2012-11-12 17:29:07 +01:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <sys/signalfd.h>
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#include <sys/ioctl.h>
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#include <linux/sockios.h>
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#include <sys/statvfs.h>
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#include <sys/mman.h>
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#include <libudev.h>
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#include <systemd/sd-journal.h>
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#include <systemd/sd-messages.h>
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#include <systemd/sd-daemon.h>
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#ifdef HAVE_LOGIND
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#include <systemd/sd-login.h>
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#endif
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2013-02-14 12:26:13 +01:00
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#include "fileio.h"
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2012-11-12 17:29:07 +01:00
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#include "mkdir.h"
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#include "hashmap.h"
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#include "journal-file.h"
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#include "socket-util.h"
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#include "cgroup-util.h"
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#include "list.h"
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#include "virt.h"
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#include "missing.h"
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#include "conf-parser.h"
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#include "journal-internal.h"
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#include "journal-vacuum.h"
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#include "journal-authenticate.h"
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#include "journald-server.h"
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#include "journald-rate-limit.h"
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#include "journald-kmsg.h"
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#include "journald-syslog.h"
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#include "journald-stream.h"
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#include "journald-console.h"
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#include "journald-native.h"
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#ifdef HAVE_ACL
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#include <sys/acl.h>
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#include <acl/libacl.h>
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#include "acl-util.h"
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#endif
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#ifdef HAVE_SELINUX
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#include <selinux/selinux.h>
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#endif
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#define USER_JOURNALS_MAX 1024
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#define DEFAULT_RATE_LIMIT_INTERVAL (10*USEC_PER_SEC)
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#define DEFAULT_RATE_LIMIT_BURST 200
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#define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC)
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static const char* const storage_table[] = {
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[STORAGE_AUTO] = "auto",
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[STORAGE_VOLATILE] = "volatile",
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[STORAGE_PERSISTENT] = "persistent",
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[STORAGE_NONE] = "none"
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};
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DEFINE_STRING_TABLE_LOOKUP(storage, Storage);
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DEFINE_CONFIG_PARSE_ENUM(config_parse_storage, storage, Storage, "Failed to parse storage setting");
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static const char* const split_mode_table[] = {
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[SPLIT_NONE] = "none",
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[SPLIT_UID] = "uid",
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[SPLIT_LOGIN] = "login"
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};
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DEFINE_STRING_TABLE_LOOKUP(split_mode, SplitMode);
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DEFINE_CONFIG_PARSE_ENUM(config_parse_split_mode, split_mode, SplitMode, "Failed to parse split mode setting");
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static uint64_t available_space(Server *s) {
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2013-01-10 01:14:32 +01:00
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char ids[33];
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char _cleanup_free_ *p = NULL;
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2012-11-12 17:29:07 +01:00
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const char *f;
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sd_id128_t machine;
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struct statvfs ss;
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uint64_t sum = 0, avail = 0, ss_avail = 0;
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int r;
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2013-01-10 01:14:32 +01:00
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DIR _cleanup_closedir_ *d = NULL;
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2012-11-12 17:29:07 +01:00
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usec_t ts;
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JournalMetrics *m;
