journald-server.c revision ca2670162464b98f44d3f30a1d8b47b02609784c
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"
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek#define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek#define DEFAULT_RATE_LIMIT_INTERVAL (10*USEC_PER_SEC)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek#define DEFAULT_RATE_LIMIT_BURST 200
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek#define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic const char* const storage_table[] = {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek [STORAGE_VOLATILE] = "volatile",
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek [STORAGE_PERSISTENT] = "persistent",
2c5859afecee81e345fc9526b1083bf79990ffb8Daniel MackDEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting");
2c5859afecee81e345fc9526b1083bf79990ffb8Daniel Mackstatic const char* const split_mode_table[] = {
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-SzmekDEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode);
db91ea32aa223d1b087d99811226a9c59a1bb281Zbigniew Jędrzejewski-SzmekDEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic uint64_t available_space(Server *s) {
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek uint64_t sum = 0, avail = 0, ss_avail = 0;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek _cleanup_closedir_ DIR *d = NULL;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek return s->cached_available_space;
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_id128_get_machine(&machine);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek p = strappend(f, sd_id128_to_string(machine, ids));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (fstatvfs(dirfd(d), &ss) < 0)
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 sum += (uint64_t) st.st_blocks * 512UL;
348ced909724a1331b85d57aede80a102a00e428Zbigniew Jędrzejewski-Szmek avail = sum >= m->max_use ? 0 : m->max_use - sum;
348ced909724a1331b85d57aede80a102a00e428Zbigniew Jędrzejewski-Szmek ss_avail = ss.f_bsize * ss.f_bavail;
348ced909724a1331b85d57aede80a102a00e428Zbigniew Jędrzejewski-Szmek ss_avail = ss_avail < m->keep_free ? 0 : ss_avail - m->keep_free;
348ced909724a1331b85d57aede80a102a00e428Zbigniew Jędrzejewski-Szmek s->cached_available_space = avail;
348ced909724a1331b85d57aede80a102a00e428Zbigniew Jędrzejewski-Szmek s->cached_available_space_timestamp = ts;
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmekstatic void server_read_file_gid(Server *s) {
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek const char *g = "systemd-journal";
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek r = get_group_creds(&g, &s->file_gid);
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek log_warning("Failed to resolve '%s' group: %s", g, strerror(-r));
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek /* if we couldn't read the gid, then it will be 0, but that's
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * fine and we shouldn't try to resolve the group again, so
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * let's just pretend it worked right-away. */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekvoid server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
34c10968cbe3b5591b3c0ce225b8694edd9709d0Lennart Poettering r = fchmod_and_fchown(f->fd, 0640, 0, s->file_gid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("Failed to fix access mode/rights on %s, ignoring: %s", f->path, strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("Failed to read ACL on %s, ignoring: %m", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = acl_find_uid(acl, uid, &entry);
56f64d95763a799ba4475daf44d8e9f72a1bd474Michal Schmidt if (r <= 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (acl_create_entry(&acl, &entry) < 0 ||
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek acl_set_tag_type(entry, ACL_USER) < 0 ||
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek acl_set_qualifier(entry, &uid) < 0) {
23ad4dd8844c582929115a11ed2830a1371568d6Jan Alexander Steffens (heftig) log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
56f64d95763a799ba4475daf44d8e9f72a1bd474Michal Schmidt /* We do not recalculate the mask here, 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("Failed to patch ACL on %s, ignoring: %m", f->path);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("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
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * 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 r = sd_id128_get_machine(&machine);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek f = hashmap_get(s->user_journals, UINT32_TO_PTR(uid));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-%lu.journal",
43cf8388ea4ffed1801468d4b650d6e48eefce9eMichal Schmidt SD_ID128_FORMAT_VAL(machine), (unsigned long) uid) < 0)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek while (hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* Too many open? Then let's close one */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek f = 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, s->system_journal, &f);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f);
fc55baee9964a118afbddbf82b8e667a0ad80b99Zbigniew Jędrzejewski-Szmek r = journal_file_rotate(&s->runtime_journal, s->compress, false);
fc55baee9964a118afbddbf82b8e667a0ad80b99Zbigniew Jędrzejewski-Szmek log_error("Failed to rotate %s: %s", s->runtime_journal->path, strerror(-r));
fc55baee9964a118afbddbf82b8e667a0ad80b99Zbigniew Jędrzejewski-Szmek log_error("Failed to create new runtime journal: %s", strerror(-r));
