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-rw-r--r--src/grp-journal/journalctl/journalctl.c2600
1 files changed, 2600 insertions, 0 deletions
diff --git a/src/grp-journal/journalctl/journalctl.c b/src/grp-journal/journalctl/journalctl.c
new file mode 100644
index 0000000000..3602bd0556
--- /dev/null
+++ b/src/grp-journal/journalctl/journalctl.c
@@ -0,0 +1,2600 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2011 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 <fnmatch.h>
+#include <getopt.h>
+#include <linux/fs.h>
+#include <locale.h>
+#include <poll.h>
+#include <signal.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/inotify.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <systemd/sd-bus.h>
+#include <systemd/sd-journal.h>
+
+#include "acl-util.h"
+#include "alloc-util.h"
+#include "bus-error.h"
+#include "bus-util.h"
+#include "catalog.h"
+#include "chattr-util.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "fs-util.h"
+#include "fsprg.h"
+#include "glob-util.h"
+#include "hostname-util.h"
+#include "io-util.h"
+#include "journal-def.h"
+#include "journal-internal.h"
+#include "journal-qrcode.h"
+#include "journal-vacuum.h"
+#include "journal-verify.h"
+#include "locale-util.h"
+#include "log.h"
+#include "logs-show.h"
+#include "mkdir.h"
+#include "pager.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "rlimit-util.h"
+#include "set.h"
+#include "sigbus.h"
+#include "strv.h"
+#include "syslog-util.h"
+#include "terminal-util.h"
+#include "udev.h"
+#include "udev-util.h"
+#include "unit-name.h"
+#include "user-util.h"
+
+#define DEFAULT_FSS_INTERVAL_USEC (15*USEC_PER_MINUTE)
+
+enum {
+ /* Special values for arg_lines */
+ ARG_LINES_DEFAULT = -2,
+ ARG_LINES_ALL = -1,
+};
+
+static OutputMode arg_output = OUTPUT_SHORT;
+static bool arg_utc = false;
+static bool arg_pager_end = false;
+static bool arg_follow = false;
+static bool arg_full = true;
+static bool arg_all = false;
+static bool arg_no_pager = false;
+static int arg_lines = ARG_LINES_DEFAULT;
+static bool arg_no_tail = false;
+static bool arg_quiet = false;
+static bool arg_merge = false;
+static bool arg_boot = false;
+static sd_id128_t arg_boot_id = {};
+static int arg_boot_offset = 0;
+static bool arg_dmesg = false;
+static bool arg_no_hostname = false;
+static const char *arg_cursor = NULL;
+static const char *arg_after_cursor = NULL;
+static bool arg_show_cursor = false;
+static const char *arg_directory = NULL;
+static char **arg_file = NULL;
+static bool arg_file_stdin = false;
+static int arg_priorities = 0xFF;
+static const char *arg_verify_key = NULL;
+#ifdef HAVE_GCRYPT
+static usec_t arg_interval = DEFAULT_FSS_INTERVAL_USEC;
+static bool arg_force = false;
+#endif
+static usec_t arg_since, arg_until;
+static bool arg_since_set = false, arg_until_set = false;
+static char **arg_syslog_identifier = NULL;
+static char **arg_system_units = NULL;
+static char **arg_user_units = NULL;
+static const char *arg_field = NULL;
+static bool arg_catalog = false;
+static bool arg_reverse = false;
+static int arg_journal_type = 0;
+static char *arg_root = NULL;
+static const char *arg_machine = NULL;
+static uint64_t arg_vacuum_size = 0;
+static uint64_t arg_vacuum_n_files = 0;
+static usec_t arg_vacuum_time = 0;
+
+static enum {
+ ACTION_SHOW,
+ ACTION_NEW_ID128,
+ ACTION_PRINT_HEADER,
+ ACTION_SETUP_KEYS,
+ ACTION_VERIFY,
+ ACTION_DISK_USAGE,
+ ACTION_LIST_CATALOG,
+ ACTION_DUMP_CATALOG,
+ ACTION_UPDATE_CATALOG,
+ ACTION_LIST_BOOTS,
+ ACTION_FLUSH,
+ ACTION_SYNC,
+ ACTION_ROTATE,
+ ACTION_VACUUM,
+ ACTION_LIST_FIELDS,
+ ACTION_LIST_FIELD_NAMES,
+} arg_action = ACTION_SHOW;
+
+typedef struct BootId {
+ sd_id128_t id;
+ uint64_t first;
+ uint64_t last;
+ LIST_FIELDS(struct BootId, boot_list);
+} BootId;
+
+static int add_matches_for_device(sd_journal *j, const char *devpath) {
+ int r;
+ _cleanup_udev_unref_ struct udev *udev = NULL;
+ _cleanup_udev_device_unref_ struct udev_device *device = NULL;
+ struct udev_device *d = NULL;
+ struct stat st;
+
+ assert(j);
+ assert(devpath);
+
+ if (!path_startswith(devpath, "/dev/")) {
+ log_error("Devpath does not start with /dev/");
+ return -EINVAL;
+ }
+
+ udev = udev_new();
+ if (!udev)
+ return log_oom();
+
+ r = stat(devpath, &st);
+ if (r < 0)
+ log_error_errno(errno, "Couldn't stat file: %m");
+
+ d = device = udev_device_new_from_devnum(udev, S_ISBLK(st.st_mode) ? 'b' : 'c', st.st_rdev);
+ if (!device)
+ return log_error_errno(errno, "Failed to get udev device from devnum %u:%u: %m", major(st.st_rdev), minor(st.st_rdev));
+
+ while (d) {
+ _cleanup_free_ char *match = NULL;
+ const char *subsys, *sysname, *devnode;
+
+ subsys = udev_device_get_subsystem(d);
+ if (!subsys) {
+ d = udev_device_get_parent(d);
+ continue;
+ }
+
+ sysname = udev_device_get_sysname(d);
+ if (!sysname) {
+ d = udev_device_get_parent(d);
+ continue;
+ }
+
+ match = strjoin("_KERNEL_DEVICE=+", subsys, ":", sysname, NULL);
+ if (!match)
+ return log_oom();
+
+ r = sd_journal_add_match(j, match, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add match: %m");
+
+ devnode = udev_device_get_devnode(d);
+ if (devnode) {
+ _cleanup_free_ char *match1 = NULL;
+
+ r = stat(devnode, &st);
+ if (r < 0)
+ return log_error_errno(r, "Failed to stat() device node \"%s\": %m", devnode);
+
+ r = asprintf(&match1, "_KERNEL_DEVICE=%c%u:%u", S_ISBLK(st.st_mode) ? 'b' : 'c', major(st.st_rdev), minor(st.st_rdev));
+ if (r < 0)
+ return log_oom();
+
+ r = sd_journal_add_match(j, match1, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add match: %m");
+ }
+
+ d = udev_device_get_parent(d);
+ }
+
+ r = add_match_this_boot(j, arg_machine);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add match for the current boot: %m");
+
+ return 0;
+}
+
+static char *format_timestamp_maybe_utc(char *buf, size_t l, usec_t t) {
+
+ if (arg_utc)
+ return format_timestamp_utc(buf, l, t);
+
+ return format_timestamp(buf, l, t);
+}
+
+static int parse_boot_descriptor(const char *x, sd_id128_t *boot_id, int *offset) {
+ sd_id128_t id = SD_ID128_NULL;
+ int off = 0, r;
+
+ if (strlen(x) >= 32) {
+ char *t;
+
+ t = strndupa(x, 32);
+ r = sd_id128_from_string(t, &id);
+ if (r >= 0)
+ x += 32;
+
+ if (*x != '-' && *x != '+' && *x != 0)
+ return -EINVAL;
+
+ if (*x != 0) {
+ r = safe_atoi(x, &off);
+ if (r < 0)
+ return r;
+ }
+ } else {
+ r = safe_atoi(x, &off);
+ if (r < 0)
+ return r;
+ }
+
+ if (boot_id)
+ *boot_id = id;
+
+ if (offset)
+ *offset = off;
+
+ return 0;
+}
+
+static void help(void) {
+
+ pager_open(arg_no_pager, arg_pager_end);
+
+ printf("%s [OPTIONS...] [MATCHES...]\n\n"
+ "Query the journal.\n\n"
+ "Options:\n"
+ " --system Show the system journal\n"
+ " --user Show the user journal for the current user\n"
+ " -M --machine=CONTAINER Operate on local container\n"
+ " -S --since=DATE Show entries not older than the specified date\n"
+ " -U --until=DATE Show entries not newer than the specified date\n"
+ " -c --cursor=CURSOR Show entries starting at the specified cursor\n"
+ " --after-cursor=CURSOR Show entries after the specified cursor\n"
+ " --show-cursor Print the cursor after all the entries\n"
+ " -b --boot[=ID] Show current boot or the specified boot\n"
+ " --list-boots Show terse information about recorded boots\n"
+ " -k --dmesg Show kernel message log from the current boot\n"
+ " -u --unit=UNIT Show logs from the specified unit\n"
+ " --user-unit=UNIT Show logs from the specified user unit\n"
+ " -t --identifier=STRING Show entries with the specified syslog identifier\n"
+ " -p --priority=RANGE Show entries with the specified priority\n"
+ " -e --pager-end Immediately jump to the end in the pager\n"
+ " -f --follow Follow the journal\n"
+ " -n --lines[=INTEGER] Number of journal entries to show\n"
+ " --no-tail Show all lines, even in follow mode\n"
+ " -r --reverse Show the newest entries first\n"