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ts = now(CLOCK_MONOTONIC);
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if (s->cached_available_space_timestamp + RECHECK_AVAILABLE_SPACE_USEC > ts)
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return s->cached_available_space;
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r = sd_id128_get_machine(&machine);
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if (r < 0)
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return 0;
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if (s->system_journal) {
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f = "/var/log/journal/";
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m = &s->system_metrics;
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} else {
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f = "/run/log/journal/";
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m = &s->runtime_metrics;
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}
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assert(m);
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p = strappend(f, sd_id128_to_string(machine, ids));
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if (!p)
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return 0;
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d = opendir(p);
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if (!d)
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return 0;
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if (fstatvfs(dirfd(d), &ss) < 0)
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2013-01-10 01:14:32 +01:00
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return 0;
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2012-11-12 17:29:07 +01:00
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for (;;) {
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struct stat st;
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struct dirent *de;
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union dirent_storage buf;
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r = readdir_r(d, &buf.de, &de);
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if (r != 0)
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break;
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if (!de)
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break;
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if (!endswith(de->d_name, ".journal") &&
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!endswith(de->d_name, ".journal~"))
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continue;
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if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0)
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continue;
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if (!S_ISREG(st.st_mode))
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continue;
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sum += (uint64_t) st.st_blocks * 512UL;
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}
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avail = sum >= m->max_use ? 0 : m->max_use - sum;
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ss_avail = ss.f_bsize * ss.f_bavail;
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ss_avail = ss_avail < m->keep_free ? 0 : ss_avail - m->keep_free;
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if (ss_avail < avail)
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avail = ss_avail;
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s->cached_available_space = avail;
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s->cached_available_space_timestamp = ts;
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return avail;
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}
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static void server_read_file_gid(Server *s) {
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const char *adm = "adm";
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int r;
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assert(s);
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if (s->file_gid_valid)
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return;
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r = get_group_creds(&adm, &s->file_gid);
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if (r < 0)
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log_warning("Failed to resolve 'adm' group: %s", strerror(-r));
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/* if we couldn't read the gid, then it will be 0, but that's
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* fine and we shouldn't try to resolve the group again, so
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* let's just pretend it worked right-away. */
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s->file_gid_valid = true;
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}
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void server_fix_perms(Server *s, JournalFile *f, uid_t uid) {
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int r;
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#ifdef HAVE_ACL
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acl_t acl;
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acl_entry_t entry;
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acl_permset_t permset;
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#endif
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assert(f);
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server_read_file_gid(s);
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r = fchmod_and_fchown(f->fd, 0640, 0, s->file_gid);
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if (r < 0)
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log_warning("Failed to fix access mode/rights on %s, ignoring: %s", f->path, strerror(-r));
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#ifdef HAVE_ACL
