journald-server.c revision b374689c02c681671a3c3c0b0fd3add32386b442
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek This file is part of systemd.
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek Copyright 2011 Lennart Poettering
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek systemd is free software; you can redistribute it and/or modify it
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek under the terms of the GNU Lesser General Public License as published by
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek the Free Software Foundation; either version 2.1 of the License, or
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (at your option) any later version.
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek systemd is distributed in the hope that it will be useful, but
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek WITHOUT ANY WARRANTY; without even the implied warranty of
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek Lesser General Public License for more details.
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek You should have received a copy of the GNU Lesser General Public License
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek along with systemd; If not, see <http://www.gnu.org/licenses/>.
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek#include "journal-authenticate.h"
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering#define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE)
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering#define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC)
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering#define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering#define RECHECK_SPACE_USEC (30*USEC_PER_SEC)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (!verbose && s->cached_space_timestamp + RECHECK_SPACE_USEC > ts) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek *available = s->cached_space_available;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek p = strjoina(path, SERVER_MACHINE_ID(s));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, "Failed to open %s: %m", p);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (fstatvfs(dirfd(d), &ss) < 0)
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering return log_error_errno(errno, "Failed to fstatvfs(%s): %m", p);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek FOREACH_DIRENT_ALL(de, d, break) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (!endswith(de->d_name, ".journal") &&
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek !endswith(de->d_name, ".journal~"))
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_debug_errno(errno, "Failed to stat %s/%s, ignoring: %m", p, de->d_name);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sum += (uint64_t) st.st_blocks * 512UL;
348ced909724a1331b85d57aede80a102a00e428Zbigniew Jędrzejewski-Szmek /* If request, then let's bump the min_use limit to the
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering * current usage on disk. We do this when starting up and
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering * first opening the journal files. This way sudden spikes in
348ced909724a1331b85d57aede80a102a00e428Zbigniew Jędrzejewski-Szmek * disk usage will not cause journald to vacuum files without
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering * bounds. Note that this means that only a restart of
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering * journald will make it reset this value. */
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek metrics->min_use = MAX(metrics->min_use, sum);
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek avail = LESS_BY(ss_avail, metrics->keep_free);
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering s->cached_space_limit = MIN(MAX(sum + avail, metrics->min_use), metrics->max_use);
da2e288bbc4d8cebaa1d38a80f6eec8cde3e9cceLennart Poettering s->cached_space_available = LESS_BY(s->cached_space_limit, sum);
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX],
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX], fb6[FORMAT_BYTES_MAX];
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE,
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering "%s (%s) is currently using %s.\n"
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering "Maximum allowed usage is set to %s.\n"
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering "Leaving at least %s free (of currently available %s of space).\n"
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering "Enforced usage limit is thus %s, of which %s are still available.",
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering format_bytes(fb2, sizeof(fb2), metrics->max_use),
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering format_bytes(fb3, sizeof(fb3), metrics->keep_free),
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering format_bytes(fb4, sizeof(fb4), ss_avail),
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering format_bytes(fb5, sizeof(fb5), s->cached_space_limit),
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering format_bytes(fb6, sizeof(fb6), s->cached_space_available));
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poetteringstatic int determine_space(Server *s, bool verbose, bool patch_min_use, uint64_t *available, uint64_t *limit) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return determine_space_for(s, metrics, path, name, verbose, patch_min_use, available, limit);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekvoid server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(errno, "Failed to fix access mode on %s, ignoring: %m", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = acl_find_uid(acl, uid, &entry);
