SD_JOURNA...IME_FILES(3)

okay bestie, welcome to the SD_JOURNA...IME_FILES(3) page — the manual name in the header is sd_journal_has_runtime_files, and we're about to make journal-file availability make sense. 💅✨

💖 NAME 💖

sd_journal_has_runtime_files, sd_journal_has_persistent_files — query availability of runtime or persistent journal files. That's the whole assignment, and they ate. 🎀

✨ SYNOPSIS ✨

#include <systemd/sd-journal.h>

int sd_journal_has_runtime_files(sd_journal *j);

int sd_journal_has_persistent_files(sd_journal *j);

🦋 DESCRIPTION 🦋

sd_journal_has_runtime_files() returns a positive value if runtime journal files (present in /run/systemd/journal/) have been found. Otherwise, returns 0. So it's giving "yes, runtime files are here" versus "nah, 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. Same energy, different directory, no cap. 🌸

🎀 RETURN VALUE 🎀

Both sd_journal_has_runtime_files() and sd_journal_has_persistent_files() return -EINVAL if their argument is NULL.

🚨 bestie, do not pass NULL unless you want that -EINVAL delivered straight to your function call. It's not a vibe check, it's an error. 💀

🌸 NOTES 🌸

• All functions listed here are thread-agnostic and only a single thread may operate on a given object at any given time.
• Different threads may access the same object at different times.
• Multiple independent objects may be used from different threads in parallel.
• Functions described here are available as a shared library, which can be compiled against and linked to with the libsystemd pkg-config(1) file. 🧚

🔥 HISTORY 🔥

sd_journal_has_runtime_files() and sd_journal_has_persistent_files() were added in version 229. Iconic behavior, honestly. 👑

🌈 SEE ALSO 🌈

• systemd(1)
• sd-journal(3)

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okay that's the page, bestie — the footer says systemd 261.3, and the date slot on this copy is blank, so no invented date from me, periodt. 💖✨