+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2011 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <sys/signalfd.h>
-#include <sys/ioctl.h>
-#include <linux/sockios.h>
-#include <sys/statvfs.h>
-#include <sys/mman.h>
-
-#include <libudev.h>
-
-#include "sd-journal.h"
-#include "sd-messages.h"
-#include "sd-daemon.h"
-#include "mkdir.h"
-#include "hashmap.h"
-#include "journal-file.h"
-#include "socket-util.h"
-#include "cgroup-util.h"
-#include "missing.h"
-#include "conf-parser.h"
-#include "selinux-util.h"
-#include "journal-internal.h"
-#include "journal-vacuum.h"
-#include "journal-authenticate.h"
-#include "journald-rate-limit.h"
-#include "journald-kmsg.h"
-#include "journald-syslog.h"
-#include "journald-stream.h"
-#include "journald-native.h"
-#include "journald-audit.h"
-#include "journald-server.h"
-#include "acl-util.h"
-
-#ifdef HAVE_SELINUX
-#include <selinux/selinux.h>
-#endif
-
-#define USER_JOURNALS_MAX 1024
-
-#define DEFAULT_SYNC_INTERVAL_USEC (5*USEC_PER_MINUTE)
-#define DEFAULT_RATE_LIMIT_INTERVAL (30*USEC_PER_SEC)
-#define DEFAULT_RATE_LIMIT_BURST 1000
-#define DEFAULT_MAX_FILE_USEC USEC_PER_MONTH
-
-#define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC)
-
-static const char* const storage_table[_STORAGE_MAX] = {
- [STORAGE_AUTO] = "auto",
- [STORAGE_VOLATILE] = "volatile",
- [STORAGE_PERSISTENT] = "persistent",
- [STORAGE_NONE] = "none"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(storage, Storage);
-DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting");
-
-static const char* const split_mode_table[_SPLIT_MAX] = {
- [SPLIT_LOGIN] = "login",
- [SPLIT_UID] = "uid",
- [SPLIT_NONE] = "none",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode);
-DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting");
-
-static uint64_t available_space(Server *s, bool verbose) {
- char ids[33];
- _cleanup_free_ char *p = NULL;
- sd_id128_t machine;
- struct statvfs ss;
- uint64_t sum = 0, ss_avail = 0, avail = 0;
- int r;
- _cleanup_closedir_ DIR *d = NULL;
- usec_t ts;
- const char *f;
- JournalMetrics *m;
-
- ts = now(CLOCK_MONOTONIC);
-
- if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts
- && !verbose)
- return s->cached_available_space;
-
- r = sd_id128_get_machine(&machine);
- if (r < 0)
- return 0;
-
- if (s->system_journal) {
- f = "/var/log/journal/";
- m = &s->system_metrics;
- } else {
- f = "/run/log/journal/";
- m = &s->runtime_metrics;
- }
-
- assert(m);
-
- p = strappend(f, sd_id128_to_string(machine, ids));
- if (!p)
- return 0;
-
- d = opendir(p);
- if (!d)
- return 0;
-
- if (fstatvfs(dirfd(d), &ss) < 0)
- return 0;
-
- for (;;) {
- struct stat st;
- struct dirent *de;
-
- errno = 0;
- de = readdir(d);
- if (!de && errno != 0)
- return 0;
-
- if (!de)
- break;
-
- if (!endswith(de->d_name, ".journal") &&
- !endswith(de->d_name, ".journal~"))
- continue;
-
- if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
- continue;
-
- if (!S_ISREG(st.st_mode))
- continue;
-
- sum += (uint64_t) st.st_blocks * 512UL;
- }
-
- ss_avail = ss.f_bsize * ss.f_bavail;
-
- /* If we reached a high mark, we will always allow this much
- * again, unless usage goes above max_use. This watermark
- * value is cached so that we don't give up space on pressure,
- * but hover below the maximum usage. */
-
- if (m->use < sum)
- m->use = sum;
-
- avail = LESS_BY(ss_avail, m->keep_free);
-
- s->cached_available_space = LESS_BY(MIN(m->max_use, avail), sum);
- s->cached_available_space_timestamp = ts;
-
- if (verbose) {
- char fb1[FORMAT_BYTES_MAX], fb2[FORMAT_BYTES_MAX], fb3[FORMAT_BYTES_MAX],
- fb4[FORMAT_BYTES_MAX], fb5[FORMAT_BYTES_MAX];
-
- server_driver_message(s, SD_MESSAGE_JOURNAL_USAGE,
- "%s journal is using %s (max allowed %s, "
- "trying to leave %s free of %s available → current limit %s).",
- s->system_journal ? "Permanent" : "Runtime",
- format_bytes(fb1, sizeof(fb1), sum),
- format_bytes(fb2, sizeof(fb2), m->max_use),
- format_bytes(fb3, sizeof(fb3), m->keep_free),
- format_bytes(fb4, sizeof(fb4), ss_avail),
- format_bytes(fb5, sizeof(fb5), s->cached_available_space + sum));
- }
-
- return s->cached_available_space;
-}
-
-void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
- int r;
-#ifdef HAVE_ACL
- acl_t acl;
- acl_entry_t entry;
- acl_permset_t permset;
-#endif
-
- assert(f);
-
- r = fchmod(f->fd, 0640);
- if (r < 0)
- log_warning_errno(r, "Failed to fix access mode on %s, ignoring: %m", f->path);
-
-#ifdef HAVE_ACL
- if (uid <= SYSTEM_UID_MAX)
- return;
-
- acl = acl_get_fd(f->fd);
- if (!acl) {
- log_warning_errno(errno, "Failed to read ACL on %s, ignoring: %m", f->path);
- return;
- }
-
- r = acl_find_uid(acl, uid, &entry);
- if (r <= 0) {
-
- if (acl_create_entry(&acl, &entry) < 0 ||
- acl_set_tag_type(entry, ACL_USER) < 0 ||
- acl_set_qualifier(entry, &uid) < 0) {
- log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path);
- goto finish;
- }
- }
-
- /* We do not recalculate the mask unconditionally here,
- * so that the fchmod() mask above stays intact. */
- if (acl_get_permset(entry, &permset) < 0 ||
- acl_add_perm(permset, ACL_READ) < 0 ||
- calc_acl_mask_if_needed(&acl) < 0) {