23ad4dd8844c582929115a11ed2830a1371568d6Jan Alexander Steffens (heftig) if (acl_create_entry(&acl, &entry) < 0 ||
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek acl_set_tag_type(entry, ACL_USER) < 0 ||
23ad4dd8844c582929115a11ed2830a1371568d6Jan Alexander Steffens (heftig) acl_set_qualifier(entry, &uid) < 0) {
23ad4dd8844c582929115a11ed2830a1371568d6Jan Alexander Steffens (heftig) log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* We do not recalculate the mask unconditionally here,
56f64d95763a799ba4475daf44d8e9f72a1bd474Michal Schmidt * so that the fchmod() mask above stays intact. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (acl_get_permset(entry, &permset) < 0 ||
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek acl_add_perm(permset, ACL_READ) < 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = calc_acl_mask_if_needed(&acl);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(r, "Failed to patch ACL on %s, ignoring: %m", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic JournalFile* find_journal(Server *s, uid_t uid) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* We split up user logs only on /var, not on /run. If the
43cf8388ea4ffed1801468d4b650d6e48eefce9eMichal Schmidt * runtime file is open, we write to it exclusively, in order
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * to guarantee proper order as soon as we flush /run to
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * /var and close the runtime file. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek f = ordered_hashmap_get(s->user_journals, UINT32_TO_PTR(uid));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal",
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek SD_ID128_FORMAT_VAL(machine), uid) < 0)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* Too many open? Then let's close one */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek f = ordered_hashmap_steal_first(s->user_journals);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f);
ea69bd41c5923f4f278a09bb7d8cb1abcfa122e1Lennart Poettering r = ordered_hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_rotate(f, s->compress, seal);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error_errno(r, "Failed to rotate %s: %m", (*f)->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error_errno(r, "Failed to create new %s journal: %m", name);
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk (void) do_rotate(s, &s->runtime_journal, "runtime", false, 0);
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk (void) do_rotate(s, &s->system_journal, "system", s->seal, 0);
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k));
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk ordered_hashmap_replace(s->user_journals, k, f);
65089b82401cd395786a7987c470056ff3f01151Lennart Poettering /* Old file has been closed and deallocated */
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk ordered_hashmap_remove(s->user_journals, k);
da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt r = journal_file_set_offline(s->system_journal);
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk log_warning_errno(r, "Failed to sync system journal, ignoring: %m");
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
ea69bd41c5923f4f278a09bb7d8cb1abcfa122e1Lennart Poettering log_warning_errno(r, "Failed to sync user journal, ignoring: %m");
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF);
ea69bd41c5923f4f278a09bb7d8cb1abcfa122e1Lennart Poettering log_error_errno(r, "Failed to disable sync timer source: %m");
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering const char *p;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek p = strjoina(path, SERVER_MACHINE_ID(s));
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering (void) determine_space_for(s, metrics, path, name, verbose, patch_min_use, NULL, &limit);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_directory_vacuum(p, limit, metrics->n_max_files, s->max_retention_usec, &s->oldest_file_usec, verbose);
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering if (r < 0 && r != -ENOENT)
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering log_warning_errno(r, "Failed to vacuum %s, ignoring: %m", p);
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poetteringint server_vacuum(Server *s, bool verbose, bool patch_min_use) {
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering do_vacuum(s, s->system_journal, &s->system_metrics, "/var/log/journal/", "System journal", verbose, patch_min_use);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering do_vacuum(s, s->runtime_journal, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", verbose, patch_min_use);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poetteringstatic void server_cache_machine_id(Server *s) {
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID="));
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poetteringstatic void server_cache_boot_id(Server *s) {
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID="));
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poetteringstatic void server_cache_hostname(Server *s) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic bool shall_try_append_again(JournalFile *f, int r) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* -E2BIG Hit configured limit
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek -EFBIG Hit fs limit
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek -EDQUOT Quota limit hit
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek -ENOSPC Disk full
