QB_LOG_CUSTOM_OPEN(3)

💖 QB_LOG_CUSTOM_OPEN(3) 💖

okay bestie, so this one lives in the libqb Programmer's Manual (section 3, the library-call girlies), and it's literally just one job: opening your very own custom log target. no cap. 🎀

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✨ NAME ✨

qb_log_custom_open — Open a custom log target.

like. you bring the functions, libqb brings the slot in the lineup. main character energy fr fr 🦋

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✨ SYNOPSIS ✨

#include <qb/qblog.h>

int32_t qb_log_custom_open(
    qb_log_logger_fn  log_fn,
    qb_log_close_fn   close_fn,
    qb_log_reload_fn  reload_fn,
    void             *user_data
);

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✨ DESCRIPTION ✨

lowkey iconic of this manpage to leave this section empty, and honestly? we respect the silence. 💅 the description is giving nothing, so there's nothing to add — no extra lore, no invented behaviour, just vibes. what you see in RETURN VALUE is what you get.

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✨ RETURN VALUE ✨

• -errno — on error. 😭 yeah bestie, it comes back negative, that's your sign something went sideways.
• value — in the inclusive range QB_LOG_TARGET_DYNAMIC_START to QB_LOG_TARGET_DYNAMIC_END. and you're gonna want to hold onto that value, because that's the ticket you pass into all the other qb_log_* functions. it's giving backstage pass. 🎟️✨

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🌈 SEE ALSO 🌈

the whole friend group, assembled. go read them, they're all so valid:

• qb_log_filter_fn_set(3)
• qb_log_from_external_source_va2(3)
• qb_log_thread_start(3)
• qb_log_target_user_data_get(3)
• qb_log_tags_stringify_fn_set(3)
• qb_log_file_reopen(3)
• qb_log_fini(3)
• qb_log_callsites_dump(3)
• qb_log_ctl2(3)
• qb_log_target_user_data_set(3)
• qb_log_target_format(3)
• qb_log_thread_priority_set(3)
• qb_log_facility2int(3)
• qb_log_callsites_register(3)
• qb_log_filter_ctl2(3)
• qb_log_file_close(3)
• qb_log_format_set(3)
• qb_log_real_(3)
• qb_log_from_external_source_va(3)
• qb_log_callsite_get(3)
• qb_log_blackbox_write_to_file(3)
• qb_log_real_va_(3)
• qb_log_from_external_source(3)
• qb_log_blackbox_print_from_file(3)
• qb_log_facility2str(3)
• qb_log_callsite_get2(3)
• qb_log_ctl(3)
• qb_log_filter_ctl(3)
• qb_log_custom_close(3)
• qb_log_init(3)
• qb_log_file_open(3)

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👑 COPYRIGHT 👑

Copyright (c) 2017 Red Hat, Inc.

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okay that's the whole page, bestie, mwah 💋 — this was QB_LOG_CUSTOM_OPEN(3) from the libqb crew, dated 2025-09-16, tagged LIBQB. go open something custom, you absolute legend. 🫶🌸