- log_warning_errno(errno, "Failed to patch ACL on %s, ignoring: %m", f->path);
- goto finish;
- }
-
- if (acl_set_fd(f->fd, acl) < 0)
- log_warning_errno(errno, "Failed to set ACL on %s, ignoring: %m", f->path);
-
-finish:
- acl_free(acl);
-#endif
-}
-
-static JournalFile* find_journal(Server *s, uid_t uid) {
- _cleanup_free_ char *p = NULL;
- int r;
- JournalFile *f;
- sd_id128_t machine;
-
- assert(s);
-
- /* We split up user logs only on /var, not on /run. If the
- * runtime file is open, we write to it exclusively, in order
- * to guarantee proper order as soon as we flush /run to
- * /var and close the runtime file. */
-
- if (s->runtime_journal)
- return s->runtime_journal;
-
- if (uid <= SYSTEM_UID_MAX)
- return s->system_journal;
-
- r = sd_id128_get_machine(&machine);
- if (r < 0)
- return s->system_journal;
-
- f = ordered_hashmap_get(s->user_journals, UINT32_TO_PTR(uid));
- if (f)
- return f;
-
- if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-"UID_FMT".journal",
- SD_ID128_FORMAT_VAL(machine), uid) < 0)
- return s->system_journal;
-
- while (ordered_hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) {
- /* Too many open? Then let's close one */
- f = ordered_hashmap_steal_first(s->user_journals);
- assert(f);
- journal_file_close(f);
- }
-
- r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &f);
- if (r < 0)
- return s->system_journal;
-
- server_fix_perms(s, f, uid);
-
- r = ordered_hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f);
- if (r < 0) {
- journal_file_close(f);
- return s->system_journal;
- }
-
- return f;
-}
-
-static int do_rotate(
- Server *s,
- JournalFile **f,
- const char* name,
- bool seal,
- uint32_t uid) {
-
- int r;
- assert(s);
-
- if (!*f)
- return -EINVAL;
-
- r = journal_file_rotate(f, s->compress, seal);
- if (r < 0)
- if (*f)
- log_error_errno(r, "Failed to rotate %s: %m", (*f)->path);
- else
- log_error_errno(r, "Failed to create new %s journal: %m", name);
- else
- server_fix_perms(s, *f, uid);
-
- return r;
-}
-
-void server_rotate(Server *s) {
- JournalFile *f;
- void *k;
- Iterator i;
- int r;
-
- log_debug("Rotating...");
-
- do_rotate(s, &s->runtime_journal, "runtime", false, 0);
- do_rotate(s, &s->system_journal, "system", s->seal, 0);
-
- ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
- r = do_rotate(s, &f, "user", s->seal, PTR_TO_UINT32(k));
- if (r >= 0)
- ordered_hashmap_replace(s->user_journals, k, f);
- else if (!f)
- /* Old file has been closed and deallocated */
- ordered_hashmap_remove(s->user_journals, k);
- }
-}
-
-void server_sync(Server *s) {
- JournalFile *f;
- void *k;
- Iterator i;
- int r;
-
- if (s->system_journal) {
- r = journal_file_set_offline(s->system_journal);
- if (r < 0)
- log_error_errno(r, "Failed to sync system journal: %m");
- }
-
- ORDERED_HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
- r = journal_file_set_offline(f);
- if (r < 0)
- log_error_errno(r, "Failed to sync user journal: %m");
- }
-
- if (s->sync_event_source) {
- r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_OFF);
- if (r < 0)
- log_error_errno(r, "Failed to disable sync timer source: %m");
- }
-
- s->sync_scheduled = false;
-}
-
-static void do_vacuum(
- Server *s,
- const char *id,
- JournalFile *f,
- const char* path,
- JournalMetrics *metrics) {
-
- const char *p;
- int r;
-
- if (!f)
- return;
-
- p = strjoina(path, id);
- r = journal_directory_vacuum(p, metrics->max_use, s->max_retention_usec, &s->oldest_file_usec, false);
- if (r < 0 && r != -ENOENT)
- log_error_errno(r, "Failed to vacuum %s: %m", p);
-}
-
-void server_vacuum(Server *s) {
- char ids[33];
- sd_id128_t machine;
- int r;
-
- log_debug("Vacuuming...");
-
- s->oldest_file_usec = 0;
-
- r = sd_id128_get_machine(&machine);
- if (r < 0) {
- log_error_errno(r, "Failed to get machine ID: %m");
- return;
- }
- sd_id128_to_string(machine, ids);
-
- do_vacuum(s, ids, s->system_journal, "/var/log/journal/", &s->system_metrics);
- do_vacuum(s, ids, s->runtime_journal, "/run/log/journal/", &s->runtime_metrics);
-
- s->cached_available_space_timestamp = 0;
-}
-
-static void server_cache_machine_id(Server *s) {
- sd_id128_t id;
- int r;
-
- assert(s);
-
- r = sd_id128_get_machine(&id);
- if (r < 0)
- return;
-
- sd_id128_to_string(id, stpcpy(s->machine_id_field, "_MACHINE_ID="));
-}
-
-static void server_cache_boot_id(Server *s) {
- sd_id128_t id;
- int r;
-
- assert(s);
-
- r = sd_id128_get_boot(&id);
- if (r < 0)
- return;
-
- sd_id128_to_string(id, stpcpy(s->boot_id_field, "_BOOT_ID="));
-}
-
-static void server_cache_hostname(Server *s) {
- _cleanup_free_ char *t = NULL;
- char *x;
-
- assert(s);
-
- t = gethostname_malloc();
- if (!t)
- return;
-
- x = strappend("_HOSTNAME=", t);
- if (!x)
- return;
-
- free(s->hostname_field);
- s->hostname_field = x;
-}
-
-static bool shall_try_append_again(JournalFile *f, int r) {
-
- /* -E2BIG Hit configured limit
- -EFBIG Hit fs limit
- -EDQUOT Quota limit hit
- -ENOSPC Disk full
- -EIO I/O error of some kind (mmap)
- -EHOSTDOWN Other machine
- -EBUSY Unclean shutdown
- -EPROTONOSUPPORT Unsupported feature
- -EBADMSG Corrupted
- -ENODATA Truncated
- -ESHUTDOWN Already archived
