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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | NOTES | HISTORY | SEE ALSO | COLOPHON |
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SD_JOUR...E_FILES(3) sd_journal_has_runtime_files SD_JOUR...E_FILES(3)
sd_journal_has_runtime_files, sd_journal_has_persistent_files -
Query availability of runtime or persistent journal files
#include <systemd/sd-journal.h>
int sd_journal_has_runtime_files(sd_journal *j);
int sd_journal_has_persistent_files(sd_journal *j);
sd_journal_has_runtime_files() returns a positive value if
runtime journal files (present in /run/systemd/journal/) have
been found. Otherwise returns 0.
sd_journal_has_persistent_files() returns a positive value if
persistent journal files (present in /var/log/journal/) have been
found. Otherwise returns 0.
Both sd_journal_has_runtime_files() and
sd_journal_has_persistent_files() return -EINVAL if their
argument is NULL.
All functions listed here are 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.
Functions described here are available as a shared library, which
can be compiled against and linked to with the
libsystemd pkg-config(1) file.
sd_journal_has_runtime_files() and
sd_journal_has_persistent_files() were added in version 229.
sd-journal(3)
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have
a bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2024-06-14. (At that
time, the date of the most recent commit that was found in the
repository was 2024-06-13.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
systemd 257~devel SD_JOUR...E_FILES(3)
Pages that refer to this page: sd-journal(3), systemd.directives(7), systemd.index(7)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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