journal: implement seek to head/tail

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

diff --git a/src/journal/sd-journal.h b/src/journal/sd-journal.h
index 55e58601fe9843905a0b83750a4d099580972094..bf6673453dbe31f9656c5c7c507b66abdf912f4a 100644 (file)
--- a/src/journal/sd-journal.h
+++ b/src/journal/sd-journal.h
@@ -27,13 +27,16 @@
 
 /* TODO:
  *
 
 /* TODO:
  *

- *   - implement rotation

  *   - check LE/BE conversion for 8bit, 16bit, 32bit values
  *   - implement parallel traversal
  *   - implement inotify usage on client
  *   - implement audit gateway
  *   - implement native gateway
  *   - check LE/BE conversion for 8bit, 16bit, 32bit values
  *   - implement parallel traversal
  *   - implement inotify usage on client
  *   - implement audit gateway
  *   - implement native gateway

+ *   - implement stdout gateway

  *   - extend hash table/bisect table as we go
  *   - extend hash table/bisect table as we go

+ *   - accelerate looking for "all hostnames" and suchlike.
+ *   - throttling
+ *   - enforce limit on open journal files in journald and journalctl

  */
 
 typedef struct sd_journal sd_journal;
  */
 
 typedef struct sd_journal sd_journal;


@@ -44,24 +47,59 @@ void sd_journal_close(sd_journal *j);
 int sd_journal_previous(sd_journal *j);
 int sd_journal_next(sd_journal *j);
 
 int sd_journal_previous(sd_journal *j);
 int sd_journal_next(sd_journal *j);
 

-int sd_journal_get(sd_journal *j, const char *field, const void **data, size_t *size);
-int sd_journal_get_seqnum(sd_journal *j, uint64_t *ret);

 int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret);
 int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret);
 int sd_journal_get_realtime_usec(sd_journal *j, uint64_t *ret);
 int sd_journal_get_monotonic_usec(sd_journal *j, uint64_t *ret);

+int sd_journal_get_data(sd_journal *j, const char *field, const void **data, size_t *l);
+int sd_journal_enumerate_data(sd_journal *j, const void **data, size_t *l);
+void sd_journal_start_data(sd_journal *j);

 
 

-int sd_journal_add_match(sd_journal *j, const char *field, const void *data, size_t size);
+int sd_journal_add_match(sd_journal *j, const void *data, size_t size);

 void sd_journal_flush_matches(sd_journal *j);
 
 int sd_journal_seek_head(sd_journal *j);
 int sd_journal_seek_tail(sd_journal *j);
 
 void sd_journal_flush_matches(sd_journal *j);
 
 int sd_journal_seek_head(sd_journal *j);
 int sd_journal_seek_tail(sd_journal *j);
 

-int sd_journal_seek_seqnum(sd_journal *j, uint64_t seqnum);
-int sd_journal_seek_monotonic_usec(sd_journal *j, uint64_t usec);
-int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec);
+int sd_journal_seek_monotonic_usec(sd_journal *j, uint64_t usec);  /* missing */
+int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec);   /* missing */

 
 

-int sd_journal_get_cursor(sd_journal *j, void **cursor, size_t *size);
-int sd_journal_set_cursor(sd_journal *j, const void *cursor, size_t size);
+int sd_journal_get_cursor(sd_journal *j, char **cursor);
+int sd_journal_set_cursor(sd_journal *j, const char *cursor);      /* missing */

 
 

-int sd_journal_get_fd(sd_journal *j);
+int sd_journal_unique_seek(sd_journal *j, const char *field);      /* missing */
+int sd_journal_unique_enumerate(sd_journal *j, const void **data, size_t *l); /* missing */
+
+int sd_journal_get_fd(sd_journal *j);                              /* missing */
+
+enum {
+        SD_JOURNAL_NOP,
+        SD_JOURNAL_APPEND,
+        SD_JOURNAL_DROP
+};
+
+int sd_journal_process(sd_journal *j);
+
+#define SD_JOURNAL_FOREACH_BEGIN(j)             \
+        if (sd_journal_seek_head(j) > 0) do {
+
+#define SD_JOURNAL_FOREACH_END(j)               \
+        } while (sd_journal_next(j) > 0)
+
+#define SD_JOURNAL_FOREACH_CONTINUE(j)          \
+        do {
+
+#define SD_JOURNAL_FOREACH_BACKWARDS_BEGIN(j)   \
+        if (sd_journal_seek_tail(j) > 0) do {
+
+#define SD_JOURNAL_FOREACH_BACKWARDS_END(j)     \
+        } while (sd_journal_previous(j) > 0)
+
+#define SD_JOURNAL_FOREACH_BACKWARDS_CONTINUE(j) \
+        do {
+
+#define SD_JOURNAL_FOREACH_DATA(j, data, l)                             \
+        for (sd_journal_start_data(j); sd_journal_enumerate_data((j), &(data), &(l)) > 0; )
+
+#define SD_JOURNAL_FOREACH_UNIQUE(j, data, l)                      \
+        while (sd_journal_enumerate_unique_data((j), &(data), &(l)) > 0)

 
 #endif
 
 #endif