- -EIDRM Journal file has been deleted */
-
- if (r == -E2BIG || r == -EFBIG || r == -EDQUOT || r == -ENOSPC)
- log_debug("%s: Allocation limit reached, rotating.", f->path);
- else if (r == -EHOSTDOWN)
- log_info("%s: Journal file from other machine, rotating.", f->path);
- else if (r == -EBUSY)
- log_info("%s: Unclean shutdown, rotating.", f->path);
- else if (r == -EPROTONOSUPPORT)
- log_info("%s: Unsupported feature, rotating.", f->path);
- else if (r == -EBADMSG || r == -ENODATA || r == ESHUTDOWN)
- log_warning("%s: Journal file corrupted, rotating.", f->path);
- else if (r == -EIO)
- log_warning("%s: IO error, rotating.", f->path);
- else if (r == -EIDRM)
- log_warning("%s: Journal file has been deleted, rotating.", f->path);
- else
- return false;
-
- return true;
-}
-
-static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n, int priority) {
- JournalFile *f;
- bool vacuumed = false;
- int r;
-
- assert(s);
- assert(iovec);
- assert(n > 0);
-
- f = find_journal(s, uid);
- if (!f)
- return;
-
- if (journal_file_rotate_suggested(f, s->max_file_usec)) {
- log_debug("%s: Journal header limits reached or header out-of-date, rotating.", f->path);
- server_rotate(s);
- server_vacuum(s);
- vacuumed = true;
-
- f = find_journal(s, uid);
- if (!f)
- return;
- }
-
- r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
- if (r >= 0) {
- server_schedule_sync(s, priority);
- return;
- }
-
- if (vacuumed || !shall_try_append_again(f, r)) {
- log_error_errno(r, "Failed to write entry (%d items, %zu bytes), ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n));
- return;
- }
-
- server_rotate(s);
- server_vacuum(s);
-
- f = find_journal(s, uid);
- if (!f)
- return;
-
- log_debug("Retrying write.");
- r = journal_file_append_entry(f, NULL, iovec, n, &s->seqnum, NULL, NULL);
- if (r < 0)
- log_error_errno(r, "Failed to write entry (%d items, %zu bytes) despite vacuuming, ignoring: %m", n, IOVEC_TOTAL_SIZE(iovec, n));
- else
- server_schedule_sync(s, priority);
-}
-
-static void dispatch_message_real(
- Server *s,
- struct iovec *iovec, unsigned n, unsigned m,
- const struct ucred *ucred,
- const struct timeval *tv,
- const char *label, size_t label_len,
- const char *unit_id,
- int priority,
- pid_t object_pid) {
-
- char pid[sizeof("_PID=") + DECIMAL_STR_MAX(pid_t)],
- uid[sizeof("_UID=") + DECIMAL_STR_MAX(uid_t)],
- gid[sizeof("_GID=") + DECIMAL_STR_MAX(gid_t)],
- owner_uid[sizeof("_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)],
- source_time[sizeof("_SOURCE_REALTIME_TIMESTAMP=") + DECIMAL_STR_MAX(usec_t)],
- o_uid[sizeof("OBJECT_UID=") + DECIMAL_STR_MAX(uid_t)],
- o_gid[sizeof("OBJECT_GID=") + DECIMAL_STR_MAX(gid_t)],
- o_owner_uid[sizeof("OBJECT_SYSTEMD_OWNER_UID=") + DECIMAL_STR_MAX(uid_t)];
- uid_t object_uid;
- gid_t object_gid;
- char *x;
- int r;
- char *t, *c;
- uid_t realuid = 0, owner = 0, journal_uid;
- bool owner_valid = false;
-#ifdef HAVE_AUDIT
- char audit_session[sizeof("_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)],
- audit_loginuid[sizeof("_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)],
- o_audit_session[sizeof("OBJECT_AUDIT_SESSION=") + DECIMAL_STR_MAX(uint32_t)],
- o_audit_loginuid[sizeof("OBJECT_AUDIT_LOGINUID=") + DECIMAL_STR_MAX(uid_t)];
-
- uint32_t audit;
- uid_t loginuid;
-#endif
-
- assert(s);
- assert(iovec);
- assert(n > 0);
- assert(n + N_IOVEC_META_FIELDS + (object_pid ? N_IOVEC_OBJECT_FIELDS : 0) <= m);
-
- if (ucred) {
- realuid = ucred->uid;
-
- sprintf(pid, "_PID="PID_FMT, ucred->pid);
- IOVEC_SET_STRING(iovec[n++], pid);
-
- sprintf(uid, "_UID="UID_FMT, ucred->uid);
- IOVEC_SET_STRING(iovec[n++], uid);
-
- sprintf(gid, "_GID="GID_FMT, ucred->gid);
- IOVEC_SET_STRING(iovec[n++], gid);
-
- r = get_process_comm(ucred->pid, &t);
- if (r >= 0) {
- x = strjoina("_COMM=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- r = get_process_exe(ucred->pid, &t);
- if (r >= 0) {
- x = strjoina("_EXE=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- r = get_process_cmdline(ucred->pid, 0, false, &t);
- if (r >= 0) {
- x = strjoina("_CMDLINE=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- r = get_process_capeff(ucred->pid, &t);
- if (r >= 0) {
- x = strjoina("_CAP_EFFECTIVE=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
-#ifdef HAVE_AUDIT
- r = audit_session_from_pid(ucred->pid, &audit);
- if (r >= 0) {
- sprintf(audit_session, "_AUDIT_SESSION=%"PRIu32, audit);
- IOVEC_SET_STRING(iovec[n++], audit_session);
- }
-
- r = audit_loginuid_from_pid(ucred->pid, &loginuid);
- if (r >= 0) {
- sprintf(audit_loginuid, "_AUDIT_LOGINUID="UID_FMT, loginuid);
- IOVEC_SET_STRING(iovec[n++], audit_loginuid);
- }
-#endif
-
- r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &c);
- if (r >= 0) {
- char *session = NULL;
-
- x = strjoina("_SYSTEMD_CGROUP=", c);
- IOVEC_SET_STRING(iovec[n++], x);
-
- r = cg_path_get_session(c, &t);
- if (r >= 0) {
- session = strjoina("_SYSTEMD_SESSION=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], session);
- }
-
- if (cg_path_get_owner_uid(c, &owner) >= 0) {
- owner_valid = true;
-
- sprintf(owner_uid, "_SYSTEMD_OWNER_UID="UID_FMT, owner);
