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   sd_journal_get_catalog    ( 3 )

получить запись из каталога сообщений (Retrieve message catalog entry)

Имя (Name)

sd_journal_get_catalog, sd_journal_get_catalog_for_message_id -
       Retrieve message catalog entry

Синопсис (Synopsis)

#include <systemd/sd-journal.h>


       int sd_journal_get_catalog(sd_journal *j, char **ret);


       int sd_journal_get_catalog_for_message_id(sd_id128_t id,
                                                 char **ret);

Описание (Description)

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 Journal Message Catalogs[1] documentation page.

Возвращаемое значение (Return value)

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).

Примечание (Note)

Function sd_journal_get_catalog() is thread-agnostic and only a
       single specific thread may operate on a given object during its
       entire lifetime. It's safe to allocate multiple independent
       objects and use each from a specific thread in parallel. However,
       it's not safe to allocate such an object in one thread, and
       operate or free it from any other, even if locking is used to
       ensure these threads don't operate on it at the very same time.


       Function sd_journal_get_catalog_for_message_id() is are
       thread-safe and may be called in parallel from multiple threads.


       These APIs are implemented as a shared library, which can be
       compiled and linked to with the libsystemd pkg-config(1) file.

Смотри также (See also)

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

Примечание (Note)

1. Journal Message Catalogs
           https://www.freedesktop.org/wiki/Software/systemd/catalog