2678031a179a9b91fc799f8ef951a548c66c4b49Lennart Poettering server_fix_perms(s, s->runtime_journal, 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_rotate(&s->system_journal, s->compress, s->seal);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Failed to rotate %s: %s", s->system_journal->path, strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Failed to create new system journal: %s", strerror(-r));
fc55baee9964a118afbddbf82b8e667a0ad80b99Zbigniew Jędrzejewski-Szmek server_fix_perms(s, s->system_journal, 0);
43cf8388ea4ffed1801468d4b650d6e48eefce9eMichal Schmidt HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
fc55baee9964a118afbddbf82b8e667a0ad80b99Zbigniew Jędrzejewski-Szmek r = journal_file_rotate(&f, s->compress, s->seal);
fc55baee9964a118afbddbf82b8e667a0ad80b99Zbigniew Jędrzejewski-Szmek log_error("Failed to rotate %s: %s", f->path, strerror(-r));
43cf8388ea4ffed1801468d4b650d6e48eefce9eMichal Schmidt log_error("Failed to create user journal: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek hashmap_replace(s->user_journals, k, f);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek server_fix_perms(s, f, PTR_TO_UINT32(k));
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk static const struct itimerspec sync_timer_disable = {};
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk r = journal_file_set_offline(s->system_journal);
da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt log_error("Failed to sync system journal: %s", strerror(-r));
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt log_error("Failed to sync user journal: %s", strerror(-r));
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk r = timerfd_settime(s->sync_timer_fd, 0, &sync_timer_disable, NULL);
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk log_error("Failed to disable max timer: %m");
da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt log_error("Failed to get machine ID: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sd_id128_to_string(machine, ids);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek p = strappend("/var/log/journal/", ids);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_directory_vacuum(p, s->system_metrics.max_use, s->system_metrics.keep_free, s->max_retention_usec, &s->oldest_file_usec);
da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt if (r < 0 && r != -ENOENT)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Failed to vacuum %s: %s", p, strerror(-r));
63c8666b824e8762ffb73647e1caee165dfbc868Zbigniew Jędrzejewski-Szmek p = strappend("/run/log/journal/", ids);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering r = journal_directory_vacuum(p, s->runtime_metrics.max_use, s->runtime_metrics.keep_free, s->max_retention_usec, &s->oldest_file_usec);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering if (r < 0 && r != -ENOENT)
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_error("Failed to vacuum %s: %s", p, strerror(-r));
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poetteringbool shall_try_append_again(JournalFile *f, int r) {
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering /* -E2BIG Hit configured limit
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -EFBIG Hit fs limit
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -EDQUOT Quota limit hit
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -ENOSPC Disk full
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -EHOSTDOWN Other machine
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -EBUSY Unclean shutdown
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -EPROTONOSUPPORT Unsupported feature
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -EBADMSG Corrupted
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -ENODATA Truncated
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering -ESHUTDOWN Already archived */
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC)
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_debug("%s: Allocation limit reached, rotating.", f->path);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering else if (r == -EHOSTDOWN)
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_info("%s: Journal file from other machine, rotating.", f->path);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering else if (r == -EBUSY)
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_info("%s: Unclean shutdown, rotating.", f->path);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_info("%s: Unsupported feature, rotating.", f->path);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN)
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_warning("%s: Journal file corrupted, rotating.", f->path);
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poetteringstatic void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (journal_file_rotate_suggested(f, s->max_file_usec)) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek 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);
fa6ac76083b8ffc1309876459f54f9f0e2843731Lennart Poettering if (vacuumed || !shall_try_append_again(f, r)) {
fa6ac76083b8ffc1309876459f54f9f0e2843731Lennart Poettering log_error("Failed to write entry, ignoring: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Failed to write entry, ignoring: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic void dispatch_message_real(
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek struct iovec *iovec, unsigned n, unsigned m,
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek const char *label, size_t label_len,
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)],
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)],
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)],
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)],
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)],