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if (uid <= 0)
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return;
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acl = acl_get_fd(f->fd);
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if (!acl) {
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log_warning("Failed to read ACL on %s, ignoring: %m", f->path);
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return;
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}
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r = acl_find_uid(acl, uid, &entry);
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if (r <= 0) {
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if (acl_create_entry(&acl, &entry) < 0 ||
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acl_set_tag_type(entry, ACL_USER) < 0 ||
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acl_set_qualifier(entry, &uid) < 0) {
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log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
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goto finish;
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}
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}
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if (acl_get_permset(entry, &permset) < 0 ||
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acl_add_perm(permset, ACL_READ) < 0 ||
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acl_calc_mask(&acl) < 0) {
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log_warning("Failed to patch ACL on %s, ignoring: %m", f->path);
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goto finish;
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}
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if (acl_set_fd(f->fd, acl) < 0)
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log_warning("Failed to set ACL on %s, ignoring: %m", f->path);
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finish:
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acl_free(acl);
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#endif
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}
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static JournalFile* find_journal(Server *s, uid_t uid) {
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char *p;
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int r;
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JournalFile *f;
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sd_id128_t machine;
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assert(s);
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/* We split up user logs only on /var, not on /run. If the
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* runtime file is open, we write to it exclusively, in order
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* to guarantee proper order as soon as we flush /run to
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* /var and close the runtime file. */
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if (s->runtime_journal)
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return s->runtime_journal;
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if (uid <= 0)
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return s->system_journal;
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r = sd_id128_get_machine(&machine);
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if (r < 0)
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return s->system_journal;
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f = hashmap_get(s->user_journals, UINT32_TO_PTR(uid));
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if (f)
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return f;
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if (asprintf(&p, "/var/log/journal/" SD_ID128_FORMAT_STR "/user-%lu.journal",
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SD_ID128_FORMAT_VAL(machine), (unsigned long) uid) < 0)
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return s->system_journal;
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while (hashmap_size(s->user_journals) >= USER_JOURNALS_MAX) {
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/* Too many open? Then let's close one */
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f = hashmap_steal_first(s->user_journals);
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assert(f);
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journal_file_close(f);
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}
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r = journal_file_open_reliably(p, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, s->system_journal, &f);
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free(p);
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if (r < 0)
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return s->system_journal;
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server_fix_perms(s, f, uid);
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r = hashmap_put(s->user_journals, UINT32_TO_PTR(uid), f);
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if (r < 0) {
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journal_file_close(f);
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return s->system_journal;
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}
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return f;
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}
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void server_rotate(Server *s) {
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JournalFile *f;
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void *k;
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Iterator i;
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int r;
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log_debug("Rotating...");
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if (s->runtime_journal) {
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r = journal_file_rotate(&s->runtime_journal, s->compress, false);