- IOVEC_SET_STRING(iovec[n++], owner_uid);
- }
-
- if (cg_path_get_unit(c, &t) >= 0) {
- x = strjoina("_SYSTEMD_UNIT=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- } else if (unit_id && !session) {
- x = strjoina("_SYSTEMD_UNIT=", unit_id);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- if (cg_path_get_user_unit(c, &t) >= 0) {
- x = strjoina("_SYSTEMD_USER_UNIT=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- } else if (unit_id && session) {
- x = strjoina("_SYSTEMD_USER_UNIT=", unit_id);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- if (cg_path_get_slice(c, &t) >= 0) {
- x = strjoina("_SYSTEMD_SLICE=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- free(c);
- } else if (unit_id) {
- x = strjoina("_SYSTEMD_UNIT=", unit_id);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
-#ifdef HAVE_SELINUX
- if (mac_selinux_use()) {
- if (label) {
- x = alloca(strlen("_SELINUX_CONTEXT=") + label_len + 1);
-
- *((char*) mempcpy(stpcpy(x, "_SELINUX_CONTEXT="), label, label_len)) = 0;
- IOVEC_SET_STRING(iovec[n++], x);
- } else {
- security_context_t con;
-
- if (getpidcon(ucred->pid, &con) >= 0) {
- x = strjoina("_SELINUX_CONTEXT=", con);
-
- freecon(con);
- IOVEC_SET_STRING(iovec[n++], x);
- }
- }
- }
-#endif
- }
- assert(n <= m);
-
- if (object_pid) {
- r = get_process_uid(object_pid, &object_uid);
- if (r >= 0) {
- sprintf(o_uid, "OBJECT_UID="UID_FMT, object_uid);
- IOVEC_SET_STRING(iovec[n++], o_uid);
- }
-
- r = get_process_gid(object_pid, &object_gid);
- if (r >= 0) {
- sprintf(o_gid, "OBJECT_GID="GID_FMT, object_gid);
- IOVEC_SET_STRING(iovec[n++], o_gid);
- }
-
- r = get_process_comm(object_pid, &t);
- if (r >= 0) {
- x = strjoina("OBJECT_COMM=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- r = get_process_exe(object_pid, &t);
- if (r >= 0) {
- x = strjoina("OBJECT_EXE=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- r = get_process_cmdline(object_pid, 0, false, &t);
- if (r >= 0) {
- x = strjoina("OBJECT_CMDLINE=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
-#ifdef HAVE_AUDIT
- r = audit_session_from_pid(object_pid, &audit);
- if (r >= 0) {
- sprintf(o_audit_session, "OBJECT_AUDIT_SESSION=%"PRIu32, audit);
- IOVEC_SET_STRING(iovec[n++], o_audit_session);
- }
-
- r = audit_loginuid_from_pid(object_pid, &loginuid);
- if (r >= 0) {
- sprintf(o_audit_loginuid, "OBJECT_AUDIT_LOGINUID="UID_FMT, loginuid);
- IOVEC_SET_STRING(iovec[n++], o_audit_loginuid);
- }
-#endif
-
- r = cg_pid_get_path_shifted(object_pid, s->cgroup_root, &c);
- if (r >= 0) {
- x = strjoina("OBJECT_SYSTEMD_CGROUP=", c);
- IOVEC_SET_STRING(iovec[n++], x);
-
- r = cg_path_get_session(c, &t);
- if (r >= 0) {
- x = strjoina("OBJECT_SYSTEMD_SESSION=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- if (cg_path_get_owner_uid(c, &owner) >= 0) {
- sprintf(o_owner_uid, "OBJECT_SYSTEMD_OWNER_UID="UID_FMT, owner);
- IOVEC_SET_STRING(iovec[n++], o_owner_uid);
- }
-
- if (cg_path_get_unit(c, &t) >= 0) {
- x = strjoina("OBJECT_SYSTEMD_UNIT=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- if (cg_path_get_user_unit(c, &t) >= 0) {
- x = strjoina("OBJECT_SYSTEMD_USER_UNIT=", t);
- free(t);
- IOVEC_SET_STRING(iovec[n++], x);
- }
-
- free(c);
- }
- }
- assert(n <= m);
-
- if (tv) {
- sprintf(source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu", (unsigned long long) timeval_load(tv));
- IOVEC_SET_STRING(iovec[n++], source_time);
- }
-
- /* Note that strictly speaking storing the boot id here is
- * redundant since the entry includes this in-line
- * anyway. However, we need this indexed, too. */
- if (!isempty(s->boot_id_field))
- IOVEC_SET_STRING(iovec[n++], s->boot_id_field);
-
- if (!isempty(s->machine_id_field))
- IOVEC_SET_STRING(iovec[n++], s->machine_id_field);
-
- if (!isempty(s->hostname_field))
- IOVEC_SET_STRING(iovec[n++], s->hostname_field);
-
- assert(n <= m);
-
- if (s->split_mode == SPLIT_UID && realuid > 0)
- /* Split up strictly by any UID */
- journal_uid = realuid;
- else if (s->split_mode == SPLIT_LOGIN && realuid > 0 && owner_valid && owner > 0)
- /* Split up by login UIDs. We do this only if the
- * realuid is not root, in order not to accidentally
- * leak privileged information to the user that is
- * logged by a privileged process that is part of an
- * unprivileged session. */
- journal_uid = owner;
- else
- journal_uid = 0;
-
- write_to_journal(s, journal_uid, iovec, n, priority);
-}
-
-void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) {
- char mid[11 + 32 + 1];
- char buffer[16 + LINE_MAX + 1];
- struct iovec iovec[N_IOVEC_META_FIELDS + 4];
- int n = 0;
- va_list ap;
- struct ucred ucred = {};
-
- assert(s);
- assert(format);
-
- IOVEC_SET_STRING(iovec[n++], "PRIORITY=6");
- IOVEC_SET_STRING(iovec[n++], "_TRANSPORT=driver");
-
- memcpy(buffer, "MESSAGE=", 8);
- va_start(ap, format);
- vsnprintf(buffer + 8, sizeof(buffer) - 8, format, ap);
- va_end(ap);
- IOVEC_SET_STRING(iovec[n++], buffer);
-
- if (!sd_id128_equal(message_id, SD_ID128_NULL)) {
- snprintf(mid, sizeof(mid), LOG_MESSAGE_ID(message_id));
- IOVEC_SET_STRING(iovec[n++], mid);
- }
-
- ucred.pid = getpid();
- ucred.uid = getuid();
- ucred.gid = getgid();