+ " -o --output=STRING Change journal output mode (short, short-iso,\n"
+ " short-precise, short-monotonic, verbose,\n"
+ " export, json, json-pretty, json-sse, cat)\n"
+ " --utc Express time in Coordinated Universal Time (UTC)\n"
+ " -x --catalog Add message explanations where available\n"
+ " --no-full Ellipsize fields\n"
+ " -a --all Show all fields, including long and unprintable\n"
+ " -q --quiet Do not show info messages and privilege warning\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " --no-hostname Suppress output of hostname field\n"
+ " -m --merge Show entries from all available journals\n"
+ " -D --directory=PATH Show journal files from directory\n"
+ " --file=PATH Show journal file\n"
+ " --root=ROOT Operate on catalog files below a root directory\n"
+#ifdef HAVE_GCRYPT
+ " --interval=TIME Time interval for changing the FSS sealing key\n"
+ " --verify-key=KEY Specify FSS verification key\n"
+ " --force Override of the FSS key pair with --setup-keys\n"
+#endif
+ "\nCommands:\n"
+ " -h --help Show this help text\n"
+ " --version Show package version\n"
+ " -N --fields List all field names currently used\n"
+ " -F --field=FIELD List all values that a specified field takes\n"
+ " --disk-usage Show total disk usage of all journal files\n"
+ " --vacuum-size=BYTES Reduce disk usage below specified size\n"
+ " --vacuum-files=INT Leave only the specified number of journal files\n"
+ " --vacuum-time=TIME Remove journal files older than specified time\n"
+ " --verify Verify journal file consistency\n"
+ " --sync Synchronize unwritten journal messages to disk\n"
+ " --flush Flush all journal data from /run into /var\n"
+ " --rotate Request immediate rotation of the journal files\n"
+ " --header Show journal header information\n"
+ " --list-catalog Show all message IDs in the catalog\n"
+ " --dump-catalog Show entries in the message catalog\n"
+ " --update-catalog Update the message catalog database\n"
+ " --new-id128 Generate a new 128-bit ID\n"
+#ifdef HAVE_GCRYPT
+ " --setup-keys Generate a new FSS key pair\n"
+#endif
+ , program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_NO_PAGER,
+ ARG_NO_FULL,
+ ARG_NO_TAIL,
+ ARG_NEW_ID128,
+ ARG_LIST_BOOTS,
+ ARG_USER,
+ ARG_SYSTEM,
+ ARG_ROOT,
+ ARG_HEADER,
+ ARG_SETUP_KEYS,
+ ARG_FILE,
+ ARG_INTERVAL,
+ ARG_VERIFY,
+ ARG_VERIFY_KEY,
+ ARG_DISK_USAGE,
+ ARG_AFTER_CURSOR,
+ ARG_SHOW_CURSOR,
+ ARG_USER_UNIT,
+ ARG_LIST_CATALOG,
+ ARG_DUMP_CATALOG,
+ ARG_UPDATE_CATALOG,
+ ARG_FORCE,
+ ARG_UTC,
+ ARG_SYNC,
+ ARG_FLUSH,
+ ARG_ROTATE,
+ ARG_VACUUM_SIZE,
+ ARG_VACUUM_FILES,
+ ARG_VACUUM_TIME,
+ ARG_NO_HOSTNAME,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version" , no_argument, NULL, ARG_VERSION },
+ { "no-pager", no_argument, NULL, ARG_NO_PAGER },
+ { "pager-end", no_argument, NULL, 'e' },
+ { "follow", no_argument, NULL, 'f' },
+ { "force", no_argument, NULL, ARG_FORCE },
+ { "output", required_argument, NULL, 'o' },
+ { "all", no_argument, NULL, 'a' },
+ { "full", no_argument, NULL, 'l' },
+ { "no-full", no_argument, NULL, ARG_NO_FULL },
+ { "lines", optional_argument, NULL, 'n' },
+ { "no-tail", no_argument, NULL, ARG_NO_TAIL },
+ { "new-id128", no_argument, NULL, ARG_NEW_ID128 },
+ { "quiet", no_argument, NULL, 'q' },
+ { "merge", no_argument, NULL, 'm' },
+ { "boot", optional_argument, NULL, 'b' },
+ { "list-boots", no_argument, NULL, ARG_LIST_BOOTS },
+ { "this-boot", optional_argument, NULL, 'b' }, /* deprecated */
+ { "dmesg", no_argument, NULL, 'k' },
+ { "system", no_argument, NULL, ARG_SYSTEM },
+ { "user", no_argument, NULL, ARG_USER },
+ { "directory", required_argument, NULL, 'D' },
+ { "file", required_argument, NULL, ARG_FILE },
+ { "root", required_argument, NULL, ARG_ROOT },
+ { "header", no_argument, NULL, ARG_HEADER },
+ { "identifier", required_argument, NULL, 't' },
+ { "priority", required_argument, NULL, 'p' },
+ { "setup-keys", no_argument, NULL, ARG_SETUP_KEYS },
+ { "interval", required_argument, NULL, ARG_INTERVAL },
+ { "verify", no_argument, NULL, ARG_VERIFY },
+ { "verify-key", required_argument, NULL, ARG_VERIFY_KEY },
+ { "disk-usage", no_argument, NULL, ARG_DISK_USAGE },
+ { "cursor", required_argument, NULL, 'c' },
+ { "after-cursor", required_argument, NULL, ARG_AFTER_CURSOR },
+ { "show-cursor", no_argument, NULL, ARG_SHOW_CURSOR },
+ { "since", required_argument, NULL, 'S' },
+ { "until", required_argument, NULL, 'U' },
+ { "unit", required_argument, NULL, 'u' },
+ { "user-unit", required_argument, NULL, ARG_USER_UNIT },
+ { "field", required_argument, NULL, 'F' },
+ { "fields", no_argument, NULL, 'N' },
+ { "catalog", no_argument, NULL, 'x' },
+ { "list-catalog", no_argument, NULL, ARG_LIST_CATALOG },
+ { "dump-catalog", no_argument, NULL, ARG_DUMP_CATALOG },
+ { "update-catalog", no_argument, NULL, ARG_UPDATE_CATALOG },
+ { "reverse", no_argument, NULL, 'r' },
+ { "machine", required_argument, NULL, 'M' },
+ { "utc", no_argument, NULL, ARG_UTC },
+ { "flush", no_argument, NULL, ARG_FLUSH },
+ { "sync", no_argument, NULL, ARG_SYNC },
+ { "rotate", no_argument, NULL, ARG_ROTATE },
+ { "vacuum-size", required_argument, NULL, ARG_VACUUM_SIZE },
+ { "vacuum-files", required_argument, NULL, ARG_VACUUM_FILES },
+ { "vacuum-time", required_argument, NULL, ARG_VACUUM_TIME },
+ { "no-hostname", no_argument, NULL, ARG_NO_HOSTNAME },
+ {}
+ };
+
+ int c, r;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hefo:aln::qmb::kD:p:c:S:U:t:u:NF:xrM:", options, NULL)) >= 0)
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ return version();
+
+ case ARG_NO_PAGER:
+ arg_no_pager = true;
+ break;
+
+ case 'e':
+ arg_pager_end = true;
+
+ if (arg_lines == ARG_LINES_DEFAULT)
+ arg_lines = 1000;
+
+ break;
+
+ case 'f':
+ arg_follow = true;
+ break;
+
+ case 'o':
+ arg_output = output_mode_from_string(optarg);
+ if (arg_output < 0) {
+ log_error("Unknown output format '%s'.", optarg);
+ return -EINVAL;
+ }
+
+ if (arg_output == OUTPUT_EXPORT ||
+ arg_output == OUTPUT_JSON ||
+ arg_output == OUTPUT_JSON_PRETTY ||
+ arg_output == OUTPUT_JSON_SSE ||
+ arg_output == OUTPUT_CAT)
+ arg_quiet = true;
+
+ break;
+
+ case 'l':
+ arg_full = true;
+ break;
+
+ case ARG_NO_FULL:
+ arg_full = false;
+ break;
+
+ case 'a':
+ arg_all = true;
+ break;
+
+ case 'n':
+ if (optarg) {
+ if (streq(optarg, "all"))
+ arg_lines = ARG_LINES_ALL;
+ else {
+ r = safe_atoi(optarg, &arg_lines);
+ if (r < 0 || arg_lines < 0) {
+ log_error("Failed to parse lines '%s'", optarg);
+ return -EINVAL;
+ }
+ }
+ } else {
+ arg_lines = 10;
+
+ /* Hmm, no argument? Maybe the next
+ * word on the command line is
+ * supposed to be the argument? Let's
+ * see if there is one, and is
+ * parsable. */
+ if (optind < argc) {
+ int n;
+ if (streq(argv[optind], "all")) {
+ arg_lines = ARG_LINES_ALL;
+ optind++;
+ } else if (safe_atoi(argv[optind], &n) >= 0 && n >= 0) {
+ arg_lines = n;
+ optind++;
+ }
+ }
+ }
+
+ break;
+
+ case ARG_NO_TAIL:
+ arg_no_tail = true;
+ break;
+
+ case ARG_NEW_ID128:
+ arg_action = ACTION_NEW_ID128;
+ break;
+
+ case 'q':
+ arg_quiet = true;
+ break;
+
+ case 'm':
+ arg_merge = true;
+ break;
+
+ case 'b':
+ arg_boot = true;
+
+ if (optarg) {
+ r = parse_boot_descriptor(optarg, &arg_boot_id, &arg_boot_offset);
+ if (r < 0) {
+ log_error("Failed to parse boot descriptor '%s'", optarg);
+ return -EINVAL;
+ }
+ } else {
+
+ /* Hmm, no argument? Maybe the next
+ * word on the command line is
+ * supposed to be the argument? Let's
+ * see if there is one and is parsable
+ * as a boot descriptor... */
+
+ if (optind < argc &&
+ parse_boot_descriptor(argv[optind], &arg_boot_id, &arg_boot_offset) >= 0)
+ optind++;
+ }
+
+ break;
+
+ case ARG_LIST_BOOTS:
+ arg_action = ACTION_LIST_BOOTS;
+ break;
+
+ case 'k':
+ arg_boot = arg_dmesg = true;
+ break;
+
+ case ARG_SYSTEM:
+ arg_journal_type |= SD_JOURNAL_SYSTEM;
+ break;
+
+ case ARG_USER:
+ arg_journal_type |= SD_JOURNAL_CURRENT_USER;
+ break;
+
+ case 'M':