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if (r < 0)
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if (s->runtime_journal)
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log_error("Failed to rotate %s: %s", s->runtime_journal->path, strerror(-r));
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else
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log_error("Failed to create new runtime journal: %s", strerror(-r));
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else
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server_fix_perms(s, s->runtime_journal, 0);
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}
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if (s->system_journal) {
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r = journal_file_rotate(&s->system_journal, s->compress, s->seal);
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if (r < 0)
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if (s->system_journal)
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log_error("Failed to rotate %s: %s", s->system_journal->path, strerror(-r));
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else
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log_error("Failed to create new system journal: %s", strerror(-r));
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else
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server_fix_perms(s, s->system_journal, 0);
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}
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HASHMAP_FOREACH_KEY(f, k, s->user_journals, i) {
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r = journal_file_rotate(&f, s->compress, s->seal);
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if (r < 0)
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2012-11-20 00:19:27 +01:00
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if (f)
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2012-11-12 17:29:07 +01:00
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log_error("Failed to rotate %s: %s", f->path, strerror(-r));
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else
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log_error("Failed to create user journal: %s", strerror(-r));
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else {
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hashmap_replace(s->user_journals, k, f);
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server_fix_perms(s, f, PTR_TO_UINT32(k));
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}
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}
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}
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void server_vacuum(Server *s) {
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char *p;
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char ids[33];
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sd_id128_t machine;
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int r;
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log_debug("Vacuuming...");
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s->oldest_file_usec = 0;
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r = sd_id128_get_machine(&machine);
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if (r < 0) {
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log_error("Failed to get machine ID: %s", strerror(-r));
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return;
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}
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sd_id128_to_string(machine, ids);
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if (s->system_journal) {
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p = strappend("/var/log/journal/", ids);
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if (!p) {
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log_oom();
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return;
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}
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r = journal_directory_vacuum(p, s->system_metrics.max_use, s->system_metrics.keep_free, s->max_retention_usec, &s->oldest_file_usec);
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if (r < 0 && r != -ENOENT)
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|
|
log_error("Failed to vacuum %s: %s", p, strerror(-r));
|
|
|
|
free(p);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (s->runtime_journal) {
|
|
|
|
p = strappend("/run/log/journal/", ids);
|
|
|
|
if (!p) {
|
|
|
|
log_oom();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
r = journal_directory_vacuum(p, s->runtime_metrics.max_use, s->runtime_metrics.keep_free, s->max_retention_usec, &s->oldest_file_usec);
|
|
|
|
if (r < 0 && r != -ENOENT)
|
|
|
|
log_error("Failed to vacuum %s: %s", p, strerror(-r));
|
|
|
|
free(p);
|
|
|
|
}
|
|
|
|
|
|
|
|
s->cached_available_space_timestamp = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static char *shortened_cgroup_path(pid_t pid) {
|
|
|
|
int r;
|
2013-01-10 01:14:32 +01:00
|
|
|
char _cleanup_free_ *process_path = NULL, *init_path = NULL;
|
|
|
|
char *path;
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
assert(pid > 0);
|
|
|
|
|
|
|
|
r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &process_path);
|
|
|
|
if (r < 0)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &init_path);
|
2013-01-10 01:14:32 +01:00
|
|
|
if (r < 0)
|
2012-11-12 17:29:07 +01:00
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if (endswith(init_path, "/system"))
|
|
|
|
init_path[strlen(init_path) - 7] = 0;
|
|
|
|
else if (streq(init_path, "/"))
|
|
|
|
init_path[0] = 0;
|
|
|
|
|
|
|
|
if (startswith(process_path, init_path)) {
|
2013-01-10 01:14:32 +01:00
|
|
|
path = strdup(process_path + strlen(init_path));
|
2012-11-12 17:29:07 +01:00
|
|
|
} else {
|
|
|
|
path = process_path;
|
|
|
|
process_path = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return path;
|
|
|
|
}
|
|
|
|
|
|
|
|
bool shall_try_append_again(JournalFile *f, int r) {