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek -EIO I/O error of some kind (mmap)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek -EHOSTDOWN Other machine
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek -EBUSY Unclean shutdown
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek -EPROTONOSUPPORT Unsupported feature
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek -EBADMSG Corrupted
fa6ac76083b8ffc1309876459f54f9f0e2843731Lennart Poettering -ENODATA Truncated
fa6ac76083b8ffc1309876459f54f9f0e2843731Lennart Poettering -ESHUTDOWN Already archived
2678031a179a9b91fc799f8ef951a548c66c4b49Lennart Poettering -EIDRM Journal file has been deleted */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_debug("%s: Allocation limit reached, rotating.", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_info("%s: Journal file from other machine, rotating.", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_info("%s: Unclean shutdown, rotating.", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_info("%s: Unsupported feature, rotating.", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("%s: Journal file corrupted, rotating.", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("%s: IO error, rotating.", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("%s: Journal file has been deleted, rotating.", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (journal_file_rotate_suggested(f, s->max_file_usec)) {
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek server_schedule_sync(s, priority);
8266e1c04db8cabe3c68510a0c1f07c09ecdb2e8Lennart Poettering if (vacuumed || !shall_try_append_again(f, r)) {
8266e1c04db8cabe3c68510a0c1f07c09ecdb2e8Lennart Poettering log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n));
d07f7b9ef2835c290d6beadebd17d15308608eeaLennart Poettering r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n));
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek struct iovec *iovec, unsigned n, unsigned m,
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek const char *label, size_t label_len,
82499507b369fea3033a74c22813bf423301aef4Lennart Poettering char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)],
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)],
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)],
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)],
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)],
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)],
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)],
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)];
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek uid_t realuid = 0, owner = 0, journal_uid;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)],
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)],
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)],
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)];
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sprintf(pid, "_PID="PID_FMT, ucred->pid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], pid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sprintf(uid, "_UID="UID_FMT, ucred->uid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek sprintf(gid, "_GID="GID_FMT, ucred->gid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], gid);
3a83211689bdf4ab617a4fb79e11980c50918123Shawn Landden if (r >= 0) {
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
0a20e3c10761378869af7bbef2733e3ae879d0f1Holger Hans Peter Freyther r = get_process_cmdline(ucred->pid, 0, false, &t);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = get_process_capeff(ucred->pid, &t);
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek x = strjoina("_CAP_EFFECTIVE=", t);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
7027ff61a34a12487712b382a061c654acc3a679Lennart Poettering r = audit_session_from_pid(ucred->pid, &audit);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering IOVEC_SET_STRING(iovec[n++], audit_session);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering r = audit_loginuid_from_pid(ucred->pid, &loginuid);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering IOVEC_SET_STRING(iovec[n++], audit_loginuid);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek x = strjoina("_SYSTEMD_CGROUP=", c);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering session = strjoina("_SYSTEMD_SESSION=", t);
19cace379f3f680d3201cd257ab3ca6708b2d45dLennart Poettering if (cg_path_get_owner_uid(c, &owner) >= 0) {
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering if (cg_path_get_unit(c, &t) >= 0) {
0a244b8ecb6dfcb381fe831dc2aa9bacb2c12975Lennart Poettering if (cg_path_get_user_unit(c, &t) >= 0) {
ef1673d16907726d83bdff2e57b5261997a85020Mirco Tischler x = strjoina("_SYSTEMD_USER_UNIT=", unit_id);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
d682b3a7e7c7c2941a4d3e193f1e330dbc9fae89Lennart Poettering if (cg_path_get_slice(c, &t) >= 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0;
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek if (getpidcon(ucred->pid, &con) >= 0) {
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek x = strjoina("_SELINUX_CONTEXT=", con);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering r = get_process_uid(object_pid, &object_uid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], o_uid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = get_process_gid(object_pid, &object_gid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], o_gid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = get_process_comm(object_pid, &t);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = get_process_exe(object_pid, &t);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = get_process_cmdline(object_pid, 0, false, &t);