+ arg_machine = optarg;
+ break;
+
+ case 'D':
+ arg_directory = optarg;
+ break;
+
+ case ARG_FILE:
+ if (streq(optarg, "-"))
+ /* An undocumented feature: we can read journal files from STDIN. We don't document
+ * this though, since after all we only support this for mmap-able, seekable files, and
+ * not for example pipes which are probably the primary usecase for reading things from
+ * STDIN. To avoid confusion we hence don't document this feature. */
+ arg_file_stdin = true;
+ else {
+ r = glob_extend(&arg_file, optarg);
+ if (r < 0)
+ return log_error_errno(r, "Failed to add paths: %m");
+ }
+ break;
+
+ case ARG_ROOT:
+ r = parse_path_argument_and_warn(optarg, true, &arg_root);
+ if (r < 0)
+ return r;
+ break;
+
+ case 'c':
+ arg_cursor = optarg;
+ break;
+
+ case ARG_AFTER_CURSOR:
+ arg_after_cursor = optarg;
+ break;
+
+ case ARG_SHOW_CURSOR:
+ arg_show_cursor = true;
+ break;
+
+ case ARG_HEADER:
+ arg_action = ACTION_PRINT_HEADER;
+ break;
+
+ case ARG_VERIFY:
+ arg_action = ACTION_VERIFY;
+ break;
+
+ case ARG_DISK_USAGE:
+ arg_action = ACTION_DISK_USAGE;
+ break;
+
+ case ARG_VACUUM_SIZE:
+ r = parse_size(optarg, 1024, &arg_vacuum_size);
+ if (r < 0) {
+ log_error("Failed to parse vacuum size: %s", optarg);
+ return r;
+ }
+
+ arg_action = ACTION_VACUUM;
+ break;
+
+ case ARG_VACUUM_FILES:
+ r = safe_atou64(optarg, &arg_vacuum_n_files);
+ if (r < 0) {
+ log_error("Failed to parse vacuum files: %s", optarg);
+ return r;
+ }
+
+ arg_action = ACTION_VACUUM;
+ break;
+
+ case ARG_VACUUM_TIME:
+ r = parse_sec(optarg, &arg_vacuum_time);
+ if (r < 0) {
+ log_error("Failed to parse vacuum time: %s", optarg);
+ return r;
+ }
+
+ arg_action = ACTION_VACUUM;
+ break;
+
+#ifdef HAVE_GCRYPT
+ case ARG_FORCE:
+ arg_force = true;
+ break;
+
+ case ARG_SETUP_KEYS:
+ arg_action = ACTION_SETUP_KEYS;
+ break;
+
+
+ case ARG_VERIFY_KEY:
+ arg_action = ACTION_VERIFY;
+ arg_verify_key = optarg;
+ arg_merge = false;
+ break;
+
+ case ARG_INTERVAL:
+ r = parse_sec(optarg, &arg_interval);
+ if (r < 0 || arg_interval <= 0) {
+ log_error("Failed to parse sealing key change interval: %s", optarg);
+ return -EINVAL;
+ }
+ break;
+#else
+ case ARG_SETUP_KEYS:
+ case ARG_VERIFY_KEY:
+ case ARG_INTERVAL:
+ case ARG_FORCE:
+ log_error("Forward-secure sealing not available.");
+ return -EOPNOTSUPP;
+#endif
+
+ case 'p': {
+ const char *dots;
+
+ dots = strstr(optarg, "..");
+ if (dots) {
+ char *a;
+ int from, to, i;
+
+ /* a range */
+ a = strndup(optarg, dots - optarg);
+ if (!a)
+ return log_oom();
+
+ from = log_level_from_string(a);
+ to = log_level_from_string(dots + 2);
+ free(a);
+
+ if (from < 0 || to < 0) {
+ log_error("Failed to parse log level range %s", optarg);
+ return -EINVAL;
+ }
+
+ arg_priorities = 0;
+
+ if (from < to) {
+ for (i = from; i <= to; i++)
+ arg_priorities |= 1 << i;
+ } else {
+ for (i = to; i <= from; i++)
+ arg_priorities |= 1 << i;
+ }
+
+ } else {
+ int p, i;
+
+ p = log_level_from_string(optarg);
+ if (p < 0) {
+ log_error("Unknown log level %s", optarg);
+ return -EINVAL;
+ }
+
+ arg_priorities = 0;
+
+ for (i = 0; i <= p; i++)
+ arg_priorities |= 1 << i;
+ }
+
+ break;
+ }
+
+ case 'S':
+ r = parse_timestamp(optarg, &arg_since);
+ if (r < 0) {
+ log_error("Failed to parse timestamp: %s", optarg);
+ return -EINVAL;
+ }
+ arg_since_set = true;
+ break;
+
+ case 'U':
+ r = parse_timestamp(optarg, &arg_until);
+ if (r < 0) {
+ log_error("Failed to parse timestamp: %s", optarg);
+ return -EINVAL;
+ }
+ arg_until_set = true;
+ break;
+
+ case 't':
+ r = strv_extend(&arg_syslog_identifier, optarg);
+ if (r < 0)
+ return log_oom();
+ break;
+
+ case 'u':
+ r = strv_extend(&arg_system_units, optarg);
+ if (r < 0)
+ return log_oom();
+ break;
+
+ case ARG_USER_UNIT:
+ r = strv_extend(&arg_user_units, optarg);
+ if (r < 0)
+ return log_oom();
+ break;
+
+ case 'F':
+ arg_action = ACTION_LIST_FIELDS;
+ arg_field = optarg;
+ break;
+
+ case 'N':
+ arg_action = ACTION_LIST_FIELD_NAMES;
+ break;
+
+ case ARG_NO_HOSTNAME:
+ arg_no_hostname = true;
+ break;
+
+ case 'x':
+ arg_catalog = true;
+ break;
+
+ case ARG_LIST_CATALOG:
+ arg_action = ACTION_LIST_CATALOG;
+ break;
+
+ case ARG_DUMP_CATALOG:
+ arg_action = ACTION_DUMP_CATALOG;
+ break;
+
+ case ARG_UPDATE_CATALOG:
+ arg_action = ACTION_UPDATE_CATALOG;
+ break;
+
+ case 'r':
+ arg_reverse = true;
+ break;
+
+ case ARG_UTC:
+ arg_utc = true;
+ break;
+
+ case ARG_FLUSH:
+ arg_action = ACTION_FLUSH;
+ break;
+
+ case ARG_ROTATE:
+ arg_action = ACTION_ROTATE;
+ break;
+
+ case ARG_SYNC:
+ arg_action = ACTION_SYNC;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+
+ if (arg_follow && !arg_no_tail && !arg_since && arg_lines == ARG_LINES_DEFAULT)
+ arg_lines = 10;
+
+ if (!!arg_directory + !!arg_file + !!arg_machine > 1) {
+ log_error("Please specify either -D/--directory= or --file= or -M/--machine=, not more than one.");
+ return -EINVAL;
+ }
+
+ if (arg_since_set && arg_until_set && arg_since > arg_until) {
+ log_error("--since= must be before --until=.");
+ return -EINVAL;
+ }
+
+ if (!!arg_cursor + !!arg_after_cursor + !!arg_since_set > 1) {
+ log_error("Please specify only one of --since=, --cursor=, and --after-cursor.");
+ return -EINVAL;
+ }
+
+ if (arg_follow && arg_reverse) {
+ log_error("Please specify either --reverse= or --follow=, not both.");
+ return -EINVAL;
+ }
+
+ if (!IN_SET(arg_action, ACTION_SHOW, ACTION_DUMP_CATALOG, ACTION_LIST_CATALOG) && optind < argc) {
+ log_error("Extraneous arguments starting with '%s'", argv[optind]);
+ return -EINVAL;
+ }
+
+ if ((arg_boot || arg_action == ACTION_LIST_BOOTS) && (arg_file || arg_directory || arg_merge)) {
+ log_error("Using --boot or --list-boots with --file, --directory or --merge is not supported.");
+ return -EINVAL;
+ }
+
+ if (!strv_isempty(arg_system_units) && (arg_journal_type == SD_JOURNAL_CURRENT_USER)) {
+
+ /* Specifying --user and --unit= at the same time makes no sense (as the former excludes the user
+ * journal, but the latter excludes the system journal, thus resulting in empty output). Let's be nice
+ * to users, and automatically turn --unit= into --user-unit= if combined with --user. */
+ r = strv_extend_strv(&arg_user_units, arg_system_units, true);
+ if (r < 0)
+ return -ENOMEM;
+
+ arg_system_units = strv_free(arg_system_units);
+ }
+
+ return 1;
+}
+
+static int generate_new_id128(void) {
+ sd_id128_t id;
+ int r;
+ unsigned i;
+
+ r = sd_id128_randomize(&id);
+ if (r < 0)
+ return log_error_errno(r, "Failed to generate ID: %m");
+
+ printf("As string:\n"
+ SD_ID128_FORMAT_STR "\n\n"
+ "As UUID:\n"
+ "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x\n\n"
+ "As macro:\n"
+ "#define MESSAGE_XYZ SD_ID128_MAKE(",
+ SD_ID128_FORMAT_VAL(id),
+ SD_ID128_FORMAT_VAL(id));
+ for (i = 0; i < 16; i++)
+ printf("%02x%s", id.bytes[i], i != 15 ? "," : "");
+ fputs(")\n\n", stdout);
+
+ printf("As Python constant:\n"
+ ">>> import uuid\n"
+ ">>> MESSAGE_XYZ = uuid.UUID('" SD_ID128_FORMAT_STR "')\n",
+ SD_ID128_FORMAT_VAL(id));
+
+ return 0;
+}
+
+static int add_matches(sd_journal *j, char **args) {
+ char **i;
+ bool have_term = false;
+
+ assert(j);
+
+ STRV_FOREACH(i, args) {
+ int r;
+
+ if (streq(*i, "+")) {
+ if (!have_term)
+ break;
+ r = sd_journal_add_disjunction(j);
+ have_term = false;
+
+ } else if (path_is_absolute(*i)) {
+ _cleanup_free_ char *p, *t = NULL, *t2 = NULL, *interpreter = NULL;
+ const char *path;
+ struct stat st;
+
+ p = canonicalize_file_name(*i);
+ path = p ?: *i;
+
+ if (lstat(path, &st) < 0)
+ return log_error_errno(errno, "Couldn't stat file: %m");
+
+ if (S_ISREG(st.st_mode) && (0111 & st.st_mode)) {
+ if (executable_is_script(path, &interpreter) > 0) {
+ _cleanup_free_ char *comm;
+
+ comm = strndup(basename(path), 15);
+ if (!comm)
+ return log_oom();
+
+ t = strappend("_COMM=", comm);
+ if (!t)
+ return log_oom();
+
+ /* Append _EXE only if the interpreter is not a link.