|
|
|
|
|
|
|
|
/* -E2BIG Hit configured limit
|
|
|
|
-EFBIG Hit fs limit
|
|
|
|
-EDQUOT Quota limit hit
|
|
|
|
-ENOSPC Disk full
|
|
|
|
-EHOSTDOWN Other machine
|
|
|
|
-EBUSY Unclean shutdown
|
|
|
|
-EPROTONOSUPPORT Unsupported feature
|
|
|
|
-EBADMSG Corrupted
|
|
|
|
-ENODATA Truncated
|
|
|
|
-ESHUTDOWN Already archived */
|
|
|
|
|
|
|
|
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
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void write_to_journal(Server *s, uid_t uid, struct iovec *iovec, unsigned n) {
|
|
|
|
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)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (vacuumed || !shall_try_append_again(f, r)) {
|
|
|
|
log_error("Failed to write entry, ignoring: %s", strerror(-r));
|
|
|
|
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("Failed to write entry, ignoring: %s", strerror(-r));
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dispatch_message_real(
|
|
|
|
Server *s,
|
|
|
|
struct iovec *iovec, unsigned n, unsigned m,
|
|
|
|
struct ucred *ucred,
|
|
|
|
struct timeval *tv,
|
|
|
|
const char *label, size_t label_len,
|
|
|
|
const char *unit_id) {
|
|
|
|
|
2013-01-10 01:14:32 +01:00
|
|
|
char _cleanup_free_ *pid = NULL, *uid = NULL, *gid = NULL,
|
2012-11-12 17:29:07 +01:00
|
|
|
*source_time = NULL, *boot_id = NULL, *machine_id = NULL,
|
|
|
|
*comm = NULL, *cmdline = NULL, *hostname = NULL,
|
|
|
|
*audit_session = NULL, *audit_loginuid = NULL,
|
|
|
|
*exe = NULL, *cgroup = NULL, *session = NULL,
|
|
|
|
*owner_uid = NULL, *unit = NULL, *selinux_context = NULL;
|
|
|
|
|
|
|
|
char idbuf[33];
|
|
|
|
sd_id128_t id;
|
|
|
|
int r;
|
|
|
|
char *t;
|
2013-03-05 14:23:22 +01:00
|
|
|
uid_t loginuid = 0, realuid = 0, owner = 0, journal_uid;
|
|
|
|
bool loginuid_valid = false, owner_valid = false;
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
assert(s);
|
|
|
|
assert(iovec);
|
|
|
|
assert(n > 0);
|
|
|
|
assert(n + N_IOVEC_META_FIELDS <= m);
|
|
|
|
|
|
|
|
if (ucred) {
|
|
|
|
uint32_t audit;
|
|
|
|
|
|
|
|
realuid = ucred->uid;
|
|
|
|
|
|
|
|
if (asprintf(&pid, "_PID=%lu", (unsigned long) ucred->pid) >= 0)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], pid);
|
|
|
|
|
|
|
|
if (asprintf(&uid, "_UID=%lu", (unsigned long) ucred->uid) >= 0)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], uid);
|
|
|
|
|
|
|
|
if (asprintf(&gid, "_GID=%lu", (unsigned long) ucred->gid) >= 0)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], gid);
|
|
|
|
|
|
|
|
r = get_process_comm(ucred->pid, &t);
|
|
|
|
if (r >= 0) {
|
|
|
|
comm = strappend("_COMM=", t);
|
|
|
|
free(t);
|
|
|
|
|
|
|
|
if (comm)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], comm);
|
|
|
|
}
|
|
|
|
|
|
|
|
r = get_process_exe(ucred->pid, &t);
|
|
|
|
if (r >= 0) {
|
|
|
|
exe = strappend("_EXE=", t);
|
|
|
|
free(t);
|
|
|
|
|
|
|
|
if (exe)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], exe);
|
|
|
|
}
|
|
|
|
|
2013-01-14 18:16:50 +01:00
|
|
|
r = get_process_cmdline(ucred->pid, 0, false, &t);
|
2012-11-12 17:29:07 +01:00
|
|
|
if (r >= 0) {
|
|
|
|
cmdline = strappend("_CMDLINE=", t);
|
|
|
|
free(t);
|
|
|
|
|
|
|
|
if (cmdline)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], cmdline);
|
|
|
|
}
|
|
|
|
|
|
|
|
r = audit_session_from_pid(ucred->pid, &audit);
|
|
|
|
if (r >= 0)
|
|
|
|
if (asprintf(&audit_session, "_AUDIT_SESSION=%lu", (unsigned long) audit) >= 0)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], audit_session);
|
|
|
|
|
|
|
|
r = audit_loginuid_from_pid(ucred->pid, &loginuid);
|
2013-02-12 18:24:30 +01:00
|
|
|
if (r >= 0) {
|
|
|
|
loginuid_valid = true;
|
2012-11-12 17:29:07 +01:00
|
|
|
if (asprintf(&audit_loginuid, "_AUDIT_LOGINUID=%lu", (unsigned long) loginuid) >= 0)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], audit_loginuid);
|
2013-02-12 18:24:30 +01:00
|
|
|
}
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
t = shortened_cgroup_path(ucred->pid);
|
|
|
|
if (t) {
|
|
|
|
cgroup = strappend("_SYSTEMD_CGROUP=", t);
|
|
|
|
free(t);
|
|
|
|
|
|
|
|
if (cgroup)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], cgroup);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef HAVE_LOGIND
|
|
|
|
if (sd_pid_get_session(ucred->pid, &t) >= 0) {
|
|
|
|
session = strappend("_SYSTEMD_SESSION=", t);
|
|
|
|
free(t);
|
|
|
|
|
|
|
|
if (session)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], session);
|
|
|
|
}
|
|
|
|
|
2013-03-05 14:23:22 +01:00
|
|
|
if (sd_pid_get_owner_uid(ucred->uid, &owner) >= 0) {
|
|
|
|
owner_valid = true;
|
2012-11-12 17:29:07 +01:00
|
|
|
if (asprintf(&owner_uid, "_SYSTEMD_OWNER_UID=%lu", (unsigned long) owner) >= 0)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], owner_uid);
|
2013-03-05 14:23:22 +01:00
|
|
|
}
|
2012-11-12 17:29:07 +01:00
|
|
|
#endif
|
|
|
|
|
|
|
|
if (cg_pid_get_unit(ucred->pid, &t) >= 0) {
|
|
|
|
unit = strappend("_SYSTEMD_UNIT=", t);
|
|
|
|
free(t);
|
2013-01-17 18:55:05 +01:00
|
|
|
} else if (cg_pid_get_user_unit(ucred->pid, &t) >= 0) {
|
|
|
|
unit = strappend("_SYSTEMD_USER_UNIT=", t);
|
|
|
|
free(t);
|
|
|
|
} else if (unit_id) {
|
|
|
|
if (session)
|
|
|
|
unit = strappend("_SYSTEMD_USER_UNIT=", unit_id);
|
|
|
|
else
|
|
|
|
unit = strappend("_SYSTEMD_UNIT=", unit_id);
|
|
|
|
}
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
if (unit)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], unit);
|
|
|
|
|
|
|
|
#ifdef HAVE_SELINUX
|
|
|
|
if (label) {
|
|
|
|
selinux_context = malloc(sizeof("_SELINUX_CONTEXT=") + label_len);
|
|
|
|
if (selinux_context) {
|
|
|
|
memcpy(selinux_context, "_SELINUX_CONTEXT=", sizeof("_SELINUX_CONTEXT=")-1);
|
|
|
|
memcpy(selinux_context+sizeof("_SELINUX_CONTEXT=")-1, label, label_len);
|
|
|
|
selinux_context[sizeof("_SELINUX_CONTEXT=")-1+label_len] = 0;
|
|
|
|
IOVEC_SET_STRING(iovec[n++], selinux_context);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
security_context_t con;
|
|
|
|
|
|
|
|
if (getpidcon(ucred->pid, &con) >= 0) {
|
|
|
|
selinux_context = strappend("_SELINUX_CONTEXT=", con);
|
|
|
|
if (selinux_context)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], selinux_context);
