUT_MODE_MAX])(sd_journal*j, unsigned line, unsigned n_columns, bool show_all) = { - [OUTPUT_SHORT] = output_short_realtime, - [OUTPUT_SHORT_MONOTONIC] = output_short_monotonic, - [OUTPUT_VERBOSE] = output_verbose, - [OUTPUT_EXPORT] = output_export, - [OUTPUT_JSON] = output_json, - [OUTPUT_CAT] = output_cat -}; - -int output_journal(sd_journal *j, OutputMode mode, unsigned line, unsigned n_columns, bool show_all) { - assert(mode >= 0); - assert(mode < _OUTPUT_MODE_MAX); - - if (n_columns <= 0) - n_columns = columns(); - - return output_funcs[mode](j, line, n_columns, show_all); -} - -int show_journal_by_unit( - const char *unit, - OutputMode mode, - unsigned n_columns, - usec_t not_before, - unsigned how_many, - bool show_all, - bool follow) { - - char *m = NULL; - sd_journal *j; - int r; - int fd; - unsigned line = 0; - bool need_seek = false; - - assert(mode >= 0); - assert(mode < _OUTPUT_MODE_MAX); - assert(unit); - - if (!endswith(unit, ".service") && - !endswith(unit, ".socket") && - !endswith(unit, ".mount") && - !endswith(unit, ".swap")) - return 0; - - if (how_many <= 0) - return 0; - - if (asprintf(&m, "_SYSTEMD_UNIT=%s", unit) < 0) { - r = -ENOMEM; - goto finish; - } - - r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY|SD_JOURNAL_SYSTEM_ONLY); - if (r < 0) - goto finish; - - fd = sd_journal_get_fd(j); - if (fd < 0) - goto finish; - - r = sd_journal_add_match(j, m, strlen(m)); - if (r < 0) - goto finish; - - r = sd_journal_seek_tail(j); - if (r < 0) - goto finish; - - r = sd_journal_previous_skip(j, how_many); - if (r < 0) - goto finish; - - if (mode == OUTPUT_JSON) { - fputc('[', stdout); - fflush(stdout); - } - - for (;;) { - for (;;) { - usec_t usec; - - if (need_seek) { - r = sd_journal_next(j); - if (r < 0) - goto finish; - } - - 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) - goto finish; - - if (usec < not_before) - continue; - } - - line ++; - - r = output_journal(j, mode, line, n_columns, show_all); - if (r < 0) - goto finish; - } - - if (!follow) - break; - - r = fd_wait_for_event(fd, POLLIN, (usec_t) -1); - if (r < 0) - goto finish; - - r = sd_journal_process(j); - if (r < 0) - goto finish; - - } - - if (mode == OUTPUT_JSON) - fputs("\n]\n", stdout); - -finish: - if (m) - free(m); - - if (j) - sd_journal_close(j); - - return r; -} - -static const char *const output_mode_table[_OUTPUT_MODE_MAX] = { - [OUTPUT_SHORT] = "short", - [OUTPUT_SHORT_MONOTONIC] = "short-monotonic", - [OUTPUT_VERBOSE] = "verbose", - [OUTPUT_EXPORT] = "export", - [OUTPUT_JSON] = "json", - [OUTPUT_CAT] = "cat" -}; - -DEFINE_STRING_TABLE_LOOKUP(output_mode, OutputMode); |