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
works similar to
the entry is looked up by the specified message ID (no open
journal context is necessary for this), and no field substitution
For more information about the journal message catalog please refer to the Journal Message Catalogs documentation page.
return 0 on success or a negative errno-style error code. If no
matching message catalog entry is found, -ENOENT is
On successful return,
ret points to a
new string, which must be freed with
sd_journal_get_catalog() is thread-agnostic and only a
single thread may operate on a given sd_journal object. Function
sd_journal_get_catalog_for_message_id() is thread-safe.
These APIs are implemented as a shared
library, which can be compiled and linked to with the