|
|
|
|
|
|
|
|
freecon(con);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
if (tv) {
|
|
|
|
if (asprintf(&source_time, "_SOURCE_REALTIME_TIMESTAMP=%llu",
|
|
|
|
(unsigned long long) timeval_load(tv)) >= 0)
|
|
|
|
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. */
|
|
|
|
r = sd_id128_get_boot(&id);
|
|
|
|
if (r >= 0)
|
|
|
|
if (asprintf(&boot_id, "_BOOT_ID=%s", sd_id128_to_string(id, idbuf)) >= 0)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], boot_id);
|
|
|
|
|
|
|
|
r = sd_id128_get_machine(&id);
|
|
|
|
if (r >= 0)
|
|
|
|
if (asprintf(&machine_id, "_MACHINE_ID=%s", sd_id128_to_string(id, idbuf)) >= 0)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], machine_id);
|
|
|
|
|
|
|
|
t = gethostname_malloc();
|
|
|
|
if (t) {
|
|
|
|
hostname = strappend("_HOSTNAME=", t);
|
|
|
|
free(t);
|
|
|
|
if (hostname)
|
|
|
|
IOVEC_SET_STRING(iovec[n++], hostname);
|
|
|
|
}
|
|
|
|
|
|
|
|
assert(n <= m);
|
|
|
|
|
2013-03-04 15:17:45 +01:00
|
|
|
if (s->split_mode == SPLIT_UID && realuid > 0)
|
2013-02-12 18:24:30 +01:00
|
|
|
journal_uid = realuid;
|
2013-03-05 14:23:22 +01:00
|
|
|
else if (s->split_mode == SPLIT_LOGIN && owner_valid && owner > 0)
|
|
|
|
journal_uid = owner;
|
|
|
|
else if (s->split_mode == SPLIT_LOGIN && loginuid_valid && loginuid > 0)
|
2013-02-12 18:24:30 +01:00
|
|
|
journal_uid = loginuid;
|
2013-03-04 15:17:45 +01:00
|
|
|
else
|
|
|
|
journal_uid = 0;
|
2013-02-12 18:24:30 +01:00
|
|
|
|
|
|
|
write_to_journal(s, journal_uid, iovec, n);
|
2012-11-12 17:29:07 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
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);
|
|
|
|
char_array_0(buffer);
|
|
|
|
IOVEC_SET_STRING(iovec[n++], buffer);
|
|
|
|
|
|
|
|
if (!sd_id128_equal(message_id, SD_ID128_NULL)) {
|
|
|
|
snprintf(mid, sizeof(mid), MESSAGE_ID(message_id));
|
|
|
|
char_array_0(mid);
|
|
|
|
IOVEC_SET_STRING(iovec[n++], mid);
|
|
|
|
}
|
|
|
|
|
|
|
|
zero(ucred);
|
|
|
|
ucred.pid = getpid();
|
|
|
|
ucred.uid = getuid();
|
|
|
|
ucred.gid = getgid();
|
|
|
|
|
|
|
|
dispatch_message_real(s, iovec, n, ELEMENTSOF(iovec), &ucred, NULL, NULL, 0, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
void server_dispatch_message(
|
|
|
|
Server *s,
|
|
|
|
struct iovec *iovec, unsigned n, unsigned m,
|
|
|
|
struct ucred *ucred,
|
|
|
|
struct timeval *tv,
|
|
|
|
const char *label, size_t label_len,
|
|
|
|
const char *unit_id,
|
|
|
|
int priority) {
|
|
|
|
|
|
|
|
int rl;
|
2013-01-10 01:14:32 +01:00
|
|
|
char _cleanup_free_ *path = NULL;
|
|
|
|
char *c;
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
assert(s);
|
|
|
|
assert(iovec || n == 0);
|
|
|
|
|
|
|
|
if (n == 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (LOG_PRI(priority) > s->max_level_store)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (!ucred)
|
|
|
|
goto finish;
|
|
|
|
|
|
|
|
path = shortened_cgroup_path(ucred->pid);
|
|
|
|
if (!path)
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-01-10 01:14:32 +01:00
|
|
|
rl = journal_rate_limit_test(s->rate_limit, path,
|
|
|
|
priority & LOG_PRIMASK, available_space(s));
|
2012-11-12 17:29:07 +01:00
|
|
|
|
2013-01-10 01:14:32 +01:00
|
|
|
if (rl == 0)
|
2012-11-12 17:29:07 +01:00
|
|
|
return;
|
|
|
|
|
|
|
|
/* Write a suppression message if we suppressed something */
|
|
|
|
if (rl > 1)
|
2013-01-10 01:14:32 +01:00
|
|
|
server_driver_message(s, SD_MESSAGE_JOURNAL_DROPPED,
|
|
|
|
"Suppressed %u messages from %s", rl - 1, path);
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
finish:
|
|
|
|
dispatch_message_real(s, iovec, n, m, ucred, tv, label, label_len, unit_id);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int system_journal_open(Server *s) {
|
|
|
|
int r;
|
|
|
|
char *fn;
|
|
|
|
sd_id128_t machine;
|
|
|
|
char ids[33];
|
|
|
|
|
|
|
|
r = sd_id128_get_machine(&machine);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
sd_id128_to_string(machine, ids);
|
|
|
|
|
|
|
|
if (!s->system_journal &&
|
|
|
|
(s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) &&
|
|
|
|
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 = strappend("/var/log/journal/", ids);
|
|
|
|
if (!fn)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
(void) mkdir(fn, 0755);
|
|
|
|
free(fn);
|
|
|
|
|
|
|
|
fn = strjoin("/var/log/journal/", ids, "/system.journal", NULL);
|
|
|
|
if (!fn)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal);
|
|
|
|
free(fn);
|
|
|
|
|
|
|
|
if (r >= 0) {
|
|
|
|
char fb[FORMAT_BYTES_MAX];
|
|
|
|
|
|
|
|
server_fix_perms(s, s->system_journal, 0);
|
|
|
|
server_driver_message(s, SD_ID128_NULL, "Allowing system journal files to grow to %s.",
|
|
|
|
format_bytes(fb, sizeof(fb), s->system_metrics.max_use));
|
|
|
|
|
|
|
|
} else if (r < 0) {
|
|
|
|
|
|
|
|
if (r != -ENOENT && r != -EROFS)
|
|
|
|
log_warning("Failed to open system journal: %s", strerror(-r));
|
|
|
|
|
|
|
|
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("Failed to open runtime journal: %s", strerror(-r));
|
|
|
|
|
|
|
|
r = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
} else {
|
|
|
|
|
|
|
|
/* OK, we really need the runtime journal, so create
|
|
|
|
* it if necessary. */
|
|
|
|
|
|
|
|
(void) mkdir_parents(fn, 0755);
|
|
|
|
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) {
|
|
|
|
log_error("Failed to open runtime journal: %s", strerror(-r));
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (s->runtime_journal) {
|
|
|
|
char fb[FORMAT_BYTES_MAX];
|
|
|
|
|
|
|
|
server_fix_perms(s, s->runtime_journal, 0);
|
|
|
|
server_driver_message(s, SD_ID128_NULL, "Allowing runtime journal files to grow to %s.",
|
|
|
|
format_bytes(fb, sizeof(fb), s->runtime_metrics.max_use));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
int server_flush_to_var(Server *s) {
|
|
|
|
int r;
|
|
|
|
sd_id128_t machine;
|
|
|
|
sd_journal *j = NULL;
|
|
|
|
|
|
|
|
assert(s);
|
|
|
|
|
|
|
|
if (s->storage != STORAGE_AUTO &&
|
|
|
|
s->storage != STORAGE_PERSISTENT)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (!s->runtime_journal)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
system_journal_open(s);
|
|
|
|
|
|
|
|
if (!s->system_journal)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
log_debug("Flushing to /var...");
|
|
|
|
|
|
|
|
r = sd_id128_get_machine(&machine);
|
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to get machine id: %s", strerror(-r));
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
r = sd_journal_open(&j, SD_JOURNAL_RUNTIME_ONLY);
|
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to read runtime journal: %s", strerror(-r));
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2012-11-21 00:28:00 +01:00
|
|
|
sd_journal_set_data_threshold(j, 0);
|
|
|
|
|
2012-11-12 17:29:07 +01:00
|
|
|
SD_JOURNAL_FOREACH(j) {
|
|
|
|
Object *o = NULL;
|
|
|
|
JournalFile *f;
|
|
|
|
|
|
|
|
f = j->current_file;
|
|
|
|
assert(f && f->current_offset > 0);
|
|
|
|
|
|
|
|
r = journal_file_move_to_object(f, OBJECT_ENTRY, f->current_offset, &o);
|
|
|
|
if (r < 0) {
|
|
|
|
log_error("Can't read entry: %s", strerror(-r));
|
|
|
|
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("Can't write entry: %s", strerror(-r));
|
|
|
|
goto finish;
|
|
|
|
}
|
|
|
|
|
|
|
|
server_rotate(s);
|
|
|
|
server_vacuum(s);
|
|
|
|
|
|
|
|
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("Can't write entry: %s", strerror(-r));
|
|
|
|
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);
|
|
|
|
|
|
|
|
if (j)
|
|
|
|
sd_journal_close(j);
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
int process_event(Server *s, struct epoll_event *ev) {
|
|
|
|
assert(s);
|
|
|
|
assert(ev);
|
|
|
|
|
|
|
|
if (ev->data.fd == s->signal_fd) {
|
|
|
|
struct signalfd_siginfo sfsi;
|
|
|
|
ssize_t n;
|
|
|
|
|
|
|
|
if (ev->events != EPOLLIN) {
|
|
|
|
log_error("Got invalid event from epoll.");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
n = read(s->signal_fd, &sfsi, sizeof(sfsi));
|
|
|
|
if (n != sizeof(sfsi)) {
|
|
|
|
|
|
|
|
if (n >= 0)
|
|
|
|
return -EIO;
|
|
|
|
|
|
|
|
if (errno == EINTR || errno == EAGAIN)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
return -errno;
|
|
|
|
}
|
|
|
|
|
|
|
|
log_info("Received SIG%s", signal_to_string(sfsi.ssi_signo));
|
|
|
|
|
|
|
|
if (sfsi.ssi_signo == SIGUSR1) {
|
|
|
|
touch("/run/systemd/journal/flushed");
|
|
|
|
server_flush_to_var(s);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (sfsi.ssi_signo == SIGUSR2) {
|
|
|
|
server_rotate(s);
|
|
|
|
server_vacuum(s);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
} else if (ev->data.fd == s->dev_kmsg_fd) {
|
|
|
|
int r;
|
|
|
|
|
|
|
|
if (ev->events != EPOLLIN) {
|
|
|
|
log_error("Got invalid event from epoll.");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
r = server_read_dev_kmsg(s);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
} else if (ev->data.fd == s->native_fd ||
|
|
|
|
ev->data.fd == s->syslog_fd) {
|
|
|
|
|
|
|
|
if (ev->events != EPOLLIN) {
|
|
|
|
log_error("Got invalid event from epoll.");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
struct msghdr msghdr;
|
|
|
|
struct iovec iovec;
|
|
|
|
struct ucred *ucred = NULL;
|
|
|
|
struct timeval *tv = NULL;
|
|
|
|
struct cmsghdr *cmsg;
|
|
|
|
char *label = NULL;
|
|
|
|
size_t label_len = 0;
|
|
|
|
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;
|
|
|
|
ssize_t n;
|
|
|
|
int v;
|
|
|
|
int *fds = NULL;
|
|
|
|
unsigned n_fds = 0;
|
|
|
|
|
|
|
|
if (ioctl(ev->data.fd, SIOCINQ, &v) < 0) {
|
|
|
|
log_error("SIOCINQ failed: %m");
|
|
|
|
return -errno;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (s->buffer_size < (size_t) v) {
|
|
|
|
void *b;
|
|
|
|
size_t l;
|
|
|
|
|
|
|
|
l = MAX(LINE_MAX + (size_t) v, s->buffer_size * 2);
|
|
|
|
b = realloc(s->buffer, l+1);
|
|
|
|
|
|
|
|
if (!b) {
|
|
|
|
log_error("Couldn't increase buffer.");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
s->buffer_size = l;
|
|
|
|
s->buffer = b;
|
|
|
|
}
|
|
|
|
|
|
|
|
zero(iovec);
|
|
|
|
iovec.iov_base = s->buffer;
|
|
|
|
iovec.iov_len = s->buffer_size;
|
|
|
|
|
|
|
|
zero(control);
|
|
|
|
zero(msghdr);
|
|
|
|
msghdr.msg_iov = &iovec;
|
|
|
|
msghdr.msg_iovlen = 1;
|
|
|
|
msghdr.msg_control = &control;
|
|
|
|
msghdr.msg_controllen = sizeof(control);
|
|
|
|
|
|
|
|
n = recvmsg(ev->data.fd, &msghdr, MSG_DONTWAIT|MSG_CMSG_CLOEXEC);
|
|
|
|
if (n < 0) {
|
|
|
|
|
|
|
|
if (errno == EINTR || errno == EAGAIN)
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
log_error("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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ev->data.fd == s->syslog_fd) {
|
|
|
|
char *e;
|
|
|
|
|
|
|
|
if (n > 0 && n_fds == 0) {
|
|
|
|
e = memchr(s->buffer, '\n', n);
|
|
|
|
if (e)
|
|
|
|
*e = 0;
|
|
|
|
else
|
|
|
|
s->buffer[n] = 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 (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.");
|
|
|
|
}
|
|
|
|
|
|
|
|
close_many(fds, n_fds);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
} else if (ev->data.fd == s->stdout_fd) {
|
|
|
|
|
|
|
|
if (ev->events != EPOLLIN) {
|
|
|
|
log_error("Got invalid event from epoll.");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
stdout_stream_new(s);
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
StdoutStream *stream;
|
|
|
|
|
|
|
|
if ((ev->events|EPOLLIN|EPOLLHUP) != (EPOLLIN|EPOLLHUP)) {
|
|
|
|
log_error("Got invalid event from epoll.");
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If it is none of the well-known fds, it must be an
|
|
|
|
* stdout stream fd. Note that this is a bit ugly here
|
|
|
|
* (since we rely that none of the well-known fds
|
|
|
|
* could be interpreted as pointer), but nonetheless
|
|
|
|
* safe, since the well-known fds would never get an
|
|
|
|
* fd > 4096, i.e. beyond the first memory page */
|
|
|
|
|
|
|
|
stream = ev->data.ptr;
|
|
|
|
|
|
|
|
if (stdout_stream_process(stream) <= 0)
|
|
|
|
stdout_stream_free(stream);
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
log_error("Unknown event.");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int open_signalfd(Server *s) {
|
|
|
|
sigset_t mask;
|
|
|
|
struct epoll_event ev;
|
|
|
|
|
|
|
|
assert(s);
|
|
|
|
|
|
|
|
assert_se(sigemptyset(&mask) == 0);
|
|
|
|