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek boot_id[sizeof("_BOOT_ID=") + 32] = "_BOOT_ID=",
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek machine_id[sizeof("_MACHINE_ID=") + 32] = "_MACHINE_ID=";
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek char *comm, *exe, *cmdline, *cgroup, *session, *unit, *hostname;
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)],
8266e1c04db8cabe3c68510a0c1f07c09ecdb2e8Lennart Poettering audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)];
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek assert(n + N_IOVEC_META_FIELDS <= m);
8266e1c04db8cabe3c68510a0c1f07c09ecdb2e8Lennart Poettering sprintf(pid, "_PID=%lu", (unsigned long) ucred->pid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sprintf(uid, "_UID=%lu", (unsigned long) ucred->uid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], uid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sprintf(gid, "_GID=%lu", (unsigned long) ucred->gid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], gid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], comm);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], exe);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = get_process_cmdline(ucred->pid, 0, false, &t);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek cmdline = strappenda("_CMDLINE=", t);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = audit_session_from_pid(ucred->pid, &audit);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek sprintf(audit_session, "_AUDIT_SESSION=%lu", (unsigned long) audit);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], audit_session);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering r = audit_loginuid_from_pid(ucred->pid, &loginuid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sprintf(audit_loginuid, "_AUDIT_LOGINUID=%lu", (unsigned long) loginuid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], audit_loginuid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = cg_pid_get_path_shifted(ucred->pid, NULL, &c);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek cgroup = strappenda("_SYSTEMD_CGROUP=", c);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], cgroup);
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek session = strappenda("_SYSTEMD_SESSION=", t);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], session);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (cg_path_get_owner_uid(c, &owner) >= 0) {
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering sprintf(owner_uid, "_SYSTEMD_OWNER_UID=%lu", (unsigned long) owner);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], owner_uid);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (cg_path_get_unit(c, &t) >= 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek unit = strappenda("_SYSTEMD_UNIT=", t);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering } else if (cg_path_get_user_unit(c, &t) >= 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek unit = strappenda("_SYSTEMD_USER_UNIT=", t);
9bdbc2e2ec523dbefe1c1c7e164b5544aff0b185Lukas Nykryn unit = strappenda("_SYSTEMD_USER_UNIT=", unit_id);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering unit = strappenda("_SYSTEMD_UNIT=", unit_id);
0a20e3c10761378869af7bbef2733e3ae879d0f1Holger Hans Peter Freyther char *selinux_context = alloca(sizeof("_SELINUX_CONTEXT=") + label_len);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering *((char*) mempcpy(stpcpy(selinux_context, "_SELINUX_CONTEXT="), label, label_len)) = 0;
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], selinux_context);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (getpidcon(ucred->pid, &con) >= 0) {
7027ff61a34a12487712b382a061c654acc3a679Lennart Poettering char *selinux_context = strappenda("_SELINUX_CONTEXT=", con);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], selinux_context);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv));
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], source_time);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering /* Note that strictly speaking storing the boot id here is
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering * redundant since the entry includes this in-line
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering * anyway. However, we need this indexed, too. */
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering sd_id128_to_string(id, boot_id + sizeof("_BOOT_ID=") - 1);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering sd_id128_to_string(id, machine_id + sizeof("_MACHINE_ID=") - 1);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], machine_id);
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering if (s->split_mode == SPLIT_UID && realuid > 0)
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek /* Split up strictly by any UID */
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0)
19cace379f3f680d3201cd257ab3ca6708b2d45dLennart Poettering /* Split up by login UIDs, this avoids creation of
19cace379f3f680d3201cd257ab3ca6708b2d45dLennart Poettering * individual journals for system UIDs. We do this
ae018d9bc900d6355dea4af05119b49c67945184Lennart Poettering * only if the realuid is not root, in order not to
0a244b8ecb6dfcb381fe831dc2aa9bacb2c12975Lennart Poettering * accidentally leak privileged information to the
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering * user that is logged by a privileged process that is
0a244b8ecb6dfcb381fe831dc2aa9bacb2c12975Lennart Poettering * part of an unprivileged session.*/
ef1673d16907726d83bdff2e57b5261997a85020Mirco Tischlervoid server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) {
6baa7db00812437bbc87e73faa1a11b6cf631958Lennart Poettering struct iovec iovec[N_IOVEC_META_FIELDS + 4];
