journal: rework terminology

[elogind.git] / src / journal / journal-file.h

diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h
index 62197429ae01caa6408ea7162ddd26642566870e..58de214359086416d00a126c85806cdea788ca2b 100644 (file)
--- a/src/journal/journal-file.h
+++ b/src/journal/journal-file.h
@@ -1,7 +1,6 @@
 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
-#ifndef foojournalfilehfoo
-#define foojournalfilehfoo
+#pragma once
 
 /***
   This file is part of systemd.
@@ -24,29 +23,16 @@
 
 #include <inttypes.h>
 
+#ifdef HAVE_GCRYPT
+#include <gcrypt.h>
+#endif
+
 #include <systemd/sd-id128.h>
 
 #include "sparse-endian.h"
 #include "journal-def.h"
 #include "util.h"
-
-typedef struct Window {
-        void *ptr;
-        uint64_t offset;
-        uint64_t size;
-} Window;
-
-enum {
-        WINDOW_UNKNOWN = OBJECT_UNUSED,
-        WINDOW_DATA = OBJECT_DATA,
-        WINDOW_ENTRY = OBJECT_ENTRY,
-        WINDOW_DATA_HASH_TABLE = OBJECT_DATA_HASH_TABLE,
-        WINDOW_FIELD_HASH_TABLE = OBJECT_FIELD_HASH_TABLE,
-        WINDOW_ENTRY_ARRAY = OBJECT_ENTRY_ARRAY,
-        WINDOW_SIGNATURE = OBJECT_SIGNATURE,
-        WINDOW_HEADER,
-        _WINDOW_MAX
-};
+#include "mmap-cache.h"
 
 typedef struct JournalMetrics {
         uint64_t max_use;
@@ -60,27 +46,45 @@ typedef struct JournalFile {
         char *path;
         struct stat last_stat;
         mode_t mode;
+
         int flags;
         int prot;
         bool writable;
+        bool compress;
+        bool seal;
+
         bool tail_entry_monotonic_valid;
 
         Header *header;
         HashItem *data_hash_table;
         HashItem *field_hash_table;
 
-        Window windows[_WINDOW_MAX];
-
         uint64_t current_offset;
 
         JournalMetrics metrics;
-
-        bool compress;
+        MMapCache *mmap;
 
 #ifdef HAVE_XZ
         void *compress_buffer;
         uint64_t compress_buffer_size;
 #endif
+
+#ifdef HAVE_GCRYPT
+        gcry_md_hd_t hmac;
+        bool hmac_running;
+
+        FSSHeader *fss_file;
+        size_t fss_file_size;
+
+        uint64_t fss_start_usec;
+        uint64_t fss_interval_usec;
+
+        void *fsprg_state;
+        size_t fsprg_state_size;
+
+        void *fsprg_seed;
+        size_t fsprg_seed_size;
+#endif
 } JournalFile;
 
 typedef enum direction {
@@ -88,15 +92,41 @@ typedef enum direction {
         DIRECTION_DOWN
 } direction_t;
 
-int journal_file_open(const char *fname, int flags, mode_t mode, JournalFile *template, JournalFile **ret);
+int journal_file_open(
+                const char *fname,
+                int flags,
+                mode_t mode,
+                bool compress,
+                bool seal,
+                JournalMetrics *metrics,
+                MMapCache *mmap_cache,
+                JournalFile *template,
+                JournalFile **ret);
+
 void journal_file_close(JournalFile *j);
 
-int journal_file_open_reliably(const char *fname, int flags, mode_t mode, JournalFile *template, JournalFile **ret);
+int journal_file_open_reliably(
+                const char *fname,
+                int flags,
+                mode_t mode,
+                bool compress,
+                bool seal,
+                JournalMetrics *metrics,
+                MMapCache *mmap_cache,
+                JournalFile *template,
+                JournalFile **ret);
+
+#define ALIGN64(x) (((x) + 7ULL) & ~7ULL)
+
+#define JOURNAL_HEADER_CONTAINS(h, field) \
+        (le64toh((h)->header_size) >= offsetof(Header, field) + sizeof((h)->field))
 
 int journal_file_move_to_object(JournalFile *f, int type, uint64_t offset, Object **ret);
 
 uint64_t journal_file_entry_n_items(Object *o);
+uint64_t journal_file_entry_array_n_items(Object *o);
 
+int journal_file_append_object(JournalFile *f, int type, uint64_t size, Object **ret, uint64_t *offset);
 int journal_file_append_entry(JournalFile *f, const dual_timestamp *ts, const struct iovec iovec[], unsigned n_iovec, uint64_t *seqno, Object **ret, uint64_t *offset);
 
 int journal_file_find_data_object(JournalFile *f, const void *data, uint64_t size, Object **ret, uint64_t *offset);
@@ -122,9 +152,7 @@ int journal_file_copy_entry(JournalFile *from, JournalFile *to, Object *o, uint6
 void journal_file_dump(JournalFile *f);
 void journal_file_print_header(JournalFile *f);
 
-int journal_file_rotate(JournalFile **f);
-
-int journal_directory_vacuum(const char *directory, uint64_t max_use, uint64_t min_free);
+int journal_file_rotate(JournalFile **f, bool compress, bool seal);
 
 void journal_file_post_change(JournalFile *f);
 
@@ -134,5 +162,3 @@ int journal_file_get_cutoff_realtime_usec(JournalFile *f, usec_t *from, usec_t *
 int journal_file_get_cutoff_monotonic_usec(JournalFile *f, sd_id128_t boot, usec_t *from, usec_t *to);
 
 bool journal_file_rotate_suggested(JournalFile *f);
-
-#endif