QB_LOG_TA...R_DATA_SET(3)

💖 qb_log_target_user_data_set — bestie edition 💖

okay so this is a page from the libqb Programmer's Manual (yes, the libqb girlies, we're in the logging chapter rn) and it's giving very short-and-sweet. the name of the whole thing is QB_LOG_TA...R_DATA_SET(3) — yes the title is truncated like that, no i don't know why, the manpage girlies did that, we respect it 🎀

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✨ NAME ✨

qb_log_target_user_data_set — associate user data with this log target. that's it. that's the whole job. attach ur lil data blob to a target. slay 💅

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✨ SYNOPSIS ✨

#include <qb/qblog.h>

int32_t qb_log_target_user_data_set(
    int32_t  t,
    void    *user_data
);

look at that. two args. t is the target (int32_t bestie) and user_data is a void * because we don't know what ur shoving in there and honestly? not our business. it returns an int32_t. ✨

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✨ DESCRIPTION ✨

okay so the actual prose here is famously minimal, so let me just be real with u: this function associates user data with this log target. the whole description section in the original is basically a single <pink>NOTE</pink> and nothing else, which is iconic honestly, short king behavior 👑

🌸 NOTE 🌸

only use this with custom targets

like. ONLY. custom targets. not regular targets. custom ones. no cap. if u try to use it elsewhere that's on u bestie 😭

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✨ SEE ALSO ✨

the girlies this function hangs out with at the function (pun intended 💀). read these too, fr fr:

• 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_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)
• qb_log_custom_open(3)

and yeah, qb_log_target_user_data_get(3) is right there in that list — it's the getter to this setter. the matching set. the duo. the way that they 🤝. read both, iykyk 💜

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✨ COPYRIGHT ✨

Copyright (c) 2017 Red Hat, Inc. — shoutout Red Hat, thanks for the code bestie 🫶

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okay that's the whole page, u made it to the end, so proud of u 🥹

cute lil sign-off time: this came from LIBQB, dated 2025-09-16, and it lives at QB_LOG_TA...R_DATA_SET(3) in the manual. go set some user data on a custom target and have the best day, mwah 💖✨🌸