core: add new ConditionNeedsUpdate= unit condition

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

diff --git a/src/journal/journal-file.h b/src/journal/journal-file.h
index 7b1cd4285493c7a1b1261b31eb1ce851ec89b5fe..50dbe29cc16d422f7a22f4943599d876b7e77b02 100644 (file)
--- a/src/journal/journal-file.h
+++ b/src/journal/journal-file.h
@@ -37,24 +37,34 @@
 
 typedef struct JournalMetrics {
         uint64_t max_use;
+        uint64_t use;
         uint64_t max_size;
         uint64_t min_size;
         uint64_t keep_free;
 } JournalMetrics;
 
+typedef enum direction {
+        DIRECTION_UP,
+        DIRECTION_DOWN
+} direction_t;
+
 typedef struct JournalFile {
         int fd;
-        char *path;
-        struct stat last_stat;
+
         mode_t mode;
 
         int flags;
         int prot;
-        bool writable;
-        bool compress;
-        bool seal;
+        bool writable:1;
+        bool compress:1;
+        bool seal:1;
+
+        bool tail_entry_monotonic_valid:1;
 
-        bool tail_entry_monotonic_valid;
+        direction_t last_direction;
+
+        char *path;
+        struct stat last_stat;
 
         Header *header;
         HashItem *data_hash_table;
@@ -90,11 +100,6 @@ typedef struct JournalFile {
 #endif
 } JournalFile;
 
-typedef enum direction {
-        DIRECTION_UP,
-        DIRECTION_DOWN
-} direction_t;
-
 int journal_file_open(
                 const char *fname,
                 int flags,
@@ -107,7 +112,6 @@ int journal_file_open(
                 JournalFile **ret);
 
 int journal_file_set_offline(JournalFile *f);
-int journal_file_set_online(JournalFile *f);
 void journal_file_close(JournalFile *j);
 
 int journal_file_open_reliably(
@@ -124,6 +128,10 @@ int journal_file_open_reliably(
 #define ALIGN64(x) (((x) + 7ULL) & ~7ULL)
 #define VALID64(x) (((x) & 7ULL) == 0ULL)
 
+/* Use six characters to cover the offsets common in smallish journal
+ * files without adding too many zeros. */
+#define OFSfmt "%06"PRIx64
+
 static inline bool VALID_REALTIME(uint64_t u) {
         /* This considers timestamps until the year 3112 valid. That should be plenty room... */
         return u > 0 && u < (1ULL << 55);
@@ -193,3 +201,23 @@ 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, usec_t max_file_usec);
+
+
+static unsigned type_to_context(int type) {
+        /* One context for each type, plus one catch-all for the rest */
+        return type > 0 && type < _OBJECT_TYPE_MAX ? type : 0;
+}
+
+static inline int journal_file_object_keep(JournalFile *f, Object *o, uint64_t offset) {
+        unsigned context = type_to_context(o->object.type);
+
+        return mmap_cache_get(f->mmap, f->fd, f->prot, context, true,
+                              offset, o->object.size, &f->last_stat, NULL);
+}
+
+static inline int journal_file_object_release(JournalFile *f, Object *o, uint64_t offset) {
+        unsigned context = type_to_context(o->object.type);
+
+        return mmap_cache_release(f->mmap, f->fd, f->prot, context,
+                                  offset, o->object.size);
+}