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek x = strjoina("OBJECT_CMDLINE=", t);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = audit_session_from_pid(object_pid, &audit);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], o_audit_session);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering r = audit_loginuid_from_pid(object_pid, &loginuid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], o_audit_loginuid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek x = strjoina("OBJECT_SYSTEMD_CGROUP=", c);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
19cace379f3f680d3201cd257ab3ca6708b2d45dLennart Poettering x = strjoina("OBJECT_SYSTEMD_SESSION=", t);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek if (cg_path_get_owner_uid(c, &owner) >= 0) {
19cace379f3f680d3201cd257ab3ca6708b2d45dLennart Poettering sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], o_owner_uid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek if (cg_path_get_unit(c, &t) >= 0) {
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek x = strjoina("OBJECT_SYSTEMD_UNIT=", t);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (cg_path_get_user_unit(c, &t) >= 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek x = strjoina("OBJECT_SYSTEMD_USER_UNIT=", t);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], x);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], source_time);
da4993920cdf5527b8528f0a483b54ab3cbc1971Kay Sievers /* Note that strictly speaking storing the boot id here is
40adcda869bda55f44b57fd3a2bd71d006dfb51bLennart Poettering * redundant since the entry includes this in-line
759c945a43577d56e85a927f15e7d9aaa94a4e4aColin Walters * anyway. However, we need this indexed, too. */
edc3797f7cd9e37c24e5241cac3263e7c918f732Lennart Poettering IOVEC_SET_STRING(iovec[n++], s->boot_id_field);
edc3797f7cd9e37c24e5241cac3263e7c918f732Lennart Poettering IOVEC_SET_STRING(iovec[n++], s->machine_id_field);
da4993920cdf5527b8528f0a483b54ab3cbc1971Kay Sievers IOVEC_SET_STRING(iovec[n++], s->hostname_field);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (s->split_mode == SPLIT_UID && realuid > 0)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* Split up strictly by any UID */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* Split up by login UIDs. We do this only if the
b6fa25552e538eca207072e12d223e3523b21a19Evgeny Vereshchagin * realuid is not root, in order not to accidentally
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * leak privileged information to the user that is
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * logged by a privileged process that is part of an
b92bea5d2a9481de69bb627a7b442a9f58fca43dZbigniew Jędrzejewski-Szmek * unprivileged session. */
b6fa25552e538eca207072e12d223e3523b21a19Evgeny Vereshchagin write_to_journal(s, journal_uid, iovec, n, priority);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekvoid server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek struct iovec iovec[N_IOVEC_META_FIELDS + 6];
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], "SYSLOG_FACILITY=3");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], "SYSLOG_IDENTIFIER=systemd-journald");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], "PRIORITY=6");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], buffer);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (!sd_id128_equal(message_id, SD_ID128_NULL)) {
3b3154df7e2773332bb814e167187367a0ccae4aLennart Poettering snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id));
7fd1b19bc9e9f5574f2877936b8ac267c7706947Harald Hoyer dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek struct iovec *iovec, unsigned n, unsigned m,
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek const char *label, size_t label_len,
2f5df74a5ec135ab2baebf26af6f088e5b4b8205Holger Hans Peter Freyther _cleanup_free_ char *path = NULL;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (LOG_PRI(priority) > s->max_level_store)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* Stop early in case the information will not be stored
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * in a journal. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* example: /user/lennart/3/foobar
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering * So let's cut of everything past the third /, since that is
db91ea32aa223d1b087d99811226a9c59a1bb281Zbigniew Jędrzejewski-Szmek * where user directories start */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (void) determine_space(s, false, false, &available, NULL);
caa2f4c0c9613b2e02aafa308c8fb092576014a9Zbigniew Jędrzejewski-Szmek rl = journal_rate_limit_test(s->rate_limit, path, priority & LOG_PRIMASK, available);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* Write a suppression message if we suppressed something */
caa2f4c0c9613b2e02aafa308c8fb092576014a9Zbigniew Jędrzejewski-Szmek server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED,
caa2f4c0c9613b2e02aafa308c8fb092576014a9Zbigniew Jędrzejewski-Szmek "Suppressed %u messages from %s", rl - 1, path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic int system_journal_open(Server *s, bool flush_requested) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) &&
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering || access("/run/systemd/journal/flushed", F_OK) >= 0)) {
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering /* If in auto mode: first try to create the machine
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * path, but not the prefix.