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], "PRIORITY=6");
d682b3a7e7c7c2941a4d3e193f1e330dbc9fae89Lennart Poettering IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver");
d682b3a7e7c7c2941a4d3e193f1e330dbc9fae89Lennart Poettering 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)) {
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek snprintf(mid, sizeof(mid), MESSAGE_ID(message_id));
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek IOVEC_SET_STRING(iovec[n++], mid);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek struct iovec *iovec, unsigned n, unsigned m,
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek _cleanup_free_ char *path = NULL;
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering if (LOG_PRI(priority) > s->max_level_store)
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = cg_pid_get_path_shifted(ucred->pid, NULL, &path);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek /* example: /user/lennart/3/foobar
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek * So let's cut of everything past the third /, since that is
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek * where user directories start */
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering rl = journal_rate_limit_test(s->rate_limit, path,
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek priority & LOG_PRIMASK, available_space(s));
de0671ee7fe465e108f62dcbbbe9366f81dd9e9aZbigniew Jędrzejewski-Szmek /* Write a suppression message if we suppressed something */
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED,
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek "Suppressed %u messages from %s", rl - 1, path);
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id);
19cace379f3f680d3201cd257ab3ca6708b2d45dLennart Poetteringstatic int system_journal_open(Server *s) {
968f319679d9069af037240d0c3bcd126181cdacZbigniew Jędrzejewski-Szmek r = sd_id128_get_machine(&machine);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek sd_id128_to_string(machine, ids);
a569398925430de1f8479262e8ab39502054f2e9Lennart Poettering (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) &&
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek access("/run/systemd/journal/flushed", F_OK) >= 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* If in auto mode: first try to create the machine
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * path, but not the prefix.
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering * If in persistent mode: create /var/log/journal and
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering * the machine path */
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering fn = strappend("/var/log/journal/", ids);
759c945a43577d56e85a927f15e7d9aaa94a4e4aColin Walters fn = strjoin("/var/log/journal/", ids, "/system.journal", NULL);
edc3797f7cd9e37c24e5241cac3263e7c918f732Lennart Poettering r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal);
d07f7b9ef2835c290d6beadebd17d15308608eeaLennart Poettering server_driver_message(s, SD_ID128_NULL, "Allowing system journal files to grow to %s.",
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek format_bytes(fb, sizeof(fb), s->system_metrics.max_use));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek } else if (r < 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (r != -ENOENT && r != -EROFS)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("Failed to open system journal: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek fn = strjoin("/run/log/journal/", ids, "/system.journal", NULL);
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 */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek 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("Failed to open runtime journal: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* OK, we really need the runtime journal, so create
3b3154df7e2773332bb814e167187367a0ccae4aLennart Poettering * it if necessary. */
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);
7027ff61a34a12487712b382a061c654acc3a679Lennart Poettering log_error("Failed to open runtime journal: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek server_fix_perms(s, s->runtime_journal, 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek server_driver_message(s, SD_ID128_NULL, "Allowing runtime journal files to grow to %s.",
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek format_bytes(fb, sizeof(fb), s->runtime_metrics.max_use));
2f5df74a5ec135ab2baebf26af6f088e5b4b8205Holger Hans Peter Freytherint server_flush_to_var(Server *s) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (s->storage != STORAGE_AUTO &&
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->storage != STORAGE_PERSISTENT)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_debug("Flushing to /var...");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = sd_id128_get_machine(&machine);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Failed to get machine id: %s", strerror(-r));
db91ea32aa223d1b087d99811226a9c59a1bb281Zbigniew Jędrzejewski-Szmek r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Failed to read runtime journal: %s", strerror(-r));
db91ea32aa223d1b087d99811226a9c59a1bb281Zbigniew Jędrzejewski-Szmek sd_journal_set_data_threshold(j, 0);
caa2f4c0c9613b2e02aafa308c8fb092576014a9Zbigniew Jędrzejewski-Szmek assert(f && f->current_offset > 0);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Can't read entry: %s", strerror(-r));
23bbb0de4e3f85d9704a5c12a5afa2dfa0159e41Michal Schmidt 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("Can't write entry: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek 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);
63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering log_error("Can't write entry: %s", strerror(-r));
e40ec7aec5e64cd0cfa5fc556d6a9747229b5794Zbigniew Jędrzejewski-Szmek journal_file_close(s->runtime_journal);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek rm_rf("/run/log/journal", false, true, false);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekint process_event(Server *s, struct epoll_event *ev) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (ev->data.fd == s->signal_fd) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Got invalid event from epoll.");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek n = read(s->signal_fd, &sfsi, sizeof(sfsi));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (n != sizeof(sfsi)) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (errno == EINTR || errno == EAGAIN)
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek touch("/run/systemd/journal/flushed");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (sfsi.ssi_signo == SIGUSR2) {
670b110c3b59dfa335ac43065b2038400d1d04a9Zbigniew Jędrzejewski-Szmek log_info("Received SIG%s", signal_to_string(sfsi.ssi_signo));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek } else if (ev->data.fd == s->sync_timer_fd) {
fbb634117d0b0ebd5b105e65b141e75ae9af7f8fLennart Poettering log_debug("Got sync request from epoll.");
fbb634117d0b0ebd5b105e65b141e75ae9af7f8fLennart Poettering r = read(ev->data.fd, (void *)&t, sizeof(t));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek } else if (ev->data.fd == s->dev_kmsg_fd) {
caa2f4c0c9613b2e02aafa308c8fb092576014a9Zbigniew Jędrzejewski-Szmek log_error("Got invalid event from epoll.");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek /* We use NAME_MAX space for the
da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt * SELinux label here. The kernel
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * currently enforces no limit, but
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * according to suggestions from the
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * SELinux people this will change and
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * it will probably be identical to
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * NAME_MAX. For now we use that, but
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * this should be updated one day when
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek * the final limit is known.*/
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek CMSG_SPACE(sizeof(int)) + /* fd */
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek CMSG_SPACE(NAME_MAX)]; /* selinux label */
253f59dff9c93ee1d2c33444b5715e42bc1c6889Lennart Poettering if (ioctl(ev->data.fd, SIOCINQ, &v) < 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (s->buffer_size < (size_t) v) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek l = MAX(LINE_MAX + (size_t) v, s->buffer_size * 2);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Couldn't increase buffer.");
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering n = recvmsg(ev->data.fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred)))
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering else if (cmsg->cmsg_level == SOL_SOCKET &&
bdd13f6be4b588568683a1ab54f421fc6a636dbbZbigniew Jędrzejewski-Szmek label = (char*) CMSG_DATA(cmsg);
bdd13f6be4b588568683a1ab54f421fc6a636dbbZbigniew Jędrzejewski-Szmek label_len = cmsg->cmsg_len - CMSG_LEN(0);
bdd13f6be4b588568683a1ab54f421fc6a636dbbZbigniew Jędrzejewski-Szmek } else if (cmsg->cmsg_level == SOL_SOCKET &&
bdd13f6be4b588568683a1ab54f421fc6a636dbbZbigniew Jędrzejewski-Szmek cmsg->cmsg_type == SO_TIMESTAMP &&
bdd13f6be4b588568683a1ab54f421fc6a636dbbZbigniew Jędrzejewski-Szmek cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval)))
bdd13f6be4b588568683a1ab54f421fc6a636dbbZbigniew Jędrzejewski-Szmek tv = (struct timeval*) CMSG_DATA(cmsg);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering if (n > 0 && n_fds == 0) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering } else if (n_fds > 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering log_warning("Got file descriptors via syslog socket. Ignoring.");
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering if (n > 0 && n_fds == 0)
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len);
875c2e220e2611165e09051c4747971811f1de58Lennart Poettering server_process_native_file(s, fds[0], ucred, tv, label, label_len);
7517e17443225fafea86b21e42a36af69feb1dbcTorstein Husebø log_warning("Got too many file descriptors via native socket. Ignoring.");
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering } else if (ev->data.fd == s->stdout_fd) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_error("Got invalid event from epoll.");
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering if ((ev->events|EPOLLIN|EPOLLHUP) != (EPOLLIN|EPOLLHUP)) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_error("Got invalid event from epoll.");
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering /* If it is none of the well-known fds, it must be an
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering * stdout stream fd. Note that this is a bit ugly here
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering * (since we rely that none of the well-known fds
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering * could be interpreted as pointer), but nonetheless
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering * safe, since the well-known fds would never get an
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering * fd > 4096, i.e. beyond the first memory page */