-
- dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL, LOG_INFO, 0);
-}
-
-void server_dispatch_message(
- Server *s,
- struct iovec *iovec, unsigned n, unsigned m,
- const struct ucred *ucred,
- const struct timeval *tv,
- const char *label, size_t label_len,
- const char *unit_id,
- int priority,
- pid_t object_pid) {
-
- int rl, r;
- _cleanup_free_ char *path = NULL;
- char *c;
-
- assert(s);
- assert(iovec || n == 0);
-
- if (n == 0)
- return;
-
- if (LOG_PRI(priority) > s->max_level_store)
- return;
-
- /* Stop early in case the information will not be stored
- * in a journal. */
- if (s->storage == STORAGE_NONE)
- return;
-
- if (!ucred)
- goto finish;
-
- r = cg_pid_get_path_shifted(ucred->pid, s->cgroup_root, &path);
- if (r < 0)
- goto finish;
-
- /* example: /user/lennart/3/foobar
- * /system/dbus.service/foobar
- *
- * So let's cut of everything past the third /, since that is
- * where user directories start */
-
- c = strchr(path, '/');
- if (c) {
- c = strchr(c+1, '/');
- if (c) {
- c = strchr(c+1, '/');
- if (c)
- *c = 0;
- }
- }
-
- rl = journal_rate_limit_test(s->rate_limit, path,
- priority & LOG_PRIMASK, available_space(s, false));
-
- if (rl == 0)
- return;
-
- /* Write a suppression message if we suppressed something */
- if (rl > 1)
- server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED,
- "Suppressed %u messages from %s", rl - 1, path);
-
-finish:
- dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id, priority, object_pid);
-}
-
-
-static int system_journal_open(Server *s, bool flush_requested) {
- int r;
- char *fn;
- sd_id128_t machine;
- char ids[33];
-
- r = sd_id128_get_machine(&machine);
- if (r < 0)
- return log_error_errno(r, "Failed to get machine id: %m");
-
- sd_id128_to_string(machine, ids);
-
- if (!s->system_journal &&
- (s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) &&
- (flush_requested
- || access("/run/systemd/journal/flushed", F_OK) >= 0)) {
-
- /* If in auto mode: first try to create the machine
- * path, but not the prefix.
- *
- * If in persistent mode: create /var/log/journal and
- * the machine path */
-
- if (s->storage == STORAGE_PERSISTENT)
- (void) mkdir("/var/log/journal/", 0755);
-
- fn = strjoina("/var/log/journal/", ids);
- (void) mkdir(fn, 0755);
-
- fn = strjoina(fn, "/system.journal");
- r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal);
-
- if (r >= 0)
- server_fix_perms(s, s->system_journal, 0);
- else if (r < 0) {
- if (r != -ENOENT && r != -EROFS)
- log_warning_errno(r, "Failed to open system journal: %m");
-
- r = 0;
- }
- }
-
- if (!s->runtime_journal &&
- (s->storage != STORAGE_NONE)) {
-
- fn = strjoin("/run/log/journal/", ids, "/system.journal", NULL);
- if (!fn)
- return -ENOMEM;
-
- if (s->system_journal) {
-
- /* Try to open the runtime journal, but only
- * if it already exists, so that we can flush
- * it into the system journal */
-
- r = journal_file_open(fn, O_RDWR, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal);
- free(fn);
-
- if (r < 0) {
- if (r != -ENOENT)
- log_warning_errno(r, "Failed to open runtime journal: %m");
-
- r = 0;
- }
-
- } else {
-
- /* OK, we really need the runtime journal, so create
- * it if necessary. */
-
- (void) mkdir("/run/log", 0755);
- (void) mkdir("/run/log/journal", 0755);
- (void) mkdir_parents(fn, 0750);
-
- r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, false, &s->runtime_metrics, s->mmap, NULL, &s->runtime_journal);
- free(fn);
-
- if (r < 0)
- return log_error_errno(r, "Failed to open runtime journal: %m");
- }
-
- if (s->runtime_journal)
- server_fix_perms(s, s->runtime_journal, 0);
- }
-
- available_space(s, true);
-
- return r;
-}
-
-int server_flush_to_var(Server *s) {
- sd_id128_t machine;
- sd_journal *j = NULL;
- char ts[FORMAT_TIMESPAN_MAX];
- usec_t start;
- unsigned n = 0;
- int r;
-
- assert(s);
-
- if (s->storage != STORAGE_AUTO &&
- s->storage != STORAGE_PERSISTENT)
- return 0;
-
- if (!s->runtime_journal)
- return 0;
-
- system_journal_open(s, true);
-
- if (!s->system_journal)
- return 0;
-
- log_debug("Flushing to /var...");
-
- start = now(CLOCK_MONOTONIC);
-
- r = sd_id128_get_machine(&machine);
- if (r < 0)
- return r;
-
- r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY);
- if (r < 0)
- return log_error_errno(r, "Failed to read runtime journal: %m");
-
- sd_journal_set_data_threshold(j, 0);
-
- SD_JOURNAL_FOREACH(j) {
- Object *o = NULL;
- JournalFile *f;
-
- f = j->current_file;
- assert(f && f->current_offset > 0);
-
- n++;
-
- r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o);
- if (r < 0) {
- log_error_errno(r, "Can't read entry: %m");
- goto finish;
- }
-
- r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
- if (r >= 0)
- continue;
-
- if (!shall_try_append_again(s->system_journal, r)) {
- log_error_errno(r, "Can't write entry: %m");
- goto finish;
- }
-
- server_rotate(s);
- server_vacuum(s);
-
- if (!s->system_journal) {
- log_notice("Didn't flush runtime journal since rotation of system journal wasn't successful.");
- r = -EIO;
- goto finish;
- }
-
- log_debug("Retrying write.");
- r = journal_file_copy_entry(f, s->system_journal, o, f->current_offset, NULL, NULL, NULL);
