/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** 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 <inttypes.h> #include <stdbool.h> #include <sys/epoll.h> #include <sys/types.h> #include <sys/socket.h> #include "sd-event.h" #include "journal-file.h" #include "hashmap.h" #include "util.h" #include "audit.h" #include "journald-rate-limit.h" #include "list.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, SPLIT_NONE, _SPLIT_MAX, _SPLIT_INVALID = -1 } SplitMode; typedef struct StdoutStream StdoutStream; typedef struct Server { int syslog_fd; int native_fd; int stdout_fd; int dev_kmsg_fd; int audit_fd; int hostname_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 *hostname_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; JournalMetrics runtime_metrics; JournalMetrics system_metrics; bool compress; bool seal; 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 cached_available_space; usec_t cached_available_space_timestamp; 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); 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; bool dev_kmsg_readable; uint64_t *kernel_seqnum; struct udev *udev; bool sync_scheduled; 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; } Server; #define N_IOVEC_META_FIELDS 20 #define N_IOVEC_KERNEL_FIELDS 64 #define N_IOVEC_UDEV_FIELDS 32 #define N_IOVEC_OBJECT_FIELDS 11 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); void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...) _printf_(3,4); /* gperf lookup function */ const struct ConfigPerfItem* journald_gperf_lookup(const char *key, unsigned length); 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); const char *storage_to_string(Storage s) _const_; Storage storage_from_string(const char *s) _pure_; 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); const char *split_mode_to_string(SplitMode s) _const_; SplitMode split_mode_from_string(const char *s) _pure_; void server_fix_perms(Server *s, JournalFile *f, uid_t uid); bool shall_try_append_again(JournalFile *f, int r); int server_init(Server *s); void server_done(Server *s); void server_sync(Server *s); void server_vacuum(Server *s); void server_rotate(Server *s); int server_schedule_sync(Server *s, int priority); int server_flush_to_var(Server *s); void server_maybe_append_tags(Server *s); int process_datagram(sd_event_source *es, int fd, uint32_t revents, void *userdata);