+ Otherwise, it might be outdated often. */
+ if (lstat(interpreter, &st) == 0 && !S_ISLNK(st.st_mode)) {
+ t2 = strappend("_EXE=", interpreter);
+ if (!t2)
+ return log_oom();
+ }
+ } else {
+ t = strappend("_EXE=", path);
+ if (!t)
+ return log_oom();
+ }
+
+ r = sd_journal_add_match(j, t, 0);
+
+ if (r >=0 && t2)
+ r = sd_journal_add_match(j, t2, 0);
+
+ } else if (S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode)) {
+ r = add_matches_for_device(j, path);
+ if (r < 0)
+ return r;
+ } else {
+ log_error("File is neither a device node, nor regular file, nor executable: %s", *i);
+ return -EINVAL;
+ }
+
+ have_term = true;
+ } else {
+ r = sd_journal_add_match(j, *i, 0);
+ have_term = true;
+ }
+
+ if (r < 0)
+ return log_error_errno(r, "Failed to add match '%s': %m", *i);
+ }
+
+ if (!strv_isempty(args) && !have_term) {
+ log_error("\"+\" can only be used between terms");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void boot_id_free_all(BootId *l) {
+
+ while (l) {
+ BootId *i = l;
+ LIST_REMOVE(boot_list, l, i);
+ free(i);
+ }
+}
+
+static int discover_next_boot(sd_journal *j,
+ sd_id128_t previous_boot_id,
+ bool advance_older,
+ BootId **ret) {
+
+ _cleanup_free_ BootId *next_boot = NULL;
+ char match[9+32+1] = "_BOOT_ID=";
+ sd_id128_t boot_id;
+ int r;
+
+ assert(j);
+ assert(ret);
+
+ /* We expect the journal to be on the last position of a boot
+ * (in relation to the direction we are going), so that the next
+ * invocation of sd_journal_next/previous will be from a different
+ * boot. We then collect any information we desire and then jump
+ * to the last location of the new boot by using a _BOOT_ID match
+ * coming from the other journal direction. */
+
+ /* Make sure we aren't restricted by any _BOOT_ID matches, so that
+ * we can actually advance to a *different* boot. */
+ sd_journal_flush_matches(j);
+
+ do {
+ if (advance_older)
+ r = sd_journal_previous(j);
+ else
+ r = sd_journal_next(j);
+ if (r < 0)
+ return r;
+ else if (r == 0)
+ return 0; /* End of journal, yay. */
+
+ r = sd_journal_get_monotonic_usec(j, NULL, &boot_id);
+ if (r < 0)
+ return r;
+
+ /* We iterate through this in a loop, until the boot ID differs from the previous one. Note that
+ * normally, this will only require a single iteration, as we seeked to the last entry of the previous
+ * boot entry already. However, it might happen that the per-journal-field entry arrays are less
+ * complete than the main entry array, and hence might reference an entry that's not actually the last
+ * one of the boot ID as last one. Let's hence use the per-field array is initial seek position to
+ * speed things up, but let's not trust that it is complete, and hence, manually advance as
+ * necessary. */
+
+ } while (sd_id128_equal(boot_id, previous_boot_id));
+
+ next_boot = new0(BootId, 1);
+ if (!next_boot)
+ return -ENOMEM;
+
+ next_boot->id = boot_id;
+
+ r = sd_journal_get_realtime_usec(j, &next_boot->first);
+ if (r < 0)
+ return r;
+
+ /* Now seek to the last occurrence of this boot ID. */
+ sd_id128_to_string(next_boot->id, match + 9);
+ r = sd_journal_add_match(j, match, sizeof(match) - 1);
+ if (r < 0)
+ return r;
+
+ if (advance_older)
+ r = sd_journal_seek_head(j);
+ else
+ r = sd_journal_seek_tail(j);
+ if (r < 0)
+ return r;
+
+ if (advance_older)
+ r = sd_journal_next(j);
+ else
+ r = sd_journal_previous(j);
+ if (r < 0)
+ return r;
+ else if (r == 0)
+ return -ENODATA; /* This shouldn't happen. We just came from this very boot ID. */
+
+ r = sd_journal_get_realtime_usec(j, &next_boot->last);
+ if (r < 0)
+ return r;
+
+ *ret = next_boot;
+ next_boot = NULL;
+
+ return 0;
+}
+
+static int get_boots(
+ sd_journal *j,
+ BootId **boots,
+ sd_id128_t *query_ref_boot,
+ int ref_boot_offset) {
+
+ bool skip_once;
+ int r, count = 0;
+ BootId *head = NULL, *tail = NULL;
+ const bool advance_older = query_ref_boot && ref_boot_offset <= 0;
+ sd_id128_t previous_boot_id;
+
+ assert(j);
+
+ /* Adjust for the asymmetry that offset 0 is
+ * the last (and current) boot, while 1 is considered the
+ * (chronological) first boot in the journal. */
+ skip_once = query_ref_boot && sd_id128_is_null(*query_ref_boot) && ref_boot_offset < 0;
+
+ /* Advance to the earliest/latest occurrence of our reference
+ * boot ID (taking our lookup direction into account), so that
+ * discover_next_boot() can do its job.
+ * If no reference is given, the journal head/tail will do,
+ * they're "virtual" boots after all. */
+ if (query_ref_boot && !sd_id128_is_null(*query_ref_boot)) {
+ char match[9+32+1] = "_BOOT_ID=";
+
+ sd_journal_flush_matches(j);
+
+ sd_id128_to_string(*query_ref_boot, match + 9);
+ r = sd_journal_add_match(j, match, sizeof(match) - 1);
+ if (r < 0)
+ return r;
+
+ if (advance_older)
+ r = sd_journal_seek_head(j); /* seek to oldest */
+ else
+ r = sd_journal_seek_tail(j); /* seek to newest */
+ if (r < 0)
+ return r;
+
+ if (advance_older)
+ r = sd_journal_next(j); /* read the oldest entry */
+ else
+ r = sd_journal_previous(j); /* read the most recently added entry */
+ if (r < 0)
+ return r;
+ else if (r == 0)
+ goto finish;
+ else if (ref_boot_offset == 0) {
+ count = 1;
+ goto finish;
+ }
+
+ /* At this point the read pointer is positioned at the oldest/newest occurence of the reference boot
+ * ID. After flushing the matches, one more invocation of _previous()/_next() will hence place us at
+ * the following entry, which must then have an older/newer boot ID */
+ } else {
+
+ if (advance_older)
+ r = sd_journal_seek_tail(j); /* seek to newest */
+ else
+ r = sd_journal_seek_head(j); /* seek to oldest */
+ if (r < 0)
+ return r;
+
+ /* No sd_journal_next()/_previous() here.
