sd_journal_get_catalog, sd_journal_get_catalog_for_message_id - Retrieve message catalog entry

sd_journal_get_catalog() retrieves a message catalog entry for the current journal entry. This will look up an entry in the message catalog by using the "MESSAGE_ID=" field of the current journal entry. Before returning the entry all journal field names in the catalog entry text enclosed in "@" will be replaced by the respective field values of the current entry. If a field name referenced in the message catalog entry does not exist, in the current journal entry, the "@" will be removed, but the field name otherwise left untouched. sd_journal_get_catalog_for_message_id() works similar to sd_journal_get_catalog() but the entry is looked up by the specified message ID (no open journal context is necessary for this), and no field substitution is performed. For more information about the journal message catalog please refer to the JournalMessageCatalogs[1] documentation page.

sd_journal_get_catalog() and sd_journal_get_catalog_for_message_id() were added in version 196.

sd_journal_get_catalog, sd_journal_get_catalog_for_message_id - Retrieve message catalog entry

1. Journal Message Catalogs https://systemd.io/CATALOG systemd 257.7 SD_JOURNAL_GET_CATALOG(3)

sd_journal_get_catalog() and sd_journal_get_catalog_for_message_id() return 0 on success or a negative errno-style error code. If no matching message catalog entry is found, -ENOENT is returned. On successful return, ret points to a new string, which must be freed with free(3).

systemd(1), systemd.journal-fields(7), sd-journal(3), sd_journal_open(3), sd_journal_next(3), sd_journal_get_data(3), malloc(3)