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