+ *
+ * At this point the read pointer is positioned after the newest/before the oldest entry in the whole
+ * journal. The next invocation of _previous()/_next() will hence position us at the newest/oldest
+ * entry we have. */
+ }
+
+ previous_boot_id = SD_ID128_NULL;
+ for (;;) {
+ _cleanup_free_ BootId *current = NULL;
+
+ r = discover_next_boot(j, previous_boot_id, advance_older, &current);
+ if (r < 0) {
+ boot_id_free_all(head);
+ return r;
+ }
+
+ if (!current)
+ break;
+
+ previous_boot_id = current->id;
+
+ if (query_ref_boot) {
+ if (!skip_once)
+ ref_boot_offset += advance_older ? 1 : -1;
+ skip_once = false;
+
+ if (ref_boot_offset == 0) {
+ count = 1;
+ *query_ref_boot = current->id;
+ break;
+ }
+ } else {
+ LIST_INSERT_AFTER(boot_list, head, tail, current);
+ tail = current;
+ current = NULL;
+ count++;
+ }
+ }
+
+finish:
+ if (boots)
+ *boots = head;
+
+ sd_journal_flush_matches(j);
+
+ return count;
+}
+
+static int list_boots(sd_journal *j) {
+ int w, i, count;
+ BootId *id, *all_ids;
+
+ assert(j);
+
+ count = get_boots(j, &all_ids, NULL, 0);
+ if (count < 0)
+ return log_error_errno(count, "Failed to determine boots: %m");
+ if (count == 0)
+ return count;
+
+ pager_open(arg_no_pager, arg_pager_end);
+
+ /* numbers are one less, but we need an extra char for the sign */
+ w = DECIMAL_STR_WIDTH(count - 1) + 1;
+
+ i = 0;
+ LIST_FOREACH(boot_list, id, all_ids) {
+ char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX];
+
+ printf("% *i " SD_ID128_FORMAT_STR " %s—%s\n",
+ w, i - count + 1,
+ SD_ID128_FORMAT_VAL(id->id),
+ format_timestamp_maybe_utc(a, sizeof(a), id->first),
+ format_timestamp_maybe_utc(b, sizeof(b), id->last));
+ i++;
+ }
+
+ boot_id_free_all(all_ids);
+
+ return 0;
+}
+
+static int add_boot(sd_journal *j) {
+ char match[9+32+1] = "_BOOT_ID=";
+ sd_id128_t ref_boot_id;
+ int r;
+
+ assert(j);
+
+ if (!arg_boot)
+ return 0;
+
+ if (arg_boot_offset == 0 && sd_id128_equal(arg_boot_id, SD_ID128_NULL))
+ return add_match_this_boot(j, arg_machine);
+
+ ref_boot_id = arg_boot_id;
+ r = get_boots(j, NULL, &ref_boot_id, arg_boot_offset);
+ assert(r <= 1);
+ if (r <= 0) {
+ const char *reason = (r == 0) ? "No such boot ID in journal" : strerror(-r);
+
+ if (sd_id128_is_null(arg_boot_id))
+ log_error("Data from the specified boot (%+i) is not available: %s",
+ arg_boot_offset, reason);
+ else
+ log_error("Data from the specified boot ("SD_ID128_FORMAT_STR") is not available: %s",
+ SD_ID128_FORMAT_VAL(arg_boot_id), reason);
+
+ return r == 0 ? -ENODATA : r;
+ }
+
+ sd_id128_to_string(ref_boot_id, match + 9);
+
+ r = sd_journal_add_match(j, match, sizeof(match) - 1);
+ 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;
+}
+
+static int add_dmesg(sd_journal *j) {
+ int r;
+ assert(j);
+
+ if (!arg_dmesg)
+ return 0;
+
+ r = sd_journal_add_match(j, "_TRANSPORT=kernel", strlen("_TRANSPORT=kernel"));
+ 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;
+}
+
+static int get_possible_units(
+ sd_journal *j,
+ const char *fields,
+ char **patterns,
+ Set **units) {
+
+ _cleanup_set_free_free_ Set *found;
+ const char *field;
+ int r;
+
+ found = set_new(&string_hash_ops);
+ if (!found)
+ return -ENOMEM;
+
+ NULSTR_FOREACH(field, fields) {
+ const void *data;
+ size_t size;
+
+ r = sd_journal_query_unique(j, field);
+ if (r < 0)
+ return r;
+
+ SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
+ char **pattern, *eq;
+ size_t prefix;
+ _cleanup_free_ char *u = NULL;
+
+ eq = memchr(data, '=', size);
+ if (eq)
+ prefix = eq - (char*) data + 1;
+ else
+ prefix = 0;
+
+ u = strndup((char*) data + prefix, size - prefix);
+ if (!u)
+ return -ENOMEM;
+
+ STRV_FOREACH(pattern, patterns)
+ if (fnmatch(*pattern, u, FNM_NOESCAPE) == 0) {
+ log_debug("Matched %s with pattern %s=%s", u, field, *pattern);
+
+ r = set_consume(found, u);
+ u = NULL;
+ if (r < 0 && r != -EEXIST)
+ return r;
+
+ break;
+ }
+ }
+ }
+
+ *units = found;
+ found = NULL;
+ return 0;
+}
+
+/* This list is supposed to return the superset of unit names
+ * possibly matched by rules added with add_matches_for_unit... */
+#define SYSTEM_UNITS \
+ "_SYSTEMD_UNIT\0" \
+ "COREDUMP_UNIT\0" \
+ "UNIT\0" \
+ "OBJECT_SYSTEMD_UNIT\0" \
+ "_SYSTEMD_SLICE\0"
+
+/* ... and add_matches_for_user_unit */
+#define USER_UNITS \
+ "_SYSTEMD_USER_UNIT\0" \
+ "USER_UNIT\0" \
+ "COREDUMP_USER_UNIT\0" \
+ "OBJECT_SYSTEMD_USER_UNIT\0"
+
+static int add_units(sd_journal *j) {
+ _cleanup_strv_free_ char **patterns = NULL;
+ int r, count = 0;
+ char **i;
+
+ assert(j);
+
+ STRV_FOREACH(i, arg_system_units) {
+ _cleanup_free_ char *u = NULL;
+
+ r = unit_name_mangle(*i, UNIT_NAME_GLOB, &u);
+ if (r < 0)
+ return r;
+
+ if (string_is_glob(u)) {
+ r = strv_push(&patterns, u);
+ if (r < 0)
+ return r;
+ u = NULL;
+ } else {
+ r = add_matches_for_unit(j, u);
+ if (r < 0)
+ return r;
+ r = sd_journal_add_disjunction(j);
+ if (r < 0)
+ return r;
+ count++;
+ }
+ }
+
+ if (!strv_isempty(patterns)) {
+ _cleanup_set_free_free_ Set *units = NULL;
+ Iterator it;
+ char *u;
+
+ r = get_possible_units(j, SYSTEM_UNITS, patterns, &units);
+ if (r < 0)
+ return r;
+
+ SET_FOREACH(u, units, it) {
+ r = add_matches_for_unit(j, u);
+ if (r < 0)
+ return r;
+ r = sd_journal_add_disjunction(j);
+ if (r < 0)
+ return r;
+ count++;
+ }
+ }
+
+ patterns = strv_free(patterns);
+
+ STRV_FOREACH(i, arg_user_units) {
+ _cleanup_free_ char *u = NULL;
+
+ r = unit_name_mangle(*i, UNIT_NAME_GLOB, &u);
+ if (r < 0)
+ return r;
+
+ if (string_is_glob(u)) {
+ r = strv_push(&patterns, u);
+ if (r < 0)
+ return r;
+ u = NULL;
+ } else {
+ r = add_matches_for_user_unit(j, u, getuid());
+ if (r < 0)
+ return r;
+ r = sd_journal_add_disjunction(j);
+ if (r < 0)
+ return r;
+ count++;
+ }
+ }
+
+ if (!strv_isempty(patterns)) {
+ _cleanup_set_free_free_ Set *units = NULL;
+ Iterator it;
+ char *u;
+
+ r = get_possible_units(j, USER_UNITS, patterns, &units);
+ if (r < 0)
+ return r;
+
+ SET_FOREACH(u, units, it) {
+ r = add_matches_for_user_unit(j, u, getuid());
+ if (r < 0)
+ return r;
+ r = sd_journal_add_disjunction(j);
+ if (r < 0)
+ return r;
+ count++;
+ }
+ }
+
+ /* Complain if the user request matches but nothing whatsoever was
+ * found, since otherwise everything would be matched. */
+ if (!(strv_isempty(arg_system_units) && strv_isempty(arg_user_units)) && count == 0)
+ return -ENODATA;
+
+ r = sd_journal_add_conjunction(j);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int add_priorities(sd_journal *j) {
+ char match[] = "PRIORITY=0";
+ int i, r;
+ assert(j);
+
+ if (arg_priorities == 0xFF)
+ return 0;
+
+ for (i = LOG_EMERG; i <= LOG_DEBUG; i++)
+ if (arg_priorities & (1 << i)) {
+ match[sizeof(match)-2] = '0' + i;
+
+ 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;
+}
+
+
+static int add_syslog_identifier(sd_journal *j) {
+ int r;
+ char **i;
+
+ assert(j);
+
+ STRV_FOREACH(i, arg_syslog_identifier) {
+ char *u;
+
+ u = strjoina("SYSLOG_IDENTIFIER=", *i);
+ r = sd_journal_add_match(j, u, 0);
+ if (r < 0)
+ return r;
+ r = sd_journal_add_disjunction(j);
+ if (r < 0)
+ return r;
+ }
+
+ r = sd_journal_add_conjunction(j);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+static int setup_keys(void) {
+#ifdef HAVE_GCRYPT
+ size_t mpk_size, seed_size, state_size, i;
+ uint8_t *mpk, *seed, *state;
+ int fd = -1, r;
+ sd_id128_t machine, boot;
+ char *p = NULL, *k = NULL;
+ struct FSSHeader h;
+ uint64_t n;
+ struct stat st;
+
+ r = stat("/var/log/journal", &st);
+ if (r < 0 && errno != ENOENT && errno != ENOTDIR)
+ return log_error_errno(errno, "stat(\"%s\") failed: %m", "/var/log/journal");
+
+ if (r < 0 || !S_ISDIR(st.st_mode)) {
+ log_error("%s is not a directory, must be using persistent logging for FSS.",
+ "/var/log/journal");
+ return r < 0 ? -errno : -ENOTDIR;
+ }
+
+ r = sd_id128_get_machine(&machine);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get machine ID: %m");
+
+ r = sd_id128_get_boot(&boot);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get boot ID: %m");
+
+ if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss",
+ SD_ID128_FORMAT_VAL(machine)) < 0)
+ return log_oom();
+
+ if (arg_force) {
+ r = unlink(p);
+ if (r < 0 && errno != ENOENT) {
+ r = log_error_errno(errno, "unlink(\"%s\") failed: %m", p);
+ goto finish;
+ }
+ } else if (access(p, F_OK) >= 0) {
+ log_error("Sealing key file %s exists already. Use --force to recreate.", p);
+ r = -EEXIST;
+ goto finish;
+ }
+
+ if (asprintf(&k, "/var/log/journal/" SD_ID128_FORMAT_STR "/fss.tmp.XXXXXX",
+ SD_ID128_FORMAT_VAL(machine)) < 0) {
+ r = log_oom();
+ goto finish;
+ }
+
+ mpk_size = FSPRG_mskinbytes(FSPRG_RECOMMENDED_SECPAR);
+ mpk = alloca(mpk_size);
+
+ seed_size = FSPRG_RECOMMENDED_SEEDLEN;
+ seed = alloca(seed_size);
+
+ state_size = FSPRG_stateinbytes(FSPRG_RECOMMENDED_SECPAR);
+ state = alloca(state_size);
+