- if (r < 0) {
- log_error_errno(r, "Can't write entry: %m");
- goto finish;
- }
- }
-
-finish:
- journal_file_post_change(s->system_journal);
-
- journal_file_close(s->runtime_journal);
- s->runtime_journal = NULL;
-
- if (r >= 0)
- rm_rf("/run/log/journal", false, true, false);
-
- sd_journal_close(j);
-
- 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);
-
- return r;
-}
-
-int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
- Server *s = userdata;
-
- assert(s);
- assert(fd == s->native_fd || fd == s->syslog_fd || fd == s->audit_fd);
-
- if (revents != EPOLLIN) {
- log_error("Got invalid event from epoll for datagram fd: %"PRIx32, revents);
- return -EIO;
- }
-
- for (;;) {
- struct ucred *ucred = NULL;
- struct timeval *tv = NULL;
- struct cmsghdr *cmsg;
- char *label = NULL;
- size_t label_len = 0;
- struct iovec iovec;
-
- union {
- struct cmsghdr cmsghdr;
-
- /* We use NAME_MAX space for the SELinux label
- * here. The kernel currently enforces no
- * limit, but according to suggestions from
- * the SELinux people this will change and it
- * will probably be identical to NAME_MAX. For
- * now we use that, but this should be updated
- * one day when the final limit is known. */
- uint8_t buf[CMSG_SPACE(sizeof(struct ucred)) +
- CMSG_SPACE(sizeof(struct timeval)) +
- CMSG_SPACE(sizeof(int)) + /* fd */
- CMSG_SPACE(NAME_MAX)]; /* selinux label */
- } control = {};
- union sockaddr_union sa = {};
- struct msghdr msghdr = {
- .msg_iov = &iovec,
- .msg_iovlen = 1,
- .msg_control = &control,
- .msg_controllen = sizeof(control),
- .msg_name = &sa,
- .msg_namelen = sizeof(sa),
- };
-
- ssize_t n;
- int *fds = NULL;
- unsigned n_fds = 0;
- int v = 0;
- size_t m;
-
- /* Try to get the right size, if we can. (Not all
- * sockets support SIOCINQ, hence we just try, but
- * don't rely on it. */
- (void) ioctl(fd, SIOCINQ, &v);
-
- /* Fix it up, if it is too small. We use the same fixed value as auditd here. Awful! */
- m = PAGE_ALIGN(MAX3((size_t) v + 1,
- (size_t) LINE_MAX,
- ALIGN(sizeof(struct nlmsghdr)) + ALIGN((size_t) MAX_AUDIT_MESSAGE_LENGTH)) + 1);
-
- if (!GREEDY_REALLOC(s->buffer, s->buffer_size, m))
- return log_oom();
-
- iovec.iov_base = s->buffer;
- iovec.iov_len = s->buffer_size - 1; /* Leave room for trailing NUL we add later */
-
- n = recvmsg(fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
- if (n < 0) {
- if (errno == EINTR || errno == EAGAIN)
- return 0;
-
- log_error_errno(errno, "recvmsg() failed: %m");
- return -errno;
- }
-
- for (cmsg = CMSG_FIRSTHDR(&msghdr); cmsg; cmsg = CMSG_NXTHDR(&msghdr, cmsg)) {
-
- if (cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SCM_CREDENTIALS &&
- cmsg->cmsg_len == CMSG_LEN(sizeof(struct ucred)))
- ucred = (struct ucred*) CMSG_DATA(cmsg);
- else if (cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SCM_SECURITY) {
- label = (char*) CMSG_DATA(cmsg);
- label_len = cmsg->cmsg_len - CMSG_LEN(0);
- } else if (cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SO_TIMESTAMP &&
- cmsg->cmsg_len == CMSG_LEN(sizeof(struct timeval)))
- tv = (struct timeval*) CMSG_DATA(cmsg);
- else if (cmsg->cmsg_level == SOL_SOCKET &&
- cmsg->cmsg_type == SCM_RIGHTS) {
- fds = (int*) CMSG_DATA(cmsg);
- n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
- }
- }
-
- /* And a trailing NUL, just in case */
- s->buffer[n] = 0;
-
- if (fd == s->syslog_fd) {
- if (n > 0 && n_fds == 0)
- server_process_syslog_message(s, strstrip(s->buffer), ucred, tv, label, label_len);
- else if (n_fds > 0)
- log_warning("Got file descriptors via syslog socket. Ignoring.");
-
- } else if (fd == s->native_fd) {
- if (n > 0 && n_fds == 0)
- server_process_native_message(s, s->buffer, n, ucred, tv, label, label_len);
- else if (n == 0 && n_fds == 1)
- server_process_native_file(s, fds[0], ucred, tv, label, label_len);
- else if (n_fds > 0)
- log_warning("Got too many file descriptors via native socket. Ignoring.");
-
- } else {
- assert(fd == s->audit_fd);
-
- if (n > 0 && n_fds == 0)
- server_process_audit_message(s, s->buffer, n, ucred, &sa, msghdr.msg_namelen);
- else if (n_fds > 0)
- log_warning("Got file descriptors via audit socket. Ignoring.");
- }
-
- close_many(fds, n_fds);
- }
-}
-
-static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
- Server *s = userdata;
-
- assert(s);
-
- log_info("Received request to flush runtime journal from PID %"PRIu32, si->ssi_pid);
-
- server_flush_to_var(s);
- server_sync(s);
- server_vacuum(s);
-
- touch("/run/systemd/journal/flushed");
-
- return 0;
-}
-
-static int dispatch_sigusr2(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
- Server *s = userdata;
-
- assert(s);
-
- log_info("Received request to rotate journal from PID %"PRIu32, si->ssi_pid);
- server_rotate(s);
- server_vacuum(s);
-
- return 0;
-}
-
-static int dispatch_sigterm(sd_event_source *es, const struct signalfd_siginfo *si, void *userdata) {
- Server *s = userdata;
-
- assert(s);
-
- log_received_signal(LOG_INFO, si);
-
- sd_event_exit(s->event, 0);
- return 0;
-}
-
-static int setup_signals(Server *s) {
- sigset_t mask;
- int r;
-
- assert(s);
-
- assert_se(sigemptyset(&mask) == 0);
- sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1);
- assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
-
- r = sd_event_add_signal(s->event, &s->sigusr1_event_source, SIGUSR1, dispatch_sigusr1, s);
- if (r < 0)
- return r;
-
- r = sd_event_add_signal(s->event, &s->sigusr2_event_source, SIGUSR2, dispatch_sigusr2, s);
- if (r < 0)
- return r;
-
- r = sd_event_add_signal(s->event, &s->sigterm_event_source, SIGTERM, dispatch_sigterm, s);
- if (r < 0)
- return r;
-
- r = sd_event_add_signal(s->event, &s->sigint_event_source, SIGINT, dispatch_sigterm, s);
- if (r < 0)
- return r;
-
- return 0;
-}
-
-static int server_parse_proc_cmdline(Server *s) {
- _cleanup_free_ char *line = NULL;
- const char *w, *state;
- size_t l;
- int r;
-
- r = proc_cmdline(&line);
- if (r < 0) {
- log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m");
- return 0;
- }
-
- FOREACH_WORD_QUOTED(w, l, line, state) {
- _cleanup_free_ char *word;
-
- word = strndup(w, l);
- if (!word)
- return -ENOMEM;
-
- if (startswith(word, "systemd.journald.forward_to_syslog=")) {
- r = parse_boolean(word + 35);
- if (r < 0)
- log_warning("Failed to parse forward to syslog switch %s. Ignoring.", word + 35);
- else
- s->forward_to_syslog = r;
- } else if (startswith(word, "systemd.journald.forward_to_kmsg=")) {
- r = parse_boolean(word + 33);
- if (r < 0)
- log_warning("Failed to parse forward to kmsg switch %s. Ignoring.", word + 33);
- else
- s->forward_to_kmsg = r;
- } else if (startswith(word, "systemd.journald.forward_to_console=")) {
- r = parse_boolean(word + 36);
- if (r < 0)
- log_warning("Failed to parse forward to console switch %s. Ignoring.", word + 36);
- else
- s->forward_to_console = r;
- } else if (startswith(word, "systemd.journald.forward_to_wall=")) {
- r = parse_boolean(word + 33);
- if (r < 0)
- log_warning("Failed to parse forward to wall switch %s. Ignoring.", word + 33);
- else
- s->forward_to_wall = r;
- } else if (startswith(word, "systemd.journald"))
- log_warning("Invalid systemd.journald parameter. Ignoring.");
- }
- /* do not warn about state here, since probably systemd already did */
-
- return 0;
-}
-
-static int server_parse_config_file(Server *s) {
- assert(s);
-
- return config_parse_many("/etc/systemd/journald.conf",
- CONF_DIRS_NULSTR("systemd/journald.conf"),
- "Journal\0",
- config_item_perf_lookup, journald_gperf_lookup,
- false, s);
-}
-
-static int server_dispatch_sync(sd_event_source *es, usec_t t, void *userdata) {
- Server *s = userdata;
-
- assert(s);
-
- server_sync(s);
- return 0;
-}
-
-int server_schedule_sync(Server *s, int priority) {
- int r;
-
- assert(s);
-
- if (priority <= LOG_CRIT) {
- /* Immediately sync to disk when this is of priority CRIT, ALERT, EMERG */
- server_sync(s);
- return 0;
- }
-
- if (s->sync_scheduled)
- return 0;
-
- if (s->sync_interval_usec > 0) {
- usec_t when;
-
- r = sd_event_now(s->event, CLOCK_MONOTONIC, &when);
- if (r < 0)
- return r;
-
- when += s->sync_interval_usec;
-
- if (!s->sync_event_source) {
- r = sd_event_add_time(
- s->event,
- &s->sync_event_source,
- CLOCK_MONOTONIC,
- when, 0,
- server_dispatch_sync, s);
- if (r < 0)
- return r;
-
- r = sd_event_source_set_priority(s->sync_event_source, SD_EVENT_PRIORITY_IMPORTANT);
- } else {
- r = sd_event_source_set_time(s->sync_event_source, when);
- if (r < 0)
- return r;
-
- r = sd_event_source_set_enabled(s->sync_event_source, SD_EVENT_ONESHOT);
- }
- if (r < 0)
- return r;
-
- s->sync_scheduled = true;
- }
-
- return 0;
-}
-
-static int dispatch_hostname_change(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
- Server *s = userdata;
-
- assert(s);
-
- server_cache_hostname(s);
- return 0;
-}
-
-static int server_open_hostname(Server *s) {
- int r;
-
- assert(s);
-
- s->hostname_fd = open("/proc/sys/kernel/hostname", O_RDONLY|O_CLOEXEC|O_NDELAY|O_NOCTTY);
- if (s->hostname_fd < 0)
- return log_error_errno(errno, "Failed to open /proc/sys/kernel/hostname: %m");
-
- r = sd_event_add_io(s->event, &s->hostname_event_source, s->hostname_fd, 0, dispatch_hostname_change, s);
- if (r < 0) {
- /* kernels prior to 3.2 don't support polling this file. Ignore
- * the failure. */
- if (r == -EPERM) {
- log_warning("Failed to register hostname fd in event loop: %s. Ignoring.",
- strerror(-r));
- s->hostname_fd = safe_close(s->hostname_fd);
- return 0;
- }
-
- return log_error_errno(r, "Failed to register hostname fd in event loop: %m");
- }
-
- r = sd_event_source_set_priority(s->hostname_event_source, SD_EVENT_PRIORITY_IMPORTANT-10);
- if (r < 0)
- return log_error_errno(r, "Failed to adjust priority of host name event source: %m");
-
- return 0;
-}
-
-int server_init(Server *s) {
- _cleanup_fdset_free_ FDSet *fds = NULL;
- int n, r, fd;
-
- assert(s);
-
- zero(*s);
- s->syslog_fd = s->native_fd = s->stdout_fd = s->dev_kmsg_fd = s->audit_fd = s->hostname_fd = -1;
- s->compress = true;
- s->seal = true;
-
- s->sync_interval_usec = DEFAULT_SYNC_INTERVAL_USEC;
- s->sync_scheduled = false;
-
- s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL;
- s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST;
-
- s->forward_to_wall = true;
-