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering * If in persistent mode: create /var/log/journal and
433dd100442e8197868def975c6fd38b48dc6439Lukas Nykryn * the machine path */
e40ec7aec5e64cd0cfa5fc556d6a9747229b5794Zbigniew Jędrzejewski-Szmek if (s->storage == STORAGE_PERSISTENT)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek fn = strjoina("/var/log/journal/", SERVER_MACHINE_ID(s));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek fn = strjoina(fn, "/system.journal");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek server_fix_perms(s, s->system_journal, 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (void) determine_space_for(s, &s->system_metrics, "/var/log/journal/", "System journal", true, true, NULL, NULL);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek } else if (r < 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (r != -ENOENT && r != -EROFS)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(r, "Failed to open system journal: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek fn = strjoina("/run/log/journal/", SERVER_MACHINE_ID(s), "/system.journal");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* Try to open the runtime journal, but only
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * if it already exists, so that we can flush
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * it into the system journal */
fc1d70af2101e16c9e6f3c5bfd5ab315ee9e6daeLennart Poettering r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(r, "Failed to open runtime journal: %m");
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering /* OK, we really need the runtime journal, so create
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering * it if necessary. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (void) mkdir("/run/log/journal", 0755);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(r, "Failed to open runtime journal: %m");
fbb634117d0b0ebd5b105e65b141e75ae9af7f8fLennart Poettering server_fix_perms(s, s->runtime_journal, 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (void) determine_space_for(s, &s->runtime_metrics, "/run/log/journal/", "Runtime journal", true, true, NULL, NULL);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekint server_flush_to_var(Server *s) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_debug("Flushing to /var...");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_id128_get_machine(&machine);
fbb634117d0b0ebd5b105e65b141e75ae9af7f8fLennart Poettering r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(r, "Failed to read runtime journal: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sd_journal_set_data_threshold(j, 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek assert(f && f->current_offset > 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o);
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering log_error_errno(r, "Can't read entry: %m");
253f59dff9c93ee1d2c33444b5715e42bc1c6889Lennart Poettering r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (!shall_try_append_again(s->system_journal, r)) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error_errno(r, "Can't write entry: %m");
804ae586d475d77946debb22c1bc9ee049d4750cLennart Poettering log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful.");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error_errno(r, "Can't write entry: %m");
8531ae707d4d0203e83304d4af948b8169a5fce1Lennart Poettering journal_file_post_change(s->system_journal);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering s->runtime_journal = journal_file_close(s->runtime_journal);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering (void) rm_rf("/run/log/journal", REMOVE_ROOT);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering server_driver_message(s, SD_ID128_NULL, "Time spent on flushing to /var is %s for %u entries.", format_timespan(ts, sizeof(ts), now(CLOCK_MONOTONIC) - start, 0), n);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poetteringint server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering /* We use NAME_MAX space for the SELinux label
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering * here. The kernel currently enforces no
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering * limit, but according to suggestions from
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering * the SELinux people this will change and it
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering * will probably be identical to NAME_MAX. For
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering * now we use that, but this should be updated
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering * one day when the final limit is known. */
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek CMSG_SPACE(NAME_MAX)]; /* selinux label */
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering /* Try to get the right size, if we can. (Not all
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * sockets support SIOCINQ, hence we just try, but
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering * don't rely on it. */
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m))
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering return log_error_errno(errno, "recvmsg() failed: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred)))
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek else if (cmsg->cmsg_level == SOL_SOCKET &&
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering label_len = cmsg->cmsg_len - CMSG_LEN(0);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering } else if (cmsg->cmsg_level == SOL_SOCKET &&