sigset_add_many(&mask, SIGINT, SIGTERM, SIGUSR1, SIGUSR2, -1);
|
|
|
|
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
|
|
|
|
|
|
|
|
s->signal_fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
|
|
|
|
if (s->signal_fd < 0) {
|
|
|
|
log_error("signalfd(): %m");
|
|
|
|
return -errno;
|
|
|
|
}
|
|
|
|
|
|
|
|
zero(ev);
|
|
|
|
ev.events = EPOLLIN;
|
|
|
|
ev.data.fd = s->signal_fd;
|
|
|
|
|
|
|
|
if (epoll_ctl(s->epoll_fd, EPOLL_CTL_ADD, s->signal_fd, &ev) < 0) {
|
|
|
|
log_error("epoll_ctl(): %m");
|
|
|
|
return -errno;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int server_parse_proc_cmdline(Server *s) {
|
2013-01-10 01:14:32 +01:00
|
|
|
char _cleanup_free_ *line = NULL;
|
|
|
|
char *w, *state;
|
2012-11-12 17:29:07 +01:00
|
|
|
int r;
|
|
|
|
size_t l;
|
|
|
|
|
|
|
|
if (detect_container(NULL) > 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
r = read_one_line_file("/proc/cmdline", &line);
|
|
|
|
if (r < 0) {
|
|
|
|
log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
FOREACH_WORD_QUOTED(w, l, line, state) {
|
2013-01-10 01:14:32 +01:00
|
|
|
char _cleanup_free_ *word;
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
word = strndup(w, l);
|
2013-01-10 01:14:32 +01:00
|
|
|
if (!word)
|
|
|
|
return -ENOMEM;
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
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"))
|
|
|
|
log_warning("Invalid systemd.journald parameter. Ignoring.");
|
|
|
|
}
|
|
|
|
|
2013-01-10 01:14:32 +01:00
|
|
|
return 0;
|
2012-11-12 17:29:07 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
static int server_parse_config_file(Server *s) {
|
2013-01-10 01:14:32 +01:00
|
|
|
static const char *fn = "/etc/systemd/journald.conf";
|
|
|
|
FILE _cleanup_fclose_ *f = NULL;
|
2012-11-12 17:29:07 +01:00
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(s);
|
|
|
|
|
|
|
|
f = fopen(fn, "re");
|
|
|
|
if (!f) {
|
|
|
|
if (errno == ENOENT)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
log_warning("Failed to open configuration file %s: %m", fn);
|
|
|
|
return -errno;
|
|
|
|
}
|
|
|
|
|
2013-01-10 01:14:32 +01:00
|
|
|
r = config_parse(fn, f, "Journal\0", config_item_perf_lookup,
|
|
|
|
(void*) journald_gperf_lookup, false, s);
|
2012-11-12 17:29:07 +01:00
|
|
|
if (r < 0)
|
|
|
|
log_warning("Failed to parse configuration file: %s", strerror(-r));
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
int server_init(Server *s) {
|
|
|
|
int n, r, fd;
|
|
|
|
|
|
|
|
assert(s);
|
|
|
|
|
|
|
|
zero(*s);
|
|
|
|
s->syslog_fd = s->native_fd = s->stdout_fd = s->signal_fd = s->epoll_fd = s->dev_kmsg_fd = -1;
|
|
|
|
s->compress = true;
|
|
|
|
s->seal = true;
|
|
|
|
|
|
|
|
s->rate_limit_interval = DEFAULT_RATE_LIMIT_INTERVAL;
|
|
|
|
s->rate_limit_burst = DEFAULT_RATE_LIMIT_BURST;
|
|
|
|
|
|
|
|
s->forward_to_syslog = true;
|
|
|
|
|
|
|
|
s->max_level_store = LOG_DEBUG;
|
|
|
|
s->max_level_syslog = LOG_DEBUG;
|
|
|
|
s->max_level_kmsg = LOG_NOTICE;
|
|
|
|
s->max_level_console = LOG_INFO;
|
|
|
|
|
|
|
|
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);
|
2013-03-03 02:14:21 +01:00
|
|
|
if (!!s->rate_limit_interval ^ !!s->rate_limit_burst) {
|
|
|
|
log_debug("Setting both rate limit interval and burst from %llu,%u to 0,0",
|
|
|
|
(long long unsigned) s->rate_limit_interval,
|
|
|
|
s->rate_limit_burst);
|
|
|
|
s->rate_limit_interval = s->rate_limit_burst = 0;
|
|
|
|
}
|
2012-11-12 17:29:07 +01:00
|
|
|
|
|
|
|
mkdir_p("/run/systemd/journal", 0755);
|
|
|
|
|
|
|
|
s->user_journals = hashmap_new(trivial_hash_func, trivial_compare_func);
|
|
|
|
if (!s->user_journals)
|
|
|
|
return log_oom();
|
|
|
|
|
|
|
|
s->mmap = mmap_cache_new();
|
|
|
|
if (!s->mmap)
|
|
|
|
return log_oom();
|
|
|
|
|
|
|
|
s->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
|
|
|
|
if (s->epoll_fd < 0) {
|
|
|
|
log_error("Failed to create epoll object: %m");
|
|
|
|
return -errno;
|
|
|
|
}
|
|
|
|
|
|
|
|
n = sd_listen_fds(true);
|
|
|
|
if (n < 0) {
|
|
|
|
log_error("Failed to read listening file descriptors from environment: %s", strerror(-n));
|
|
|
|
return n;
|
|
|
|
}
|
|
|
|
|
|
|
|
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) {
|
|
|
|
|
|
|
|
if (s->syslog_fd >= 0) {
|
|
|
|
log_error("Too many /dev/log sockets passed.");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
s->syslog_fd = fd;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
log_error("Unknown socket passed.");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
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_stdout_socket(s);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
r = server_open_dev_kmsg(s);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
r = server_open_kernel_seqnum(s);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
r = open_signalfd(s);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
|
|
|
s->udev = udev_new();
|
|
|
|
if (!s->udev)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2013-03-03 02:14:21 +01:00
|
|
|
s->rate_limit = journal_rate_limit_new(s->rate_limit_interval,
|
|
|
|
s->rate_limit_burst);
|
2012-11-12 17:29:07 +01:00
|
|
|
if (!s->rate_limit)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
r = system_journal_open(s);
|
|
|
|
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);
|
|
|
|
|
|
|
|
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 = hashmap_steal_first(s->user_journals)))
|
|
|
|
journal_file_close(f);
|
|
|
|
|
|
|
|
hashmap_free(s->user_journals);
|
|
|
|
|
|
|
|
if (s->epoll_fd >= 0)
|
|
|
|
close_nointr_nofail(s->epoll_fd);
|
|
|
|
|
|
|
|
if (s->signal_fd >= 0)
|
|
|
|
close_nointr_nofail(s->signal_fd);
|
|
|
|
|
|
|
|
if (s->syslog_fd >= 0)
|
|
|
|
close_nointr_nofail(s->syslog_fd);
|
|
|
|
|
|
|
|
if (s->native_fd >= 0)
|
|
|
|
close_nointr_nofail(s->native_fd);
|
|
|
|
|
|
|
|
if (s->stdout_fd >= 0)
|
|
|
|
close_nointr_nofail(s->stdout_fd);
|
|
|
|
|
|
|
|
if (s->dev_kmsg_fd >= 0)
|
|
|
|
close_nointr_nofail(s->dev_kmsg_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);
|
|
|
|
|
|
|
|
if (s->mmap)
|
|
|
|
mmap_cache_unref(s->mmap);
|
|
|
|
|
|
|
|
if (s->udev)
|
|
|
|
udev_unref(s->udev);
|
|
|
|
}
|