- s->max_file_usec = DEFAULT_MAX_FILE_USEC;
-
- s->max_level_store = LOG_DEBUG;
- s->max_level_syslog = LOG_DEBUG;
- s->max_level_kmsg = LOG_NOTICE;
- s->max_level_console = LOG_INFO;
- s->max_level_wall = LOG_EMERG;
-
- memset(&s->system_metrics, 0xFF, sizeof(s->system_metrics));
- memset(&s->runtime_metrics, 0xFF, sizeof(s->runtime_metrics));
-
- server_parse_config_file(s);
- server_parse_proc_cmdline(s);
- if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) {
- log_debug("Setting both rate limit interval and burst from "USEC_FMT",%u to 0,0",
- s->rate_limit_interval, s->rate_limit_burst);
- s->rate_limit_interval = s->rate_limit_burst = 0;
- }
-
- mkdir_p("/run/systemd/journal", 0755);
-
- s->user_journals = ordered_hashmap_new(NULL);
- if (!s->user_journals)
- return log_oom();
-
- s->mmap = mmap_cache_new();
- if (!s->mmap)
- return log_oom();
-
- r = sd_event_default(&s->event);
- if (r < 0)
- return log_error_errno(r, "Failed to create event loop: %m");
-
- sd_event_set_watchdog(s->event, true);
-
- n = sd_listen_fds(true);
- if (n < 0)
- return log_error_errno(n, "Failed to read listening file descriptors from environment: %m");
-
- for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd++) {
-
- if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/socket", 0) > 0) {
-
- if (s->native_fd >= 0) {
- log_error("Too many native sockets passed.");
- return -EINVAL;
- }
-
- s->native_fd = fd;
-
- } else if (sd_is_socket_unix(fd, SOCK_STREAM, 1, "/run/systemd/journal/stdout", 0) > 0) {
-
- if (s->stdout_fd >= 0) {
- log_error("Too many stdout sockets passed.");
- return -EINVAL;
- }
-
- s->stdout_fd = fd;
-
- } else if (sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/dev/log", 0) > 0 ||
- sd_is_socket_unix(fd, SOCK_DGRAM, -1, "/run/systemd/journal/dev-log", 0) > 0) {
-
- if (s->syslog_fd >= 0) {
- log_error("Too many /dev/log sockets passed.");
- return -EINVAL;
- }
-
- s->syslog_fd = fd;
-
- } else if (sd_is_socket(fd, AF_NETLINK, SOCK_RAW, -1) > 0) {
-
- if (s->audit_fd >= 0) {
- log_error("Too many audit sockets passed.");
- return -EINVAL;
- }
-
- s->audit_fd = fd;
-
- } else {
-
- if (!fds) {
- fds = fdset_new();
- if (!fds)
- return log_oom();
- }
-
- r = fdset_put(fds, fd);
- if (r < 0)
- return log_oom();
- }
- }
-
- r = server_open_stdout_socket(s, fds);
- if (r < 0)
- return r;
-
- if (fdset_size(fds) > 0) {
- log_warning("%u unknown file descriptors passed, closing.", fdset_size(fds));
- fds = fdset_free(fds);
- }
-
- r = server_open_syslog_socket(s);
- if (r < 0)
- return r;
-
- r = server_open_native_socket(s);
- if (r < 0)
- return r;
-
- r = server_open_dev_kmsg(s);
- if (r < 0)
- return r;
-
- r = server_open_audit(s);
- if (r < 0)
- return r;
-
- r = server_open_kernel_seqnum(s);
- if (r < 0)
- return r;
-
- r = server_open_hostname(s);
- if (r < 0)
- return r;
-
- r = setup_signals(s);
- if (r < 0)
- return r;
-
- s->udev = udev_new();
- if (!s->udev)
- return -ENOMEM;
-
- s->rate_limit = journal_rate_limit_new(s->rate_limit_interval, s->rate_limit_burst);
- if (!s->rate_limit)
- return -ENOMEM;
-
- r = cg_get_root_path(&s->cgroup_root);
- if (r < 0)
- return r;
-
- server_cache_hostname(s);
- server_cache_boot_id(s);
- server_cache_machine_id(s);
-
- r = system_journal_open(s, false);
- if (r < 0)
- return r;
-
- return 0;
-}
-
-void server_maybe_append_tags(Server *s) {
-#ifdef HAVE_GCRYPT
- JournalFile *f;
- Iterator i;
- usec_t n;
-
- n = now(CLOCK_REALTIME);
-
- if (s->system_journal)
- journal_file_maybe_append_tag(s->system_journal, n);
-
- ORDERED_HASHMAP_FOREACH(f, s->user_journals, i)
- journal_file_maybe_append_tag(f, n);
-#endif
-}
-
-void server_done(Server *s) {
- JournalFile *f;
- assert(s);
-
- while (s->stdout_streams)
- stdout_stream_free(s->stdout_streams);
-
- if (s->system_journal)
- journal_file_close(s->system_journal);
-
- if (s->runtime_journal)
- journal_file_close(s->runtime_journal);
-
- while ((f = ordered_hashmap_steal_first(s->user_journals)))
- journal_file_close(f);
-
- ordered_hashmap_free(s->user_journals);
-
- sd_event_source_unref(s->syslog_event_source);
- sd_event_source_unref(s->native_event_source);
- sd_event_source_unref(s->stdout_event_source);
- sd_event_source_unref(s->dev_kmsg_event_source);
- sd_event_source_unref(s->audit_event_source);
- sd_event_source_unref(s->sync_event_source);
- sd_event_source_unref(s->sigusr1_event_source);
- sd_event_source_unref(s->sigusr2_event_source);
- sd_event_source_unref(s->sigterm_event_source);
- sd_event_source_unref(s->sigint_event_source);
- sd_event_source_unref(s->hostname_event_source);
- sd_event_unref(s->event);
-
- safe_close(s->syslog_fd);
- safe_close(s->native_fd);
- safe_close(s->stdout_fd);
- safe_close(s->dev_kmsg_fd);
- safe_close(s->audit_fd);
- safe_close(s->hostname_fd);
-
- if (s->rate_limit)
- journal_rate_limit_free(s->rate_limit);
-
- if (s->kernel_seqnum)
- munmap(s->kernel_seqnum, sizeof(uint64_t));
-
- free(s->buffer);
- free(s->tty_path);
- free(s->cgroup_root);
- free(s->hostname_field);
-
- if (s->mmap)
- mmap_cache_unref(s->mmap);
-
- if (s->udev)
- udev_unref(s->udev);
-}
~ianmdlvl / elogind.git / blobdiff