#define JOURNAL_FOREACH_DATA_RETVAL(j, data, l, retval) \
for (sd_journal_restart_data(j); ((retval) = sd_journal_enumerate_data((j), &(data), &(l))) > 0; )
+
+/* All errors that we might encounter while extracting a field that are not real errors,
+ * but only mean that the field is too large or we don't support the compression. */
+static inline bool JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(int r) {
+ return IN_SET(abs(r),
+ ENOBUFS, /* Field or decompressed field too large */
+ E2BIG, /* Field too large for pointer width */
+ EPROTONOSUPPORT); /* Unsupported compression */
+}
return 1;
}
+_public_ int sd_journal_enumerate_available_data(sd_journal *j, const void **data, size_t *size) {
+ for (;;) {
+ int r;
+
+ r = sd_journal_enumerate_data(j, data, size);
+ if (r >= 0)
+ return r;
+ if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r))
+ return r;
+ j->current_field++; /* Try with the next field */
+ }
+}
+
_public_ void sd_journal_restart_data(sd_journal *j) {
if (!j)
return;
}
}
+_public_ int sd_journal_enumerate_available_unique(sd_journal *j, const void **data, size_t *size) {
+ for (;;) {
+ int r;
+
+ r = sd_journal_enumerate_unique(j, data, size);
+ if (r >= 0)
+ return r;
+ if (!JOURNAL_ERRNO_IS_UNAVAILABLE_FIELD(r))
+ return r;
+ /* Try with the next field. sd_journal_enumerate_unique() modifies state, so on the next try
+ * we will access the next field. */
+ }
+}
+
_public_ void sd_journal_restart_unique(sd_journal *j) {
if (!j)
return;
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);
+int sd_journal_enumerate_available_data(sd_journal *j, const void **data, size_t *l);
void sd_journal_restart_data(sd_journal *j);
int sd_journal_add_match(sd_journal *j, const void *data, size_t size);
int sd_journal_query_unique(sd_journal *j, const char *field);
int sd_journal_enumerate_unique(sd_journal *j, const void **data, size_t *l);
+int sd_journal_enumerate_available_unique(sd_journal *j, const void **data, size_t *l);
void sd_journal_restart_unique(sd_journal *j);
int sd_journal_enumerate_fields(sd_journal *j, const char **field);
if (sd_journal_seek_tail(j) < 0) { } \
else while (sd_journal_previous(j) > 0)
-/* Iterate through the data fields of the current journal entry */
+/* Iterate through all available data fields of the current journal entry */
#define SD_JOURNAL_FOREACH_DATA(j, data, l) \
- for (sd_journal_restart_data(j); sd_journal_enumerate_data((j), &(data), &(l)) > 0; )
+ for (sd_journal_restart_data(j); sd_journal_enumerate_available_data((j), &(data), &(l)) > 0; )
-/* Iterate through the all known values of a specific field */
+/* Iterate through all available values of a specific field */
#define SD_JOURNAL_FOREACH_UNIQUE(j, data, l) \
- for (sd_journal_restart_unique(j); sd_journal_enumerate_unique((j), &(data), &(l)) > 0; )
+ for (sd_journal_restart_unique(j); sd_journal_enumerate_available_unique((j), &(data), &(l)) > 0; )
/* Iterate through all known field names */
#define SD_JOURNAL_FOREACH_FIELD(j, field) \