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval)))
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering else if (cmsg->cmsg_level == SOL_SOCKET &&
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering /* And a trailing NUL, just in case */
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering if (n > 0 && n_fds == 0)
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering log_warning("Got file descriptors via syslog socket. Ignoring.");
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering if (n > 0 && n_fds == 0)
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len);
a315ac4e076c4ce7ce3e5c95792cf916d5e918c5Lennart Poettering server_process_native_file(s, fds[0], ucred, tv, label, label_len);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("Got too many file descriptors via native socket. Ignoring.");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (n > 0 && n_fds == 0)
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_warning("Got file descriptors via audit socket. Ignoring.");
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poetteringstatic int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid);
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering server_vacuum(s, false, false);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering (void) touch("/run/systemd/journal/flushed");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
6203e07a83214a55bb1f88508fcda2005c601deaLennart Poettering log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic int setup_signals(Server *s) {
151b9b9662a90455262ce575a8a8ae74bf4ff336Lennart Poettering assert(sigprocmask_many(SIG_SETMASK, NULL, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1) >= 0);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s);
74df0fca09b3c31ed19e14ba80f996fdff772417Lennart Poettering r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s);
da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt /* Let's process SIGTERM late, so that we flush all queued
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * messages to disk before we exit */
b5884878a2874447b2a9f07f324a7cd909d96d48Lennart Poettering r = sd_event_source_set_priority(s->sigterm_event_source, SD_EVENT_PRIORITY_NORMAL+20);
7fd1b19bc9e9f5574f2877936b8ac267c7706947Harald Hoyer /* When journald is invoked on the terminal (when debugging),
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * it's useful if C-c is handled equivalent to SIGTERM. */
d581d9d91fa5c42ce7828a7d0b1334d370cf1670Susant Sahani r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s);
d581d9d91fa5c42ce7828a7d0b1334d370cf1670Susant Sahani r = sd_event_source_set_priority(s->sigint_event_source, SD_EVENT_PRIORITY_NORMAL+20);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic int server_parse_proc_cmdline(Server *s) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek _cleanup_free_ char *line = NULL;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m");
40b71e89bae4e51768db4dc50ec64c1e9c96eec4Sebastian Thorarensen r = extract_first_word(&p, &word, NULL, 0);
40b71e89bae4e51768db4dc50ec64c1e9c96eec4Sebastian Thorarensen return log_error_errno(r, "Failed to parse journald syntax \"%s\": %m", line);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (startswith(word, "systemd.journald.forward_to_syslog=")) {
db91ea32aa223d1b087d99811226a9c59a1bb281Zbigniew Jędrzejewski-Szmek log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) {
a9edaeff8481573764288ccf7e433a95b6dc7c03Josh Triplett log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33);
a9edaeff8481573764288ccf7e433a95b6dc7c03Josh Triplett } else if (startswith(word, "systemd.journald.forward_to_console=")) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36);
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk } else if (startswith(word, "systemd.journald.forward_to_wall=")) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33);
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk } else if (startswith(word, "systemd.journald"))
d07f7b9ef2835c290d6beadebd17d15308608eeaLennart Poettering log_warning("Invalid systemd.journald parameter. Ignoring.");
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk /* do not warn about state here, since probably systemd already did */
d07f7b9ef2835c290d6beadebd17d15308608eeaLennart Poetteringstatic int server_parse_config_file(Server *s) {
d07f7b9ef2835c290d6beadebd17d15308608eeaLennart Poettering return config_parse_many(PKGSYSCONFDIR "/journald.conf",
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk CONF_PATHS_NULSTR("systemd/journald.conf.d"),
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk config_item_perf_lookup, journald_gperf_lookup,
6a0f1f6d5af7c7300d3db7a0ba2b068f8abd222bLennart Poetteringstatic int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) {
6a0f1f6d5af7c7300d3db7a0ba2b068f8abd222bLennart Poetteringint server_schedule_sync(Server *s, int priority) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk r = sd_event_now(s->event, CLOCK_MONOTONIC, &when);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering r = sd_event_source_set_time(s->sync_event_source, when);
4a62c710b62a5a3c7a8a278b810b9d5b5a0c8f4fMichal Schmidt r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT);
28def94cc8fd4394b20e2155d7130166662343c4Dave Reisnerstatic int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poetteringstatic int server_open_hostname(Server *s) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering /* kernels prior to 3.2 don't support polling this file. Ignore
