journalctl: quit on I/O error

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

diff --git a/src/journal/journal-def.h b/src/journal/journal-def.h
index ac89e61d932053edf6a98635037f69d04a90b38d..7e407a416cb1ca1674202c1162cddcc745d91d46 100644 (file)
--- a/src/journal/journal-def.h
+++ b/src/journal/journal-def.h
@@ -1,7 +1,6 @@
 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
-#ifndef foojournaldefhfoo
-#define foojournaldefhfoo
+#pragma once
 
 /***
   This file is part of systemd.
@@ -28,6 +27,13 @@
 
 #include "macro.h"
 
+/*
+ * If you change this file you probably should also change its documentation:
+ *
+ * http://www.freedesktop.org/wiki/Software/systemd/journal-files
+ *
+ */
+
 typedef struct Header Header;
 
 typedef struct ObjectHeader ObjectHeader;
@@ -38,11 +44,13 @@ typedef struct FieldObject FieldObject;
 typedef struct EntryObject EntryObject;
 typedef struct HashTableObject HashTableObject;
 typedef struct EntryArrayObject EntryArrayObject;
-typedef struct SignatureObject SignatureObject;
+typedef struct TagObject TagObject;
 
 typedef struct EntryItem EntryItem;
 typedef struct HashItem HashItem;
 
+typedef struct FSSHeader FSSHeader;
+
 /* Object types */
 enum {
         OBJECT_UNUSED,
@@ -52,7 +60,7 @@ enum {
         OBJECT_DATA_HASH_TABLE,
         OBJECT_FIELD_HASH_TABLE,
         OBJECT_ENTRY_ARRAY,
-        OBJECT_SIGNATURE,
+        OBJECT_TAG,
         _OBJECT_TYPE_MAX
 };
 
@@ -61,15 +69,15 @@ enum {
         OBJECT_COMPRESSED = 1
 };
 
-_packed_ struct ObjectHeader {
+struct ObjectHeader {
         uint8_t type;
         uint8_t flags;
         uint8_t reserved[6];
         le64_t size;
         uint8_t payload[];
-};
+} _packed_;
 
-_packed_ struct DataObject {
+struct DataObject {
         ObjectHeader object;
         le64_t hash;
         le64_t next_hash_offset;
@@ -78,23 +86,22 @@ _packed_ struct DataObject {
         le64_t entry_array_offset;
         le64_t n_entries;
         uint8_t payload[];
-};
+} _packed_;
 
-_packed_ struct FieldObject {
+struct FieldObject {
         ObjectHeader object;
         le64_t hash;
         le64_t next_hash_offset;
         le64_t head_data_offset;
-        le64_t tail_data_offset;
         uint8_t payload[];
-};
+} _packed_;
 
-_packed_ struct EntryItem {
+struct EntryItem {
         le64_t object_offset;
         le64_t hash;
-};
+} _packed_;
 
-_packed_ struct EntryObject {
+struct EntryObject {
         ObjectHeader object;
         le64_t seqnum;
         le64_t realtime;
@@ -102,31 +109,32 @@ _packed_ struct EntryObject {
         sd_id128_t boot_id;
         le64_t xor_hash;
         EntryItem items[];
-};
+} _packed_;
 
-_packed_ struct HashItem {
+struct HashItem {
         le64_t head_hash_offset;
         le64_t tail_hash_offset;
-};
+} _packed_;
 
-_packed_ struct HashTableObject {
+struct HashTableObject {
         ObjectHeader object;
         HashItem items[];
-};
+} _packed_;
 
-_packed_ struct EntryArrayObject {
+struct EntryArrayObject {
         ObjectHeader object;
         le64_t next_entry_array_offset;
         le64_t items[];
-};
+} _packed_;
 
-#define SIGNATURE_LENGTH 160
+#define TAG_LENGTH (256/8)
 
-_packed_ struct SignatureObject {
+struct TagObject {
         ObjectHeader object;
-        le64_t from;
-        uint8_t signature[SIGNATURE_LENGTH];
-};
+        le64_t seqnum;
+        le64_t epoch;
+        uint8_t tag[TAG_LENGTH]; /* SHA-256 HMAC */
+} _packed_;
 
 union Object {
         ObjectHeader object;
@@ -135,13 +143,14 @@ union Object {
         EntryObject entry;
         HashTableObject hash_table;
         EntryArrayObject entry_array;
-        SignatureObject signature;
+        TagObject tag;
 };
 
 enum {
-        STATE_OFFLINE,
-        STATE_ONLINE,
-        STATE_ARCHIVED
+        STATE_OFFLINE = 0,
+        STATE_ONLINE = 1,
+        STATE_ARCHIVED = 2,
+        _STATE_MAX
 };
 
 /* Header flags */
@@ -150,30 +159,32 @@ enum {
 };
 
 enum {
-        HEADER_COMPATIBLE_SIGNED = 1
+        HEADER_COMPATIBLE_SEALED = 1
 };
 
-_packed_ struct Header {
+#define HEADER_SIGNATURE ((char[]) { 'L', 'P', 'K', 'S', 'H', 'H', 'R', 'H' })
+
+struct Header {
         uint8_t signature[8]; /* "LPKSHHRH" */
-        uint32_t compatible_flags;
-        uint32_t incompatible_flags;
+        le32_t compatible_flags;
+        le32_t incompatible_flags;
         uint8_t state;
         uint8_t reserved[7];
         sd_id128_t file_id;
-        sd_id128_t machine_id; /* last writer */
+        sd_id128_t machine_id;
         sd_id128_t boot_id;    /* last writer */
         sd_id128_t seqnum_id;
         le64_t header_size;
         le64_t arena_size;
-        le64_t data_hash_table_offset;     /* for looking up data objects */
+        le64_t data_hash_table_offset;
         le64_t data_hash_table_size;
-        le64_t field_hash_table_offset;     /* for looking up field objects */
+        le64_t field_hash_table_offset;
         le64_t field_hash_table_size;
         le64_t tail_object_offset;
         le64_t n_objects;
         le64_t n_entries;
-        le64_t tail_seqnum;
-        le64_t head_seqnum;
+        le64_t tail_entry_seqnum;
+        le64_t head_entry_seqnum;
         le64_t entry_array_offset;
         le64_t head_entry_realtime;
         le64_t tail_entry_realtime;
@@ -181,6 +192,25 @@ _packed_ struct Header {
         /* Added in 187 */
         le64_t n_data;
         le64_t n_fields;
-};
+        /* Added in 189 */
+        le64_t n_tags;
+        le64_t n_entry_arrays;
 
-#endif
+        /* Size: 224 */
+} _packed_;
+
+#define FSS_HEADER_SIGNATURE ((char[]) { 'K', 'S', 'H', 'H', 'R', 'H', 'L', 'P' })
+
+struct FSSHeader {
+        uint8_t signature[8]; /* "KSHHRHLP" */
+        le32_t compatible_flags;
+        le32_t incompatible_flags;
+        sd_id128_t machine_id;
+        sd_id128_t boot_id;    /* last writer */
+        le64_t header_size;
+        le64_t start_usec;
+        le64_t interval_usec;
+        le16_t fsprg_secpar;
+        le16_t reserved[3];
+        le64_t fsprg_state_size;
+} _packed_;