+ fd = open("/dev/random", O_RDONLY|O_CLOEXEC|O_NOCTTY);
+ if (fd < 0) {
+ r = log_error_errno(errno, "Failed to open /dev/random: %m");
+ goto finish;
+ }
+
+ log_info("Generating seed...");
+ r = loop_read_exact(fd, seed, seed_size, true);
+ if (r < 0) {
+ log_error_errno(r, "Failed to read random seed: %m");
+ goto finish;
+ }
+
+ log_info("Generating key pair...");
+ FSPRG_GenMK(NULL, mpk, seed, seed_size, FSPRG_RECOMMENDED_SECPAR);
+
+ log_info("Generating sealing key...");
+ FSPRG_GenState0(state, mpk, seed, seed_size);
+
+ assert(arg_interval > 0);
+
+ n = now(CLOCK_REALTIME);
+ n /= arg_interval;
+
+ safe_close(fd);
+ fd = mkostemp_safe(k, O_WRONLY|O_CLOEXEC);
+ if (fd < 0) {
+ r = log_error_errno(fd, "Failed to open %s: %m", k);
+ goto finish;
+ }
+
+ /* Enable secure remove, exclusion from dump, synchronous
+ * writing and in-place updating */
+ r = chattr_fd(fd, FS_SECRM_FL|FS_NODUMP_FL|FS_SYNC_FL|FS_NOCOW_FL, FS_SECRM_FL|FS_NODUMP_FL|FS_SYNC_FL|FS_NOCOW_FL);
+ if (r < 0)
+ log_warning_errno(r, "Failed to set file attributes: %m");
+
+ zero(h);
+ memcpy(h.signature, "KSHHRHLP", 8);
+ h.machine_id = machine;
+ h.boot_id = boot;
+ h.header_size = htole64(sizeof(h));
+ h.start_usec = htole64(n * arg_interval);
+ h.interval_usec = htole64(arg_interval);
+ h.fsprg_secpar = htole16(FSPRG_RECOMMENDED_SECPAR);
+ h.fsprg_state_size = htole64(state_size);
+
+ r = loop_write(fd, &h, sizeof(h), false);
+ if (r < 0) {
+ log_error_errno(r, "Failed to write header: %m");
+ goto finish;
+ }
+
+ r = loop_write(fd, state, state_size, false);
+ if (r < 0) {
+ log_error_errno(r, "Failed to write state: %m");
+ goto finish;
+ }
+
+ if (link(k, p) < 0) {
+ r = log_error_errno(errno, "Failed to link file: %m");
+ goto finish;
+ }
+
+ if (on_tty()) {
+ fprintf(stderr,
+ "\n"
+ "The new key pair has been generated. The " ANSI_HIGHLIGHT "secret sealing key" ANSI_NORMAL " has been written to\n"
+ "the following local file. This key file is automatically updated when the\n"
+ "sealing key is advanced. It should not be used on multiple hosts.\n"
+ "\n"
+ "\t%s\n"
+ "\n"
+ "Please write down the following " ANSI_HIGHLIGHT "secret verification key" ANSI_NORMAL ". It should be stored\n"
+ "at a safe location and should not be saved locally on disk.\n"
+ "\n\t" ANSI_HIGHLIGHT_RED, p);
+ fflush(stderr);
+ }
+ for (i = 0; i < seed_size; i++) {
+ if (i > 0 && i % 3 == 0)
+ putchar('-');
+ printf("%02x", ((uint8_t*) seed)[i]);
+ }
+
+ printf("/%llx-%llx\n", (unsigned long long) n, (unsigned long long) arg_interval);
+
+ if (on_tty()) {
+ char tsb[FORMAT_TIMESPAN_MAX], *hn;
+
+ fprintf(stderr,
+ ANSI_NORMAL "\n"
+ "The sealing key is automatically changed every %s.\n",
+ format_timespan(tsb, sizeof(tsb), arg_interval, 0));
+
+ hn = gethostname_malloc();
+
+ if (hn) {
+ hostname_cleanup(hn);
+ fprintf(stderr, "\nThe keys have been generated for host %s/" SD_ID128_FORMAT_STR ".\n", hn, SD_ID128_FORMAT_VAL(machine));
+ } else
+ fprintf(stderr, "\nThe keys have been generated for host " SD_ID128_FORMAT_STR ".\n", SD_ID128_FORMAT_VAL(machine));
+
+#ifdef HAVE_QRENCODE
+ /* If this is not an UTF-8 system don't print any QR codes */
+ if (is_locale_utf8()) {
+ fputs("\nTo transfer the verification key to your phone please scan the QR code below:\n\n", stderr);
+ print_qr_code(stderr, seed, seed_size, n, arg_interval, hn, machine);
+ }
+#endif
+ free(hn);
+ }
+
+ r = 0;
+
+finish:
+ safe_close(fd);
+
+ if (k) {
+ unlink(k);
+ free(k);
+ }
+
+ free(p);
+
+ return r;
+#else
+ log_error("Forward-secure sealing not available.");
+ return -EOPNOTSUPP;
+#endif
+}
+
+static int verify(sd_journal *j) {
+ int r = 0;
+ Iterator i;
+ JournalFile *f;
+
+ assert(j);
+
+ log_show_color(true);
+
+ ORDERED_HASHMAP_FOREACH(f, j->files, i) {
+ int k;
+ usec_t first = 0, validated = 0, last = 0;
+
+#ifdef HAVE_GCRYPT
+ if (!arg_verify_key && JOURNAL_HEADER_SEALED(f->header))
+ log_notice("Journal file %s has sealing enabled but verification key has not been passed using --verify-key=.", f->path);
+#endif
+
+ k = journal_file_verify(f, arg_verify_key, &first, &validated, &last, true);
+ if (k == -EINVAL) {
+ /* If the key was invalid give up right-away. */
+ return k;
+ } else if (k < 0) {
+ log_warning_errno(k, "FAIL: %s (%m)", f->path);
+ r = k;
+ } else {
+ char a[FORMAT_TIMESTAMP_MAX], b[FORMAT_TIMESTAMP_MAX], c[FORMAT_TIMESPAN_MAX];
+ log_info("PASS: %s", f->path);
+
+ if (arg_verify_key && JOURNAL_HEADER_SEALED(f->header)) {
+ if (validated > 0) {
+ log_info("=> Validated from %s to %s, final %s entries not sealed.",
+ format_timestamp_maybe_utc(a, sizeof(a), first),
+ format_timestamp_maybe_utc(b, sizeof(b), validated),
+ format_timespan(c, sizeof(c), last > validated ? last - validated : 0, 0));
+ } else if (last > 0)
+ log_info("=> No sealing yet, %s of entries not sealed.",
+ format_timespan(c, sizeof(c), last - first, 0));
+ else
+ log_info("=> No sealing yet, no entries in file.");
+ }
+ }
+ }
+
+ return r;
+}
+
+static int access_check_var_log_journal(sd_journal *j) {
+#ifdef HAVE_ACL
+ _cleanup_strv_free_ char **g = NULL;
+ const char* dir;
+#endif
+ int r;
+
+ assert(j);
+
+ if (arg_quiet)
+ return 0;
+
+ /* If we are root, we should have access, don't warn. */
+ if (getuid() == 0)
+ return 0;
+
+ /* If we are in the 'systemd-journal' group, we should have
+ * access too. */
+ r = in_group("systemd-journal");
+ if (r < 0)
+ return log_error_errno(r, "Failed to check if we are in the 'systemd-journal' group: %m");
+ if (r > 0)
+ return 0;
+
+#ifdef HAVE_ACL
+ if (laccess("/run/log/journal", F_OK) >= 0)
+ dir = "/run/log/journal";
+ else
+ dir = "/var/log/journal";
+
+ /* If we are in any of the groups listed in the journal ACLs,
+ * then all is good, too. Let's enumerate all groups from the
+ * default ACL of the directory, which generally should allow
+ * access to most journal files too. */
+ r = acl_search_groups(dir, &g);
+ if (r < 0)
+ return log_error_errno(r, "Failed to search journal ACL: %m");
+ if (r > 0)
+ return 0;
+
+ /* Print a pretty list, if there were ACLs set. */
+ if (!strv_isempty(g)) {
+ _cleanup_free_ char *s = NULL;
+
+ /* Thre are groups in the ACL, let's list them */
+ r = strv_extend(&g, "systemd-journal");
+ if (r < 0)
+ return log_oom();
+
+ strv_sort(g);
+ strv_uniq(g);
+
+ s = strv_join(g, "', '");
+ if (!s)
+ return log_oom();
+
+ log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
+ " Users in groups '%s' can see all messages.\n"
+ " Pass -q to turn off this notice.", s);
+ return 1;
+ }
+#endif
+
+ /* If no ACLs were found, print a short version of the message. */
+ log_notice("Hint: You are currently not seeing messages from other users and the system.\n"
+ " Users in the 'systemd-journal' group can see all messages. Pass -q to\n"
+ " turn off this notice.");
+
+ return 1;
+}
+
+static int access_check(sd_journal *j) {
+ Iterator it;
+ void *code;
+ char *path;
+ int r = 0;
+
+ assert(j);
+
+ if (hashmap_isempty(j->errors)) {
+ if (ordered_hashmap_isempty(j->files))
+ log_notice("No journal files were found.");
+
+ return 0;
+ }
+
+ if (hashmap_contains(j->errors, INT_TO_PTR(-EACCES))) {
+ (void) access_check_var_log_journal(j);
+
+ if (ordered_hashmap_isempty(j->files))
+ r = log_error_errno(EACCES, "No journal files were opened due to insufficient permissions.");
+ }
+
+ HASHMAP_FOREACH_KEY(path, code, j->errors, it) {
+ int err;
+
+ err = abs(PTR_TO_INT(code));
+
+ switch (err) {
+ case EACCES:
+ continue;
+
+ case ENODATA:
+ log_warning_errno(err, "Journal file %s is truncated, ignoring file.", path);
+ break;
+
+ case EPROTONOSUPPORT:
+ log_warning_errno(err, "Journal file %s uses an unsupported feature, ignoring file.", path);
+ break;
+
+ case EBADMSG:
+ log_warning_errno(err, "Journal file %s corrupted, ignoring file.", path);
+ break;
+
+ default:
+ log_warning_errno(err, "An error was encountered while opening journal file or directory %s, ignoring file: %m", path);
+ break;
+ }
+ }
+
+ return r;
+}
+
+static int flush_to_var(void) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_close_ int watch_fd = -1;
+ int r;
+
+ if (arg_machine) {
+ log_error("--flush is not supported in conjunction with --machine=.");
+ return -EOPNOTSUPP;
+ }
+
+ /* Quick exit */
+ if (access("/run/systemd/journal/flushed", F_OK) >= 0)
+ return 0;
+
+ /* OK, let's actually do the full logic, send SIGUSR1 to the
+ * daemon and set up inotify to wait for the flushed file to appear */
+ r = bus_connect_system_systemd(&bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get D-Bus connection: %m");
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "KillUnit",
+ &error,
+ NULL,
+ "ssi", "systemd-journald.service", "main", SIGUSR1);
+ if (r < 0)
+ return log_error_errno(r, "Failed to kill journal service: %s", bus_error_message(&error, r));
+
+ mkdir_p("/run/systemd/journal", 0755);
+
+ watch_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
+ if (watch_fd < 0)
+ return log_error_errno(errno, "Failed to create inotify watch: %m");
+
+ r = inotify_add_watch(watch_fd, "/run/systemd/journal", IN_CREATE|IN_DONT_FOLLOW|IN_ONLYDIR);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to watch journal directory: %m");
+
+ for (;;) {
+ if (access("/run/systemd/journal/flushed", F_OK) >= 0)
+ break;
+
+ if (errno != ENOENT)
+ return log_error_errno(errno, "Failed to check for existence of /run/systemd/journal/flushed: %m");
+
+ r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY);
+ if (r < 0)
+ return log_error_errno(r, "Failed to wait for event: %m");
+
+ r = flush_fd(watch_fd);
+ if (r < 0)
+ return log_error_errno(r, "Failed to flush inotify events: %m");
+ }
+
+ return 0;
+}
+
+static int send_signal_and_wait(int sig, const char *watch_path) {
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ _cleanup_close_ int watch_fd = -1;
+ usec_t start;
+ int r;
+
+ if (arg_machine) {
+ log_error("--sync and --rotate are not supported in conjunction with --machine=.");
+ return -EOPNOTSUPP;
+ }
+
+ start = now(CLOCK_MONOTONIC);
+
+ /* This call sends the specified signal to journald, and waits
+ * for acknowledgment by watching the mtime of the specified
+ * flag file. This is used to trigger syncing or rotation and
+ * then wait for the operation to complete. */
+
+ for (;;) {
+ usec_t tstamp;
+
+ /* See if a sync happened by now. */
+ r = read_timestamp_file(watch_path, &tstamp);
+ if (r < 0 && r != -ENOENT)
+ return log_error_errno(errno, "Failed to read %s: %m", watch_path);
+ if (r >= 0 && tstamp >= start)
+ return 0;
+
+ /* Let's ask for a sync, but only once. */
+ if (!bus) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+
+ r = bus_connect_system_systemd(&bus);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get D-Bus connection: %m");
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "KillUnit",
+ &error,
+ NULL,
+ "ssi", "systemd-journald.service", "main", sig);
+ if (r < 0)
+ return log_error_errno(r, "Failed to kill journal service: %s", bus_error_message(&error, r));
+
+ continue;
+ }
+
+ /* Let's install the inotify watch, if we didn't do that yet. */
+ if (watch_fd < 0) {
+
+ mkdir_p("/run/systemd/journal", 0755);
+
+ watch_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
+ if (watch_fd < 0)
+ return log_error_errno(errno, "Failed to create inotify watch: %m");
+
+ r = inotify_add_watch(watch_fd, "/run/systemd/journal", IN_MOVED_TO|IN_DONT_FOLLOW|IN_ONLYDIR);
+ if (r < 0)
+ return log_error_errno(errno, "Failed to watch journal directory: %m");
+
+ /* Recheck the flag file immediately, so that we don't miss any event since the last check. */
+ continue;
+ }
+
+ /* OK, all preparatory steps done, let's wait until
+ * inotify reports an event. */
+
+ r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY);
+ if (r < 0)
+ return log_error_errno(r, "Failed to wait for event: %m");
+
+ r = flush_fd(watch_fd);
+ if (r < 0)
+ return log_error_errno(r, "Failed to flush inotify events: %m");
+ }
+
+ return 0;
+}
+
+static int rotate(void) {
+ return send_signal_and_wait(SIGUSR2, "/run/systemd/journal/rotated");
+}
+
+static int sync_journal(void) {
+ return send_signal_and_wait(SIGRTMIN+1, "/run/systemd/journal/synced");
+}
+
+int main(int argc, char *argv[]) {
+ int r;
+ _cleanup_(sd_journal_closep) sd_journal *j = NULL;
+ bool need_seek = false;
+ sd_id128_t previous_boot_id;
+ bool previous_boot_id_valid = false, first_line = true;
+ int n_shown = 0;
+ bool ellipsized = false;
+
+ setlocale(LC_ALL, "");
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ signal(SIGWINCH, columns_lines_cache_reset);
+ sigbus_install();
+
+ /* Increase max number of open files to 16K if we can, we
+ * might needs this when browsing journal files, which might
+ * be split up into many files. */
+ setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(16384));
+
+ switch (arg_action) {
+
+ case ACTION_NEW_ID128:
+ r = generate_new_id128();
+ goto finish;
+
+ case ACTION_SETUP_KEYS:
+ r = setup_keys();
+ goto finish;
+
+ case ACTION_LIST_CATALOG:
+ case ACTION_DUMP_CATALOG:
+ case ACTION_UPDATE_CATALOG: {
+ _cleanup_free_ char *database;
+
+ database = path_join(arg_root, CATALOG_DATABASE, NULL);
+ if (!database) {
+ r = log_oom();
+ goto finish;
+ }
+
+ if (arg_action == ACTION_UPDATE_CATALOG) {
+ r = catalog_update(database, arg_root, catalog_file_dirs);
+ if (r < 0)
+ log_error_errno(r, "Failed to list catalog: %m");
+ } else {
+ bool oneline = arg_action == ACTION_LIST_CATALOG;
+
+ pager_open(arg_no_pager, arg_pager_end);
+
+ if (optind < argc)
+ r = catalog_list_items(stdout, database, oneline, argv + optind);
+ else
+ r = catalog_list(stdout, database, oneline);
+ if (r < 0)
+ log_error_errno(r, "Failed to list catalog: %m");
+ }
+
+ goto finish;
+ }
+
+ case ACTION_FLUSH:
+ r = flush_to_var();
+ goto finish;
+
+ case ACTION_SYNC:
+ r = sync_journal();
+ goto finish;
+
+ case ACTION_ROTATE:
+ r = rotate();
+ goto finish;
+
+ case ACTION_SHOW:
+ case ACTION_PRINT_HEADER:
+ case ACTION_VERIFY:
+ case ACTION_DISK_USAGE:
+ case ACTION_LIST_BOOTS:
+ case ACTION_VACUUM:
+ case ACTION_LIST_FIELDS:
+ case ACTION_LIST_FIELD_NAMES:
+ /* These ones require access to the journal files, continue below. */
+ break;
+
+ default:
+ assert_not_reached("Unknown action");
+ }
+
+ if (arg_directory)
+ r = sd_journal_open_directory(&j, arg_directory, arg_journal_type);
+ else if (arg_file_stdin) {
+ int ifd = STDIN_FILENO;
+ r = sd_journal_open_files_fd(&j, &ifd, 1, 0);
+ } else if (arg_file)
+ r = sd_journal_open_files(&j, (const char**) arg_file, 0);
+ else if (arg_machine) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+ int fd;
+
+ if (geteuid() != 0) {
+ /* The file descriptor returned by OpenMachineRootDirectory() will be owned by users/groups of
+ * the container, thus we need root privileges to override them. */
+ log_error("Using the --machine= switch requires root privileges.");
+ r = -EPERM;
+ goto finish;
+ }
+
+ r = sd_bus_open_system(&bus);
+ if (r < 0) {
+ log_error_errno(r, "Failed to open system bus: %m");
+ goto finish;
+ }
+
+ r = sd_bus_call_method(
+ bus,
+ "org.freedesktop.machine1",
+ "/org/freedesktop/machine1",
+ "org.freedesktop.machine1.Manager",
+ "OpenMachineRootDirectory",
+ &error,
+ &reply,
+ "s", arg_machine);
+ if (r < 0) {
+ log_error_errno(r, "Failed to open root directory: %s", bus_error_message(&error, r));
+ goto finish;
+ }
+
+ r = sd_bus_message_read(reply, "h", &fd);
+ if (r < 0) {
+ bus_log_parse_error(r);
+ goto finish;
+ }
+
+ fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
+ if (fd < 0) {
+ r = log_error_errno(errno, "Failed to duplicate file descriptor: %m");
+ goto finish;
+ }
+
+ r = sd_journal_open_directory_fd(&j, fd, SD_JOURNAL_OS_ROOT);
+ if (r < 0)
+ safe_close(fd);
+ } else
+ r = sd_journal_open(&j, !arg_merge*SD_JOURNAL_LOCAL_ONLY + arg_journal_type);
+ if (r < 0) {
+ log_error_errno(r, "Failed to open %s: %m", arg_directory ?: arg_file ? "files" : "journal");
+ goto finish;
+ }
+
+ r = access_check(j);
+ if (r < 0)
+ goto finish;
+
+ switch (arg_action) {
+
+ case ACTION_NEW_ID128:
+ case ACTION_SETUP_KEYS:
+ case ACTION_LIST_CATALOG:
+ case ACTION_DUMP_CATALOG:
+ case ACTION_UPDATE_CATALOG:
+ case ACTION_FLUSH:
+ case ACTION_SYNC:
+ case ACTION_ROTATE:
+ assert_not_reached("Unexpected action.");
+
+ case ACTION_PRINT_HEADER:
+ journal_print_header(j);
+ r = 0;
+ goto finish;
+
+ case ACTION_VERIFY:
+ r = verify(j);
+ goto finish;
+
+ case ACTION_DISK_USAGE: {
+ uint64_t bytes = 0;
+ char sbytes[FORMAT_BYTES_MAX];
+
+ r = sd_journal_get_usage(j, &bytes);
+ if (r < 0)
+ goto finish;
+
+ printf("Archived and active journals take up %s on disk.\n",
+ format_bytes(sbytes, sizeof(sbytes), bytes));
+ goto finish;
+ }
+
+ case ACTION_LIST_BOOTS:
+ r = list_boots(j);
+ goto finish;
+
+ case ACTION_VACUUM: {
+ Directory *d;
+ Iterator i;
+
+ HASHMAP_FOREACH(d, j->directories_by_path, i) {
+ int q;
+
+ if (d->is_root)
+ continue;
+
+ q = journal_directory_vacuum(d->path, arg_vacuum_size, arg_vacuum_n_files, arg_vacuum_time, NULL, true);
+ if (q < 0) {
+ log_error_errno(q, "Failed to vacuum %s: %m", d->path);
+ r = q;
+ }
+ }
+
+ goto finish;
+ }
+
+ case ACTION_LIST_FIELD_NAMES: {
+ const char *field;
+
+ SD_JOURNAL_FOREACH_FIELD(j, field) {
+ printf("%s\n", field);
+ n_shown++;
+ }
+
+ r = 0;
+ goto finish;
+ }
+
+ case ACTION_SHOW:
+ case ACTION_LIST_FIELDS:
+ break;
+
+ default:
+ assert_not_reached("Unknown action");
+ }
+
+ if (arg_boot_offset != 0 &&
+ sd_journal_has_runtime_files(j) > 0 &&
+ sd_journal_has_persistent_files(j) == 0) {
+ log_info("Specifying boot ID has no effect, no persistent journal was found");
+ r = 0;
+ goto finish;
+ }
+ /* add_boot() must be called first!
+ * It may need to seek the journal to find parent boot IDs. */
+ r = add_boot(j);
+ if (r < 0)
+ goto finish;
+
+ r = add_dmesg(j);
+ if (r < 0)
+ goto finish;
+
+ r = add_units(j);
+ if (r < 0) {
+ log_error_errno(r, "Failed to add filter for units: %m");
+ goto finish;
+ }
+
+ r = add_syslog_identifier(j);
+ if (r < 0) {
+ log_error_errno(r, "Failed to add filter for syslog identifiers: %m");
+ goto finish;
+ }
+
+ r = add_priorities(j);
+ if (r < 0)
+ goto finish;
+
+ r = add_matches(j, argv + optind);
+ if (r < 0)
+ goto finish;
+
+ 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);
+ }
+
+ if (arg_action == ACTION_LIST_FIELDS) {
+ const void *data;
+ size_t size;
+
+ assert(arg_field);
+
+ r = sd_journal_set_data_threshold(j, 0);
+ if (r < 0) {
+ log_error_errno(r, "Failed to unset data size threshold: %m");
+ goto finish;
+ }
+
+ r = sd_journal_query_unique(j, arg_field);
+ if (r < 0) {
+ log_error_errno(r, "Failed to query unique data objects: %m");
+ goto finish;
+ }
+
+ SD_JOURNAL_FOREACH_UNIQUE(j, data, size) {
+ const void *eq;
+
+ if (arg_lines >= 0 && n_shown >= arg_lines)
+ break;
+
+ eq = memchr(data, '=', size);
+ if (eq)
+ printf("%.*s\n", (int) (size - ((const uint8_t*) eq - (const uint8_t*) data + 1)), (const char*) eq + 1);
+ else
+ printf("%.*s\n", (int) size, (const char*) data);
+
+ n_shown++;
+ }
+
+ r = 0;
+ goto finish;
+ }
+
+ /* Opening the fd now means the first sd_journal_wait() will actually wait */
+ if (arg_follow) {
+ r = sd_journal_get_fd(j);
+ if (r == -EMEDIUMTYPE) {
+ log_error_errno(r, "The --follow switch is not supported in conjunction with reading from STDIN.");
+ goto finish;
+ }
+ if (r < 0) {
+ log_error_errno(r, "Failed to get journal fd: %m");
+ goto finish;
+ }
+ }
+
+ if (arg_cursor || arg_after_cursor) {
+ r = sd_journal_seek_cursor(j, arg_cursor ?: arg_after_cursor);
+ if (r < 0) {
+ log_error_errno(r, "Failed to seek to cursor: %m");
+ goto finish;
+ }
+
+ if (!arg_reverse)
+ r = sd_journal_next_skip(j, 1 + !!arg_after_cursor);
+ else
+ r = sd_journal_previous_skip(j, 1 + !!arg_after_cursor);
+
+ if (arg_after_cursor && r < 2) {
+ /* We couldn't find the next entry after the cursor. */
+ if (arg_follow)
+ need_seek = true;
+ else
+ arg_lines = 0;
+ }
+
+ } else if (arg_since_set && !arg_reverse) {
+ r = sd_journal_seek_realtime_usec(j, arg_since);
+ if (r < 0) {
+ log_error_errno(r, "Failed to seek to date: %m");
+ goto finish;
+ }
+ r = sd_journal_next(j);
+
+ } else if (arg_until_set && arg_reverse) {
+ r = sd_journal_seek_realtime_usec(j, arg_until);
+ if (r < 0) {
+ log_error_errno(r, "Failed to seek to date: %m");
+ goto finish;
+ }
+ r = sd_journal_previous(j);
+
+ } else if (arg_lines >= 0) {
+ r = sd_journal_seek_tail(j);
+ if (r < 0) {
+ log_error_errno(r, "Failed to seek to tail: %m");
+ goto finish;
+ }
+
+ r = sd_journal_previous_skip(j, arg_lines);
+
+ } else if (arg_reverse) {
+ r = sd_journal_seek_tail(j);
+ if (r < 0) {
+ log_error_errno(r, "Failed to seek to tail: %m");
+ goto finish;
+ }
+
+ r = sd_journal_previous(j);
+
+ } else {
+ r = sd_journal_seek_head(j);
+ if (r < 0) {
+ log_error_errno(r, "Failed to seek to head: %m");
+ goto finish;
+ }
+
+ r = sd_journal_next(j);
+ }
+
+ if (r < 0) {
+ log_error_errno(r, "Failed to iterate through journal: %m");
+ goto finish;
+ }
+ if (r == 0) {
+ if (arg_follow)
+ need_seek = true;
+ else {
+ if (!arg_quiet)
+ printf("-- No entries --\n");
+ goto finish;
+ }
+ }
+
+ if (!arg_follow)
+ pager_open(arg_no_pager, arg_pager_end);
+
+ if (!arg_quiet) {
+ usec_t start, end;
+ char start_buf[FORMAT_TIMESTAMP_MAX], end_buf[FORMAT_TIMESTAMP_MAX];
+
+ r = sd_journal_get_cutoff_realtime_usec(j, &start, &end);
+ if (r < 0) {
+ log_error_errno(r, "Failed to get cutoff: %m");
+ goto finish;
+ }
+
+ if (r > 0) {
+ if (arg_follow)
+ printf("-- Logs begin at %s. --\n",
+ format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start));
+ else
+ printf("-- Logs begin at %s, end at %s. --\n",
+ format_timestamp_maybe_utc(start_buf, sizeof(start_buf), start),
+ format_timestamp_maybe_utc(end_buf, sizeof(end_buf), end));
+ }
+ }
+
+ for (;;) {
+ while (arg_lines < 0 || n_shown < arg_lines || (arg_follow && !first_line)) {
+ int flags;
+
+ if (need_seek) {
+ if (!arg_reverse)
+ r = sd_journal_next(j);
+ else
+ r = sd_journal_previous(j);
+ if (r < 0) {
+ log_error_errno(r, "Failed to iterate through journal: %m");
+ goto finish;
+ }
+ if (r == 0)
+ break;
+ }
+
+ if (arg_until_set && !arg_reverse) {
+ usec_t usec;
+
+ r = sd_journal_get_realtime_usec(j, &usec);
+ if (r < 0) {
+ log_error_errno(r, "Failed to determine timestamp: %m");
+ goto finish;
+ }
+ if (usec > arg_until)
+ goto finish;
+ }
+
+ if (arg_since_set && arg_reverse) {
+ usec_t usec;
+
+ r = sd_journal_get_realtime_usec(j, &usec);
+ if (r < 0) {
+ log_error_errno(r, "Failed to determine timestamp: %m");
+ goto finish;
+ }
+ if (usec < arg_since)
+ goto finish;
+ }
+
+ if (!arg_merge && !arg_quiet) {
+ sd_id128_t boot_id;
+
+ r = sd_journal_get_monotonic_usec(j, NULL, &boot_id);
+ if (r >= 0) {
+ if (previous_boot_id_valid &&
+ !sd_id128_equal(boot_id, previous_boot_id))
+ printf("%s-- Reboot --%s\n",
+ ansi_highlight(), ansi_normal());
+
+ previous_boot_id = boot_id;
+ previous_boot_id_valid = true;
+ }
+ }
+
+ flags =
+ arg_all * OUTPUT_SHOW_ALL |
+ arg_full * OUTPUT_FULL_WIDTH |
+ colors_enabled() * OUTPUT_COLOR |
+ arg_catalog * OUTPUT_CATALOG |
+ arg_utc * OUTPUT_UTC |
+ arg_no_hostname * OUTPUT_NO_HOSTNAME;
+
+ r = output_journal(stdout, j, arg_output, 0, flags, &ellipsized);
+ need_seek = true;
+ if (r == -EADDRNOTAVAIL)
+ break;
+ else if (r < 0 || ferror(stdout))
+ goto finish;
+
+ n_shown++;
+ }
+
+ if (!arg_follow) {
+ if (arg_show_cursor) {
+ _cleanup_free_ char *cursor = NULL;
+
+ r = sd_journal_get_cursor(j, &cursor);
+ if (r < 0 && r != -EADDRNOTAVAIL)
+ log_error_errno(r, "Failed to get cursor: %m");
+ else if (r >= 0)
+ printf("-- cursor: %s\n", cursor);
+ }
+
+ break;
+ }
+
+ r = sd_journal_wait(j, (uint64_t) -1);
+ if (r < 0) {
+ log_error_errno(r, "Couldn't wait for journal event: %m");
+ goto finish;
+ }
+
+ first_line = false;
+ }
+
+finish:
+ pager_close();
+
+ strv_free(arg_file);
+
+ strv_free(arg_syslog_identifier);
+ strv_free(arg_system_units);
+ strv_free(arg_user_units);
+
+ free(arg_root);
+
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-03 12:21:10 +0000