src/journal/journald.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #pragma once
   4
   5 /***
   6   This file is part of systemd.
   7
   8   Copyright 2011 Lennart Poettering
   9
  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.
  14
  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.
  19
  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/>.
  22 ***/
  23
  24 #include <inttypes.h>
  25 #include <sys/types.h>
  26 #include <stdbool.h>
  27
  28 #include "journal-file.h"
  29 #include "hashmap.h"
  30 #include "util.h"
  31 #include "audit.h"
  32 #include "journald-rate-limit.h"
  33 #include "list.h"
  34
  35 typedef enum Storage {
  36         STORAGE_AUTO,
  37         STORAGE_VOLATILE,
  38         STORAGE_PERSISTENT,
  39         STORAGE_NONE,
  40         _STORAGE_MAX,
  41         _STORAGE_INVALID = -1
  42 } Storage;
  43
  44 typedef enum SplitMode {
  45         SPLIT_LOGIN,
  46         SPLIT_UID,
  47         SPLIT_NONE,
  48         _SPLIT_MAX,
  49         _SPLIT_INVALID = -1
  50 } SplitMode;
  51
  52 typedef struct StdoutStream StdoutStream;
  53
  54 typedef struct Server {
  55         int epoll_fd;
  56         int signal_fd;
  57         int syslog_fd;
  58         int native_fd;
  59         int stdout_fd;
  60         int dev_kmsg_fd;
  61
  62         JournalFile *runtime_journal;
  63         JournalFile *system_journal;
  64         Hashmap *user_journals;
  65
  66         uint64_t seqnum;
  67
  68         char *buffer;
  69         size_t buffer_size;
  70
  71         JournalRateLimit *rate_limit;
  72         usec_t rate_limit_interval;
  73         unsigned rate_limit_burst;
  74
  75         JournalMetrics runtime_metrics;
  76         JournalMetrics system_metrics;
  77
  78         bool compress;
  79         bool seal;
  80
  81         bool forward_to_kmsg;
  82         bool forward_to_syslog;
  83         bool forward_to_console;
  84
  85         uint64_t cached_available_space;
  86         usec_t cached_available_space_timestamp;
  87
  88         uint64_t var_available_timestamp;
  89
  90         gid_t file_gid;
  91         bool file_gid_valid;
  92
  93         LIST_HEAD(StdoutStream, stdout_streams);
  94         unsigned n_stdout_streams;
  95
  96         char *tty_path;
  97
  98         int max_level_store;
  99         int max_level_syslog;
 100         int max_level_kmsg;
 101         int max_level_console;
 102
 103         Storage storage;
 104         SplitMode split_mode;
 105
 106         MMapCache *mmap;
 107
 108         bool dev_kmsg_readable;
 109
 110         uint64_t *kernel_seqnum;
 111
 112         struct udev *udev;
 113 } Server;
 114
 115 #define N_IOVEC_META_FIELDS 17
 116 #define N_IOVEC_KERNEL_FIELDS 64
 117 #define N_IOVEC_UDEV_FIELDS 32
 118
 119 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);
 120 void server_driver_message(Server *s, sd_id128_t message_id, const char *format, ...);
 121
 122 /* gperf lookup function */
 123 const struct ConfigPerfItem* journald_gperf_lookup(const char *key, unsigned length);
 124
 125 int config_parse_storage(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 126
 127 const char *storage_to_string(Storage s);
 128 Storage storage_from_string(const char *s);
 129
 130 int config_parse_split_mode(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 131
 132 const char *split_mode_to_string(SplitMode s);
 133 SplitMode split_mode_from_string(const char *s);