1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2011 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/epoll.h>
27 #include <sys/types.h>
28 #include <sys/socket.h>
31 #include "journal-file.h"
35 #include "journald-rate-limit.h"
38 typedef enum Storage {
47 typedef enum SplitMode {
55 typedef struct StdoutStream StdoutStream;
57 typedef struct Server {
67 sd_event_source *syslog_event_source;
68 sd_event_source *native_event_source;
69 sd_event_source *stdout_event_source;
70 sd_event_source *dev_kmsg_event_source;
71 sd_event_source *audit_event_source;
72 sd_event_source *sync_event_source;
73 sd_event_source *sigusr1_event_source;
74 sd_event_source *sigusr2_event_source;
75 sd_event_source *sigterm_event_source;
76 sd_event_source *sigint_event_source;
77 sd_event_source *hostname_event_source;
79 JournalFile *runtime_journal;
80 JournalFile *system_journal;
81 OrderedHashmap *user_journals;
88 JournalRateLimit *rate_limit;
89 usec_t sync_interval_usec;
90 usec_t rate_limit_interval;
91 unsigned rate_limit_burst;
93 JournalMetrics runtime_metrics;
94 JournalMetrics system_metrics;
100 bool forward_to_syslog;
101 bool forward_to_console;
102 bool forward_to_wall;
104 unsigned n_forward_syslog_missed;
105 usec_t last_warn_forward_syslog_missed;
107 uint64_t cached_available_space;
108 usec_t cached_available_space_timestamp;
110 uint64_t var_available_timestamp;
112 usec_t max_retention_usec;
113 usec_t max_file_usec;
114 usec_t oldest_file_usec;
116 LIST_HEAD(StdoutStream, stdout_streams);
117 unsigned n_stdout_streams;
122 int max_level_syslog;
124 int max_level_console;
128 SplitMode split_mode;
132 bool dev_kmsg_readable;
134 uint64_t *kernel_seqnum;
140 char machine_id_field[sizeof("_MACHINE_ID=") + 32];
141 char boot_id_field[sizeof("_BOOT_ID=") + 32];
142 char *hostname_field;
144 /* Cached cgroup root, so that we don't have to query that all the time */
148 #define N_IOVEC_META_FIELDS 20
149 #define N_IOVEC_KERNEL_FIELDS 64
150 #define N_IOVEC_UDEV_FIELDS 32
151 #define N_IOVEC_OBJECT_FIELDS 11
153 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);
154 void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) _printf_(3,4);
156 /* gperf lookup function */
157 const struct ConfigPerfItem* journald_gperf_lookup(const char *key, unsigned length);
159 int config_parse_storage(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
161 const char *storage_to_string(Storage s) _const_;
162 Storage storage_from_string(const char *s) _pure_;
164 int config_parse_split_mode(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
166 const char *split_mode_to_string(SplitMode s) _const_;
167 SplitMode split_mode_from_string(const char *s) _pure_;
169 void server_fix_perms(Server *s, JournalFile *f, uid_t uid);
170 int server_init(Server *s);
171 void server_done(Server *s);
172 void server_sync(Server *s);
173 void server_vacuum(Server *s);
174 void server_rotate(Server *s);
175 int server_schedule_sync(Server *s, int priority);
176 int server_flush_to_var(Server *s);
177 void server_maybe_append_tags(Server *s);
178 int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata);