journal: implement multiple field matches

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

diff --git a/src/journal/sd-journal.h b/src/journal/sd-journal.h
index 9978ca9ac0dd2f500fbae691c6e87b843709d72b..8d7e314223c1ce008b2fc23224fc1a16c95c79e9 100644 (file)
--- a/src/journal/sd-journal.h
+++ b/src/journal/sd-journal.h
@@ -25,18 +25,22 @@
 #include <inttypes.h>
 #include <sys/types.h>
 
+#include "sd-id128.h"
+
 /* TODO:
  *
  *   - 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 tables table as we go
  *   - accelerate looking for "all hostnames" and suchlike.
  *   - throttling
  *   - enforce limit on open journal files in journald and journalctl
+ *   - cryptographic hash
+ *   - fix space reservation logic
+ *   - comm, argv can be manipulated, should it be _COMM=, _CMDLINE= or COMM=, CMDLINE=?
  */
 
 typedef struct sd_journal sd_journal;
@@ -47,59 +51,52 @@ 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_skip(sd_journal *j, uint64_t skip);
+int sd_journal_next_skip(sd_journal *j, uint64_t skip);
+
 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_monotonic_usec(sd_journal *j, uint64_t *ret, sd_id128_t *ret_boot_id);
 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);
+void sd_journal_restart_data(sd_journal *j);
 
 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);
-
-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_seek_monotonic_usec(sd_journal *j, sd_id128_t boot_id, uint64_t usec);
+int sd_journal_seek_realtime_usec(sd_journal *j, uint64_t usec);
+int sd_journal_seek_cursor(sd_journal *j, const char *cursor);
 
 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_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 */
+int sd_journal_query_unique(sd_journal *j, const char *field);      /* missing */
+int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l); /* missing */
+void sd_journal_restart_unique(sd_journal *j);                      /* missing */
 
 enum {
         SD_JOURNAL_NOP,
         SD_JOURNAL_APPEND,
-        SD_JOURNAL_DROP
+        SD_JOURNAL_INVALIDATE_ADD,
+        SD_JOURNAL_INVALIDATE_REMOVE
 };
 
+int sd_journal_get_fd(sd_journal *j);                              /* missing */
 int sd_journal_process(sd_journal *j);                             /* missing */
 
-#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(j)                                           \
+        if (sd_journal_seek_head(j) >= 0)                               \
+                while (sd_journal_next(j) > 0)                          \
 
-#define SD_JOURNAL_FOREACH_BACKWARDS_CONTINUE(j) \
-        do {
+#define SD_JOURNAL_FOREACH_BACKWARDS(j)                                 \
+        if (sd_journal_seek_tail(j) >= 0)                               \
+                while (sd_journal_previous(j) > 0)                      \
 
 #define SD_JOURNAL_FOREACH_DATA(j, data, l)                             \
-        for (sd_journal_start_data(j); sd_journal_enumerate_data((j), &(data), &(l)) > 0; )
+        for (sd_journal_restart_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)
+#define SD_JOURNAL_FOREACH_UNIQUE(j, data, l)                           \
+        for (sd_journal_restart_unique(j); sd_journal_enumerate_data((j), &(data), &(l)) > 0; )
 
 #endif