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering s->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->signal_fd, &ev) < 0) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic int server_parse_proc_cmdline(Server *s) {
74055aa76278232ff05574fc47c4e6b3560554a7Lennart Poettering r = read_one_line_file("/proc/cmdline", &line);
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek if (startswith(word, "systemd.journald.forward_to_syslog=")) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew 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=")) {
4daf54a851e4fb7ed1a13c3117bba12528fd2c7fZbigniew Jędrzejewski-Szmek log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek } else if (startswith(word, "systemd.journald.forward_to_console=")) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek } else if (startswith(word, "systemd.journald"))
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("Invalid systemd.journald parameter. Ignoring.");
151b9b9662a90455262ce575a8a8ae74bf4ff336Lennart Poetteringstatic int server_parse_config_file(Server *s) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering static const char fn[] = "/etc/systemd/journald.conf";
151b9b9662a90455262ce575a8a8ae74bf4ff336Lennart Poettering log_warning("Failed to open configuration file %s: %m", fn);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = config_parse(NULL, fn, f, "Journal\0", config_item_perf_lookup,
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek (void*) journald_gperf_lookup, false, false, s);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_warning("Failed to parse configuration file: %s", strerror(-r));
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekstatic int server_open_sync_timer(Server *s) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek s->sync_timer_fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek r = epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->sync_timer_fd, &ev);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek log_error("Failed to add idle timer fd to epoll object: %m");
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekint server_schedule_sync(Server *s) {
40b71e89bae4e51768db4dc50ec64c1e9c96eec4Sebastian Thorarensen struct itimerspec sync_timer_enable = {};
40b71e89bae4e51768db4dc50ec64c1e9c96eec4Sebastian Thorarensen timespec_store(&sync_timer_enable.it_value, s->sync_interval_usec);
40b71e89bae4e51768db4dc50ec64c1e9c96eec4Sebastian Thorarensen r = timerfd_settime(s->sync_timer_fd, 0, &sync_timer_enable, NULL);
a9edaeff8481573764288ccf7e433a95b6dc7c03Josh Triplett s->sync_timer_fd = s->syslog_fd = s->native_fd = s->stdout_fd =
a9edaeff8481573764288ccf7e433a95b6dc7c03Josh Triplett s->signal_fd = s->epoll_fd = s->dev_kmsg_fd = -1;
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC;
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL;
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST;
d07f7b9ef2835c290d6beadebd17d15308608eeaLennart Poettering memset(&s->system_metrics, 0xFF, sizeof(s->system_metrics));
d07f7b9ef2835c290d6beadebd17d15308608eeaLennart Poettering memset(&s->runtime_metrics, 0xFF, sizeof(s->runtime_metrics));
d07f7b9ef2835c290d6beadebd17d15308608eeaLennart Poettering if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) {
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk log_debug("Setting both rate limit interval and burst from %llu,%u to 0,0",
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk (long long unsigned) s->rate_limit_interval,
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering s->rate_limit_interval = s->rate_limit_burst = 0;
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering s->user_journals = hashmap_new(trivial_hash_func, trivial_compare_func);
6a0f1f6d5af7c7300d3db7a0ba2b068f8abd222bLennart Poettering s->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
6a0f1f6d5af7c7300d3db7a0ba2b068f8abd222bLennart Poettering log_error("Failed to create epoll object: %m");
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_error("Failed to read listening file descriptors from environment: %s", strerror(-n));
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
26687bf8a907009dedcff79346860ed41511405eOleksii Shevchuk if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) {
f9a810bedacf1da7c505c1786a2416d592665926Lennart Poettering log_error("Too many native sockets passed.");
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) {
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_error("Too many stdout sockets passed.");
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0) {
0c24bb2346b6b6232d67aacd5236b56ea4989de4Lennart Poettering log_error("Too many /dev/log sockets passed.");
40b71e89bae4e51768db4dc50ec64c1e9c96eec4Sebastian Thorarensen s->rate_limit = journal_rate_limit_new(s->rate_limit_interval,
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmekvoid server_maybe_append_tags(Server *s) {
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek journal_file_maybe_append_tag(s->system_journal, n);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek journal_file_maybe_append_tag(f, n);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek while ((f = hashmap_steal_first(s->user_journals)))
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek close_nointr_nofail(s->epoll_fd);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek close_nointr_nofail(s->signal_fd);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek close_nointr_nofail(s->syslog_fd);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek close_nointr_nofail(s->native_fd);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek close_nointr_nofail(s->stdout_fd);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek close_nointr_nofail(s->sync_timer_fd);
d025f1e4dca8fc1436aff76f9e6185fe3e728daaZbigniew Jędrzejewski-Szmek journal_rate_limit_free(s->rate_limit);