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * the failure. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning_errno(r, "Failed to register hostname fd in event loop, ignoring: %m");
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk s->hostname_fd = safe_close(s->hostname_fd);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(r, "Failed to register hostname fd in event loop: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10);
e150e82097211f09b911c7784a89ef9efed713caMichał Bartoszkiewicz return log_error_errno(r, "Failed to adjust priority of host name event source: %m");
40b71e89bae4e51768db4dc50ec64c1e9c96eec4Sebastian Thorarensenstatic int dispatch_notify_event(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek assert(s->notify_event_source == es);
b1389b0d0805392570085acc7cb10eafcf885405Zbigniew Jędrzejewski-Szmek log_error("Invalid events on notify file descriptor.");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* The $NOTIFY_SOCKET is writable again, now send exactly one
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering * message on it. Either it's the wtachdog event, the initial
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * READY=1 event or an stdout stream event. If there's nothing
43cf8388ea4ffed1801468d4b650d6e48eefce9eMichal Schmidt * to write anymore, turn our event source off. The next time
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * there's something to send it will be turned on again. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek static const char p[] =
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek "STATUS=Processing requests...";
23bbb0de4e3f85d9704a5c12a5afa2dfa0159e41Michal Schmidt l = send(s->notify_fd, p, strlen(p), MSG_DONTWAIT);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(errno, "Failed to send READY=1 notification message: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_debug("Sent READY=1 notification.");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek static const char p[] =
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek l = send(s->notify_fd, p, strlen(p), MSG_DONTWAIT);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(errno, "Failed to send WATCHDOG=1 notification message: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_debug("Sent WATCHDOG=1 notification.");
03ee5c38cb0da193dd08733fb4c0c2809cee6a99Lennart Poettering } else if (s->stdout_streams_notify_queue)
03ee5c38cb0da193dd08733fb4c0c2809cee6a99Lennart Poettering /* Dispatch one stream notification event */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek stdout_stream_send_notify(s->stdout_streams_notify_queue);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* Leave us enabled if there's still more to to do. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (s->send_watchdog || s->stdout_streams_notify_queue)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* There was nothing to do anymore, let's turn ourselves off. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_event_source_set_enabled(es, SD_EVENT_OFF);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering return log_error_errno(r, "Failed to turn off notify event source: %m");
875c2e220e2611165e09051c4747971811f1de58Lennart Poetteringstatic int dispatch_watchdog(sd_event_source *es, uint64_t usec, void *userdata) {
13790add4bf648fed816361794d8277a75253410Lennart Poettering r = sd_event_source_set_enabled(s->notify_event_source, SD_EVENT_ON);
4ec3cd7391e119b597375c547cf4ed50fce9f115Lennart Poettering log_warning_errno(r, "Failed to turn on notify event source: %m");
13790add4bf648fed816361794d8277a75253410Lennart Poettering r = sd_event_source_set_time(s->watchdog_event_source, usec + s->watchdog_usec / 2);
4ec3cd7391e119b597375c547cf4ed50fce9f115Lennart Poettering return log_error_errno(r, "Failed to restart watchdog event source: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ON);
15d91bff36c61d38df8edff258d1702a017a0e66Zbigniew Jędrzejewski-Szmek return log_error_errno(r, "Failed to enable watchdog event source: %m");
13790add4bf648fed816361794d8277a75253410Lennart Poetteringstatic int server_connect_notify(Server *s) {
15d91bff36c61d38df8edff258d1702a017a0e66Zbigniew Jędrzejewski-Szmek assert(!s->notify_event_source);
13790add4bf648fed816361794d8277a75253410Lennart Poettering So here's the problem: we'd like to send notification
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek messages to PID 1, but we cannot do that via sd_notify(),
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek since that's synchronous, and we might end up blocking on
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek it. Specifically: given that PID 1 might block on
37b7affefde5443680d73642a990ce86776e28afZbigniew Jędrzejewski-Szmek dbus-daemon during IPC, and dbus-daemon is logging to us,
13790add4bf648fed816361794d8277a75253410Lennart Poettering and might hence block on us, we might end up in a deadlock
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if we block on sending PID 1 notification messages -- by
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek generating a full blocking circle. To avoid this, let's
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek create a non-blocking socket, and connect it to the
37b7affefde5443680d73642a990ce86776e28afZbigniew Jędrzejewski-Szmek notification socket, and then wait for POLLOUT before we
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek send anything. This should efficiently avoid any deadlocks,
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek as we'll never block on PID 1, hence PID 1 can safely block
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek on dbus-daemon which can safely block on us again.
