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/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
#include <stdbool.h>
#include <sys/types.h>
#include "sd-event.h"
typedef struct Server Server;
#include "conf-parser.h"
#include "hashmap.h"
#include "journal-file.h"
#include "journald-context.h"
#include "journald-rate-limit.h"
#include "journald-stream.h"
#include "list.h"
#include "prioq.h"
typedef enum Storage {
STORAGE_AUTO,
STORAGE_VOLATILE,
STORAGE_PERSISTENT,
STORAGE_NONE,
_STORAGE_MAX,
_STORAGE_INVALID = -1
} Storage;
typedef enum SplitMode {
SPLIT_UID,
SPLIT_LOGIN, /* deprecated */
SPLIT_NONE,
_SPLIT_MAX,
_SPLIT_INVALID = -1
} SplitMode;
typedef struct JournalCompressOptions {
bool enabled;
uint64_t threshold_bytes;
} JournalCompressOptions;
typedef struct JournalStorageSpace {
usec_t timestamp;
uint64_t available;
uint64_t limit;
uint64_t vfs_used; /* space used by journal files */
uint64_t vfs_available;
} JournalStorageSpace;
typedef struct JournalStorage {
const char *name;
char *path;
JournalMetrics metrics;
JournalStorageSpace space;
} JournalStorage;
struct Server {
int syslog_fd;
int native_fd;
int stdout_fd;
int dev_kmsg_fd;
int audit_fd;
int hostname_fd;
int notify_fd;
sd_event *event;
sd_event_source *syslog_event_source;
sd_event_source *native_event_source;
sd_event_source *stdout_event_source;
sd_event_source *dev_kmsg_event_source;
sd_event_source *audit_event_source;
sd_event_source *sync_event_source;
sd_event_source *sigusr1_event_source;
sd_event_source *sigusr2_event_source;
sd_event_source *sigterm_event_source;
sd_event_source *sigint_event_source;
sd_event_source *sigrtmin1_event_source;
sd_event_source *hostname_event_source;
sd_event_source *notify_event_source;
sd_event_source *watchdog_event_source;
JournalFile *runtime_journal;
JournalFile *system_journal;
OrderedHashmap *user_journals;
uint64_t seqnum;
char *buffer;
size_t buffer_size;
JournalRateLimit *rate_limit;
usec_t sync_interval_usec;
usec_t rate_limit_interval;
unsigned rate_limit_burst;
JournalStorage runtime_storage;
JournalStorage system_storage;
JournalCompressOptions compress;
bool seal;
bool read_kmsg;
bool forward_to_kmsg;
bool forward_to_syslog;
bool forward_to_console;
bool forward_to_wall;
unsigned n_forward_syslog_missed;
usec_t last_warn_forward_syslog_missed;
uint64_t var_available_timestamp;
usec_t max_retention_usec;
usec_t max_file_usec;
usec_t oldest_file_usec;
LIST_HEAD(StdoutStream, stdout_streams);
LIST_HEAD(StdoutStream, stdout_streams_notify_queue);
unsigned n_stdout_streams;
char *tty_path;
int max_level_store;
int max_level_syslog;
int max_level_kmsg;
int max_level_console;
int max_level_wall;
Storage storage;
SplitMode split_mode;
MMapCache *mmap;
Set *deferred_closes;
uint64_t *kernel_seqnum;
bool dev_kmsg_readable:1;
bool send_watchdog:1;
bool sent_notify_ready:1;
bool sync_scheduled:1;
char machine_id_field[sizeof("_MACHINE_ID=") + 32];
char boot_id_field[sizeof("_BOOT_ID=") + 32];
char *hostname_field;
/* Cached cgroup root, so that we don't have to query that all the time */
char *cgroup_root;
usec_t watchdog_usec;
usec_t last_realtime_clock;
size_t line_max;
/* Caching of client metadata */
Hashmap *client_contexts;
Prioq *client_contexts_lru;
usec_t last_cache_pid_flush;
ClientContext *my_context; /* the context of journald itself */
ClientContext *pid1_context; /* the context of PID 1 */
};
#define SERVER_MACHINE_ID(s) ((s)->machine_id_field + STRLEN("_MACHINE_ID="))
/* Extra fields for any log messages */
#define N_IOVEC_META_FIELDS 22
/* Extra fields for log messages that contain OBJECT_PID= (i.e. log about another process) */
#define N_IOVEC_OBJECT_FIELDS 18
/* Maximum number of fields we'll add in for driver (i.e. internal) messages */
#define N_IOVEC_PAYLOAD_FIELDS 16
/* kmsg: Maximum number of extra fields we'll import from the kernel's /dev/kmsg */
#define N_IOVEC_KERNEL_FIELDS 64
/* kmsg: Maximum number of extra fields we'll import from udev's devices */
#define N_IOVEC_UDEV_FIELDS 32
void server_dispatch_message(Server *s, struct iovec *iovec, size_t n, size_t m, ClientContext *c, const struct timeval *tv, int priority, pid_t object_pid);
void server_driver_message(Server *s, pid_t object_pid, const char *message_id, const char *format, ...) _sentinel_ _printf_(4,0);
/* gperf lookup function */
const struct ConfigPerfItem* journald_gperf_lookup(const char *key, GPERF_LEN_TYPE length);
CONFIG_PARSER_PROTOTYPE(config_parse_storage);
CONFIG_PARSER_PROTOTYPE(config_parse_line_max);
CONFIG_PARSER_PROTOTYPE(config_parse_compress);
const char *storage_to_string(Storage s) _const_;
Storage storage_from_string(const char *s) _pure_;
CONFIG_PARSER_PROTOTYPE(config_parse_split_mode);
const char *split_mode_to_string(SplitMode s) _const_;
SplitMode split_mode_from_string(const char *s) _pure_;
int server_init(Server *s);
void server_done(Server *s);
void server_sync(Server *s);
int server_vacuum(Server *s, bool verbose);
void server_rotate(Server *s);
int server_schedule_sync(Server *s, int priority);
int server_flush_to_var(Server *s, bool require_flag_file);
void server_maybe_append_tags(Server *s);
int server_process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata);
void server_space_usage_message(Server *s, JournalStorage *storage);
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