7d18d348da26fdbb392c76b0f5edb7f06282afbbZbigniew Jędrzejewski-Szmek Don't think that this issue is real? It is, see:
7d18d348da26fdbb392c76b0f5edb7f06282afbbZbigniew Jędrzejewski-Szmek https://github.com/systemd/systemd/issues/1505
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if ((e[0] != '@' && e[0] != '/') || e[1] == 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("NOTIFY_SOCKET set to an invalid value: %s", e);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering if (strlen(e) > sizeof(sa.un.sun_path)) {
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_error("NOTIFY_SOCKET path too long: %s", e);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->notify_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(errno, "Failed to create notify socket: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (void) fd_inc_sndbuf(s->notify_fd, NOTIFY_SNDBUF_SIZE);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek strncpy(sa.un.sun_path, e, sizeof(sa.un.sun_path));
e9174f29c7e3ee45137537b126458718913a3ec5Lennart Poettering r = connect(s->notify_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(e));
e9174f29c7e3ee45137537b126458718913a3ec5Lennart Poettering return log_error_errno(errno, "Failed to connect to notify socket: %m");
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering r = sd_event_add_io(s->event, &s->notify_event_source, s->notify_fd, EPOLLOUT, dispatch_notify_event, s);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering return log_error_errno(r, "Failed to watch notification socket: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (sd_watchdog_enabled(false, &s->watchdog_usec) > 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_event_add_time(s->event, &s->watchdog_event_source, CLOCK_MONOTONIC, now(CLOCK_MONOTONIC) + s->watchdog_usec/2, s->watchdog_usec*3/4, dispatch_watchdog, s);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(r, "Failed to add watchdog time event: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* This should fire pretty soon, which we'll use to send the
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * READY=1 event. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek _cleanup_fdset_free_ FDSet *fds = NULL;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = s->notify_fd = -1;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->watchdog_usec = USEC_INFINITY;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC;
43cf8388ea4ffed1801468d4b650d6e48eefce9eMichal Schmidt s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST;
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering s->max_file_usec = DEFAULT_MAX_FILE_USEC;
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering journal_reset_metrics(&s->system_metrics);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering journal_reset_metrics(&s->runtime_metrics);
03e334a1c7dc8c20c38902aa039440763acc9b17Lennart Poettering if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) {
03e334a1c7dc8c20c38902aa039440763acc9b17Lennart Poettering log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0",
03e334a1c7dc8c20c38902aa039440763acc9b17Lennart Poettering s->rate_limit_interval, s->rate_limit_burst);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering s->rate_limit_interval = s->rate_limit_burst = 0;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (void) mkdir_p("/run/systemd/journal", 0755);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->user_journals = ordered_hashmap_new(NULL);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_event_default(&s->event);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return log_error_errno(r, "Failed to create event loop: %m");
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering return log_error_errno(n, "Failed to read listening file descriptors from environment: %m");
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) {
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering log_error("Too many native sockets passed.");
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) {
8580d1f73db36e9383e674e388b4fb55828c0c66Lennart Poettering log_error("Too many stdout sockets passed.");
if (s->syslog_fd >= 0) {
return -EINVAL;
if (s->audit_fd >= 0) {
return -EINVAL;
if (!fds) {
if (!fds)
return log_oom();
return log_oom();
/* systemd-journald.socket: /run/systemd/journal/stdout */
r = server_open_stdout_socket(s);
/* systemd-journald-dev-log.socket: /run/systemd/journal/dev-log */
r = server_open_syslog_socket(s);
/* systemd-journald.socket: /run/systemd/journal/socket */
r = server_open_native_socket(s);
r = server_open_dev_kmsg(s);
r = server_open_audit(s);
r = server_open_kernel_seqnum(s);
r = server_open_hostname(s);
r = setup_signals(s);
if (!s->udev)
return -ENOMEM;
if (!s->rate_limit)
return -ENOMEM;
(void) server_connect_notify(s);
return system_journal_open(s, false);
#ifdef HAVE_GCRYPT
JournalFile *f;
Iterator i;
usec_t n;
if (s->system_journal)
JournalFile *f;
assert(s);
while (s->stdout_streams)
if (s->system_journal)
if (s->runtime_journal)
if (s->rate_limit)
if (s->kernel_seqnum)
if (s->mmap)
DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting");
DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting");